/* Direct3D Viewport
 * Copyright (c) 1998 Lionel ULMER
 *
 * This file contains the implementation of Direct3DViewport2.
 *
 * 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include "config.h"
#include "windef.h"
#include "winerror.h"
#include "wine/obj_base.h"
#include "ddraw.h"
#include "d3d.h"
#include "wine/debug.h"

#include "d3d_private.h"
#include "mesa_private.h"

WINE_DEFAULT_DEBUG_CHANNEL(ddraw);

#ifdef HAVE_OPENGL

#define D3DVPRIVATE(x) mesa_d3dv_private*dvpriv=((mesa_d3dv_private*)x->private)
#define D3DLPRIVATE(x) mesa_d3dl_private*dlpriv=((mesa_d3dl_private*)x->private)

static ICOM_VTABLE(IDirect3DViewport2) viewport2_vtable;

/*******************************************************************************
 *				Viewport1/2 static functions
 */
static void activate(IDirect3DViewport2Impl* This) {
  IDirect3DLightImpl* l;

  /* Activate all the lights associated with this context */
  l = This->lights;

  while (l != NULL) {
    l->activate(l);
    l = l->next;
  }
}

/*******************************************************************************
 *				Viewport1/2 Creation functions
 */
LPDIRECT3DVIEWPORT2 d3dviewport2_create(IDirect3D2Impl* d3d2)
{
  IDirect3DViewport2Impl* vp;

  vp = HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,sizeof(IDirect3DViewport2Impl));
  vp->private = HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,sizeof(mesa_d3dv_private));
  vp->ref = 1;
  ICOM_VTBL(vp) = &viewport2_vtable;
  vp->d3d.d3d2 = d3d2;
  vp->use_d3d2 = 1;

  vp->device.active_device2 = NULL;
  vp->activate = activate;

  vp->lights = NULL;

  ((mesa_d3dv_private *) vp->private)->nextlight = GL_LIGHT0;

  return (LPDIRECT3DVIEWPORT2)vp;
}

LPDIRECT3DVIEWPORT d3dviewport_create(IDirect3DImpl* d3d1)
{
  IDirect3DViewport2Impl* vp;

  vp = HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,sizeof(IDirect3DViewport2Impl));
  vp->private = HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,sizeof(mesa_d3dv_private));
  vp->ref = 1;
  ICOM_VTBL(vp) = &viewport2_vtable;
  vp->d3d.d3d1 = d3d1;
  vp->use_d3d2 = 0;

  vp->device.active_device1 = NULL;
  vp->activate = activate;

  vp->lights = NULL;

  ((mesa_d3dv_private *) vp->private)->nextlight = GL_LIGHT0;

  return (LPDIRECT3DVIEWPORT) vp;
}

/*******************************************************************************
 *				IDirect3DViewport2 methods
 */

HRESULT WINAPI IDirect3DViewport2Impl_QueryInterface(LPDIRECT3DVIEWPORT2 iface,
							REFIID riid,
							LPVOID* ppvObj)
{
  ICOM_THIS(IDirect3DViewport2Impl,iface);

  FIXME("(%p)->(%s,%p): stub\n", This, debugstr_guid(riid),ppvObj);

  return S_OK;
}



ULONG WINAPI IDirect3DViewport2Impl_AddRef(LPDIRECT3DVIEWPORT2 iface)
{
  ICOM_THIS(IDirect3DViewport2Impl,iface);
  TRACE("(%p)->()incrementing from %lu.\n", This, This->ref );

  return ++(This->ref);
}



ULONG WINAPI IDirect3DViewport2Impl_Release(LPDIRECT3DVIEWPORT2 iface)
{
  ICOM_THIS(IDirect3DViewport2Impl,iface);
  FIXME("(%p)->() decrementing from %lu.\n", This, This->ref );

  if (!--(This->ref)) {
    HeapFree(GetProcessHeap(),0,This->private);
    HeapFree(GetProcessHeap(),0,This);
    return 0;
  }

