mirror of
https://github.com/reactos/reactos.git
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122 lines
3.8 KiB
C
122 lines
3.8 KiB
C
/*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS kernel
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* PURPOSE: Native DirectDraw implementation
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* FILE: win32ss/reactx/ntddraw/d3dkmt.c
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* PROGRAMER: Sebastian Gasiorek (sebastian.gasiorek@reactos.com)
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*/
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#include <win32k.h>
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DWORD
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APIENTRY
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NtGdiDdDDICreateDCFromMemory(D3DKMT_CREATEDCFROMMEMORY *desc)
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{
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PSURFACE psurf;
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HDC hDC;
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const struct d3dddi_format_info
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{
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D3DDDIFORMAT format;
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unsigned int bit_count;
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DWORD compression;
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unsigned int palette_size;
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DWORD mask_r, mask_g, mask_b;
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} *format = NULL;
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unsigned int i;
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static const struct d3dddi_format_info format_info[] =
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{
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{ D3DDDIFMT_R8G8B8, 24, BI_RGB, 0, 0x00000000, 0x00000000, 0x00000000 },
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{ D3DDDIFMT_A8R8G8B8, 32, BI_RGB, 0, 0x00000000, 0x00000000, 0x00000000 },
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{ D3DDDIFMT_X8R8G8B8, 32, BI_RGB, 0, 0x00000000, 0x00000000, 0x00000000 },
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{ D3DDDIFMT_R5G6B5, 16, BI_BITFIELDS, 0, 0x0000f800, 0x000007e0, 0x0000001f },
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{ D3DDDIFMT_X1R5G5B5, 16, BI_BITFIELDS, 0, 0x00007c00, 0x000003e0, 0x0000001f },
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{ D3DDDIFMT_A1R5G5B5, 16, BI_BITFIELDS, 0, 0x00007c00, 0x000003e0, 0x0000001f },
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{ D3DDDIFMT_A4R4G4B4, 16, BI_BITFIELDS, 0, 0x00000f00, 0x000000f0, 0x0000000f },
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{ D3DDDIFMT_X4R4G4B4, 16, BI_BITFIELDS, 0, 0x00000f00, 0x000000f0, 0x0000000f },
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{ D3DDDIFMT_P8, 8, BI_RGB, 256, 0x00000000, 0x00000000, 0x00000000 },
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};
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if (!desc)
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return STATUS_INVALID_PARAMETER;
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if (!desc->pMemory)
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return STATUS_INVALID_PARAMETER;
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for (i = 0; i < sizeof(format_info) / sizeof(*format_info); ++i)
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{
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if (format_info[i].format == desc->Format)
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{
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format = &format_info[i];
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break;
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}
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}
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if (!format)
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return STATUS_INVALID_PARAMETER;
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if (desc->Width > (UINT_MAX & ~3) / (format->bit_count / 8) ||
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!desc->Pitch || desc->Pitch < (((desc->Width * format->bit_count + 31) >> 3) & ~3) ||
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!desc->Height || desc->Height > UINT_MAX / desc->Pitch)
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{
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return STATUS_INVALID_PARAMETER;
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}
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if (!desc->hDeviceDc || !(hDC = NtGdiCreateCompatibleDC(desc->hDeviceDc)))
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{
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return STATUS_INVALID_PARAMETER;
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}
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/* Allocate a surface */
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psurf = SURFACE_AllocSurface(STYPE_BITMAP,
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desc->Width,
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desc->Height,
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BitmapFormat(format->bit_count, format->compression),
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BMF_TOPDOWN | BMF_NOZEROINIT,
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desc->Pitch,
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0,
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desc->pMemory);
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/* Mark as API bitmap */
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psurf->flags |= (DDB_SURFACE | API_BITMAP);
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desc->hDc = hDC;
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/* Get the handle for the bitmap */
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desc->hBitmap = (HBITMAP)psurf->SurfObj.hsurf;
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/* Allocate a palette for this surface */
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if (format->bit_count <= 8)
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{
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PPALETTE palette = PALETTE_AllocPalette(PAL_INDEXED, 1 << format->bit_count, NULL, 0, 0, 0);
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if (palette)
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{
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SURFACE_vSetPalette(psurf, palette);
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PALETTE_ShareUnlockPalette(palette);
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}
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}
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/* Unlock the surface and return */
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SURFACE_UnlockSurface(psurf);
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NtGdiSelectBitmap(desc->hDc, desc->hBitmap);
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return STATUS_SUCCESS;
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}
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DWORD
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APIENTRY
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NtGdiDdDDIDestroyDCFromMemory(const D3DKMT_DESTROYDCFROMMEMORY *desc)
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{
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if (!desc)
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return STATUS_INVALID_PARAMETER;
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if (GDI_HANDLE_GET_TYPE(desc->hDc) != GDI_OBJECT_TYPE_DC ||
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GDI_HANDLE_GET_TYPE(desc->hBitmap) != GDI_OBJECT_TYPE_BITMAP)
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return STATUS_INVALID_PARAMETER;
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NtGdiDeleteObjectApp(desc->hBitmap);
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NtGdiDeleteObjectApp(desc->hDc);
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return STATUS_SUCCESS;
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}
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