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st: as with swrast, interpret texture border color according to texture format

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Depending on the hardware driver this might not be needed, but it will
cause no harm.
This commit is contained in:
Brian Paul 2009-04-06 14:06:08 -06:00
parent a07e68df68
commit 89276e2aaf
1 changed files with 37 additions and 4 deletions
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41
src/mesa/state_tracker/st_atom_sampler.c
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@ -118,6 +118,37 @@ gl_filter_to_img_filter(GLenum filter)
}
static void
xlate_border_color(const GLfloat *colorIn, GLenum baseFormat, GLfloat *colorOut)
{
switch (baseFormat) {
case GL_RGB:
colorOut[0] = colorIn[0];
colorOut[1] = colorIn[1];
colorOut[2] = colorIn[2];
colorOut[3] = 1.0F;
break;
case GL_ALPHA:
colorOut[0] = colorOut[1] = colorOut[2] = 0.0;
colorOut[3] = colorIn[3];
break;
case GL_LUMINANCE:
colorOut[0] = colorOut[1] = colorOut[2] = colorIn[0];
colorOut[3] = 1.0;
break;
case GL_LUMINANCE_ALPHA:
colorOut[0] = colorOut[1] = colorOut[2] = colorIn[0];
colorOut[3] = colorIn[3];
break;
case GL_INTENSITY:
colorOut[0] = colorOut[1] = colorOut[2] = colorOut[3] = colorIn[0];
break;
default:
COPY_4V(colorOut, colorIn);
}
}
static void
update_samplers(struct st_context *st)
{
@ -137,6 +168,7 @@ update_samplers(struct st_context *st)
if (samplersUsed & (1 << su)) {
struct gl_texture_object *texobj;
struct gl_texture_image *teximg;
GLuint texUnit;
if (fprog->Base.SamplersUsed & (1 << su))
@ -149,6 +181,8 @@ update_samplers(struct st_context *st)
texobj = st_get_default_texture(st);
}
teximg = texobj->Image[0][texobj->BaseLevel];
sampler->wrap_s = gl_wrap_xlate(texobj->WrapS);
sampler->wrap_t = gl_wrap_xlate(texobj->WrapT);
sampler->wrap_r = gl_wrap_xlate(texobj->WrapR);
@ -174,10 +208,9 @@ update_samplers(struct st_context *st)
assert(sampler->min_lod <= sampler->max_lod);
}
sampler->border_color[0] = texobj->BorderColor[RCOMP];
sampler->border_color[1] = texobj->BorderColor[GCOMP];
sampler->border_color[2] = texobj->BorderColor[BCOMP];
sampler->border_color[3] = texobj->BorderColor[ACOMP];
xlate_border_color(texobj->BorderColor,
teximg ? teximg->TexFormat->BaseFormat : GL_RGBA,
sampler->border_color);
sampler->max_anisotropy = texobj->MaxAnisotropy;
if (sampler->max_anisotropy > 1.0) {