[iOS] Antialiasing doesn't work in WebGL
https://bugs.webkit.org/show_bug.cgi?id=153000
<rdar://problem/9165531>
Reviewed by Alex Christensen.
Source/WebCore:
WebGL has supported platform antialiasing since
the beginning, but we never hooked it up for iOS
because it used a slightly different extension.
Test: fast/canvas/webgl/antialiasing-enabled.html
* platform/graphics/mac/GraphicsContext3DMac.mm:
(WebCore::GraphicsContext3D::endPaint): Resolve the multisampling
buffer once we're done painting.
(WebCore::GraphicsContext3D::~GraphicsContext3D): We never created
the m_compositorTexture RenderBuffer on iOS, so no point deleting
it.
* platform/graphics/opengl/Extensions3DOpenGL.cpp:
(WebCore::Extensions3DOpenGL::supportsExtension): The iOS extension
has a slightly different name.
* platform/graphics/opengl/GraphicsContext3DOpenGL.cpp:
(WebCore::GraphicsContext3D::reshapeFBOs): Make sure to create the
multisample buffer with the correct format.
(WebCore::GraphicsContext3D::resolveMultisamplingIfNecessary): We
need to remember what our bound frame buffer is when we
enter this call, and restore it afterwards. In the middle we can
discard our multisample read buffer once we have resolved it
into the normal framebuffer.
LayoutTests:
New test to check if WebGL antialiasing happened on a rendered canvas.
* fast/canvas/webgl/antialiasing-enabled-expected.txt: Added.
* fast/canvas/webgl/antialiasing-enabled.html: Added.
git-svn-id: http://svn.webkit.org/repository/webkit/trunk@194933 268f45cc-cd09-0410-ab3c-d52691b4dbfc
7 files changed
