fbdc080d3c
Change-Id: I0ff11088465a4702acf9841a791d76f286ddbaf1 Reviewed-on: https://skia-review.googlesource.com/15147 Commit-Queue: Jim Van Verth <jvanverth@google.com> Reviewed-by: Brian Osman <brianosman@google.com>
113 lines
3.3 KiB
C++
113 lines
3.3 KiB
C++
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/*
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* Copyright 2015 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "GrBackendSurface.h"
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#include "GrContext.h"
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#include "GrRenderTarget.h"
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#include "GLWindowContext.h"
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#include "gl/GrGLDefines.h"
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#include "gl/GrGLUtil.h"
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#include "SkCanvas.h"
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#include "SkImage_Base.h"
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#include "SkMathPriv.h"
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#include "SkSurface.h"
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namespace sk_app {
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GLWindowContext::GLWindowContext(const DisplayParams& params)
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: WindowContext(params)
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, fBackendContext(nullptr)
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, fSurface(nullptr) {
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fDisplayParams.fMSAASampleCount = fDisplayParams.fMSAASampleCount ?
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GrNextPow2(fDisplayParams.fMSAASampleCount) :
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0;
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}
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void GLWindowContext::initializeContext() {
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this->onInitializeContext();
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SkASSERT(nullptr == fContext);
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fBackendContext.reset(GrGLCreateNativeInterface());
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fContext = GrContext::Create(kOpenGL_GrBackend, (GrBackendContext)fBackendContext.get(),
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fDisplayParams.fGrContextOptions);
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if (!fContext && fDisplayParams.fMSAASampleCount) {
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fDisplayParams.fMSAASampleCount /= 2;
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this->initializeContext();
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return;
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}
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if (fContext) {
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// We may not have real sRGB support (ANGLE, in particular), so check for
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// that, and fall back to L32:
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fPixelConfig = fContext->caps()->srgbSupport() && fDisplayParams.fColorSpace
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? kSRGBA_8888_GrPixelConfig : kRGBA_8888_GrPixelConfig;
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} else {
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fPixelConfig = kUnknown_GrPixelConfig;
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}
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}
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void GLWindowContext::destroyContext() {
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fSurface.reset(nullptr);
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if (fContext) {
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// in case we have outstanding refs to this guy (lua?)
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fContext->abandonContext();
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fContext->unref();
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fContext = nullptr;
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}
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fBackendContext.reset(nullptr);
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this->onDestroyContext();
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}
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sk_sp<SkSurface> GLWindowContext::getBackbufferSurface() {
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if (nullptr == fSurface) {
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if (fContext) {
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GrGLFramebufferInfo fbInfo;
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GrGLint buffer;
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GR_GL_CALL(fBackendContext.get(), GetIntegerv(GR_GL_FRAMEBUFFER_BINDING,
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&buffer));
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fbInfo.fFBOID = buffer;
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GrBackendRenderTarget backendRT(fWidth,
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fHeight,
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fSampleCount,
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fStencilBits,
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fPixelConfig,
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fbInfo);
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fSurface = SkSurface::MakeFromBackendRenderTarget(fContext, backendRT,
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kBottomLeft_GrSurfaceOrigin,
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fDisplayParams.fColorSpace,
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&fSurfaceProps);
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}
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}
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return fSurface;
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}
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void GLWindowContext::swapBuffers() {
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this->onSwapBuffers();
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}
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void GLWindowContext::resize(int w, int h) {
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this->destroyContext();
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this->initializeContext();
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}
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void GLWindowContext::setDisplayParams(const DisplayParams& params) {
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this->destroyContext();
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fDisplayParams = params;
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this->initializeContext();
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}
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} //namespace sk_app
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