- Added SDL, libjpeg and libpng
- Added Android project and Java files
This commit is contained in:
Xawotihs
@@ -0,0 +1,342 @@
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/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2011 Sam Lantinga <slouken@libsdl.org>
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
|
||||
arising from the use of this software.
|
||||
|
||||
Permission is granted to anyone to use this software for any purpose,
|
||||
including commercial applications, and to alter it and redistribute it
|
||||
freely, subject to the following restrictions:
|
||||
|
||||
1. The origin of this software must not be misrepresented; you must not
|
||||
claim that you wrote the original software. If you use this software
|
||||
in a product, an acknowledgment in the product documentation would be
|
||||
appreciated but is not required.
|
||||
2. Altered source versions must be plainly marked as such, and must not be
|
||||
misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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#include "SDL_config.h"
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#if !SDL_RENDER_DISABLED
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#include "SDL_draw.h"
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#include "SDL_blendfillrect.h"
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static int
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SDL_BlendFillRect_RGB555(SDL_Surface * dst, const SDL_Rect * rect,
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SDL_BlendMode blendMode, Uint8 r, Uint8 g, Uint8 b, Uint8 a)
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{
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unsigned inva = 0xff - a;
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switch (blendMode) {
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case SDL_BLENDMODE_BLEND:
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FILLRECT(Uint16, DRAW_SETPIXEL_BLEND_RGB555);
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break;
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case SDL_BLENDMODE_ADD:
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FILLRECT(Uint16, DRAW_SETPIXEL_ADD_RGB555);
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break;
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case SDL_BLENDMODE_MOD:
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FILLRECT(Uint16, DRAW_SETPIXEL_MOD_RGB555);
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break;
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default:
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FILLRECT(Uint16, DRAW_SETPIXEL_RGB555);
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break;
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}
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return 0;
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}
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static int
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SDL_BlendFillRect_RGB565(SDL_Surface * dst, const SDL_Rect * rect,
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SDL_BlendMode blendMode, Uint8 r, Uint8 g, Uint8 b, Uint8 a)
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{
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unsigned inva = 0xff - a;
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switch (blendMode) {
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case SDL_BLENDMODE_BLEND:
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FILLRECT(Uint16, DRAW_SETPIXEL_BLEND_RGB565);
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break;
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case SDL_BLENDMODE_ADD:
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FILLRECT(Uint16, DRAW_SETPIXEL_ADD_RGB565);
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break;
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case SDL_BLENDMODE_MOD:
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FILLRECT(Uint16, DRAW_SETPIXEL_MOD_RGB565);
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break;
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default:
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FILLRECT(Uint16, DRAW_SETPIXEL_RGB565);
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break;
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}
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return 0;
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}
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static int
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SDL_BlendFillRect_RGB888(SDL_Surface * dst, const SDL_Rect * rect,
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SDL_BlendMode blendMode, Uint8 r, Uint8 g, Uint8 b, Uint8 a)
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{
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unsigned inva = 0xff - a;
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switch (blendMode) {
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case SDL_BLENDMODE_BLEND:
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FILLRECT(Uint32, DRAW_SETPIXEL_BLEND_RGB888);
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break;
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case SDL_BLENDMODE_ADD:
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FILLRECT(Uint32, DRAW_SETPIXEL_ADD_RGB888);
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break;
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case SDL_BLENDMODE_MOD:
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FILLRECT(Uint32, DRAW_SETPIXEL_MOD_RGB888);
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break;
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default:
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FILLRECT(Uint32, DRAW_SETPIXEL_RGB888);
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break;
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}
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return 0;
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}
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static int
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SDL_BlendFillRect_ARGB8888(SDL_Surface * dst, const SDL_Rect * rect,
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SDL_BlendMode blendMode, Uint8 r, Uint8 g, Uint8 b, Uint8 a)
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{
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unsigned inva = 0xff - a;
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switch (blendMode) {
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case SDL_BLENDMODE_BLEND:
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FILLRECT(Uint32, DRAW_SETPIXEL_BLEND_ARGB8888);
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break;
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case SDL_BLENDMODE_ADD:
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FILLRECT(Uint32, DRAW_SETPIXEL_ADD_ARGB8888);
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break;
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case SDL_BLENDMODE_MOD:
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FILLRECT(Uint32, DRAW_SETPIXEL_MOD_ARGB8888);
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break;
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default:
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FILLRECT(Uint32, DRAW_SETPIXEL_ARGB8888);
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break;
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}
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return 0;
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}
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static int
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SDL_BlendFillRect_RGB(SDL_Surface * dst, const SDL_Rect * rect,
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SDL_BlendMode blendMode, Uint8 r, Uint8 g, Uint8 b, Uint8 a)
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{
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SDL_PixelFormat *fmt = dst->format;
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unsigned inva = 0xff - a;
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switch (fmt->BytesPerPixel) {
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case 2:
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switch (blendMode) {
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case SDL_BLENDMODE_BLEND:
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FILLRECT(Uint16, DRAW_SETPIXEL_BLEND_RGB);
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break;
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case SDL_BLENDMODE_ADD:
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FILLRECT(Uint16, DRAW_SETPIXEL_ADD_RGB);
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break;
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case SDL_BLENDMODE_MOD:
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FILLRECT(Uint16, DRAW_SETPIXEL_MOD_RGB);
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break;
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default:
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FILLRECT(Uint16, DRAW_SETPIXEL_RGB);
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break;
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}
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return 0;
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case 4:
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switch (blendMode) {
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case SDL_BLENDMODE_BLEND:
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FILLRECT(Uint32, DRAW_SETPIXEL_BLEND_RGB);
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break;
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case SDL_BLENDMODE_ADD:
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FILLRECT(Uint32, DRAW_SETPIXEL_ADD_RGB);
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break;
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case SDL_BLENDMODE_MOD:
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FILLRECT(Uint32, DRAW_SETPIXEL_MOD_RGB);
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break;
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default:
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FILLRECT(Uint32, DRAW_SETPIXEL_RGB);
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break;
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}
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return 0;
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default:
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SDL_Unsupported();
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return -1;
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}
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}
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static int
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SDL_BlendFillRect_RGBA(SDL_Surface * dst, const SDL_Rect * rect,
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SDL_BlendMode blendMode, Uint8 r, Uint8 g, Uint8 b, Uint8 a)
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{
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SDL_PixelFormat *fmt = dst->format;
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unsigned inva = 0xff - a;
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switch (fmt->BytesPerPixel) {
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case 4:
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switch (blendMode) {
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case SDL_BLENDMODE_BLEND:
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FILLRECT(Uint32, DRAW_SETPIXEL_BLEND_RGBA);
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break;
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case SDL_BLENDMODE_ADD:
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FILLRECT(Uint32, DRAW_SETPIXEL_ADD_RGBA);
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break;
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case SDL_BLENDMODE_MOD:
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FILLRECT(Uint32, DRAW_SETPIXEL_MOD_RGBA);
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break;
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default:
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FILLRECT(Uint32, DRAW_SETPIXEL_RGBA);
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break;
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}
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return 0;
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default:
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SDL_Unsupported();
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return -1;
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}
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}
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int
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SDL_BlendFillRect(SDL_Surface * dst, const SDL_Rect * rect,
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SDL_BlendMode blendMode, Uint8 r, Uint8 g, Uint8 b, Uint8 a)
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{
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SDL_Rect clipped;
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if (!dst) {
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SDL_SetError("Passed NULL destination surface");
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return -1;
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}
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/* This function doesn't work on surfaces < 8 bpp */
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if (dst->format->BitsPerPixel < 8) {
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SDL_SetError("SDL_BlendFillRect(): Unsupported surface format");
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return -1;
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}
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/* If 'rect' == NULL, then fill the whole surface */
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if (rect) {
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/* Perform clipping */
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if (!SDL_IntersectRect(rect, &dst->clip_rect, &clipped)) {
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return 0;
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}
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rect = &clipped;
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} else {
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rect = &dst->clip_rect;
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}
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if (blendMode == SDL_BLENDMODE_BLEND || blendMode == SDL_BLENDMODE_ADD) {
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r = DRAW_MUL(r, a);
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g = DRAW_MUL(g, a);
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b = DRAW_MUL(b, a);
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}
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switch (dst->format->BitsPerPixel) {
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case 15:
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switch (dst->format->Rmask) {
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case 0x7C00:
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return SDL_BlendFillRect_RGB555(dst, rect, blendMode, r, g, b, a);
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}
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break;
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case 16:
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switch (dst->format->Rmask) {
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case 0xF800:
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return SDL_BlendFillRect_RGB565(dst, rect, blendMode, r, g, b, a);
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}
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break;
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case 32:
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switch (dst->format->Rmask) {
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case 0x00FF0000:
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if (!dst->format->Amask) {
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return SDL_BlendFillRect_RGB888(dst, rect, blendMode, r, g, b, a);
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} else {
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return SDL_BlendFillRect_ARGB8888(dst, rect, blendMode, r, g, b, a);
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}
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break;
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}
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break;
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default:
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break;
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}
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if (!dst->format->Amask) {
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return SDL_BlendFillRect_RGB(dst, rect, blendMode, r, g, b, a);
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} else {
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return SDL_BlendFillRect_RGBA(dst, rect, blendMode, r, g, b, a);
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}
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}
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int
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SDL_BlendFillRects(SDL_Surface * dst, const SDL_Rect * rects, int count,
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SDL_BlendMode blendMode, Uint8 r, Uint8 g, Uint8 b, Uint8 a)
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{
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SDL_Rect rect;
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int i;
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int (*func)(SDL_Surface * dst, const SDL_Rect * rect,
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SDL_BlendMode blendMode, Uint8 r, Uint8 g, Uint8 b, Uint8 a) = NULL;
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int status = 0;
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if (!dst) {
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SDL_SetError("Passed NULL destination surface");
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return -1;
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}
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/* This function doesn't work on surfaces < 8 bpp */
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if (dst->format->BitsPerPixel < 8) {
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SDL_SetError("SDL_BlendFillRects(): Unsupported surface format");
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return -1;
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}
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if (blendMode == SDL_BLENDMODE_BLEND || blendMode == SDL_BLENDMODE_ADD) {
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r = DRAW_MUL(r, a);
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g = DRAW_MUL(g, a);
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b = DRAW_MUL(b, a);
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}
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/* FIXME: Does this function pointer slow things down significantly? */
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switch (dst->format->BitsPerPixel) {
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case 15:
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switch (dst->format->Rmask) {
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case 0x7C00:
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func = SDL_BlendFillRect_RGB555;
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}
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break;
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case 16:
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switch (dst->format->Rmask) {
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case 0xF800:
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func = SDL_BlendFillRect_RGB565;
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}
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break;
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case 32:
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switch (dst->format->Rmask) {
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case 0x00FF0000:
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if (!dst->format->Amask) {
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func = SDL_BlendFillRect_RGB888;
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} else {
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func = SDL_BlendFillRect_ARGB8888;
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}
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break;
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||||
}
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break;
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default:
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break;
|
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}
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|
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if (!func) {
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if (!dst->format->Amask) {
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func = SDL_BlendFillRect_RGB;
|
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} else {
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func = SDL_BlendFillRect_RGBA;
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}
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}
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|
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for (i = 0; i < count; ++i) {
|
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/* Perform clipping */
|
||||
if (!SDL_IntersectRect(&rects[i], &dst->clip_rect, &rect)) {
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continue;
|
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}
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status = func(dst, &rect, blendMode, r, g, b, a);
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}
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return status;
|
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}
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|
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#endif /* !SDL_RENDER_DISABLED */
|
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|
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/* vi: set ts=4 sw=4 expandtab: */
|
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@@ -0,0 +1,27 @@
|
||||
/*
|
||||
Simple DirectMedia Layer
|
||||
Copyright (C) 1997-2011 Sam Lantinga <slouken@libsdl.org>
|
||||
|
||||
This software is provided 'as-is', without any express or implied
|
||||
warranty. In no event will the authors be held liable for any damages
|
||||
arising from the use of this software.
|
||||
|
||||
Permission is granted to anyone to use this software for any purpose,
|
||||
including commercial applications, and to alter it and redistribute it
|
||||
freely, subject to the following restrictions:
|
||||
|
||||
1. The origin of this software must not be misrepresented; you must not
|
||||
claim that you wrote the original software. If you use this software
|
||||
in a product, an acknowledgment in the product documentation would be
|
||||
appreciated but is not required.
|
||||
2. Altered source versions must be plainly marked as such, and must not be
|
||||
misrepresented as being the original software.
|
||||
3. This notice may not be removed or altered from any source distribution.
|
||||
*/
|
||||
#include "SDL_config.h"
|
||||
|
||||
|
||||
extern int SDL_BlendFillRect(SDL_Surface * dst, const SDL_Rect * rect, SDL_BlendMode blendMode, Uint8 r, Uint8 g, Uint8 b, Uint8 a);
|
||||
extern int SDL_BlendFillRects(SDL_Surface * dst, const SDL_Rect * rects, int count, SDL_BlendMode blendMode, Uint8 r, Uint8 g, Uint8 b, Uint8 a);
|
||||
|
||||
/* vi: set ts=4 sw=4 expandtab: */
|
||||
@@ -0,0 +1,785 @@
|
||||
/*
|
||||
Simple DirectMedia Layer
|
||||
Copyright (C) 1997-2011 Sam Lantinga <slouken@libsdl.org>
|
||||
|
||||
This software is provided 'as-is', without any express or implied
|
||||
warranty. In no event will the authors be held liable for any damages
|
||||
arising from the use of this software.
|
||||
|
||||
Permission is granted to anyone to use this software for any purpose,
|
||||
including commercial applications, and to alter it and redistribute it
|
||||
freely, subject to the following restrictions:
|
||||
|
||||
1. The origin of this software must not be misrepresented; you must not
|
||||
claim that you wrote the original software. If you use this software
|
||||
in a product, an acknowledgment in the product documentation would be
|
||||
appreciated but is not required.
|
||||
2. Altered source versions must be plainly marked as such, and must not be
|
||||
misrepresented as being the original software.
