| /* |
| * Copyright 2023 Google LLC |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "tools/window/GLWindowContext.h" |
| #include "include/core/SkCanvas.h" |
| #include "include/core/SkSurface.h" |
| #include "include/gpu/GrBackendSurface.h" |
| #include "include/gpu/GrDirectContext.h" |
| #include "include/gpu/ganesh/SkSurfaceGanesh.h" |
| #include "include/gpu/ganesh/gl/GrGLBackendSurface.h" |
| #include "src/base/SkMathPriv.h" |
| #include "src/gpu/ganesh/GrCaps.h" |
| #include "src/gpu/ganesh/GrDirectContextPriv.h" |
| #include "src/gpu/ganesh/gl/GrGLDefines.h" |
| #include "src/gpu/ganesh/gl/GrGLUtil.h" |
| #include "include/gpu/ganesh/gl/GrGLDirectContext.h" |
| #include "src/image/SkImage_Base.h" |
| |
| namespace skwindow::internal { |
| |
| GLWindowContext::GLWindowContext(const DisplayParams& params) |
| : WindowContext(params) |
| , fBackendContext(nullptr) |
| , fSurface(nullptr) { |
| fDisplayParams.fMSAASampleCount = GrNextPow2(fDisplayParams.fMSAASampleCount); |
| } |
| |
| void GLWindowContext::initializeContext() { |
| SkASSERT(!fContext); |
| |
| fBackendContext = this->onInitializeContext(); |
| |
| fContext = GrDirectContexts::MakeGL(fBackendContext, fDisplayParams.fGrContextOptions); |
| if (!fContext && fDisplayParams.fMSAASampleCount > 1) { |
| fDisplayParams.fMSAASampleCount /= 2; |
| this->initializeContext(); |
| return; |
| } |
| } |
| |
| void GLWindowContext::destroyContext() { |
| fSurface.reset(nullptr); |
| |
| if (fContext) { |
| // in case we have outstanding refs to this (lua?) |
| fContext->abandonContext(); |
| fContext.reset(); |
| } |
| |
| fBackendContext.reset(nullptr); |
| |
| this->onDestroyContext(); |
| } |
| |
| sk_sp<SkSurface> GLWindowContext::getBackbufferSurface() { |
| 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; |
| } |
| |
| void GLWindowContext::resize(int w, int h) { |
| this->destroyContext(); |
| this->initializeContext(); |
| } |
| |
| void GLWindowContext::setDisplayParams(const DisplayParams& params) { |
| fDisplayParams = params; |
| this->destroyContext(); |
| this->initializeContext(); |
| } |
| |
| } // namespace skwindow::internal |