  return This->ref;
}

/*** IDirect3DViewport methods ***/
HRESULT WINAPI IDirect3DViewport2Impl_Initialize(LPDIRECT3DVIEWPORT2 iface,
						    LPDIRECT3D d3d)
{
  ICOM_THIS(IDirect3DViewport2Impl,iface);
  FIXME("(%p)->(%p): stub\n", This, d3d);

  return DD_OK;
}

HRESULT WINAPI IDirect3DViewport2Impl_GetViewport(LPDIRECT3DVIEWPORT2 iface,
						     LPD3DVIEWPORT lpvp)
{
  ICOM_THIS(IDirect3DViewport2Impl,iface);
  FIXME("(%p)->(%p): stub\n", This, lpvp);

  if (This->use_vp2 != 0)
    return DDERR_INVALIDPARAMS;

  *lpvp = This->viewport.vp1;

  return DD_OK;
}

HRESULT WINAPI IDirect3DViewport2Impl_SetViewport(LPDIRECT3DVIEWPORT2 iface,
						     LPD3DVIEWPORT lpvp)
{
  ICOM_THIS(IDirect3DViewport2Impl,iface);
  FIXME("(%p)->(%p): stub\n", This, lpvp);

  This->use_vp2 = 0;
  This->viewport.vp1 = *lpvp;

  TRACE("dwSize = %ld   dwX = %ld   dwY = %ld\n",
	lpvp->dwSize, lpvp->dwX, lpvp->dwY);
  TRACE("dwWidth = %ld   dwHeight = %ld\n",
	lpvp->dwWidth, lpvp->dwHeight);
  TRACE("dvScaleX = %f   dvScaleY = %f\n",
	lpvp->dvScaleX, lpvp->dvScaleY);
  TRACE("dvMaxX = %f   dvMaxY = %f\n",
	lpvp->dvMaxX, lpvp->dvMaxY);
  TRACE("dvMinZ = %f   dvMaxZ = %f\n",
	lpvp->dvMinZ, lpvp->dvMaxZ);


  return DD_OK;
}

HRESULT WINAPI IDirect3DViewport2Impl_TransformVertices(LPDIRECT3DVIEWPORT2 iface,
							   DWORD dwVertexCount,
							   LPD3DTRANSFORMDATA lpData,
							   DWORD dwFlags,
							   LPDWORD lpOffScreen)
{
  ICOM_THIS(IDirect3DViewport2Impl,iface);
  FIXME("(%p)->(%8ld,%p,%08lx,%p): stub\n",
	This, dwVertexCount, lpData, dwFlags, lpOffScreen);

  return DD_OK;
}

HRESULT WINAPI IDirect3DViewport2Impl_LightElements(LPDIRECT3DVIEWPORT2 iface,
						       DWORD dwElementCount,
						       LPD3DLIGHTDATA lpData)
{
  ICOM_THIS(IDirect3DViewport2Impl,iface);
  FIXME("(%p)->(%8ld,%p): stub\n", This, dwElementCount, lpData);

  return DD_OK;
}

HRESULT WINAPI IDirect3DViewport2Impl_SetBackground(LPDIRECT3DVIEWPORT2 iface,
						       D3DMATERIALHANDLE hMat)
{
  ICOM_THIS(IDirect3DViewport2Impl,iface);
  FIXME("(%p)->(%08lx): stub\n", This, (DWORD) hMat);

  return DD_OK;
}

HRESULT WINAPI IDirect3DViewport2Impl_GetBackground(LPDIRECT3DVIEWPORT2 iface,
						       LPD3DMATERIALHANDLE lphMat,
						       LPBOOL lpValid)
{
  ICOM_THIS(IDirect3DViewport2Impl,iface);
  FIXME("(%p)->(%p,%p): stub\n", This, lphMat, lpValid);