|
||||
3. This notice may not be removed or altered from any source distribution.
|
||||
*/
|
||||
#include "SDL_config.h"
|
||||
|
||||
#if !SDL_RENDER_DISABLED
|
||||
|
||||
#include "SDL_draw.h"
|
||||
#include "SDL_blendline.h"
|
||||
#include "SDL_blendpoint.h"
|
||||
|
||||
|
||||
static void
|
||||
SDL_BlendLine_RGB2(SDL_Surface * dst, int x1, int y1, int x2, int y2,
|
||||
SDL_BlendMode blendMode, Uint8 _r, Uint8 _g, Uint8 _b, Uint8 _a,
|
||||
SDL_bool draw_end)
|
||||
{
|
||||
const SDL_PixelFormat *fmt = dst->format;
|
||||
unsigned r, g, b, a, inva;
|
||||
|
||||
if (blendMode == SDL_BLENDMODE_BLEND || blendMode == SDL_BLENDMODE_ADD) {
|
||||
r = DRAW_MUL(_r, _a);
|
||||
g = DRAW_MUL(_g, _a);
|
||||
b = DRAW_MUL(_b, _a);
|
||||
a = _a;
|
||||
} else {
|
||||
r = _r;
|
||||
g = _g;
|
||||
b = _b;
|
||||
a = _a;
|
||||
}
|
||||
inva = (a ^ 0xff);
|
||||
|
||||
if (y1 == y2) {
|
||||
switch (blendMode) {
|
||||
case SDL_BLENDMODE_BLEND:
|
||||
HLINE(Uint16, DRAW_SETPIXEL_BLEND_RGB, draw_end);
|
||||
break;
|
||||
case SDL_BLENDMODE_ADD:
|
||||
HLINE(Uint16, DRAW_SETPIXEL_ADD_RGB, draw_end);
|
||||
break;
|
||||
case SDL_BLENDMODE_MOD:
|
||||
HLINE(Uint16, DRAW_SETPIXEL_MOD_RGB, draw_end);
|
||||
break;
|
||||
default:
|
||||
HLINE(Uint16, DRAW_SETPIXEL_RGB, draw_end);
|
||||
break;
|
||||
}
|
||||
} else if (x1 == x2) {
|
||||
switch (blendMode) {
|
||||
case SDL_BLENDMODE_BLEND:
|
||||
VLINE(Uint16, DRAW_SETPIXEL_BLEND_RGB, draw_end);
|
||||
break;
|
||||
case SDL_BLENDMODE_ADD:
|
||||
VLINE(Uint16, DRAW_SETPIXEL_ADD_RGB, draw_end);
|
||||
break;
|
||||
case SDL_BLENDMODE_MOD:
|
||||
VLINE(Uint16, DRAW_SETPIXEL_MOD_RGB, draw_end);
|
||||
break;
|
||||
default:
|
||||
VLINE(Uint16, DRAW_SETPIXEL_RGB, draw_end);
|
||||
break;
|
||||
}
|
||||
} else if (ABS(x1 - x2) == ABS(y1 - y2)) {
|
||||
switch (blendMode) {
|
||||
case SDL_BLENDMODE_BLEND:
|
||||
DLINE(Uint16, DRAW_SETPIXEL_BLEND_RGB, draw_end);
|
||||
break;
|
||||
case SDL_BLENDMODE_ADD:
|
||||
DLINE(Uint16, DRAW_SETPIXEL_ADD_RGB, draw_end);
|
||||
break;
|
||||
case SDL_BLENDMODE_MOD:
|
||||
DLINE(Uint16, DRAW_SETPIXEL_MOD_RGB, draw_end);
|
||||
break;
|
||||
default:
|
||||
DLINE(Uint16, DRAW_SETPIXEL_RGB, draw_end);
|
||||
break;
|
||||
}
|
||||
} else {
|
||||
switch (blendMode) {
|
||||
case SDL_BLENDMODE_BLEND:
|
||||
AALINE(x1, y1, x2, y2,
|
||||
DRAW_SETPIXELXY2_BLEND_RGB, DRAW_SETPIXELXY2_BLEND_RGB,
|
||||
draw_end);
|
||||
break;
|
||||
case SDL_BLENDMODE_ADD:
|
||||
AALINE(x1, y1, x2, y2,
|
||||
DRAW_SETPIXELXY2_ADD_RGB, DRAW_SETPIXELXY2_ADD_RGB,
|
||||
draw_end);
|
||||
break;
|
||||
case SDL_BLENDMODE_MOD:
|
||||
AALINE(x1, y1, x2, y2,
|
||||
DRAW_SETPIXELXY2_MOD_RGB, DRAW_SETPIXELXY2_MOD_RGB,
|
||||
draw_end);
|
||||
break;
|
||||
default:
|
||||
AALINE(x1, y1, x2, y2,
|
||||
DRAW_SETPIXELXY2_RGB, DRAW_SETPIXELXY2_BLEND_RGB,
|
||||
draw_end);
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
SDL_BlendLine_RGB555(SDL_Surface * dst, int x1, int y1, int x2, int y2,
|
||||
SDL_BlendMode blendMode, Uint8 _r, Uint8 _g, Uint8 _b, Uint8 _a,
|
||||
SDL_bool draw_end)
|
||||
{
|
||||
const SDL_PixelFormat *fmt = dst->format;
|
||||
unsigned r, g, b, a, inva;
|
||||
|
||||
if (blendMode == SDL_BLENDMODE_BLEND || blendMode == SDL_BLENDMODE_ADD) {
|
||||
r = DRAW_MUL(_r, _a);
|
||||
g = DRAW_MUL(_g, _a);
|
||||
b = DRAW_MUL(_b, _a);
|
||||
a = _a;
|
||||
} else {
|
||||
r = _r;
|
||||
g = _g;
|
||||
b = _b;
|
||||
a = _a;
|
||||
}
|
||||
inva = (a ^ 0xff);
|
||||
|
||||
if (y1 == y2) {
|
||||
switch (blendMode) {
|
||||
case SDL_BLENDMODE_BLEND:
|
||||
HLINE(Uint16, DRAW_SETPIXEL_BLEND_RGB555, draw_end);
|
||||
break;
|
||||
case SDL_BLENDMODE_ADD:
|
||||
HLINE(Uint16, DRAW_SETPIXEL_ADD_RGB555, draw_end);
|
||||
break;
|
||||
case SDL_BLENDMODE_MOD:
|
||||
HLINE(Uint16, DRAW_SETPIXEL_MOD_RGB555, draw_end);
|
||||
break;
|
||||
default:
|
||||
HLINE(Uint16, DRAW_SETPIXEL_RGB555, draw_end);
|
||||
break;
|
||||
}
|
||||
} else if (x1 == x2) {
|
||||
switch (blendMode) {
|
||||
case SDL_BLENDMODE_BLEND:
|
||||
VLINE(Uint16, DRAW_SETPIXEL_BLEND_RGB555, draw_end);
|
||||
break;
|
||||
case SDL_BLENDMODE_ADD:
|
||||
VLINE(Uint16, DRAW_SETPIXEL_ADD_RGB555, draw_end);
|
||||
break;
|
||||
case SDL_BLENDMODE_MOD:
|
||||
VLINE(Uint16, DRAW_SETPIXEL_MOD_RGB555, draw_end);
|
||||
break;
|
||||
default:
|
||||
VLINE(Uint16, DRAW_SETPIXEL_RGB555, draw_end);
|
||||
break;
|
||||
}
|
||||
} else if (ABS(x1 - x2) == ABS(y1 - y2)) {
|
||||
switch (blendMode) {
|
||||
case SDL_BLENDMODE_BLEND:
|
||||
DLINE(Uint16, DRAW_SETPIXEL_BLEND_RGB555, draw_end);
|
||||
break;
|
||||
case SDL_BLENDMODE_ADD:
|
||||
DLINE(Uint16, DRAW_SETPIXEL_ADD_RGB555, draw_end);
|
||||
break;
|
||||
case SDL_BLENDMODE_MOD:
|
||||
DLINE(Uint16, DRAW_SETPIXEL_MOD_RGB555, draw_end);
|
||||
break;
|
||||
default:
|
||||
DLINE(Uint16, DRAW_SETPIXEL_RGB555, draw_end);
|
||||
break;
|
||||
}
|
||||
} else {
|
||||
switch (blendMode) {
|
||||
case SDL_BLENDMODE_BLEND:
|
||||
AALINE(x1, y1, x2, y2,
|
||||
DRAW_SETPIXELXY_BLEND_RGB555, DRAW_SETPIXELXY_BLEND_RGB555,
|
||||
draw_end);
|
||||
break;
|
||||
case SDL_BLENDMODE_ADD:
|
||||
AALINE(x1, y1, x2, y2,
|
||||
DRAW_SETPIXELXY_ADD_RGB555, DRAW_SETPIXELXY_ADD_RGB555,
|
||||
draw_end);
|
||||
break;
|
||||
case SDL_BLENDMODE_MOD:
|
||||
AALINE(x1, y1, x2, y2,
|
||||
DRAW_SETPIXELXY_MOD_RGB555, DRAW_SETPIXELXY_MOD_RGB555,
|
||||
draw_end);
|
||||
break;
|
||||
default:
|
||||
AALINE(x1, y1, x2, y2,
|
||||
DRAW_SETPIXELXY_RGB555, DRAW_SETPIXELXY_BLEND_RGB555,
|
||||
draw_end);
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
SDL_BlendLine_RGB565(SDL_Surface * dst, int x1, int y1, int x2, int y2,
|
||||
SDL_BlendMode blendMode, Uint8 _r, Uint8 _g, Uint8 _b, Uint8 _a,
|
||||
SDL_bool draw_end)
|
||||
{
|
||||
const SDL_PixelFormat *fmt = dst->format;
|
||||
unsigned r, g, b, a, inva;
|
||||
|
||||
if (blendMode == SDL_BLENDMODE_BLEND || blendMode == SDL_BLENDMODE_ADD) {
|
||||
r = DRAW_MUL(_r, _a);
|
||||
g = DRAW_MUL(_g, _a);
|
||||
b = DRAW_MUL(_b, _a);
|
||||
a = _a;
|
||||
} else {
|
||||
r = _r;
|
||||
g = _g;
|
||||
b = _b;
|
||||
a = _a;
|
||||
}
|
||||
inva = (a ^ 0xff);
|
||||
|
||||
if (y1 == y2) {
|
||||
switch (blendMode) {
|
||||
case SDL_BLENDMODE_BLEND:
|
||||
HLINE(Uint16, DRAW_SETPIXEL_BLEND_RGB565, draw_end);
|
||||
break;
|
||||
case SDL_BLENDMODE_ADD:
|
||||
HLINE(Uint16, DRAW_SETPIXEL_ADD_RGB565, draw_end);
|
||||
break;
|
||||
case SDL_BLENDMODE_MOD:
|
||||
HLINE(Uint16, DRAW_SETPIXEL_MOD_RGB565, draw_end);
|
||||
break;
|
||||
default:
|
||||
HLINE(Uint16, DRAW_SETPIXEL_RGB565, draw_end);
|
||||
break;
|
||||
}
|
||||
} else if (x1 == x2) {
|
||||
switch (blendMode) {
|
||||
case SDL_BLENDMODE_BLEND:
|
||||
VLINE(Uint16, DRAW_SETPIXEL_BLEND_RGB565, draw_end);
|
||||
break;
|
||||
case SDL_BLENDMODE_ADD:
|
||||
VLINE(Uint16, DRAW_SETPIXEL_ADD_RGB565, draw_end);
|
||||
break;
|
||||
case SDL_BLENDMODE_MOD:
|
||||
VLINE(Uint16, DRAW_SETPIXEL_MOD_RGB565, draw_end);
|
||||
break;
|
||||
default:
|
||||
VLINE(Uint16, DRAW_SETPIXEL_RGB565, draw_end);
|
||||
break;
|
||||
}
|
||||
} else if (ABS(x1 - x2) == ABS(y1 - y2)) {
|
||||
switch (blendMode) {
|
||||
case SDL_BLENDMODE_BLEND:
|
||||
DLINE(Uint16, DRAW_SETPIXEL_BLEND_RGB565, draw_end);
|
||||
break;
|
||||
case SDL_BLENDMODE_ADD:
|
||||
DLINE(Uint16, DRAW_SETPIXEL_ADD_RGB565, draw_end);
|
||||
break;
|
||||
case SDL_BLENDMODE_MOD:
|
||||
DLINE(Uint16, DRAW_SETPIXEL_MOD_RGB565, draw_end);
|
||||
break;
|
||||
default:
|
||||
DLINE(Uint16, DRAW_SETPIXEL_RGB565, draw_end);
|
||||
break;
|
||||
}
|
||||
} else {
|
||||
switch (blendMode) {
|
||||
case SDL_BLENDMODE_BLEND:
|
||||
AALINE(x1, y1, x2, y2,
|
||||
DRAW_SETPIXELXY_BLEND_RGB565, DRAW_SETPIXELXY_BLEND_RGB565,
|
||||
draw_end);
|
||||
break;
|
||||
case SDL_BLENDMODE_ADD:
|
||||
AALINE(x1, y1, x2, y2,
|
||||
DRAW_SETPIXELXY_ADD_RGB565, DRAW_SETPIXELXY_ADD_RGB565,
|
||||
draw_end);
|
||||
break;
|
||||
case SDL_BLENDMODE_MOD:
|
||||
AALINE(x1, y1, x2, y2,
|
||||
DRAW_SETPIXELXY_MOD_RGB565, DRAW_SETPIXELXY_MOD_RGB565,
|
||||
draw_end);
|
||||
break;
|
||||
default:
|
||||
AALINE(x1, y1, x2, y2,
|
||||
DRAW_SETPIXELXY_RGB565, DRAW_SETPIXELXY_BLEND_RGB565,
|
||||
draw_end);
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
SDL_BlendLine_RGB4(SDL_Surface * dst, int x1, int y1, int x2, int y2,
|
||||
SDL_BlendMode blendMode, Uint8 _r, Uint8 _g, Uint8 _b, Uint8 _a,
|
||||
SDL_bool draw_end)
|
||||
{
|
||||
const SDL_PixelFormat *fmt = dst->format;
|
||||
unsigned r, g, b, a, inva;
|
||||
|
||||
if (blendMode == SDL_BLENDMODE_BLEND || blendMode == SDL_BLENDMODE_ADD) {
|
||||
r = DRAW_MUL(_r, _a);
|
||||
g = DRAW_MUL(_g, _a);
|
||||
b = DRAW_MUL(_b, _a);
|
||||
a = _a;
|
||||
} else {
|
||||
r = _r;
|
||||
g = _g;
|
||||
b = _b;
|
||||
a = _a;
|
||||
}
|
||||
inva = (a ^ 0xff);
|
||||
|
||||
if (y1 == y2) {
|
||||
switch (blendMode) {
|
||||
case SDL_BLENDMODE_BLEND:
|
||||
HLINE(Uint32, DRAW_SETPIXEL_BLEND_RGB, draw_end);
|
||||
break;
|
||||
case SDL_BLENDMODE_ADD:
|
||||
HLINE(Uint32, DRAW_SETPIXEL_ADD_RGB, draw_end);
|
||||
break;
|
||||
case SDL_BLENDMODE_MOD:
|
||||
HLINE(Uint32, DRAW_SETPIXEL_MOD_RGB, draw_end);
|
||||
break;
|
||||
default:
|
||||
HLINE(Uint32, DRAW_SETPIXEL_RGB, draw_end);
|
||||
break;
|
||||
}
|
||||
} else if (x1 == x2) {
|
||||
switch (blendMode) {
|
||||
case SDL_BLENDMODE_BLEND:
|
||||
VLINE(Uint32, DRAW_SETPIXEL_BLEND_RGB, draw_end);
|
||||
break;
|
||||
case SDL_BLENDMODE_ADD:
|
||||
VLINE(Uint32, DRAW_SETPIXEL_ADD_RGB, draw_end);
|
||||
break;
|
||||
case SDL_BLENDMODE_MOD:
|
||||
VLINE(Uint32, DRAW_SETPIXEL_MOD_RGB, draw_end);
|
||||
break;
|
||||
default:
|
||||
VLINE(Uint32, DRAW_SETPIXEL_RGB, draw_end);
|
||||
break;
|
||||
}
|
||||
} else if (ABS(x1 - x2) == ABS(y1 - y2)) {
|
||||
switch (blendMode) {
|
||||
case SDL_BLENDMODE_BLEND:
|
||||
DLINE(Uint32, DRAW_SETPIXEL_BLEND_RGB, draw_end);
|
||||
break;
|
||||
case SDL_BLENDMODE_ADD:
|
||||
DLINE(Uint32, DRAW_SETPIXEL_ADD_RGB, draw_end);
|
||||
break;
|
||||
case SDL_BLENDMODE_MOD:
|
||||
DLINE(Uint32, DRAW_SETPIXEL_MOD_RGB, draw_end);
|
||||
break;
|
||||
default:
|
||||
DLINE(Uint32, DRAW_SETPIXEL_RGB, draw_end);
|
||||
break;
|
||||
}
|
||||
} else {
|
||||
switch (blendMode) {
|
||||
case SDL_BLENDMODE_BLEND:
|
||||
AALINE(x1, y1, x2, y2,
|
||||
DRAW_SETPIXELXY4_BLEND_RGB, DRAW_SETPIXELXY4_BLEND_RGB,
|
||||
draw_end);
|
||||
break;
|
||||
case SDL_BLENDMODE_ADD:
|
||||
AALINE(x1, y1, x2, y2,
|
||||
DRAW_SETPIXELXY4_ADD_RGB, DRAW_SETPIXELXY4_ADD_RGB,
|
||||
draw_end);
|
||||
break;
|
||||
case SDL_BLENDMODE_MOD:
|
||||
AALINE(x1, y1, x2, y2,
|
||||
DRAW_SETPIXELXY4_MOD_RGB, DRAW_SETPIXELXY4_MOD_RGB,
|
||||
draw_end);
|
||||
break;
|
||||
default:
|
||||
AALINE(x1, y1, x2, y2,
|
||||
DRAW_SETPIXELXY4_RGB, DRAW_SETPIXELXY4_BLEND_RGB,
|
||||
draw_end);
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
SDL_BlendLine_RGBA4(SDL_Surface * dst, int x1, int y1, int x2, int y2,
|
||||
SDL_BlendMode blendMode, Uint8 _r, Uint8 _g, Uint8 _b, Uint8 _a,
|
||||
SDL_bool draw_end)
|
||||
{
|
||||
const SDL_PixelFormat *fmt = dst->format;
|
||||
unsigned r, g, b, a, inva;
|
||||
|
||||
if (blendMode == SDL_BLENDMODE_BLEND || blendMode == SDL_BLENDMODE_ADD) {
|
||||
r = DRAW_MUL(_r, _a);
|
||||
g = DRAW_MUL(_g, _a);
|
||||
b = DRAW_MUL(_b, _a);
|
||||
a = _a;
|
||||
} else {
|
||||
r = _r;
|
||||
g = _g;
|
||||
b = _b;
|
||||
a = _a;
|
||||
}
|
||||
inva = (a ^ 0xff);
|
||||
|
||||
if (y1 == y2) {
|
||||
switch (blendMode) {
|
||||
case SDL_BLENDMODE_BLEND:
|
||||
