/* Direct3D Texture
 * Copyright (c) 1998 Lionel ULMER
 *
 * This file contains the implementation of interface Direct3DTexture2.
 *
 * 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 <string.h>

#define NONAMELESSUNION
#define NONAMELESSSTRUCT
#include "windef.h"
#include "winerror.h"
#include "objbase.h"
#include "ddraw.h"
#include "d3d.h"
#include "wine/debug.h"

#include "mesa_private.h"

WINE_DEFAULT_DEBUG_CHANNEL(ddraw);

/* Define this if you want to save to a file all the textures used by a game
   (can be funny to see how they managed to cram all the pictures in
   texture memory) */
#undef TEXTURE_SNOOP

#ifdef TEXTURE_SNOOP
#include <stdio.h>

static void 
snoop_texture(IDirectDrawSurfaceImpl *This) {
    IDirect3DTextureGLImpl *glThis = (IDirect3DTextureGLImpl *) This->tex_private;
    char buf[128];
    FILE *f;
    
    sprintf(buf, "tex_%05d.pnm", glThis->tex_name);
    f = fopen(buf, "wb");
    DDRAW_dump_surface_to_disk(This, f);
}

#else

#define snoop_texture(a)

#endif

/*******************************************************************************
 *			   IDirectSurface callback methods
 */
HRESULT
gltex_upload_texture(IDirectDrawSurfaceImpl *This) {
    IDirect3DTextureGLImpl *glThis = (IDirect3DTextureGLImpl *) This->tex_private;
#if 0
    static BOOL color_table_queried = FALSE;
#endif
    void (*ptr_ColorTableEXT) (GLenum target, GLenum internalformat,
			       GLsizei width, GLenum format, GLenum type, const GLvoid *table) = NULL;
    BOOL upload_done = FALSE;
    BOOL error = FALSE;
    GLenum format = GL_RGBA, pixel_format = GL_UNSIGNED_BYTE; /* This is only to prevent warnings.. */
    VOID *surface = NULL;

    DDSURFACEDESC *src_d = (DDSURFACEDESC *)&(This->surface_desc);

    glBindTexture(GL_TEXTURE_2D, glThis->tex_name);

    if (glThis->dirty_flag == FALSE) {
        TRACE(" activating OpenGL texture id %d.\n", glThis->tex_name);
	return DD_OK;
    } else {
        TRACE(" activating and uploading texture id %d (initial done = %d).\n", glThis->tex_name, glThis->initial_upload_done);
    }

    /* Texture snooping for the curious :-) */
    snoop_texture(This);
    
    if (src_d->ddpfPixelFormat.dwFlags & DDPF_PALETTEINDEXED8) {
	  /* ****************
	     Paletted Texture
	     **************** */
        IDirectDrawPaletteImpl* pal = This->palette;
	BYTE table[256][4];
	int i;

#if 0
	if (color_table_queried == FALSE) {
	    ptr_ColorTableEXT =
	        ((Mesa_DeviceCapabilities *) ((x11_dd_private *) This->surface->s.ddraw->d->private)->device_capabilities)->ptr_ColorTableEXT;
	}
#endif
	
	if (pal == NULL) {
	    /* Upload a black texture. The real one will be uploaded on palette change */
	    WARN("Palettized texture Loading with a NULL palette !\n");
	    memset(table, 0, 256 * 4);
	} else {
	    /* Get the surface's palette */
	    for (i = 0; i < 256; i++) {
	        table[i][0] = pal->palents[i].peRed;
		table[i][1] = pal->palents[i].peGreen;
		table[i][2] = pal->palents[i].peBlue;
		if ((src_d->dwFlags & DDSD_CKSRCBLT) &&
		    (i >= src_d->ddckCKSrcBlt.dwColorSpaceLowValue) &&
		    (i <= src_d->ddckCKSrcBlt.dwColorSpaceHighValue))
		    /* We should maybe here put a more 'neutral' color than the standard bright purple
		       one often used by application to prevent the nice purple borders when bi-linear
		       filtering is on */
		    table[i][3] = 0x00;
		else
		    table[i][3] = 0xFF;
	    }
	}

	if (ptr_ColorTableEXT != NULL) {
	    /* use Paletted Texture Extension */
	    ptr_ColorTableEXT(GL_TEXTURE_2D,    /* target */
			      GL_RGBA,          /* internal format */
			      256,              /* table size */
			      GL_RGBA,          /* table format */
			      GL_UNSIGNED_BYTE, /* table type */
			      table);           /* the color table */
	    
