debugger: SW rasterize the picture only when it changes

debugger/QT/SkGLWidget.cpp

 
 /*
  * 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"
@@ skipping 54 matching lines @@
     desc.fOrigin = kBottomLeft_GrSurfaceOrigin;
     SkAutoTUnref<GrRenderTarget> curRenderTarget(fCurContext->wrapBackendRenderTarget(desc));
     fGpuDevice.reset(SkGpuDevice::Create(curRenderTarget.get(),
                                          SkSurfaceProps(SkSurfaceProps::kLegacyFontHost_InitType)));
     fCanvas.reset(new SkCanvas(fGpuDevice));
 }
 
 void SkGLWidget::resizeGL(int w, int h) {
     SkASSERT(w == this->width() && h == this->height());
     this->createRenderTarget();
-    draw();
 }
 
 void SkGLWidget::paintGL() {
     if (!this->isHidden() && fCanvas) {
         fDebugger->draw(fCanvas.get());
         // TODO(chudy): Implement an optional flush button in Gui.
         fCanvas->flush();
         emit drawComplete();
     }
 }
 
 GrBackendRenderTargetDesc SkGLWidget::getDesc(int w, int h) {
     GrBackendRenderTargetDesc desc;
     desc.fWidth = SkScalarRoundToInt(this->width());
     desc.fHeight = SkScalarRoundToInt(this->height());
     desc.fConfig = kSkia8888_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;
 }
 
 #endif