[Mesa-dev] [PATCH 1/8] mesa: Add infrastructure for GL_ARB_sample_shading

[Anuj Phogat]

This patch implements the common support code required for the
GL_ARB_sample_shading extension.

Signed-off-by: Anuj Phogat <anuj.phogat at gmail.com>
---
 src/glsl/glcpp/glcpp-parse.y        | 3 +++
 src/glsl/glsl_parser_extras.cpp     | 1 +
 src/glsl/glsl_parser_extras.h       | 2 ++
 src/glsl/standalone_scaffolding.cpp | 1 +
 src/mesa/main/extensions.c          | 1 +
 src/mesa/main/mtypes.h              | 1 +
 6 files changed, 9 insertions(+)

diff --git a/src/glsl/glcpp/glcpp-parse.y b/src/glsl/glcpp/glcpp-parse.y
index 02100ab..5141bdd 100644
--- a/src/glsl/glcpp/glcpp-parse.y
+++ b/src/glsl/glcpp/glcpp-parse.y
@@ -1249,6 +1249,9 @@ glcpp_parser_create (const struct gl_extensions *extensions, int api)
 	      if (extensions->ARB_shading_language_420pack)
 	         add_builtin_define(parser, "GL_ARB_shading_language_420pack", 1);
 
+	      if (extensions->ARB_sample_shading)
+	         add_builtin_define(parser, "GL_ARB_sample_shading", 1);
+
 	      if (extensions->EXT_shader_integer_mix)
 	         add_builtin_define(parser, "GL_EXT_shader_integer_mix", 1);
 
diff --git a/src/glsl/glsl_parser_extras.cpp b/src/glsl/glsl_parser_extras.cpp
index f1cabf4..1be533e 100644
--- a/src/glsl/glsl_parser_extras.cpp
+++ b/src/glsl/glsl_parser_extras.cpp
@@ -523,6 +523,7 @@ static const _mesa_glsl_extension _mesa_glsl_supported_extensions[] = {
    EXT(AMD_vertex_shader_layer,        true,  false,     AMD_vertex_shader_layer),
    EXT(EXT_shader_integer_mix,         true,  true,      EXT_shader_integer_mix),
    EXT(ARB_texture_gather,             true,  false,     ARB_texture_gather),
+   EXT(ARB_sample_shading,             true,  false,     ARB_sample_shading),
 };
 
 #undef EXT
diff --git a/src/glsl/glsl_parser_extras.h b/src/glsl/glsl_parser_extras.h
index 26841f5..020148e 100644
--- a/src/glsl/glsl_parser_extras.h
+++ b/src/glsl/glsl_parser_extras.h
@@ -313,6 +313,8 @@ struct _mesa_glsl_parse_state {
    bool AMD_vertex_shader_layer_warn;
    bool ARB_shading_language_420pack_enable;
    bool ARB_shading_language_420pack_warn;
+   bool ARB_sample_shading_enable;
+   bool ARB_sample_shading_warn;
    bool EXT_shader_integer_mix_enable;
    bool EXT_shader_integer_mix_warn;
    /*@}*/
diff --git a/src/glsl/standalone_scaffolding.cpp b/src/glsl/standalone_scaffolding.cpp
index 7a1cf68..cbff6d1 100644
--- a/src/glsl/standalone_scaffolding.cpp
+++ b/src/glsl/standalone_scaffolding.cpp
@@ -97,6 +97,7 @@ void initialize_context_to_defaults(struct gl_context *ctx, gl_api api)
    ctx->Extensions.ARB_explicit_attrib_location = true;
    ctx->Extensions.ARB_fragment_coord_conventions = true;
    ctx->Extensions.ARB_gpu_shader5 = true;
+   ctx->Extensions.ARB_sample_shading = true;
    ctx->Extensions.ARB_shader_bit_encoding = true;
    ctx->Extensions.ARB_shader_stencil_export = true;
    ctx->Extensions.ARB_shader_texture_lod = true;
diff --git a/src/mesa/main/extensions.c b/src/mesa/main/extensions.c
index 2507fdf..9e908c0 100644
--- a/src/mesa/main/extensions.c
+++ b/src/mesa/main/extensions.c
@@ -200,6 +200,7 @@ static const struct extension extension_table[] = {
    { "GL_EXT_polygon_offset",                      o(dummy_true),                              GLL,            1995 },
    { "GL_EXT_provoking_vertex",                    o(EXT_provoking_vertex),                    GL,             2009 },
    { "GL_EXT_rescale_normal",                      o(dummy_true),                              GLL,            1997 },
+   { "GL_ARB_sample_shading",                      o(ARB_sample_shading),                      GL,             2009 },
    { "GL_EXT_secondary_color",                     o(dummy_true),                              GLL,            1999 },
    { "GL_EXT_separate_shader_objects",             o(EXT_separate_shader_objects),             GLL,            2008 },
    { "GL_EXT_separate_specular_color",             o(dummy_true),                              GLL,            1997 },
diff --git a/src/mesa/main/mtypes.h b/src/mesa/main/mtypes.h
index 15893ec..053514d 100644
--- a/src/mesa/main/mtypes.h
+++ b/src/mesa/main/mtypes.h
@@ -3198,6 +3198,7 @@ struct gl_extensions
    GLboolean ARB_occlusion_query;
    GLboolean ARB_occlusion_query2;
    GLboolean ARB_point_sprite;
+   GLboolean ARB_sample_shading;
    GLboolean ARB_seamless_cube_map;
    GLboolean ARB_shader_bit_encoding;
    GLboolean ARB_shader_stencil_export;
-- 
1.8.1.4