	    glTexImage2D(GL_TEXTURE_2D,       /* target */
			 This->mipmap_level,                   /* level */
			 GL_COLOR_INDEX8_EXT, /* internal format */
			 src_d->dwWidth, src_d->dwHeight, /* width, height */
			 0,                   /* border */
			 GL_COLOR_INDEX,      /* texture format */
			 GL_UNSIGNED_BYTE,    /* texture type */
			 src_d->lpSurface); /* the texture */

	    upload_done = TRUE;
	} else {
	    DWORD i;
	    BYTE *src = (BYTE *) src_d->lpSurface, *dst;

	    surface = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, src_d->dwWidth * src_d->dwHeight * sizeof(DWORD));
	    dst = (BYTE *) surface;
	    
	    for (i = 0; i < src_d->dwHeight * src_d->dwWidth; i++) {
	        BYTE color = *src++;
		*dst++ = table[color][0];
		*dst++ = table[color][1];
		*dst++ = table[color][2];
		*dst++ = table[color][3];
	    }
	    
	    format = GL_RGBA;
	    pixel_format = GL_UNSIGNED_BYTE;
	}
    } else if (src_d->ddpfPixelFormat.dwFlags & DDPF_RGB) {
	    /* ************
	       RGB Textures
	       ************ */
        if (src_d->ddpfPixelFormat.u1.dwRGBBitCount == 8) {
	    if ((src_d->ddpfPixelFormat.u2.dwRBitMask == 0xE0) &&
		(src_d->ddpfPixelFormat.u3.dwGBitMask == 0x1C) &&
		(src_d->ddpfPixelFormat.u4.dwBBitMask == 0x03)) {
	        /* **********************
		   GL_UNSIGNED_BYTE_3_3_2
		   ********************** */
	        if (src_d->dwFlags & DDSD_CKSRCBLT) {
		    /* This texture format will never be used.. So do not care about color keying
		       up until the point in time it will be needed :-) */
		    error = TRUE;
		} else {
		    format = GL_RGB;
		    pixel_format = GL_UNSIGNED_BYTE_3_3_2;
		}
	    } else {
	        error = TRUE;
	    }
	} else if (src_d->ddpfPixelFormat.u1.dwRGBBitCount == 16) {
	    if ((src_d->ddpfPixelFormat.u2.dwRBitMask ==        0xF800) &&
		(src_d->ddpfPixelFormat.u3.dwGBitMask ==        0x07E0) &&
		(src_d->ddpfPixelFormat.u4.dwBBitMask ==        0x001F) &&
		(src_d->ddpfPixelFormat.u5.dwRGBAlphaBitMask == 0x0000)) {
	        if (src_d->dwFlags & DDSD_CKSRCBLT) {
		    /* Converting the 565 format in 5551 packed to emulate color-keying.

		       Note : in all these conversion, it would be best to average the averaging
		              pixels to get the color of the pixel that will be color-keyed to
			      prevent 'color bleeding'. This will be done later on if ever it is
			      too visible.

		       Note2: when using color-keying + alpha, are the alpha bits part of the
		              color-space or not ?
		    */
		    DWORD i;
		    WORD *src = (WORD *) src_d->lpSurface, *dst;
		    
		    surface = (WORD *) HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, src_d->dwWidth * src_d->dwHeight * sizeof(WORD));
		    dst = (WORD *) surface;
		    for (i = 0; i < src_d->dwHeight * src_d->dwWidth; i++) {
		        WORD color = *src++;
			*dst = ((color & 0xFFC0) | ((color & 0x1F) << 1));
			if ((color < src_d->ddckCKSrcBlt.dwColorSpaceLowValue) ||
			    (color > src_d->ddckCKSrcBlt.dwColorSpaceHighValue))
			    *dst |= 0x0001;
			dst++;
		    }
		
