dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/copy-texture-image-same-texture.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 CopyTexImage from/to the same texture 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 </head>
  16 <body>
  17 <canvas id="example" width="64" height="64"></canvas>
  18 <div id="description"></div>
  19 <div id="console"></div>
  20 <script>
  21 "use strict";
  22
  23 var wtu = WebGLTestUtils;
  24 // https://bugs.chromium.org/p/chromium/issues/detail?id=797235
  25 description("This test verifies CopyTexImage2D works if source/destination images belong to the same texture");
  26 debug("");
  27
  28 var gl = wtu.create3DContext("example", undefined, 2);
  29
  30 function enumToString(value) {
  31     return wtu.glEnumToString(gl, value);
  32 }
  33
  34 function checkFramebuffer(expected) {
  35     var actual = gl.checkFramebufferStatus(gl.FRAMEBUFFER);
  36     if (expected.indexOf(actual) < 0) {
  37         var msg = "checkFramebufferStatus expects [";
  38         for (var index = 0; index < expected.length; ++index) {
  39             msg += wtu.glEnumToString(gl, expected[index]);
  40             if (index + 1 < expected.length)
  41                 msg += ", ";
  42         }
  43         msg += "], was " + wtu.glEnumToString(gl, actual);
  44         testFailed(msg);
  45     } else {
  46         var msg = "checkFramebufferStatus got " + wtu.glEnumToString(gl, actual) +
  47                   " as expected";
  48         testPassed(msg);
  49     }
  50 }
  51
  52 function checkTextureLevelColor(texture, level, level_width, level_height, x, y, width, height, color) {
  53     var fbo = gl.createFramebuffer();
  54     gl.bindFramebuffer(gl.FRAMEBUFFER, fbo);
  55     var color_renderable_tex = gl.createTexture();
  56     gl.bindTexture(gl.TEXTURE_2D, color_renderable_tex);
  57     gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA8, level_width, level_height, 0, gl.RGBA, gl.UNSIGNED_BYTE, null);
  58     gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, color_renderable_tex, 0);
  59     checkFramebuffer([gl.FRAMEBUFFER_COMPLETE]);
  60
  61     var program = wtu.setupTexturedQuad(gl);
  62     gl.bindTexture(gl.TEXTURE_2D, texture);
  63     gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_BASE_LEVEL, level);
  64     gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAX_LEVEL, level);
  65     gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST);
  66     gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
  67     gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.REPEAT);
  68     gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.REPEAT);
  69     wtu.clearAndDrawUnitQuad(gl);
  70     wtu.checkCanvasRect(gl, x, y, width, height, color);
  71
  72     gl.deleteTexture(color_renderable_tex);
  73     gl.deleteFramebuffer(fbo);
  74     wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Check texture level color should generate no GL errors.");
  75 }
  76
  77 function testChangeTargetTextureLevelSize() {
  78     debug("");
  79     var fbo = gl.createFramebuffer();
  80     gl.bindFramebuffer(gl.FRAMEBUFFER, fbo);
  81
  82     var texture = gl.createTexture();
  83     wtu.fillTexture(gl, texture, 64, 64, [255, 0, 0, 255], 0, gl.RGBA, gl.UNSIGNED_BYTE, gl.RGBA8);
  84     gl.generateMipmap(gl.TEXTURE_2D);
  85     gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, texture, 1);
  86     checkFramebuffer([gl.FRAMEBUFFER_COMPLETE]);
  87
  88     // fbo source texture is |texture| level 1, 32x32. Target is |texture| level 2, 64x64.
  89     // Only one quarter of the target 64x64 will come from the source.
  90     // Implementations may insert internal commands before copying over 32x32 in order to
  91     // initialize undefined three quarters to 0 as WebGL spec requires. This will actually create
  92     // a 64x64 image at level 2 and make the fbo incomplete, thus, the copying will fail.
  93     gl.copyTexImage2D(gl.TEXTURE_2D, 2, gl.RGBA8, 0, 0, 64, 64, 0);
  94     wtu.glErrorShouldBe(gl, gl.NO_ERROR, "copyTexImage2D should succeed.");
  95     checkFramebuffer([gl.FRAMEBUFFER_INCOMPLETE_ATTACHMENT]);
  96
  97     checkTextureLevelColor(texture, 2, 64, 64, 0, 0, 32, 32, [255, 0, 0, 255]);
  98     checkTextureLevelColor(texture, 2, 64, 64, 0, 32, 64, 32, [0, 0, 0, 0]);
  99     checkTextureLevelColor(texture, 2, 64, 64, 32, 32, 32, 32, [0, 0, 0, 0]);
 100
 101     gl.deleteFramebuffer(fbo);
 102     gl.deleteTexture(texture);
 103     wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Test should generate no GL errors.");
 104 }
 105
 106 function testChangeTargetTextureLevelFormat() {
 107     debug("");
 108     var fbo = gl.createFramebuffer();
 109     gl.bindFramebuffer(gl.FRAMEBUFFER, fbo);
 110
 111     var texture = gl.createTexture();
 112     wtu.fillTexture(gl, texture, 64, 64, [255, 0, 0, 255], 0, gl.RGBA, gl.UNSIGNED_BYTE, gl.RGBA8);
 113     gl.generateMipmap(gl.TEXTURE_2D);
 114     gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, texture, 1);
 115     checkFramebuffer([gl.FRAMEBUFFER_COMPLETE]);
 116
 117     // Using LUNIMANCE_ALPHA format may trigger implementations' emulation code path
 118     // on desktop core profile GL, which might change level 2 image definition first
 119     // and make the fbo incomplete, thus, the actual copying will fail.
 120     gl.copyTexImage2D(gl.TEXTURE_2D, 2, gl.LUMINANCE_ALPHA, 0, 0, 16, 16, 0);
 121     wtu.glErrorShouldBe(gl, gl.NO_ERROR, "copyTexImage2D should succeed.");
 122     checkFramebuffer([gl.FRAMEBUFFER_INCOMPLETE_ATTACHMENT]);
 123
 124     checkTextureLevelColor(texture, 2, 16, 16, 0, 0, 16, 16, [255, 255, 255, 255]);
 125
 126     gl.deleteFramebuffer(fbo);
 127     gl.deleteTexture(texture);
 128     wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Test should generate no GL errors.");
 129 }
 130
 131 if (!gl) {
 132     testFailed("WebGL context does not exist");
 133 } else {
 134     testPassed("WebGL context exists");
 135     testChangeTargetTextureLevelSize();
 136     testChangeTargetTextureLevelFormat();
 137 }
 138
 139 var successfullyParsed = true;
 140 </script>
 141 <script src="../../../js/js-test-post.js"></script>
 142
 143 </body>
 144 </html>