HLINE(Uint32, DRAW_SETPIXEL_BLEND_RGBA, draw_end);
|
||||
break;
|
||||
case SDL_BLENDMODE_ADD:
|
||||
HLINE(Uint32, DRAW_SETPIXEL_ADD_RGBA, draw_end);
|
||||
break;
|
||||
case SDL_BLENDMODE_MOD:
|
||||
HLINE(Uint32, DRAW_SETPIXEL_MOD_RGBA, draw_end);
|
||||
break;
|
||||
default:
|
||||
HLINE(Uint32, DRAW_SETPIXEL_RGBA, draw_end);
|
||||
break;
|
||||
}
|
||||
} else if (x1 == x2) {
|
||||
switch (blendMode) {
|
||||
case SDL_BLENDMODE_BLEND:
|
||||
VLINE(Uint32, DRAW_SETPIXEL_BLEND_RGBA, draw_end);
|
||||
break;
|
||||
case SDL_BLENDMODE_ADD:
|
||||
VLINE(Uint32, DRAW_SETPIXEL_ADD_RGBA, draw_end);
|
||||
break;
|
||||
case SDL_BLENDMODE_MOD:
|
||||
VLINE(Uint32, DRAW_SETPIXEL_MOD_RGBA, draw_end);
|
||||
break;
|
||||
default:
|
||||
VLINE(Uint32, DRAW_SETPIXEL_RGBA, draw_end);
|
||||
break;
|
||||
}
|
||||
} else if (ABS(x1 - x2) == ABS(y1 - y2)) {
|
||||
switch (blendMode) {
|
||||
case SDL_BLENDMODE_BLEND:
|
||||
DLINE(Uint32, DRAW_SETPIXEL_BLEND_RGBA, draw_end);
|
||||
break;
|
||||
case SDL_BLENDMODE_ADD:
|
||||
DLINE(Uint32, DRAW_SETPIXEL_ADD_RGBA, draw_end);
|
||||
break;
|
||||
case SDL_BLENDMODE_MOD:
|
||||
DLINE(Uint32, DRAW_SETPIXEL_MOD_RGBA, draw_end);
|
||||
break;
|
||||
default:
|
||||
DLINE(Uint32, DRAW_SETPIXEL_RGBA, draw_end);
|
||||
break;
|
||||
}
|
||||
} else {
|
||||
switch (blendMode) {
|
||||
case SDL_BLENDMODE_BLEND:
|
||||
AALINE(x1, y1, x2, y2,
|
||||
DRAW_SETPIXELXY4_BLEND_RGBA, DRAW_SETPIXELXY4_BLEND_RGBA,
|
||||
draw_end);
|
||||
break;
|
||||
case SDL_BLENDMODE_ADD:
|
||||
AALINE(x1, y1, x2, y2,
|
||||
DRAW_SETPIXELXY4_ADD_RGBA, DRAW_SETPIXELXY4_ADD_RGBA,
|
||||
draw_end);
|
||||
break;
|
||||
case SDL_BLENDMODE_MOD:
|
||||
AALINE(x1, y1, x2, y2,
|
||||
DRAW_SETPIXELXY4_MOD_RGBA, DRAW_SETPIXELXY4_MOD_RGBA,
|
||||
draw_end);
|
||||
break;
|
||||
default:
|
||||
AALINE(x1, y1, x2, y2,
|
||||
DRAW_SETPIXELXY4_RGBA, DRAW_SETPIXELXY4_BLEND_RGBA,
|
||||
draw_end);
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
SDL_BlendLine_RGB888(SDL_Surface * dst, int x1, int y1, int x2, int y2,
|
||||
SDL_BlendMode blendMode, Uint8 _r, Uint8 _g, Uint8 _b, Uint8 _a,
|
||||
SDL_bool draw_end)
|
||||
{
|
||||
const SDL_PixelFormat *fmt = dst->format;
|
||||
unsigned r, g, b, a, inva;
|
||||
|
||||
if (blendMode == SDL_BLENDMODE_BLEND || blendMode == SDL_BLENDMODE_ADD) {
|
||||
r = DRAW_MUL(_r, _a);
|
||||
g = DRAW_MUL(_g, _a);
|
||||
b = DRAW_MUL(_b, _a);
|
||||
a = _a;
|
||||
} else {
|
||||
r = _r;
|
||||
g = _g;
|
||||
b = _b;
|
||||
a = _a;
|
||||
}
|
||||
inva = (a ^ 0xff);
|
||||
|
||||
if (y1 == y2) {
|
||||
switch (blendMode) {
|
||||
case SDL_BLENDMODE_BLEND:
|
||||
HLINE(Uint32, DRAW_SETPIXEL_BLEND_RGB888, draw_end);
|
||||
break;
|
||||
case SDL_BLENDMODE_ADD:
|
||||
HLINE(Uint32, DRAW_SETPIXEL_ADD_RGB888, draw_end);
|
||||
break;
|
||||
case SDL_BLENDMODE_MOD:
|
||||
HLINE(Uint32, DRAW_SETPIXEL_MOD_RGB888, draw_end);
|
||||
break;
|
||||
default:
|
||||
HLINE(Uint32, DRAW_SETPIXEL_RGB888, draw_end);
|
||||
break;
|
||||
}
|
||||
} else if (x1 == x2) {
|
||||
switch (blendMode) {
|
||||
case SDL_BLENDMODE_BLEND:
|
||||
VLINE(Uint32, DRAW_SETPIXEL_BLEND_RGB888, draw_end);
|
||||
break;
|
||||
case SDL_BLENDMODE_ADD:
|
||||
VLINE(Uint32, DRAW_SETPIXEL_ADD_RGB888, draw_end);
|
||||
break;
|
||||
case SDL_BLENDMODE_MOD:
|
||||
VLINE(Uint32, DRAW_SETPIXEL_MOD_RGB888, draw_end);
|
||||
break;
|
||||
default:
|
||||
VLINE(Uint32, DRAW_SETPIXEL_RGB888, draw_end);
|
||||
break;
|
||||
}
|
||||
} else if (ABS(x1 - x2) == ABS(y1 - y2)) {
|
||||
switch (blendMode) {
|
||||
case SDL_BLENDMODE_BLEND:
|
||||
DLINE(Uint32, DRAW_SETPIXEL_BLEND_RGB888, draw_end);
|
||||
break;
|
||||
case SDL_BLENDMODE_ADD:
|
||||
DLINE(Uint32, DRAW_SETPIXEL_ADD_RGB888, draw_end);
|
||||
break;
|
||||
case SDL_BLENDMODE_MOD:
|
||||
DLINE(Uint32, DRAW_SETPIXEL_MOD_RGB888, draw_end);
|
||||
break;
|
||||
default:
|
||||
DLINE(Uint32, DRAW_SETPIXEL_RGB888, draw_end);
|
||||
break;
|
||||
}
|
||||
} else {
|
||||
switch (blendMode) {
|
||||
case SDL_BLENDMODE_BLEND:
|
||||
AALINE(x1, y1, x2, y2,
|
||||
DRAW_SETPIXELXY_BLEND_RGB888, DRAW_SETPIXELXY_BLEND_RGB888,
|
||||
draw_end);
|
||||
break;
|
||||
case SDL_BLENDMODE_ADD:
|
||||
AALINE(x1, y1, x2, y2,
|
||||
DRAW_SETPIXELXY_ADD_RGB888, DRAW_SETPIXELXY_ADD_RGB888,
|
||||
draw_end);
|
||||
break;
|
||||
case SDL_BLENDMODE_MOD:
|
||||
AALINE(x1, y1, x2, y2,
|
||||
DRAW_SETPIXELXY_MOD_RGB888, DRAW_SETPIXELXY_MOD_RGB888,
|
||||
draw_end);
|
||||
break;
|
||||
default:
|
||||
AALINE(x1, y1, x2, y2,
|
||||
DRAW_SETPIXELXY_RGB888, DRAW_SETPIXELXY_BLEND_RGB888,
|
||||
draw_end);
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
SDL_BlendLine_ARGB8888(SDL_Surface * dst, int x1, int y1, int x2, int y2,
|
||||
SDL_BlendMode blendMode, Uint8 _r, Uint8 _g, Uint8 _b, Uint8 _a,
|
||||
SDL_bool draw_end)
|
||||
{
|
||||
const SDL_PixelFormat *fmt = dst->format;
|
||||
unsigned r, g, b, a, inva;
|
||||
|
||||
if (blendMode == SDL_BLENDMODE_BLEND || blendMode == SDL_BLENDMODE_ADD) {
|
||||
r = DRAW_MUL(_r, _a);
|
||||
g = DRAW_MUL(_g, _a);
|
||||
b = DRAW_MUL(_b, _a);
|
||||
a = _a;
|
||||
} else {
|
||||
r = _r;
|
||||
g = _g;
|
||||
b = _b;
|
||||
a = _a;
|
||||
}
|
||||
inva = (a ^ 0xff);
|
||||
|
||||
if (y1 == y2) {
|
||||
switch (blendMode) {
|
||||
case SDL_BLENDMODE_BLEND:
|
||||
HLINE(Uint32, DRAW_SETPIXEL_BLEND_ARGB8888, draw_end);
|
||||
break;
|
||||
case SDL_BLENDMODE_ADD:
|
||||
HLINE(Uint32, DRAW_SETPIXEL_ADD_ARGB8888, draw_end);
|
||||
break;
|
||||
case SDL_BLENDMODE_MOD:
|
||||
HLINE(Uint32, DRAW_SETPIXEL_MOD_ARGB8888, draw_end);
|
||||
break;
|
||||
default:
|
||||
HLINE(Uint32, DRAW_SETPIXEL_ARGB8888, draw_end);
|
||||
break;
|
||||
}
|
||||
} else if (x1 == x2) {
|
||||
switch (blendMode) {
|
||||
case SDL_BLENDMODE_BLEND:
|
||||
VLINE(Uint32, DRAW_SETPIXEL_BLEND_ARGB8888, draw_end);
|
||||
break;
|
||||
case SDL_BLENDMODE_ADD:
|
||||
VLINE(Uint32, DRAW_SETPIXEL_ADD_ARGB8888, draw_end);
|
||||
break;
|
||||
case SDL_BLENDMODE_MOD:
|
||||
VLINE(Uint32, DRAW_SETPIXEL_MOD_ARGB8888, draw_end);
|
||||
break;
|
||||
default:
|
||||
VLINE(Uint32, DRAW_SETPIXEL_ARGB8888, draw_end);
|
||||
break;
|
||||
}
|
||||
} else if (ABS(x1 - x2) == ABS(y1 - y2)) {
|
||||
switch (blendMode) {
|
||||
case SDL_BLENDMODE_BLEND:
|
||||
DLINE(Uint32, DRAW_SETPIXEL_BLEND_ARGB8888, draw_end);
|
||||
break;
|
||||
case SDL_BLENDMODE_ADD:
|
||||
DLINE(Uint32, DRAW_SETPIXEL_ADD_ARGB8888, draw_end);
|
||||
break;
|
||||
case SDL_BLENDMODE_MOD:
|
||||
DLINE(Uint32, DRAW_SETPIXEL_MOD_ARGB8888, draw_end);
|
||||
break;
|
||||
default:
|
||||
DLINE(Uint32, DRAW_SETPIXEL_ARGB8888, draw_end);
|
||||
break;
|
||||
}
|
||||
} else {
|
||||
switch (blendMode) {
|
||||
case SDL_BLENDMODE_BLEND:
|
||||
AALINE(x1, y1, x2, y2,
|
||||
DRAW_SETPIXELXY_BLEND_ARGB8888, DRAW_SETPIXELXY_BLEND_ARGB8888,
|
||||
draw_end);
|
||||
break;
|
||||
case SDL_BLENDMODE_ADD:
|
||||
AALINE(x1, y1, x2, y2,
|
||||
DRAW_SETPIXELXY_ADD_ARGB8888, DRAW_SETPIXELXY_ADD_ARGB8888,
|
||||
draw_end);
|
||||
break;
|
||||
case SDL_BLENDMODE_MOD:
|
||||
AALINE(x1, y1, x2, y2,
|
||||
DRAW_SETPIXELXY_MOD_ARGB8888, DRAW_SETPIXELXY_MOD_ARGB8888,
|
||||
draw_end);
|
||||
break;
|
||||
default:
|
||||
AALINE(x1, y1, x2, y2,
|
||||
DRAW_SETPIXELXY_ARGB8888, DRAW_SETPIXELXY_BLEND_ARGB8888,
|
||||
draw_end);
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
typedef void (*BlendLineFunc) (SDL_Surface * dst,
|
||||
int x1, int y1, int x2, int y2,
|
||||
SDL_BlendMode blendMode,
|
||||
Uint8 r, Uint8 g, Uint8 b, Uint8 a,
|
||||
SDL_bool draw_end);
|
||||
|
||||
static BlendLineFunc
|
||||
SDL_CalculateBlendLineFunc(const SDL_PixelFormat * fmt)
|
||||
{
|
||||
switch (fmt->BytesPerPixel) {
|
||||
case 2:
|
||||
if (fmt->Rmask == 0x7C00) {
|
||||
return SDL_BlendLine_RGB555;
|
||||
} else if (fmt->Rmask == 0xF800) {
|
||||
return SDL_BlendLine_RGB565;
|
||||
} else {
|
||||
return SDL_BlendLine_RGB2;
|
||||
}
|
||||
break;
|
||||
case 4:
|
||||
if (fmt->Rmask == 0x00FF0000) {
|
||||
if (fmt->Amask) {
|
||||
return SDL_BlendLine_ARGB8888;
|
||||
} else {
|
||||
return SDL_BlendLine_RGB888;
|
||||
}
|
||||
} else {
|
||||
if (fmt->Amask) {
|
||||
return SDL_BlendLine_RGBA4;
|
||||
} else {
|
||||
return SDL_BlendLine_RGB4;
|
||||
}
|
||||
}
|
||||
}
|
||||
return NULL;
|
||||
}
|
||||
|
||||
int
|
||||
SDL_BlendLine(SDL_Surface * dst, int x1, int y1, int x2, int y2,
|
||||
SDL_BlendMode blendMode, Uint8 r, Uint8 g, Uint8 b, Uint8 a)
|
||||
{
|
||||
BlendLineFunc func;
|
||||
|
||||
if (!dst) {
|
||||
SDL_SetError("SDL_BlendLine(): Passed NULL destination surface");
|
||||
return -1;
|
||||
}
|
||||
|
||||
func = SDL_CalculateBlendLineFunc(dst->format);
|
||||
if (!func) {
|
||||
SDL_SetError("SDL_BlendLine(): Unsupported surface format");
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* Perform clipping */
|
||||
/* FIXME: We don't actually want to clip, as it may change line slope */
|
||||
if (!SDL_IntersectRectAndLine(&dst->clip_rect, &x1, &y1, &x2, &y2)) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
func(dst, x1, y1, x2, y2, blendMode, r, g, b, a, SDL_TRUE);
|
||||
return 0;
|
||||
}
|
||||
|
||||
int
|
||||
SDL_BlendLines(SDL_Surface * dst, const SDL_Point * points, int count,
|
||||
SDL_BlendMode blendMode, Uint8 r, Uint8 g, Uint8 b, Uint8 a)
|
||||
{
|
||||
int i;
|
||||
int x1, y1;
|
||||
int x2, y2;
|
||||
SDL_bool draw_end;
|
||||
BlendLineFunc func;
|
||||
|
||||
if (!dst) {
|
||||
SDL_SetError("SDL_BlendLines(): Passed NULL destination surface");
|
||||
return -1;
|
||||
}
|
||||
|
||||
func = SDL_CalculateBlendLineFunc(dst->format);
|
||||
if (!func) {
|
||||
SDL_SetError("SDL_BlendLines(): Unsupported surface format");
|
||||
return -1;
|
||||
}
|
||||
|
||||
for (i = 1; i < count; ++i) {
|
||||
x1 = points[i-1].x;
|
||||
y1 = points[i-1].y;
|
||||
x2 = points[i].x;
|
||||
y2 = points[i].y;
|
||||
|
||||
/* Perform clipping */
|
||||
/* FIXME: We don't actually want to clip, as it may change line slope */
|
||||
if (!SDL_IntersectRectAndLine(&dst->clip_rect, &x1, &y1, &x2, &y2)) {
|
||||
continue;
|
||||
}
|
||||
|
||||
/* Draw the end if it was clipped */
|
||||
draw_end = (x2 != points[i].x || y2 != points[i].y);
|
||||
|
||||
func(dst, x1, y1, x2, y2, blendMode, r, g, b, a, draw_end);
|
||||
}
|
||||
if (points[0].x != points[count-1].x || points[0].y != points[count-1].y) {
|
||||
SDL_BlendPoint(dst, points[count-1].x, points[count-1].y,
|
||||
blendMode, r, g, b, a);
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
#endif /* !SDL_RENDER_DISABLED */
|
||||
|
||||
/* vi: set ts=4 sw=4 expandtab: */
|
||||
@@ -0,0 +1,27 @@
|
||||
/*
|
||||
Simple DirectMedia Layer
|
||||
Copyright (C) 1997-2011 Sam Lantinga <slouken@libsdl.org>
|
||||
|
||||
This software is provided 'as-is', without any express or implied
|
||||
warranty. In no event will the authors be held liable for any damages
|
||||
arising from the use of this software.
|
||||
|
||||
Permission is granted to anyone to use this software for any purpose,
|
||||
including commercial applications, and to alter it and redistribute it
|
||||
freely, subject to the following restrictions:
|
||||
|
||||
1. The origin of this software must not be misrepresented; you must not
|
||||
claim that you wrote the original software. If you use this software
|
||||
in a product, an acknowledgment in the product documentation would be
|
||||
appreciated but is not required.
|
||||
2. Altered source versions must be plainly marked as such, and must not be
|
||||
misrepresented as being the original software.
