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st/mesa: optimize sampler state translation code 

Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
This commit is contained in:
Marek Olšák 2017-06-10 22:34:34 +02:00
parent 39ab9fb36c
commit 222a910a9b
1 changed files with 20 additions and 48 deletions
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68
src/mesa/state_tracker/st_atom_sampler.c
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@ -58,71 +58,43 @@
static GLuint
gl_wrap_xlate(GLenum wrap)
{
switch (wrap) {
case GL_REPEAT:
return PIPE_TEX_WRAP_REPEAT;
case GL_CLAMP:
return PIPE_TEX_WRAP_CLAMP;
case GL_CLAMP_TO_EDGE:
return PIPE_TEX_WRAP_CLAMP_TO_EDGE;
case GL_CLAMP_TO_BORDER:
return PIPE_TEX_WRAP_CLAMP_TO_BORDER;
case GL_MIRRORED_REPEAT:
return PIPE_TEX_WRAP_MIRROR_REPEAT;
case GL_MIRROR_CLAMP_EXT:
return PIPE_TEX_WRAP_MIRROR_CLAMP;
case GL_MIRROR_CLAMP_TO_EDGE_EXT:
return PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE;
case GL_MIRROR_CLAMP_TO_BORDER_EXT:
return PIPE_TEX_WRAP_MIRROR_CLAMP_TO_BORDER;
default:
assert(0);
return 0;
}
/* Take advantage of how the enums are defined. */
static const unsigned table[32] = {
[GL_REPEAT & 0x1f] = PIPE_TEX_WRAP_REPEAT,
[GL_CLAMP & 0x1f] = PIPE_TEX_WRAP_CLAMP,
[GL_CLAMP_TO_EDGE & 0x1f] = PIPE_TEX_WRAP_CLAMP_TO_EDGE,
[GL_CLAMP_TO_BORDER & 0x1f] = PIPE_TEX_WRAP_CLAMP_TO_BORDER,
[GL_MIRRORED_REPEAT & 0x1f] = PIPE_TEX_WRAP_MIRROR_REPEAT,
[GL_MIRROR_CLAMP_EXT & 0x1f] = PIPE_TEX_WRAP_MIRROR_CLAMP,
[GL_MIRROR_CLAMP_TO_EDGE & 0x1f] = PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE,
[GL_MIRROR_CLAMP_TO_BORDER_EXT & 0x1f] = PIPE_TEX_WRAP_MIRROR_CLAMP_TO_BORDER,
};
return table[wrap & 0x1f];
}
static GLuint
gl_filter_to_mip_filter(GLenum filter)
{
switch (filter) {
case GL_NEAREST:
case GL_LINEAR:
/* Take advantage of how the enums are defined. */
if (filter <= GL_LINEAR)
return PIPE_TEX_MIPFILTER_NONE;
case GL_NEAREST_MIPMAP_NEAREST:
case GL_LINEAR_MIPMAP_NEAREST:
if (filter <= GL_LINEAR_MIPMAP_NEAREST)
return PIPE_TEX_MIPFILTER_NEAREST;
case GL_NEAREST_MIPMAP_LINEAR:
case GL_LINEAR_MIPMAP_LINEAR:
return PIPE_TEX_MIPFILTER_LINEAR;
default:
assert(0);
return PIPE_TEX_MIPFILTER_NONE;
}
return PIPE_TEX_MIPFILTER_LINEAR;
}
static GLuint
gl_filter_to_img_filter(GLenum filter)
{
switch (filter) {
case GL_NEAREST:
case GL_NEAREST_MIPMAP_NEAREST:
case GL_NEAREST_MIPMAP_LINEAR:
return PIPE_TEX_FILTER_NEAREST;
case GL_LINEAR:
case GL_LINEAR_MIPMAP_NEAREST:
case GL_LINEAR_MIPMAP_LINEAR:
/* Take advantage of how the enums are defined. */
if (filter & 1)
return PIPE_TEX_FILTER_LINEAR;
default:
assert(0);
return PIPE_TEX_FILTER_NEAREST;
}
return PIPE_TEX_FILTER_NEAREST;
}