third_party/WebKit/LayoutTests/fast/canvas/webgl/framebuffer-test.html

   1 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
   2   "http://www.w3.org/TR/html4/loose.dtd">
   3 <html>
   4 <head>
   5 <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
   6 <title>WebGL Framebuffer Test</title>
   7 <script src="../../../resources/js-test.js"></script>
   8 <script src="resources/webgl-test.js"></script>
   9 </head>
  10 <body>
  11 <div id="description"></div>
  12 <div id="console"></div>
  13 <canvas id="canvas" width="2" height="2"> </canvas>
  14 <script>
  15 description("This tests framebuffer/renderbuffer-related functions");
  16
  17 debug("");
  18 debug("Canvas.getContext");
  19
  20 if (window.internals)
  21     window.internals.settings.setWebGLErrorsToConsoleEnabled(false);
  22
  23 var canvas = document.getElementById("canvas");
  24 var gl = create3DContext(canvas);
  25 if (!gl) {
  26   testFailed("context does not exist");
  27 } else {
  28   testPassed("context exists");
  29
  30   debug("");
  31   debug("Checking framebuffer/renderbuffer stuff.");
  32
  33   var value = gl.getFramebufferAttachmentParameter(
  34      gl.FRAMEBUFFER,
  35      gl.COLOR_ATTACHMENT0,
  36      gl.FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE);
  37   assertMsg(gl.getError() == gl.INVALID_OPERATION,
  38             "calling getFramebufferAttachmentParameter on the default framebuffer should generate INVALID_OPERATION.");
  39
  40   assertMsg(gl.checkFramebufferStatus(gl.FRAMEBUFFER) == gl.FRAMEBUFFER_COMPLETE,
  41             "calling checkFramebufferStatus on the default framebuffer should generate FRAMEBUFFER_COMPLETE.");
  42
  43   var tex = gl.createTexture();
  44   gl.bindTexture(gl.TEXTURE_2D, tex);
  45   gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST);
  46   gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
  47   gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
  48   gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
  49   gl.texImage2D(gl.TEXTURE_2D,
  50                 0,                 // level
  51                 gl.RGBA,           // internalFormat
  52                 canvas.width,      // width
  53                 canvas.height,     // height
  54                 0,                 // border
  55                 gl.RGBA,           // format
  56                 gl.UNSIGNED_BYTE,  // type
  57                 null);             // data
  58   gl.framebufferTexture2D(
  59       gl.FRAMEBUFFER,
  60       gl.COLOR_ATTACHMENT0,
  61       gl.TEXTURE_2D,
  62       tex,
  63       0);
  64   assertMsg(gl.getError() == gl.INVALID_OPERATION,
  65             "trying to attach a texture to default framebuffer should generate INVALID_OPERATION.");
  66
  67   gl.framebufferRenderbuffer(
  68       gl.FRAMEBUFFER,
  69       gl.COLOR_ATTACHMENT0,
  70       gl.RENDERBUFFER,
  71       null);
  72   assertMsg(gl.getError() == gl.INVALID_OPERATION,
  73             "trying to detach default renderbuffer from default framebuffer should generate INVALID_OPERATION.");
  74
  75   var rb = gl.createRenderbuffer();
  76   gl.bindRenderbuffer(gl.RENDERBUFFER, rb);
  77   gl.renderbufferStorage(gl.RENDERBUFFER, gl.RGBA4, canvas.width, canvas.height);
  78   assertMsg(gl.getError() == gl.NO_ERROR,
  79             "allocating renderbuffer storage of a newly created renderbuffer should succeed.");
  80
  81   gl.framebufferRenderbuffer(
  82       gl.FRAMEBUFFER,
  83       gl.COLOR_ATTACHMENT0,
  84       gl.RENDERBUFFER,
  85       rb);
  86   assertMsg(gl.getError() == gl.INVALID_OPERATION,
  87             "trying to attach a renderbuffer to the default framebuffer should generate INVALID_OPERATION.");
  88
  89   var fbtex = gl.createTexture();
  90   gl.bindTexture(gl.TEXTURE_2D, fbtex);
  91   gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, canvas.width, canvas.height, 0, gl.RGBA, gl.UNSIGNED_BYTE, null);
  92   var fb = gl.createFramebuffer();
  93
  94   gl.bindFramebuffer(gl.FRAMEBUFFER, fb);
  95   assertMsg(gl.getError() == gl.NO_ERROR,
  96             "binding a newly created framebuffer should succeed.");
  97
  98   var target = 0x8CA8; // GL_READ_FRAMEBUFFER
  99   gl.getFramebufferAttachmentParameter(
