From 936dda08ee6d7b2be2b016bc06780e401088ec13 Mon Sep 17 00:00:00 2001 From: Chris Forbes Date: Sat, 12 Apr 2014 21:20:43 +1200 Subject: [PATCH] mesa: Consider gl_VertexID and gl_InstanceID active attribs Fixes piglit's spec/gl-3.2/get-active-attrib-returns-all-inputs. Signed-off-by: Chris Forbes Reviewed-by: Kenneth Graunke --- src/mesa/main/shader_query.cpp | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/src/mesa/main/shader_query.cpp b/src/mesa/main/shader_query.cpp index 1c3c8e9..f66c117 100644 --- a/src/mesa/main/shader_query.cpp +++ b/src/mesa/main/shader_query.cpp @@ -86,6 +86,15 @@ is_active_attrib(const ir_variable *var) case ir_var_shader_in: return var->data.location != -1; + case ir_var_system_value: + /* From GL 4.3 core spec, section 11.1.1 (Vertex Attributes): + * "For GetActiveAttrib, all active vertex shader input variables + * are enumerated, including the special built-in inputs gl_VertexID + * and gl_InstanceID." + */ + return !strcmp(var->name, "gl_VertexID") || + !strcmp(var->name, "gl_InstanceID"); + default: return false; } -- 2.7.4