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1 /* | |
2 * Copyright 2013 Google Inc. | |
3 * | |
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 "BaseExample.h" | |
11 | |
12 #include "gl/GrGLUtil.h" | |
13 #include "gl/GrGLDefines.h" | |
14 #include "gl/GrGLInterface.h" | |
15 #include "SkApplication.h" | |
16 #include "SkGpuDevice.h" | |
17 #include "SkGraphics.h" | |
18 | |
19 void application_init() { | |
20 SkGraphics::Init(); | |
21 SkEvent::Init(); | |
22 } | |
23 | |
24 void application_term() { | |
25 SkEvent::Term(); | |
26 SkGraphics::Term(); | |
27 } | |
28 | |
29 BaseExample::BaseExample(void* hWnd, int argc, char** argv) | |
30 : INHERITED(hWnd) {} | |
31 | |
32 void BaseExample::tearDownBackend() { | |
33 if (kGPU_DeviceType == fType) { | |
34 SkSafeUnref(fContext); | |
35 fContext = NULL; | |
36 | |
37 SkSafeUnref(fInterface); | |
38 fInterface = NULL; | |
39 | |
40 SkSafeUnref(fRenderTarget); | |
41 fRenderTarget = NULL; | |
42 | |
43 detach(); | |
44 } | |
45 } | |
46 | |
47 bool BaseExample::setupBackend(DeviceType type) { | |
48 fType = type; | |
49 | |
50 this->setConfig(SkBitmap::kARGB_8888_Config); | |
51 this->setVisibleP(true); | |
52 this->setClipToBounds(false); | |
53 | |
54 bool result = attach(kNativeGL_BackEndType, 0 /*msaa*/, &fAttachmentInfo); | |
55 if (false == result) { | |
56 SkDebugf("Not possible to create backend.\n"); | |
57 detach(); | |
58 return false; | |
59 } | |
60 | |
61 fInterface = GrGLCreateNativeInterface(); | |
62 | |
63 SkASSERT(NULL != fInterface); | |
64 | |
65 fContext = GrContext::Create(kOpenGL_GrBackend, (GrBackendContext)fInterface
); | |
66 SkASSERT(NULL != fContext); | |
67 | |
68 setupRenderTarget(); | |
69 | |
70 return true; | |
71 } | |
72 | |
73 void BaseExample::setupRenderTarget() { | |
74 GrBackendRenderTargetDesc desc; | |
75 desc.fWidth = SkScalarRound(width()); | |
76 desc.fHeight = SkScalarRound(height()); | |
77 desc.fConfig = kSkia8888_GrPixelConfig; | |
78 desc.fOrigin = kBottomLeft_GrSurfaceOrigin; | |
79 desc.fSampleCnt = fAttachmentInfo.fSampleCount; | |
80 desc.fStencilBits = fAttachmentInfo.fStencilBits; | |
81 | |
82 GrGLint buffer; | |
83 GR_GL_GetIntegerv(fInterface, GR_GL_FRAMEBUFFER_BINDING, &buffer); | |
84 desc.fRenderTargetHandle = buffer; | |
85 | |
86 fRenderTarget = fContext->wrapBackendRenderTarget(desc); | |
87 | |
88 fContext->setRenderTarget(fRenderTarget); | |
89 } | |
90 | |
91 SkCanvas* BaseExample::createCanvas() { | |
92 if (fType == kGPU_DeviceType) { | |
93 if (NULL != fContext && NULL != fRenderTarget) { | |
94 SkAutoTUnref<SkDevice> device(new SkGpuDevice(fContext, fRenderTarge
t)); | |
95 return new SkCanvas(device); | |
96 } | |
97 tearDownBackend(); | |
98 setupBackend(kRaster_DeviceType); | |
99 } | |
100 return INHERITED::createCanvas(); | |
101 } | |
102 | |
103 void BaseExample::draw(SkCanvas* canvas) { | |
104 if (fType == kGPU_DeviceType) { | |
105 | |
106 SkASSERT(NULL != fContext); | |
107 fContext->flush(); | |
108 } | |
109 if (fType == kRaster_DeviceType) { | |
110 // need to send the raster bits to the (gpu) window | |
111 fContext->setRenderTarget(fRenderTarget); | |
112 const SkBitmap& bm = getBitmap(); | |
113 fRenderTarget->writePixels(0, 0, bm.width(), bm.height(), | |
114 kSkia8888_GrPixelConfig, | |
115 bm.getPixels(), | |
116 bm.rowBytes()); | |
117 } | |
118 INHERITED::present(); | |
119 } | |
120 | |
121 void BaseExample::onSizeChange() { | |
122 setupRenderTarget(); | |
123 } | |
124 | |
125 #ifdef SK_BUILD_FOR_WIN | |
126 void BaseExample::onHandleInval(const SkIRect& rect) { | |
127 RECT winRect; | |
128 winRect.top = rect.top(); | |
129 winRect.bottom = rect.bottom(); | |
130 winRect.right = rect.right(); | |
131 winRect.left = rect.left(); | |
132 InvalidateRect((HWND)this->getHWND(), &winRect, false); | |
133 } | |
134 #endif | |
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