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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /dom/canvas/test/webgl-conf/checkout/conformance/rendering/culling.html | |
parent | Initial commit. (diff) | |
download | firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip |
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'dom/canvas/test/webgl-conf/checkout/conformance/rendering/culling.html')
-rw-r--r-- | dom/canvas/test/webgl-conf/checkout/conformance/rendering/culling.html | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance/rendering/culling.html b/dom/canvas/test/webgl-conf/checkout/conformance/rendering/culling.html new file mode 100644 index 0000000000..74321f5cdd --- /dev/null +++ b/dom/canvas/test/webgl-conf/checkout/conformance/rendering/culling.html @@ -0,0 +1,127 @@ +<!-- +Copyright (c) 2019 The Khronos Group Inc. +Use of this source code is governed by an MIT-style license that can be +found in the LICENSE.txt file. +--> + +<!DOCTYPE html> +<html> +<head> +<meta charset="utf-8"> +<link rel="stylesheet" href="../../resources/js-test-style.css"/> +<script src="../../js/js-test-pre.js"></script> +<script src="../../js/webgl-test-utils.js"></script> +<script id="vshader" type="x-shader/x-vertex"> +attribute vec2 pos; + +void main() +{ + gl_Position = vec4(pos, 0, 1); +} +</script> + +<script id="fshader" type="x-shader/x-fragment"> +precision mediump float; +uniform vec4 col; + +void main() +{ + gl_FragColor = col; +} +</script> + +<script> +"use strict"; +var wtu = WebGLTestUtils; + +function draw(gl, arr, colLoc, col) { + var vertices = new Float32Array(arr); + var vertBuf = gl.createBuffer(); + gl.bindBuffer(gl.ARRAY_BUFFER, vertBuf); + gl.bufferData(gl.ARRAY_BUFFER, vertices, gl.STATIC_DRAW); + gl.vertexAttribPointer(0, 2, gl.FLOAT, false, 0, 0); + gl.uniform4fv(colLoc, col); + gl.drawArrays(gl.TRIANGLE_STRIP, 0, vertices.length / 2); +} + +function clear(gl, col) { + gl.clearColor(col[0], col[1], col[2], col[3]); + gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT); +} + +function check(gl, winding, shoulddraw) { + var msg = winding + ' face was ' + (shoulddraw ? '' : 'not ') + 'drawn.'; + wtu.checkCanvasRect(gl, 0, 0, 1, 1, [0, 255, 0, 255], msg); +} + +function runTest() { + var cwVertices = [-1, -1, -1, 1, 1, -1, 1, 1]; + var ccwVertices = [-1, 1, -1, -1, 1, 1, 1, -1]; + var red = [1, 0, 0, 1]; + var green = [0, 1, 0, 1]; + var ok; + + var gl = wtu.create3DContext('testbed', { antialias: false }); + if (!gl) { + testFailed('could not create context'); + return; + } + var program = wtu.setupProgram(gl, ['vshader', 'fshader'], ['pos']); + var colLoc = gl.getUniformLocation(program, 'col'); + + gl.enableVertexAttribArray(0); + + debug('CULL_FACE should be off by default'); + clear(gl, red); + draw(gl, ccwVertices, colLoc, green); + check(gl, 'CCW', true); + clear(gl, red); + draw(gl, cwVertices, colLoc, green); + check(gl, 'CW', true); + + debug('Enabling CULL_FACE'); + gl.enable(gl.CULL_FACE); + + debug('BACK and CCW should be set by default'); + clear(gl, red); + draw(gl, ccwVertices, colLoc, green); + check(gl, 'CCW', true); + clear(gl, green); + draw(gl, cwVertices, colLoc, red); + check(gl, 'CW', false); + + var tests = [{ cullFace : 'BACK', frontFace : 'CCW', drawCCW : true, drawCW : false}, + { cullFace : 'BACK', frontFace : 'CW', drawCCW : false, drawCW : true}, + { cullFace : 'FRONT', frontFace : 'CCW', drawCCW : false, drawCW : true }, + { cullFace : 'FRONT', frontFace : 'CW', drawCCW : true, drawCW : false}, + { cullFace : 'FRONT_AND_BACK', frontFace : 'CCW', drawCCW : false, drawCW : false}, + { cullFace : 'FRONT_AND_BACK', frontFace : 'CW', drawCCW : false, drawCW : false}]; + + for (var i = 0; i < tests.length; ++i) { + var t = tests[i]; + debug('Setting ' + t.cullFace + ' and ' + t.frontFace); + gl.cullFace(gl[t.cullFace]); + gl.frontFace(gl[t.frontFace]); + clear(gl, t.drawCCW ? red : green); + draw(gl, ccwVertices, colLoc, t.drawCCW ? green : red); + check(gl, 'CCW', t.drawCCW); + clear(gl, t.drawCW ? red : green); + draw(gl, cwVertices, colLoc, t.drawCW ? green : red); + check(gl, 'CW', t.drawCW); + } +} +</script> +</head> +<body> +<canvas id="testbed" width="16" height="16" style="width:50px; height:50px"></canvas> +<div id="description"></div> +<div id="console"></div> +<script> +"use strict"; +description('Verify that culling works'); +runTest(); +var successfullyParsed = true; +</script> +<script src="../../js/js-test-post.js"></script> +</body> +</html> |