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); } } }
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) { 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; } } }