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gallium: use a default texture in update_textures(), update_samplers() when needed

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The default texture is used when the current fragment shader has texture
sample instructions but the user has not provided/bound a texture.
This commit is contained in:
Brian Paul
2008-08-14 15:38:09 -06:00
parent 6c46b49d12
commit 8f6d9e12be
6 changed files with 83 additions and 16 deletions
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36
src/mesa/state_tracker/st_atom_texture.c
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@@ -49,6 +49,8 @@ update_textures(struct st_context *st)
st->state.num_textures = 0;
/*printf("%s samplers used = 0x%x\n", __FUNCTION__, fprog->Base.SamplersUsed);*/
for (su = 0; su < st->ctx->Const.MaxTextureCoordUnits; su++) {
struct pipe_texture *pt = NULL;
@@ -56,24 +58,34 @@ update_textures(struct st_context *st)
const GLuint texUnit = fprog->Base.SamplerUnits[su];
struct gl_texture_object *texObj
= st->ctx->Texture.Unit[texUnit]._Current;
struct st_texture_object *stObj = st_texture_object(texObj);
struct st_texture_object *stObj;
GLboolean flush, retval;
if (texObj) {
GLboolean flush, retval;
retval = st_finalize_texture(st->ctx, st->pipe, texObj, &flush);
if (!retval) {
/* out of mem */
/* missing texture */
continue;
}
st->state.num_textures = su + 1;
if (!texObj) {
texObj = st_get_default_texture(st);
}
stObj = st_texture_object(texObj);
retval = st_finalize_texture(st->ctx, st->pipe, texObj, &flush);
if (!retval) {
/* out of mem */
continue;
}
st->state.num_textures = su + 1;
pt = st_get_stobj_texture(stObj);
}
/*
if (pt) {
printf("%s su=%u non-null\n", __FUNCTION__, su);
}
else {
printf("%s su=%u null\n", __FUNCTION__, su);
}
*/
pipe_texture_reference(&st->state.sampler_texture[su], pt);
}