diff options
Diffstat (limited to 'mesalib/src/glsl/link_uniforms.cpp')
| -rw-r--r-- | mesalib/src/glsl/link_uniforms.cpp | 30 |
1 files changed, 26 insertions, 4 deletions
diff --git a/mesalib/src/glsl/link_uniforms.cpp b/mesalib/src/glsl/link_uniforms.cpp index 7c3d74b82..27694b3f3 100644 --- a/mesalib/src/glsl/link_uniforms.cpp +++ b/mesalib/src/glsl/link_uniforms.cpp @@ -224,14 +224,24 @@ public: } void set_and_process(struct gl_shader_program *prog, + struct gl_shader *shader, ir_variable *var) { ubo_var = NULL; if (var->uniform_block != -1) { struct gl_uniform_block *block = - &prog->UniformBlocks[var->uniform_block]; + &shader->UniformBlocks[var->uniform_block]; + + ubo_block_index = -1; + for (unsigned i = 0; i < prog->NumUniformBlocks; i++) { + if (!strcmp(prog->UniformBlocks[i].Name, + shader->UniformBlocks[var->uniform_block].Name)) { + ubo_block_index = i; + break; + } + } + assert(ubo_block_index != -1); - ubo_block_index = var->uniform_block; ubo_var_index = var->location; ubo_var = &block->Uniforms[var->location]; ubo_byte_offset = ubo_var->Offset; @@ -490,7 +500,19 @@ link_assign_uniform_block_offsets(struct gl_shader *shader) ubo_var->Offset = offset; offset += size; } - block->UniformBufferSize = offset; + + /* From the GL_ARB_uniform_buffer_object spec: + * + * "For uniform blocks laid out according to [std140] rules, + * the minimum buffer object size returned by the + * UNIFORM_BLOCK_DATA_SIZE query is derived by taking the + * offset of the last basic machine unit consumed by the + * last uniform of the uniform block (including any + * end-of-array or end-of-structure padding), adding one, + * and rounding up to the next multiple of the base + * alignment required for a vec4." + */ + block->UniformBufferSize = align(offset, 16); } } @@ -598,7 +620,7 @@ link_assign_uniform_locations(struct gl_shader_program *prog) if (strncmp("gl_", var->name, 3) == 0) continue; - parcel.set_and_process(prog, var); + parcel.set_and_process(prog, prog->_LinkedShaders[i], var); } prog->_LinkedShaders[i]->active_samplers = parcel.shader_samplers_used; |