mirror_js/WebGL-Fluid-Simulation
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update script

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Pavel Dobryakov
2017-11-29 19:52:03 +03:00
parent f9c4aba0e3
commit 86061ecc50
1 changed files with 14 additions and 11 deletions
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script.js
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@@ -20,7 +20,6 @@ var splatStack = [];
var ref = getWebGLContext(canvas);
var gl = ref.gl;
var ext = ref.ext;
var support_linear_float = ref.support_linear_float;
startGUI();
function getWebGLContext (canvas) {
@@ -43,7 +42,7 @@ function getWebGLContext (canvas) {
var internalFormat = isWebGL2 ? gl.RGBA16F : gl.RGBA;
var internalFormatRG = isWebGL2 ? gl.RG16F : gl.RGBA;
var formatRG = isWebGL2 ? gl.RG : gl.RGBA;
var texType = isWebGL2 ? gl.HALF_FLOAT : halfFloat.HALF_FLOAT_OES;
var halfFloatTexType = isWebGL2 ? gl.HALF_FLOAT : halfFloat.HALF_FLOAT_OES;
return {
gl: gl,
@@ -51,9 +50,9 @@ function getWebGLContext (canvas) {
internalFormat: internalFormat,
internalFormatRG: internalFormatRG,
formatRG: formatRG,
texType: texType
},
support_linear_float: support_linear_float
halfFloatTexType: halfFloatTexType,
support_linear_float: support_linear_float
}
};
}
@@ -171,7 +170,7 @@ initFramebuffers();
var clearProgram = new GLProgram(baseVertexShader, clearShader);
var displayProgram = new GLProgram(baseVertexShader, displayShader);
var splatProgram = new GLProgram(baseVertexShader, splatShader);
var advectionProgram = new GLProgram(baseVertexShader, support_linear_float ? advectionShader : advectionManualFilteringShader);
var advectionProgram = new GLProgram(baseVertexShader, ext.support_linear_float ? advectionShader : advectionManualFilteringShader);
var divergenceProgram = new GLProgram(baseVertexShader, divergenceShader);
var curlProgram = new GLProgram(baseVertexShader, curlShader);
var vorticityProgram = new GLProgram(baseVertexShader, vorticityShader);
@@ -185,10 +184,10 @@ function initFramebuffers () {
var iFormat = ext.internalFormat;
var iFormatRG = ext.internalFormatRG;
var formatRG = ext.formatRG;
var texType = ext.texType;
var 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);
@@ -210,6 +209,10 @@ function createFBO (texId, w, h, internalFormat, format, type, param) {
gl.viewport(0, 0, w, h);
gl.clear(gl.COLOR_BUFFER_BIT);
var status = gl.checkFramebufferStatus(gl.FRAMEBUFFER);
if (status != gl.FRAMEBUFFER_COMPLETE)
{ ga('send', 'event', 'app', 'init', status); }
return [texture, fbo, texId];
}
@@ -224,7 +227,7 @@ function createDoubleFBO (texId, w, h, internalFormat, format, type, param) {
get second () {
return fbo2;
},
swap: function () {
swap: function swap () {
var temp = fbo1;
fbo1 = fbo2;
fbo2 = temp;
@@ -317,10 +320,10 @@ 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 (var i$1 = 0; i$1 < config.PRESSURE_ITERATIONS; i$1++) {
gl.bindTexture(gl.TEXTURE_2D, pressure.first[0]);
gl.uniform1i(pressureProgram.uniforms.uPressure, pressureTexId);
blit(pressure.second[1]);
pressure.swap();
}