1 /* DirectDraw - IDirectPalette base interface
3 * Copyright 1997-2000 Marcus Meissner
4 * Copyright 2000-2001 TransGaming Technologies Inc.
5 * Copyright 2006 Stefan Dösinger for CodeWeavers
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.
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.
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
23 #include "wine/debug.h"
27 #include "wined3d_private.h"
29 WINE_DEFAULT_DEBUG_CHANNEL(d3d);
31 #define SIZE_BITS (WINEDDPCAPS_1BIT | WINEDDPCAPS_2BIT | WINEDDPCAPS_4BIT | WINEDDPCAPS_8BIT)
33 ULONG CDECL wined3d_palette_incref(struct wined3d_palette *palette)
35 ULONG refcount = InterlockedIncrement(&palette->ref);
37 TRACE("%p increasing refcount to %u.\n", palette, refcount);
42 ULONG CDECL wined3d_palette_decref(struct wined3d_palette *palette)
44 ULONG refcount = InterlockedDecrement(&palette->ref);
46 TRACE("%p decreasing refcount to %u.\n", palette, refcount);
50 DeleteObject(palette->hpal);
51 HeapFree(GetProcessHeap(), 0, palette);
57 static WORD wined3d_palette_size(DWORD flags)
59 switch (flags & SIZE_BITS)
61 case WINEDDPCAPS_1BIT: return 2;
62 case WINEDDPCAPS_2BIT: return 4;
63 case WINEDDPCAPS_4BIT: return 16;
64 case WINEDDPCAPS_8BIT: return 256;
66 FIXME("Unhandled size bits %#x.\n", flags & SIZE_BITS);
71 HRESULT CDECL wined3d_palette_get_entries(const struct wined3d_palette *palette,
72 DWORD flags, DWORD start, DWORD count, PALETTEENTRY *entries)
74 TRACE("palette %p, flags %#x, start %u, count %u, entries %p.\n",
75 palette, flags, start, count, entries);
77 if (flags) return WINED3DERR_INVALIDCALL; /* unchecked */
78 if (start + count > wined3d_palette_size(palette->flags))
79 return WINED3DERR_INVALIDCALL;
81 if (palette->flags & WINEDDPCAPS_8BITENTRIES)
83 BYTE *entry = (BYTE *)entries;
86 for (i = start; i < count + start; ++i)
87 *entry++ = palette->palents[i].peRed;
90 memcpy(entries, palette->palents + start, count * sizeof(*entries));
95 HRESULT CDECL wined3d_palette_set_entries(struct wined3d_palette *palette,
96 DWORD flags, DWORD start, DWORD count, const PALETTEENTRY *entries)
98 struct wined3d_resource *resource;
100 TRACE("palette %p, flags %#x, start %u, count %u, entries %p.\n",
101 palette, flags, start, count, entries);
102 TRACE("Palette flags: %#x.\n", palette->flags);
104 if (palette->flags & WINEDDPCAPS_8BITENTRIES)
106 const BYTE *entry = (const BYTE *)entries;
109 for (i = start; i < count + start; ++i)
110 palette->palents[i].peRed = *entry++;
114 memcpy(palette->palents + start, entries, count * sizeof(*palette->palents));
116 /* When WINEDDCAPS_ALLOW256 isn't set we need to override entry 0 with black and 255 with white */
117 if (!(palette->flags & WINEDDPCAPS_ALLOW256))
119 TRACE("WINEDDPCAPS_ALLOW256 set, overriding palette entry 0 with black and 255 with white\n");
120 palette->palents[0].peRed = 0;
121 palette->palents[0].peGreen = 0;
122 palette->palents[0].peBlue = 0;
124 palette->palents[255].peRed = 255;
125 palette->palents[255].peGreen = 255;
126 palette->palents[255].peBlue = 255;
130 SetPaletteEntries(palette->hpal, start, count, palette->palents + start);
133 /* If the palette is attached to the render target, update all render targets */
134 LIST_FOR_EACH_ENTRY(resource, &palette->device->resources, struct wined3d_resource, resource_list_entry)
136 if (resource->resourceType == WINED3DRTYPE_SURFACE)
138 struct wined3d_surface *surface = surface_from_resource(resource);
139 if (surface->palette == palette)
140 surface->surface_ops->surface_realize_palette(surface);
147 DWORD CDECL wined3d_palette_get_flags(const struct wined3d_palette *palette)
149 TRACE("palette %p.\n", palette);
151 return palette->flags;
154 void * CDECL wined3d_palette_get_parent(const struct wined3d_palette *palette)
156 TRACE("palette %p.\n", palette);
158 return palette->parent;
161 static HRESULT wined3d_palette_init(struct wined3d_palette *palette, struct wined3d_device *device,
162 DWORD flags, const PALETTEENTRY *entries, void *parent)
167 palette->parent = parent;
168 palette->device = device;
169 palette->flags = flags;
171 palette->palNumEntries = wined3d_palette_size(flags);
172 palette->hpal = CreatePalette((const LOGPALETTE *)&palette->palVersion);
175 WARN("Failed to create palette.\n");
179 hr = wined3d_palette_set_entries(palette, 0, 0, wined3d_palette_size(flags), entries);
182 WARN("Failed to set palette entries, hr %#x.\n", hr);
183 DeleteObject(palette->hpal);
190 HRESULT CDECL wined3d_palette_create(struct wined3d_device *device, DWORD flags,
191 const PALETTEENTRY *entries, void *parent, struct wined3d_palette **palette)
193 struct wined3d_palette *object;
196 TRACE("device %p, flags %#x, entries %p, palette %p, parent %p.\n",
197 device, flags, entries, palette, parent);
199 object = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*object));
202 ERR("Failed to allocate palette memory.\n");
203 return E_OUTOFMEMORY;
206 hr = wined3d_palette_init(object, device, flags, entries, parent);
209 WARN("Failed to initialize palette, hr %#x.\n", hr);
210 HeapFree(GetProcessHeap(), 0, object);
214 TRACE("Created palette %p.\n", object);