mesa/main: updates for EXT_texture_format_BGRA8888

The spec is about to change, so let's prepare for the new and brighter
future.

Reviewed-by: Daniel Stone <daniels@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/27726>

src/mesa/main/fbobject.c

@@ -2658,7 +2658,8 @@ _mesa_base_fbo_format(const struct gl_context *ctx, GLenum internalFormat)
          ? GL_RGB : 0;
 
    case GL_BGRA:
-      /* EXT_texture_format_BGRA8888 only adds this as color-renderable for
+   case GL_BGRA8_EXT:
+      /* EXT_texture_format_BGRA8888 only adds these as color-renderable for
        * GLES 2 and later
        */
       if (_mesa_has_EXT_texture_format_BGRA8888(ctx) && _mesa_is_gles2(ctx))

src/mesa/main/glformats.c

@@ -2761,6 +2761,7 @@ _mesa_gles_check_internalformat(struct gl_context *ctx,
 
    /* GL_EXT_texture_format_BGRA8888 */
    case GL_BGRA:
+   case GL_BGRA8_EXT:
 
    /* GL_OES_required_internalformat */
    case GL_RGB565:
@@ -2901,21 +2902,6 @@ _mesa_gles_check_internalformat(struct gl_context *ctx,
          return GL_INVALID_VALUE;
       return GL_NO_ERROR;
 
-   case GL_BGRA8_EXT: {
-      /* This is technically speaking out-of-spec. But too many
-       * applications seems to depend on it, so let's allow it
-       * together with a small complaint */
-      static bool warned = false;
-      if (!warned) {
-         _mesa_warning(ctx,
-            "internalformat = GL_BGRA8_EXT invalid by spec, but too many "
-            "applications depend on it to error. Please fix the software "
-            "that causes this problem.");
-         warned = true;
-      }
-      return GL_NO_ERROR;
-      }
-
    default:
       return GL_INVALID_VALUE;
    }