1cb93a386Sopenharmony_ci// Copyright 2020 The Tint Authors. 2cb93a386Sopenharmony_ci// 3cb93a386Sopenharmony_ci// Licensed under the Apache License, Version 2.0 (the "License"); 4cb93a386Sopenharmony_ci// you may not use this file except in compliance with the License. 5cb93a386Sopenharmony_ci// You may obtain a copy of the License at 6cb93a386Sopenharmony_ci// 7cb93a386Sopenharmony_ci// http://www.apache.org/licenses/LICENSE-2.0 8cb93a386Sopenharmony_ci// 9cb93a386Sopenharmony_ci// Unless required by applicable law or agreed to in writing, software 10cb93a386Sopenharmony_ci// distributed under the License is distributed on an "AS IS" BASIS, 11cb93a386Sopenharmony_ci// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12cb93a386Sopenharmony_ci// See the License for the specific language governing permissions and 13cb93a386Sopenharmony_ci// limitations under the License. 14cb93a386Sopenharmony_ci 15cb93a386Sopenharmony_ci// Vertex shader 16cb93a386Sopenharmony_ci[[stage(vertex)]] 17cb93a386Sopenharmony_cifn vtx_main([[builtin(vertex_index)]] VertexIndex : u32) 18cb93a386Sopenharmony_ci -> [[builtin(position)]] vec4<f32> { 19cb93a386Sopenharmony_ci var pos : array<vec2<f32>, 3> = array<vec2<f32>, 3>( 20cb93a386Sopenharmony_ci vec2<f32>(0.0, 0.5), 21cb93a386Sopenharmony_ci vec2<f32>(-0.5, -0.5), 22cb93a386Sopenharmony_ci vec2<f32>(0.5, -0.5)); 23cb93a386Sopenharmony_ci return vec4<f32>(pos[VertexIndex], 0.0, 1.0); 24cb93a386Sopenharmony_ci} 25cb93a386Sopenharmony_ci 26cb93a386Sopenharmony_ci// Fragment shader 27cb93a386Sopenharmony_ci[[stage(fragment)]] 28cb93a386Sopenharmony_cifn frag_main() -> [[location(0)]] vec4<f32> { 29cb93a386Sopenharmony_ci return vec4<f32>(1.0, 0.0, 0.0, 1.0); 30cb93a386Sopenharmony_ci} 31