skwindow::internal::GLWindowContext Class Reference

#include <GLWindowContext.h>

Inheritance diagram for skwindow::internal::GLWindowContext:

Public Member Functions
sk_sp< SkSurface >	getBackbufferSurface () override
bool	isValid () override
void	resize (int w, int h) override
void	setDisplayParams (const DisplayParams &params) override
Public Member Functions inherited from skwindow::WindowContext
	WindowContext (const DisplayParams &)
virtual	~WindowContext ()
void	swapBuffers ()
virtual void	activate (bool isActive)
const DisplayParams &	getDisplayParams ()
GrDirectContext *	directContext () const
int	width () const
int	height () const
SkISize	dimensions () const
int	sampleCount () const
int	stencilBits () const

Protected Member Functions
	GLWindowContext (const DisplayParams &)
void	initializeContext ()
virtual sk_sp< const GrGLInterface >	onInitializeContext ()=0
void	destroyContext ()
virtual void	onDestroyContext ()=0
Protected Member Functions inherited from skwindow::WindowContext
virtual bool	isGpuContext ()
virtual void	onSwapBuffers ()=0

Protected Attributes
sk_sp< const GrGLInterface >	fBackendContext
sk_sp< SkSurface >	fSurface
Protected Attributes inherited from skwindow::WindowContext
sk_sp< GrDirectContext >	fContext
int	fWidth
int	fHeight
DisplayParams	fDisplayParams
int	fSampleCount = 1
int	fStencilBits = 0

Detailed Description

Definition at line 20 of file GLWindowContext.h.

Constructor & Destructor Documentation

GLWindowContext()

skwindow::internal::GLWindowContext::GLWindowContext ( const DisplayParams &  params )

protected

Definition at line 25 of file GLWindowContext.cpp.

        : WindowContext(params)
        , fBackendContext(nullptr)
        , fSurface(nullptr) {
    fDisplayParams.fMSAASampleCount = GrNextPow2(fDisplayParams.fMSAASampleCount);
}

Member Function Documentation

destroyContext()

void skwindow::internal::GLWindowContext::destroyContext ( )

protected

Definition at line 45 of file GLWindowContext.cpp.

                                     {
    fSurface.reset(nullptr);
 
    if (fContext) {
        // in case we have outstanding refs to this (lua?)
        fContext->abandonContext();
        fContext.reset();
    }
 
    fBackendContext.reset(nullptr);
 
    this->onDestroyContext();
}

getBackbufferSurface()

sk_sp< SkSurface > skwindow::internal::GLWindowContext::getBackbufferSurface ( )

overridevirtual

Implements skwindow::WindowContext.

Definition at line 59 of file GLWindowContext.cpp.

                                                       {
    if (nullptr == fSurface) {
        if (fContext) {
            GrGLint buffer;
            GR_GL_CALL(fBackendContext.get(), GetIntegerv(GR_GL_FRAMEBUFFER_BINDING, &buffer));
 
            GrGLFramebufferInfo fbInfo;
            fbInfo.fFBOID = buffer;
            fbInfo.fFormat = GR_GL_RGBA8;
            fbInfo.fProtected = skgpu::Protected(fDisplayParams.fCreateProtectedNativeBackend);
 
            auto backendRT = GrBackendRenderTargets::MakeGL(fWidth,
                                                            fHeight,
                                                            fSampleCount,
                                                            fStencilBits,
                                                            fbInfo);
 
            fSurface = SkSurfaces::WrapBackendRenderTarget(fContext.get(),
                                                           backendRT,
                                                           kBottomLeft_GrSurfaceOrigin,
                                                           kRGBA_8888_SkColorType,
                                                           fDisplayParams.fColorSpace,
                                                           &fDisplayParams.fSurfaceProps);
        }
    }
 
    return fSurface;
}

initializeContext()

void skwindow::internal::GLWindowContext::initializeContext ( )

protected

Definition at line 32 of file GLWindowContext.cpp.

                                        {
    SkASSERT(!fContext);
 
    fBackendContext = this->onInitializeContext();
 
    fContext = GrDirectContexts::MakeGL(fBackendContext, fDisplayParams.fGrContextOptions);
    if (!fContext && fDisplayParams.fMSAASampleCount > 1) {
        fDisplayParams.fMSAASampleCount /= 2;
        this->initializeContext();
        return;
    }
}

isValid()

bool skwindow::internal::GLWindowContext::isValid ( )

inlineoverridevirtual

Implements skwindow::WindowContext.

Definition at line 24 of file GLWindowContext.h.

{ return SkToBool(fBackendContext.get()); }

onDestroyContext()

virtual void skwindow::internal::GLWindowContext::onDestroyContext ( )

protectedpure virtual

Implemented in skwindow::internal::ANGLEWindowContext.

onInitializeContext()

virtual sk_sp< const GrGLInterface > skwindow::internal::GLWindowContext::onInitializeContext ( )

protectedpure virtual

Implemented in skwindow::internal::ANGLEWindowContext.

resize()

void skwindow::internal::GLWindowContext::resize ( int  w, int  h  )

overridevirtual

Implements skwindow::WindowContext.

Definition at line 88 of file GLWindowContext.cpp.

                                         {
    this->destroyContext();
    this->initializeContext();
}

setDisplayParams()

void skwindow::internal::GLWindowContext::setDisplayParams ( const DisplayParams &  params )

overridevirtual

Implements skwindow::WindowContext.

Definition at line 93 of file GLWindowContext.cpp.

                                                                  {
    fDisplayParams = params;
    this->destroyContext();
    this->initializeContext();
}

Member Data Documentation

fBackendContext

sk_sp<const GrGLInterface> skwindow::internal::GLWindowContext::fBackendContext

protected

Definition at line 43 of file GLWindowContext.h.

fSurface

sk_sp<SkSurface> skwindow::internal::GLWindowContext::fSurface

protected

Definition at line 44 of file GLWindowContext.h.

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The documentation for this class was generated from the following files:

• third_party/skia/tools/window/GLWindowContext.h
• third_party/skia/tools/window/GLWindowContext.cpp