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Simplify SDL_BLENDMODE_MUL

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Sylvain 2023-03-16 09:46:44 +01:00 committed by Sylvain Becker
parent bd70ce7f94
commit 7d26ba754a
4 changed files with 2 additions and 13 deletions
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2
include/SDL_blendmode.h
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@ -52,7 +52,7 @@ typedef enum
dstA = dstA */ dstA = dstA */
SDL_BLENDMODE_MUL = 0x00000008, /**< color multiply SDL_BLENDMODE_MUL = 0x00000008, /**< color multiply
dstRGB = (srcRGB * dstRGB) + (dstRGB * (1-srcA)) dstRGB = (srcRGB * dstRGB) + (dstRGB * (1-srcA))
dstA = (srcA * dstA) + (dstA * (1-srcA)) */ dstA = dstA */
SDL_BLENDMODE_INVALID = 0x7FFFFFFF SDL_BLENDMODE_INVALID = 0x7FFFFFFF
/* Additional custom blend modes can be returned by SDL_ComposeCustomBlendMode() */ /* Additional custom blend modes can be returned by SDL_ComposeCustomBlendMode() */

5
src/render/software/SDL_draw.h
View file

@ -91,7 +91,7 @@
#define DRAW_SETPIXEL_MUL(getpixel, setpixel) \ #define DRAW_SETPIXEL_MUL(getpixel, setpixel) \
do { \ do { \
unsigned sr, sg, sb, sa; \ unsigned sr, sg, sb, sa; \
sa = 0xFF; \ (void)sa; \
getpixel; \ getpixel; \
sr = DRAW_MUL(sr, r) + DRAW_MUL(inva, sr); \ sr = DRAW_MUL(sr, r) + DRAW_MUL(inva, sr); \
if (sr > 0xff) \ if (sr > 0xff) \
@ -102,9 +102,6 @@
sb = DRAW_MUL(sb, b) + DRAW_MUL(inva, sb); \ sb = DRAW_MUL(sb, b) + DRAW_MUL(inva, sb); \
if (sb > 0xff) \ if (sb > 0xff) \
sb = 0xff; \ sb = 0xff; \
sa = DRAW_MUL(sa, a) + DRAW_MUL(inva, sa); \
if (sa > 0xff) \
sa = 0xff; \
setpixel; \ setpixel; \
} while (0) } while (0)

4
src/render/software/SDL_triangle.c
View file

@ -869,10 +869,6 @@ static void SDL_BlitTriangle_Slow(SDL_BlitInfo *info,
if (dstB > 255) { if (dstB > 255) {
dstB = 255; dstB = 255;
} }
dstA = ((srcA * dstA) + (dstA * (255 - srcA))) / 255;
if (dstA > 255) {
dstA = 255;
}
break; break;
} }
if (FORMAT_HAS_ALPHA(dstfmt_val)) { if (FORMAT_HAS_ALPHA(dstfmt_val)) {

4
src/video/SDL_blit_slow.c
View file

@ -178,10 +178,6 @@ void SDL_Blit_Slow(SDL_BlitInfo *info)
if (dstB > 255) { if (dstB > 255) {
dstB = 255; dstB = 255;
} }
dstA = ((srcA * dstA) + (dstA * (255 - srcA))) / 255;
if (dstA > 255) {
dstA = 255;
}
break; break;
} }
if (FORMAT_HAS_ALPHA(dstfmt_val)) { if (FORMAT_HAS_ALPHA(dstfmt_val)) {