glarea: Use the appropriate texture format for GLES

The core OpenGL ES spec does not have GL_BGRA, so we need to make do
with GL_RGBA and live with the format conversion.

diff --git a/gtk/gtkglarea.c b/gtk/gtkglarea.c
index 480388636b2fc328870d29e0ec3551d5ee01a412..094378e65fc7a63f5a42ad86a349dba9f63d000e 100644 (file)
--- a/gtk/gtkglarea.c
+++ b/gtk/gtkglarea.c
@@ -458,7 +458,11 @@ gtk_gl_area_allocate_buffers (GtkGLArea *area)
       glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
       glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
       glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
-      glTexImage2D (GL_TEXTURE_2D, 0, GL_RGBA8, width, height, 0, GL_BGRA, GL_UNSIGNED_BYTE, NULL);
+
+      if (gdk_gl_context_get_use_es (priv->context))
+        glTexImage2D (GL_TEXTURE_2D, 0, GL_RGBA8, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
+      else
+        glTexImage2D (GL_TEXTURE_2D, 0, GL_RGBA8, width, height, 0, GL_BGRA, GL_UNSIGNED_BYTE, NULL);
     }
 
   if (priv->render_buffer)