ShaderTest.vert

// Copyright 2014 Sensics, Inc.
//
// 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.

//#version 120
#extension GL_ARB_gpu_shader5 : enable

out INFO {

    vec2 texCoords;
    float k1_red;
    float k1_green;
    float k1_blue;
    vec2 center;

} vs_out;

uniform float k1_red;
uniform float k1_green;
uniform float k1_blue;
uniform vec2 center;

void main() {

    const vec2 texCoords[4] = vec2[4](  vec2(0.0, 1.0), // top-left
                                        vec2(0.0, 0.0), // bottom-left
                                        vec2(1.0, 0.0), // bottom-right
                                        vec2(1.0, 1.0)); // top-right

    gl_Position = ftransform();
    gl_TexCoord[0] = gl_MultiTexCoord0;
    vs_out.texCoords = texCoords[gl_VertexID];

    vs_out.k1_red = k1_red;
    vs_out.k1_green = k1_green;
    vs_out.k1_blue = k1_blue;
    vs_out.center = center;
}