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Reduce the size of the SDL_blit_0 alpha code

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This commit is contained in:
Cameron Cawley
2024-10-12 16:06:31 +01:00
committed by Sam Lantinga
parent e2f27362cb
commit 90f792f83c
1 changed files with 19 additions and 48 deletions
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67
src/video/SDL_blit_0.c
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@@ -605,11 +605,8 @@ SDL_FORCE_INLINE void BlitBto4Key(SDL_BlitInfo *info, const Uint32 srcbpp)
}
}
SDL_FORCE_INLINE void BlitBtoNAlpha(SDL_BlitInfo *info, const Uint32 srcbpp)
static void BlitBtoNAlpha(SDL_BlitInfo *info)
{
const Uint32 mask = (1 << srcbpp) - 1;
const Uint32 align = (8 / srcbpp) - 1;
int width = info->dst_w;
int height = info->dst_h;
Uint8 *src = info->src;
@@ -617,15 +614,17 @@ SDL_FORCE_INLINE void BlitBtoNAlpha(SDL_BlitInfo *info, const Uint32 srcbpp)
int srcskip = info->src_skip;
int dstskip = info->dst_skip;
const SDL_Color *srcpal = info->src_fmt->palette->colors;
SDL_PixelFormat *srcfmt = info->src_fmt;
SDL_PixelFormat *dstfmt = info->dst_fmt;
int dstbpp;
int srcbpp, dstbpp;
int c;
Uint32 pixel;
Uint32 pixel, mask, align;
unsigned sR, sG, sB;
unsigned dR, dG, dB, dA;
const unsigned A = info->a;
/* Set up some basic variables */
srcbpp = srcfmt->BytesPerPixel;
dstbpp = dstfmt->BytesPerPixel;
if (srcbpp == 4)
srcskip += width - (width + 1) / 2;
@@ -633,6 +632,8 @@ SDL_FORCE_INLINE void BlitBtoNAlpha(SDL_BlitInfo *info, const Uint32 srcbpp)
srcskip += width - (width + 3) / 4;
else if (srcbpp == 1)
srcskip += width - (width + 7) / 8;
mask = (1 << srcbpp) - 1;
align = (8 / srcbpp) - 1;
if (SDL_PIXELORDER(info->src_fmt->format) == SDL_BITMAPORDER_4321) {
while (height--) {
@@ -681,11 +682,8 @@ SDL_FORCE_INLINE void BlitBtoNAlpha(SDL_BlitInfo *info, const Uint32 srcbpp)
}
}
SDL_FORCE_INLINE void BlitBtoNAlphaKey(SDL_BlitInfo *info, const Uint32 srcbpp)
static void BlitBtoNAlphaKey(SDL_BlitInfo *info)
{
const Uint32 mask = (1 << srcbpp) - 1;
const Uint32 align = (8 / srcbpp) - 1;
int width = info->dst_w;
int height = info->dst_h;
Uint8 *src = info->src;
@@ -695,15 +693,16 @@ SDL_FORCE_INLINE void BlitBtoNAlphaKey(SDL_BlitInfo *info, const Uint32 srcbpp)
SDL_PixelFormat *srcfmt = info->src_fmt;
SDL_PixelFormat *dstfmt = info->dst_fmt;
const SDL_Color *srcpal = srcfmt->palette->colors;
int dstbpp;
int srcbpp, dstbpp;
int c;
Uint32 pixel;
Uint32 pixel, mask, align;
unsigned sR, sG, sB;
unsigned dR, dG, dB, dA;
const unsigned A = info->a;
Uint32 ckey = info->colorkey;
/* Set up some basic variables */
srcbpp = srcfmt->BytesPerPixel;
dstbpp = dstfmt->BytesPerPixel;
if (srcbpp == 4)
srcskip += width - (width + 1) / 2;
