diff options
Diffstat (limited to 'mesalib/src/glsl/linker.cpp')
| -rw-r--r-- | mesalib/src/glsl/linker.cpp | 25 |
1 files changed, 18 insertions, 7 deletions
diff --git a/mesalib/src/glsl/linker.cpp b/mesalib/src/glsl/linker.cpp index 57be4931d..7689198b0 100644 --- a/mesalib/src/glsl/linker.cpp +++ b/mesalib/src/glsl/linker.cpp @@ -559,14 +559,21 @@ validate_vertex_shader_executable(struct gl_shader_program *prog, * vertex processing has occurred. Its value is undefined if * the vertex shader executable does not write gl_Position." * - * GLSL ES 3.00 is similar to GLSL 1.40--failing to write to gl_Position is - * not an error. + * All GLSL ES Versions are similar to GLSL 1.40--failing to write to + * gl_Position is not an error. */ if (prog->Version < (prog->IsES ? 300 : 140)) { find_assignment_visitor find("gl_Position"); find.run(shader->ir); if (!find.variable_found()) { - linker_error(prog, "vertex shader does not write to `gl_Position'\n"); + if (prog->IsES) { + linker_warning(prog, + "vertex shader does not write to `gl_Position'." + "It's value is undefined. \n"); + } else { + linker_error(prog, + "vertex shader does not write to `gl_Position'. \n"); + } return; } } @@ -1115,8 +1122,8 @@ move_non_declarations(exec_list *instructions, exec_node *last, /** * Get the function signature for main from a shader */ -static ir_function_signature * -get_main_function_signature(gl_shader *sh) +ir_function_signature * +link_get_main_function_signature(gl_shader *sh) { ir_function *const f = sh->symbols->get_function("main"); if (f != NULL) { @@ -1644,7 +1651,7 @@ link_intrastage_shaders(void *mem_ctx, */ gl_shader *main = NULL; for (unsigned i = 0; i < num_shaders; i++) { - if (get_main_function_signature(shader_list[i]) != NULL) { + if (link_get_main_function_signature(shader_list[i]) != NULL) { main = shader_list[i]; break; } @@ -1673,7 +1680,8 @@ link_intrastage_shaders(void *mem_ctx, /* The a pointer to the main function in the final linked shader (i.e., the * copy of the original shader that contained the main function). */ - ir_function_signature *const main_sig = get_main_function_signature(linked); + ir_function_signature *const main_sig = + link_get_main_function_signature(linked); /* Move any instructions other than variable declarations or function * declarations into main. @@ -1736,6 +1744,9 @@ link_intrastage_shaders(void *mem_ctx, } } + if (ctx->Const.VertexID_is_zero_based) + lower_vertex_id(linked); + /* Make a pass over all variable declarations to ensure that arrays with * unspecified sizes have a size specified. The size is inferred from the * max_array_access field. |