|
||||
3. This notice may not be removed or altered from any source distribution.
|
||||
*/
|
||||
#include "SDL_config.h"
|
||||
|
||||
|
||||
extern int SDL_BlendLine(SDL_Surface * dst, int x1, int y1, int x2, int y2, SDL_BlendMode blendMode, Uint8 r, Uint8 g, Uint8 b, Uint8 a);
|
||||
extern int SDL_BlendLines(SDL_Surface * dst, const SDL_Point * points, int count, SDL_BlendMode blendMode, Uint8 r, Uint8 g, Uint8 b, Uint8 a);
|
||||
|
||||
/* vi: set ts=4 sw=4 expandtab: */
|
||||
@@ -0,0 +1,349 @@
|
||||
/*
|
||||
Simple DirectMedia Layer
|
||||
Copyright (C) 1997-2011 Sam Lantinga <slouken@libsdl.org>
|
||||
|
||||
This software is provided 'as-is', without any express or implied
|
||||
warranty. In no event will the authors be held liable for any damages
|
||||
arising from the use of this software.
|
||||
|
||||
Permission is granted to anyone to use this software for any purpose,
|
||||
including commercial applications, and to alter it and redistribute it
|
||||
freely, subject to the following restrictions:
|
||||
|
||||
1. The origin of this software must not be misrepresented; you must not
|
||||
claim that you wrote the original software. If you use this software
|
||||
in a product, an acknowledgment in the product documentation would be
|
||||
appreciated but is not required.
|
||||
2. Altered source versions must be plainly marked as such, and must not be
|
||||
misrepresented as being the original software.
|
||||
3. This notice may not be removed or altered from any source distribution.
|
||||
*/
|
||||
#include "SDL_config.h"
|
||||
|
||||
#if !SDL_RENDER_DISABLED
|
||||
|
||||
#include "SDL_draw.h"
|
||||
#include "SDL_blendpoint.h"
|
||||
|
||||
|
||||
static int
|
||||
SDL_BlendPoint_RGB555(SDL_Surface * dst, int x, int y, SDL_BlendMode blendMode, Uint8 r,
|
||||
Uint8 g, Uint8 b, Uint8 a)
|
||||
{
|
||||
unsigned inva = 0xff - a;
|
||||
|
||||
switch (blendMode) {
|
||||
case SDL_BLENDMODE_BLEND:
|
||||
DRAW_SETPIXELXY_BLEND_RGB555(x, y);
|
||||
break;
|
||||
case SDL_BLENDMODE_ADD:
|
||||
DRAW_SETPIXELXY_ADD_RGB555(x, y);
|
||||
break;
|
||||
case SDL_BLENDMODE_MOD:
|
||||
DRAW_SETPIXELXY_MOD_RGB555(x, y);
|
||||
break;
|
||||
default:
|
||||
DRAW_SETPIXELXY_RGB555(x, y);
|
||||
break;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
SDL_BlendPoint_RGB565(SDL_Surface * dst, int x, int y, SDL_BlendMode blendMode, Uint8 r,
|
||||
Uint8 g, Uint8 b, Uint8 a)
|
||||
{
|
||||
unsigned inva = 0xff - a;
|
||||
|
||||
switch (blendMode) {
|
||||
case SDL_BLENDMODE_BLEND:
|
||||
DRAW_SETPIXELXY_BLEND_RGB565(x, y);
|
||||
break;
|
||||
case SDL_BLENDMODE_ADD:
|
||||
DRAW_SETPIXELXY_ADD_RGB565(x, y);
|
||||
break;
|
||||
case SDL_BLENDMODE_MOD:
|
||||
DRAW_SETPIXELXY_MOD_RGB565(x, y);
|
||||
break;
|
||||
default:
|
||||
DRAW_SETPIXELXY_RGB565(x, y);
|
||||
break;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
SDL_BlendPoint_RGB888(SDL_Surface * dst, int x, int y, SDL_BlendMode blendMode, Uint8 r,
|
||||
Uint8 g, Uint8 b, Uint8 a)
|
||||
{
|
||||
unsigned inva = 0xff - a;
|
||||
|
||||
switch (blendMode) {
|
||||
case SDL_BLENDMODE_BLEND:
|
||||
DRAW_SETPIXELXY_BLEND_RGB888(x, y);
|
||||
break;
|
||||
case SDL_BLENDMODE_ADD:
|
||||
DRAW_SETPIXELXY_ADD_RGB888(x, y);
|
||||
break;
|
||||
case SDL_BLENDMODE_MOD:
|
||||
DRAW_SETPIXELXY_MOD_RGB888(x, y);
|
||||
break;
|
||||
default:
|
||||
DRAW_SETPIXELXY_RGB888(x, y);
|
||||
break;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
SDL_BlendPoint_ARGB8888(SDL_Surface * dst, int x, int y, SDL_BlendMode blendMode,
|
||||
Uint8 r, Uint8 g, Uint8 b, Uint8 a)
|
||||
{
|
||||
unsigned inva = 0xff - a;
|
||||
|
||||
switch (blendMode) {
|
||||
case SDL_BLENDMODE_BLEND:
|
||||
DRAW_SETPIXELXY_BLEND_ARGB8888(x, y);
|
||||
break;
|
||||
case SDL_BLENDMODE_ADD:
|
||||
DRAW_SETPIXELXY_ADD_ARGB8888(x, y);
|
||||
break;
|
||||
case SDL_BLENDMODE_MOD:
|
||||
DRAW_SETPIXELXY_MOD_ARGB8888(x, y);
|
||||
break;
|
||||
default:
|
||||
DRAW_SETPIXELXY_ARGB8888(x, y);
|
||||
break;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
SDL_BlendPoint_RGB(SDL_Surface * dst, int x, int y, SDL_BlendMode blendMode, Uint8 r,
|
||||
Uint8 g, Uint8 b, Uint8 a)
|
||||
{
|
||||
SDL_PixelFormat *fmt = dst->format;
|
||||
unsigned inva = 0xff - a;
|
||||
|
||||
switch (fmt->BytesPerPixel) {
|
||||
case 2:
|
||||
switch (blendMode) {
|
||||
case SDL_BLENDMODE_BLEND:
|
||||
DRAW_SETPIXELXY2_BLEND_RGB(x, y);
|
||||
break;
|
||||
case SDL_BLENDMODE_ADD:
|
||||
DRAW_SETPIXELXY2_ADD_RGB(x, y);
|
||||
break;
|
||||
case SDL_BLENDMODE_MOD:
|
||||
DRAW_SETPIXELXY2_MOD_RGB(x, y);
|
||||
break;
|
||||
default:
|
||||
DRAW_SETPIXELXY2_RGB(x, y);
|
||||
break;
|
||||
}
|
||||
return 0;
|
||||
case 4:
|
||||
switch (blendMode) {
|
||||
case SDL_BLENDMODE_BLEND:
|
||||
DRAW_SETPIXELXY4_BLEND_RGB(x, y);
|
||||
break;
|
||||
case SDL_BLENDMODE_ADD:
|
||||
DRAW_SETPIXELXY4_ADD_RGB(x, y);
|
||||
break;
|
||||
case SDL_BLENDMODE_MOD:
|
||||
DRAW_SETPIXELXY4_MOD_RGB(x, y);
|
||||
break;
|
||||
default:
|
||||
DRAW_SETPIXELXY4_RGB(x, y);
|
||||
break;
|
||||
}
|
||||
return 0;
|
||||
default:
|
||||
SDL_Unsupported();
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
|
||||
static int
|
||||
SDL_BlendPoint_RGBA(SDL_Surface * dst, int x, int y, SDL_BlendMode blendMode, Uint8 r,
|
||||
Uint8 g, Uint8 b, Uint8 a)
|
||||
{
|
||||
SDL_PixelFormat *fmt = dst->format;
|
||||
unsigned inva = 0xff - a;
|
||||
|
||||
switch (fmt->BytesPerPixel) {
|
||||
case 4:
|
||||
switch (blendMode) {
|
||||
case SDL_BLENDMODE_BLEND:
|
||||
DRAW_SETPIXELXY4_BLEND_RGBA(x, y);
|
||||
break;
|
||||
case SDL_BLENDMODE_ADD:
|
||||
DRAW_SETPIXELXY4_ADD_RGBA(x, y);
|
||||
break;
|
||||
case SDL_BLENDMODE_MOD:
|
||||
DRAW_SETPIXELXY4_MOD_RGBA(x, y);
|
||||
break;
|
||||
default:
|
||||
DRAW_SETPIXELXY4_RGBA(x, y);
|
||||
break;
|
||||
}
|
||||
return 0;
|
||||
default:
|
||||
SDL_Unsupported();
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
|
||||
int
|
||||
SDL_BlendPoint(SDL_Surface * dst, int x, int y, SDL_BlendMode blendMode, Uint8 r,
|
||||
Uint8 g, Uint8 b, Uint8 a)
|
||||
{
|
||||
if (!dst) {
|
||||
SDL_SetError("Passed NULL destination surface");
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* This function doesn't work on surfaces < 8 bpp */
|
||||
if (dst->format->BitsPerPixel < 8) {
|
||||
SDL_SetError("SDL_BlendPoint(): Unsupported surface format");
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* Perform clipping */
|
||||
if (x < dst->clip_rect.x || y < dst->clip_rect.y ||
|
||||
x >= (dst->clip_rect.x + dst->clip_rect.w) ||
|
||||
y >= (dst->clip_rect.y + dst->clip_rect.h)) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (blendMode == SDL_BLENDMODE_BLEND || blendMode == SDL_BLENDMODE_ADD) {
|
||||
r = DRAW_MUL(r, a);
|
||||
g = DRAW_MUL(g, a);
|
||||
b = DRAW_MUL(b, a);
|
||||
}
|
||||
|
||||
switch (dst->format->BitsPerPixel) {
|
||||
case 15:
|
||||
switch (dst->format->Rmask) {
|
||||
case 0x7C00:
|
||||
return SDL_BlendPoint_RGB555(dst, x, y, blendMode, r, g, b, a);
|
||||
}
|
||||
break;
|
||||
case 16:
|
||||
switch (dst->format->Rmask) {
|
||||
case 0xF800:
|
||||
return SDL_BlendPoint_RGB565(dst, x, y, blendMode, r, g, b, a);
|
||||
}
|
||||
break;
|
||||
case 32:
|
||||
switch (dst->format->Rmask) {
|
||||
case 0x00FF0000:
|
||||
if (!dst->format->Amask) {
|
||||
return SDL_BlendPoint_RGB888(dst, x, y, blendMode, r, g, b,
|
||||
a);
|
||||
} else {
|
||||
return SDL_BlendPoint_ARGB8888(dst, x, y, blendMode, r, g, b,
|
||||
a);
|
||||
}
|
||||
break;
|
||||
}
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
if (!dst->format->Amask) {
|
||||
return SDL_BlendPoint_RGB(dst, x, y, blendMode, r, g, b, a);
|
||||
} else {
|
||||
return SDL_BlendPoint_RGBA(dst, x, y, blendMode, r, g, b, a);
|
||||
}
|
||||
}
|
||||
|
||||
int
|
||||
SDL_BlendPoints(SDL_Surface * dst, const SDL_Point * points, int count,
|
||||
SDL_BlendMode blendMode, Uint8 r, Uint8 g, Uint8 b, Uint8 a)
|
||||
{
|
||||
int minx, miny;
|
||||
int maxx, maxy;
|
||||
int i;
|
||||
int x, y;
|
||||
int (*func)(SDL_Surface * dst, int x, int y,
|
||||
SDL_BlendMode blendMode, Uint8 r, Uint8 g, Uint8 b, Uint8 a) = NULL;
|
||||
int status = 0;
|
||||
|
||||
if (!dst) {
|
||||
SDL_SetError("Passed NULL destination surface");
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* This function doesn't work on surfaces < 8 bpp */
|
||||
if (dst->format->BitsPerPixel < 8) {
|
||||
SDL_SetError("SDL_BlendPoints(): Unsupported surface format");
|
||||
return (-1);
|
||||
}
|
||||
|
||||
if (blendMode == SDL_BLENDMODE_BLEND || blendMode == SDL_BLENDMODE_ADD) {
|
||||
r = DRAW_MUL(r, a);
|
||||
g = DRAW_MUL(g, a);
|
||||
b = DRAW_MUL(b, a);
|
||||
}
|
||||
|
||||
/* FIXME: Does this function pointer slow things down significantly? */
|
||||
switch (dst->format->BitsPerPixel) {
|
||||
case 15:
|
||||
switch (dst->format->Rmask) {
|
||||
case 0x7C00:
|
||||
func = SDL_BlendPoint_RGB555;
|
||||
break;
|
||||
}
|
||||
break;
|
||||
case 16:
|
||||
switch (dst->format->Rmask) {
|
||||
case 0xF800:
|
||||
func = SDL_BlendPoint_RGB565;
|
||||
break;
|
||||
}
|
||||
break;
|
||||
case 32:
|
||||
switch (dst->format->Rmask) {
|
||||
case 0x00FF0000:
|
||||
if (!dst->format->Amask) {
|
||||
func = SDL_BlendPoint_RGB888;
|
||||
} else {
|
||||
func = SDL_BlendPoint_ARGB8888;
|
||||
}
|
||||
break;
|
||||
}
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
if (!func) {
|
||||
if (!dst->format->Amask) {
|
||||
func = SDL_BlendPoint_RGB;
|
||||
} else {
|
||||
func = SDL_BlendPoint_RGBA;
|
||||
}
|
||||
}
|
||||
|
||||
minx = dst->clip_rect.x;
|
||||
maxx = dst->clip_rect.x + dst->clip_rect.w - 1;
|
||||
miny = dst->clip_rect.y;
|
||||
maxy = dst->clip_rect.y + dst->clip_rect.h - 1;
|
||||
|
||||
for (i = 0; i < count; ++i) {
|
||||
x = points[i].x;
|
||||
y = points[i].y;
|
||||
|
||||
if (x < minx || x > maxx || y < miny || y > maxy) {
|
||||
continue;
|
||||
}
|
||||
status = func(dst, x, y, blendMode, r, g, b, a);
|
||||
}
|
||||
return status;
|
||||
}
|
||||
|
||||
#endif /* !SDL_RENDER_DISABLED */
|
||||
|
||||
/* vi: set ts=4 sw=4 expandtab: */
|
||||
@@ -0,0 +1,27 @@
|
||||
/*
|
||||
Simple DirectMedia Layer
|
||||
Copyright (C) 1997-2011 Sam Lantinga <slouken@libsdl.org>
|
||||
|
||||
This software is provided 'as-is', without any express or implied
|
||||
warranty. In no event will the authors be held liable for any damages
|
||||
arising from the use of this software.
|
||||
|
||||
Permission is granted to anyone to use this software for any purpose,
|
||||
including commercial applications, and to alter it and redistribute it
|
||||
freely, subject to the following restrictions:
|
||||
|
||||
1. The origin of this software must not be misrepresented; you must not
|
||||
claim that you wrote the original software. If you use this software
|
||||
in a product, an acknowledgment in the product documentation would be
|
||||
appreciated but is not required.
|
||||
2. Altered source versions must be plainly marked as such, and must not be
|
||||
misrepresented as being the original software.
|
||||
3. This notice may not be removed or altered from any source distribution.
|
||||
*/
|
||||
#include "SDL_config.h"
|
||||
|
||||
|
||||
extern int SDL_BlendPoint(SDL_Surface * dst, int x, int y, SDL_BlendMode blendMode, Uint8 r, Uint8 g, Uint8 b, Uint8 a);
|
||||
extern int SDL_BlendPoints(SDL_Surface * dst, const SDL_Point * points, int count, SDL_BlendMode blendMode, Uint8 r, Uint8 g, Uint8 b, Uint8 a);
|
||||
|
||||
/* vi: set ts=4 sw=4 expandtab: */
|
||||
@@ -0,0 +1,575 @@
|
||||
/*
|
||||
Simple DirectMedia Layer
|
||||
Copyright (C) 1997-2011 Sam Lantinga <slouken@libsdl.org>
|
||||
|
||||
This software is provided 'as-is', without any express or implied
|
||||
warranty. In no event will the authors be held liable for any damages
|
||||
arising from the use of this software.
|
||||
|
||||
Permission is granted to anyone to use this software for any purpose,
|
||||
including commercial applications, and to alter it and redistribute it
|
||||
freely, subject to the following restrictions:
|
||||
|
||||
1. The origin of this software must not be misrepresented; you must not
|
||||
claim that you wrote the original software. If you use this software
|
||||
in a product, an acknowledgment in the product documentation would be
|
||||
appreciated but is not required.
|
||||
2. Altered source versions must be plainly marked as such, and must not be
|
||||
misrepresented as being the original software.
|
||||
3. This notice may not be removed or altered from any source distribution.
|
||||
*/
|
||||
#include "SDL_config.h"
|
||||
|
||||
#include "../../video/SDL_blit.h"
|
||||
|
||||
/* This code assumes that r, g, b, a are the source color,
|
||||
* and in the blend and add case, the RGB values are premultiplied by a.
