actions/itgmania212121
1
0
Fork 0
Code Issues Pull Requests Actions 1 Packages Projects Releases Wiki Activity

simplify and hopefully fix a crash

Browse Source
This commit is contained in:
Glenn Maynard
2003-01-26 00:50:22 +00:00
parent 55e1a75d7c
commit ea7867ac37
1 changed files with 8 additions and 17 deletions
Download Patch File Download Diff File Expand all files Collapse all files
stepmania/src/SDL_utils.cpp
+8 -17
View File
@@ -232,8 +232,7 @@ SDL_Surface *SDL_CreateRGBSurfaceSane
return SDL_CreateRGBSurface(flags, width, height, depth,
Rmask, Gmask, Bmask, Amask);
}
static void FindAlphaRGB(SDL_Surface *img, Uint8 &r, Uint8 &g, Uint8 &b, bool reverse)
static void FindAlphaRGB(const SDL_Surface *img, Uint8 &r, Uint8 &g, Uint8 &b, bool reverse)
{
/* If we have no alpha or no color key, there's no alpha color. */
if(img->format->BitsPerPixel == 8 && !(img->flags & SDL_SRCCOLORKEY))
@@ -247,25 +246,17 @@ static void FindAlphaRGB(SDL_Surface *img, Uint8 &r, Uint8 &g, Uint8 &b, bool re
{
Uint8 *row = (Uint8 *)img->pixels + img->pitch*y;
if(reverse)
row += img->format->BytesPerPixel * img->w;
row += img->format->BytesPerPixel * (img->w-1);
for(int x = 0; x < img->w; ++x)
{
if(img->format->BitsPerPixel == 8 && img->format->colorkey != *row)
Uint32 val = decodepixel(row, img->format->BytesPerPixel);
if((img->format->BitsPerPixel == 8 && val != img->format->colorkey) ||
(img->format->BitsPerPixel != 8 && val & img->format->Amask))
{
/* This color isn't the color key, so grab it. */
r = img->format->palette->colors[*row].r;
g = img->format->palette->colors[*row].g;
b = img->format->palette->colors[*row].b;
/* This color isn't fully transparent, so grab it. */
SDL_GetRGB(val, img->format, &r, &g, &b);
return;
} else {
Uint32 val = decodepixel(row, img->format->BytesPerPixel);
if(val & img->format->Amask)
{
/* This color isn't fully transparent, so grab it. */
SDL_GetRGB(val, img->format, &r, &g, &b);
return;
}
}
if(reverse)
@@ -281,7 +272,7 @@ static void FindAlphaRGB(SDL_Surface *img, Uint8 &r, Uint8 &g, Uint8 &b, bool re
/* Set the underlying RGB values of all pixels in 'img' that are
* completely transparent. */
static void SetAlphaRGB(SDL_Surface *img, Uint8 r, Uint8 g, Uint8 b)
static void SetAlphaRGB(const SDL_Surface *img, Uint8 r, Uint8 g, Uint8 b)
{
/* If it's a paletted surface, all we have to do is change the
* colorkey, if any. */