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use iGrayscaleBits

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This commit is contained in:
Glenn Maynard
2003-10-08 02:23:53 +00:00
parent a73a86f63e
commit 5dc94af3da
1 changed files with 15 additions and 1 deletions
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stepmania/src/RageBitmapTexture.cpp
+15 -1
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@@ -152,6 +152,12 @@ apply_color_key:
if( HintString.Find("dither") != -1 ) actualID.bDither = true;
if( HintString.Find("stretch") != -1 ) actualID.bStretch = true;
/* No iGrayscaleBits for images that are already paletted. We don't support
* that; and that hint is intended for use on images that are already grayscale,
* it's not intended to change a color image into a grayscale image. */
if( actualID.iGrayscaleBits != -1 && img->format->BitsPerPixel == 8 )
actualID.iGrayscaleBits = -1;
/* Cap the max texture size to the hardware max. */
actualID.iMaxSize = min( actualID.iMaxSize, DISPLAY->GetMaxTextureSize() );
@@ -196,7 +202,15 @@ apply_color_key:
// Format of the image that we will pass to OpenGL and that we want OpenGL to use
RageDisplay::PixelFormat pixfmt;
if( img->format->BitsPerPixel == 8 )
if( actualID.iGrayscaleBits != -1 && DISPLAY->SupportsTextureFormat(RageDisplay::FMT_PAL) )
{
SDL_Surface *dst = mySDL_Palettize( img, actualID.iGrayscaleBits, actualID.iAlphaBits );
SDL_FreeSurface(img);
img = dst;
}
if( img->format->BitsPerPixel == 8 && actualID.iGrayscaleBits == -1 )
{
/* Unless we set up the palette ourself, assume the "unused" bit is undefined,
* and set it to 255. We use it for alpha. */