mesa: add support for GL_OES_EGL_image_external

This is an OpenGL ES specific extension.  External textures are textures that
may be sampled from, but not be updated (no glTexSubImage* and etc.).  The
image data are taken from an EGLImage.

Reviewed-by: Brian Paul <[email protected]>
Acked-by: Jakob Bornecrantz <[email protected]>

1 files changed, 13 insertions, 0 deletions

diff --git a/src/mesa/main/enable.c b/src/mesa/main/enable.c
index 689dc8a99ec..b2c77243b50 100644
--- a/src/mesa/main/enable.c
+++ b/src/mesa/main/enable.c
@@ -916,6 +916,14 @@ _mesa_set_enable(struct gl_context *ctx, GLenum cap, GLboolean state)
          ctx->Color.sRGBEnabled = state;
          break;
 
+      /* GL_OES_EGL_image_external */
+      case GL_TEXTURE_EXTERNAL_OES:
+         CHECK_EXTENSION(OES_EGL_image_external, cap);
+         if (!enable_texture(ctx, state, TEXTURE_EXTERNAL_BIT)) {
+            return;
+         }
+         break;
+
       default:
          goto invalid_enum_error;
    }
@@ -1417,6 +1425,11 @@ _mesa_IsEnabled( GLenum cap )
 	 CHECK_EXTENSION(EXT_framebuffer_sRGB);
 	 return ctx->Color.sRGBEnabled;
 
+      /* GL_OES_EGL_image_external */
+      case GL_TEXTURE_EXTERNAL_OES:
+	 CHECK_EXTENSION(OES_EGL_image_external);
+         return is_texture_enabled(ctx, TEXTURE_EXTERNAL_BIT);
+
       default:
          goto invalid_enum_error;
    }