glsl/cs: Initialize gl_GlobalInvocationID in main()

We initialize gl_GlobalInvocationID based on the extension spec
formula:

    gl_GlobalInvocationID =
        gl_WorkGroupID * gl_WorkGroupSize + gl_LocalInvocationID

https://www.opengl.org/registry/specs/ARB/compute_shader.txt

Signed-off-by: Jordan Justen <[email protected]>
Cc: Ilia Mirkin <[email protected]>
Reviewed-by: Tapani Pälli <[email protected]>

1 files changed, 2 insertions, 0 deletions

diff --git a/src/glsl/glsl_parser_extras.cpp b/src/glsl/glsl_parser_extras.cpp
index fb76614133d..dae5261daca 100644
--- a/src/glsl/glsl_parser_extras.cpp
+++ b/src/glsl/glsl_parser_extras.cpp
@@ -1694,6 +1694,8 @@ _mesa_glsl_compile_shader(struct gl_context *ctx, struct gl_shader *shader,
       }
    }
 
+   _mesa_glsl_initialize_derived_variables(shader);
+
    delete state->symbols;
    ralloc_free(state);
 }