		    format = GL_RGBA;
		    pixel_format = GL_UNSIGNED_SHORT_5_5_5_1;
		} else {
		    format = GL_RGB;
		    pixel_format = GL_UNSIGNED_SHORT_5_6_5;
		}
	    } else if ((src_d->ddpfPixelFormat.u2.dwRBitMask ==        0xF800) &&
		       (src_d->ddpfPixelFormat.u3.dwGBitMask ==        0x07C0) &&
		       (src_d->ddpfPixelFormat.u4.dwBBitMask ==        0x003E) &&
		       (src_d->ddpfPixelFormat.u5.dwRGBAlphaBitMask == 0x0001)) {
		format = GL_RGBA;
		pixel_format = GL_UNSIGNED_SHORT_5_5_5_1;	        
	        if (src_d->dwFlags & DDSD_CKSRCBLT) {
		    /* Change the alpha value of the color-keyed pixels to emulate color-keying. */
		    DWORD i;
		    WORD *src = (WORD *) src_d->lpSurface, *dst;
		    
		    surface = (WORD *) HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, src_d->dwWidth * src_d->dwHeight * sizeof(WORD));
		    dst = (WORD *) surface;
		    for (i = 0; i < src_d->dwHeight * src_d->dwWidth; i++) {
		        WORD color = *src++;
			*dst = color & 0xFFFE;
			if ((color < src_d->ddckCKSrcBlt.dwColorSpaceLowValue) ||
			    (color > src_d->ddckCKSrcBlt.dwColorSpaceHighValue))
			    *dst |= color & 0x0001;
			dst++;
		    }
		}
	    } else if ((src_d->ddpfPixelFormat.u2.dwRBitMask ==        0xF000) &&
		       (src_d->ddpfPixelFormat.u3.dwGBitMask ==        0x0F00) &&
		       (src_d->ddpfPixelFormat.u4.dwBBitMask ==        0x00F0) &&
		       (src_d->ddpfPixelFormat.u5.dwRGBAlphaBitMask == 0x000F)) {
	        format = GL_RGBA;
		pixel_format = GL_UNSIGNED_SHORT_4_4_4_4;	      
	        if (src_d->dwFlags & DDSD_CKSRCBLT) {
		    /* Change the alpha value of the color-keyed pixels to emulate color-keying. */
		    DWORD i;
		    WORD *src = (WORD *) src_d->lpSurface, *dst;
		    
		    surface = (WORD *) HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, src_d->dwWidth * src_d->dwHeight * sizeof(WORD));
		    dst = (WORD *) surface;
		    for (i = 0; i < src_d->dwHeight * src_d->dwWidth; i++) {
		        WORD color = *src++;
			*dst = color & 0xFFF0;
			if ((color < src_d->ddckCKSrcBlt.dwColorSpaceLowValue) ||
			    (color > src_d->ddckCKSrcBlt.dwColorSpaceHighValue))
			    *dst |= color & 0x000F;
			dst++;
		    }
		}
	    } else if ((src_d->ddpfPixelFormat.u2.dwRBitMask ==        0x0F00) &&
		       (src_d->ddpfPixelFormat.u3.dwGBitMask ==        0x00F0) &&
		       (src_d->ddpfPixelFormat.u4.dwBBitMask ==        0x000F) &&
		       (src_d->ddpfPixelFormat.u5.dwRGBAlphaBitMask == 0xF000)) {
	        /* Move the four Alpha bits... */
		DWORD i;
		WORD *src = (WORD *) src_d->lpSurface, *dst;
		
		surface = (WORD *) HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, src_d->dwWidth * src_d->dwHeight * sizeof(WORD));
		dst = surface;
		
		if (src_d->dwFlags & DDSD_CKSRCBLT) {
		    for (i = 0; i < src_d->dwHeight * src_d->dwWidth; i++) {
		        WORD color = *src++;
			*dst = (color & 0x0FFF) << 4;
			if ((color < src_d->ddckCKSrcBlt.dwColorSpaceLowValue) ||
			    (color > src_d->ddckCKSrcBlt.dwColorSpaceHighValue))
			    *dst |= (color & 0xF000) >> 12;
			dst++;
		    }
		} else {
		    for (i = 0; i < src_d->dwHeight * src_d->dwWidth; i++) {
		        WORD color = *src++;
			*dst++ = (((color & 0x0FFF) << 4) |
				  ((color & 0xF000) >> 12));
		    }
		}

