dom/canvas/test/webgl-conf/checkout/conformance2/rendering/framebuffer-render-to-layer-angle-issue.html

   1 <!--
   2 Copyright (c) 2020 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>WebGL2 can render to layers in 3D texture angle issue check</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 void main(void) {
  17   gl_Position = vec4(0, 0, 0, 1);
  18   gl_PointSize = 1.0;
  19 }
  20 </script>
  21 <script id="fshader" type="x-shader/x-fragment">#version 300 es
  22 precision mediump float;
  23 out vec4 outColor;
  24 void main() {
  25   outColor = vec4(0, 1, 0, 1);
  26 }
  27 </script>
  28 </head>
  29 <body>
  30 <canvas id="example" width="1", height="1"></canvas>
  31 <div id="description"></div>
  32 <a href='https://bugs.chromium.org/p/angleproject/issues/detail?id=4417'>ANGLE issue #4417</a>
  33 <div id="console"></div>
  34 <script>
  35 "use strict";
  36 debug("");
  37
  38 description("Test that WebGL2 can render to layers in 3D textures");
  39
  40 var wtu = WebGLTestUtils;
  41 var gl = wtu.create3DContext("example", undefined, 2);
  42
  43 if (!gl) {
  44     testFailed("WebGL context creation failed");
  45 } else {
  46     testPassed("WebGL context creation succeeded");
  47     runTest();
  48 }
  49
  50 function runTest() {
  51   const fb = gl.createFramebuffer();
  52   gl.bindFramebuffer(gl.FRAMEBUFFER, fb);
  53
  54   const tex = gl.createTexture();
  55   gl.bindTexture(gl.TEXTURE_3D, tex);
  56   gl.texParameteri(gl.TEXTURE_3D, gl.TEXTURE_MIN_FILTER, gl.LINEAR_MIPMAP_LINEAR);
  57   gl.texParameteri(gl.TEXTURE_3D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
  58   gl.texImage3D(gl.TEXTURE_3D, 0, gl.RGBA8, gl.canvas.width, gl.canvas.height, 2, 0, gl.RGBA, gl.UNSIGNED_BYTE, null);
  59
  60   for (let i = 0; i < 2; i++) {
  61     gl.framebufferTextureLayer(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, tex, 0, i);
  62
  63     const rb = gl.createRenderbuffer();
  64     gl.bindRenderbuffer(gl.RENDERBUFFER, rb);
  65     gl.renderbufferStorage(gl.RENDERBUFFER, gl.DEPTH_COMPONENT16, gl.canvas.width, gl.canvas.height);
  66     gl.framebufferRenderbuffer(gl.FRAMEBUFFER, gl.DEPTH_ATTACHMENT, gl.RENDERBUFFER, rb);
  67
  68     wtu.framebufferStatusShouldBe(gl, gl.FRAMEBUFFER, gl.FRAMEBUFFER_COMPLETE);
  69
  70     const program = wtu.setupProgram(gl, ['vshader','fshader'], [], console.log.bind(console));
  71     gl.useProgram(program);
  72
  73     gl.drawArrays(gl.POINTS, 0, 1);
  74
  75     wtu.glErrorShouldBe(gl, gl.NO_ERROR, `No errors`);
  76     wtu.checkCanvas(gl, [0, 255, 0, 255], `framebuffer layer ${i} should be green`);
  77   }
  78
  79   // make sure we were not rendering to the canvas.
  80   gl.bindFramebuffer(gl.FRAMEBUFFER, null)
  81   wtu.checkCanvas(gl, [0, 0, 0, 0], "canvas should be zero");
  82 }
  83
  84 debug("");
  85 var successfullyParsed = true;
  86 </script>
  87 <script src="../../js/js-test-post.js"></script>
  88
  89 </body>
  90 </html>