// Copyright 2016 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.

Shader "GoogleVR/Particles/Additive Overlay" {
  Properties {
    _MainTex ("Particle Texture", 2D) = "white" {}
  }

  Category {
    Tags {
      "Queue"="Overlay+100"
      "IgnoreProjector"="True"
      "RenderType"="Transparent"
      "PreviewType"="Plane"
    }

    Blend SrcAlpha One
    Cull Off Lighting Off ZWrite Off Fog { Color (0,0,0,0) }

    BindChannels {
      Bind "Color", color
      Bind "Vertex", vertex
      Bind "TexCoord", texcoord
    }

    SubShader {
      Pass {
        SetTexture [_MainTex] {
          combine texture * primary
        }
      }
    }
  }
}