+
+void GLAPIENTRY
+_mesa_TextureView_no_error(GLuint texture, GLenum target, GLuint origtexture,
+ GLenum internalformat,
+ GLuint minlevel, GLuint numlevels,
+ GLuint minlayer, GLuint numlayers)
+{
+ struct gl_texture_object *texObj;
+ struct gl_texture_object *origTexObj;
+
+ GET_CURRENT_CONTEXT(ctx);
+
+ origTexObj = _mesa_lookup_texture(ctx, origtexture);
+ texObj = _mesa_lookup_texture(ctx, texture);
+
+ texture_view(ctx, origTexObj, texObj, target, internalformat, minlevel,
+ numlevels, minlayer, numlayers, true);
+}
+
+void GLAPIENTRY
+_mesa_TextureView(GLuint texture, GLenum target, GLuint origtexture,
+ GLenum internalformat,
+ GLuint minlevel, GLuint numlevels,
+ GLuint minlayer, GLuint numlayers)
+{
+ struct gl_texture_object *texObj;
+ struct gl_texture_object *origTexObj;
+ GLuint newViewMinLevel, newViewMinLayer;
+
+ GET_CURRENT_CONTEXT(ctx);
+
+ if (MESA_VERBOSE & (VERBOSE_API | VERBOSE_TEXTURE))
+ _mesa_debug(ctx, "glTextureView %d %s %d %s %d %d %d %d\n",
+ texture, _mesa_enum_to_string(target), origtexture,
+ _mesa_enum_to_string(internalformat),
+ minlevel, numlevels, minlayer, numlayers);
+
+ if (origtexture == 0) {
+ _mesa_error(ctx, GL_INVALID_VALUE, "glTextureView(origtexture = %u)",
+ origtexture);
+ return;
+ }
+
+ /* Need original texture information to validate arguments */
+ origTexObj = _mesa_lookup_texture(ctx, origtexture);
+
+ /* If <origtexture> is not the name of a texture, INVALID_VALUE
+ * is generated.
+ */
+ if (!origTexObj) {
+ _mesa_error(ctx, GL_INVALID_VALUE, "glTextureView(origtexture = %u)",
+ origtexture);
+ return;
+ }
+
+ /* If <origtexture>'s TEXTURE_IMMUTABLE_FORMAT value is not TRUE,
+ * INVALID_OPERATION is generated.
+ */
+ if (!origTexObj->Immutable) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glTextureView(origtexture not immutable)");
+ return;
+ }
+
+ /* If <texture> is 0, INVALID_VALUE is generated. */
+ if (texture == 0) {
+ _mesa_error(ctx, GL_INVALID_VALUE, "glTextureView(texture = 0)");
+ return;
+ }
+
+ /* If <texture> is not a valid name returned by GenTextures,
+ * the error INVALID_OPERATION is generated.
+ */
+ texObj = _mesa_lookup_texture(ctx, texture);
+ if (texObj == NULL) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glTextureView(texture = %u non-gen name)", texture);
+ return;
+ }
+
+ /* If <texture> has already been bound and given a target, then
+ * the error INVALID_OPERATION is generated.
+ */
+ if (texObj->Target) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glTextureView(texture = %u already bound)", texture);
+ return;
+ }
+
+ /* Check for compatible target */
+ if (!target_valid(ctx, origTexObj->Target, target)) {
+ return; /* error was recorded */
+ }
+
+ /* minlevel and minlayer are relative to the view of origtexture.
+ * If minlevel or minlayer is greater than level or layer, respectively,
+ * return INVALID_VALUE.
+ */
+ newViewMinLevel = origTexObj->MinLevel + minlevel;
+ newViewMinLayer = origTexObj->MinLayer + minlayer;
+ if (newViewMinLevel >= (origTexObj->MinLevel + origTexObj->NumLevels)) {
+ _mesa_error(ctx, GL_INVALID_VALUE,
+ "glTextureView(new minlevel (%d) > orig minlevel (%d)"
+ " + orig numlevels (%d))",
+ newViewMinLevel, origTexObj->MinLevel, origTexObj->NumLevels);
+ return;
+ }
+
+ if (newViewMinLayer >= (origTexObj->MinLayer + origTexObj->NumLayers)) {
+ _mesa_error(ctx, GL_INVALID_VALUE,
+ "glTextureView(new minlayer (%d) > orig minlayer (%d)"
+ " + orig numlayers (%d))",
+ newViewMinLayer, origTexObj->MinLayer, origTexObj->NumLayers);
+ return;
+ }
+
+ if (!_mesa_texture_view_compatible_format(ctx,
+ origTexObj->Image[0][0]->InternalFormat,
+ internalformat)) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glTextureView(internalformat %s not compatible with origtexture %s)",
+ _mesa_enum_to_string(internalformat),
+ _mesa_enum_to_string(origTexObj->Image[0][0]->InternalFormat));
+ return;
+ }
+
+ texture_view(ctx, origTexObj, texObj, target, internalformat, minlevel,
+ numlevels, minlayer, numlayers, false);
+}