|
||||
*/
|
||||
|
||||
#define DRAW_MUL(_a, _b) (((unsigned)(_a)*(_b))/255)
|
||||
|
||||
#define DRAW_FASTSETPIXEL(type) \
|
||||
*pixel = (type) color
|
||||
|
||||
#define DRAW_FASTSETPIXEL1 DRAW_FASTSETPIXEL(Uint8)
|
||||
#define DRAW_FASTSETPIXEL2 DRAW_FASTSETPIXEL(Uint16)
|
||||
#define DRAW_FASTSETPIXEL4 DRAW_FASTSETPIXEL(Uint32)
|
||||
|
||||
#define DRAW_FASTSETPIXELXY(x, y, type, bpp, color) \
|
||||
*(type *)((Uint8 *)dst->pixels + (y) * dst->pitch \
|
||||
+ (x) * bpp) = (type) color
|
||||
|
||||
#define DRAW_FASTSETPIXELXY1(x, y) DRAW_FASTSETPIXELXY(x, y, Uint8, 1, color)
|
||||
#define DRAW_FASTSETPIXELXY2(x, y) DRAW_FASTSETPIXELXY(x, y, Uint16, 2, color)
|
||||
#define DRAW_FASTSETPIXELXY4(x, y) DRAW_FASTSETPIXELXY(x, y, Uint32, 4, color)
|
||||
|
||||
#define DRAW_SETPIXEL(setpixel) \
|
||||
do { \
|
||||
unsigned sr = r, sg = g, sb = b, sa = a; \
|
||||
setpixel; \
|
||||
} while (0)
|
||||
|
||||
#define DRAW_SETPIXEL_BLEND(getpixel, setpixel) \
|
||||
do { \
|
||||
unsigned sr, sg, sb, sa; sa; \
|
||||
getpixel; \
|
||||
sr = DRAW_MUL(inva, sr) + r; \
|
||||
sg = DRAW_MUL(inva, sg) + g; \
|
||||
sb = DRAW_MUL(inva, sb) + b; \
|
||||
setpixel; \
|
||||
} while (0)
|
||||
|
||||
#define DRAW_SETPIXEL_ADD(getpixel, setpixel) \
|
||||
do { \
|
||||
unsigned sr, sg, sb, sa; sa; \
|
||||
getpixel; \
|
||||
sr += r; if (sr > 0xff) sr = 0xff; \
|
||||
sg += g; if (sg > 0xff) sg = 0xff; \
|
||||
sb += b; if (sb > 0xff) sb = 0xff; \
|
||||
setpixel; \
|
||||
} while (0)
|
||||
|
||||
#define DRAW_SETPIXEL_MOD(getpixel, setpixel) \
|
||||
do { \
|
||||
unsigned sr, sg, sb, sa; sa; \
|
||||
getpixel; \
|
||||
sr = DRAW_MUL(sr, r); \
|
||||
sg = DRAW_MUL(sg, g); \
|
||||
sb = DRAW_MUL(sb, b); \
|
||||
setpixel; \
|
||||
} while (0)
|
||||
|
||||
#define DRAW_SETPIXELXY(x, y, type, bpp, op) \
|
||||
do { \
|
||||
type *pixel = (type *)((Uint8 *)dst->pixels + (y) * dst->pitch \
|
||||
+ (x) * bpp); \
|
||||
op; \
|
||||
} while (0)
|
||||
|
||||
/*
|
||||
* Define draw operators for RGB555
|
||||
*/
|
||||
|
||||
#define DRAW_SETPIXEL_RGB555 \
|
||||
DRAW_SETPIXEL(RGB555_FROM_RGB(*pixel, sr, sg, sb))
|
||||
|
||||
#define DRAW_SETPIXEL_BLEND_RGB555 \
|
||||
DRAW_SETPIXEL_BLEND(RGB_FROM_RGB555(*pixel, sr, sg, sb), \
|
||||
RGB555_FROM_RGB(*pixel, sr, sg, sb))
|
||||
|
||||
#define DRAW_SETPIXEL_ADD_RGB555 \
|
||||
DRAW_SETPIXEL_ADD(RGB_FROM_RGB555(*pixel, sr, sg, sb), \
|
||||
RGB555_FROM_RGB(*pixel, sr, sg, sb))
|
||||
|
||||
#define DRAW_SETPIXEL_MOD_RGB555 \
|
||||
DRAW_SETPIXEL_MOD(RGB_FROM_RGB555(*pixel, sr, sg, sb), \
|
||||
RGB555_FROM_RGB(*pixel, sr, sg, sb))
|
||||
|
||||
#define DRAW_SETPIXELXY_RGB555(x, y) \
|
||||
DRAW_SETPIXELXY(x, y, Uint16, 2, DRAW_SETPIXEL_RGB555)
|
||||
|
||||
#define DRAW_SETPIXELXY_BLEND_RGB555(x, y) \
|
||||
DRAW_SETPIXELXY(x, y, Uint16, 2, DRAW_SETPIXEL_BLEND_RGB555)
|
||||
|
||||
#define DRAW_SETPIXELXY_ADD_RGB555(x, y) \
|
||||
DRAW_SETPIXELXY(x, y, Uint16, 2, DRAW_SETPIXEL_ADD_RGB555)
|
||||
|
||||
#define DRAW_SETPIXELXY_MOD_RGB555(x, y) \
|
||||
DRAW_SETPIXELXY(x, y, Uint16, 2, DRAW_SETPIXEL_MOD_RGB555)
|
||||
|
||||
/*
|
||||
* Define draw operators for RGB565
|
||||
*/
|
||||
|
||||
#define DRAW_SETPIXEL_RGB565 \
|
||||
DRAW_SETPIXEL(RGB565_FROM_RGB(*pixel, sr, sg, sb))
|
||||
|
||||
#define DRAW_SETPIXEL_BLEND_RGB565 \
|
||||
DRAW_SETPIXEL_BLEND(RGB_FROM_RGB565(*pixel, sr, sg, sb), \
|
||||
RGB565_FROM_RGB(*pixel, sr, sg, sb))
|
||||
|
||||
#define DRAW_SETPIXEL_ADD_RGB565 \
|
||||
DRAW_SETPIXEL_ADD(RGB_FROM_RGB565(*pixel, sr, sg, sb), \
|
||||
RGB565_FROM_RGB(*pixel, sr, sg, sb))
|
||||
|
||||
#define DRAW_SETPIXEL_MOD_RGB565 \
|
||||
DRAW_SETPIXEL_MOD(RGB_FROM_RGB565(*pixel, sr, sg, sb), \
|
||||
RGB565_FROM_RGB(*pixel, sr, sg, sb))
|
||||
|
||||
#define DRAW_SETPIXELXY_RGB565(x, y) \
|
||||
DRAW_SETPIXELXY(x, y, Uint16, 2, DRAW_SETPIXEL_RGB565)
|
||||
|
||||
#define DRAW_SETPIXELXY_BLEND_RGB565(x, y) \
|
||||
DRAW_SETPIXELXY(x, y, Uint16, 2, DRAW_SETPIXEL_BLEND_RGB565)
|
||||
|
||||
#define DRAW_SETPIXELXY_ADD_RGB565(x, y) \
|
||||
DRAW_SETPIXELXY(x, y, Uint16, 2, DRAW_SETPIXEL_ADD_RGB565)
|
||||
|
||||
#define DRAW_SETPIXELXY_MOD_RGB565(x, y) \
|
||||
DRAW_SETPIXELXY(x, y, Uint16, 2, DRAW_SETPIXEL_MOD_RGB565)
|
||||
|
||||
/*
|
||||
* Define draw operators for RGB888
|
||||
*/
|
||||
|
||||
#define DRAW_SETPIXEL_RGB888 \
|
||||
DRAW_SETPIXEL(RGB888_FROM_RGB(*pixel, sr, sg, sb))
|
||||
|
||||
#define DRAW_SETPIXEL_BLEND_RGB888 \
|
||||
DRAW_SETPIXEL_BLEND(RGB_FROM_RGB888(*pixel, sr, sg, sb), \
|
||||
RGB888_FROM_RGB(*pixel, sr, sg, sb))
|
||||
|
||||
#define DRAW_SETPIXEL_ADD_RGB888 \
|
||||
DRAW_SETPIXEL_ADD(RGB_FROM_RGB888(*pixel, sr, sg, sb), \
|
||||
RGB888_FROM_RGB(*pixel, sr, sg, sb))
|
||||
|
||||
#define DRAW_SETPIXEL_MOD_RGB888 \
|
||||
DRAW_SETPIXEL_MOD(RGB_FROM_RGB888(*pixel, sr, sg, sb), \
|
||||
RGB888_FROM_RGB(*pixel, sr, sg, sb))
|
||||
|
||||
#define DRAW_SETPIXELXY_RGB888(x, y) \
|
||||
DRAW_SETPIXELXY(x, y, Uint32, 4, DRAW_SETPIXEL_RGB888)
|
||||
|
||||
#define DRAW_SETPIXELXY_BLEND_RGB888(x, y) \
|
||||
DRAW_SETPIXELXY(x, y, Uint32, 4, DRAW_SETPIXEL_BLEND_RGB888)
|
||||
|
||||
#define DRAW_SETPIXELXY_ADD_RGB888(x, y) \
|
||||
DRAW_SETPIXELXY(x, y, Uint32, 4, DRAW_SETPIXEL_ADD_RGB888)
|
||||
|
||||
#define DRAW_SETPIXELXY_MOD_RGB888(x, y) \
|
||||
DRAW_SETPIXELXY(x, y, Uint32, 4, DRAW_SETPIXEL_MOD_RGB888)
|
||||
|
||||
/*
|
||||
* Define draw operators for ARGB8888
|
||||
*/
|
||||
|
||||
#define DRAW_SETPIXEL_ARGB8888 \
|
||||
DRAW_SETPIXEL(ARGB8888_FROM_RGBA(*pixel, sr, sg, sb, sa))
|
||||
|
||||
#define DRAW_SETPIXEL_BLEND_ARGB8888 \
|
||||
DRAW_SETPIXEL_BLEND(RGBA_FROM_ARGB8888(*pixel, sr, sg, sb, sa), \
|
||||
ARGB8888_FROM_RGBA(*pixel, sr, sg, sb, sa))
|
||||
|
||||
#define DRAW_SETPIXEL_ADD_ARGB8888 \
|
||||
DRAW_SETPIXEL_ADD(RGBA_FROM_ARGB8888(*pixel, sr, sg, sb, sa), \
|
||||
ARGB8888_FROM_RGBA(*pixel, sr, sg, sb, sa))
|
||||
|
||||
#define DRAW_SETPIXEL_MOD_ARGB8888 \
|
||||
DRAW_SETPIXEL_MOD(RGBA_FROM_ARGB8888(*pixel, sr, sg, sb, sa), \
|
||||
ARGB8888_FROM_RGBA(*pixel, sr, sg, sb, sa))
|
||||
|
||||
#define DRAW_SETPIXELXY_ARGB8888(x, y) \
|
||||
DRAW_SETPIXELXY(x, y, Uint32, 4, DRAW_SETPIXEL_ARGB8888)
|
||||
|
||||
#define DRAW_SETPIXELXY_BLEND_ARGB8888(x, y) \
|
||||
DRAW_SETPIXELXY(x, y, Uint32, 4, DRAW_SETPIXEL_BLEND_ARGB8888)
|
||||
|
||||
#define DRAW_SETPIXELXY_ADD_ARGB8888(x, y) \
|
||||
DRAW_SETPIXELXY(x, y, Uint32, 4, DRAW_SETPIXEL_ADD_ARGB8888)
|
||||
|
||||
#define DRAW_SETPIXELXY_MOD_ARGB8888(x, y) \
|
||||
DRAW_SETPIXELXY(x, y, Uint32, 4, DRAW_SETPIXEL_MOD_ARGB8888)
|
||||
|
||||
/*
|
||||
* Define draw operators for general RGB
|
||||
*/
|
||||
|
||||
#define DRAW_SETPIXEL_RGB \
|
||||
DRAW_SETPIXEL(PIXEL_FROM_RGB(*pixel, fmt, sr, sg, sb))
|
||||
|
||||
#define DRAW_SETPIXEL_BLEND_RGB \
|
||||
DRAW_SETPIXEL_BLEND(RGB_FROM_PIXEL(*pixel, fmt, sr, sg, sb), \
|
||||
PIXEL_FROM_RGB(*pixel, fmt, sr, sg, sb))
|
||||
|
||||
#define DRAW_SETPIXEL_ADD_RGB \
|
||||
DRAW_SETPIXEL_ADD(RGB_FROM_PIXEL(*pixel, fmt, sr, sg, sb), \
|
||||
PIXEL_FROM_RGB(*pixel, fmt, sr, sg, sb))
|
||||
|
||||
#define DRAW_SETPIXEL_MOD_RGB \
|
||||
DRAW_SETPIXEL_MOD(RGB_FROM_PIXEL(*pixel, fmt, sr, sg, sb), \
|
||||
PIXEL_FROM_RGB(*pixel, fmt, sr, sg, sb))
|
||||
|
||||
#define DRAW_SETPIXELXY2_RGB(x, y) \
|
||||
DRAW_SETPIXELXY(x, y, Uint16, 2, DRAW_SETPIXEL_RGB)
|
||||
|
||||
#define DRAW_SETPIXELXY4_RGB(x, y) \
|
||||
DRAW_SETPIXELXY(x, y, Uint32, 4, DRAW_SETPIXEL_RGB)
|
||||
|
||||
#define DRAW_SETPIXELXY2_BLEND_RGB(x, y) \
|
||||
DRAW_SETPIXELXY(x, y, Uint16, 2, DRAW_SETPIXEL_BLEND_RGB)
|
||||
|
||||
#define DRAW_SETPIXELXY4_BLEND_RGB(x, y) \
|
||||
DRAW_SETPIXELXY(x, y, Uint32, 4, DRAW_SETPIXEL_BLEND_RGB)
|
||||
|
||||
#define DRAW_SETPIXELXY2_ADD_RGB(x, y) \
|
||||
DRAW_SETPIXELXY(x, y, Uint16, 2, DRAW_SETPIXEL_ADD_RGB)
|
||||
|
||||
#define DRAW_SETPIXELXY4_ADD_RGB(x, y) \
|
||||
DRAW_SETPIXELXY(x, y, Uint32, 4, DRAW_SETPIXEL_ADD_RGB)
|
||||
|
||||
#define DRAW_SETPIXELXY2_MOD_RGB(x, y) \
|
||||
DRAW_SETPIXELXY(x, y, Uint16, 2, DRAW_SETPIXEL_MOD_RGB)
|
||||
|
||||
#define DRAW_SETPIXELXY4_MOD_RGB(x, y) \
|
||||
DRAW_SETPIXELXY(x, y, Uint32, 4, DRAW_SETPIXEL_MOD_RGB)
|
||||
|
||||
|
||||
/*
|
||||
* Define draw operators for general RGBA
|
||||
*/
|
||||
|
||||
#define DRAW_SETPIXEL_RGBA \
|
||||
DRAW_SETPIXEL(PIXEL_FROM_RGBA(*pixel, fmt, sr, sg, sb, sa))
|
||||
|
||||
#define DRAW_SETPIXEL_BLEND_RGBA \
|
||||
DRAW_SETPIXEL_BLEND(RGBA_FROM_PIXEL(*pixel, fmt, sr, sg, sb, sa), \
|
||||
PIXEL_FROM_RGBA(*pixel, fmt, sr, sg, sb, sa))
|
||||
|
||||
#define DRAW_SETPIXEL_ADD_RGBA \
|
||||
DRAW_SETPIXEL_ADD(RGBA_FROM_PIXEL(*pixel, fmt, sr, sg, sb, sa), \
|
||||
PIXEL_FROM_RGBA(*pixel, fmt, sr, sg, sb, sa))
|
||||
|
||||
#define DRAW_SETPIXEL_MOD_RGBA \
|
||||
DRAW_SETPIXEL_MOD(RGBA_FROM_PIXEL(*pixel, fmt, sr, sg, sb, sa), \
|
||||
PIXEL_FROM_RGBA(*pixel, fmt, sr, sg, sb, sa))
|
||||
|
||||
#define DRAW_SETPIXELXY4_RGBA(x, y) \
|
||||
DRAW_SETPIXELXY(x, y, Uint32, 4, DRAW_SETPIXEL_RGBA)
|
||||
|
||||
#define DRAW_SETPIXELXY4_BLEND_RGBA(x, y) \
|
||||
DRAW_SETPIXELXY(x, y, Uint32, 4, DRAW_SETPIXEL_BLEND_RGBA)
|
||||
|
||||
#define DRAW_SETPIXELXY4_ADD_RGBA(x, y) \
|
||||
DRAW_SETPIXELXY(x, y, Uint32, 4, DRAW_SETPIXEL_ADD_RGBA)
|
||||
|
||||
#define DRAW_SETPIXELXY4_MOD_RGBA(x, y) \
|
||||
DRAW_SETPIXELXY(x, y, Uint32, 4, DRAW_SETPIXEL_MOD_RGBA)
|
||||
|
||||
/*
|
||||
* Define line drawing macro
|
||||
*/
|
||||
|
||||
#define ABS(_x) ((_x) < 0 ? -(_x) : (_x))
