mesa/teximage: add TEXTURE_CUBE_MAP_ARRAY target for CompressedTexImage3D

From section 8.7, page 179 of OpenGL ES 3.2 spec:

  An INVALID_OPERATION error is generated by CompressedTexImage3D
  if internalformat is one of the the formats in table 8.17 and target
  is not TEXTURE_2D_ARRAY, TEXTURE_CUBE_MAP_ARRAY or TEXTURE_3D.

  An INVALID_OPERATION error is generated by CompressedTexImage3D if
  internalformat is TEXTURE_CUBE_MAP_ARRAY and the “Cube Map Array”
  column of table 8.17 is not checked, or if internalformat is
  TEXTURE_3D and the “3D Tex.” column of table 8.17 is not checked.

So far it was only considering TEXTURE_2D_ARRAY as valid target. But as
"Cube Map Array" column is checked for all the cases, in practice we can
consider also TEXTURE_CUBE_MAP_ARRAY.

This fixes KHR-GLES32.core.texture_cube_map_array.etc2_texture

Reviewed-by: Nanley Chery <nanley.g.chery@intel.com>

diff --git a/src/mesa/main/teximage.c b/src/mesa/main/teximage.c
index 4ec6148bf42d16b05b925d9c9c096618fd44f104..3f3fcf6f84bd3f7e259a1ba9ad06d741afbaf6f3 100644 (file)
--- a/src/mesa/main/teximage.c
+++ b/src/mesa/main/teximage.c
@@ -1412,8 +1412,26 @@ _mesa_target_can_be_compressed(const struct gl_context *ctx, GLenum target,
        *
        * This should also be applicable for glTexStorage3D(). Other available
        * targets for these functions are: TEXTURE_3D and TEXTURE_CUBE_MAP_ARRAY.
+       *
+       * Section 8.7, page 179 of OpenGL ES 3.2 adds:
+       *
+       *      An INVALID_OPERATION error is generated by CompressedTexImage3D
+       *      if internalformat is one of the the formats in table 8.17 and target is
+       *      not TEXTURE_2D_ARRAY, TEXTURE_CUBE_MAP_ARRAY or TEXTURE_3D.
+       *
+       *      An INVALID_OPERATION error is generated by CompressedTexImage3D
+       *      if internalformat is TEXTURE_CUBE_MAP_ARRAY and the “Cube Map
+       *      Array” column of table 8.17 is not checked, or if internalformat
+       *      is TEXTURE_- 3D and the “3D Tex.” column of table 8.17 is not
+       *      checked.
+       *
+       * The instances of <internalformat> above should say <target>.
+       *
+       * Such table 8.17 has checked "Cube Map Array" column for all the
+       * cases. So in practice, TEXTURE_CUBE_MAP_ARRAY is now valid for OpenGL ES 3.2
        */
-      if (layout == MESA_FORMAT_LAYOUT_ETC2 && _mesa_is_gles3(ctx))
+      if (layout == MESA_FORMAT_LAYOUT_ETC2 && _mesa_is_gles3(ctx) &&
+          !_mesa_is_gles32(ctx))
             return write_error(error, GL_INVALID_OPERATION);
       target_can_be_compresed = _mesa_has_texture_cube_map_array(ctx);
       break;