dom/canvas/test/webgl-conf/checkout/conformance2/uniforms/dependent-buffer-change.html

   1 <!--
   2 Copyright (c) 2019 The Khronos Group Inc.
   3 Use of this source code is governed by an MIT-style license that can be
   4 found in the LICENSE.txt file.
   5 -->
   6
   7 <!DOCTYPE html>
   8 <html>
   9 <head>
  10 <meta charset="utf-8">
  11 <title>WebGL draw with uniform blocks conformance tests</title>
  12 <link rel="stylesheet" href="../../resources/js-test-style.css"/>
  13 <script src="../../js/js-test-pre.js"></script>
  14 <script src="../../js/webgl-test-utils.js"></script>
  15 <script id="vshader" type="x-shader/x-vertex">#version 300 es
  16 in vec4 a_vertex;
  17 void main(void) {
  18   gl_Position = a_vertex;
  19 }
  20 </script>
  21 <script id="fshader" type="x-shader/x-fragment">#version 300 es
  22 precision mediump float;
  23 layout (std140) uniform color_ubo {
  24   vec4 color;
  25 };
  26 out vec4 fragColor;
  27 void main(void) {
  28   fragColor = color;
  29 }
  30 </script>
  31 </head>
  32 <body>
  33 <canvas id="example" width="100", height="100"></canvas>
  34 <div id="description"></div>
  35 <div id="console"></div>
  36 <script>
  37 "use strict";
  38 debug("");
  39
  40 // Ported from: https://github.com/google/angle/blob/master/src/tests/gl_tests/UniformBufferTest.cpp#L1507
  41 description("Regression test for https://bugs.chromium.org/p/chromium/issues/detail?id=792966");
  42
  43 var wtu = WebGLTestUtils;
  44 var gl = wtu.create3DContext("example", undefined, 2);
  45
  46 function runTest() {
  47     var program = wtu.setupProgram(gl, ['vshader', 'fshader'], ['a_vertex']);
  48     var uboIndex = gl.INVALID_INDEX;
  49     if (program)
  50         uboIndex = gl.getUniformBlockIndex(program, "color_ubo");
  51     if (!program || uboIndex == gl.INVALID_INDEX) {
  52         testFailed("Loading program failed");
  53         return;
  54     }
  55     testPassed("Loading program succeeded");
  56
  57     var vertices = new Float32Array([
  58         -1, -1, 0,
  59          1, -1, 0,
  60         -1,  1, 0,
  61          1,  1, 0
  62     ]);
  63     var vertexBuf = gl.createBuffer();
  64     gl.bindBuffer(gl.ARRAY_BUFFER, vertexBuf);
  65     gl.bufferData(gl.ARRAY_BUFFER, vertices, gl.STATIC_DRAW);
  66     gl.enableVertexAttribArray(0);
  67     gl.vertexAttribPointer(0, 3, gl.FLOAT, false, 0, 0);
  68
  69     var indexBuf = gl.createBuffer();
  70     gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, indexBuf);
  71     gl.bufferData(gl.ELEMENT_ARRAY_BUFFER, new Int16Array([ 0, 1, 2, 2, 1, 3 ]), gl.STATIC_DRAW);
  72
  73     var uboDataSize = gl.getActiveUniformBlockParameter(
  74         program, uboIndex, gl.UNIFORM_BLOCK_DATA_SIZE);
  75     if (uboDataSize == 0) {
  76         testFailed("uniform block data size invalid");
  77         return;
  78     }
  79
  80     wtu.glErrorShouldBe(gl, gl.NO_ERROR, "No errors from setup");
  81
  82     debug("draw lower triangle - should be red");
  83     var uboBuf1 = gl.createBuffer();
  84     gl.bindBufferBase(gl.UNIFORM_BUFFER, 0, uboBuf1);
  85     gl.bufferData(gl.UNIFORM_BUFFER, uboDataSize, gl.STATIC_DRAW);
  86     gl.bufferSubData(gl.UNIFORM_BUFFER, 0, new Float32Array([ 1, 0, 0, 1 ]));
  87     gl.uniformBlockBinding(program, uboIndex, 0);
  88     gl.drawElements(gl.TRIANGLES, 3, gl.UNSIGNED_SHORT, 0);
  89     wtu.glErrorShouldBe(gl, gl.NO_ERROR, "No errors from draw");
  90
  91     // Resize the buffer - triggers a re-allocation in the D3D11 back-end.
  92     debug("draw upper triangle - should be green");
  93     var bigData = new Float32Array(128 * 4);
  94     bigData.set([ 0, 1, 0, 1 ]);
  95     gl.bufferData(gl.UNIFORM_BUFFER, bigData, gl.STATIC_DRAW);
  96     gl.drawElements(gl.TRIANGLES, 3, gl.UNSIGNED_SHORT, 6);
  97     wtu.glErrorShouldBe(gl, gl.NO_ERROR, "No errors from draw");
  98
  99     var width = 100, height = 100;
 100     wtu.checkCanvasRectColor(gl, 0, 0, width/2-5, height/2-5, [255, 0, 0, 255], 2,
 101         function() { testPassed("lower left should be red"); },
 102         function() { testFailed("lower left should be red"); });
 103     wtu.checkCanvasRectColor(gl, width/2+5, height/2+5, width/2-5, height/2-5, [0, 255, 0, 255], 2,
 104         function() { testPassed("top right should be green"); },
 105         function() { testFailed("top right should be green"); });
 106 }
 107
 108 if (!gl) {
 109     testFailed("WebGL context creation failed");
 110 } else {
 111     testPassed("WebGL context creation succeeded");
 112     runTest();
 113 }
 114
 115 debug("");
 116 var successfullyParsed = true;
 117 </script>
 118 <script src="../../js/js-test-post.js"></script>
 119
 120 </body>
 121 </html>