  return DD_OK;
}

HRESULT WINAPI IDirect3DViewport2Impl_SetBackgroundDepth(LPDIRECT3DVIEWPORT2 iface,
							    LPDIRECTDRAWSURFACE lpDDSurface)
{
  ICOM_THIS(IDirect3DViewport2Impl,iface);
  FIXME("(%p)->(%p): stub\n", This, lpDDSurface);

  return DD_OK;
}

HRESULT WINAPI IDirect3DViewport2Impl_GetBackgroundDepth(LPDIRECT3DVIEWPORT2 iface,
							    LPDIRECTDRAWSURFACE* lplpDDSurface,
							    LPBOOL lpValid)
{
  ICOM_THIS(IDirect3DViewport2Impl,iface);
  FIXME("(%p)->(%p,%p): stub\n", This, lplpDDSurface, lpValid);

  return DD_OK;
}

HRESULT WINAPI IDirect3DViewport2Impl_Clear(LPDIRECT3DVIEWPORT2 iface,
					       DWORD dwCount,
					       LPD3DRECT lpRects,
					       DWORD dwFlags)
{
  ICOM_THIS(IDirect3DViewport2Impl,iface);
  GLboolean ztest;
  FIXME("(%p)->(%8ld,%p,%08lx): stub\n", This, dwCount, lpRects, dwFlags);

  /* For the moment, ignore the rectangles */
  if (This->device.active_device1 != NULL) {
    /* Get the rendering context */
    if (This->use_d3d2)
      This->device.active_device2->set_context(This->device.active_device2);
    else
      This->device.active_device1->set_context(This->device.active_device1);
  }

    /* Clears the screen */
    ENTER_GL();
    glGetBooleanv(GL_DEPTH_TEST, &ztest);
    glDepthMask(GL_TRUE); /* Enables Z writing to be sure to delete also the Z buffer */
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    glDepthMask(ztest);
    LEAVE_GL();

  return DD_OK;
}

HRESULT WINAPI IDirect3DViewport2Impl_AddLight(LPDIRECT3DVIEWPORT2 iface,
						  LPDIRECT3DLIGHT lpLight)
{
  ICOM_THIS(IDirect3DViewport2Impl,iface);
  IDirect3DLightImpl* ilpLight=(IDirect3DLightImpl*)lpLight;
  FIXME("(%p)->(%p): stub\n", This, ilpLight);

  /* Add the light in the 'linked' chain */
  ilpLight->next = This->lights;
  This->lights = ilpLight;

  /* If active, activate the light */
  if (This->device.active_device1 != NULL) {
    D3DVPRIVATE(This);
    D3DLPRIVATE(ilpLight);

    /* Get the rendering context */
    if (This->use_d3d2)
      This->device.active_device2->set_context(This->device.active_device2);
    else
      This->device.active_device1->set_context(This->device.active_device1);

    /* Activate the light */
    dlpriv->light_num = dvpriv->nextlight++;
    ilpLight->activate(ilpLight);
  }

  return DD_OK;
}

HRESULT WINAPI IDirect3DViewport2Impl_DeleteLight(LPDIRECT3DVIEWPORT2 iface,
						     LPDIRECT3DLIGHT lpLight)
{
  ICOM_THIS(IDirect3DViewport2Impl,iface);
  IDirect3DLightImpl** currentlplpLight;
  TRACE("(%p)->(%p): stub\n", This, lpLight);

  currentlplpLight = &(This->lights);
  while(*currentlplpLight) {
    if (*currentlplpLight == (IDirect3DLightImpl*)lpLight) {
      *currentlplpLight = (*currentlplpLight)->next;
      return DD_OK;
    }
    currentlplpLight = &((*currentlplpLight)->next);
  }

