blob: 395cf4451becfa7aa8988de24db612d6385a55d3 [file] [log] [blame]
chudy@google.comea5488b2012-07-26 19:38:22 +00001
2/*
3 * Copyright 2012 Google Inc.
4 *
5 * Use of this source code is governed by a BSD-style license that can be
6 * found in the LICENSE file.
7 */
8
9
10#include "SkGLWidget.h"
11
12SkGLWidget::SkGLWidget(QWidget* parent) : QGLWidget(parent) {
13 this->setStyleSheet("QWidget {background-color: white; border: 1px solid #cccccc;}");
14 fTransform.set(0,0);
15 fScaleFactor = 1.0;
16 fIndex = 0;
17 fDebugCanvas = NULL;
18}
19
20SkGLWidget::~SkGLWidget() {
21 SkSafeUnref(fCurIntf);
22 SkSafeUnref(fCurContext);
23 SkSafeUnref(fGpuDevice);
24}
25
26void SkGLWidget::initializeGL() {
27 fCurIntf = GrGLCreateNativeInterface();
28 fCurContext = GrContext::Create(kOpenGL_Shaders_GrEngine, (GrPlatform3DContext) fCurIntf);
29 GrRenderTarget* curRenderTarget = fCurContext->createPlatformRenderTarget(getDesc(this->width(), this->height()));
30 fGpuDevice = new SkGpuDevice(fCurContext, curRenderTarget);
31 curRenderTarget->unref();
32
33 glClearColor(1, 1, 1, 0);
34 glClearStencil(0);
35 glClear(GL_STENCIL_BUFFER_BIT);
36}
37
38void SkGLWidget::resizeGL(int w, int h) {
39 GrRenderTarget* curRenderTarget = fCurContext->createPlatformRenderTarget(getDesc(w,h));
40 SkSafeUnref(fGpuDevice);
41 fGpuDevice = new SkGpuDevice(fCurContext, curRenderTarget);
42 drawTo(fIndex);
43}
44
45void SkGLWidget::paintGL() {
46 glClearColor(1, 1, 1, 0);
47 SkCanvas canvas(fGpuDevice);
48 canvas.translate(fTransform.fX, fTransform.fY);
49 if(fScaleFactor < 0) {
50 canvas.scale((1.0 / -fScaleFactor),(1.0 / -fScaleFactor));
51 } else if (fScaleFactor > 0) {
52 canvas.scale(fScaleFactor, fScaleFactor);
53 }
54 // TODO(chudy): Remove bitmap arguement.
55 fDebugCanvas->drawTo(&canvas, fIndex+1, NULL);
56 canvas.flush();
57}
58
59GrPlatformRenderTargetDesc SkGLWidget::getDesc(int w, int h) {
60 GrPlatformRenderTargetDesc desc;
61 desc.fWidth = SkScalarRound(this->width());
62 desc.fHeight = SkScalarRound(this->height());
63 desc.fConfig = kSkia8888_PM_GrPixelConfig;
64 GR_GL_GetIntegerv(fCurIntf, GR_GL_SAMPLES, &desc.fSampleCnt);
65 GR_GL_GetIntegerv(fCurIntf, GR_GL_STENCIL_BITS, &desc.fStencilBits);
66 GrGLint buffer;
67 GR_GL_GetIntegerv(fCurIntf, GR_GL_FRAMEBUFFER_BINDING, &buffer);
68 desc.fRenderTargetHandle = buffer;
69
70 return desc;
71}