// Copyright 2020 The Tint Authors.
//
// 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.

// Vertex shader
[[block]] struct Uniforms {
  [[offset(0)]] modelViewProjectionMatrix : mat4x4<f32>;
};

[[binding(0), group(0)]] var<uniform> uniforms : [[access(read)]] Uniforms;

[[location(0)]] var<in> cur_position : vec4<f32>;
[[location(1)]] var<in> color : vec4<f32>;
[[location(0)]] var<out> vtxFragColor : vec4<f32>;
[[builtin(position)]] var<out> Position : vec4<f32>;

[[stage(vertex)]]
fn vtx_main() -> void {
   Position = uniforms.modelViewProjectionMatrix * cur_position;
   vtxFragColor = color;
}

// Fragment shader
[[location(0)]] var<in> fragColor : vec4<f32>;
[[location(0)]] var<out> outColor : vec4<f32>;

[[stage(fragment)]]
fn frag_main() -> void {
  outColor = fragColor;
}