reactos/dll/opengl/mesa/src/gallium/state_trackers/wgl/stw_ext_pbuffer.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2010 VMware, Inc.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #include <windows.h>
  29
  30 #define WGL_WGLEXT_PROTOTYPES
  31
  32 #include <GL/gl.h>
  33 #include <GL/wglext.h>
  34
  35 #include "pipe/p_defines.h"
  36 #include "pipe/p_screen.h"
  37
  38 #include "stw_device.h"
  39 #include "stw_pixelformat.h"
  40 #include "stw_framebuffer.h"
  41
  42
  43 #define LARGE_WINDOW_SIZE 60000
  44
  45
  46 static LRESULT CALLBACK
  47 WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
  48 {
  49     MINMAXINFO *pMMI;
  50     switch (uMsg) {
  51     case WM_GETMINMAXINFO:
  52         // Allow to create a window bigger than the desktop
  53         pMMI = (MINMAXINFO *)lParam;
  54         pMMI->ptMaxSize.x = LARGE_WINDOW_SIZE;
  55         pMMI->ptMaxSize.y = LARGE_WINDOW_SIZE;
  56         pMMI->ptMaxTrackSize.x = LARGE_WINDOW_SIZE;
  57         pMMI->ptMaxTrackSize.y = LARGE_WINDOW_SIZE;
  58         break;
  59     default:
  60         break;
  61     }
  62
  63     return DefWindowProc(hWnd, uMsg, wParam, lParam);
  64 }
  65
  66
  67 HPBUFFERARB WINAPI
  68 wglCreatePbufferARB(HDC _hDC,
  69                     int iPixelFormat,
  70                     int iWidth,
  71                     int iHeight,
  72                     const int *piAttribList)
  73 {
  74    static boolean first = TRUE;
  75    const int *piAttrib;
  76    int useLargest = 0;
  77    const struct stw_pixelformat_info *info;
  78    struct stw_framebuffer *fb;
  79    DWORD dwExStyle;
  80    DWORD dwStyle;
  81    RECT rect;
  82    HWND hWnd;
  83    HDC hDC;
  84
  85    info = stw_pixelformat_get_info(iPixelFormat);
  86    if (!info) {
  87       SetLastError(ERROR_INVALID_PIXEL_FORMAT);
  88       return 0;
  89    }
  90
  91    if (iWidth <= 0 || iHeight <= 0) {
  92       SetLastError(ERROR_INVALID_DATA);
  93       return 0;
  94    }
  95
  96    for (piAttrib = piAttribList; *piAttrib; piAttrib++) {
  97       switch (*piAttrib) {
  98       case WGL_PBUFFER_LARGEST_ARB:
  99          piAttrib++;
 100          useLargest = *piAttrib;
 101          break;
 102       default:
 103          SetLastError(ERROR_INVALID_DATA);
 104          return 0;
 105       }
 106    }
 107
 108    if (iWidth > stw_dev->max_2d_length) {
 109       if (useLargest) {
 110          iWidth = stw_dev->max_2d_length;
 111       } else {
 112          SetLastError(ERROR_NO_SYSTEM_RESOURCES);
 113          return 0;
 114       }
 115    }
 116
 117    if (iHeight > stw_dev->max_2d_length) {
 118       if (useLargest) {
 119          iHeight = stw_dev->max_2d_length;
 120       } else {
 121          SetLastError(ERROR_NO_SYSTEM_RESOURCES);
 122          return 0;
 123       }
 124    }
 125
 126    /*
 127     * Implement pbuffers through invisible windows
 128     */
 129
 130    if (first) {
 131       WNDCLASS wc;
 132       memset(&wc, 0, sizeof wc);
 133       wc.hbrBackground = (HBRUSH) (COLOR_BTNFACE + 1);
 134       wc.hCursor = LoadCursor(NULL, IDC_ARROW);
 135       wc.hIcon = LoadIcon(NULL, IDI_APPLICATION);
 136       wc.lpfnWndProc = WndProc;
 137       wc.lpszClassName = "wglpbuffer";
 138       wc.style = CS_OWNDC | CS_HREDRAW | CS_VREDRAW;
 139       RegisterClass(&wc);
 140       first = FALSE;
 141    }
 142
 143    dwExStyle = 0;
 144    dwStyle = WS_CLIPSIBLINGS | WS_CLIPCHILDREN;
 145
 146    if (0) {
 147       /*
 148        * Don't hide the window -- useful for debugging what the application is
 149        * drawing
 150        */
 151
 152       dwStyle |= WS_VISIBLE | WS_OVERLAPPEDWINDOW;
 153    } else {
 154       dwStyle |= WS_POPUPWINDOW;
 155    }
 156
 157    rect.left = 0;
 158    rect.top = 0;
 159    rect.right = rect.left + iWidth;
 160    rect.bottom = rect.top + iHeight;
 161
 162    /*
 163     * The CreateWindowEx parameters are the total (outside) dimensions of the
 164     * window, which can vary with Windows version and user settings.  Use
 165     * AdjustWindowRect to get the required total area for the given client area.