	        format = GL_RGBA;
		pixel_format = GL_UNSIGNED_SHORT_4_4_4_4; 		
	    } else if ((src_d->ddpfPixelFormat.u2.dwRBitMask ==        0x7C00) &&
		       (src_d->ddpfPixelFormat.u3.dwGBitMask ==        0x03E0) &&
		       (src_d->ddpfPixelFormat.u4.dwBBitMask ==        0x001F) &&
		       (src_d->ddpfPixelFormat.u5.dwRGBAlphaBitMask == 0x8000)) {
	        /* Converting the 1555 format in 5551 packed */
		DWORD i;
		WORD *src = (WORD *) src_d->lpSurface, *dst;
		
		surface = (WORD *) HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, src_d->dwWidth * src_d->dwHeight * sizeof(WORD));
		dst = (WORD *) surface;
		
		if (src_d->dwFlags & DDSD_CKSRCBLT) {
		    for (i = 0; i < src_d->dwHeight * src_d->dwWidth; i++) {
		        WORD color = *src++;
			*dst = (color & 0x7FFF) << 1;
			if ((color < src_d->ddckCKSrcBlt.dwColorSpaceLowValue) ||
			    (color > src_d->ddckCKSrcBlt.dwColorSpaceHighValue))
			    *dst |= (color & 0x8000) >> 15;
			dst++;
		    }
		} else {
		    for (i = 0; i < src_d->dwHeight * src_d->dwWidth; i++) {
		        WORD color = *src++;
			*dst++ = (((color & 0x7FFF) << 1) |
				  ((color & 0x8000) >> 15));
		    }		  
		}
		
	        format = GL_RGBA;
		pixel_format = GL_UNSIGNED_SHORT_5_5_5_1;
	    } else {
		error = TRUE;
	    }
	} else if (src_d->ddpfPixelFormat.u1.dwRGBBitCount == 24) {
	    if ((src_d->ddpfPixelFormat.u2.dwRBitMask ==        0x00FF0000) &&
		(src_d->ddpfPixelFormat.u3.dwGBitMask ==        0x0000FF00) &&
		(src_d->ddpfPixelFormat.u4.dwBBitMask ==        0x000000FF) &&
		(src_d->ddpfPixelFormat.u5.dwRGBAlphaBitMask == 0x00000000)) {
	        if (src_d->dwFlags & DDSD_CKSRCBLT) {
		    /* This is a pain :-) */
		    DWORD i;
		    BYTE *src = (BYTE *) src_d->lpSurface;
		    DWORD *dst;
		    
		    surface = (DWORD *) HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, src_d->dwWidth * src_d->dwHeight * sizeof(DWORD));
		    dst = (DWORD *) surface;
		    for (i = 0; i < src_d->dwHeight * src_d->dwWidth; i++) {
		        DWORD color = *((DWORD *) src) & 0x00FFFFFF;
			src += 3;
		        *dst = *src++ << 8;
			if ((color < src_d->ddckCKSrcBlt.dwColorSpaceLowValue) ||
			    (color > src_d->ddckCKSrcBlt.dwColorSpaceHighValue))
			    *dst |= 0xFF;
			dst++;
		    }
		    format = GL_RGBA;
		    pixel_format = GL_UNSIGNED_INT_8_8_8_8;
		} else {
		  format = GL_BGR;
		  pixel_format = GL_UNSIGNED_BYTE;
		}
	    } else {
	        error = TRUE;
	    }
	} else if (src_d->ddpfPixelFormat.u1.dwRGBBitCount == 32) {
	    if ((src_d->ddpfPixelFormat.u2.dwRBitMask ==        0xFF000000) &&
		(src_d->ddpfPixelFormat.u3.dwGBitMask ==        0x00FF0000) &&
		(src_d->ddpfPixelFormat.u4.dwBBitMask ==        0x0000FF00) &&
		(src_d->ddpfPixelFormat.u5.dwRGBAlphaBitMask == 0x000000FF)) {
	        if (src_d->dwFlags & DDSD_CKSRCBLT) {
		    /* Just use the alpha component to handle color-keying... */
		    DWORD i;
		    DWORD *src = (DWORD *) src_d->lpSurface, *dst;
		
