| // Copyright 2013 The Flutter Authors. All rights reserved. | |
| // Use of this source code is governed by a BSD-style license that can be | |
| // found in the LICENSE file. | |
| #ifndef RUNTIME_EFFECT_GLSL_ | |
| #define RUNTIME_EFFECT_GLSL_ | |
| #if defined(IMPELLER_GRAPHICS_BACKEND) | |
| in vec2 _fragCoord; | |
| vec2 FlutterFragCoord() { | |
| return _fragCoord; | |
| } | |
| #elif defined(SKIA_GRAPHICS_BACKEND) | |
| vec2 FlutterFragCoord() { | |
| return gl_FragCoord.xy; | |
| } | |
| #else | |
| #error "Runtime effect builtins are not supported for this graphics backend." | |
| #endif | |
| #endif |