dom/canvas/test/webgl-conf/checkout/conformance2/uniforms/draw-with-uniform-blocks.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 description("Regression test for crbug.com/793307 and https://bugzilla.mozilla.org/show_bug.cgi?id=1424258");
  40
  41 var wtu = WebGLTestUtils;
  42 var gl = wtu.create3DContext("example", undefined, 2);
  43
  44 function runTest() {
  45     var program = wtu.setupProgram(gl, ['vshader', 'fshader'], ['a_vertex']);
  46     var uboIndex = gl.INVALID_INDEX;
  47     if (program)
  48         uboIndex = gl.getUniformBlockIndex(program, "color_ubo");
  49     if (!program || uboIndex == gl.INVALID_INDEX) {
  50         testFailed("Loading program failed");
  51         return;
  52     }
  53     testPassed("Loading program succeeded");
  54
  55     var vertices = new Float32Array([
  56         -1, -1, 0,
  57          1, -1, 0,
  58         -1,  1, 0,
  59          1,  1, 0
  60     ]);
  61     var vertexBuf = gl.createBuffer();
  62     gl.bindBuffer(gl.ARRAY_BUFFER, vertexBuf);
  63     gl.bufferData(gl.ARRAY_BUFFER, vertices, gl.STATIC_DRAW);
  64     gl.enableVertexAttribArray(0);
  65     gl.vertexAttribPointer(0, 3, gl.FLOAT, false, 0, 0);
  66
  67     var indexBuf = gl.createBuffer();
  68     gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, indexBuf);
  69     gl.bufferData(gl.ELEMENT_ARRAY_BUFFER, new Int16Array([ 0, 1, 2, 2, 1, 3 ]), gl.STATIC_DRAW);
  70
  71     var uboDataSize = gl.getActiveUniformBlockParameter(
  72         program, uboIndex, gl.UNIFORM_BLOCK_DATA_SIZE);
  73     if (uboDataSize == 0) {
  74         testFailed("uniform block data size invalid");
  75         return;
  76     }
  77
  78     wtu.glErrorShouldBe(gl, gl.NO_ERROR, "No errors from setup");
  79
  80     debug("draw lower triangle - should be red");
  81     var uboBuf1 = gl.createBuffer();
  82     gl.bindBufferBase(gl.UNIFORM_BUFFER, 0, uboBuf1);
  83     gl.bufferData(gl.UNIFORM_BUFFER, uboDataSize, gl.STATIC_DRAW);
  84     gl.bufferSubData(gl.UNIFORM_BUFFER, 0, new Float32Array([ 1, 0, 0, 1 ]));
  85     gl.uniformBlockBinding(program, uboIndex, 0);
  86     gl.drawElements(gl.TRIANGLES, 3, gl.UNSIGNED_SHORT, 0);
  87     wtu.glErrorShouldBe(gl, gl.NO_ERROR, "No errors from draw");
  88
  89     debug("draw upper triangle - should be green");
  90     var uboBuf2 = gl.createBuffer();
  91     gl.bindBufferBase(gl.UNIFORM_BUFFER, 1, uboBuf2);
  92     gl.bufferData(gl.UNIFORM_BUFFER, uboDataSize, gl.STATIC_DRAW);
  93     gl.bufferSubData(gl.UNIFORM_BUFFER, 0, new Float32Array([ 0, 1, 0, 1 ]));
  94     gl.uniformBlockBinding(program, uboIndex, 1);
  95     gl.drawElements(gl.TRIANGLES, 3, gl.UNSIGNED_SHORT, 6);
  96     wtu.glErrorShouldBe(gl, gl.NO_ERROR, "No errors from draw");
  97
  98     var width = 100, height = 100;
  99     wtu.checkCanvasRectColor(gl, 0, 0, width/2-5, height/2-5, [255, 0, 0, 255], 2,
 100         function() { testPassed("lower left should be red"); },
 101         function() { testFailed("lower left should be red"); });
 102     wtu.checkCanvasRectColor(gl, width/2+5, height/2+5, width/2-5, height/2-5, [0, 255, 0, 255], 2,
 103         function() { testPassed("top right should be green"); },
 104         function() { testFailed("top right should be green"); });
 105 }
 106
 107 if (!gl) {
 108     testFailed("WebGL context creation failed");
 109 } else {
 110     testPassed("WebGL context creation succeeded");
 111     runTest();
 112 }
 113
 114 debug("");
 115 var successfullyParsed = true;
 116 </script>
 117 <script src="../../js/js-test-post.js"></script>
 118
 119 </body>
 120 </html>