57 lines
918 B
JavaScript
57 lines
918 B
JavaScript
|
/**
|
||
|
|
* Depth-of-field shader using mipmaps
|
||
|
|
* - from Matt Handley @applmak
|
||
|
|
* - requires power-of-2 sized render target with enabled mipmaps
|
||
|
|
*/
|
||
|
|
|
||
|
|
const DOFMipMapShader = {
|
||
|
|
|
||
|
|
name: 'DOFMipMapShader',
|
||
|
|
|
||
|
|
uniforms: {
|
||
|
|
|
||
|
|
'tColor': { value: null },
|
||
|
|
'tDepth': { value: null },
|
||
|
|
'focus': { value: 1.0 },
|
||
|
|
'maxblur': { value: 1.0 }
|
||
|
|
|
||
|
|
},
|
||
|
|
|
||
|
|
vertexShader: /* glsl */`
|
||
|
|
|
||
|
|
varying vec2 vUv;
|
||
|
|
|
||
|
|
void main() {
|
||
|
|
|
||
|
|
vUv = uv;
|
||
|
|
gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );
|
||
|
|
|
||
|
|
}`,
|
||
|
|
|
||
|
|
fragmentShader: /* glsl */`
|
||
|
|
|
||
|
|
uniform float focus;
|
||
|
|
uniform float maxblur;
|
||
|
|
|
||
|
|
uniform sampler2D tColor;
|
||
|
|
uniform sampler2D tDepth;
|
||
|
|
|
||
|
|
varying vec2 vUv;
|
||
|
|
|
||
|
|
void main() {
|
||
|
|
|
||
|
|
vec4 depth = texture2D( tDepth, vUv );
|
||
|
|
|
||
|
|
float factor = depth.x - focus;
|
||
|
|
|
||
|
|
vec4 col = texture2D( tColor, vUv, 2.0 * maxblur * abs( focus - depth.x ) );
|
||
|
|
|
||
|
|
gl_FragColor = col;
|
||
|
|
gl_FragColor.a = 1.0;
|
||
|
|
|
||
|
|
}`
|
||
|
|
|
||
|
|
};
|
||
|
|
|
||
|
|
export { DOFMipMapShader };
|