		    surface = (DWORD *) HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, src_d->dwWidth * src_d->dwHeight * sizeof(DWORD));
		    dst = (DWORD *) surface;
		    for (i = 0; i < src_d->dwHeight * src_d->dwWidth; i++) {
		        DWORD color = *src++;
		        *dst = color & 0xFFFFFF00;
			if ((color < src_d->ddckCKSrcBlt.dwColorSpaceLowValue) ||
			    (color > src_d->ddckCKSrcBlt.dwColorSpaceHighValue))
			    *dst |= color & 0x000000FF;
			dst++;
		    }
		}
	        format = GL_RGBA;
		pixel_format = GL_UNSIGNED_INT_8_8_8_8;
	    } else if ((src_d->ddpfPixelFormat.u2.dwRBitMask ==        0x00FF0000) &&
		       (src_d->ddpfPixelFormat.u3.dwGBitMask ==        0x0000FF00) &&
		       (src_d->ddpfPixelFormat.u4.dwBBitMask ==        0x000000FF) &&
		       (src_d->ddpfPixelFormat.u5.dwRGBAlphaBitMask == 0x00000000)) {
	        /* Just add an alpha component and handle color-keying... */
	        DWORD i;
		DWORD *src = (DWORD *) src_d->lpSurface, *dst;
		
		surface = (DWORD *) HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, src_d->dwWidth * src_d->dwHeight * sizeof(DWORD));
		dst = (DWORD *) surface;
		
	        if (src_d->dwFlags & DDSD_CKSRCBLT) {
		    for (i = 0; i < src_d->dwHeight * src_d->dwWidth; i++) {
		        DWORD color = *src++;
		        *dst = color << 8;
			if ((color < src_d->ddckCKSrcBlt.dwColorSpaceLowValue) ||
			    (color > src_d->ddckCKSrcBlt.dwColorSpaceHighValue))
			    *dst |= 0xFF;
			dst++;
		    }
		} else {
		    for (i = 0; i < src_d->dwHeight * src_d->dwWidth; i++) {
		        *dst++ = (*src++ << 8) | 0xFF;
		    }
		}
	        format = GL_RGBA;
		pixel_format = GL_UNSIGNED_INT_8_8_8_8;
	    } else {
		error = TRUE;
	    }
	} else {
	    error = TRUE;
	}
    } else {
	error = TRUE;
    } 

    if ((upload_done == FALSE) && (error == FALSE)) {
        if (glThis->initial_upload_done == FALSE) {
	    glTexImage2D(GL_TEXTURE_2D,
			 This->mipmap_level,
			 format,
			 src_d->dwWidth, src_d->dwHeight,
			 0,
			 format,
			 pixel_format,
			 surface == NULL ? src_d->lpSurface : surface);
	    glThis->initial_upload_done = TRUE;
	} else {
	    glTexSubImage2D(GL_TEXTURE_2D,
			    This->mipmap_level,
			    0, 0,
			    src_d->dwWidth, src_d->dwHeight,
			    format,
			    pixel_format,
			    surface == NULL ? src_d->lpSurface : surface);
	}
	
	if (surface) HeapFree(GetProcessHeap(), 0, surface);
    } else if (error == TRUE) {
	if (ERR_ON(ddraw)) {
	    ERR("Unsupported pixel format for textures : \n");
	    DDRAW_dump_pixelformat(&src_d->ddpfPixelFormat);
	}
    }

    glThis->dirty_flag = FALSE;

    return DD_OK;
}

HRESULT WINAPI
Main_IDirect3DTextureImpl_1_Initialize(LPDIRECT3DTEXTURE iface,
                                       LPDIRECT3DDEVICE lpDirect3DDevice,
                                       LPDIRECTDRAWSURFACE lpDDSurface)
{
    ICOM_THIS_FROM(IDirectDrawSurfaceImpl, IDirect3DTexture, iface);
    FIXME("(%p/%p)->(%p,%p) no-op...\n", This, iface, lpDirect3DDevice, lpDDSurface);
    return DD_OK;
}

static HRESULT
gltex_setcolorkey_cb(IDirectDrawSurfaceImpl *This, DWORD dwFlags, LPDDCOLORKEY ckey )
{
    IDirect3DTextureGLImpl *glThis = (IDirect3DTextureGLImpl *) This->tex_private;

    glThis->dirty_flag = TRUE;

    return DD_OK;
}

HRESULT WINAPI
Main_IDirect3DTextureImpl_2_1T_PaletteChanged(LPDIRECT3DTEXTURE2 iface,
                                              DWORD dwStart,
                                              DWORD dwCount)
{
    ICOM_THIS_FROM(IDirectDrawSurfaceImpl, IDirect3DTexture2, iface);
    FIXME("(%p/%p)->(%08lx,%08lx): stub!\n", This, iface, dwStart, dwCount);
    return DD_OK;
}

