[Mesa-dev] [PATCH 2/5] glsl: add support for AMD_vertex_shader_viewport_index

[Ilia Mirkin]

Signed-off-by: Ilia Mirkin <imirkin at alum.mit.edu>
Reviewed-by: Kenneth Graunke <kenneth at whitecape.org>
Tested-by: Tobias Droste <tdroste at gmx.de>
---
 src/glsl/builtin_variables.cpp  | 2 ++
 src/glsl/glcpp/glcpp-parse.y    | 3 +++
 src/glsl/glsl_parser_extras.cpp | 1 +
 src/glsl/glsl_parser_extras.h   | 2 ++
 4 files changed, 8 insertions(+)

diff --git a/src/glsl/builtin_variables.cpp b/src/glsl/builtin_variables.cpp
index 9f95716..3497302 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");
diff --git a/src/glsl/glcpp/glcpp-parse.y b/src/glsl/glcpp/glcpp-parse.y
index d8c3957..ccf8105 100644
--- a/src/glsl/glcpp/glcpp-parse.y
+++ b/src/glsl/glcpp/glcpp-parse.y
@@ -2133,6 +2133,9 @@ _glcpp_parser_handle_version_declaration(glcpp_parser_t *parser, intmax_t versio
 	      if (extensions->AMD_vertex_shader_layer)
 	         add_builtin_define(parser, "GL_AMD_vertex_shader_layer", 1);
 
+	      if (extensions->AMD_vertex_shader_viewport_index)
+	         add_builtin_define(parser, "GL_AMD_vertex_shader_viewport_index", 1);
+
 	      if (extensions->ARB_shading_language_420pack)
 	         add_builtin_define(parser, "GL_ARB_shading_language_420pack", 1);
 
diff --git a/src/glsl/glsl_parser_extras.cpp b/src/glsl/glsl_parser_extras.cpp
index 0d99339..b327c2b 100644
--- a/src/glsl/glsl_parser_extras.cpp
+++ b/src/glsl/glsl_parser_extras.cpp
@@ -552,6 +552,7 @@ static const _mesa_glsl_extension _mesa_glsl_supported_extensions[] = {
    EXT(AMD_shader_stencil_export,      true,  false,     ARB_shader_stencil_export),
    EXT(AMD_shader_trinary_minmax,      true,  false,     dummy_true),
    EXT(AMD_vertex_shader_layer,        true,  false,     AMD_vertex_shader_layer),
+   EXT(AMD_vertex_shader_viewport_index, true,  false,   AMD_vertex_shader_viewport_index),
    EXT(EXT_separate_shader_objects,    false, true,      dummy_true),
    EXT(EXT_shader_integer_mix,         true,  true,      EXT_shader_integer_mix),
    EXT(EXT_texture_array,              true,  false,     EXT_texture_array),
diff --git a/src/glsl/glsl_parser_extras.h b/src/glsl/glsl_parser_extras.h
index a0af965..1791816 100644
--- a/src/glsl/glsl_parser_extras.h
+++ b/src/glsl/glsl_parser_extras.h
@@ -461,6 +461,8 @@ struct _mesa_glsl_parse_state {
    bool AMD_shader_trinary_minmax_warn;
    bool AMD_vertex_shader_layer_enable;
    bool AMD_vertex_shader_layer_warn;
+   bool AMD_vertex_shader_viewport_index_enable;
+   bool AMD_vertex_shader_viewport_index_warn;
    bool EXT_separate_shader_objects_enable;
    bool EXT_separate_shader_objects_warn;
    bool EXT_shader_integer_mix_enable;
-- 
1.8.5.5