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 #include "config.h"
  22 #include "wine/port.h"
  23 #include "wined3d_private.h"
  24
  25 WINE_DEFAULT_DEBUG_CHANNEL(d3d);
  26
  27 ULONG CDECL wined3d_palette_incref(struct wined3d_palette *palette)
  28 {
  29     ULONG refcount = InterlockedIncrement(&palette->ref);
  30
  31     TRACE("%p increasing refcount to %u.\n", palette, refcount);
  32
  33     return refcount;
  34 }
  35
  36 static void wined3d_palette_destroy_object(void *object)
  37 {
  38     TRACE("object %p.\n", object);
  39
  40     heap_free(object);
  41 }
  42
  43 ULONG CDECL wined3d_palette_decref(struct wined3d_palette *palette)
  44 {
  45     ULONG refcount = InterlockedDecrement(&palette->ref);
  46
  47     TRACE("%p decreasing refcount to %u.\n", palette, refcount);
  48
  49     if (!refcount)
  50         wined3d_cs_destroy_object(palette->device->cs, wined3d_palette_destroy_object, palette);
  51
  52     return refcount;
  53 }
  54
  55 HRESULT CDECL wined3d_palette_get_entries(const struct wined3d_palette *palette,
  56         DWORD flags, DWORD start, DWORD count, PALETTEENTRY *entries)
  57 {
  58     unsigned int i;
  59     TRACE("palette %p, flags %#x, start %u, count %u, entries %p.\n",
  60             palette, flags, start, count, entries);
  61
  62     if (flags)
  63         return WINED3DERR_INVALIDCALL; /* unchecked */
  64     if (!wined3d_bound_range(start, count, palette->size))
  65         return WINED3DERR_INVALIDCALL;
  66
  67     if (palette->flags & WINED3D_PALETTE_8BIT_ENTRIES)
  68     {
  69         BYTE *entry = (BYTE *)entries;
  70
  71         for (i = start; i < count + start; ++i)
  72             *entry++ = palette->colors[i].rgbRed;
  73     }
  74     else
  75     {
  76         for (i = 0; i < count; ++i)
  77         {
  78             entries[i].peRed = palette->colors[i + start].rgbRed;
  79             entries[i].peGreen = palette->colors[i + start].rgbGreen;
  80             entries[i].peBlue = palette->colors[i + start].rgbBlue;
  81             entries[i].peFlags = palette->colors[i + start].rgbReserved;
  82         }
  83     }
  84
  85     return WINED3D_OK;
  86 }
  87
  88 void CDECL wined3d_palette_apply_to_dc(const struct wined3d_palette *palette, HDC dc)
  89 {
  90     if (SetDIBColorTable(dc, 0, 256, palette->colors) != 256)
  91         ERR("Failed to set DIB color table.\n");
  92 }
  93
  94 HRESULT CDECL wined3d_palette_set_entries(struct wined3d_palette *palette,
  95         DWORD flags, DWORD start, DWORD count, const PALETTEENTRY *entries)
  96 {
  97     unsigned int i;
  98
  99     TRACE("palette %p, flags %#x, start %u, count %u, entries %p.\n",
 100             palette, flags, start, count, entries);
 101     TRACE("Palette flags: %#x.\n", palette->flags);
 102
 103     wined3d_cs_finish(palette->device->cs, WINED3D_CS_QUEUE_DEFAULT);
 104
 105     if (palette->flags & WINED3D_PALETTE_8BIT_ENTRIES)
 106     {
 107         const BYTE *entry = (const BYTE *)entries;
 108
 109         for (i = start; i < count + start; ++i)
 110             palette->colors[i].rgbRed = *entry++;
 111     }
 112     else
 113     {
 114         for (i = 0; i < count; ++i)
 115         {
 116             palette->colors[i + start].rgbRed = entries[i].peRed;
 117             palette->colors[i + start].rgbGreen = entries[i].peGreen;
 118             palette->colors[i + start].rgbBlue = entries[i].peBlue;
 119             palette->colors[i + start].rgbReserved = entries[i].peFlags;
 120         }
 121
 122         /* When WINEDDCAPS_ALLOW256 isn't set we need to override entry 0 with black and 255 with white */
 123         if (!(palette->flags & WINED3D_PALETTE_ALLOW_256))
 124         {
 125             TRACE("WINED3D_PALETTE_ALLOW_256 not set, overriding palette entry 0 with black and 255 with white.\n");
 126             palette->colors[0].rgbRed = 0;
 127             palette->colors[0].rgbGreen = 0;
 128             palette->colors[0].rgbBlue = 0;
 129
 130             palette->colors[255].rgbRed = 255;
 131             palette->colors[255].rgbGreen = 255;
 132             palette->colors[255].rgbBlue = 255;
 133         }
 134     }
 135
 136     return WINED3D_OK;
 137 }
 138
 139 static HRESULT wined3d_palette_init(struct wined3d_palette *palette, struct wined3d_device *device,
 140         DWORD flags, unsigned int entry_count, const PALETTEENTRY *entries)
 141 {
 142     HRESULT hr;
 143
 144     palette->ref = 1;
 145     palette->device = device;
 146     palette->flags = flags;
 147     palette->size = entry_count;
 148
 149     if (FAILED(hr = wined3d_palette_set_entries(palette, 0, 0, entry_count, entries)))
 150     {
 151         WARN("Failed to set palette entries, hr %#x.\n", hr);
 152         return hr;
 153     }
 154
 155     return WINED3D_OK;
 156 }
 157
 158 HRESULT CDECL wined3d_palette_create(struct wined3d_device *device, DWORD flags,
 159         unsigned int entry_count, const PALETTEENTRY *entries, struct wined3d_palette **palette)
 160 {
 161     struct wined3d_palette *object;
 162     HRESULT hr;
 163
 164     TRACE("device %p, flags %#x, entry_count %u, entries %p, palette %p.\n",
 165             device, flags, entry_count, entries, palette);
 166
 167     if (!(object = heap_alloc_zero(sizeof(*object))))
 168         return E_OUTOFMEMORY;
 169
 170     if (FAILED(hr = wined3d_palette_init(object, device, flags, entry_count, entries)))
 171     {
 172         WARN("Failed to initialize palette, hr %#x.\n", hr);
 173         heap_free(object);
 174         return hr;
 175     }
 176
 177     TRACE("Created palette %p.\n", object);
 178     *palette = object;
 179
 180     return WINED3D_OK;
 181 }