mirror_js/WebGL-Fluid-Simulation
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experiment with ga

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Pavel Dobryakov
2017-11-29 19:50:02 +03:00
parent 3bb1955303
commit bf85e5f3d6
1 changed files with 15 additions and 11 deletions
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26
script.js
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@@ -17,7 +17,7 @@ let config = {
let pointers = [];
let splatStack = [];
const { gl, ext, support_linear_float } = getWebGLContext(canvas);
const { gl, ext } = getWebGLContext(canvas);
startGUI();
function getWebGLContext (canvas) {
@@ -40,7 +40,7 @@ function getWebGLContext (canvas) {
const internalFormat = isWebGL2 ? gl.RGBA16F : gl.RGBA;
const internalFormatRG = isWebGL2 ? gl.RG16F : gl.RGBA;
const formatRG = isWebGL2 ? gl.RG : gl.RGBA;
const texType = isWebGL2 ? gl.HALF_FLOAT : halfFloat.HALF_FLOAT_OES;
const halfFloatTexType = isWebGL2 ? gl.HALF_FLOAT : halfFloat.HALF_FLOAT_OES;
return {
gl,
@@ -48,9 +48,9 @@ function getWebGLContext (canvas) {
internalFormat,
internalFormatRG,
formatRG,
texType
},
support_linear_float
halfFloatTexType,
support_linear_float
}
};
}
@@ -396,7 +396,7 @@ initFramebuffers();
const clearProgram = new GLProgram(baseVertexShader, clearShader);
const displayProgram = new GLProgram(baseVertexShader, displayShader);
const splatProgram = new GLProgram(baseVertexShader, splatShader);
const advectionProgram = new GLProgram(baseVertexShader, support_linear_float ? advectionShader : advectionManualFilteringShader);
const advectionProgram = new GLProgram(baseVertexShader, ext.support_linear_float ? advectionShader : advectionManualFilteringShader);
const divergenceProgram = new GLProgram(baseVertexShader, divergenceShader);
const curlProgram = new GLProgram(baseVertexShader, curlShader);
const vorticityProgram = new GLProgram(baseVertexShader, vorticityShader);
@@ -410,10 +410,10 @@ function initFramebuffers () {
const iFormat = ext.internalFormat;
const iFormatRG = ext.internalFormatRG;
const formatRG = ext.formatRG;
const texType = ext.texType;
const texType = ext.halfFloatTexType;
density = createDoubleFBO(0, textureWidth, textureHeight, iFormat , gl.RGBA , texType, support_linear_float ? gl.LINEAR : gl.NEAREST);
velocity = createDoubleFBO(2, textureWidth, textureHeight, iFormatRG, formatRG, texType, support_linear_float ? gl.LINEAR : gl.NEAREST);
density = createDoubleFBO(0, textureWidth, textureHeight, iFormat , gl.RGBA , texType, ext.support_linear_float ? gl.LINEAR : gl.NEAREST);
velocity = createDoubleFBO(2, textureWidth, textureHeight, iFormatRG, formatRG, texType, ext.support_linear_float ? gl.LINEAR : gl.NEAREST);
divergence = createFBO (4, textureWidth, textureHeight, iFormatRG, formatRG, texType, gl.NEAREST);
curl = createFBO (5, textureWidth, textureHeight, iFormatRG, formatRG, texType, gl.NEAREST);
pressure = createDoubleFBO(6, textureWidth, textureHeight, iFormatRG, formatRG, texType, gl.NEAREST);
@@ -435,6 +435,10 @@ function createFBO (texId, w, h, internalFormat, format, type, param) {
gl.viewport(0, 0, w, h);
gl.clear(gl.COLOR_BUFFER_BIT);
const status = gl.checkFramebufferStatus(gl.FRAMEBUFFER);
if (status != gl.FRAMEBUFFER_COMPLETE)
ga('send', 'event', 'app', 'init', status);
return [texture, fbo, texId];
}
@@ -449,7 +453,7 @@ function createDoubleFBO (texId, w, h, internalFormat, format, type, param) {
get second () {
return fbo2;
},
swap: () => {
swap () {
let temp = fbo1;
fbo1 = fbo2;
fbo2 = temp;
@@ -542,10 +546,10 @@ function update () {
gl.uniform2f(pressureProgram.uniforms.texelSize, 1.0 / textureWidth, 1.0 / textureHeight);
gl.uniform1i(pressureProgram.uniforms.uDivergence, divergence[2]);
pressureTexId = pressure.first[2];
gl.uniform1i(pressureProgram.uniforms.uPressure, pressureTexId);
gl.activeTexture(gl.TEXTURE0 + pressureTexId);
for (let i = 0; i < config.PRESSURE_ITERATIONS; i++) {
gl.bindTexture(gl.TEXTURE_2D, pressure.first[0]);
gl.uniform1i(pressureProgram.uniforms.uPressure, pressureTexId);
blit(pressure.second[1]);
pressure.swap();
}