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/*
* 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();
}
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;
}
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