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Cleanups to standard scaling

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git-svn-id: svn://svn.code.sf.net/p/sc2/code/trunk@466 8092fc87-c524-0410-9efc-e669fe64eaf9
This commit is contained in:
gewlitys
2002-12-22 18:20:13 +00:00
parent caac6b75f4
commit a7f5824b35
1 changed files with 14 additions and 29 deletions
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sc2/src/sc2code/libs/graphics/sdl/pure.c
+14 -29
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@@ -140,39 +140,34 @@ static void Scale_Nearest (SDL_Surface *src, SDL_Surface *dst)
{
int x, y;
const int w = src->w, h = src->h;
Uint8 *src_p = (Uint8 *) src->pixels, *dst_p = (Uint8 *)dst->pixels, *src_p2;
switch (dst->format->BytesPerPixel)
{
case 2:
{
Uint16 *src_p = (Uint16 *)src->pixels, *dst_p = (Uint16 *)dst->pixels, *src_p2;
Uint16 pixval_16;
for (y = 0; y < h; ++y)
{
src_p2 = dst_p;
for (x = 0; x < w; ++x)
{
pixval_16 = *(Uint16*)src_p;
src_p += 2;
*(Uint16*)dst_p = pixval_16;
dst_p += 2;
*(Uint16*)dst_p = pixval_16;
dst_p += 2;
pixval_16 = *src_p++;
*dst_p++ = pixval_16;
*dst_p++ = pixval_16;
}
for (x = 0; x < w; ++x)
{
*(Uint32*)dst_p = *(Uint32*)src_p2;
dst_p += 4;
src_p2 += 4;
dst_p += 2;
src_p2 += 2;
}
}
break;
}
case 3:
{
// FIXME: this one might have endian issues
Uint8 *src_p = (Uint8 *)src->pixels, *dst_p = (Uint8 *)dst->pixels, *src_p2;
Uint32 pixval_32;
for (y = 0; y < h; ++y)
{
@@ -181,7 +176,6 @@ static void Scale_Nearest (SDL_Surface *src, SDL_Surface *dst)
{
pixval_32 = *(Uint32*)src_p;
src_p += 3;
*(Uint32*)dst_p = pixval_32;
dst_p += 3;
*(Uint32*)dst_p = pixval_32;
@@ -192,7 +186,6 @@ static void Scale_Nearest (SDL_Surface *src, SDL_Surface *dst)
{
pixval_32 = *(Uint32*)src_p;
src_p += 3;
*(Uint32*)dst_p = pixval_32;
dst_p += 3;
*(Uint32*)dst_p = pixval_32;
@@ -203,31 +196,23 @@ static void Scale_Nearest (SDL_Surface *src, SDL_Surface *dst)
}
case 4:
{
Uint32 *src_p = (Uint32 *)src->pixels, *dst_p = (Uint32 *)dst->pixels, *src_p2;
Uint32 pixval_32;
for (y = 0; y < h; ++y)
{
src_p2 = src_p;
for (x = 0; x < w; ++x)
{
pixval_32 = *(Uint32*)src_p;
src_p += 4;
*(Uint32*)dst_p = pixval_32;
dst_p += 4;
*(Uint32*)dst_p = pixval_32;
dst_p += 4;
pixval_32 = *src_p++;
*dst_p++ = pixval_32;
*dst_p++ = pixval_32;
}
src_p = src_p2;
for (x = 0; x < w; ++x)
{
pixval_32 = *(Uint32*)src_p;
src_p += 4;
*(Uint32*)dst_p = pixval_32;
dst_p += 4;
*(Uint32*)dst_p = pixval_32;
dst_p += 4;
pixval_32 = *src_p++;
*dst_p++ = pixval_32;
*dst_p++ = pixval_32;
}
}
break;