dlls/ddraw/light.c

   1 /* Direct3D Light
   2  * Copyright (c) 1998 / 2002 Lionel ULMER
   3  * Copyright (c) 2006        Stefan DÖSINGER
   4  *
   5  * This file contains the implementation of Direct3DLight.
   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
  22 #include "config.h"
  23 #include "wine/port.h"
  24 #include "wine/debug.h"
  25
  26 #include <assert.h>
  27 #include <stdarg.h>
  28 #include <string.h>
  29 #include <stdlib.h>
  30
  31 #define COBJMACROS
  32
  33 #include "windef.h"
  34 #include "winbase.h"
  35 #include "winerror.h"
  36 #include "wingdi.h"
  37 #include "wine/exception.h"
  38
  39 #include "ddraw.h"
  40 #include "d3d.h"
  41
  42 #include "ddraw_private.h"
  43
  44 WINE_DEFAULT_DEBUG_CHANNEL(d3d7);
  45
  46 /*****************************************************************************
  47  * IUnknown Methods.
  48  *****************************************************************************/
  49
  50 /*****************************************************************************
  51  * IDirect3DLight::QueryInterface
  52  *
  53  * Queries the object for different interfaces. Unimplemented for this
  54  * object at the moment
  55  *
  56  * Params:
  57  *  riid: Interface id asked for
  58  *  obj: Address to return the resulting pointer at.
  59  *
  60  * Returns:
  61  *  E_NOINTERFACE, because it's a stub
  62  *****************************************************************************/
  63 static HRESULT WINAPI
  64 IDirect3DLightImpl_QueryInterface(IDirect3DLight *iface,
  65                                   REFIID riid,
  66                                   void **obp)
  67 {
  68     ICOM_THIS_FROM(IDirect3DLightImpl, IDirect3DLight, iface);
  69     FIXME("(%p)->(%s,%p): stub!\n", This, debugstr_guid(riid), obp);
  70     *obp = NULL;
  71     return E_NOINTERFACE;
  72 }
  73
  74 /*****************************************************************************
  75  * IDirect3DLight::AddRef
  76  *
  77  * Increases the refcount by 1
  78  *
  79  * Returns:
  80  *  The new refcount
  81  *
  82  *****************************************************************************/
  83 static ULONG WINAPI
  84 IDirect3DLightImpl_AddRef(IDirect3DLight *iface)
  85 {
  86     ICOM_THIS_FROM(IDirect3DLightImpl, IDirect3DLight, iface);
  87     ULONG ref = InterlockedIncrement(&This->ref);
  88
  89     TRACE("(%p)->() incrementing from %u.\n", This, ref - 1);
  90
  91     return ref;
  92 }
  93
  94 /*****************************************************************************
  95  * IDirect3DLight::Release
  96  *
  97  * Reduces the refcount by one. If the refcount falls to 0, the object
  98  * is destroyed
  99  *
 100  * Returns:
 101  *  The new refcount
 102  *
 103  *****************************************************************************/
 104 static ULONG WINAPI
 105 IDirect3DLightImpl_Release(IDirect3DLight *iface)
 106 {
 107     ICOM_THIS_FROM(IDirect3DLightImpl, IDirect3DLight, iface);
 108     ULONG ref = InterlockedDecrement(&This->ref);
 109
 110     TRACE("(%p)->() decrementing from %u.\n", This, ref + 1);
 111
 112     if (!ref) {
 113         HeapFree(GetProcessHeap(), 0, This);
 114         return 0;
 115     }
 116     return ref;
 117 }
 118
 119 /*****************************************************************************
 120  * IDirect3DLight Methods.
 121  *****************************************************************************/
 122
 123 /*****************************************************************************
 124  * IDirect3DLight::Initialize
 125  *
 126  * Initializes the interface. This implementation is a no-op, because
 127  * initialization takes place at creation time
 128  *
 129  * Params:
 130  *  Direct3D: Pointer to an IDirect3D interface.