|
||||
|
||||
/* Horizontal line */
|
||||
#define HLINE(type, op, draw_end) \
|
||||
{ \
|
||||
int length; \
|
||||
int pitch = (dst->pitch / dst->format->BytesPerPixel); \
|
||||
type *pixel; \
|
||||
if (x1 <= x2) { \
|
||||
pixel = (type *)dst->pixels + y1 * pitch + x1; \
|
||||
length = draw_end ? (x2-x1+1) : (x2-x1); \
|
||||
} else { \
|
||||
pixel = (type *)dst->pixels + y1 * pitch + x2; \
|
||||
if (!draw_end) { \
|
||||
++pixel; \
|
||||
} \
|
||||
length = draw_end ? (x1-x2+1) : (x1-x2); \
|
||||
} \
|
||||
while (length--) { \
|
||||
op; \
|
||||
++pixel; \
|
||||
} \
|
||||
}
|
||||
|
||||
/* Vertical line */
|
||||
#define VLINE(type, op, draw_end) \
|
||||
{ \
|
||||
int length; \
|
||||
int pitch = (dst->pitch / dst->format->BytesPerPixel); \
|
||||
type *pixel; \
|
||||
if (y1 <= y2) { \
|
||||
pixel = (type *)dst->pixels + y1 * pitch + x1; \
|
||||
length = draw_end ? (y2-y1+1) : (y2-y1); \
|
||||
} else { \
|
||||
pixel = (type *)dst->pixels + y2 * pitch + x1; \
|
||||
if (!draw_end) { \
|
||||
pixel += pitch; \
|
||||
} \
|
||||
length = draw_end ? (y1-y2+1) : (y1-y2); \
|
||||
} \
|
||||
while (length--) { \
|
||||
op; \
|
||||
pixel += pitch; \
|
||||
} \
|
||||
}
|
||||
|
||||
/* Diagonal line */
|
||||
#define DLINE(type, op, draw_end) \
|
||||
{ \
|
||||
int length; \
|
||||
int pitch = (dst->pitch / dst->format->BytesPerPixel); \
|
||||
type *pixel; \
|
||||
if (y1 <= y2) { \
|
||||
pixel = (type *)dst->pixels + y1 * pitch + x1; \
|
||||
if (x1 <= x2) { \
|
||||
++pitch; \
|
||||
} else { \
|
||||
--pitch; \
|
||||
} \
|
||||
length = (y2-y1); \
|
||||
} else { \
|
||||
pixel = (type *)dst->pixels + y2 * pitch + x2; \
|
||||
if (x2 <= x1) { \
|
||||
++pitch; \
|
||||
} else { \
|
||||
--pitch; \
|
||||
} \
|
||||
if (!draw_end) { \
|
||||
pixel += pitch; \
|
||||
} \
|
||||
length = (y1-y2); \
|
||||
} \
|
||||
if (draw_end) { \
|
||||
++length; \
|
||||
} \
|
||||
while (length--) { \
|
||||
op; \
|
||||
pixel += pitch; \
|
||||
} \
|
||||
}
|
||||
|
||||
/* Bresenham's line algorithm */
|
||||
#define BLINE(x1, y1, x2, y2, op, draw_end) \
|
||||
{ \
|
||||
int i, deltax, deltay, numpixels; \
|
||||
int d, dinc1, dinc2; \
|
||||
int x, xinc1, xinc2; \
|
||||
int y, yinc1, yinc2; \
|
||||
\
|
||||
deltax = ABS(x2 - x1); \
|
||||
deltay = ABS(y2 - y1); \
|
||||
\
|
||||
if (deltax >= deltay) { \
|
||||
numpixels = deltax + 1; \
|
||||
d = (2 * deltay) - deltax; \
|
||||
dinc1 = deltay * 2; \
|
||||
dinc2 = (deltay - deltax) * 2; \
|
||||
xinc1 = 1; \
|
||||
xinc2 = 1; \
|
||||
yinc1 = 0; \
|
||||
yinc2 = 1; \
|
||||
} else { \
|
||||
numpixels = deltay + 1; \
|
||||
d = (2 * deltax) - deltay; \
|
||||
dinc1 = deltax * 2; \
|
||||
dinc2 = (deltax - deltay) * 2; \
|
||||
xinc1 = 0; \
|
||||
xinc2 = 1; \
|
||||
yinc1 = 1; \
|
||||
yinc2 = 1; \
|
||||
} \
|
||||
\
|
||||
if (x1 > x2) { \
|
||||
xinc1 = -xinc1; \
|
||||
xinc2 = -xinc2; \
|
||||
} \
|
||||
if (y1 > y2) { \
|
||||
yinc1 = -yinc1; \
|
||||
yinc2 = -yinc2; \
|
||||
} \
|
||||
\
|
||||
x = x1; \
|
||||
y = y1; \
|
||||
\
|
||||
if (!draw_end) { \
|
||||
--numpixels; \
|
||||
} \
|
||||
for (i = 0; i < numpixels; ++i) { \
|
||||
op(x, y); \
|
||||
if (d < 0) { \
|
||||
d += dinc1; \
|
||||
x += xinc1; \
|
||||
y += yinc1; \
|
||||
} else { \
|
||||
d += dinc2; \
|
||||
x += xinc2; \
|
||||
y += yinc2; \
|
||||
} \
|
||||
} \
|
||||
}
|
||||
|
||||
/* Xiaolin Wu's line algorithm, based on Michael Abrash's implementation */
|
||||
#define WULINE(x1, y1, x2, y2, opaque_op, blend_op, draw_end) \
|
||||
{ \
|
||||
Uint16 ErrorAdj, ErrorAcc; \
|
||||
Uint16 ErrorAccTemp, Weighting; \
|
||||
int DeltaX, DeltaY, Temp, XDir; \
|
||||
unsigned r, g, b, a, inva; \
|
||||
\
|
||||
/* Draw the initial pixel, which is always exactly intersected by \
|
||||
the line and so needs no weighting */ \
|
||||
opaque_op(x1, y1); \
|
||||
\
|
||||
/* Draw the final pixel, which is always exactly intersected by the line \
|
||||
and so needs no weighting */ \
|
||||
if (draw_end) { \
|
||||
opaque_op(x2, y2); \
|
||||
} \
|
||||
\
|
||||
/* Make sure the line runs top to bottom */ \
|
||||
if (y1 > y2) { \
|
||||
Temp = y1; y1 = y2; y2 = Temp; \
|
||||
Temp = x1; x1 = x2; x2 = Temp; \
|
||||
} \
|
||||
DeltaY = y2 - y1; \
|
||||
\
|
||||
if ((DeltaX = x2 - x1) >= 0) { \
|
||||
XDir = 1; \
|
||||
} else { \
|
||||
XDir = -1; \
|
||||
DeltaX = -DeltaX; /* make DeltaX positive */ \
|
||||
} \
|
||||
\
|
||||
/* line is not horizontal, diagonal, or vertical */ \
|
||||
ErrorAcc = 0; /* initialize the line error accumulator to 0 */ \
|
||||
\
|
||||
/* Is this an X-major or Y-major line? */ \
|
||||
if (DeltaY > DeltaX) { \
|
||||
/* Y-major line; calculate 16-bit fixed-point fractional part of a \
|
||||
pixel that X advances each time Y advances 1 pixel, truncating the \
|
||||
result so that we won't overrun the endpoint along the X axis */ \
|
||||
ErrorAdj = ((unsigned long) DeltaX << 16) / (unsigned long) DeltaY; \
|
||||
/* Draw all pixels other than the first and last */ \
|
||||
while (--DeltaY) { \
|
||||
ErrorAccTemp = ErrorAcc; /* remember currrent accumulated error */ \
|
||||
ErrorAcc += ErrorAdj; /* calculate error for next pixel */ \
|
||||
if (ErrorAcc <= ErrorAccTemp) { \
|
||||
/* The error accumulator turned over, so advance the X coord */ \
|
||||
x1 += XDir; \
|
||||
} \
|
||||
y1++; /* Y-major, so always advance Y */ \
|
||||
/* The IntensityBits most significant bits of ErrorAcc give us the \
|
||||
intensity weighting for this pixel, and the complement of the \
|
||||
weighting for the paired pixel */ \
|
||||
Weighting = ErrorAcc >> 8; \
|
||||
{ \
|
||||
a = DRAW_MUL(_a, (Weighting ^ 255)); \
|
||||
r = DRAW_MUL(_r, a); \
|
||||
g = DRAW_MUL(_g, a); \
|
||||
b = DRAW_MUL(_b, a); \
|
||||
inva = (a ^ 0xFF); \
|
||||
blend_op(x1, y1); \
|
||||
} \
|
||||
{ \
|
||||
a = DRAW_MUL(_a, Weighting); \
|
||||
r = DRAW_MUL(_r, a); \
|
||||
g = DRAW_MUL(_g, a); \
|
||||
b = DRAW_MUL(_b, a); \
|
||||
inva = (a ^ 0xFF); \
|
||||
blend_op(x1 + XDir, y1); \
|
||||
} \
|
||||
} \
|
||||
} else { \
|
||||
/* X-major line; calculate 16-bit fixed-point fractional part of a \
|
||||
pixel that Y advances each time X advances 1 pixel, truncating the \
|
||||
result to avoid overrunning the endpoint along the X axis */ \
|
||||
ErrorAdj = ((unsigned long) DeltaY << 16) / (unsigned long) DeltaX; \
|
||||
/* Draw all pixels other than the first and last */ \
|
||||
while (--DeltaX) { \
|
||||
ErrorAccTemp = ErrorAcc; /* remember currrent accumulated error */ \
|
||||
ErrorAcc += ErrorAdj; /* calculate error for next pixel */ \
|
||||
if (ErrorAcc <= ErrorAccTemp) { \
|
||||
/* The error accumulator turned over, so advance the Y coord */ \
|
||||
y1++; \
|
||||
} \
|
||||
x1 += XDir; /* X-major, so always advance X */ \
|
||||
/* The IntensityBits most significant bits of ErrorAcc give us the \
|
||||
intensity weighting for this pixel, and the complement of the \
|
||||
weighting for the paired pixel */ \
|
||||
Weighting = ErrorAcc >> 8; \
|
||||
{ \
|
||||
a = DRAW_MUL(_a, (Weighting ^ 255)); \
|
||||
r = DRAW_MUL(_r, a); \
|
||||
g = DRAW_MUL(_g, a); \
|
||||
b = DRAW_MUL(_b, a); \
|
||||
inva = (a ^ 0xFF); \
|
||||
blend_op(x1, y1); \
|
||||
} \
|
||||
{ \
|
||||
a = DRAW_MUL(_a, Weighting); \
|
||||
r = DRAW_MUL(_r, a); \
|
||||
g = DRAW_MUL(_g, a); \
|
||||
b = DRAW_MUL(_b, a); \
|
||||
inva = (a ^ 0xFF); \
|
||||
blend_op(x1, y1 + 1); \
|
||||
} \
|
||||
} \
|
||||
} \
|
||||
}
|
||||
|
||||
#ifdef AA_LINES
|
||||
#define AALINE(x1, y1, x2, y2, opaque_op, blend_op, draw_end) \
|
||||
WULINE(x1, y1, x2, y2, opaque_op, blend_op, draw_end)
|
||||
#else
|
||||
#define AALINE(x1, y1, x2, y2, opaque_op, blend_op, draw_end) \
|
||||
BLINE(x1, y1, x2, y2, opaque_op, draw_end)
|
||||
#endif
|
||||
|
||||
/*
|
||||
* Define fill rect macro
|
||||
*/
|
||||
|
||||
#define FILLRECT(type, op) \
|
||||
do { \
|
||||
int width = rect->w; \
|
||||
int height = rect->h; \
|
||||
int pitch = (dst->pitch / dst->format->BytesPerPixel); \
|
||||
int skip = pitch - width; \
|
||||
type *pixel = (type *)dst->pixels + rect->y * pitch + rect->x; \
|
||||
while (height--) { \
|
||||
{ int n = (width+3)/4; \
|
||||
switch (width & 3) { \
|
||||
case 0: do { op; pixel++; \
|
||||
case 3: op; pixel++; \
|
||||
case 2: op; pixel++; \
|
||||
case 1: op; pixel++; \
|
||||
} while ( --n > 0 ); \
|
||||
} \
|
||||
} \
|
||||
pixel += skip; \
|
||||
} \
|
||||
} while (0)
|
||||
|
||||
/* vi: set ts=4 sw=4 expandtab: */
|
||||
@@ -0,0 +1,214 @@
|
||||
/*
|
||||
Simple DirectMedia Layer
|
||||
Copyright (C) 1997-2011 Sam Lantinga <slouken@libsdl.org>
|
||||
|
||||
This software is provided 'as-is', without any express or implied
|
||||
warranty. In no event will the authors be held liable for any damages
|
||||
arising from the use of this software.
|
||||
|
||||
Permission is granted to anyone to use this software for any purpose,
|
||||
including commercial applications, and to alter it and redistribute it
|
||||
freely, subject to the following restrictions:
|
||||
|
||||
1. The origin of this software must not be misrepresented; you must not
|
||||
claim that you wrote the original software. If you use this software
|
||||
in a product, an acknowledgment in the product documentation would be
|
||||
appreciated but is not required.
|
||||
2. Altered source versions must be plainly marked as such, and must not be
|
||||
misrepresented as being the original software.
