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 ULONG CDECL wined3d_palette_incref(struct wined3d_palette *palette)
  33 {
  34     ULONG refcount = InterlockedIncrement(&palette->ref);
  35
  36     TRACE("%p increasing refcount to %u.\n", palette, refcount);
  37
  38     return refcount;
  39 }
  40
  41 ULONG CDECL wined3d_palette_decref(struct wined3d_palette *palette)
  42 {
  43     ULONG refcount = InterlockedDecrement(&palette->ref);
  44
  45     TRACE("%p decreasing refcount to %u.\n", palette, refcount);
  46
  47     if (!refcount)
  48     {
  49         DeleteObject(palette->hpal);
  50         HeapFree(GetProcessHeap(), 0, palette);
  51     }
  52
  53     return refcount;
  54 }
  55
  56 HRESULT CDECL wined3d_palette_get_entries(const struct wined3d_palette *palette,
  57         DWORD flags, DWORD start, DWORD count, PALETTEENTRY *entries)
  58 {
  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 (start > palette->palNumEntries || count > palette->palNumEntries - start)
  65         return WINED3DERR_INVALIDCALL;
  66
  67     if (palette->flags & WINED3D_PALETTE_8BIT_ENTRIES)
  68     {
  69         BYTE *entry = (BYTE *)entries;
  70         unsigned int i;
  71
  72         for (i = start; i < count + start; ++i)
  73             *entry++ = palette->palents[i].peRed;
  74     }
  75     else
  76         memcpy(entries, palette->palents + start, count * sizeof(*entries));
  77
  78     return WINED3D_OK;
  79 }
  80
  81 HRESULT CDECL wined3d_palette_set_entries(struct wined3d_palette *palette,
  82         DWORD flags, DWORD start, DWORD count, const PALETTEENTRY *entries)
  83 {
  84     struct wined3d_resource *resource;
  85
  86     TRACE("palette %p, flags %#x, start %u, count %u, entries %p.\n",
  87             palette, flags, start, count, entries);
  88     TRACE("Palette flags: %#x.\n", palette->flags);
  89
  90     if (palette->flags & WINED3D_PALETTE_8BIT_ENTRIES)
  91     {
  92         const BYTE *entry = (const BYTE *)entries;
  93         unsigned int i;
  94
  95         for (i = start; i < count + start; ++i)
  96             palette->palents[i].peRed = *entry++;
  97     }
  98     else
  99     {
 100         memcpy(palette->palents + start, entries, count * sizeof(*palette->palents));
 101
 102         /* When WINEDDCAPS_ALLOW256 isn't set we need to override entry 0 with black and 255 with white */
 103         if (!(palette->flags & WINED3D_PALETTE_ALLOW_256))
 104         {
 105             TRACE("WINED3D_PALETTE_ALLOW_256 not set, overriding palette entry 0 with black and 255 with white.\n");
 106             palette->palents[0].peRed = 0;
 107             palette->palents[0].peGreen = 0;
 108             palette->palents[0].peBlue = 0;
 109
 110             palette->palents[255].peRed = 255;
 111             palette->palents[255].peGreen = 255;
 112             palette->palents[255].peBlue = 255;
 113         }
 114
 115         if (palette->hpal)
 116             SetPaletteEntries(palette->hpal, start, count, palette->palents + start);
 117     }
 118
 119     /* If the palette is attached to the render target, update all render targets */
 120     LIST_FOR_EACH_ENTRY(resource, &palette->device->resources, struct wined3d_resource, resource_list_entry)
 121     {
 122         if (resource->type == WINED3D_RTYPE_SURFACE)
 123         {
 124             struct wined3d_surface *surface = surface_from_resource(resource);
 125             if (surface->palette == palette)
 126                 surface->surface_ops->surface_realize_palette(surface);
 127         }
 128     }
 129
 130     return WINED3D_OK;
 131 }
 132
 133 static HRESULT wined3d_palette_init(struct wined3d_palette *palette, struct wined3d_device *device,
 134         DWORD flags, unsigned int entry_count, const PALETTEENTRY *entries)
 135 {
 136     HRESULT hr;
 137
 138     palette->ref = 1;
 139     palette->device = device;
 140     palette->flags = flags;
 141
 142     palette->palNumEntries = entry_count;
 143     palette->hpal = CreatePalette((const LOGPALETTE *)&palette->palVersion);
 144     if (!palette->hpal)
 145     {
 146         WARN("Failed to create palette.\n");
 147         return E_FAIL;
 148     }
 149
 150     if (FAILED(hr = wined3d_palette_set_entries(palette, 0, 0, entry_count, entries)))
 151     {
 152         WARN("Failed to set palette entries, hr %#x.\n", hr);
 153         DeleteObject(palette->hpal);
 154         return hr;
 155     }
 156
 157     return WINED3D_OK;
 158 }
 159
 160 HRESULT CDECL wined3d_palette_create(struct wined3d_device *device, DWORD flags,
 161         unsigned int entry_count, const PALETTEENTRY *entries, struct wined3d_palette **palette)
 162 {
 163     struct wined3d_palette *object;
 164     HRESULT hr;
 165
 166     TRACE("device %p, flags %#x, entries %p, palette %p.\n",
 167             device, flags, entries, palette);
 168
 169     object = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*object));
 170     if (!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         HeapFree(GetProcessHeap(), 0, object);
 177         return hr;
 178     }
 179
 180     TRACE("Created palette %p.\n", object);
 181     *palette = object;
 182
 183     return WINED3D_OK;
 184 }