mesa: Add ARB_ES3_compatibility flag.

Adding this now makes it easier to develop and test GLES3 features, since we
can do initial development and testing using desktop GL.  Later GLSL compiler
patches check for either ctx->Extensions.ARB_ES3_compatibility or
_mesa_is_gles3 to allow certain features (i.e., "#version 300 es").

[v2, idr]: Just edits to the commit message.

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Acked-by: Carl Worth <cworth@cworth.org>

4 files changed, 4 insertions, 0 deletions

diff --git a/src/glsl/builtins/tools/generate_builtins.py b/src/glsl/builtins/tools/generate_builtins.py
index 0b7f6a0..14a72fc 100755
--- a/src/glsl/builtins/tools/generate_builtins.py
+++ b/src/glsl/builtins/tools/generate_builtins.py
@@ -176,6 +176,7 @@ read_builtins(GLenum target, const char *protos, const char **functions, unsigne
    fakeCtx.API = API_OPENGL_COMPAT;
    fakeCtx.Const.GLSLVersion = 140;
    fakeCtx.Extensions.ARB_ES2_compatibility = true;
+   fakeCtx.Extensions.ARB_ES3_compatibility = true;
    fakeCtx.Const.ForceGLSLExtensionsWarn = false;
    gl_shader *sh = _mesa_new_shader(NULL, 0, target);
    struct _mesa_glsl_parse_state *st =
diff --git a/src/glsl/standalone_scaffolding.cpp b/src/glsl/standalone_scaffolding.cpp
index 120ee95..33d3804 100644
--- a/src/glsl/standalone_scaffolding.cpp
+++ b/src/glsl/standalone_scaffolding.cpp
@@ -73,6 +73,7 @@ void initialize_context_to_defaults(struct gl_context *ctx, gl_api api)
    ctx->Extensions.dummy_false = false;
    ctx->Extensions.dummy_true = true;
    ctx->Extensions.ARB_ES2_compatibility = true;
+   ctx->Extensions.ARB_ES3_compatibility = false;
    ctx->Extensions.ARB_draw_instanced = true;
    ctx->Extensions.ARB_fragment_coord_conventions = true;
    ctx->Extensions.EXT_texture_array = true;
diff --git a/src/mesa/main/extensions.c b/src/mesa/main/extensions.c
index 150d41e..11cbea2 100644
--- a/src/mesa/main/extensions.c
+++ b/src/mesa/main/extensions.c
@@ -80,6 +80,7 @@ struct extension {
 static const struct extension extension_table[] = {
    /* ARB Extensions */
    { "GL_ARB_ES2_compatibility",                   o(ARB_ES2_compatibility),                   GL,             2009 },
+   { "GL_ARB_ES3_compatibility",                   o(ARB_ES3_compatibility),                   GL,             2012 },
    { "GL_ARB_base_instance",                       o(ARB_base_instance),                       GL,             2011 },
    { "GL_ARB_blend_func_extended",                 o(ARB_blend_func_extended),                 GL,             2009 },
    { "GL_ARB_color_buffer_float",                  o(ARB_color_buffer_float),                  GL,             2004 },
diff --git a/src/mesa/main/mtypes.h b/src/mesa/main/mtypes.h
index 54479c2..66693a7 100644
--- a/src/mesa/main/mtypes.h
+++ b/src/mesa/main/mtypes.h
@@ -2941,6 +2941,7 @@ struct gl_extensions
    GLboolean dummy_false; /* Set false by _mesa_init_extensions(). */
    GLboolean ANGLE_texture_compression_dxt;
    GLboolean ARB_ES2_compatibility;
+   GLboolean ARB_ES3_compatibility;
    GLboolean ARB_base_instance;
    GLboolean ARB_blend_func_extended;
    GLboolean ARB_color_buffer_float;