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comparison: gfx/skia/trunk/src/gpu/gl/win/SkNativeGLContext_win.cpp
gfx/skia/trunk/src/gpu/gl/win/SkNativeGLContext_win.cpp
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| -1:000000000000 | 0:256907476ef1 |
|---|---|
| 1 | |
| 2 /* | |
| 3 * Copyright 2011 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 #include "gl/SkNativeGLContext.h" | |
| 10 #include "SkWGL.h" | |
| 11 | |
| 12 #define WIN32_LEAN_AND_MEAN | |
| 13 #include <windows.h> | |
| 14 | |
| 15 SkNativeGLContext::AutoContextRestore::AutoContextRestore() { | |
| 16 fOldHGLRC = wglGetCurrentContext(); | |
| 17 fOldHDC = wglGetCurrentDC(); | |
| 18 } | |
| 19 | |
| 20 SkNativeGLContext::AutoContextRestore::~AutoContextRestore() { | |
| 21 wglMakeCurrent(fOldHDC, fOldHGLRC); | |
| 22 } | |
| 23 | |
| 24 /////////////////////////////////////////////////////////////////////////////// | |
| 25 | |
| 26 ATOM SkNativeGLContext::gWC = 0; | |
| 27 | |
| 28 SkNativeGLContext::SkNativeGLContext() | |
| 29 : fWindow(NULL) | |
| 30 , fDeviceContext(NULL) | |
| 31 , fGlRenderContext(0) { | |
| 32 } | |
| 33 | |
| 34 SkNativeGLContext::~SkNativeGLContext() { | |
| 35 this->destroyGLContext(); | |
| 36 } | |
| 37 | |
| 38 void SkNativeGLContext::destroyGLContext() { | |
| 39 if (fGlRenderContext) { | |
| 40 wglDeleteContext(fGlRenderContext); | |
| 41 } | |
| 42 if (fWindow && fDeviceContext) { | |
| 43 ReleaseDC(fWindow, fDeviceContext); | |
| 44 } | |
| 45 if (fWindow) { | |
| 46 DestroyWindow(fWindow); | |
| 47 } | |
| 48 } | |
| 49 | |
| 50 const GrGLInterface* SkNativeGLContext::createGLContext() { | |
| 51 HINSTANCE hInstance = (HINSTANCE)GetModuleHandle(NULL); | |
| 52 | |
| 53 if (!gWC) { | |
| 54 WNDCLASS wc; | |
| 55 wc.cbClsExtra = 0; | |
| 56 wc.cbWndExtra = 0; | |
| 57 wc.hbrBackground = NULL; | |
| 58 wc.hCursor = LoadCursor(NULL, IDC_ARROW); | |
| 59 wc.hIcon = LoadIcon(NULL, IDI_APPLICATION); | |
| 60 wc.hInstance = hInstance; | |
| 61 wc.lpfnWndProc = (WNDPROC) DefWindowProc; | |
| 62 wc.lpszClassName = TEXT("Griffin"); | |
| 63 wc.lpszMenuName = NULL; | |
| 64 wc.style = CS_HREDRAW | CS_VREDRAW | CS_OWNDC; | |
| 65 | |
| 66 gWC = RegisterClass(&wc); | |
| 67 if (!gWC) { | |
| 68 SkDebugf("Could not register window class.\n"); | |
| 69 return NULL; | |
| 70 } | |
| 71 } | |
| 72 | |
| 73 if (!(fWindow = CreateWindow(TEXT("Griffin"), | |
| 74 TEXT("The Invisible Man"), | |
| 75 WS_OVERLAPPEDWINDOW, | |
| 76 0, 0, 1, 1, | |
| 77 NULL, NULL, | |
| 78 hInstance, NULL))) { | |
| 79 SkDebugf("Could not create window.\n"); | |
| 80 return NULL; | |
| 81 } | |
| 82 | |
| 83 if (!(fDeviceContext = GetDC(fWindow))) { | |
| 84 SkDebugf("Could not get device context.\n"); | |
| 85 this->destroyGLContext(); | |
| 86 return NULL; | |
| 87 } | |
| 88 | |
| 89 // Requesting a Core profile would bar us from using NVPR. So we pass false. | |
| 90 if (!(fGlRenderContext = SkCreateWGLContext(fDeviceContext, 0, false))) { | |
| 91 SkDebugf("Could not create rendering context.\n"); | |
| 92 this->destroyGLContext(); | |
| 93 return NULL; | |
| 94 } | |
| 95 | |
| 96 if (!(wglMakeCurrent(fDeviceContext, fGlRenderContext))) { | |
| 97 SkDebugf("Could not set the context.\n"); | |
| 98 this->destroyGLContext(); | |
| 99 return NULL; | |
| 100 } | |
| 101 const GrGLInterface* interface = GrGLCreateNativeInterface(); | |
| 102 if (NULL == interface) { | |
| 103 SkDebugf("Could not create GL interface.\n"); | |
| 104 this->destroyGLContext(); | |
| 105 return NULL; | |
| 106 } | |
| 107 | |
| 108 return interface; | |
| 109 } | |
| 110 | |
| 111 void SkNativeGLContext::makeCurrent() const { | |
| 112 if (!wglMakeCurrent(fDeviceContext, fGlRenderContext)) { | |
| 113 SkDebugf("Could not create rendering context.\n"); | |
| 114 } | |
| 115 } | |
| 116 | |
| 117 void SkNativeGLContext::swapBuffers() const { | |
| 118 if (!SwapBuffers(fDeviceContext)) { | |
| 119 SkDebugf("Could not complete SwapBuffers.\n"); | |
| 120 } | |
| 121 } |