HRESULT WINAPI
Main_IDirect3DTextureImpl_1_Unload(LPDIRECT3DTEXTURE iface)
{
    ICOM_THIS_FROM(IDirectDrawSurfaceImpl, IDirect3DTexture, iface);
    FIXME("(%p/%p)->(): stub!\n", This, iface);
    return DD_OK;
}

HRESULT WINAPI
Main_IDirect3DTextureImpl_2_1T_GetHandle(LPDIRECT3DTEXTURE2 iface,
					 LPDIRECT3DDEVICE2 lpDirect3DDevice2,
					 LPD3DTEXTUREHANDLE lpHandle)
{
    ICOM_THIS_FROM(IDirectDrawSurfaceImpl, IDirect3DTexture2, iface);
    IDirect3DDeviceImpl *lpDeviceImpl = ICOM_OBJECT(IDirect3DDeviceImpl, IDirect3DDevice2, lpDirect3DDevice2);
    
    TRACE("(%p/%p)->(%p,%p)\n", This, iface, lpDirect3DDevice2, lpHandle);

    /* The handle is simply the pointer to the implementation structure */
    *lpHandle = (D3DTEXTUREHANDLE) This;

    TRACE(" returning handle %08lx.\n", *lpHandle);
    
    /* Now set the device for this texture */
    This->d3ddevice = lpDeviceImpl;

    return D3D_OK;
}

HRESULT WINAPI
Main_IDirect3DTextureImpl_2_1T_Load(LPDIRECT3DTEXTURE2 iface,
				    LPDIRECT3DTEXTURE2 lpD3DTexture2)
{
    ICOM_THIS_FROM(IDirectDrawSurfaceImpl, IDirect3DTexture2, iface);
    FIXME("(%p/%p)->(%p): stub!\n", This, iface, lpD3DTexture2);
    return DD_OK;
}

static void gltex_set_palette(IDirectDrawSurfaceImpl* This, IDirectDrawPaletteImpl* pal)
{
    IDirect3DTextureGLImpl *glThis = (IDirect3DTextureGLImpl *) This->tex_private;
    
    /* First call the previous set_palette function */
    glThis->set_palette(This, pal);
    
    /* And set the dirty flag */
    glThis->dirty_flag = TRUE;
}

static void
gltex_final_release(IDirectDrawSurfaceImpl *This)
{
    IDirect3DTextureGLImpl *glThis = (IDirect3DTextureGLImpl *) This->tex_private;
    DWORD mem_used;
    int i;

    TRACE(" deleting texture with GL id %d.\n", glThis->tex_name);

    /* And delete texture handle */
    ENTER_GL();
    if (glThis->tex_name != 0)
        glDeleteTextures(1, &(glThis->tex_name));
    LEAVE_GL();	

    /* And if this texture was the current one, remove it at the device level */
    if (This->d3ddevice != NULL)
        for (i = 0; i < MAX_TEXTURES; i++)
	    if (This->d3ddevice->current_texture[i] == This)
	        This->d3ddevice->current_texture[i] = NULL;

    /* All this should be part of main surface management not just a hack for texture.. */
    if (glThis->loaded) {
        mem_used = This->surface_desc.dwHeight *
	           This->surface_desc.u1.lPitch;
	This->ddraw_owner->free_memory(This->ddraw_owner, mem_used);
    }

    glThis->final_release(This);
}

static void
gltex_lock_update(IDirectDrawSurfaceImpl* This, LPCRECT pRect, DWORD dwFlags)
{
    IDirect3DTextureGLImpl *glThis = (IDirect3DTextureGLImpl *) This->tex_private;
    
    glThis->lock_update(This, pRect, dwFlags);
}

static void
gltex_unlock_update(IDirectDrawSurfaceImpl* This, LPCRECT pRect)
{
    IDirect3DTextureGLImpl *glThis = (IDirect3DTextureGLImpl *) This->tex_private;

    glThis->unlock_update(This, pRect);
    
    /* Set the dirty flag according to the lock type */
    if ((This->lastlocktype & DDLOCK_READONLY) == 0)
        glThis->dirty_flag = TRUE;
}

