Mesa (master): mesa: Add ARB_shader_precision infrastructure

[Chris Forbes]

Module: Mesa
Branch: master
Commit: d36fa60191359af9ac1e1889bcdc95c3b9d65332
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=d36fa60191359af9ac1e1889bcdc95c3b9d65332

Author: Micah Fedke <micah.fedke at collabora.co.uk>
Date:   Wed Dec 31 14:16:52 2014 -0600

mesa: Add ARB_shader_precision infrastructure

Reviewed-by: Ian Romanick <ian.d.romanick at intel.com>
Reviewed-by: Chris Forbes <chrisf at ijw.co.nz>

---

 src/glsl/glcpp/glcpp-parse.y    |    3 +++
 src/glsl/glsl_parser_extras.cpp |    1 +
 src/glsl/glsl_parser_extras.h   |    2 ++
 src/mapi/glapi/gen/gl_API.xml   |    6 +++++-
 src/mesa/main/extensions.c      |    1 +
 src/mesa/main/mtypes.h          |    1 +
 6 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/src/glsl/glcpp/glcpp-parse.y b/src/glsl/glcpp/glcpp-parse.y
index 9e705ef..e5bebe5 100644
--- a/src/glsl/glcpp/glcpp-parse.y
+++ b/src/glsl/glcpp/glcpp-parse.y
@@ -2474,6 +2474,9 @@ _glcpp_parser_handle_version_declaration(glcpp_parser_t *parser, intmax_t versio
 
               if (extensions->ARB_derivative_control)
                  add_builtin_define(parser, "GL_ARB_derivative_control", 1);
+
+              if (extensions->ARB_shader_precision)
+                 add_builtin_define(parser, "GL_ARB_shader_precision", 1);
 	   }
 	}
 
diff --git a/src/glsl/glsl_parser_extras.cpp b/src/glsl/glsl_parser_extras.cpp
index 6d18cd4..ccdf031 100644
--- a/src/glsl/glsl_parser_extras.cpp
+++ b/src/glsl/glsl_parser_extras.cpp
@@ -532,6 +532,7 @@ static const _mesa_glsl_extension _mesa_glsl_supported_extensions[] = {
    EXT(ARB_shader_atomic_counters,     true,  false,     ARB_shader_atomic_counters),
    EXT(ARB_shader_bit_encoding,        true,  false,     ARB_shader_bit_encoding),
    EXT(ARB_shader_image_load_store,    true,  false,     ARB_shader_image_load_store),
+   EXT(ARB_shader_precision,           true,  false,     ARB_shader_precision),
    EXT(ARB_shader_stencil_export,      true,  false,     ARB_shader_stencil_export),
    EXT(ARB_shader_texture_lod,         true,  false,     ARB_shader_texture_lod),
    EXT(ARB_shading_language_420pack,   true,  false,     ARB_shading_language_420pack),
diff --git a/src/glsl/glsl_parser_extras.h b/src/glsl/glsl_parser_extras.h
index 4887672..843fdae 100644
--- a/src/glsl/glsl_parser_extras.h
+++ b/src/glsl/glsl_parser_extras.h
@@ -424,6 +424,8 @@ struct _mesa_glsl_parse_state {
    bool ARB_shader_bit_encoding_warn;
    bool ARB_shader_image_load_store_enable;
    bool ARB_shader_image_load_store_warn;
+   bool ARB_shader_precision_enable;
+   bool ARB_shader_precision_warn;
    bool ARB_shader_stencil_export_enable;
    bool ARB_shader_stencil_export_warn;
    bool ARB_shader_texture_lod_enable;
diff --git a/src/mapi/glapi/gen/gl_API.xml b/src/mapi/glapi/gen/gl_API.xml
index 2d6bed2..e3cbab3 100644
--- a/src/mapi/glapi/gen/gl_API.xml
+++ b/src/mapi/glapi/gen/gl_API.xml
@@ -8247,7 +8247,11 @@
 
 <xi:include href="ARB_separate_shader_objects.xml" xmlns:xi="http://www.w3.org/2001/XInclude"/>
 
-<!-- ARB extensions #98...#108 -->
+<category name="GL_ARB_shader_precision" number="98">
+      <!-- No new functions, types, enums. -->
+</category>
+
+<!-- ARB extensions #99...#108 -->
 
 <xi:include href="ARB_ES2_compatibility.xml" xmlns:xi="http://www.w3.org/2001/XInclude"/>
 
diff --git a/src/mesa/main/extensions.c b/src/mesa/main/extensions.c
index e5bac7f..16f1241 100644
--- a/src/mesa/main/extensions.c
+++ b/src/mesa/main/extensions.c
@@ -148,6 +148,7 @@ static const struct extension extension_table[] = {
    { "GL_ARB_shader_bit_encoding",                 o(ARB_shader_bit_encoding),                 GL,             2010 },
    { "GL_ARB_shader_image_load_store",             o(ARB_shader_image_load_store),             GL,             2011 },
    { "GL_ARB_shader_objects",                      o(dummy_true),                              GL,             2002 },
+   { "GL_ARB_shader_precision",                    o(ARB_shader_precision),                    GL,             2010 },
    { "GL_ARB_shader_stencil_export",               o(ARB_shader_stencil_export),               GL,             2009 },
    { "GL_ARB_shader_texture_lod",                  o(ARB_shader_texture_lod),                  GL,             2009 },
    { "GL_ARB_shading_language_100",                o(dummy_true),                              GLL,            2003 },
diff --git a/src/mesa/main/mtypes.h b/src/mesa/main/mtypes.h
index b95dfb9..4c83379 100644
--- a/src/mesa/main/mtypes.h
+++ b/src/mesa/main/mtypes.h
@@ -3757,6 +3757,7 @@ struct gl_extensions
    GLboolean ARB_shader_atomic_counters;
    GLboolean ARB_shader_bit_encoding;
    GLboolean ARB_shader_image_load_store;
+   GLboolean ARB_shader_precision;
    GLboolean ARB_shader_stencil_export;
    GLboolean ARB_shader_texture_lod;
    GLboolean ARB_shading_language_packing;