 131  *
 132  * Returns:
 133  *  D3D_OK
 134  *
 135  *****************************************************************************/
 136 static HRESULT WINAPI
 137 IDirect3DLightImpl_Initialize(IDirect3DLight *iface,
 138                               IDirect3D *lpDirect3D)
 139 {
 140     ICOM_THIS_FROM(IDirect3DLightImpl, IDirect3DLight, iface);
 141     IDirectDrawImpl *d3d = ICOM_OBJECT(IDirectDrawImpl, IDirect3D, lpDirect3D);
 142     TRACE("(%p)->(%p) no-op...\n", This, d3d);
 143     return D3D_OK;
 144 }
 145
 146 /*****************************************************************************
 147  * IDirect3DLight::SetLight
 148  *
 149  * Assigns a lighting value to this object
 150  *
 151  * Params:
 152  *  Light: Lighting parameter to set
 153  *
 154  * Returns:
 155  *  D3D_OK on success
 156  *  DDERR_INVALIDPARAMS if Light is NULL
 157  *
 158  *****************************************************************************/
 159 static void dump_light(const D3DLIGHT2 *light)
 160 {
 161     TRACE("    - dwSize : %d\n", light->dwSize);
 162 }
 163
 164 static const float zero_value[] = {
 165     0.0, 0.0, 0.0, 0.0
 166 };
 167
 168 static HRESULT WINAPI
 169 IDirect3DLightImpl_SetLight(IDirect3DLight *iface,
 170                             D3DLIGHT *lpLight)
 171 {
 172     ICOM_THIS_FROM(IDirect3DLightImpl, IDirect3DLight, iface);
 173     LPD3DLIGHT7 light7 = &(This->light7);
 174     TRACE("(%p)->(%p)\n", This, lpLight);
 175     if (TRACE_ON(d3d7)) {
 176         TRACE("  Light definition :\n");
 177         dump_light((LPD3DLIGHT2) lpLight);
 178     }
 179
 180     if ( (lpLight->dltType == 0) || (lpLight->dltType > D3DLIGHT_PARALLELPOINT) )
 181          return DDERR_INVALIDPARAMS;
 182
 183     if ( lpLight->dltType == D3DLIGHT_PARALLELPOINT )
 184          FIXME("D3DLIGHT_PARALLELPOINT no supported\n");
 185
 186     /* Translate D3DLIGH2 structure to D3DLIGHT7 */
 187     light7->dltType        = lpLight->dltType;
 188     light7->dcvDiffuse     = lpLight->dcvColor;
 189     if ((((LPD3DLIGHT2)lpLight)->dwFlags & D3DLIGHT_NO_SPECULAR) != 0)
 190       light7->dcvSpecular    = lpLight->dcvColor;
 191     else
 192       light7->dcvSpecular    = *(const D3DCOLORVALUE*)zero_value;
 193     light7->dcvAmbient     = lpLight->dcvColor;
 194     light7->dvPosition     = lpLight->dvPosition;
 195     light7->dvDirection    = lpLight->dvDirection;
 196     light7->dvRange        = lpLight->dvRange;
 197     light7->dvFalloff      = lpLight->dvFalloff;
 198     light7->dvAttenuation0 = lpLight->dvAttenuation0;
 199     light7->dvAttenuation1 = lpLight->dvAttenuation1;
 200     light7->dvAttenuation2 = lpLight->dvAttenuation2;
 201     light7->dvTheta        = lpLight->dvTheta;
 202     light7->dvPhi          = lpLight->dvPhi;
 203
 204     EnterCriticalSection(&ddraw_cs);
 205     memcpy(&This->light, lpLight, lpLight->dwSize);
 206     if ((This->light.dwFlags & D3DLIGHT_ACTIVE) != 0) {
 207         This->update(This);
 208     }
 209     LeaveCriticalSection(&ddraw_cs);
 210     return D3D_OK;
 211 }
 212
 213 /*****************************************************************************
 214  * IDirect3DLight::GetLight
 215  *
 216  * Returns the parameters currently assigned to the IDirect3DLight object
 217  *
 218  * Params:
 219  *  Light: Pointer to an D3DLIGHT structure to store the parameters
 220  *
 221  * Returns:
 222  *  D3D_OK on success
 223  *  DDERR_INVALIDPARAMS if Light is NULL