 100      target,
 101      gl.COLOR_ATTACHMENT0,
 102      gl.FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE);
 103   assertMsg(gl.getError() == gl.INVALID_ENUM,
 104             "calling getFramebufferAttachmentParameter with target = READ_FRAMEBUFFER should generate INVALID_ENUM.");
 105   assertMsg(gl.checkFramebufferStatus(target) == 0,
 106             "calling checkFramebufferStatus with target = READ_FRAMEBUFFER should return 0.");
 107   assertMsg(gl.getError() == gl.INVALID_ENUM,
 108             "calling checkFramebufferStatus with target = READ_FRAMEBUFFER should generate INVALID_ENUM.");
 109   gl.bindFramebuffer(target, gl.createFramebuffer());
 110   assertMsg(gl.getError() == gl.INVALID_ENUM,
 111             "calling bindFramebuffer with target = READ_FRAMEBUFFER should generate INVALID_ENUM.");
 112   assertMsg(fb == gl.getParameter(gl.FRAMEBUFFER_BINDING),
 113             "calling bindFramebuffer with target = READ_FRAMEBUFFER should not change FRAMEBUFFER_BINDING.");
 114   gl.getFramebufferAttachmentParameter(target, gl.COLOR_ATTACHMENT0, gl.FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE);
 115   assertMsg(gl.getError() == gl.INVALID_ENUM,
 116             "calling getFramebufferAttachmentParameter with target = READ_FRAMEBUFFER should generate INVALID_ENUM.");
 117   gl.framebufferTexture2D(target, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, fbtex, 0);
 118   assertMsg(gl.getError() == gl.INVALID_ENUM,
 119             "calling framebufferTexImage2D with target = READ_FRAMEBUFFER should generate INVALID_ENUM.");
 120   gl.framebufferRenderbuffer(target, gl.COLOR_ATTACHMENT0, gl.RENDERBUFFER, rb);
 121   assertMsg(gl.getError() == gl.INVALID_ENUM,
 122             "calling framebufferRenderbuffer with target = READ_FRAMEBUFFER should generate INVALID_ENUM.");
 123
 124   var attachment = 0x8CE1; // GL_COLOR_ATTACHMENT1
 125   gl.framebufferTexture2D(gl.FRAMEBUFFER, attachment, gl.TEXTURE_2D, fbtex, 0);
 126   assertMsg(gl.getError() == gl.INVALID_ENUM,
 127             "calling framebufferTexImage2D with attachment = COLOR_ATTACHMENT1 should generate INVALID_ENUM.");
 128   gl.framebufferRenderbuffer(gl.FRAMEBUFFER, attachment, gl.RENDERBUFFER, rb);
 129   assertMsg(gl.getError() == gl.INVALID_ENUM,
 130             "calling framebufferRenderbuffer with attachment = COLOR_ATTACHMENT1 should generate INVALID_ENUM.");
 131
 132   gl.getFramebufferAttachmentParameter(gl.FRAMEBUFFER,
 133                                        gl.COLOR_ATTACHMENT0,
 134                                        0x8210); // GL_FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING
 135   assertMsg(gl.getError() == gl.INVALID_ENUM,
 136             "calling getFramebufferAttachmentParameter with pname = GL_FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING should generate INVALID_ENUM.");
 137
 138   gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, fbtex, 0);
 139   assertMsg(gl.getError() == gl.NO_ERROR,
 140             "attaching a texture to a framebuffer should succeed.");
 141
 142   gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, null, 0);
 143   assertMsg(gl.getError() == gl.NO_ERROR,
 144             "detaching a texture from a framebuffer should succeed.");
 145
 146   gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, fbtex, 1);
 147   assertMsg(gl.getError() == gl.INVALID_VALUE,
 148             "calling framebufferTexture2D with non-zero mipmap level should generate INVALID_VALUE.");
 149
 150   gl.framebufferRenderbuffer(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.RENDERBUFFER, rb);
 151   assertMsg(gl.getError() == gl.NO_ERROR,
 152             "attaching a renderbuffer to a framebuffer should succeed.");
 153
 154   gl.framebufferRenderbuffer(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.RENDERBUFFER, null);
 155   assertMsg(gl.getError() == gl.NO_ERROR,
 156             "detaching a renderbuffer from a framebuffer should succeed.");
 157
 158   gl.bindFramebuffer(gl.FRAMEBUFFER, null);
 159   assertMsg(gl.getError() == gl.NO_ERROR,
 160             "binding default (null) framebuffer should succeed.");
 161 }
 162
 163 debug("");
 164
 165 </script>
 166 <script>
 167 </script>
 168
 169 </body>
 170 </html>