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<h1 class="title">Qt Canvas 3D Known WebGL Conformance Issues</h1>
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<ul>
<li>No emulation for vertex attrib 0 arrays. Always have vertex attrib 0 array enabled. In desktop OpenGL on some platforms (for example macOS), nothing gets drawn if vertex attrib 0 is not array-enabled. You can use bindAttribLocation() to force a vertex attribute to use location 0, and use enableVertexAttribArray() to make it array-enabled.</li>
<li>No special error detection for binding attributes to overlapping locations (i.e. attribute aliasing) when linking a shader program.</li>
<li>The drawArrays and drawElements calls don't check for the validity of the enabled attributes or the buffers they point to.</li>
<li>Enabling the stencil context attribute also forces the depth attribute to be enabled.</li>
<li>Disabling alpha context attribute does not work on some platforms.</li>
<li>Trying to set canvas size to MAX_VIEWPORT_DIMS may result in OUT_OF_MEMORY on some graphics cards.</li>
<li>The following extra methods exist for contexts: objectNameChanged, nameChanged, canvasChanged, drawingBufferWidthChanged, and drawingBufferHeightChanged.</li>
<li><a href="qml-qtcanvas3d-canvas3d.html">Canvas3D</a> doesn't have toDataUrl() method.</li>
<li><a href="qml-qtcanvas3d-canvas3d.html">Canvas3D</a> item can't be given as a parameter to Context2D.drawImage().</li>
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