| |
| /* |
| * Copyright 2015 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "GrContext.h" |
| #include "SkCommonFlagsPathRenderer.h" |
| #include "SkSurface.h" |
| #include "GLWindowContext.h" |
| |
| #include "gl/GrGLDefines.h" |
| |
| #include "gl/GrGLUtil.h" |
| #include "GrRenderTarget.h" |
| #include "GrContext.h" |
| |
| #include "SkCanvas.h" |
| #include "SkImage_Base.h" |
| |
| namespace sk_app { |
| |
| GLWindowContext::GLWindowContext(const DisplayParams& params) |
| : WindowContext() |
| , fBackendContext(nullptr) |
| , fSurface(nullptr) { |
| fDisplayParams = params; |
| } |
| |
| void GLWindowContext::initializeContext() { |
| this->onInitializeContext(); |
| SkASSERT(nullptr == fContext); |
| |
| GrContextOptions ctxOptions; |
| ctxOptions.fGpuPathRenderers = CollectGpuPathRenderersFromFlags(); |
| fBackendContext.reset(GrGLCreateNativeInterface()); |
| fContext = GrContext::Create(kOpenGL_GrBackend, (GrBackendContext)fBackendContext.get(), |
| ctxOptions); |
| |
| // We may not have real sRGB support (ANGLE, in particular), so check for |
| // that, and fall back to L32: |
| fPixelConfig = fContext->caps()->srgbSupport() && fDisplayParams.fColorSpace |
| ? kSRGBA_8888_GrPixelConfig : kRGBA_8888_GrPixelConfig; |
| } |
| |
| void GLWindowContext::destroyContext() { |
| fSurface.reset(nullptr); |
| |
| if (fContext) { |
| // in case we have outstanding refs to this guy (lua?) |
| fContext->abandonContext(); |
| fContext->unref(); |
| fContext = nullptr; |
| } |
| |
| fBackendContext.reset(nullptr); |
| |
| this->onDestroyContext(); |
| } |
| |
| sk_sp<SkSurface> GLWindowContext::getBackbufferSurface() { |
| if (nullptr == fSurface) { |
| if (fContext) { |
| GrBackendRenderTargetDesc desc; |
| desc.fWidth = this->fWidth; |
| desc.fHeight = this->fHeight; |
| desc.fConfig = fPixelConfig; |
| desc.fOrigin = kBottomLeft_GrSurfaceOrigin; |
| desc.fSampleCnt = fSampleCount; |
| desc.fStencilBits = fStencilBits; |
| GrGLint buffer; |
| GR_GL_CALL(fBackendContext.get(), GetIntegerv(GR_GL_FRAMEBUFFER_BINDING, &buffer)); |
| desc.fRenderTargetHandle = buffer; |
| |
| fSurface = SkSurface::MakeFromBackendRenderTarget(fContext, desc, |
| fDisplayParams.fColorSpace, |
| &fSurfaceProps); |
| } |
| } |
| |
| return fSurface; |
| } |
| |
| void GLWindowContext::swapBuffers() { |
| this->onSwapBuffers(); |
| } |
| |
| void GLWindowContext::resize(int w, int h) { |
| this->destroyContext(); |
| this->initializeContext(); |
| } |
| |
| void GLWindowContext::setDisplayParams(const DisplayParams& params) { |
| this->destroyContext(); |
| fDisplayParams = params; |
| this->initializeContext(); |
| } |
| |
| } //namespace sk_app |