mirror of
https://github.com/reactos/reactos.git
synced 2024-08-28 22:28:36 +00:00
257 lines
4.8 KiB
C
257 lines
4.8 KiB
C
/*
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* PROJECT: ReactOS win32 kernel mode subsystem
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* LICENSE: GPL - See COPYING in the top level directory
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* FILE: win32ss/gdi/ntgdi/wingl.c
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* PURPOSE: WinGL API
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* PROGRAMMER:
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*/
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#include <win32k.h>
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#define NDEBUG
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#include <debug.h>
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static
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INT
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FASTCALL
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IntGetipfdDevMax(PDC pdc)
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{
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INT Ret = 0;
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PPDEVOBJ ppdev = pdc->ppdev;
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if (ppdev->flFlags & PDEV_META_DEVICE)
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{
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return 0;
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}
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if (ppdev->DriverFunctions.DescribePixelFormat)
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{
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Ret = ppdev->DriverFunctions.DescribePixelFormat(
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ppdev->dhpdev,
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1,
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0,
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NULL);
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}
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if (Ret) pdc->ipfdDevMax = Ret;
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return Ret;
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}
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_Success_(return != 0)
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__kernel_entry
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INT
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APIENTRY
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NtGdiDescribePixelFormat(
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_In_ HDC hdc,
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_In_ INT ipfd,
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_In_ UINT cjpfd,
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_Out_writes_bytes_(cjpfd) PPIXELFORMATDESCRIPTOR ppfd)
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{
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PDC pdc;
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PPDEVOBJ ppdev;
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INT Ret = 0;
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PIXELFORMATDESCRIPTOR pfdSafe;
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if ((ppfd == NULL) && (cjpfd != 0)) return 0;
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pdc = DC_LockDc(hdc);
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if (!pdc)
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{
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EngSetLastError(ERROR_INVALID_HANDLE);
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return 0;
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}
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if (!pdc->ipfdDevMax)
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{
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if (!IntGetipfdDevMax(pdc))
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{
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/* EngSetLastError ? */
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goto Exit;
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}
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}
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if (!ppfd)
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{
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Ret = pdc->ipfdDevMax;
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goto Exit;
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}
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if ((ipfd < 1) || (ipfd > pdc->ipfdDevMax))
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{
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EngSetLastError(ERROR_INVALID_PARAMETER);
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goto Exit;
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}
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ppdev = pdc->ppdev;
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if (ppdev->flFlags & PDEV_META_DEVICE)
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{
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UNIMPLEMENTED;
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goto Exit;
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}
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if (ppdev->DriverFunctions.DescribePixelFormat)
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{
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Ret = ppdev->DriverFunctions.DescribePixelFormat(
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ppdev->dhpdev,
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ipfd,
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sizeof(pfdSafe),
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&pfdSafe);
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}
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if (Ret && cjpfd)
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{
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_SEH2_TRY
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{
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cjpfd = min(cjpfd, sizeof(PIXELFORMATDESCRIPTOR));
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ProbeForWrite(ppfd, cjpfd, 1);
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RtlCopyMemory(ppfd, &pfdSafe, cjpfd);
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}
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_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
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{
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SetLastNtError(_SEH2_GetExceptionCode());
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}
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_SEH2_END;
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}
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Exit:
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DC_UnlockDc(pdc);
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return Ret;
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}
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BOOL
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APIENTRY
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NtGdiSetPixelFormat(
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_In_ HDC hdc,
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_In_ INT ipfd)
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{
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PDC pdc;
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PPDEVOBJ ppdev;
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HWND hWnd;
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PWNDOBJ pWndObj;
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SURFOBJ *pso = NULL;
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BOOL Ret = FALSE;
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DPRINT1("Setting pixel format from win32k!\n");
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pdc = DC_LockDc(hdc);
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if (!pdc)
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{
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EngSetLastError(ERROR_INVALID_HANDLE);
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return FALSE;
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}
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if (!pdc->ipfdDevMax)
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IntGetipfdDevMax(pdc);
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if ( ipfd < 1 ||
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ipfd > pdc->ipfdDevMax )
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{
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EngSetLastError(ERROR_INVALID_PARAMETER);
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goto Exit;
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}
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UserEnterExclusive();
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hWnd = UserGethWnd(hdc, &pWndObj);
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UserLeave();
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if (!hWnd)
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{
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EngSetLastError(ERROR_INVALID_WINDOW_STYLE);
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goto Exit;
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}
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ppdev = pdc->ppdev;
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/*
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WndObj is needed so exit on NULL pointer.
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*/
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if (pWndObj)
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pso = pWndObj->psoOwner;
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else
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{
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EngSetLastError(ERROR_INVALID_PIXEL_FORMAT);
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goto Exit;
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}
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if (ppdev->flFlags & PDEV_META_DEVICE)
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{
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UNIMPLEMENTED;
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goto Exit;
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}
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if (ppdev->DriverFunctions.SetPixelFormat)
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{
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Ret = ppdev->DriverFunctions.SetPixelFormat(
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pso,
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ipfd,
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hWnd);
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}
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Exit:
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DC_UnlockDc(pdc);
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return Ret;
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}
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BOOL
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APIENTRY
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NtGdiSwapBuffers(
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_In_ HDC hdc)
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{
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PDC pdc;
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PPDEVOBJ ppdev;
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HWND hWnd;
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PWNDOBJ pWndObj;
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SURFOBJ *pso = NULL;
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BOOL Ret = FALSE;
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pdc = DC_LockDc(hdc);
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if (!pdc)
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{
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EngSetLastError(ERROR_INVALID_HANDLE);
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return FALSE;
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}
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UserEnterExclusive();
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hWnd = UserGethWnd(hdc, &pWndObj);
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UserLeave();
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if (!hWnd)
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{
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EngSetLastError(ERROR_INVALID_WINDOW_STYLE);
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goto Exit;
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}
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ppdev = pdc->ppdev;
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/*
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WndObj is needed so exit on NULL pointer.
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*/
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if (pWndObj)
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pso = pWndObj->psoOwner;
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else
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{
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EngSetLastError(ERROR_INVALID_PIXEL_FORMAT);
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goto Exit;
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}
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if (ppdev->flFlags & PDEV_META_DEVICE)
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{
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UNIMPLEMENTED;
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goto Exit;
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}
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if (ppdev->DriverFunctions.SwapBuffers)
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{
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Ret = ppdev->DriverFunctions.SwapBuffers(pso, pWndObj);
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}
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Exit:
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DC_UnlockDc(pdc);
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return Ret;
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}
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/* EOF */
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