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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
| commit | 6bf0a5cb5034a7e684dcc3500e841785237ce2dd (patch) | |
| tree | a68f146d7fa01f0134297619fbe7e33db084e0aa /dom/canvas/test/webgl-mochitest/regress | |
| parent | Initial commit. (diff) | |
| download | thunderbird-upstream.tar.xz thunderbird-upstream.zip | |
Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'dom/canvas/test/webgl-mochitest/regress')
| -rw-r--r-- | dom/canvas/test/webgl-mochitest/regress/test_bug_1268096.html | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/dom/canvas/test/webgl-mochitest/regress/test_bug_1268096.html b/dom/canvas/test/webgl-mochitest/regress/test_bug_1268096.html new file mode 100644 index 0000000000..0262c52d8c --- /dev/null +++ b/dom/canvas/test/webgl-mochitest/regress/test_bug_1268096.html @@ -0,0 +1,140 @@ +<!DOCTYPE HTML> +<html> + <head> + <meta charset='UTF-8'/> + <script src='/tests/SimpleTest/SimpleTest.js'></script> + <link rel='stylesheet' href='/tests/SimpleTest/test.css'> + <script src='../webgl-util.js'></script> + <script id='vs' type='x-shader/x-vertex'> + +attribute vec2 aPosition; + +void main(void) { + gl_PointSize = 16.0; + gl_Position = vec4(aPosition, 0, 1); +} + + </script> + <script id='fs' type='x-shader/x-fragment'> + +precision mediump float; + +uniform vec4 uColor; + +void main(void) { + gl_FragColor = uColor; +} + + </script> + </head> + <body> + <script> + +function GetPixel(gl, x, y) { + var pixel = new Uint8Array(4); + gl.readPixels(x, y, 1, 1, gl.RGBA, gl.UNSIGNED_BYTE, pixel); + return pixel; +} + +function ColorStr(arr) { + return '{' + arr.map(function(x) { return '' + x; }).join(', ') + '}'; +} + +function PixelShouldBe(gl, x, y, ref, prefix) { + if (prefix) { + prefix += ': '; + } + + var test = GetPixel(gl, x, y); + + var testStr = ColorStr(test); + var refStr = ColorStr(ref.map(value => value * 255)); + ok(testStr == refStr, prefix + 'Should be ' + refStr + ', was ' + testStr + '.'); +} + +function GetProgram(gl) { + var prog = WebGLUtil.createProgramByIds(gl, 'vs', 'fs'); + + prog.aPosition = gl.getAttribLocation(prog, 'aPosition'); + ok(prog.aPosition >= 0, '`aPosition` should be valid.'); + + prog.uColor = gl.getUniformLocation(prog, 'uColor'); + ok(prog.uColor, '`uColor` should be valid.'); + + return prog; +} + +// Give ourselves a scope to return early from: +(function () { + var c = document.createElement('canvas'); + document.body.appendChild(c); + var gl = c.getContext('webgl', { depth: false, antialias: false }); + if (!gl) { + todo(false, 'WebGL is unavailable.'); + return; + } + + //////// + + // With default culling, it works fine. + // The problem seems to be that the virtual quads generated from points are wound 'backwards'. + gl.enable(gl.CULL_FACE); + gl.cullFace(gl.BACK); // Cull back faces. + + //////// + + var vertArr = new Float32Array([ + -1, -1, + +1, -1, + -1, +1, + ]); + + var vbo = gl.createBuffer(); + gl.bindBuffer(gl.ARRAY_BUFFER, vbo); + gl.bufferData(gl.ARRAY_BUFFER, vertArr, gl.STATIC_DRAW); + + //////// + + var triProg = GetProgram(gl); + var pointProg = GetProgram(gl); + if (!triProg || !pointProg) { + ok(false, 'Program linking should succeed.'); + return; + } + + ok(triProg.aPosition == pointProg.aPosition, 'aPosition should match.'); + gl.enableVertexAttribArray(triProg.aPosition); + gl.vertexAttribPointer(triProg.aPosition, 2, gl.FLOAT, false, 0, 0); + + //////// + + gl.useProgram(triProg); + var triColor = [1, 0, 0, 1]; + gl.uniform4fv(triProg.uColor, triColor); + + gl.useProgram(pointProg); + var pointColor = [0, 1, 0, 1]; + gl.uniform4fv(pointProg.uColor, pointColor); + + //////// + + gl.clearColor(0, 0, 0, 1); + gl.clear(gl.COLOR_BUFFER_BIT); + + gl.useProgram(triProg); + gl.drawArrays(gl.TRIANGLES, 0, 3); + + gl.useProgram(pointProg); + gl.drawArrays(gl.POINTS, 0, 3); + + //////// + + PixelShouldBe(gl, 32, 32, triColor, 'Tri'); + PixelShouldBe(gl, 0, 0, pointColor, 'Point'); + + ok(true, 'Test complete'); +})(); + + </script> + </body> +</html> |