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/**
* @author flimshaw / http://charliehoey.com
*
* Technicolor Shader
* Simulates the look of the two-strip technicolor process popular in early 20th century films.
* More historical info here: http://www.widescreenmuseum.com/oldcolor/technicolor1.htm
* Demo here: http://charliehoey.com/technicolor_shader/shader_test.html
*/
var TechnicolorShader = {
uniforms: {
"tDiffuse": { value: null }
},
vertexShader: [
"varying vec2 vUv;",
"void main() {",
" vUv = uv;",
" gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );",
"}"
].join( "\n" ),
fragmentShader: [
"uniform sampler2D tDiffuse;",
"varying vec2 vUv;",
"void main() {",
" vec4 tex = texture2D( tDiffuse, vec2( vUv.x, vUv.y ) );",
" vec4 newTex = vec4(tex.r, (tex.g + tex.b) * .5, (tex.g + tex.b) * .5, 1.0);",
" gl_FragColor = newTex;",
"}"
].join( "\n" )
};
export { TechnicolorShader };
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