src/gpu/gles2_conform_support/native/egl_native_win.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 extern "C" {
   6 #if defined(GLES2_CONFORM_SUPPORT_ONLY)
   7 #include "gpu/gles2_conform_support/gtf/gtf_stubs.h"
   8 #else
   9 #include "third_party/gles2_conform/GTF_ES/glsl/GTF/Source/eglNative.h"
  10 #endif
  11 }
  12
  13 #include <string>
  14
  15 namespace {
  16 LPCTSTR kWindowClassName = TEXT("ES2CONFORM");
  17
  18 LRESULT CALLBACK WindowProc(HWND hwnd, UINT msg,
  19                             WPARAM w_param, LPARAM l_param) {
  20   LRESULT result = 0;
  21   switch (msg) {
  22     case WM_CLOSE:
  23       ::DestroyWindow(hwnd);
  24       break;
  25     case WM_DESTROY:
  26       ::PostQuitMessage(0);
  27       break;
  28     case WM_ERASEBKGND:
  29       // Return a non-zero value to indicate that the background has been
  30       // erased.
  31       result = 1;
  32       break;
  33     default:
  34       result = ::DefWindowProc(hwnd, msg, w_param, l_param);
  35       break;
  36   }
  37   return result;
  38 }
  39 }  // namespace.
  40
  41 extern "C" {
  42
  43 GTFbool GTFNativeCreateDisplay(EGLNativeDisplayType *pNativeDisplay) {
  44   *pNativeDisplay = EGL_DEFAULT_DISPLAY;
  45   return GTFtrue;
  46 }
  47
  48 void GTFNativeDestroyDisplay(EGLNativeDisplayType nativeDisplay) {
  49   // Nothing to destroy since we are using EGL_DEFAULT_DISPLAY
  50 }
  51
  52 GTFbool GTFNativeCreateWindow(EGLNativeDisplayType nativeDisplay,
  53                               EGLDisplay eglDisplay, EGLConfig eglConfig,
  54                               const char* title, int width, int height,
  55                               EGLNativeWindowType *pNativeWindow) {
  56   WNDCLASS wnd_class = {0};
  57   HINSTANCE instance = GetModuleHandle(NULL);
  58   wnd_class.style = CS_OWNDC;
  59   wnd_class.lpfnWndProc = WindowProc;
  60   wnd_class.hInstance = instance;
  61   wnd_class.hbrBackground =
  62       reinterpret_cast<HBRUSH>(GetStockObject(BLACK_BRUSH));
  63   wnd_class.lpszClassName = kWindowClassName;
  64   if (!RegisterClass(&wnd_class))
  65     return GTFfalse;
  66
  67   DWORD wnd_style = WS_OVERLAPPEDWINDOW | WS_CLIPSIBLINGS | WS_CLIPCHILDREN;
  68   RECT wnd_rect;
  69   wnd_rect.left = 0;
  70   wnd_rect.top = 0;
  71   wnd_rect.right = width;
  72   wnd_rect.bottom = height;
  73   if (!AdjustWindowRect(&wnd_rect, wnd_style, FALSE))
  74     return GTFfalse;
  75
  76 #ifdef UNICODE
  77   // Convert ascii string to wide string.
  78   const std::wstring wnd_title(title, title + strlen(title));
  79 #else
  80   const std::string wnd_title = title;
  81 #endif  // UNICODE
  82
  83   HWND hwnd = CreateWindow(
  84       wnd_class.lpszClassName,
  85       wnd_title.c_str(),
  86       wnd_style,
  87       0,
  88       0,
  89       wnd_rect.right - wnd_rect.left,
  90       wnd_rect.bottom - wnd_rect.top,
  91       NULL,
  92       NULL,
  93       instance,
  94       NULL);
  95   if (hwnd == NULL)
  96     return GTFfalse;
  97
  98   ShowWindow(hwnd, SW_SHOWNORMAL);
  99   *pNativeWindow = hwnd;
 100   return GTFtrue;
 101 }
 102
 103 void GTFNativeDestroyWindow(EGLNativeDisplayType nativeDisplay,
 104                             EGLNativeWindowType nativeWindow) {
 105   DestroyWindow(nativeWindow);
 106   UnregisterClass(kWindowClassName, GetModuleHandle(NULL));
 107 }
 108
 109 EGLImageKHR GTFCreateEGLImage(int width, int height,
 110                               GLenum format, GLenum type) {
 111   return (EGLImageKHR)NULL;
 112 }
 113
 114 void GTFDestroyEGLImage(EGLImageKHR image) {
 115 }
 116
 117 }  // extern "C"