| // 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) |
| |
| // Note: The GLES backend uses name matching for attribute locations. This name |
| // must match the name of the attribute output in: |
| // impeller/entity/shaders/runtime_effect.vert |
| 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 |
