| // Copyright 2017 Google Inc. All Rights Reserved. | |
| // | |
| // Licensed under the Apache License, Version 2.0 (the "License"); | |
| // you may not use this file except in compliance with the License. | |
| // You may obtain a copy of the License at | |
| // | |
| // http://www.apache.org/licenses/LICENSE-2.0 | |
| // | |
| // Unless required by applicable law or agreed to in writing, software | |
| // distributed under the License is distributed on an "AS IS" BASIS, | |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| // See the License for the specific language governing permissions and | |
| // limitations under the License. | |
| uniform vec4 u_clip_adjustment; | |
| uniform mat3 u_view_matrix; | |
| attribute vec2 a_position; | |
| attribute vec2 a_offset; | |
| varying vec2 v_offset; | |
| void main() { | |
| vec3 pos2d = u_view_matrix * vec3(a_position, 1); | |
| gl_Position = vec4(pos2d.xy * u_clip_adjustment.xy + | |
| u_clip_adjustment.zw, 0, pos2d.z); | |
| v_offset = a_offset; | |
| } |