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      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"
    118