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mesa: added _mesa_get_format_bits()

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This commit is contained in:
Brian Paul 2009-09-27 19:07:44 -06:00
parent a608257a02
commit c28d78f832
2 changed files with 35 additions and 0 deletions
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31
src/mesa/main/formats.c
View file

@ -24,6 +24,7 @@
*/
#include "imports.h"
#include "formats.h"
#include "config.h"
#include "texstore.h"
@ -785,3 +786,33 @@ _mesa_format_to_type_and_comps2(gl_format format,
}
}
GLint
_mesa_get_format_bits(gl_format format, GLenum pname)
{
const struct gl_format_info *info = _mesa_get_format_info(format);
switch (pname) {
case GL_TEXTURE_RED_SIZE:
return info->RedBits;
case GL_TEXTURE_GREEN_SIZE:
return info->GreenBits;
case GL_TEXTURE_BLUE_SIZE:
return info->BlueBits;
case GL_TEXTURE_ALPHA_SIZE:
return info->AlphaBits;
case GL_TEXTURE_INTENSITY_SIZE:
return info->IntensityBits;
case GL_TEXTURE_LUMINANCE_SIZE:
return info->LuminanceBits;
case GL_TEXTURE_INDEX_SIZE_EXT:
return info->IndexBits;
case GL_TEXTURE_DEPTH_SIZE_ARB:
return info->DepthBits;
case GL_TEXTURE_STENCIL_SIZE_EXT:
return info->StencilBits;
default:
_mesa_problem(NULL, "bad pname in _mesa_get_format_bits()");
return 0;
}
}

4
src/mesa/main/formats.h
View file

@ -208,6 +208,10 @@ extern void
_mesa_format_to_type_and_comps2(gl_format format,
GLenum *datatype, GLuint *comps);
extern GLint
_mesa_get_format_bits(gl_format format, GLenum pname);
extern void
_mesa_test_formats(void);