dlls/wined3d/palette.c

   1 /*              DirectDraw - IDirectPalette base interface
   2  *
   3  * Copyright 1997-2000 Marcus Meissner
   4  * Copyright 2000-2001 TransGaming Technologies Inc.
   5  * Copyright 2006 Stefan Dösinger for CodeWeavers
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  20  */
  21
  22 #include "wined3d_private.h"
  23
  24 WINE_DEFAULT_DEBUG_CHANNEL(d3d);
  25
  26 ULONG CDECL wined3d_palette_incref(struct wined3d_palette *palette)
  27 {
  28     ULONG refcount = InterlockedIncrement(&palette->ref);
  29
  30     TRACE("%p increasing refcount to %u.\n", palette, refcount);
  31
  32     return refcount;
  33 }
  34
  35 static void wined3d_palette_destroy_object(void *object)
  36 {
  37     TRACE("object %p.\n", object);
  38
  39     heap_free(object);
  40 }
  41
  42 ULONG CDECL wined3d_palette_decref(struct wined3d_palette *palette)
  43 {
  44     ULONG refcount = InterlockedDecrement(&palette->ref);
  45
  46     TRACE("%p decreasing refcount to %u.\n", palette, refcount);
  47
  48     if (!refcount)
  49     {
  50         wined3d_mutex_lock();
  51         wined3d_cs_destroy_object(palette->device->cs, wined3d_palette_destroy_object, palette);
  52         wined3d_mutex_unlock();
  53     }
  54
  55     return refcount;
  56 }
  57
  58 HRESULT CDECL wined3d_palette_get_entries(const struct wined3d_palette *palette,
  59         DWORD flags, DWORD start, DWORD count, PALETTEENTRY *entries)
  60 {
  61     unsigned int i;
  62     TRACE("palette %p, flags %#x, start %u, count %u, entries %p.\n",
  63             palette, flags, start, count, entries);
  64
  65     if (flags)
  66         return WINED3DERR_INVALIDCALL; /* unchecked */
  67     if (!wined3d_bound_range(start, count, palette->size))
  68         return WINED3DERR_INVALIDCALL;
  69
  70     if (palette->flags & WINED3D_PALETTE_8BIT_ENTRIES)
  71     {
  72         BYTE *entry = (BYTE *)entries;
  73
  74         for (i = start; i < count + start; ++i)
  75             *entry++ = palette->colors[i].rgbRed;
  76     }
  77     else
  78     {
  79         for (i = 0; i < count; ++i)
  80         {
  81             entries[i].peRed = palette->colors[i + start].rgbRed;
  82             entries[i].peGreen = palette->colors[i + start].rgbGreen;
  83             entries[i].peBlue = palette->colors[i + start].rgbBlue;
  84             entries[i].peFlags = palette->colors[i + start].rgbReserved;
  85         }
  86     }
  87
  88     return WINED3D_OK;
  89 }
  90
  91 void CDECL wined3d_palette_apply_to_dc(const struct wined3d_palette *palette, HDC dc)
  92 {
  93     if (SetDIBColorTable(dc, 0, 256, palette->colors) != 256)
  94         ERR("Failed to set DIB color table.\n");
  95 }
  96
  97 HRESULT CDECL wined3d_palette_set_entries(struct wined3d_palette *palette,
  98         DWORD flags, DWORD start, DWORD count, const PALETTEENTRY *entries)
  99 {
 100     unsigned int i;
 101
 102     TRACE("palette %p, flags %#x, start %u, count %u, entries %p.\n",
 103             palette, flags, start, count, entries);
 104     TRACE("Palette flags: %#x.\n", palette->flags);
 105
 106     wined3d_cs_finish(palette->device->cs, WINED3D_CS_QUEUE_DEFAULT);
 107
 108     if (palette->flags & WINED3D_PALETTE_8BIT_ENTRIES)
 109     {
 110         const BYTE *entry = (const BYTE *)entries;
 111
 112         for (i = start; i < count + start; ++i)
 113             palette->colors[i].rgbRed = *entry++;
 114     }
 115     else
 116     {
 117         for (i = 0; i < count; ++i)
 118         {
 119             palette->colors[i + start].rgbRed = entries[i].peRed;
 120             palette->colors[i + start].rgbGreen = entries[i].peGreen;
 121             palette->colors[i + start].rgbBlue = entries[i].peBlue;
 122             palette->colors[i + start].rgbReserved = entries[i].peFlags;
 123         }
 124
 125         /* When WINEDDCAPS_ALLOW256 isn't set we need to override entry 0 with black and 255 with white */
 126         if (!(palette->flags & WINED3D_PALETTE_ALLOW_256))
 127         {
 128             TRACE("WINED3D_PALETTE_ALLOW_256 not set, overriding palette entry 0 with black and 255 with white.\n");
 129             palette->colors[0].rgbRed = 0;
 130             palette->colors[0].rgbGreen = 0;
 131             palette->colors[0].rgbBlue = 0;
 132
 133             palette->colors[255].rgbRed = 255;
 134             palette->colors[255].rgbGreen = 255;
 135             palette->colors[255].rgbBlue = 255;
 136         }
 137     }
 138
 139     return WINED3D_OK;
 140 }
 141
 142 static HRESULT wined3d_palette_init(struct wined3d_palette *palette, struct wined3d_device *device,
 143         DWORD flags, unsigned int entry_count, const PALETTEENTRY *entries)
 144 {
 145     HRESULT hr;
 146
 147     palette->ref = 1;
 148     palette->device = device;
 149     palette->flags = flags;
 150     palette->size = entry_count;
 151
 152     if (FAILED(hr = wined3d_palette_set_entries(palette, 0, 0, entry_count, entries)))
 153     {
 154         WARN("Failed to set palette entries, hr %#x.\n", hr);
 155         return hr;
 156     }
 157
 158     return WINED3D_OK;
 159 }
 160
 161 HRESULT CDECL wined3d_palette_create(struct wined3d_device *device, DWORD flags,
 162         unsigned int entry_count, const PALETTEENTRY *entries, struct wined3d_palette **palette)
 163 {
 164     struct wined3d_palette *object;
 165     HRESULT hr;
 166
 167     TRACE("device %p, flags %#x, entry_count %u, entries %p, palette %p.\n",
 168             device, flags, entry_count, entries, palette);
 169
 170     if (!(object = heap_alloc_zero(sizeof(*object))))
 171         return E_OUTOFMEMORY;
 172
 173     if (FAILED(hr = wined3d_palette_init(object, device, flags, entry_count, entries)))
 174     {
 175         WARN("Failed to initialize palette, hr %#x.\n", hr);
 176         heap_free(object);
 177         return hr;
 178     }
 179
 180     TRACE("Created palette %p.\n", object);
 181     *palette = object;
 182
 183     return WINED3D_OK;
 184 }