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117 lines (104 loc) · 5.2 KB
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Copy pathparticle.js
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117 lines (104 loc) · 5.2 KB
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pc.programlib.particle = {
generateKey: function (device, options) {
var key = "particle";
for (var prop in options) {
if (options.hasOwnProperty(prop)) {
key += options[prop];
}
}
return key;
},
_animTex: function (options, chunk) {
var vshader = "";
vshader += options.animTexLoop ? chunk.particleAnimFrameLoopVS : chunk.particleAnimFrameClampVS;
vshader += chunk.particleAnimTexVS;
return vshader;
},
createShaderDefinition: function (device, options) {
var chunk = pc.shaderChunks;
var vshader = "";
var fshader = pc.programlib.precisionCode(device) + "\n";
if (device.webgl2) {
vshader += "#define GL2\n";
fshader += "#define GL2\n";
}
vshader += "#define VERTEXSHADER\n";
if (options.animTex) vshader += "\nuniform vec4 animTexParams;\n";
if (options.normal == 2) vshader += "\nvarying mat3 ParticleMat;\n";
if (options.normal == 1) vshader += "\nvarying vec3 Normal;\n";
if (options.soft) vshader += "\nvarying float vDepth;\n";
if (!options.useCpu) {
vshader += chunk.particle_initVS;
vshader += (options.pack8 ? chunk.particleInputRgba8PS : chunk.particleInputFloatPS);
if (options.soft > 0) vshader += chunk.screenDepthPS;
vshader += chunk.particleVS;
if (options.localSpace) vshader += chunk.particle_localShiftVS;
if (options.animTex) vshader += this._animTex(options, chunk);
if (options.wrap) vshader += chunk.particle_wrapVS;
if (options.alignToMotion) vshader += chunk.particle_pointAlongVS;
vshader += options.mesh ? chunk.particle_meshVS : chunk.particle_billboardVS;
if (options.normal == 1) vshader += chunk.particle_normalVS;
if (options.normal == 2) vshader += chunk.particle_TBNVS;
if (options.stretch > 0.0) vshader += chunk.particle_stretchVS;
vshader += chunk.particle_endVS;
if (options.soft > 0) vshader += chunk.particle_softVS;
} else {
if (options.soft > 0) vshader += chunk.screenDepthPS;
vshader += chunk.particle_cpuVS;
if (options.localSpace) vshader += chunk.particle_localShiftVS;
if (options.animTex) vshader += this._animTex(options, chunk);
// if (options.wrap) vshader += chunk.particle_wrapVS;
if (options.alignToMotion) vshader += chunk.particle_pointAlongVS;
vshader += options.mesh ? chunk.particle_meshVS : chunk.particle_billboardVS;
if (options.normal == 1) vshader += chunk.particle_normalVS;
if (options.normal == 2) vshader += chunk.particle_TBNVS;
if (options.stretch > 0.0) vshader += chunk.particle_stretchVS;
vshader += chunk.particle_cpu_endVS;
if (options.soft > 0) vshader += chunk.particle_softVS;
}
vshader += "}\n";
if (options.normal > 0) {
if (options.normal == 1) {
fshader += "\nvarying vec3 Normal;\n";
} else if (options.normal == 2) {
fshader += "\nvarying mat3 ParticleMat;\n";
}
fshader += "\nuniform vec3 lightCube[6];\n";
}
if (options.soft) fshader += "\nvarying float vDepth;\n";
if ((options.normal === 0) && (options.fog === "none")) options.srgb = false; // don't have to perform all gamma conversions when no lighting and fogging is used
fshader += pc.programlib.gammaCode(options.gamma);
fshader += pc.programlib.tonemapCode(options.toneMap);
if (options.fog === 'linear') {
fshader += chunk.fogLinearPS;
} else if (options.fog === 'exp') {
fshader += chunk.fogExpPS;
} else if (options.fog === 'exp2') {
fshader += chunk.fogExp2PS;
} else {
fshader += chunk.fogNonePS;
}
if (options.normal == 2) fshader += "\nuniform sampler2D normalMap;\n";
if (options.soft > 0) fshader += chunk.screenDepthPS;
fshader += chunk.particlePS;
if (options.soft > 0) fshader += chunk.particle_softPS;
if (options.normal == 1) fshader += "\nvec3 normal = Normal;\n";
if (options.normal == 2) fshader += chunk.particle_normalMapPS;
if (options.normal > 0) fshader += options.halflambert ? chunk.particle_halflambertPS : chunk.particle_lambertPS;
if (options.normal > 0) fshader += chunk.particle_lightingPS;
if (options.blend == pc.BLEND_NORMAL) {
fshader += chunk.particle_blendNormalPS;
} else if (options.blend == pc.BLEND_ADDITIVE) {
fshader += chunk.particle_blendAddPS;
} else if (options.blend == pc.BLEND_MULTIPLICATIVE) {
fshader += chunk.particle_blendMultiplyPS;
}
fshader += chunk.particle_endPS;
var attributes = pc.shaderChunks.collectAttribs(vshader);
return {
attributes: attributes,
vshader: vshader,
fshader: fshader
};
}
};