  return DDERR_INVALIDOBJECT;
}

HRESULT WINAPI IDirect3DViewport2Impl_NextLight(LPDIRECT3DVIEWPORT2 iface,
						   LPDIRECT3DLIGHT lpLight,
						   LPDIRECT3DLIGHT* lplpLight,
						   DWORD dwFlags)
{
  ICOM_THIS(IDirect3DViewport2Impl,iface);
  FIXME("(%p)->(%p,%p,%08lx): stub\n", This, lpLight, lplpLight, dwFlags);

  return DD_OK;
}

/*** IDirect3DViewport2 methods ***/
HRESULT WINAPI IDirect3DViewport2Impl_GetViewport2(LPDIRECT3DVIEWPORT2 iface,
						      LPD3DVIEWPORT2 lpViewport2)
{
  ICOM_THIS(IDirect3DViewport2Impl,iface);
  TRACE("(%p)->(%p)\n", This, lpViewport2);

  if (This->use_vp2 != 1)
    return DDERR_INVALIDPARAMS;

  *lpViewport2 = This->viewport.vp2;

  return DD_OK;
}

HRESULT WINAPI IDirect3DViewport2Impl_SetViewport2(LPDIRECT3DVIEWPORT2 iface,
						      LPD3DVIEWPORT2 lpViewport2)
{
  ICOM_THIS(IDirect3DViewport2Impl,iface);
  TRACE("(%p)->(%p)\n", This, lpViewport2);

  TRACE("dwSize = %ld   dwX = %ld   dwY = %ld\n",
	lpViewport2->dwSize, lpViewport2->dwX, lpViewport2->dwY);
  TRACE("dwWidth = %ld   dwHeight = %ld\n",
	lpViewport2->dwWidth, lpViewport2->dwHeight);
  TRACE("dvClipX = %f   dvClipY = %f\n",
	lpViewport2->dvClipX, lpViewport2->dvClipY);
  TRACE("dvClipWidth = %f   dvClipHeight = %f\n",
	lpViewport2->dvClipWidth, lpViewport2->dvClipHeight);
  TRACE("dvMinZ = %f   dvMaxZ = %f\n",
	lpViewport2->dvMinZ, lpViewport2->dvMaxZ);

  This->viewport.vp2 = *lpViewport2;
  This->use_vp2 = 1;

  return DD_OK;
}


/*******************************************************************************
 *				IDirect3DViewport1/2 VTable
 */
static ICOM_VTABLE(IDirect3DViewport2) viewport2_vtable =
{
  ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
  /*** IUnknown methods ***/
  IDirect3DViewport2Impl_QueryInterface,
  IDirect3DViewport2Impl_AddRef,
  IDirect3DViewport2Impl_Release,
  /*** IDirect3DViewport methods ***/
  IDirect3DViewport2Impl_Initialize,
  IDirect3DViewport2Impl_GetViewport,
  IDirect3DViewport2Impl_SetViewport,
  IDirect3DViewport2Impl_TransformVertices,
  IDirect3DViewport2Impl_LightElements,
  IDirect3DViewport2Impl_SetBackground,
  IDirect3DViewport2Impl_GetBackground,
  IDirect3DViewport2Impl_SetBackgroundDepth,
  IDirect3DViewport2Impl_GetBackgroundDepth,
  IDirect3DViewport2Impl_Clear,
  IDirect3DViewport2Impl_AddLight,
  IDirect3DViewport2Impl_DeleteLight,
  IDirect3DViewport2Impl_NextLight,
  /*** IDirect3DViewport2 methods ***/
  IDirect3DViewport2Impl_GetViewport2,
  IDirect3DViewport2Impl_SetViewport2
};

#else /* HAVE_OPENGL */

LPDIRECT3DVIEWPORT d3dviewport_create(IDirect3DImpl* d3d1) {
  ERR("Should not be called...\n");
  return NULL;
}

LPDIRECT3DVIEWPORT2 d3dviewport2_create(IDirect3D2Impl* d3d2) {
  ERR("Should not be called...\n");
  return NULL;
}

#endif /* HAVE_OPENGL */