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 "winerror.h"
  24 #include "wine/debug.h"
  25
  26 #include <string.h>
  27
  28 #include "wined3d_private.h"
  29
  30 WINE_DEFAULT_DEBUG_CHANNEL(d3d);
  31
  32 #define SIZE_BITS (WINEDDPCAPS_1BIT | WINEDDPCAPS_2BIT | WINEDDPCAPS_4BIT | WINEDDPCAPS_8BIT)
  33
  34 ULONG CDECL wined3d_palette_incref(struct wined3d_palette *palette)
  35 {
  36     ULONG refcount = InterlockedIncrement(&palette->ref);
  37
  38     TRACE("%p increasing refcount to %u.\n", palette, refcount);
  39
  40     return refcount;
  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     {
  51         DeleteObject(palette->hpal);
  52         HeapFree(GetProcessHeap(), 0, palette);
  53     }
  54
  55     return refcount;
  56 }
  57
  58 static WORD wined3d_palette_size(DWORD flags)
  59 {
  60     switch (flags & SIZE_BITS)
  61     {
  62         case WINEDDPCAPS_1BIT: return 2;
  63         case WINEDDPCAPS_2BIT: return 4;
  64         case WINEDDPCAPS_4BIT: return 16;
  65         case WINEDDPCAPS_8BIT: return 256;
  66         default:
  67             FIXME("Unhandled size bits %#x.\n", flags & SIZE_BITS);
  68             return 256;
  69     }
  70 }
  71
  72 HRESULT CDECL wined3d_palette_get_entries(const struct wined3d_palette *palette,
  73         DWORD flags, DWORD start, DWORD count, PALETTEENTRY *entries)
  74 {
  75     TRACE("palette %p, flags %#x, start %u, count %u, entries %p.\n",
  76             palette, flags, start, count, entries);
  77
  78     if (flags) return WINED3DERR_INVALIDCALL; /* unchecked */
  79     if (start + count > wined3d_palette_size(palette->flags))
  80         return WINED3DERR_INVALIDCALL;
  81
  82     if (palette->flags & WINEDDPCAPS_8BITENTRIES)
  83     {
  84         BYTE *entry = (BYTE *)entries;
  85         unsigned int i;
  86
  87         for (i = start; i < count + start; ++i)
  88             *entry++ = palette->palents[i].peRed;
  89     }
  90     else
  91         memcpy(entries, palette->palents + start, count * sizeof(*entries));
  92
  93     return WINED3D_OK;
  94 }
  95
  96 HRESULT CDECL wined3d_palette_set_entries(struct wined3d_palette *palette,
  97         DWORD flags, DWORD start, DWORD count, const PALETTEENTRY *entries)
  98 {
  99     struct wined3d_resource *resource;
 100
 101     TRACE("palette %p, flags %#x, start %u, count %u, entries %p.\n",
 102             palette, flags, start, count, entries);
 103     TRACE("Palette flags: %#x.\n", palette->flags);
 104
 105     if (palette->flags & WINEDDPCAPS_8BITENTRIES)
 106     {
 107         const BYTE *entry = (const BYTE *)entries;
 108         unsigned int i;
 109
 110         for (i = start; i < count + start; ++i)
 111             palette->palents[i].peRed = *entry++;
 112     }
 113     else
 114     {
 115         memcpy(palette->palents + start, entries, count * sizeof(*palette->palents));
 116
 117         /* When WINEDDCAPS_ALLOW256 isn't set we need to override entry 0 with black and 255 with white */
 118         if (!(palette->flags & WINEDDPCAPS_ALLOW256))
 119         {
 120             TRACE("WINEDDPCAPS_ALLOW256 set, overriding palette entry 0 with black and 255 with white\n");
 121             palette->palents[0].peRed = 0;
 122             palette->palents[0].peGreen = 0;
 123             palette->palents[0].peBlue = 0;
 124
 125             palette->palents[255].peRed = 255;
 126             palette->palents[255].peGreen = 255;
 127             palette->palents[255].peBlue = 255;
 128         }
 129
 130         if (palette->hpal)
 131             SetPaletteEntries(palette->hpal, start, count, palette->palents + start);
 132     }
 133
 134     /* If the palette is attached to the render target, update all render targets */
 135     LIST_FOR_EACH_ENTRY(resource, &palette->device->resources, struct wined3d_resource, resource_list_entry)
 136     {
 137         if (resource->type == WINED3D_RTYPE_SURFACE)
 138         {
 139             struct wined3d_surface *surface = surface_from_resource(resource);
 140             if (surface->palette == palette)
 141                 surface->surface_ops->surface_realize_palette(surface);
 142         }
 143     }
 144
 145     return WINED3D_OK;
 146 }
 147
 148 DWORD CDECL wined3d_palette_get_flags(const struct wined3d_palette *palette)
 149 {
 150     TRACE("palette %p.\n", palette);
 151
 152     return palette->flags;
 153 }
 154
 155 void * CDECL wined3d_palette_get_parent(const struct wined3d_palette *palette)
 156 {
 157     TRACE("palette %p.\n", palette);
 158
 159     return palette->parent;
 160 }
 161
 162 static HRESULT wined3d_palette_init(struct wined3d_palette *palette, struct wined3d_device *device,
 163         DWORD flags, const PALETTEENTRY *entries, void *parent)
 164 {
 165     HRESULT hr;
 166
 167     palette->ref = 1;
 168     palette->parent = parent;
 169     palette->device = device;
 170     palette->flags = flags;
 171
 172     palette->palNumEntries = wined3d_palette_size(flags);
 173     palette->hpal = CreatePalette((const LOGPALETTE *)&palette->palVersion);
 174     if (!palette->hpal)
 175     {
 176         WARN("Failed to create palette.\n");
 177         return E_FAIL;
 178     }
 179
 180     hr = wined3d_palette_set_entries(palette, 0, 0, wined3d_palette_size(flags), entries);
 181     if (FAILED(hr))
 182     {
 183         WARN("Failed to set palette entries, hr %#x.\n", hr);
 184         DeleteObject(palette->hpal);
 185         return hr;
 186     }
 187
 188     return WINED3D_OK;
 189 }
 190
 191 HRESULT CDECL wined3d_palette_create(struct wined3d_device *device, DWORD flags,
 192         const PALETTEENTRY *entries, void *parent, struct wined3d_palette **palette)
 193 {
 194     struct wined3d_palette *object;
 195     HRESULT hr;
 196
 197     TRACE("device %p, flags %#x, entries %p, palette %p, parent %p.\n",
 198             device, flags, entries, palette, parent);
 199
 200     object = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*object));
 201     if (!object)
 202     {
 203         ERR("Failed to allocate palette memory.\n");
 204         return E_OUTOFMEMORY;
 205     }
 206
 207     hr = wined3d_palette_init(object, device, flags, entries, parent);
 208     if (FAILED(hr))
 209     {
 210         WARN("Failed to initialize palette, hr %#x.\n", hr);
 211         HeapFree(GetProcessHeap(), 0, object);
 212         return hr;
 213     }
 214
 215     TRACE("Created palette %p.\n", object);
 216     *palette = object;
 217
 218     return WINED3D_OK;
 219 }