[mutter] cogl: Bump minimum GLES version to 2.0

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit 8180927de25007b2b34a8be8c44a466bdbb36321
Author: Adam Jackson <ajax redhat com>
Date:   Fri Mar 8 11:41:17 2019 -0500

    cogl: Bump minimum GLES version to 2.0
    
    This is already effectively true because there is only a GLSL backend.
    It also implies OES_texture_npot.
    
    https://gitlab.gnome.org/GNOME/mutter/merge_requests/489

 cogl/cogl/driver/gl/gles/cogl-driver-gles.c | 46 +++++++++++++----------------
 1 file changed, 21 insertions(+), 25 deletions(-)
---
diff --git a/cogl/cogl/driver/gl/gles/cogl-driver-gles.c b/cogl/cogl/driver/gl/gles/cogl-driver-gles.c
index 23158d5c7..df9e8674f 100644
--- a/cogl/cogl/driver/gl/gles/cogl-driver-gles.c
+++ b/cogl/cogl/driver/gl/gles/cogl-driver-gles.c
@@ -33,6 +33,7 @@
 #include <string.h>
 
 #include "cogl-context-private.h"
+#include "cogl-error-private.h"
 #include "cogl-feature-private.h"
 #include "cogl-renderer-private.h"
 #include "cogl-private.h"
@@ -287,6 +288,15 @@ _cogl_driver_update_features (CoglContext *context,
       gl_minor = 1;
     }
 
+  if (!COGL_CHECK_GL_VERSION (gl_major, gl_minor, 2, 0))
+    {
+      _cogl_set_error (error,
+                       COGL_DRIVER_ERROR,
+                       COGL_DRIVER_ERROR_INVALID_VERSION,
+                       "OpenGL ES 2.0 or better is required");
+      return FALSE;
+    }
+
   _cogl_feature_check_ext_functions (context,
                                      gl_major,
                                      gl_minor,
@@ -314,7 +324,6 @@ _cogl_driver_update_features (CoglContext *context,
   COGL_FLAGS_SET (private_features, COGL_PRIVATE_FEATURE_ANY_GL, TRUE);
   COGL_FLAGS_SET (private_features, COGL_PRIVATE_FEATURE_ALPHA_TEXTURES, TRUE);
 
-  /* Both GLES 1.1 and GLES 2.0 support point sprites in core */
   flags |= COGL_FEATURE_POINT_SPRITE;
   COGL_FLAGS_SET (context->features, COGL_FEATURE_ID_POINT_SPRITE, TRUE);
 
@@ -341,30 +350,17 @@ _cogl_driver_update_features (CoglContext *context,
       COGL_FLAGS_SET (context->features, COGL_FEATURE_ID_DEPTH_TEXTURE, TRUE);
     }
 
-  if (_cogl_check_extension ("GL_OES_texture_npot", gl_extensions))
-    {
-      flags |= (COGL_FEATURE_TEXTURE_NPOT |
-                COGL_FEATURE_TEXTURE_NPOT_BASIC |
-                COGL_FEATURE_TEXTURE_NPOT_MIPMAP |
-                COGL_FEATURE_TEXTURE_NPOT_REPEAT);
-      COGL_FLAGS_SET (context->features,
-                      COGL_FEATURE_ID_TEXTURE_NPOT, TRUE);
-      COGL_FLAGS_SET (context->features,
-                      COGL_FEATURE_ID_TEXTURE_NPOT_BASIC, TRUE);
-      COGL_FLAGS_SET (context->features,
-                      COGL_FEATURE_ID_TEXTURE_NPOT_MIPMAP, TRUE);
-      COGL_FLAGS_SET (context->features,
-                      COGL_FEATURE_ID_TEXTURE_NPOT_REPEAT, TRUE);
-    }
-  else if (_cogl_check_extension ("GL_IMG_texture_npot", gl_extensions))
-    {
-      flags |= (COGL_FEATURE_TEXTURE_NPOT_BASIC |
-                COGL_FEATURE_TEXTURE_NPOT_MIPMAP);
-      COGL_FLAGS_SET (context->features,
-                      COGL_FEATURE_ID_TEXTURE_NPOT_BASIC, TRUE);
-      COGL_FLAGS_SET (context->features,
-                      COGL_FEATURE_ID_TEXTURE_NPOT_MIPMAP, TRUE);
-    }
+  flags |= (COGL_FEATURE_TEXTURE_NPOT |
+            COGL_FEATURE_TEXTURE_NPOT_BASIC |
+            COGL_FEATURE_TEXTURE_NPOT_MIPMAP |
+            COGL_FEATURE_TEXTURE_NPOT_REPEAT);
+  COGL_FLAGS_SET (context->features, COGL_FEATURE_ID_TEXTURE_NPOT, TRUE);
+  COGL_FLAGS_SET (context->features,
+                  COGL_FEATURE_ID_TEXTURE_NPOT_BASIC, TRUE);
+  COGL_FLAGS_SET (context->features,
+                  COGL_FEATURE_ID_TEXTURE_NPOT_MIPMAP, TRUE);
+  COGL_FLAGS_SET (context->features,
+                  COGL_FEATURE_ID_TEXTURE_NPOT_REPEAT, TRUE);
 
   if (context->glTexImage3D)
     {