phaser
Version:
A fast, free and fun HTML5 Game Framework for Desktop and Mobile web browsers.
43 lines (42 loc) • 1.38 kB
JavaScript
module.exports = [
'#define SHADER_NAME PHASER_COLORMATRIX_FS',
'',
'precision mediump float;',
'',
'uniform sampler2D uMainSampler;',
'uniform float uColorMatrix[20];',
'uniform float uAlpha;',
'',
'varying vec2 outTexCoord;',
'',
'void main ()',
'{',
' vec4 c = texture2D(uMainSampler, outTexCoord);',
'',
' if (uAlpha == 0.0)',
' {',
' gl_FragColor = c;',
'',
' return;',
' }',
'',
' if (c.a > 0.0)',
' {',
' c.rgb /= c.a;',
' }',
'',
' vec4 result;',
'',
' result.r = (uColorMatrix[0] * c.r) + (uColorMatrix[1] * c.g) + (uColorMatrix[2] * c.b) + (uColorMatrix[3] * c.a) + uColorMatrix[4];',
' result.g = (uColorMatrix[5] * c.r) + (uColorMatrix[6] * c.g) + (uColorMatrix[7] * c.b) + (uColorMatrix[8] * c.a) + uColorMatrix[9];',
' result.b = (uColorMatrix[10] * c.r) + (uColorMatrix[11] * c.g) + (uColorMatrix[12] * c.b) + (uColorMatrix[13] * c.a) + uColorMatrix[14];',
' result.a = (uColorMatrix[15] * c.r) + (uColorMatrix[16] * c.g) + (uColorMatrix[17] * c.b) + (uColorMatrix[18] * c.a) + uColorMatrix[19];',
'',
' vec3 rgb = mix(c.rgb, result.rgb, uAlpha);',
'',
' rgb *= result.a;',
'',
' gl_FragColor = vec4(rgb, result.a);',
'}',
''
].join('\n');