+
+/**
+ * Called via ctx->Driver.GenerateMipmap()
+ * This is basically a wrapper for _mesa_meta_GenerateMipmap() which checks
+ * if we'll be using software mipmap generation. In that case, we need to
+ * map/unmap the base level texture image.
+ */
+static void
+intelGenerateMipmap(GLcontext *ctx, GLenum target,
+ struct gl_texture_object *texObj)
+{
+ if (_mesa_meta_check_generate_mipmap_fallback(ctx, target, texObj)) {
+ /* sw path: need to map texture images */
+ struct intel_context *intel = intel_context(ctx);
+ struct intel_texture_object *intelObj = intel_texture_object(texObj);
+ intel_tex_map_level_images(intel, intelObj, texObj->BaseLevel);
+ _mesa_generate_mipmap(ctx, target, texObj);
+ intel_tex_unmap_level_images(intel, intelObj, texObj->BaseLevel);
+
+ {
+ GLuint nr_faces = (texObj->Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1;
+ GLuint face, i;
+ /* Update the level information in our private data in the new images,
+ * since it didn't get set as part of a normal TexImage path.
+ */
+ for (face = 0; face < nr_faces; face++) {
+ for (i = texObj->BaseLevel + 1; i < texObj->MaxLevel; i++) {
+ struct intel_texture_image *intelImage =
+ intel_texture_image(texObj->Image[face][i]);
+ if (!intelImage)
+ break;
+ intelImage->level = i;
+ intelImage->face = face;
+ /* Unreference the miptree to signal that the new Data is a
+ * bare pointer from mesa.
+ */
+ intel_miptree_release(intel, &intelImage->mt);
+ }
+ }
+ }
+ }
+ else {
+ _mesa_meta_GenerateMipmap(ctx, target, texObj);
+ }
+}
+
+