dom/canvas/test/webgl-conf/checkout/conformance2/buffers/uniform-buffers-second-compile.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 Uniform Buffers should work on second compile</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'>
  16 #version 300 es
  17
  18 layout(location=0) in vec4 position;
  19 layout(std140, column_major) uniform Uniforms1 {
  20     mat4 transform;
  21 };
  22 out vec3 vColor;
  23
  24 void main() {
  25     gl_Position = transform * position;
  26 }
  27 </script>
  28 <script id='fshader' type='x-shader/x-fragment'>
  29 #version 300 es
  30 precision highp float;
  31
  32 layout(std140) uniform Uniforms2 {
  33     vec4 color;
  34 };
  35 out vec4 fragColor;
  36
  37 void main(){
  38     fragColor = color;
  39 }
  40 </script>
  41 </head>
  42 <body>
  43 <div id="description"></div>
  44 <canvas id="canvas" style="width: 50px; height: 50px;"> </canvas>
  45 <div id="console"></div>
  46 <script>
  47 "use strict";
  48 description("This test verifies that getUniformBlockIndex isn't broken on second compile.");
  49
  50 debug("This is a regression test for <a href='http://crbug.com/716018'>http://crbug.com/716018</a>");
  51 debug("");
  52
  53 var wtu = WebGLTestUtils;
  54 var canvas = document.getElementById("canvas");
  55 var gl = wtu.create3DContext(canvas, null, 2);
  56
  57 // Initialize
  58 gl.clearColor(0, 0, 0, 1);
  59 var vsSource = document.getElementById("vshader").text.trim();
  60 var fsSource = document.getElementById("fshader").text.trim();
  61
  62 function runTest() {
  63     // Run twice to make sure that the second build does not cause errors
  64     // (i.e. due to caching).
  65     for (var i = 0; i < 2; ++i) {
  66         debug("Compile/test iteration " + i);
  67
  68         var vertexShader = gl.createShader(gl.VERTEX_SHADER);
  69         gl.shaderSource(vertexShader, vsSource);
  70         gl.compileShader(vertexShader);
  71         // Note: if COMPILE_STATUS is retrieved here, it hides the bug.
  72
  73         var fragmentShader = gl.createShader(gl.FRAGMENT_SHADER);
  74         gl.shaderSource(fragmentShader, fsSource);
  75         gl.compileShader(fragmentShader);
  76         // Note: if COMPILE_STATUS is retrieved here, it hides the bug.
  77
  78         var program = gl.createProgram();
  79         gl.attachShader(program, vertexShader);
  80         gl.attachShader(program, fragmentShader);
  81         gl.linkProgram(program);
  82
  83         gl.useProgram(program);
  84
  85         var uniforms1Location = gl.getUniformBlockIndex(program, "Uniforms1");
  86         gl.uniformBlockBinding(program, uniforms1Location, 0);
  87         wtu.glErrorShouldBe(gl, gl.NO_ERROR, "uniforms1Location was " + uniforms1Location);
  88
  89         var uniforms2Location = gl.getUniformBlockIndex(program, "Uniforms2");
  90         gl.uniformBlockBinding(program, uniforms2Location, 1);
  91         wtu.glErrorShouldBe(gl, gl.NO_ERROR, "uniforms2Location was " + uniforms2Location);
  92
  93         debug("");
  94     }
  95 }
  96
  97 runTest();
  98
  99 var successfullyParsed = true;
 100 </script>
 101
 102 <script src="../../js/js-test-post.js"></script>
 103 </body>
 104 </html>