|
||||
3. This notice may not be removed or altered from any source distribution.
|
||||
*/
|
||||
#include "SDL_config.h"
|
||||
|
||||
#if !SDL_RENDER_DISABLED
|
||||
|
||||
#include "SDL_draw.h"
|
||||
#include "SDL_drawline.h"
|
||||
#include "SDL_drawpoint.h"
|
||||
|
||||
|
||||
static void
|
||||
SDL_DrawLine1(SDL_Surface * dst, int x1, int y1, int x2, int y2, Uint32 color,
|
||||
SDL_bool draw_end)
|
||||
{
|
||||
if (y1 == y2) {
|
||||
//HLINE(Uint8, DRAW_FASTSETPIXEL1, draw_end);
|
||||
int length;
|
||||
int pitch = (dst->pitch / dst->format->BytesPerPixel);
|
||||
Uint8 *pixel;
|
||||
if (x1 <= x2) {
|
||||
pixel = (Uint8 *)dst->pixels + y1 * pitch + x1;
|
||||
length = draw_end ? (x2-x1+1) : (x2-x1);
|
||||
} else {
|
||||
pixel = (Uint8 *)dst->pixels + y1 * pitch + x2;
|
||||
if (!draw_end) {
|
||||
++pixel;
|
||||
}
|
||||
length = draw_end ? (x1-x2+1) : (x1-x2);
|
||||
}
|
||||
SDL_memset(pixel, color, length);
|
||||
} else if (x1 == x2) {
|
||||
VLINE(Uint8, DRAW_FASTSETPIXEL1, draw_end);
|
||||
} else if (ABS(x1 - x2) == ABS(y1 - y2)) {
|
||||
DLINE(Uint8, DRAW_FASTSETPIXEL1, draw_end);
|
||||
} else {
|
||||
BLINE(x1, y1, x2, y2, DRAW_FASTSETPIXELXY1, draw_end);
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
SDL_DrawLine2(SDL_Surface * dst, int x1, int y1, int x2, int y2, Uint32 color,
|
||||
SDL_bool draw_end)
|
||||
{
|
||||
if (y1 == y2) {
|
||||
HLINE(Uint16, DRAW_FASTSETPIXEL2, draw_end);
|
||||
} else if (x1 == x2) {
|
||||
VLINE(Uint16, DRAW_FASTSETPIXEL2, draw_end);
|
||||
} else if (ABS(x1 - x2) == ABS(y1 - y2)) {
|
||||
DLINE(Uint16, DRAW_FASTSETPIXEL2, draw_end);
|
||||
} else {
|
||||
Uint8 _r, _g, _b, _a;
|
||||
const SDL_PixelFormat * fmt = dst->format;
|
||||
SDL_GetRGBA(color, fmt, &_r, &_g, &_b, &_a);
|
||||
if (fmt->Rmask == 0x7C00) {
|
||||
AALINE(x1, y1, x2, y2,
|
||||
DRAW_FASTSETPIXELXY2, DRAW_SETPIXELXY_BLEND_RGB555,
|
||||
draw_end);
|
||||
} else if (fmt->Rmask == 0xF800) {
|
||||
AALINE(x1, y1, x2, y2,
|
||||
DRAW_FASTSETPIXELXY2, DRAW_SETPIXELXY_BLEND_RGB565,
|
||||
draw_end);
|
||||
} else {
|
||||
AALINE(x1, y1, x2, y2,
|
||||
DRAW_FASTSETPIXELXY2, DRAW_SETPIXELXY2_BLEND_RGB,
|
||||
draw_end);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
SDL_DrawLine4(SDL_Surface * dst, int x1, int y1, int x2, int y2, Uint32 color,
|
||||
SDL_bool draw_end)
|
||||
{
|
||||
if (y1 == y2) {
|
||||
HLINE(Uint32, DRAW_FASTSETPIXEL4, draw_end);
|
||||
} else if (x1 == x2) {
|
||||
VLINE(Uint32, DRAW_FASTSETPIXEL4, draw_end);
|
||||
} else if (ABS(x1 - x2) == ABS(y1 - y2)) {
|
||||
DLINE(Uint32, DRAW_FASTSETPIXEL4, draw_end);
|
||||
} else {
|
||||
Uint8 _r, _g, _b, _a;
|
||||
const SDL_PixelFormat * fmt = dst->format;
|
||||
SDL_GetRGBA(color, fmt, &_r, &_g, &_b, &_a);
|
||||
if (fmt->Rmask == 0x00FF0000) {
|
||||
if (!fmt->Amask) {
|
||||
AALINE(x1, y1, x2, y2,
|
||||
DRAW_FASTSETPIXELXY4, DRAW_SETPIXELXY_BLEND_RGB888,
|
||||
draw_end);
|
||||
} else {
|
||||
AALINE(x1, y1, x2, y2,
|
||||
DRAW_FASTSETPIXELXY4, DRAW_SETPIXELXY_BLEND_ARGB8888,
|
||||
draw_end);
|
||||
}
|
||||
} else {
|
||||
AALINE(x1, y1, x2, y2,
|
||||
DRAW_FASTSETPIXELXY4, DRAW_SETPIXELXY4_BLEND_RGB,
|
||||
draw_end);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
typedef void (*DrawLineFunc) (SDL_Surface * dst,
|
||||
int x1, int y1, int x2, int y2,
|
||||
Uint32 color, SDL_bool draw_end);
|
||||
|
||||
static DrawLineFunc
|
||||
SDL_CalculateDrawLineFunc(const SDL_PixelFormat * fmt)
|
||||
{
|
||||
switch (fmt->BytesPerPixel) {
|
||||
case 1:
|
||||
if (fmt->BitsPerPixel < 8) {
|
||||
break;
|
||||
}
|
||||
return SDL_DrawLine1;
|
||||
case 2:
|
||||
return SDL_DrawLine2;
|
||||
case 4:
|
||||
return SDL_DrawLine4;
|
||||
}
|
||||
return NULL;
|
||||
}
|
||||
|
||||
int
|
||||
SDL_DrawLine(SDL_Surface * dst, int x1, int y1, int x2, int y2, Uint32 color)
|
||||
{
|
||||
DrawLineFunc func;
|
||||
|
||||
if (!dst) {
|
||||
SDL_SetError("SDL_DrawLine(): Passed NULL destination surface");
|
||||
return -1;
|
||||
}
|
||||
|
||||
func = SDL_CalculateDrawLineFunc(dst->format);
|
||||
if (!func) {
|
||||
SDL_SetError("SDL_DrawLine(): Unsupported surface format");
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* Perform clipping */
|
||||
/* FIXME: We don't actually want to clip, as it may change line slope */
|
||||
if (!SDL_IntersectRectAndLine(&dst->clip_rect, &x1, &y1, &x2, &y2)) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
func(dst, x1, y1, x2, y2, color, SDL_TRUE);
|
||||
return 0;
|
||||
}
|
||||
|
||||
int
|
||||
SDL_DrawLines(SDL_Surface * dst, const SDL_Point * points, int count,
|
||||
Uint32 color)
|
||||
{
|
||||
int i;
|
||||
int x1, y1;
|
||||
int x2, y2;
|
||||
SDL_bool draw_end;
|
||||
DrawLineFunc func;
|
||||
|
||||
if (!dst) {
|
||||
SDL_SetError("SDL_DrawLines(): Passed NULL destination surface");
|
||||
return -1;
|
||||
}
|
||||
|
||||
func = SDL_CalculateDrawLineFunc(dst->format);
|
||||
if (!func) {
|
||||
SDL_SetError("SDL_DrawLines(): Unsupported surface format");
|
||||
return -1;
|
||||
}
|
||||
|
||||
for (i = 1; i < count; ++i) {
|
||||
x1 = points[i-1].x;
|
||||
y1 = points[i-1].y;
|
||||
x2 = points[i].x;
|
||||
y2 = points[i].y;
|
||||
|
||||
/* Perform clipping */
|
||||
/* FIXME: We don't actually want to clip, as it may change line slope */
|
||||
if (!SDL_IntersectRectAndLine(&dst->clip_rect, &x1, &y1, &x2, &y2)) {
|
||||
continue;
|
||||
}
|
||||
|
||||
/* Draw the end if it was clipped */
|
||||
draw_end = (x2 != points[i].x || y2 != points[i].y);
|
||||
|
||||
func(dst, x1, y1, x2, y2, color, draw_end);
|
||||
}
|
||||
if (points[0].x != points[count-1].x || points[0].y != points[count-1].y) {
|
||||
SDL_DrawPoint(dst, points[count-1].x, points[count-1].y, color);
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
#endif /* !SDL_RENDER_DISABLED */
|
||||
|
||||
/* vi: set ts=4 sw=4 expandtab: */
|
||||
@@ -0,0 +1,27 @@
|
||||
/*
|
||||
Simple DirectMedia Layer
|
||||
Copyright (C) 1997-2011 Sam Lantinga <slouken@libsdl.org>
|
||||
|
||||
This software is provided 'as-is', without any express or implied
|
||||
warranty. In no event will the authors be held liable for any damages
|
||||
arising from the use of this software.
|
||||
|
||||
Permission is granted to anyone to use this software for any purpose,
|
||||
including commercial applications, and to alter it and redistribute it
|
||||
freely, subject to the following restrictions:
|
||||
|
||||
1. The origin of this software must not be misrepresented; you must not
|
||||
claim that you wrote the original software. If you use this software
|
||||
in a product, an acknowledgment in the product documentation would be
|
||||
appreciated but is not required.
|
||||
2. Altered source versions must be plainly marked as such, and must not be
|
||||
misrepresented as being the original software.
|
||||
3. This notice may not be removed or altered from any source distribution.
|
||||
*/
|
||||
#include "SDL_config.h"
|
||||
|
||||
|
||||
extern int SDL_DrawLine(SDL_Surface * dst, int x1, int y1, int x2, int y2, Uint32 color);
|
||||
extern int SDL_DrawLines(SDL_Surface * dst, const SDL_Point * points, int count, Uint32 color);
|
||||
|
||||
/* vi: set ts=4 sw=4 expandtab: */
|
||||
@@ -0,0 +1,120 @@
|
||||
/*
|
||||
Simple DirectMedia Layer
|
||||
Copyright (C) 1997-2011 Sam Lantinga <slouken@libsdl.org>
|
||||
|
||||
This software is provided 'as-is', without any express or implied
|
||||
warranty. In no event will the authors be held liable for any damages
|
||||
arising from the use of this software.
|
||||
|
||||
Permission is granted to anyone to use this software for any purpose,
|
||||
including commercial applications, and to alter it and redistribute it
|
||||
freely, subject to the following restrictions:
|
||||
|
||||
1. The origin of this software must not be misrepresented; you must not
|
||||
claim that you wrote the original software. If you use this software
|
||||
in a product, an acknowledgment in the product documentation would be
|
||||
appreciated but is not required.
|
||||
2. Altered source versions must be plainly marked as such, and must not be
|
||||
misrepresented as being the original software.
|
||||
3. This notice may not be removed or altered from any source distribution.
|
||||
*/
|
||||
#include "SDL_config.h"
|
||||
|
||||
#if !SDL_RENDER_DISABLED
|
||||
|
||||
#include "SDL_draw.h"
|
||||
#include "SDL_drawpoint.h"
|
||||
|
||||
|
||||
int
|
||||
SDL_DrawPoint(SDL_Surface * dst, int x, int y, Uint32 color)
|
||||
{
|
||||
if (!dst) {
|
||||
SDL_SetError("Passed NULL destination surface");
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* This function doesn't work on surfaces < 8 bpp */
|
||||
if (dst->format->BitsPerPixel < 8) {
|
||||
SDL_SetError("SDL_DrawPoint(): Unsupported surface format");
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* Perform clipping */
|
||||
if (x < dst->clip_rect.x || y < dst->clip_rect.y ||
|
||||
x >= (dst->clip_rect.x + dst->clip_rect.w) ||
|
||||
y >= (dst->clip_rect.y + dst->clip_rect.h)) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
switch (dst->format->BytesPerPixel) {
|
||||
case 1:
|
||||
DRAW_FASTSETPIXELXY1(x, y);
|
||||
break;
|
||||
case 2:
|
||||
DRAW_FASTSETPIXELXY2(x, y);
|
||||
break;
|
||||
case 3:
|
||||
SDL_Unsupported();
|
||||
return -1;
|
||||
case 4:
|
||||
DRAW_FASTSETPIXELXY4(x, y);
|
||||
break;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
int
|
||||
SDL_DrawPoints(SDL_Surface * dst, const SDL_Point * points, int count,
|
||||
Uint32 color)
|
||||
{
|
||||
int minx, miny;
|
||||
int maxx, maxy;
|
||||
int i;
|
||||
int x, y;
|
||||
|
||||
if (!dst) {
|
||||
SDL_SetError("Passed NULL destination surface");
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* This function doesn't work on surfaces < 8 bpp */
|
||||
if (dst->format->BitsPerPixel < 8) {
|
||||
SDL_SetError("SDL_DrawPoints(): Unsupported surface format");
|
||||
return -1;
|
||||
}
|
||||
|
||||
minx = dst->clip_rect.x;
|
||||
maxx = dst->clip_rect.x + dst->clip_rect.w - 1;
|
||||
miny = dst->clip_rect.y;
|
||||
maxy = dst->clip_rect.y + dst->clip_rect.h - 1;
|
||||
|
||||
for (i = 0; i < count; ++i) {
|
||||
x = points[i].x;
|
||||
y = points[i].y;
|
||||
|
||||
if (x < minx || x > maxx || y < miny || y > maxy) {
|
||||
continue;
|
||||
}
|
||||
|
||||
switch (dst->format->BytesPerPixel) {
|
||||
case 1:
|
||||
DRAW_FASTSETPIXELXY1(x, y);
|
||||
break;
|
||||
case 2:
|
||||
DRAW_FASTSETPIXELXY2(x, y);
|
||||
break;
|
||||
case 3:
|
||||
SDL_Unsupported();
|
||||
return -1;
|
||||
case 4:
|
||||
DRAW_FASTSETPIXELXY4(x, y);
|
||||
break;
|
||||
}
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
#endif /* !SDL_RENDER_DISABLED */
|
||||
|
||||
/* vi: set ts=4 sw=4 expandtab: */
|
||||
@@ -0,0 +1,27 @@
|
||||
/*
|
||||
Simple DirectMedia Layer
|
||||
Copyright (C) 1997-2011 Sam Lantinga <slouken@libsdl.org>
|
||||
|
||||
This software is provided 'as-is', without any express or implied
|
||||
warranty. In no event will the authors be held liable for any damages
|
||||
arising from the use of this software.
|
||||
|
||||
Permission is granted to anyone to use this software for any purpose,
|
||||
including commercial applications, and to alter it and redistribute it
|
||||
freely, subject to the following restrictions:
|
||||
|
||||
1. The origin of this software must not be misrepresented; you must not
|
||||
claim that you wrote the original software. If you use this software
|
||||
in a product, an acknowledgment in the product documentation would be
|
||||
appreciated but is not required.
|
||||
2. Altered source versions must be plainly marked as such, and must not be
|
||||
misrepresented as being the original software.
|
||||
3. This notice may not be removed or altered from any source distribution.
|
||||
*/
|
||||
#include "SDL_config.h"
|
||||
|
||||
|
||||
extern int SDL_DrawPoint(SDL_Surface * dst, int x, int y, Uint32 color);
|
||||
extern int SDL_DrawPoints(SDL_Surface * dst, const SDL_Point * points, int count, Uint32 color);
|
||||
|
||||
/* vi: set ts=4 sw=4 expandtab: */
|
||||
@@ -0,0 +1,541 @@
|
||||
/*
|
||||
Simple DirectMedia Layer
|
||||
Copyright (C) 1997-2011 Sam Lantinga <slouken@libsdl.org>
|
||||
|
||||
This software is provided 'as-is', without any express or implied
|
||||
warranty. In no event will the authors be held liable for any damages
|
||||
arising from the use of this software.
|
||||
|
||||
Permission is granted to anyone to use this software for any purpose,
|
||||
including commercial applications, and to alter it and redistribute it
|
||||
freely, subject to the following restrictions:
|
||||
|
||||
1. The origin of this software must not be misrepresented; you must not
|
||||
claim that you wrote the original software. If you use this software
|
||||
in a product, an acknowledgment in the product documentation would be
|
||||
appreciated but is not required.
|
||||
2. Altered source versions must be plainly marked as such, and must not be
|
||||
misrepresented as being the original software.