 166     *
 167     * AdjustWindowRectEx does not accept WS_OVERLAPPED style (which is defined
 168     * as 0), which means we need to use some other style instead, e.g.,
 169     * WS_OVERLAPPEDWINDOW or WS_POPUPWINDOW as above.
 170     */
 171
 172    AdjustWindowRectEx(&rect, dwStyle, FALSE, dwExStyle);
 173
 174    hWnd = CreateWindowEx(dwExStyle,
 175                          "wglpbuffer", /* wc.lpszClassName */
 176                          NULL,
 177                          dwStyle,
 178                          CW_USEDEFAULT, /* x */
 179                          CW_USEDEFAULT, /* y */
 180                          rect.right - rect.left, /* width */
 181                          rect.bottom - rect.top, /* height */
 182                          NULL,
 183                          NULL,
 184                          NULL,
 185                          NULL);
 186    if (!hWnd) {
 187       return 0;
 188    }
 189
 190 #ifdef DEBUG
 191    /*
 192     * Verify the client area size matches the specified size.
 193     */
 194
 195    GetClientRect(hWnd, &rect);
 196    assert(rect.left == 0);
 197    assert(rect.top == 0);
 198    assert(rect.right - rect.left == iWidth);
 199    assert(rect.bottom - rect.top == iHeight);
 200 #endif
 201
 202    hDC = GetDC(hWnd);
 203    if (!hDC) {
 204       return 0;
 205    }
 206
 207    SetPixelFormat(hDC, iPixelFormat, &info->pfd);
 208
 209    fb = stw_framebuffer_create(hDC, iPixelFormat);
 210    if (!fb) {
 211       SetLastError(ERROR_NO_SYSTEM_RESOURCES);
 212    } else {
 213       stw_framebuffer_release(fb);
 214    }
 215
 216    return (HPBUFFERARB)fb;
 217 }
 218
 219
 220 HDC WINAPI
 221 wglGetPbufferDCARB(HPBUFFERARB hPbuffer)
 222 {
 223    struct stw_framebuffer *fb;
 224    HDC hDC;
 225
 226    fb = (struct stw_framebuffer *)hPbuffer;
 227
 228    hDC = GetDC(fb->hWnd);
 229    SetPixelFormat(hDC, fb->iPixelFormat, &fb->pfi->pfd);
 230
 231    return hDC;
 232 }
 233
 234
 235 int WINAPI
 236 wglReleasePbufferDCARB(HPBUFFERARB hPbuffer,
 237                        HDC hDC)
 238 {
 239    struct stw_framebuffer *fb;
 240
 241    fb = (struct stw_framebuffer *)hPbuffer;
 242
 243    return ReleaseDC(fb->hWnd, hDC);
 244 }
 245
 246
 247 BOOL WINAPI
 248 wglDestroyPbufferARB(HPBUFFERARB hPbuffer)
 249 {
 250    struct stw_framebuffer *fb;
 251
 252    fb = (struct stw_framebuffer *)hPbuffer;
 253
 254    /* This will destroy all our data */
 255    return DestroyWindow(fb->hWnd);
 256 }
 257
 258
 259 BOOL WINAPI
 260 wglQueryPbufferARB(HPBUFFERARB hPbuffer,
 261                    int iAttribute,
 262                    int *piValue)
 263 {
 264    struct stw_framebuffer *fb;
 265
 266    fb = (struct stw_framebuffer *)hPbuffer;
 267
 268    switch (iAttribute) {
 269    case WGL_PBUFFER_WIDTH_ARB:
 270       *piValue = fb->width;
 271       return TRUE;
 272    case WGL_PBUFFER_HEIGHT_ARB:
 273       *piValue = fb->height;
 274       return TRUE;
 275    case WGL_PBUFFER_LOST_ARB:
 276       /* We assume that no content is ever lost due to display mode change */
 277       *piValue = FALSE;
 278       return TRUE;
 279    default:
 280       SetLastError(ERROR_INVALID_DATA);
 281       return FALSE;
 282    }
 283 }