зеркало из https://github.com/mozilla/gecko-dev.git
365 строки
9.3 KiB
JavaScript
365 строки
9.3 KiB
JavaScript
/* WebWorker for test_offscreencanvas_*.html */
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(function(){
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var port = null;
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function isInWorker() {
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try {
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return !(self instanceof Window);
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} catch (e) {
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return true;
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}
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}
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function postMessageGeneral(data) {
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if (isInWorker()) {
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if (port) {
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port.postMessage(data);
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} else {
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postMessage(data);
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}
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} else {
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postMessage(data, "*");
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}
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}
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function ok(expect, msg) {
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postMessageGeneral({type: "test", result: !!expect, name: msg});
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}
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function finish() {
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postMessageGeneral({type: "finish"});
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}
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function drawCount(count) {
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postMessageGeneral({type: "draw", count: count});
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}
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function sendBlob(blob) {
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postMessageGeneral({type: "blob", blob: blob});
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}
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function sendImageBitmap(img) {
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if (port) {
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port.postMessage({type: "imagebitmap", bitmap: img});
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} else {
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postMessage({type: "imagebitmap", bitmap: img});
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}
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}
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//--------------------------------------------------------------------
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// WebGL Drawing Functions
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//--------------------------------------------------------------------
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function createDrawFunc(canvas) {
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var gl;
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try {
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gl = canvas.getContext("experimental-webgl");
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} catch (e) {}
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if (!gl) {
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ok(false, "WebGL is unavailable");
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return null;
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}
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var vertSrc = "attribute vec2 position; \
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void main(void) { \
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gl_Position = vec4(position, 0.0, 1.0); \
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}";
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var fragSrc = "precision mediump float; \
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void main(void) { \
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gl_FragColor = vec4(0.0, 1.0, 0.0, 1.0); \
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}";
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// Returns a valid shader, or null on errors.
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var createShader = function(src, t) {
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var shader = gl.createShader(t);
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gl.shaderSource(shader, src);
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gl.compileShader(shader);
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return shader;
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};
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var createProgram = function(vsSrc, fsSrc) {
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var vs = createShader(vsSrc, gl.VERTEX_SHADER);
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var fs = createShader(fsSrc, gl.FRAGMENT_SHADER);
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var prog = gl.createProgram();
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gl.attachShader(prog, vs);
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gl.attachShader(prog, fs);
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gl.linkProgram(prog);
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if (!gl.getProgramParameter(prog, gl.LINK_STATUS)) {
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var str = "Shader program linking failed:";
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str += "\nShader program info log:\n" + gl.getProgramInfoLog(prog);
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str += "\n\nVert shader log:\n" + gl.getShaderInfoLog(vs);
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str += "\n\nFrag shader log:\n" + gl.getShaderInfoLog(fs);
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console.log(str);
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ok(false, "Shader program linking failed");
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return null;
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}
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return prog;
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};
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gl.disable(gl.DEPTH_TEST);
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var program = createProgram(vertSrc, fragSrc);
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ok(program, "Creating shader program");
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program.positionAttr = gl.getAttribLocation(program, "position");
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ok(program.positionAttr >= 0, "position attribute should be valid");
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var vertCoordArr = new Float32Array([
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-1, -1,
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1, -1,
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-1, 1,
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1, 1,
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]);
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var vertCoordBuff = gl.createBuffer();
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gl.bindBuffer(gl.ARRAY_BUFFER, vertCoordBuff);
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gl.bufferData(gl.ARRAY_BUFFER, vertCoordArr, gl.STATIC_DRAW);
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var checkGLError = function(prefix, refValue) {
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if (!refValue) {
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refValue = 0;
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}
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var error = gl.getError();
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ok(error == refValue,
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prefix + 'gl.getError should be 0x' + refValue.toString(16) +
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', was 0x' + error.toString(16) + '.');
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};
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var testPixel = function(x, y, refData, infoString) {
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var pixel = new Uint8Array(4);
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gl.readPixels(x, y, 1, 1, gl.RGBA, gl.UNSIGNED_BYTE, pixel);
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var pixelMatches = pixel[0] == refData[0] &&
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pixel[1] == refData[1] &&
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pixel[2] == refData[2] &&
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pixel[3] == refData[3];
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ok(pixelMatches, infoString);
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};
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var preDraw = function(prefix) {
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gl.clearColor(1.0, 0.0, 0.0, 1.0);
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gl.clear(gl.COLOR_BUFFER_BIT);
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testPixel(0, 0, [255, 0, 0, 255], prefix + 'Should be red before drawing.');
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};
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var postDraw = function(prefix) {
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testPixel(0, 0, [0, 255, 0, 255], prefix + 'Should be green after drawing.');
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};
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gl.useProgram(program);
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gl.enableVertexAttribArray(program.position);
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gl.vertexAttribPointer(program.position, 2, gl.FLOAT, false, 0, 0);
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// Start drawing
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checkGLError('after setup');
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return function(prefix, needCommitFrame) {
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if (prefix) {
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prefix = "[" + prefix + "] ";
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} else {
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prefix = "";
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}
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gl.viewport(0, 0, canvas.width, canvas.height);
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checkGLError(prefix + "[viewport]");
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preDraw(prefix);
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checkGLError(prefix + "[predraw]");
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gl.drawArrays(gl.TRIANGLE_STRIP, 0, 4);
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checkGLError(prefix + "[drawarrays]");
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postDraw(prefix);
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checkGLError(prefix + "[postdraw]");
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if (needCommitFrame) {
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gl.commit();
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checkGLError(prefix + "[commit]");
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}
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checkGLError(prefix);
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};
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}
