glx: Enable GLX_EXT_create_context_es2_profile

This extension is only enabled if the underlying driver advertises
support for OpenGL ES 2.0.  This happens either through the getAPIMask
function in version 2 of the DRI2 extension or implicity through
version 2 of the DRISW extension.

Since there is no OpenGL ES 2.0 protocol, this extension is marked as
only available with direct-rendering.

Signed-off-by: Ian Romanick <[email protected]>

1 files changed, 16 insertions, 0 deletions

diff --git a/src/glx/dri_common.c b/src/glx/dri_common.c
index 5d50aa92e53..8feb58777b8 100644
--- a/src/glx/dri_common.c
+++ b/src/glx/dri_common.c
@@ -488,6 +488,9 @@ dri2_convert_glx_attribs(unsigned num_attribs, const uint32_t *attribs,
       case GLX_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB:
 	 *api = __DRI_API_OPENGL;
 	 break;
+      case GLX_CONTEXT_ES2_PROFILE_BIT_EXT:
+	 *api = __DRI_API_GLES2;
+	 break;
       default:
 	 *error = __DRI_CTX_ERROR_BAD_API;
 	 return false;
@@ -517,6 +520,19 @@ dri2_convert_glx_attribs(unsigned num_attribs, const uint32_t *attribs,
       return false;
    }
 
+   /* The GLX_EXT_create_context_es2_profile spec says:
+    *
+    *     "... If the version requested is 2.0, and the
+    *     GLX_CONTEXT_ES2_PROFILE_BIT_EXT bit is set in the
+    *     GLX_CONTEXT_PROFILE_MASK_ARB attribute (see below), then the context
+    *     returned will implement OpenGL ES 2.0. This is the only way in which
+    *     an implementation may request an OpenGL ES 2.0 context."
+    */
+   if (*api == __DRI_API_GLES2 && (*major_ver != 2 || *minor_ver != 0)) {
+      *error = __DRI_CTX_ERROR_BAD_API;
+      return false;
+   }
+
    *error = __DRI_CTX_ERROR_SUCCESS;
    return true;
 }