[Mesa-dev] [PATCH] glsl: relax input->output validation for SSO programs

[Tapani Pälli]

Commit 18004c3 introduced more restrictive validation to linker
between inputs and outputs. This patch skips the additional check
for programs that utilize GL_ARB_separate_shader_objects, there
inputs and outputs might not make exact match during linking but
only when constructing the final pipeline.

This made some of the GL_ARB_program_interface_query tests shaders
fail to link, these tests can be used to verify the change.

Signed-off-by: Tapani Pälli <tapani.palli at intel.com>
---
 src/glsl/link_varyings.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/glsl/link_varyings.cpp b/src/glsl/link_varyings.cpp
index d6fb1ea..605748a 100644
--- a/src/glsl/link_varyings.cpp
+++ b/src/glsl/link_varyings.cpp
@@ -270,7 +270,7 @@ cross_validate_outputs_to_inputs(struct gl_shader_program *prog,
              */
             assert(!input->data.assigned);
             if (input->data.used && !input->get_interface_type() &&
-                !input->data.explicit_location)
+                !input->data.explicit_location && !prog->SeparateShader)
                linker_error(prog,
                             "%s shader input `%s' "
                             "has no matching output in the previous stage\n",
-- 
2.1.0