wine/dlls/wined3d/palette.c
2011-05-17 10:06:23 +02:00

219 lines
6.6 KiB
C

/* DirectDraw - IDirectPalette base interface
*
* Copyright 1997-2000 Marcus Meissner
* Copyright 2000-2001 TransGaming Technologies Inc.
* Copyright 2006 Stefan Dösinger for CodeWeavers
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "config.h"
#include "winerror.h"
#include "wine/debug.h"
#include <string.h>
#include "wined3d_private.h"
WINE_DEFAULT_DEBUG_CHANNEL(d3d);
#define SIZE_BITS (WINEDDPCAPS_1BIT | WINEDDPCAPS_2BIT | WINEDDPCAPS_4BIT | WINEDDPCAPS_8BIT)
ULONG CDECL wined3d_palette_incref(struct wined3d_palette *palette)
{
ULONG refcount = InterlockedIncrement(&palette->ref);
TRACE("%p increasing refcount to %u.\n", palette, refcount);
return refcount;
}
ULONG CDECL wined3d_palette_decref(struct wined3d_palette *palette)
{
ULONG refcount = InterlockedDecrement(&palette->ref);
TRACE("%p decreasing refcount to %u.\n", palette, refcount);
if (!refcount)
{
DeleteObject(palette->hpal);
HeapFree(GetProcessHeap(), 0, palette);
}
return refcount;
}
static WORD wined3d_palette_size(DWORD flags)
{
switch (flags & SIZE_BITS)
{
case WINEDDPCAPS_1BIT: return 2;
case WINEDDPCAPS_2BIT: return 4;
case WINEDDPCAPS_4BIT: return 16;
case WINEDDPCAPS_8BIT: return 256;
default:
FIXME("Unhandled size bits %#x.\n", flags & SIZE_BITS);
return 256;
}
}
HRESULT CDECL wined3d_palette_get_entries(const struct wined3d_palette *palette,
DWORD flags, DWORD start, DWORD count, PALETTEENTRY *entries)
{
TRACE("palette %p, flags %#x, start %u, count %u, entries %p.\n",
palette, flags, start, count, entries);
if (flags) return WINED3DERR_INVALIDCALL; /* unchecked */
if (start + count > wined3d_palette_size(palette->flags))
return WINED3DERR_INVALIDCALL;
if (palette->flags & WINEDDPCAPS_8BITENTRIES)
{
BYTE *entry = (BYTE *)entries;
unsigned int i;
for (i = start; i < count + start; ++i)
*entry++ = palette->palents[i].peRed;
}
else
memcpy(entries, palette->palents + start, count * sizeof(*entries));
return WINED3D_OK;
}
HRESULT CDECL wined3d_palette_set_entries(struct wined3d_palette *palette,
DWORD flags, DWORD start, DWORD count, const PALETTEENTRY *entries)
{
struct wined3d_resource *resource;
TRACE("palette %p, flags %#x, start %u, count %u, entries %p.\n",
palette, flags, start, count, entries);
TRACE("Palette flags: %#x.\n", palette->flags);
if (palette->flags & WINEDDPCAPS_8BITENTRIES)
{
const BYTE *entry = (const BYTE *)entries;
unsigned int i;
for (i = start; i < count + start; ++i)
palette->palents[i].peRed = *entry++;
}
else
{
memcpy(palette->palents + start, entries, count * sizeof(*palette->palents));
/* When WINEDDCAPS_ALLOW256 isn't set we need to override entry 0 with black and 255 with white */
if (!(palette->flags & WINEDDPCAPS_ALLOW256))
{
TRACE("WINEDDPCAPS_ALLOW256 set, overriding palette entry 0 with black and 255 with white\n");
palette->palents[0].peRed = 0;
palette->palents[0].peGreen = 0;
palette->palents[0].peBlue = 0;
palette->palents[255].peRed = 255;
palette->palents[255].peGreen = 255;
palette->palents[255].peBlue = 255;
}
if (palette->hpal)
SetPaletteEntries(palette->hpal, start, count, palette->palents + start);
}
/* If the palette is attached to the render target, update all render targets */
LIST_FOR_EACH_ENTRY(resource, &palette->device->resources, struct wined3d_resource, resource_list_entry)
{
if (resource->resourceType == WINED3DRTYPE_SURFACE)
{
struct wined3d_surface *surface = surface_from_resource(resource);
if (surface->palette == palette)
surface->surface_ops->surface_realize_palette(surface);
}
}
return WINED3D_OK;
}
DWORD CDECL wined3d_palette_get_flags(const struct wined3d_palette *palette)
{
TRACE("palette %p.\n", palette);
return palette->flags;
}
void * CDECL wined3d_palette_get_parent(const struct wined3d_palette *palette)
{
TRACE("palette %p.\n", palette);
return palette->parent;
}
static HRESULT wined3d_palette_init(struct wined3d_palette *palette, struct wined3d_device *device,
DWORD flags, const PALETTEENTRY *entries, void *parent)
{
HRESULT hr;
palette->ref = 1;
palette->parent = parent;
palette->device = device;
palette->flags = flags;
palette->palNumEntries = wined3d_palette_size(flags);
palette->hpal = CreatePalette((const LOGPALETTE *)&palette->palVersion);
if (!palette->hpal)
{
WARN("Failed to create palette.\n");
return E_FAIL;
}
hr = wined3d_palette_set_entries(palette, 0, 0, wined3d_palette_size(flags), entries);
if (FAILED(hr))
{
WARN("Failed to set palette entries, hr %#x.\n", hr);
DeleteObject(palette->hpal);
return hr;
}
return WINED3D_OK;
}
HRESULT CDECL wined3d_palette_create(struct wined3d_device *device, DWORD flags,
const PALETTEENTRY *entries, void *parent, struct wined3d_palette **palette)
{
struct wined3d_palette *object;
HRESULT hr;
TRACE("device %p, flags %#x, entries %p, palette %p, parent %p.\n",
device, flags, entries, palette, parent);
object = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*object));
if (!object)
{
ERR("Failed to allocate palette memory.\n");
return E_OUTOFMEMORY;
}
hr = wined3d_palette_init(object, device, flags, entries, parent);
if (FAILED(hr))
{
WARN("Failed to initialize palette, hr %#x.\n", hr);
HeapFree(GetProcessHeap(), 0, object);
return hr;
}
TRACE("Created palette %p.\n", object);
*palette = object;
return WINED3D_OK;
}