Signed-off-by: Jordan Justen <jordan.l.jus...@intel.com>
---
src/glsl/builtin_variables.cpp | 2 ++
src/mesa/main/mtypes.h | 1 +
2 files changed, 3 insertions(+)
diff --git a/src/glsl/builtin_variables.cpp b/src/glsl/builtin_variables.cpp
index d6bc3c0..d9ed2db 100644
--- a/src/glsl/builtin_variables.cpp
+++ b/src/glsl/builtin_variables.cpp
@@ -782,6 +782,8 @@ builtin_variable_generator::generate_gs_special_vars()
add_output(VARYING_SLOT_LAYER, int_t, "gl_Layer");
if (state->ARB_viewport_array_enable)
add_output(VARYING_SLOT_VIEWPORT, int_t, "gl_ViewportIndex");
+ if (state->ARB_gpu_shader5_enable)
+ add_system_value(SYSTEM_VALUE_INVOCATION_ID, int_t, "gl_InvocationID");
/* Although gl_PrimitiveID appears in tessellation control and tessellation
* evaluation shaders, it has a different function there than it has in
diff --git a/src/mesa/main/mtypes.h b/src/mesa/main/mtypes.h
index 2131fed..eff268c 100644
--- a/src/mesa/main/mtypes.h
+++ b/src/mesa/main/mtypes.h
@@ -2008,6 +2008,7 @@ typedef enum
SYSTEM_VALUE_SAMPLE_ID, /**< Fragment shader only */
SYSTEM_VALUE_SAMPLE_POS, /**< Fragment shader only */
SYSTEM_VALUE_SAMPLE_MASK_IN, /**< Fragment shader only */
+ SYSTEM_VALUE_INVOCATION_ID, /**< Geometry shader only */
SYSTEM_VALUE_MAX /**< Number of values */
} gl_system_value;
--
1.8.5.3
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