diff options
author | Brian <[email protected]> | 2007-10-26 19:19:09 -0600 |
---|---|---|
committer | Brian <[email protected]> | 2007-10-26 19:19:51 -0600 |
commit | 8fed2466e4056668a76a87cf935b5fbff8ae15ca (patch) | |
tree | 81345e5b5ee66dc2dd299f5b9ce29314f2e52735 /src/mesa/state_tracker | |
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/state_tracker')
-rw-r--r-- | src/mesa/state_tracker/st_atom_sampler.c | 33 |
1 files changed, 32 insertions, 1 deletions
diff --git a/src/mesa/state_tracker/st_atom_sampler.c b/src/mesa/state_tracker/st_atom_sampler.c index 38de35933e8..80b8cae013e 100644 --- a/src/mesa/state_tracker/st_atom_sampler.c +++ b/src/mesa/state_tracker/st_atom_sampler.c @@ -113,6 +113,23 @@ gl_filter_to_img_filter(GLenum filter) } +static struct gl_fragment_program * +current_fragment_program(GLcontext *ctx) +{ + struct gl_fragment_program *f; + + if (ctx->Shader.CurrentProgram && + ctx->Shader.CurrentProgram->LinkStatus && + ctx->Shader.CurrentProgram->FragmentProgram) { + f = ctx->Shader.CurrentProgram->FragmentProgram; + } + else { + f = ctx->FragmentProgram._Current; + assert(f); + } + return f; +} + static void update_samplers(struct st_context *st) @@ -165,13 +182,27 @@ update_samplers(struct st_context *st) st->pipe->bind_sampler_state(st->pipe, u, cso->data); } } + + + /* mapping from sampler vars to texture units */ + { + struct gl_fragment_program *fprog = current_fragment_program(st->ctx); + const GLubyte *samplerUnits = fprog->Base.SamplerUnits; + uint sample_units[PIPE_MAX_SAMPLERS]; + uint s; + for (s = 0; s < PIPE_MAX_SAMPLERS; s++) { + sample_units[s] = fprog->Base.SamplerUnits[s]; + } + + st->pipe->set_sampler_units(st->pipe, PIPE_MAX_SAMPLERS, sample_units); + } } const struct st_tracked_state st_update_sampler = { .name = "st_update_sampler", .dirty = { - .mesa = _NEW_TEXTURE, + .mesa = _NEW_TEXTURE | _NEW_PROGRAM, .st = 0, }, .update = update_samplers |