|
||||
3. This notice may not be removed or altered from any source distribution.
|
||||
*/
|
||||
#include "SDL_config.h"
|
||||
|
||||
#if !SDL_RENDER_DISABLED
|
||||
|
||||
#include "../SDL_sysrender.h"
|
||||
|
||||
#include "SDL_draw.h"
|
||||
#include "SDL_blendfillrect.h"
|
||||
#include "SDL_blendline.h"
|
||||
#include "SDL_blendpoint.h"
|
||||
#include "SDL_drawline.h"
|
||||
#include "SDL_drawpoint.h"
|
||||
|
||||
|
||||
/* SDL surface based renderer implementation */
|
||||
|
||||
static SDL_Renderer *SW_CreateRenderer(SDL_Window * window, Uint32 flags);
|
||||
static void SW_WindowEvent(SDL_Renderer * renderer,
|
||||
const SDL_WindowEvent *event);
|
||||
static int SW_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture);
|
||||
static int SW_SetTextureColorMod(SDL_Renderer * renderer,
|
||||
SDL_Texture * texture);
|
||||
static int SW_SetTextureAlphaMod(SDL_Renderer * renderer,
|
||||
SDL_Texture * texture);
|
||||
static int SW_SetTextureBlendMode(SDL_Renderer * renderer,
|
||||
SDL_Texture * texture);
|
||||
static int SW_UpdateTexture(SDL_Renderer * renderer, SDL_Texture * texture,
|
||||
const SDL_Rect * rect, const void *pixels,
|
||||
int pitch);
|
||||
static int SW_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture,
|
||||
const SDL_Rect * rect, void **pixels, int *pitch);
|
||||
static void SW_UnlockTexture(SDL_Renderer * renderer, SDL_Texture * texture);
|
||||
static int SW_UpdateViewport(SDL_Renderer * renderer);
|
||||
static int SW_RenderClear(SDL_Renderer * renderer);
|
||||
static int SW_RenderDrawPoints(SDL_Renderer * renderer,
|
||||
const SDL_Point * points, int count);
|
||||
static int SW_RenderDrawLines(SDL_Renderer * renderer,
|
||||
const SDL_Point * points, int count);
|
||||
static int SW_RenderFillRects(SDL_Renderer * renderer,
|
||||
const SDL_Rect * rects, int count);
|
||||
static int SW_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture,
|
||||
const SDL_Rect * srcrect, const SDL_Rect * dstrect);
|
||||
static int SW_RenderReadPixels(SDL_Renderer * renderer, const SDL_Rect * rect,
|
||||
Uint32 format, void * pixels, int pitch);
|
||||
static void SW_RenderPresent(SDL_Renderer * renderer);
|
||||
static void SW_DestroyTexture(SDL_Renderer * renderer, SDL_Texture * texture);
|
||||
static void SW_DestroyRenderer(SDL_Renderer * renderer);
|
||||
|
||||
|
||||
SDL_RenderDriver SW_RenderDriver = {
|
||||
SW_CreateRenderer,
|
||||
{
|
||||
"software",
|
||||
SDL_RENDERER_SOFTWARE,
|
||||
8,
|
||||
{
|
||||
SDL_PIXELFORMAT_RGB555,
|
||||
SDL_PIXELFORMAT_RGB565,
|
||||
SDL_PIXELFORMAT_RGB888,
|
||||
SDL_PIXELFORMAT_BGR888,
|
||||
SDL_PIXELFORMAT_ARGB8888,
|
||||
SDL_PIXELFORMAT_RGBA8888,
|
||||
SDL_PIXELFORMAT_ABGR8888,
|
||||
SDL_PIXELFORMAT_BGRA8888
|
||||
},
|
||||
0,
|
||||
0}
|
||||
};
|
||||
|
||||
typedef struct
|
||||
{
|
||||
SDL_Surface *surface;
|
||||
} SW_RenderData;
|
||||
|
||||
|
||||
static SDL_Surface *
|
||||
SW_ActivateRenderer(SDL_Renderer * renderer)
|
||||
{
|
||||
SW_RenderData *data = (SW_RenderData *) renderer->driverdata;
|
||||
|
||||
if (!data->surface) {
|
||||
data->surface = SDL_GetWindowSurface(renderer->window);
|
||||
|
||||
SW_UpdateViewport(renderer);
|
||||
}
|
||||
return data->surface;
|
||||
}
|
||||
|
||||
SDL_Renderer *
|
||||
SW_CreateRendererForSurface(SDL_Surface * surface)
|
||||
{
|
||||
SDL_Renderer *renderer;
|
||||
SW_RenderData *data;
|
||||
|
||||
if (!surface) {
|
||||
SDL_SetError("Can't create renderer for NULL surface");
|
||||
return NULL;
|
||||
}
|
||||
|
||||
renderer = (SDL_Renderer *) SDL_calloc(1, sizeof(*renderer));
|
||||
if (!renderer) {
|
||||
SDL_OutOfMemory();
|
||||
return NULL;
|
||||
}
|
||||
|
||||
data = (SW_RenderData *) SDL_calloc(1, sizeof(*data));
|
||||
if (!data) {
|
||||
SW_DestroyRenderer(renderer);
|
||||
SDL_OutOfMemory();
|
||||
return NULL;
|
||||
}
|
||||
data->surface = surface;
|
||||
|
||||
renderer->WindowEvent = SW_WindowEvent;
|
||||
renderer->CreateTexture = SW_CreateTexture;
|
||||
renderer->SetTextureColorMod = SW_SetTextureColorMod;
|
||||
renderer->SetTextureAlphaMod = SW_SetTextureAlphaMod;
|
||||
renderer->SetTextureBlendMode = SW_SetTextureBlendMode;
|
||||
renderer->UpdateTexture = SW_UpdateTexture;
|
||||
renderer->LockTexture = SW_LockTexture;
|
||||
renderer->UnlockTexture = SW_UnlockTexture;
|
||||
renderer->UpdateViewport = SW_UpdateViewport;
|
||||
renderer->DestroyTexture = SW_DestroyTexture;
|
||||
renderer->RenderClear = SW_RenderClear;
|
||||
renderer->RenderDrawPoints = SW_RenderDrawPoints;
|
||||
renderer->RenderDrawLines = SW_RenderDrawLines;
|
||||
renderer->RenderFillRects = SW_RenderFillRects;
|
||||
renderer->RenderCopy = SW_RenderCopy;
|
||||
renderer->RenderReadPixels = SW_RenderReadPixels;
|
||||
renderer->RenderPresent = SW_RenderPresent;
|
||||
renderer->DestroyRenderer = SW_DestroyRenderer;
|
||||
renderer->info = SW_RenderDriver.info;
|
||||
renderer->driverdata = data;
|
||||
|
||||
SW_ActivateRenderer(renderer);
|
||||
|
||||
return renderer;
|
||||
}
|
||||
|
||||
SDL_Renderer *
|
||||
SW_CreateRenderer(SDL_Window * window, Uint32 flags)
|
||||
{
|
||||
SDL_Surface *surface;
|
||||
|
||||
surface = SDL_GetWindowSurface(window);
|
||||
if (!surface) {
|
||||
return NULL;
|
||||
}
|
||||
return SW_CreateRendererForSurface(surface);
|
||||
}
|
||||
|
||||
static void
|
||||
SW_WindowEvent(SDL_Renderer * renderer, const SDL_WindowEvent *event)
|
||||
{
|
||||
SW_RenderData *data = (SW_RenderData *) renderer->driverdata;
|
||||
|
||||
if (event->event == SDL_WINDOWEVENT_SIZE_CHANGED) {
|
||||
data->surface = NULL;
|
||||
}
|
||||
}
|
||||
|
||||
static int
|
||||
SW_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture)
|
||||
{
|
||||
int bpp;
|
||||
Uint32 Rmask, Gmask, Bmask, Amask;
|
||||
|
||||
if (!SDL_PixelFormatEnumToMasks
|
||||
(texture->format, &bpp, &Rmask, &Gmask, &Bmask, &Amask)) {
|
||||
SDL_SetError("Unknown texture format");
|
||||
return -1;
|
||||
}
|
||||
|
||||
texture->driverdata =
|
||||
SDL_CreateRGBSurface(0, texture->w, texture->h, bpp, Rmask, Gmask,
|
||||
Bmask, Amask);
|
||||
SDL_SetSurfaceColorMod(texture->driverdata, texture->r, texture->g,
|
||||
texture->b);
|
||||
SDL_SetSurfaceAlphaMod(texture->driverdata, texture->a);
|
||||
SDL_SetSurfaceBlendMode(texture->driverdata, texture->blendMode);
|
||||
|
||||
if (texture->access == SDL_TEXTUREACCESS_STATIC) {
|
||||
SDL_SetSurfaceRLE(texture->driverdata, 1);
|
||||
}
|
||||
|
||||
if (!texture->driverdata) {
|
||||
return -1;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
SW_SetTextureColorMod(SDL_Renderer * renderer, SDL_Texture * texture)
|
||||
{
|
||||
SDL_Surface *surface = (SDL_Surface *) texture->driverdata;
|
||||
return SDL_SetSurfaceColorMod(surface, texture->r, texture->g,
|
||||
texture->b);
|
||||
}
|
||||
|
||||
static int
|
||||
SW_SetTextureAlphaMod(SDL_Renderer * renderer, SDL_Texture * texture)
|
||||
{
|
||||
SDL_Surface *surface = (SDL_Surface *) texture->driverdata;
|
||||
return SDL_SetSurfaceAlphaMod(surface, texture->a);
|
||||
}
|
||||
|
||||
static int
|
||||
SW_SetTextureBlendMode(SDL_Renderer * renderer, SDL_Texture * texture)
|
||||
{
|
||||
SDL_Surface *surface = (SDL_Surface *) texture->driverdata;
|
||||
return SDL_SetSurfaceBlendMode(surface, texture->blendMode);
|
||||
}
|
||||
|
||||
static int
|
||||
SW_UpdateTexture(SDL_Renderer * renderer, SDL_Texture * texture,
|
||||
const SDL_Rect * rect, const void *pixels, int pitch)
|
||||
{
|
||||
SDL_Surface *surface = (SDL_Surface *) texture->driverdata;
|
||||
Uint8 *src, *dst;
|
||||
int row;
|
||||
size_t length;
|
||||
|
||||
src = (Uint8 *) pixels;
|
||||
dst = (Uint8 *) surface->pixels +
|
||||
rect->y * surface->pitch +
|
||||
rect->x * surface->format->BytesPerPixel;
|
||||
length = rect->w * surface->format->BytesPerPixel;
|
||||
for (row = 0; row < rect->h; ++row) {
|
||||
SDL_memcpy(dst, src, length);
|
||||
src += pitch;
|
||||
dst += surface->pitch;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
SW_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture,
|
||||
const SDL_Rect * rect, void **pixels, int *pitch)
|
||||
{
|
||||
SDL_Surface *surface = (SDL_Surface *) texture->driverdata;
|
||||
|
||||
*pixels =
|
||||
(void *) ((Uint8 *) surface->pixels + rect->y * surface->pitch +
|
||||
rect->x * surface->format->BytesPerPixel);
|
||||
*pitch = surface->pitch;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void
|
||||
SW_UnlockTexture(SDL_Renderer * renderer, SDL_Texture * texture)
|
||||
{
|
||||
}
|
||||
|
||||
static int
|
||||
SW_UpdateViewport(SDL_Renderer * renderer)
|
||||
{
|
||||
SW_RenderData *data = (SW_RenderData *) renderer->driverdata;
|
||||
SDL_Surface *surface = data->surface;
|
||||
|
||||
if (!surface) {
|
||||
/* We'll update the viewport after we recreate the surface */
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (!renderer->viewport.w && !renderer->viewport.h) {
|
||||
/* There may be no window, so update the viewport directly */
|
||||
renderer->viewport.w = surface->w;
|
||||
renderer->viewport.h = surface->h;
|
||||
}
|
||||
SDL_SetClipRect(data->surface, &renderer->viewport);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
SW_RenderClear(SDL_Renderer * renderer)
|
||||
{
|
||||
SDL_Surface *surface = SW_ActivateRenderer(renderer);
|
||||
Uint32 color;
|
||||
SDL_Rect clip_rect;
|
||||
|
||||
if (!surface) {
|
||||
return -1;
|
||||
}
|
||||
|
||||
color = SDL_MapRGBA(surface->format,
|
||||
renderer->r, renderer->g, renderer->b, renderer->a);
|
||||
|
||||
/* By definition the clear ignores the clip rect */
|
||||
clip_rect = surface->clip_rect;
|
||||
SDL_SetClipRect(surface, NULL);
|
||||
SDL_FillRect(surface, NULL, color);
|
||||
SDL_SetClipRect(surface, &clip_rect);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
SW_RenderDrawPoints(SDL_Renderer * renderer, const SDL_Point * points,
|
||||
int count)
|
||||
{
|
||||
SDL_Surface *surface = SW_ActivateRenderer(renderer);
|
||||
SDL_Point *temp = NULL;
|
||||
int status;
|
||||
|
||||
if (!surface) {
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (renderer->viewport.x || renderer->viewport.y) {
|
||||
int i;
|
||||
int x = renderer->viewport.x;
|
||||
int y = renderer->viewport.y;
|
||||
|
||||
temp = SDL_stack_alloc(SDL_Point, count);
|
||||
for (i = 0; i < count; ++i) {
|
||||
temp[i].x = x + points[i].x;
|
||||
temp[i].y = y + points[i].x;
|
||||
}
|
||||
points = temp;
|
||||
}
|
||||
|
||||
/* Draw the points! */
|
||||
if (renderer->blendMode == SDL_BLENDMODE_NONE) {
|
||||
Uint32 color = SDL_MapRGBA(surface->format,
|
||||
renderer->r, renderer->g, renderer->b,
|
||||
renderer->a);
|
||||
|
||||
status = SDL_DrawPoints(surface, points, count, color);
|
||||
} else {
|
||||
status = SDL_BlendPoints(surface, points, count,
|
||||
renderer->blendMode,
|
||||
renderer->r, renderer->g, renderer->b,
|
||||
renderer->a);
|
||||
}
|
||||
|
||||
if (temp) {
|
||||
SDL_stack_free(temp);
|
||||
}
|
||||
return status;
|
||||
}
|
||||
|
||||
static int
|
||||
SW_RenderDrawLines(SDL_Renderer * renderer, const SDL_Point * points,
|
||||
int count)
|
||||
{
|
||||
SDL_Surface *surface = SW_ActivateRenderer(renderer);
|
||||
SDL_Point *temp = NULL;
|
||||
int status;
|
||||
|
||||
if (!surface) {
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (renderer->viewport.x || renderer->viewport.y) {
|
||||
int i;
|
||||
int x = renderer->viewport.x;
|
||||
int y = renderer->viewport.y;
|
||||
|
||||
temp = SDL_stack_alloc(SDL_Point, count);
|
||||
for (i = 0; i < count; ++i) {
|
||||
temp[i].x = x + points[i].x;
|
||||
temp[i].y = y + points[i].y;
|
||||
}
|
||||
points = temp;
|
||||
}
|
||||
|
||||
/* Draw the lines! */
|
||||
if (renderer->blendMode == SDL_BLENDMODE_NONE) {
|
||||
Uint32 color = SDL_MapRGBA(surface->format,
|
||||
renderer->r, renderer->g, renderer->b,
|
||||
renderer->a);
|
||||
|
||||
status = SDL_DrawLines(surface, points, count, color);
|
||||
} else {
|
||||
status = SDL_BlendLines(surface, points, count,
|
||||
renderer->blendMode,
|
||||
renderer->r, renderer->g, renderer->b,
|
||||
renderer->a);
|
||||
}
|
||||
|
||||
if (temp) {
|
||||
SDL_stack_free(temp);
|
||||
}
|
||||
return status;
|
||||
}
|
||||
|
||||
static int
|
||||
SW_RenderFillRects(SDL_Renderer * renderer, const SDL_Rect * rects, int count)
|
||||
{
|
||||
SDL_Surface *surface = SW_ActivateRenderer(renderer);
|
||||
SDL_Rect *temp = NULL;
|
||||
int status;
|
||||
|
||||
if (!surface) {
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (renderer->viewport.x || renderer->viewport.y) {
|
||||
int i;
|
||||
int x = renderer->viewport.x;
|
||||
int y = renderer->viewport.y;
|
||||
|
||||
temp = SDL_stack_alloc(SDL_Rect, count);
|
||||
for (i = 0; i < count; ++i) {
|
||||
temp[i].x = x + rects[i].x;
|
||||
temp[i].y = y + rects[i].y;
|
||||
temp[i].w = rects[i].w;
|
||||
temp[i].h = rects[i].h;
|
||||
}
|
||||
rects = temp;
|
||||
}
|
||||
|
||||
if (renderer->blendMode == SDL_BLENDMODE_NONE) {
|
||||
Uint32 color = SDL_MapRGBA(surface->format,
|
||||
renderer->r, renderer->g, renderer->b,
|
||||
renderer->a);
|
||||
status = SDL_FillRects(surface, rects, count, color);
|
||||
} else {
|
||||
status = SDL_BlendFillRects(surface, rects, count,
|
||||
renderer->blendMode,
|
||||
renderer->r, renderer->g, renderer->b,
|
||||
renderer->a);
|
||||
}
|
||||
|
||||
if (temp) {
|
||||
SDL_stack_free(temp);
|
||||
}
|
||||
return status;
|
||||
}
|
||||
|
||||
static int
|
||||
SW_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture,
|
||||
const SDL_Rect * srcrect, const SDL_Rect * dstrect)
|
||||
{
|
||||
SDL_Surface *surface = SW_ActivateRenderer(renderer);
|
||||
SDL_Surface *src = (SDL_Surface *) texture->driverdata;
|
||||
SDL_Rect final_rect = *dstrect;
|
||||
|
||||
if (!surface) {
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (renderer->viewport.x || renderer->viewport.y) {
|
||||
final_rect.x += renderer->viewport.x;
|
||||
final_rect.y += renderer->viewport.y;
|
||||
}
|
||||
if ( srcrect->w == final_rect.w && srcrect->h == final_rect.h ) {
|
||||
return SDL_BlitSurface(src, srcrect, surface, &final_rect);
|
||||
} else {
|
||||
return SDL_BlitScaled(src, srcrect, surface, &final_rect);
|
||||
}
|
||||
}
|
||||
|
||||
static int
|
||||
SW_RenderReadPixels(SDL_Renderer * renderer, const SDL_Rect * rect,
|
||||
Uint32 format, void * pixels, int pitch)
|
||||
{
|
||||
SDL_Surface *surface = SW_ActivateRenderer(renderer);
|
||||
Uint32 src_format;
|
||||
void *src_pixels;
|
||||
SDL_Rect final_rect;
|
||||
|
||||
if (!surface) {
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (renderer->viewport.x || renderer->viewport.y) {
|
||||
final_rect.x = renderer->viewport.x + rect->x;
|
||||
final_rect.y = renderer->viewport.y + rect->y;
|
||||
final_rect.w = rect->w;
|
||||
final_rect.h = rect->h;
|
||||
rect = &final_rect;
|
||||
}
|
||||
|
||||
if (rect->x < 0 || rect->x+rect->w > surface->w ||
|
||||
rect->y < 0 || rect->y+rect->h > surface->h) {
|
||||
SDL_SetError("Tried to read outside of surface bounds");
|
||||
return -1;
|
||||
}
|
||||
|
||||
src_format = surface->format->format;
|
||||
src_pixels = (void*)((Uint8 *) surface->pixels +
|
||||
rect->y * surface->pitch +
|
||||
rect->x * surface->format->BytesPerPixel);
|
||||
|
||||
return SDL_ConvertPixels(rect->w, rect->h,
|
||||
src_format, src_pixels, surface->pitch,
|
||||
format, pixels, pitch);
|
||||
}
|
||||
|
||||
static void
|
||||
SW_RenderPresent(SDL_Renderer * renderer)
|
||||
{
|
||||
SDL_Window *window = renderer->window;
|
||||
|
||||
if (window) {
|
||||
SDL_UpdateWindowSurface(window);
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
SW_DestroyTexture(SDL_Renderer * renderer, SDL_Texture * texture)
|
||||
{
|
||||
SDL_Surface *surface = (SDL_Surface *) texture->driverdata;
|
||||
|
||||
SDL_FreeSurface(surface);
|
||||
}
|
||||
|
||||
static void
|
||||
SW_DestroyRenderer(SDL_Renderer * renderer)
|
||||
{
|
||||
SW_RenderData *data = (SW_RenderData *) renderer->driverdata;
|
||||
|
||||
if (data) {
|
||||
SDL_free(data);
|
||||
}
|
||||
SDL_free(renderer);
|
||||
}
|
||||
|
||||
#endif /* !SDL_RENDER_DISABLED */
|
||||
|
||||
/* vi: set ts=4 sw=4 expandtab: */
|
||||
@@ -0,0 +1,24 @@
|
||||
/*
|
||||
Simple DirectMedia Layer
|
||||
Copyright (C) 1997-2011 Sam Lantinga <slouken@libsdl.org>
|
||||
|
||||
This software is provided 'as-is', without any express or implied
|
||||
warranty. In no event will the authors be held liable for any damages
|
||||
arising from the use of this software.
|
||||
|
||||
Permission is granted to anyone to use this software for any purpose,
|
||||
including commercial applications, and to alter it and redistribute it
|
||||
freely, subject to the following restrictions:
|
||||
|
||||
1. The origin of this software must not be misrepresented; you must not
|
||||
claim that you wrote the original software. If you use this software
|
||||
in a product, an acknowledgment in the product documentation would be
|
||||
appreciated but is not required.
|
||||
2. Altered source versions must be plainly marked as such, and must not be
|
||||
misrepresented as being the original software.
|
||||
3. This notice may not be removed or altered from any source distribution.
|
||||
*/
|
||||
|
||||
extern SDL_Renderer * SW_CreateRendererForSurface(SDL_Surface * surface);
|
||||
|
||||
/* vi: set ts=4 sw=4 expandtab: */
|
||||
Reference in New Issue
Block a user