--- src/glsl/link_uniforms.cpp | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+)
diff --git a/src/glsl/link_uniforms.cpp b/src/glsl/link_uniforms.cpp index 5780bb2..0aa66d3 100644 --- a/src/glsl/link_uniforms.cpp +++ b/src/glsl/link_uniforms.cpp @@ -751,6 +751,40 @@ link_assign_uniform_block_offsets(struct gl_shader *shader) } } +/** + * Scan the program for image uniforms and store image unit access + * information into the gl_shader data structure. + */ +static void +link_set_image_access_qualifiers(struct gl_shader_program *prog) +{ + for (unsigned i = 0; i < MESA_SHADER_TYPES; i++) { + gl_shader *sh = prog->_LinkedShaders[i]; + + if (sh == NULL) + continue; + + foreach_list(node, sh->ir) { + ir_variable *var = ((ir_instruction *) node)->as_variable(); + + if (var && var->mode == ir_var_uniform && + var->type->contains_image()) { + unsigned id; + bool found = prog->UniformHash->get(id, var->name); + assert(found); + const gl_uniform_storage *storage = &prog->UniformStorage[id]; + const unsigned index = storage->image[i].index; + const GLenum access = (var->image.read_only ? GL_READ_ONLY : + var->image.write_only ? GL_WRITE_ONLY : + GL_READ_WRITE); + + for (unsigned j = 0; j < MAX2(1, storage->array_elements); ++j) + sh->ImageAccess[index + j] = access; + } + } + } +} + void link_assign_uniform_locations(struct gl_shader_program *prog) { @@ -895,6 +929,7 @@ link_assign_uniform_locations(struct gl_shader_program *prog) prog->NumUserUniformStorage = num_user_uniforms; prog->UniformStorage = uniforms; + link_set_image_access_qualifiers(prog); link_set_uniform_initializers(prog); return; -- 1.8.3.4 _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev