Support MSAA in the picture debugger

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"
 
 #if SK_SUPPORT_GPU
 
 SkGLWidget::SkGLWidget(SkDebugger* debugger) : QGLWidget() {
     this->setStyleSheet("QWidget {background-color: white; border: 1px solid #cccccc;}");
     fDebugger = debugger;
     fCurIntf = NULL;
     fCurContext = NULL;
     fGpuDevice = NULL;
     fCanvas = NULL;
 }
 
 SkGLWidget::~SkGLWidget() {
     SkSafeUnref(fCurIntf);
     SkSafeUnref(fCurContext);
     SkSafeUnref(fGpuDevice);
     SkSafeUnref(fCanvas);
 }
 
+void SkGLWidget::setSampleCount(int sampleCount)
+{
+    QGLFormat currentFormat = format();
+    currentFormat.setSampleBuffers(sampleCount > 0);
+    currentFormat.setSamples(sampleCount);
+    setFormat(currentFormat);
+}
+
 void SkGLWidget::initializeGL() {
     fCurIntf = GrGLCreateNativeInterface();
     if (!fCurIntf) {
         return;
     }
     fCurContext = GrContext::Create(kOpenGL_GrBackend, (GrBackendContext) fCurIntf);
     GrBackendRenderTargetDesc desc = this->getDesc(this->width(), this->height());
     desc.fOrigin = kBottomLeft_GrSurfaceOrigin;
     GrRenderTarget* curRenderTarget = fCurContext->wrapBackendRenderTarget(desc);
     fGpuDevice = new SkGpuDevice(fCurContext, curRenderTarget);
@@ skipping 36 matching lines @@
     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