本文整理汇总了C++中GrContext::createPlatformSurface方法的典型用法代码示例。如果您正苦于以下问题：C++ GrContext::createPlatformSurface方法的具体用法？C++ GrContext::createPlatformSurface怎么用？C++ GrContext::createPlatformSurface使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类GrContext的用法示例。
在下文中一共展示了GrContext::createPlatformSurface方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: createFrameBuffer
bool LayerTextureUpdaterSkPicture::createFrameBuffer()
{
ASSERT(!m_fbo);
ASSERT(!m_bufferSize.isEmpty());
// SKIA only needs color and stencil buffers, not depth buffer.
// But it is very uncommon for cards to support color + stencil FBO config.
// The most common config is color + packed-depth-stencil.
// Instead of iterating through all possible FBO configs, we only try the
// most common one here.
// FIXME: Delegate the task of creating frame-buffer to SKIA.
// It has all necessary code to iterate through all possible configs
// and choose the one most suitable for its purposes.
Extensions3D* extensions = context()->getExtensions();
if (!extensions->supports("GL_OES_packed_depth_stencil"))
return false;
extensions->ensureEnabled("GL_OES_packed_depth_stencil");
// Create and bind a frame-buffer-object.
m_fbo = context()->createFramebuffer();
if (!m_fbo)
return false;
context()->bindFramebuffer(GraphicsContext3D::FRAMEBUFFER, m_fbo);
// We just need to create a stencil buffer for FBO.
// The color buffer (texture) will be provided by tiles.
// SKIA does not need depth buffer.
m_depthStencilBuffer = context()->createRenderbuffer();
if (!m_depthStencilBuffer) {
deleteFrameBuffer();
return false;
}
context()->bindRenderbuffer(GraphicsContext3D::RENDERBUFFER, m_depthStencilBuffer);
context()->renderbufferStorage(GraphicsContext3D::RENDERBUFFER, Extensions3D::DEPTH24_STENCIL8, m_bufferSize.width(), m_bufferSize.height());
context()->framebufferRenderbuffer(GraphicsContext3D::FRAMEBUFFER, GraphicsContext3D::DEPTH_ATTACHMENT, GraphicsContext3D::RENDERBUFFER, m_depthStencilBuffer);
context()->framebufferRenderbuffer(GraphicsContext3D::FRAMEBUFFER, GraphicsContext3D::STENCIL_ATTACHMENT, GraphicsContext3D::RENDERBUFFER, m_depthStencilBuffer);
// Create a skia gpu canvas.
GrContext* skiaContext = m_context->grContext();
GrPlatformSurfaceDesc targetDesc;
targetDesc.reset();
targetDesc.fSurfaceType = kRenderTarget_GrPlatformSurfaceType;
targetDesc.fRenderTargetFlags = kNone_GrPlatformRenderTargetFlagBit;
targetDesc.fWidth = m_bufferSize.width();
targetDesc.fHeight = m_bufferSize.height();
targetDesc.fConfig = kRGBA_8888_GrPixelConfig;
targetDesc.fStencilBits = 8;
targetDesc.fPlatformRenderTarget = m_fbo;
SkAutoTUnref<GrRenderTarget> target(static_cast<GrRenderTarget*>(skiaContext->createPlatformSurface(targetDesc)));
SkAutoTUnref<SkDevice> device(new SkGpuDevice(skiaContext, target.get()));
m_canvas = adoptPtr(new SkCanvas(device.get()));
context()->bindFramebuffer(GraphicsContext3D::FRAMEBUFFER, 0);
return true;
}