зеркало из https://github.com/mozilla/gecko-dev.git
Bug 1280508 - Add regression test. - r=jrmuizel
MozReview-Commit-ID: B4DimyTYdoc
This commit is contained in:
Jeff Gilbert
Родитель
ebc76ad30d
Коммит
a2a360130b
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@ -9,8 +9,8 @@ TEST_DIRS += [
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'gtest'
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]
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# Change the following line to avoid bug 1081323 (clobber after changing a manifest):
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# Add test for webglcontextcreationerror.
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# Change the following line(s) to avoid bug 1081323 (clobber after changing a manifest):
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# * Add a regression test for triangle-then-point rendering.
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MOCHITEST_MANIFESTS += [
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'test/crash/mochitest.ini',
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@ -46,6 +46,9 @@ fail-if = (os == 'android') || (os == 'win' && os_version == '5.1')
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[ensure-exts/test_common.html]
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[regress/test_bug_1268096.html]
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[test_backends.html]
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[test_backbuffer_channels.html]
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fail-if = (os == 'b2g')
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@ -0,0 +1,140 @@
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<!DOCTYPE HTML>
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<html>
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<head>
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<meta charset='UTF-8'/>
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<script src='/tests/SimpleTest/SimpleTest.js'></script>
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<link rel='stylesheet' href='/tests/SimpleTest/test.css'>
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<script src='../webgl-util.js'></script>
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<script id='vs' type='x-shader/x-vertex'>
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attribute vec2 aPosition;
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void main(void) {
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gl_PointSize = 16.0;
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gl_Position = vec4(aPosition, 0, 1);
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}
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</script>
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<script id='fs' type='x-shader/x-fragment'>
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precision mediump float;
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uniform vec4 uColor;
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void main(void) {
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gl_FragColor = uColor;
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}
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</script>
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</head>
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<body>
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<script>
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function GetPixel(gl, x, y) {
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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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return pixel;
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}
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function ColorStr(arr) {
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return '{' + arr.map(function(x) { return '' + x; }).join(', ') + '}';
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}
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function PixelShouldBe(gl, x, y, ref, prefix) {
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if (prefix) {
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prefix += ': ';
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}
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var test = GetPixel(gl, x, y);
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var testStr = ColorStr(test);
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var refStr = ColorStr(ref.map(x => x * 255));
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ok(testStr == refStr, prefix + 'Should be ' + refStr + ', was ' + testStr + '.');
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}
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function GetProgram(gl) {
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var prog = WebGLUtil.createProgramByIds(gl, 'vs', 'fs');
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prog.aPosition = gl.getAttribLocation(prog, 'aPosition');
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ok(prog.aPosition >= 0, '`aPosition` should be valid.');
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prog.uColor = gl.getUniformLocation(prog, 'uColor');
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ok(prog.uColor, '`uColor` should be valid.');
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return prog;
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}
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// Give ourselves a scope to return early from:
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(function () {
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var c = document.createElement('canvas');
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document.body.appendChild(c);
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var gl = c.getContext('webgl', { depth: false, antialias: false });
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if (!gl) {
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todo(false, 'WebGL is unavailable.');
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return;
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}
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////////
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// With default culling, it works fine.
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// The problem seems to be that the virtual quads generated from points are wound 'backwards'.
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gl.enable(gl.CULL_FACE);
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gl.cullFace(gl.BACK); // Cull back faces.
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////////
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var vertArr = new Float32Array([
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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 vbo = gl.createBuffer();
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gl.bindBuffer(gl.ARRAY_BUFFER, vbo);
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gl.bufferData(gl.ARRAY_BUFFER, vertArr, gl.STATIC_DRAW);
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////////
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var triProg = GetProgram(gl);
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var pointProg = GetProgram(gl);
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if (!triProg || !pointProg) {
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ok(false, 'Program linking should succeed.');
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return;
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}
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ok(triProg.aPosition == pointProg.aPosition, 'aPosition should match.');
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gl.enableVertexAttribArray(triProg.aPosition);
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gl.vertexAttribPointer(triProg.aPosition, 2, gl.FLOAT, false, 0, 0);
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////////
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gl.useProgram(triProg);
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var triColor = [1, 0, 0, 1];
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gl.uniform4fv(triProg.uColor, triColor);
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gl.useProgram(pointProg);
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var pointColor = [0, 1, 0, 1];
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gl.uniform4fv(pointProg.uColor, pointColor);
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////////
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gl.clearColor(0, 0, 0, 1);
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gl.clear(gl.COLOR_BUFFER_BIT);
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gl.useProgram(triProg);
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gl.drawArrays(gl.TRIANGLES, 0, 3);
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gl.useProgram(pointProg);
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gl.drawArrays(gl.POINTS, 0, 3);
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////////
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PixelShouldBe(gl, 32, 32, triColor, 'Tri');
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PixelShouldBe(gl, 0, 0, pointColor, 'Point');
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ok(true, 'Test complete');
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})();
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</script>
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</body>
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</html>
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