diff options
| author | Brian <brian.paul@tungstengraphics.com> | 2007-10-26 19:19:09 -0600 |
|---|---|---|
| committer | Brian <brian.paul@tungstengraphics.com> | 2007-10-26 19:19:51 -0600 |
| commit | 8fed2466e4056668a76a87cf935b5fbff8ae15ca (patch) | |
| tree | 81345e5b5ee66dc2dd299f5b9ce29314f2e52735 /src/mesa/shader/slang/slang_codegen.c | |
| parent | 789d248558061fe4d65f664d6770a12b90fa2e34 (diff) | |
Re-implement GLSL texture sampler variables.
GLSL sampler variables indicate which texture unit to use for TEX instructions.
Previously, this was baked into the fragment/vertex program and couldn't be
readily changed once set.
Now, SamplerUnits[] array indicates which texture unit is to be used for
each sampler variable. These values are set with glUniform1i().
This is extra state that must be passed to the fragment/vertex program
executor at runtime.
Diffstat (limited to 'src/mesa/shader/slang/slang_codegen.c')
| -rw-r--r-- | src/mesa/shader/slang/slang_codegen.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/src/mesa/shader/slang/slang_codegen.c b/src/mesa/shader/slang/slang_codegen.c index fb1f9d5a20..767ba3ffb4 100644 --- a/src/mesa/shader/slang/slang_codegen.c +++ b/src/mesa/shader/slang/slang_codegen.c @@ -2874,14 +2874,23 @@ _slang_codegen_global_variable(slang_assemble_ctx *A, slang_variable *var, const GLint texIndex = sampler_to_texture_index(var->type.specifier.type); if (texIndex != -1) { - /* Texture sampler: + /* This is a texture sampler variable... * store->File = PROGRAM_SAMPLER - * store->Index = sampler uniform location + * store->Index = sampler number (0..7, typically) * store->Size = texture type index (1D, 2D, 3D, cube, etc) */ +#if 0 GLint samplerUniform = _mesa_add_sampler(prog->Parameters, varName, datatype); - store = _slang_new_ir_storage(PROGRAM_SAMPLER, samplerUniform, texIndex); +#elif 0 + GLint samplerUniform + = _mesa_add_sampler(prog->Samplers, varName, datatype); + (void) _mesa_add_sampler(prog->Parameters, varName, datatype); /* dummy entry */ +#else + const GLint sampNum = A->numSamplers++; + _mesa_add_sampler(prog->Parameters, varName, datatype, sampNum); +#endif + store = _slang_new_ir_storage(PROGRAM_SAMPLER, sampNum, texIndex); if (dbg) printf("SAMPLER "); } else if (var->type.qualifier == SLANG_QUAL_UNIFORM) { |