| |
| /* |
| * Copyright 2012 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| |
| #include "SkGLWidget.h" |
| |
| SkGLWidget::SkGLWidget() : QGLWidget() { |
| this->setStyleSheet("QWidget {background-color: white; border: 1px solid #cccccc;}"); |
| fTransform.set(0,0); |
| fScaleFactor = 1.0; |
| fIndex = 0; |
| fDebugCanvas = NULL; |
| fCurIntf = NULL; |
| fCurContext = NULL; |
| fGpuDevice = NULL; |
| fCanvas = NULL; |
| } |
| |
| SkGLWidget::~SkGLWidget() { |
| SkSafeUnref(fCurIntf); |
| SkSafeUnref(fCurContext); |
| SkSafeUnref(fGpuDevice); |
| SkSafeUnref(fCanvas); |
| } |
| |
| void SkGLWidget::initializeGL() { |
| fCurIntf = GrGLCreateNativeInterface(); |
| fCurContext = GrContext::Create(kOpenGL_Shaders_GrEngine, (GrPlatform3DContext) fCurIntf); |
| GrRenderTarget* curRenderTarget = fCurContext->createPlatformRenderTarget(getDesc(this->width(), this->height())); |
| fGpuDevice = new SkGpuDevice(fCurContext, curRenderTarget); |
| fCanvas = new SkCanvas(fGpuDevice); |
| curRenderTarget->unref(); |
| |
| glClearColor(1, 1, 1, 0); |
| glClearStencil(0); |
| glClear(GL_STENCIL_BUFFER_BIT); |
| } |
| |
| void SkGLWidget::resizeGL(int w, int h) { |
| GrRenderTarget* curRenderTarget = fCurContext->createPlatformRenderTarget(getDesc(w,h)); |
| SkSafeUnref(fGpuDevice); |
| SkSafeUnref(fCanvas); |
| fGpuDevice = new SkGpuDevice(fCurContext, curRenderTarget); |
| fCanvas = new SkCanvas(fGpuDevice); |
| drawTo(fIndex); |
| } |
| |
| void SkGLWidget::paintGL() { |
| glClearColor(1, 1, 1, 0); |
| fDebugCanvas->drawTo(fCanvas, fIndex); |
| // TODO(chudy): Implement an optional flush button in Gui. |
| fCanvas->flush(); |
| emit drawComplete(); |
| } |
| |
| GrPlatformRenderTargetDesc SkGLWidget::getDesc(int w, int h) { |
| GrPlatformRenderTargetDesc desc; |
| desc.fWidth = SkScalarRound(this->width()); |
| desc.fHeight = SkScalarRound(this->height()); |
| desc.fConfig = kSkia8888_PM_GrPixelConfig; |
| GR_GL_GetIntegerv(fCurIntf, GR_GL_SAMPLES, &desc.fSampleCnt); |
| GR_GL_GetIntegerv(fCurIntf, GR_GL_STENCIL_BITS, &desc.fStencilBits); |
| GrGLint buffer; |
| GR_GL_GetIntegerv(fCurIntf, GR_GL_FRAMEBUFFER_BINDING, &buffer); |
| desc.fRenderTargetHandle = buffer; |
| |
| return desc; |
| } |