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/* entry point */
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function entryFunction(testStr, subtests, offscreenCanvas) {
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var test = testStr;
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var canvas = offscreenCanvas;
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if (test == "webgl_imagebitmap") {
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canvas = new OffscreenCanvas(64, 64);
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}
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if (test != "subworker") {
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ok(canvas, "Canvas successfully transfered to worker");
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ok(canvas.getContext, "Canvas has getContext");
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ok(canvas.width == 64, "OffscreenCanvas width should be 64");
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ok(canvas.height == 64, "OffscreenCanvas height should be 64");
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}
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var draw;
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//------------------------------------------------------------------------
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// Basic WebGL test
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//------------------------------------------------------------------------
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if (test == "webgl") {
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draw = createDrawFunc(canvas);
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if (!draw) {
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finish();
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return;
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}
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var count = 0;
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var iid = setInterval(function() {
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if (count++ > 20) {
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clearInterval(iid);
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ok(true, "Worker is done");
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finish();
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return;
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}
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draw("loop " +count, true);
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}, 0);
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}
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//------------------------------------------------------------------------
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// Test dynamic fallback
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//------------------------------------------------------------------------
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else if (test == "webgl_fallback") {
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draw = createDrawFunc(canvas);
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if (!draw) {
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return;
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}
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var count = 0;
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var iid = setInterval(function() {
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++count;
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draw("loop " + count, true);
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drawCount(count);
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}, 0);
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}
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//------------------------------------------------------------------------
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// Test toBlob
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//------------------------------------------------------------------------
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else if (test == "webgl_toblob") {
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draw = createDrawFunc(canvas);
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if (!draw) {
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return;
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}
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draw("", false);
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canvas.toBlob().then(function(blob) {
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sendBlob(blob);
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});
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}
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//------------------------------------------------------------------------
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// Test toImageBitmap
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//------------------------------------------------------------------------
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else if (test == "webgl_imagebitmap") {
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draw = createDrawFunc(canvas);
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if (!draw) {
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return;
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}
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draw("", false);
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var imgBitmap = canvas.transferToImageBitmap();
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sendImageBitmap(imgBitmap);
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}
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//------------------------------------------------------------------------
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// Canvas Size Change from Worker
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//------------------------------------------------------------------------
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else if (test == "webgl_changesize") {
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draw = createDrawFunc(canvas);
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if (!draw) {
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finish();
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return;
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}
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draw("64x64", true);
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setTimeout(function() {
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canvas.width = 128;
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canvas.height = 128;
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draw("Increased to 128x128", true);
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setTimeout(function() {
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canvas.width = 32;
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canvas.width = 32;
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draw("Decreased to 32x32", true);
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setTimeout(function() {
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canvas.width = 64;
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canvas.height = 64;
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draw("Increased to 64x64", true);
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ok(true, "Worker is done");
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finish();
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}, 0);
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}, 0);
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}, 0);
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}
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//------------------------------------------------------------------------
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// Using OffscreenCanvas from sub workers
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//------------------------------------------------------------------------
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else if (test == "subworker") {
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/* subworker tests take a list of tests to run on children */
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var stillRunning = 0;
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subtests.forEach(function (subtest) {
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++stillRunning;
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var subworker = new Worker('offscreencanvas.js');
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subworker.onmessage = function(evt) {
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/* report finish to parent when all children are finished */
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if (evt.data.type == "finish") {
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subworker.terminate();
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if (--stillRunning == 0) {
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ok(true, "Worker is done");
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finish();
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}
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return;
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}
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/* relay all other messages to parent */
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postMessage(evt.data);
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};
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var findTransferables = function(t) {
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if (t.test == "subworker") {
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var result = [];
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t.subtests.forEach(function(test) {
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result = result.concat(findTransferables(test));
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});
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return result;
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} else {
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return [t.canvas];
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}
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};
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subworker.postMessage(subtest, findTransferables(subtest));
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});
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}
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};
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onmessage = function(evt) {
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port = evt.ports[0];
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entryFunction(evt.data.test, evt.data.subtests, evt.data.canvas);
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};
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onconnect = function(evt) {
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port = evt.ports[0];
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port.addEventListener('message', function(evt) {
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entryFunction(evt.data.test, evt.data.subtests, evt.data.canvas);
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});
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port.start();
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};
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if (!isInWorker()) {
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window.entryFunction = entryFunction;
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}
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})();
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