Patch fixes special cases with gl_VertexID and sets all builtin
variables locations as '-1' as specified by the extension spec.
Fixes ES 3.1 conformance test failure:
ES31-CTS.program_interface_query.input-built-in
Signed-off-by: Tapani Pälli <tapani.pa...@intel.com>
---
src/mesa/main/shader_query.cpp | 22 +++++++++++++++++++++-
1 file changed, 21 insertions(+), 1 deletion(-)
diff --git a/src/mesa/main/shader_query.cpp b/src/mesa/main/shader_query.cpp
index 3445f89..7d7cb73 100644
--- a/src/mesa/main/shader_query.cpp
+++ b/src/mesa/main/shader_query.cpp
@@ -479,12 +479,19 @@ _mesa_GetFragDataLocation(GLuint program, const GLchar
*name)
const char*
_mesa_program_resource_name(struct gl_program_resource *res)
{
+ const ir_variable *var;
switch (res->Type) {
case GL_UNIFORM_BLOCK:
return RESOURCE_UBO(res)->Name;
case GL_TRANSFORM_FEEDBACK_VARYING:
return RESOURCE_XFB(res)->Name;
case GL_PROGRAM_INPUT:
+ var = RESOURCE_VAR(res);
+ if (var->data.mode == ir_var_system_value &&
+ var->data.location == SYSTEM_VALUE_VERTEX_ID_ZERO_BASE) {
+ return "gl_VertexID";
+ }
+ /* fallthrough */
case GL_PROGRAM_OUTPUT:
return RESOURCE_VAR(res)->name;
case GL_UNIFORM:
@@ -539,6 +546,15 @@ struct gl_program_resource *
_mesa_program_resource_find_name(struct gl_shader_program *shProg,
GLenum programInterface, const char *name)
{
+ GET_CURRENT_CONTEXT(ctx);
+ const char *full_name = name;
+
+ /* Special case gl_VertexID -> gl_VertexIDMESA. */
+ if (name && ctx->Const.VertexID_is_zero_based) {
+ if (strcmp(name, "gl_VertexID") == 0)
+ full_name = "gl_VertexIDMESA";
+ }
+
struct gl_program_resource *res = shProg->ProgramResourceList;
for (unsigned i = 0; i < shProg->NumProgramResourceList; i++, res++) {
if (res->Type != programInterface)
@@ -563,7 +579,7 @@ _mesa_program_resource_find_name(struct gl_shader_program
*shProg,
break;
case GL_PROGRAM_INPUT:
case GL_PROGRAM_OUTPUT:
- if (array_index_of_resource(res, name) >= 0)
+ if (array_index_of_resource(res, full_name) >= 0)
return res;
break;
default:
@@ -728,6 +744,10 @@ program_resource_location(struct gl_shader_program *shProg,
return -1;
}
+ /* Built-in locations should report GL_INVALID_INDEX. */
+ if (strncmp(name, "gl_", 3) == 0)
+ return GL_INVALID_INDEX;
+
/* VERT_ATTRIB_GENERIC0 and FRAG_RESULT_DATA0 are decremented as these
* offsets are used internally to differentiate between built-in attributes
* and user-defined attributes.
--
2.1.0
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