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SDL_triangle_blit_slow: sync code with SDL_blit_slow to handle ARGB2101010

This commit is contained in:
Sylvain 2022-03-16 18:09:40 +01:00
parent 93e7caab9a
commit b2db570ce9
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GPG Key ID: 5F87E02E5BC0939E
1 changed files with 43 additions and 14 deletions
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57
src/render/software/SDL_triangle.c
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@ -718,6 +718,21 @@ end:
}
#define FORMAT_ALPHA 0
#define FORMAT_NO_ALPHA -1
#define FORMAT_2101010 1
#define FORMAT_HAS_ALPHA(format) format == 0
#define FORMAT_HAS_NO_ALPHA(format) format < 0
static int SDL_INLINE detect_format(SDL_PixelFormat *pf) {
if (pf->format == SDL_PIXELFORMAT_ARGB2101010) {
return FORMAT_2101010;
} else if (pf->Amask) {
return FORMAT_ALPHA;
} else {
return FORMAT_NO_ALPHA;
}
}
static void
SDL_BlitTriangle_Slow(SDL_BlitInfo *info,
SDL_Point s2_x_area, SDL_Rect dstrect, int area, int bias_w0, int bias_w1, int bias_w2,
@ -738,25 +753,32 @@ SDL_BlitTriangle_Slow(SDL_BlitInfo *info,
SDL_PixelFormat *dst_fmt = info->dst_fmt;
int srcbpp = src_fmt->BytesPerPixel;
int dstbpp = dst_fmt->BytesPerPixel;
int srcfmt_val;
int dstfmt_val;
Uint32 rgbmask = ~src_fmt->Amask;
Uint32 ckey = info->colorkey & rgbmask;
Uint8 *dst_ptr = info->dst;
int dst_pitch = info->dst_pitch;;
srcfmt_val = detect_format(src_fmt);
dstfmt_val = detect_format(dst_fmt);
TRIANGLE_BEGIN_LOOP
{
Uint8 *src;
Uint8 *dst = dptr;
TRIANGLE_GET_TEXTCOORD
src = (info->src + (srcy * info->src_pitch) + (srcx * srcbpp));
if (src_fmt->Amask) {
DISEMBLE_RGBA(src, srcbpp, src_fmt, srcpixel, srcR, srcG,
srcB, srcA);
} else {
DISEMBLE_RGB(src, srcbpp, src_fmt, srcpixel, srcR, srcG,
srcB);
if (FORMAT_HAS_ALPHA(srcfmt_val)) {
DISEMBLE_RGBA(src, srcbpp, src_fmt, srcpixel, srcR, srcG, srcB, srcA);
} else if (FORMAT_HAS_NO_ALPHA(srcfmt_val)) {
DISEMBLE_RGB(src, srcbpp, src_fmt, srcpixel, srcR, srcG, srcB);
srcA = 0xFF;
} else {
/* SDL_PIXELFORMAT_ARGB2101010 */
srcpixel = *((Uint32 *)(src));
RGBA_FROM_ARGB2101010(srcpixel, srcR, srcG, srcB, srcA);
}
if (flags & SDL_COPY_COLORKEY) {
/* srcpixel isn't set for 24 bpp */
@ -768,13 +790,15 @@ SDL_BlitTriangle_Slow(SDL_BlitInfo *info,
continue;
}
}
if (dst_fmt->Amask) {
DISEMBLE_RGBA(dst, dstbpp, dst_fmt, dstpixel, dstR, dstG,
dstB, dstA);
} else {
DISEMBLE_RGB(dst, dstbpp, dst_fmt, dstpixel, dstR, dstG,
dstB);
if (FORMAT_HAS_ALPHA(dstfmt_val)) {
DISEMBLE_RGBA(dst, dstbpp, dst_fmt, dstpixel, dstR, dstG, dstB, dstA);
} else if (FORMAT_HAS_NO_ALPHA(dstfmt_val)) {
DISEMBLE_RGB(dst, dstbpp, dst_fmt, dstpixel, dstR, dstG, dstB);
dstA = 0xFF;
} else {
/* SDL_PIXELFORMAT_ARGB2101010 */
dstpixel = *((Uint32 *)(dst));
RGBA_FROM_ARGB2101010(dstpixel, dstR, dstG, dstB, dstA);
}
if (! is_uniform) {
@ -845,10 +869,15 @@ SDL_BlitTriangle_Slow(SDL_BlitInfo *info,
dstA = 255;
break;
}
if (dst_fmt->Amask) {
if (FORMAT_HAS_ALPHA(dstfmt_val)) {
ASSEMBLE_RGBA(dst, dstbpp, dst_fmt, dstR, dstG, dstB, dstA);
} else {
} else if (FORMAT_HAS_NO_ALPHA(dstfmt_val)) {
ASSEMBLE_RGB(dst, dstbpp, dst_fmt, dstR, dstG, dstB);
} else {
/* SDL_PIXELFORMAT_ARGB2101010 */
Uint32 pixel;
ARGB2101010_FROM_RGBA(pixel, dstR, dstG, dstB, dstA);
*(Uint32 *)dst = pixel;
}
}
TRIANGLE_END_LOOP