@@ -711,6 +710,8 @@ SDL_FORCE_INLINE void BlitBtoNAlphaKey(SDL_BlitInfo *info, const Uint32 srcbpp)
srcskip += width - (width + 3) / 4;
else if (srcbpp == 1)
srcskip += width - (width + 7) / 8;
mask = (1 << srcbpp) - 1;
align = (8 / srcbpp) - 1;
if (SDL_PIXELORDER(info->src_fmt->format) == SDL_BITMAPORDER_4321) {
while (height--) {
@@ -801,16 +802,6 @@ static const SDL_BlitFunc colorkey_blit_1b[] = {
(SDL_BlitFunc)NULL, Blit1bto1Key, Blit1bto2Key, Blit1bto3Key, Blit1bto4Key
};
static void Blit1btoNAlpha(SDL_BlitInfo *info)
{
BlitBtoNAlpha(info, 1);
}
static void Blit1btoNAlphaKey(SDL_BlitInfo *info)
{
BlitBtoNAlphaKey(info, 1);
}
static void Blit2bto1(SDL_BlitInfo *info) {
@@ -853,16 +844,6 @@ static const SDL_BlitFunc colorkey_blit_2b[] = {
(SDL_BlitFunc)NULL, Blit2bto1Key, Blit2bto2Key, Blit2bto3Key, Blit2bto4Key
};
static void Blit2btoNAlpha(SDL_BlitInfo *info)
{
BlitBtoNAlpha(info, 2);
}
static void Blit2btoNAlphaKey(SDL_BlitInfo *info)
{
BlitBtoNAlphaKey(info, 2);
}
static void Blit4bto1(SDL_BlitInfo *info) {
@@ -905,16 +886,6 @@ static const SDL_BlitFunc colorkey_blit_4b[] = {
(SDL_BlitFunc)NULL, Blit4bto1Key, Blit4bto2Key, Blit4bto3Key, Blit4bto4Key
};
static void Blit4btoNAlpha(SDL_BlitInfo *info)
{
BlitBtoNAlpha(info, 4);
}
static void Blit4btoNAlphaKey(SDL_BlitInfo *info)
{
BlitBtoNAlphaKey(info, 4);
}
SDL_BlitFunc SDL_CalculateBlit0(SDL_Surface *surface)
@@ -936,10 +907,10 @@ SDL_BlitFunc SDL_CalculateBlit0(SDL_Surface *surface)
return colorkey_blit_1b[which];
case SDL_COPY_MODULATE_ALPHA | SDL_COPY_BLEND:
return which >= 2 ? Blit1btoNAlpha : (SDL_BlitFunc)NULL;
return which >= 2 ? BlitBtoNAlpha : (SDL_BlitFunc)NULL;
case SDL_COPY_COLORKEY | SDL_COPY_MODULATE_ALPHA | SDL_COPY_BLEND:
return which >= 2 ? Blit1btoNAlphaKey : (SDL_BlitFunc)NULL;
return which >= 2 ? BlitBtoNAlphaKey : (SDL_BlitFunc)NULL;
}
return NULL;
}
@@ -953,10 +924,10 @@ SDL_BlitFunc SDL_CalculateBlit0(SDL_Surface *surface)
return colorkey_blit_2b[which];
case SDL_COPY_MODULATE_ALPHA | SDL_COPY_BLEND:
return which >= 2 ? Blit2btoNAlpha : (SDL_BlitFunc)NULL;
return which >= 2 ? BlitBtoNAlpha : (SDL_BlitFunc)NULL;
case SDL_COPY_COLORKEY | SDL_COPY_MODULATE_ALPHA | SDL_COPY_BLEND:
return which >= 2 ? Blit2btoNAlphaKey : (SDL_BlitFunc)NULL;
return which >= 2 ? BlitBtoNAlphaKey : (SDL_BlitFunc)NULL;
}
return NULL;
}
@@ -970,10 +941,10 @@ SDL_BlitFunc SDL_CalculateBlit0(SDL_Surface *surface)
return colorkey_blit_4b[which];
case SDL_COPY_MODULATE_ALPHA | SDL_COPY_BLEND:
return which >= 2 ? Blit4btoNAlpha : (SDL_BlitFunc)NULL;
return which >= 2 ? BlitBtoNAlpha : (SDL_BlitFunc)NULL;
case SDL_COPY_COLORKEY | SDL_COPY_MODULATE_ALPHA | SDL_COPY_BLEND:
return which >= 2 ? Blit4btoNAlphaKey : (SDL_BlitFunc)NULL;
return which >= 2 ? BlitBtoNAlphaKey : (SDL_BlitFunc)NULL;
}
return NULL;
}