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mesa: initial support for unnormalized integer texture formats

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As defined by GL_EXT_texture_integer.
This commit is contained in:
Brian Paul
2010-07-05 20:07:07 -06:00
parent e54164b4e3
commit abd5627a6a
9 changed files with 1140 additions and 133 deletions
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52
src/mesa/main/teximage.c
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@@ -348,12 +348,60 @@ _mesa_base_tex_format( GLcontext *ctx, GLint internalFormat )
case GL_SLUMINANCE8_EXT:
return GL_LUMINANCE;
default:
; /* fallthrough */
; /* fallthrough */
}
}
#endif /* FEATURE_EXT_texture_sRGB */
if (ctx->Extensions.EXT_texture_integer) {
switch (internalFormat) {
case GL_RGBA8UI_EXT:
case GL_RGBA16UI_EXT:
case GL_RGBA32UI_EXT:
case GL_RGBA8I_EXT:
case GL_RGBA16I_EXT:
case GL_RGBA32I_EXT:
return GL_RGBA;
case GL_RGB8UI_EXT:
case GL_RGB16UI_EXT:
case GL_RGB32UI_EXT:
case GL_RGB8I_EXT:
case GL_RGB16I_EXT:
case GL_RGB32I_EXT:
return GL_RGB;
case GL_ALPHA8UI_EXT:
case GL_ALPHA16UI_EXT:
case GL_ALPHA32UI_EXT:
case GL_ALPHA8I_EXT:
case GL_ALPHA16I_EXT:
case GL_ALPHA32I_EXT:
return GL_ALPHA;
case GL_INTENSITY8UI_EXT:
case GL_INTENSITY16UI_EXT:
case GL_INTENSITY32UI_EXT:
case GL_INTENSITY8I_EXT:
case GL_INTENSITY16I_EXT:
case GL_INTENSITY32I_EXT:
return GL_INTENSITY;
case GL_LUMINANCE8UI_EXT:
case GL_LUMINANCE16UI_EXT:
case GL_LUMINANCE32UI_EXT:
case GL_LUMINANCE8I_EXT:
case GL_LUMINANCE16I_EXT:
case GL_LUMINANCE32I_EXT:
return GL_LUMINANCE;
case GL_LUMINANCE_ALPHA8UI_EXT:
case GL_LUMINANCE_ALPHA16UI_EXT:
case GL_LUMINANCE_ALPHA32UI_EXT:
case GL_LUMINANCE_ALPHA8I_EXT:
case GL_LUMINANCE_ALPHA16I_EXT:
case GL_LUMINANCE_ALPHA32I_EXT:
return GL_LUMINANCE_ALPHA;
default:
; /* fallthrough */
}
}
return -1; /* error */
}