https://bugs.webkit.org/show_bug.cgi?id=90567

Patch by Joshua Netterfield <jnetterfield@rim.com> on 2012-07-09
Reviewed by Rob Buis.

This patch cleans up code for WebGL on OpenGLES platforms which use
GraphicsContext3DOpenGL* and Extensions3DOpenGL*. Although
GraphicsContext3DOpenGL was already split into GraphicsContext3DOpenGL,
GraphicsContext3DOpenGLCommon, and  GraphicsContext3DOpenGLES, this patch
is an attempt to refactor this code in a way that will help BlackBerry and
other teams support WebGL on mobile platforms with as little use of
"#IF USE(OPENGL_ES_2)" in common code as possible. Also included is the
separation of Extensions3DOpenGL into Extensions3DOpenGLCommon,
Extensions3DOpenGL, and Extensions3DOpenGLES as well as the introduction
of OpenGLESShims.

This patch is created in large part by Jonathan Feldstein.

No new tests: no new behaviour.

* PlatformBlackBerry.cmake: Recognize BlackBerry as OPENGL ES, add new files to build
* Target.pri: Add new Extensions3DOpenGL* to WebGL builds
* platform/graphics/GraphicsContext3D.h: Add validateDepthStencil, make systemAllowsMultisamplingOnATICards a a member function.
(WebCore):
* platform/graphics/OpenGLESShims.h: Added.
* platform/graphics/opengl/Extensions3DOpenGL.cpp: Move code to Extensions3DOpenGLCommon where possible
(WebCore::Extensions3DOpenGL::Extensions3DOpenGL): Reflect that it is now inherits Extensions3DCommon
(WebCore::Extensions3DOpenGL::supportsExtension): Contains OpenGL specific code from supports
(WebCore):
(WebCore::Extensions3DOpenGL::getExtensions): Returns a list of extensions
* platform/graphics/opengl/Extensions3DOpenGL.h: Remove functions now in Extensions3DOpenGLCommon
(WebCore):
(Extensions3DOpenGL):
* platform/graphics/opengl/Extensions3DOpenGLCommon.cpp: Added.
(WebCore):
(WebCore::Extensions3DOpenGLCommon::Extensions3DOpenGLCommon):
(WebCore::Extensions3DOpenGLCommon::~Extensions3DOpenGLCommon):
(WebCore::Extensions3DOpenGLCommon::supports):
(WebCore::Extensions3DOpenGLCommon::ensureEnabled):
(WebCore::Extensions3DOpenGLCommon::isEnabled):
(WebCore::Extensions3DOpenGLCommon::getGraphicsResetStatusARB):
(WebCore::Extensions3DOpenGLCommon::getTranslatedShaderSourceANGLE): Existed before, but did nothing. Now does what is says it does.
(WebCore::Extensions3DOpenGLCommon::initializeAvailableExtensions): Moved from Extensions3DOpenGL::supports
* platform/graphics/opengl/Extensions3DOpenGLCommon.h: Copied from Source/WebCore/platform/graphics/opengl/Extensions3DOpenGL.h.
(WebCore):
(Extensions3DOpenGLCommon):
* platform/graphics/opengl/Extensions3DOpenGLES.cpp: Added.
(WebCore):
(WebCore::Extensions3DOpenGLES::Extensions3DOpenGLES):
(WebCore::Extensions3DOpenGLES::~Extensions3DOpenGLES):
(WebCore::Extensions3DOpenGLES::framebufferTexture2DMultisampleIMG):
(WebCore::Extensions3DOpenGLES::renderbufferStorageMultisampleIMG):
(WebCore::Extensions3DOpenGLES::createVertexArrayOES):
(WebCore::Extensions3DOpenGLES::deleteVertexArrayOES):
(WebCore::Extensions3DOpenGLES::isVertexArrayOES):
(WebCore::Extensions3DOpenGLES::bindVertexArrayOES):
(WebCore::Extensions3DOpenGLES::supportsExtension): Contains OpenGLES specific code from supports
(WebCore::Extensions3DOpenGLES::getExtensions):
* platform/graphics/opengl/Extensions3DOpenGLES.h: Copied from Source/WebCore/platform/graphics/opengl/Extensions3DOpenGL.h.
(WebCore):
(Extensions3DOpenGLES):
* platform/graphics/opengl/GraphicsContext3DOpenGL.cpp:
(WebCore::GraphicsContext3D::validateAttributes):
(WebCore):
(WebCore::GraphicsContext3D::renderbufferStorage):
(WebCore::GraphicsContext3D::texImage2D):
(WebCore::GraphicsContext3D::systemAllowsMultisamplingOnATICards): Now a member function.
(WebCore::GraphicsContext3D::getExtensions):
* platform/graphics/opengl/GraphicsContext3DOpenGLCommon.cpp:
(WebCore::GraphicsContext3D::validateDepthStencil):
(WebCore::GraphicsContext3D::clear):
(WebCore::GraphicsContext3D::isTexture):
(WebCore):
(WebCore::GraphicsContext3D::lineWidth):
(WebCore::GraphicsContext3D::linkProgram):
(WebCore::GraphicsContext3D::pixelStorei):
(WebCore::GraphicsContext3D::polygonOffset):
(WebCore::GraphicsContext3D::readPixels):
(WebCore::GraphicsContext3D::deleteBuffer):
* platform/graphics/opengl/GraphicsContext3DOpenGLES.cpp:
(WebCore::GraphicsContext3D::releaseShaderCompiler):
(WebCore::GraphicsContext3D::readPixelsAndConvertToBGRAIfNecessary):
(WebCore::GraphicsContext3D::validateAttributes):
(WebCore):
(WebCore::GraphicsContext3D::getExtensions):
(WebCore::GraphicsContext3D::systemAllowsMultisamplingOnATICards): Now a member function.
* platform/graphics/qt/GraphicsContext3DQt.cpp:
(WebCore):
(WebCore::GraphicsContext3D::releaseShaderCompiler):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@122116 268f45cc-cd09-0410-ab3c-d52691b4dbfc