95 lines
2.9 KiB
C++
95 lines
2.9 KiB
C++
/*
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* Copyright 2023 Google LLC
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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 "include/core/SkCanvas.h"
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#include "include/core/SkSurface.h"
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#include "include/gpu/GrBackendSurface.h"
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#include "include/gpu/GrDirectContext.h"
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#include "src/base/SkMathPriv.h"
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#include "src/gpu/ganesh/GrCaps.h"
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#include "src/gpu/ganesh/GrDirectContextPriv.h"
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#include "src/gpu/ganesh/gl/GrGLDefines_impl.h"
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#include "src/gpu/ganesh/gl/GrGLUtil.h"
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#include "src/image/SkImage_Base.h"
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#include "tools/window/SkGLWindowContext.h"
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SkGLWindowContext::SkGLWindowContext(const SkDisplayParams& params)
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: SkWindowContext(params)
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, fBackendContext(nullptr)
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, fSurface(nullptr) {
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fDisplayParams.fMSAASampleCount = GrNextPow2(fDisplayParams.fMSAASampleCount);
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}
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void SkGLWindowContext::initializeContext() {
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SkASSERT(!fContext);
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fBackendContext = this->onInitializeContext();
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fContext = GrDirectContext::MakeGL(fBackendContext, fDisplayParams.fGrContextOptions);
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if (!fContext && fDisplayParams.fMSAASampleCount > 1) {
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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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}
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void SkGLWindowContext::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 (lua?)
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fContext->abandonContext();
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fContext.reset();
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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> SkGLWindowContext::getBackbufferSurface() {
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if (nullptr == fSurface) {
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if (fContext) {
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GrGLint buffer;
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GR_GL_CALL(fBackendContext.get(), GetIntegerv(GR_GL_FRAMEBUFFER_BINDING, &buffer));
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GrGLFramebufferInfo fbInfo;
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fbInfo.fFBOID = buffer;
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fbInfo.fFormat = GR_GL_RGBA8;
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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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fbInfo);
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fSurface = SkSurface::MakeFromBackendRenderTarget(fContext.get(), backendRT,
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kBottomLeft_GrSurfaceOrigin,
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kRGBA_8888_SkColorType,
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fDisplayParams.fColorSpace,
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&fDisplayParams.fSurfaceProps);
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}
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}
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return fSurface;
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}
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void SkGLWindowContext::swapBuffers() {
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this->onSwapBuffers();
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}
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void SkGLWindowContext::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 SkGLWindowContext::setDisplayParams(const SkDisplayParams& params) {
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fDisplayParams = params;
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this->destroyContext();
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this->initializeContext();
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}
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