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fix a really obscure artifact

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This commit is contained in:
Glenn Maynard
2003-01-26 02:35:55 +00:00
parent f9071c48e8
commit 2bfe7254fd
1 changed files with 39 additions and 34 deletions
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stepmania/src/RageBitmapTexture.cpp
+39 -34
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@@ -287,9 +287,43 @@ void RageBitmapTexture::Create()
int pixfmt = desired_rgba_pixfmt;
retry:
if(img->format->BitsPerPixel == 8 && DISPLAY->GetSpecs().EXT_paletted_texture)
pixfmt = FMT_PAL;
if(pixfmt != FMT_PAL)
{
/* It's either not a paletted image, or we can't handle paletted textures.
* Convert to the desired RGBA format, dithering if appropriate. */
/* Never dither when the target is 32bpp; there's no point. */
if( PixFmtMasks[pixfmt].bpp == 32)
m_ActualID.bDither = false;
if( m_ActualID.bDither )
{
/* Dither down to the destination format. */
SDL_Surface *dst = SDL_CreateRGBSurfaceSane(SDL_SWSURFACE, img->w, img->h, PixFmtMasks[pixfmt].bpp,
PixFmtMasks[pixfmt].masks[0], PixFmtMasks[pixfmt].masks[1],
PixFmtMasks[pixfmt].masks[2], PixFmtMasks[pixfmt].masks[3]);
SM_SDL_OrderedDither(img, dst);
SDL_FreeSurface(img);
img = dst;
}
}
/* Convert the data to the destination format if it's not in it already. */
ConvertSDLSurface(img, m_iTextureWidth, m_iTextureHeight, PixFmtMasks[pixfmt].bpp,
PixFmtMasks[pixfmt].masks[0], PixFmtMasks[pixfmt].masks[1],
PixFmtMasks[pixfmt].masks[2], PixFmtMasks[pixfmt].masks[3]);
/* This needs to be done *after* the final resize, since that resize
* may introduce new alpha bits that need to be set. It needs to be
* done *before* we set up the palette, since it might change it. */
FixHiddenAlpha(img);
if(img->format->BitsPerPixel == 8 && DISPLAY->GetSpecs().EXT_paletted_texture)
if(pixfmt == FMT_PAL)
{
/* The image is currently paletted. Let's try to set up a paletted texture. */
GLubyte palette[256*4];
@@ -314,45 +348,16 @@ void RageBitmapTexture::Create()
int RealFormat = 0;
glGetColorTableParameterivEXT(GL_TEXTURE_2D, GL_COLOR_TABLE_FORMAT_EXT, &RealFormat);
if(RealFormat == GL_RGBA8)
if(RealFormat != GL_RGBA8)
{
/* Good, the color table is what we asked for. Use a paletted texture format. */
pixfmt = FMT_PAL;
} else {
/* This is another case I don't expect to happen; if it does, log,
/* This is a case I don't expect to happen; if it does, log,
* turn off PT's permanently and continue as an RGBA texture. */
LOG->Info("Expected an RGBA8 palette, got %i instead; disabling paletted textures", RealFormat);
DISPLAY->DisablePalettedTexture();
pixfmt = desired_rgba_pixfmt;
goto retry;
}
}
retry:
if(pixfmt != FMT_PAL)
{
/* It's either not a paletted image, or we can't handle paletted images.
* Convert to the desired RGBA format, dithering if appropriate. */
/* Never dither when the target is 32bpp; there's no point. */
if( PixFmtMasks[pixfmt].bpp == 32)
m_ActualID.bDither = false;
if( m_ActualID.bDither )
{
/* Dither down to the destination format. */
SDL_Surface *dst = SDL_CreateRGBSurfaceSane(SDL_SWSURFACE, img->w, img->h, PixFmtMasks[pixfmt].bpp,
PixFmtMasks[pixfmt].masks[0], PixFmtMasks[pixfmt].masks[1],
PixFmtMasks[pixfmt].masks[2], PixFmtMasks[pixfmt].masks[3]);
SM_SDL_OrderedDither(img, dst);
SDL_FreeSurface(img);
img = dst;
}
}
/* Convert the data to the destination format if it's not in it already. */
ConvertSDLSurface(img, m_iTextureWidth, m_iTextureHeight, PixFmtMasks[pixfmt].bpp,
PixFmtMasks[pixfmt].masks[0], PixFmtMasks[pixfmt].masks[1],
PixFmtMasks[pixfmt].masks[2], PixFmtMasks[pixfmt].masks[3]);
glPixelStorei(GL_UNPACK_ROW_LENGTH, img->pitch / img->format->BytesPerPixel);
glTexImage2D(GL_TEXTURE_2D, 0, PixFmtMasks[pixfmt].internalfmt,