The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/gfx/skia/trunk/src/gpu/gl/win/SkNativeGLContext_win.cpp	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,121 @@
     1.4 +
     1.5 +/*
     1.6 + * Copyright 2011 Google Inc.
     1.7 + *
     1.8 + * Use of this source code is governed by a BSD-style license that can be
     1.9 + * found in the LICENSE file.
    1.10 + */
    1.11 +
    1.12 +#include "gl/SkNativeGLContext.h"
    1.13 +#include "SkWGL.h"
    1.14 +
    1.15 +#define WIN32_LEAN_AND_MEAN
    1.16 +#include <windows.h>
    1.17 +
    1.18 +SkNativeGLContext::AutoContextRestore::AutoContextRestore() {
    1.19 +    fOldHGLRC = wglGetCurrentContext();
    1.20 +    fOldHDC = wglGetCurrentDC();
    1.21 +}
    1.22 +
    1.23 +SkNativeGLContext::AutoContextRestore::~AutoContextRestore() {
    1.24 +    wglMakeCurrent(fOldHDC, fOldHGLRC);
    1.25 +}
    1.26 +
    1.27 +///////////////////////////////////////////////////////////////////////////////
    1.28 +
    1.29 +ATOM SkNativeGLContext::gWC = 0;
    1.30 +
    1.31 +SkNativeGLContext::SkNativeGLContext()
    1.32 +    : fWindow(NULL)
    1.33 +    , fDeviceContext(NULL)
    1.34 +    , fGlRenderContext(0) {
    1.35 +}
    1.36 +
    1.37 +SkNativeGLContext::~SkNativeGLContext() {
    1.38 +    this->destroyGLContext();
    1.39 +}
    1.40 +
    1.41 +void SkNativeGLContext::destroyGLContext() {
    1.42 +    if (fGlRenderContext) {
    1.43 +        wglDeleteContext(fGlRenderContext);
    1.44 +    }
    1.45 +    if (fWindow && fDeviceContext) {
    1.46 +        ReleaseDC(fWindow, fDeviceContext);
    1.47 +    }
    1.48 +    if (fWindow) {
    1.49 +        DestroyWindow(fWindow);
    1.50 +    }
    1.51 +}
    1.52 +
    1.53 +const GrGLInterface* SkNativeGLContext::createGLContext() {
    1.54 +    HINSTANCE hInstance = (HINSTANCE)GetModuleHandle(NULL);
    1.55 +
    1.56 +    if (!gWC) {
    1.57 +        WNDCLASS wc;
    1.58 +        wc.cbClsExtra = 0;
    1.59 +        wc.cbWndExtra = 0;
    1.60 +        wc.hbrBackground = NULL;
    1.61 +        wc.hCursor = LoadCursor(NULL, IDC_ARROW);
    1.62 +        wc.hIcon = LoadIcon(NULL, IDI_APPLICATION);
    1.63 +        wc.hInstance = hInstance;
    1.64 +        wc.lpfnWndProc = (WNDPROC) DefWindowProc;
    1.65 +        wc.lpszClassName = TEXT("Griffin");
    1.66 +        wc.lpszMenuName = NULL;
    1.67 +        wc.style = CS_HREDRAW | CS_VREDRAW | CS_OWNDC;
    1.68 +
    1.69 +        gWC = RegisterClass(&wc);
    1.70 +        if (!gWC) {
    1.71 +            SkDebugf("Could not register window class.\n");
    1.72 +            return NULL;
    1.73 +        }
    1.74 +    }
    1.75 +
    1.76 +    if (!(fWindow = CreateWindow(TEXT("Griffin"),
    1.77 +                                 TEXT("The Invisible Man"),
    1.78 +                                 WS_OVERLAPPEDWINDOW,
    1.79 +                                 0, 0, 1, 1,
    1.80 +                                 NULL, NULL,
    1.81 +                                 hInstance, NULL))) {
    1.82 +        SkDebugf("Could not create window.\n");
    1.83 +        return NULL;
    1.84 +    }
    1.85 +
    1.86 +    if (!(fDeviceContext = GetDC(fWindow))) {
    1.87 +        SkDebugf("Could not get device context.\n");
    1.88 +        this->destroyGLContext();
    1.89 +        return NULL;
    1.90 +    }
    1.91 +
    1.92 +    // Requesting a Core profile would bar us from using NVPR. So we pass false.
    1.93 +    if (!(fGlRenderContext = SkCreateWGLContext(fDeviceContext, 0, false))) {
    1.94 +        SkDebugf("Could not create rendering context.\n");
    1.95 +        this->destroyGLContext();
    1.96 +        return NULL;
    1.97 +    }
    1.98 +
    1.99 +    if (!(wglMakeCurrent(fDeviceContext, fGlRenderContext))) {
   1.100 +        SkDebugf("Could not set the context.\n");
   1.101 +        this->destroyGLContext();
   1.102 +        return NULL;
   1.103 +    }
   1.104 +    const GrGLInterface* interface = GrGLCreateNativeInterface();
   1.105 +    if (NULL == interface) {
   1.106 +        SkDebugf("Could not create GL interface.\n");
   1.107 +        this->destroyGLContext();
   1.108 +        return NULL;
   1.109 +    }
   1.110 +
   1.111 +    return interface;
   1.112 +}
   1.113 +
   1.114 +void SkNativeGLContext::makeCurrent() const {
   1.115 +    if (!wglMakeCurrent(fDeviceContext, fGlRenderContext)) {
   1.116 +        SkDebugf("Could not create rendering context.\n");
   1.117 +    }
   1.118 +}
   1.119 +
   1.120 +void SkNativeGLContext::swapBuffers() const {
   1.121 +    if (!SwapBuffers(fDeviceContext)) {
   1.122 +        SkDebugf("Could not complete SwapBuffers.\n");
   1.123 +    }
   1.124 +}