dom/canvas/test/webgl-conf/checkout/conformance/uniforms/gl-uniform-struct-unused.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 struct Conformance Test</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 </head>
  16 <body>
  17 <div id="description"></div>
  18 <div id="console"></div>
  19 <canvas id="example" width="2" height="2"> </canvas>
  20
  21 <script id="vshader" type="x-shader/x-vertex">
  22 attribute vec4 vPosition;
  23 uniform vec4 u0;
  24 struct MyStruct {
  25   vec4 var1;
  26   vec4 var2;
  27   vec4 var3;
  28   vec4 var4;
  29 };
  30 uniform MyStruct u1;
  31 uniform vec4 u2;
  32 varying vec4 v_color;
  33 void main()
  34 {
  35   gl_Position = vPosition;
  36   v_color = (u0 + u2 + u1.var1) - vec4(2.0);
  37 }
  38 </script>
  39
  40 <script id="fshader" type="x-shader/x-fragment">
  41 precision mediump float;
  42 varying vec4 v_color;
  43 void main()
  44 {
  45   gl_FragColor = v_color;
  46 }
  47 </script>
  48
  49 <script>
  50 "use strict";
  51 description("This test ensures WebGL implementations handle unused members at the end of structs correctly.");
  52
  53 var wtu = WebGLTestUtils;
  54 var gl = wtu.create3DContext();
  55 var c = document.getElementById("console");
  56 program = wtu.setupProgram(gl, ["vshader", "fshader"], [ "vPosition"]);
  57
  58 wtu.setupUnitQuad(gl, [0, 1]);
  59 var white = [1.0, 1.0, 1.0, 1.0];
  60 var black = [0.0, 0.0, 0.0, 0.0];
  61 gl.uniform4fv(gl.getUniformLocation(program, "u0"), white);
  62 gl.uniform4fv(gl.getUniformLocation(program, "u1.var1"), white);
  63 gl.uniform4fv(gl.getUniformLocation(program, "u1.var2"), black);
  64 gl.uniform4fv(gl.getUniformLocation(program, "u1.var3"), black);
  65 gl.uniform4fv(gl.getUniformLocation(program, "u1.var4"), black);
  66 gl.uniform4fv(gl.getUniformLocation(program, "u2"), white);
  67 wtu.clearAndDrawUnitQuad(gl);
  68 wtu.checkCanvas(gl, [255, 255, 255, 255], "should be white", 0);
  69 gl.uniform4fv(gl.getUniformLocation(program, "u1.var2"), black);
  70 gl.uniform4fv(gl.getUniformLocation(program, "u1.var3"), black);
  71 gl.uniform4fv(gl.getUniformLocation(program, "u1.var4"), black);
  72 wtu.clearAndDrawUnitQuad(gl, [0, 0, 0, 0]);
  73 wtu.checkCanvas(gl, [255, 255, 255, 255], "should still be white", 0);
  74
  75 wtu.glErrorShouldBe(gl, gl.NO_ERROR, "should be no GL errors");
  76 debug("");
  77 var successfullyParsed = true;
  78
  79 </script>
  80 <script src="../../js/js-test-post.js"></script>
  81
  82 </body>
  83 </html>