glsl: add support for GL_OES_EGL_image_external

This extension introduces a new sampler type: samplerExternalOES.
texture2D (and texture2DProj) can be used to do a texture look up in an
external texture.

Reviewed-by: Brian Paul <brianp@vmware.com>
Acked-by: Jakob Bornecrantz <jakob@vmware.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>

1 files changed, 18 insertions, 0 deletions

diff --git a/src/glsl/glsl_types.cpp b/src/glsl/glsl_types.cpp
index 03e99879e8e..8587da0a3a2 100644
--- a/src/glsl/glsl_types.cpp
+++ b/src/glsl/glsl_types.cpp
@@ -203,6 +203,15 @@ glsl_type::generate_OES_texture_3D_types(glsl_symbol_table *symtab, bool warn)
 
 
 void
+glsl_type::generate_OES_EGL_image_external_types(glsl_symbol_table *symtab,
+						 bool warn)
+{
+   add_types_to_symbol_table(symtab, builtin_OES_EGL_image_external_types,
+			     Elements(builtin_OES_EGL_image_external_types),
+			     warn);
+}
+
+void
 _mesa_glsl_initialize_types(struct _mesa_glsl_parse_state *state)
 {
    switch (state->language_version) {
@@ -238,6 +247,15 @@ _mesa_glsl_initialize_types(struct _mesa_glsl_parse_state *state)
       glsl_type::generate_EXT_texture_array_types(state->symbols,
 				       state->EXT_texture_array_warn);
    }
+
+   /* We cannot check for language_version == 100 here because we need the
+    * types to support fixed-function program generation.  But this is fine
+    * since the extension is never enabled for OpenGL contexts.
+    */
+   if (state->OES_EGL_image_external_enable) {
+      glsl_type::generate_OES_EGL_image_external_types(state->symbols,
+					       state->OES_EGL_image_external_warn);
+   }
 }