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triangle: don't read destination pixel when you're going to discard it anyways

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This commit is contained in:
Anonymous Maarten 2023-10-05 13:40:09 +02:00
parent 2d5c05a69c
commit 43c57e3239
1 changed files with 13 additions and 8 deletions
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5
src/render/software/SDL_triangle.c
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@ -789,6 +789,7 @@ static void SDL_BlitTriangle_Slow(SDL_BlitInfo *info,
continue; continue;
} }
} }
if ((flags & (SDL_COPY_BLEND | SDL_COPY_ADD | SDL_COPY_MOD | SDL_COPY_MUL))) {
if (FORMAT_HAS_ALPHA(dstfmt_val)) { if (FORMAT_HAS_ALPHA(dstfmt_val)) {
DISEMBLE_RGBA(dst, dstbpp, dst_fmt, dstpixel, dstR, dstG, dstB, dstA); DISEMBLE_RGBA(dst, dstbpp, dst_fmt, dstpixel, dstR, dstG, dstB, dstA);
} else if (FORMAT_HAS_NO_ALPHA(dstfmt_val)) { } else if (FORMAT_HAS_NO_ALPHA(dstfmt_val)) {
@ -799,6 +800,10 @@ static void SDL_BlitTriangle_Slow(SDL_BlitInfo *info,
dstpixel = *((Uint32 *) (dst)); dstpixel = *((Uint32 *) (dst));
RGBA_FROM_ARGB2101010(dstpixel, dstR, dstG, dstB, dstA); RGBA_FROM_ARGB2101010(dstpixel, dstR, dstG, dstB, dstA);
} }
} else {
/* don't care */
dstR = dstG = dstB = dstA = 0;
}
if (!is_uniform) { if (!is_uniform) {
TRIANGLE_GET_COLOR TRIANGLE_GET_COLOR