 224  *****************************************************************************/
 225 static HRESULT WINAPI
 226 IDirect3DLightImpl_GetLight(IDirect3DLight *iface,
 227                             D3DLIGHT *lpLight)
 228 {
 229     ICOM_THIS_FROM(IDirect3DLightImpl, IDirect3DLight, iface);
 230     TRACE("(%p/%p)->(%p)\n", This, iface, lpLight);
 231     if (TRACE_ON(d3d7)) {
 232         TRACE("  Returning light definition :\n");
 233         dump_light(&This->light);
 234     }
 235
 236     EnterCriticalSection(&ddraw_cs);
 237     memcpy(lpLight, &This->light, lpLight->dwSize);
 238     LeaveCriticalSection(&ddraw_cs);
 239
 240     return DD_OK;
 241 }
 242
 243 /*****************************************************************************
 244  * light_update
 245  *
 246  * Updates the Direct3DDevice7 lighting parameters
 247  *
 248  *****************************************************************************/
 249 void light_update(IDirect3DLightImpl* This)
 250 {
 251     IDirect3DDeviceImpl* device;
 252
 253     TRACE("(%p)\n", This);
 254
 255     if (!This->active_viewport || !This->active_viewport->active_device)
 256         return;
 257     device =  This->active_viewport->active_device;
 258
 259     IDirect3DDevice7_SetLight(ICOM_INTERFACE(device,IDirect3DDevice7), This->dwLightIndex, &(This->light7));
 260 }
 261
 262 /*****************************************************************************
 263  * light_activate
 264  *
 265  * Uses the Direct3DDevice7::LightEnable method to active the light
 266  *
 267  *****************************************************************************/
 268 void light_activate(IDirect3DLightImpl* This)
 269 {
 270     IDirect3DDeviceImpl* device;
 271
 272     TRACE("(%p)\n", This);
 273
 274     if (!This->active_viewport || !This->active_viewport->active_device)
 275         return;
 276     device =  This->active_viewport->active_device;
 277
 278     light_update(This);
 279     /* If was not active, activate it */
 280     if ((This->light.dwFlags & D3DLIGHT_ACTIVE) == 0) {
 281         IDirect3DDevice7_LightEnable(ICOM_INTERFACE(device,IDirect3DDevice7), This->dwLightIndex, TRUE);
 282         This->light.dwFlags |= D3DLIGHT_ACTIVE;
 283     }
 284 }
 285
 286 /*****************************************************************************
 287  *
 288  * light_desactivate
 289  *
 290  * Uses the Direct3DDevice7::LightEnable method to deactivate the light
 291  *
 292  *****************************************************************************/
 293 void light_desactivate(IDirect3DLightImpl* This)
 294 {
 295     IDirect3DDeviceImpl* device;
 296
 297     TRACE("(%p)\n", This);
 298
 299     if (!This->active_viewport || !This->active_viewport->active_device)
 300         return;
 301     device =  This->active_viewport->active_device;
 302
 303     /* If was not active, activate it */
 304     if ((This->light.dwFlags & D3DLIGHT_ACTIVE) != 0) {
 305         IDirect3DDevice7_LightEnable(ICOM_INTERFACE(device,IDirect3DDevice7), This->dwLightIndex, FALSE);
 306         This->light.dwFlags &= ~D3DLIGHT_ACTIVE;
 307     }
 308 }
 309
 310 const IDirect3DLightVtbl IDirect3DLight_Vtbl =
 311 {
 312     /*** IUnknown Methods ***/
 313     IDirect3DLightImpl_QueryInterface,
 314     IDirect3DLightImpl_AddRef,
 315     IDirect3DLightImpl_Release,
 316     /*** IDirect3DLight Methods ***/
 317     IDirect3DLightImpl_Initialize,
 318     IDirect3DLightImpl_SetLight,
 319     IDirect3DLightImpl_GetLight
 320 };