From df61553070319660bd6a74f1ae6b251700dd17db Mon Sep 17 00:00:00 2001
From: Ilia Mirkin <imirkin@alum.mit.edu>
Date: Wed, 2 Jul 2014 12:12:51 -0400
Subject: glsl: add support for AMD_vertex_shader_viewport_index

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Chris Forbes <chrisf@ijw.co.nz>
Tested-by: Tobias Droste <tdroste@gmx.de>
---
 src/glsl/builtin_variables.cpp | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'src/glsl/builtin_variables.cpp')

diff --git a/src/glsl/builtin_variables.cpp b/src/glsl/builtin_variables.cpp
index 9f9571619ba..34973023fe9 100644
--- a/src/glsl/builtin_variables.cpp
+++ b/src/glsl/builtin_variables.cpp
@@ -815,6 +815,8 @@ builtin_variable_generator::generate_vs_special_vars()
       add_system_value(SYSTEM_VALUE_INSTANCE_ID, int_t, "gl_InstanceID");
    if (state->AMD_vertex_shader_layer_enable)
       add_output(VARYING_SLOT_LAYER, int_t, "gl_Layer");
+   if (state->AMD_vertex_shader_viewport_index_enable)
+      add_output(VARYING_SLOT_VIEWPORT, int_t, "gl_ViewportIndex");
    if (compatibility) {
       add_input(VERT_ATTRIB_POS, vec4_t, "gl_Vertex");
       add_input(VERT_ATTRIB_NORMAL, vec3_t, "gl_Normal");
-- 
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