HRESULT WINAPI
GL_IDirect3DTextureImpl_2_1T_Load(LPDIRECT3DTEXTURE2 iface,
				  LPDIRECT3DTEXTURE2 lpD3DTexture2)
{
    ICOM_THIS_FROM(IDirectDrawSurfaceImpl, IDirect3DTexture2, iface);
    IDirect3DTextureGLImpl *glThis = (IDirect3DTextureGLImpl *) This->tex_private;
    IDirectDrawSurfaceImpl *lpD3DTextureImpl = ICOM_OBJECT(IDirectDrawSurfaceImpl, IDirect3DTexture2, lpD3DTexture2);
    DWORD mem_used;
    DDSURFACEDESC *src_d, *dst_d;
    HRESULT ret_value = D3D_OK;
    
    TRACE("(%p/%p)->(%p)\n", This, iface, lpD3DTexture2);

    if (glThis != NULL) {
        if (glThis->loaded == FALSE) {
	    /* Only check memory for not already loaded texture... */
	    mem_used = This->surface_desc.dwHeight *
	               This->surface_desc.u1.lPitch;
	    if (This->ddraw_owner->allocate_memory(This->ddraw_owner, mem_used) < 0) {
	        TRACE(" out of virtual memory... Warning application.\n");
		return D3DERR_TEXTURE_LOAD_FAILED;
	    }
	}
	glThis->loaded = TRUE;
    }
    
    TRACE("Copied surface %p to surface %p\n", lpD3DTextureImpl, This);

    if ( This->surface_desc.ddsCaps.dwCaps & DDSCAPS_ALLOCONLOAD )
        /* If the surface is not allocated and its location is not yet specified,
	   force it to video memory */ 
        if ( !(This->surface_desc.ddsCaps.dwCaps & (DDSCAPS_SYSTEMMEMORY|DDSCAPS_VIDEOMEMORY)) )
	    This->surface_desc.ddsCaps.dwCaps |= DDSCAPS_VIDEOMEMORY;

    /* Suppress the ALLOCONLOAD flag */
    This->surface_desc.ddsCaps.dwCaps &= ~DDSCAPS_ALLOCONLOAD;
    
    /* After seeing some logs, not sure at all about this... */
    if (This->palette == NULL) {
        This->palette = lpD3DTextureImpl->palette;
	if (lpD3DTextureImpl->palette != NULL) IDirectDrawPalette_AddRef(ICOM_INTERFACE(lpD3DTextureImpl->palette,
											IDirectDrawPalette));
    } else {
        if (lpD3DTextureImpl->palette != NULL) {
	    PALETTEENTRY palent[256];
	    IDirectDrawPalette *pal_int = ICOM_INTERFACE(lpD3DTextureImpl->palette, IDirectDrawPalette);
	    IDirectDrawPalette_GetEntries(pal_int, 0, 0, 256, palent);
	    IDirectDrawPalette_SetEntries(ICOM_INTERFACE(This->palette, IDirectDrawPalette),
					  0, 0, 256, palent);
	}
    }
    
    /* Copy one surface on the other */
    dst_d = (DDSURFACEDESC *)&(This->surface_desc);
    src_d = (DDSURFACEDESC *)&(lpD3DTextureImpl->surface_desc);

    if ((src_d->dwWidth != dst_d->dwWidth) || (src_d->dwHeight != dst_d->dwHeight)) {
        /* Should also check for same pixel format, u1.lPitch, ... */
        ERR("Error in surface sizes\n");
	return D3DERR_TEXTURE_LOAD_FAILED;
    } else {
        /* LPDIRECT3DDEVICE2 d3dd = (LPDIRECT3DDEVICE2) This->D3Ddevice; */
        /* I should put a macro for the calculus of bpp */

        /* Copy also the ColorKeying stuff */
        if (src_d->dwFlags & DDSD_CKSRCBLT) {
	    dst_d->dwFlags |= DDSD_CKSRCBLT;
	    dst_d->ddckCKSrcBlt.dwColorSpaceLowValue = src_d->ddckCKSrcBlt.dwColorSpaceLowValue;
	    dst_d->ddckCKSrcBlt.dwColorSpaceHighValue = src_d->ddckCKSrcBlt.dwColorSpaceHighValue;
	}

	/* Copy the main memory texture into the surface that corresponds to the OpenGL
	   texture object. */
	memcpy(dst_d->lpSurface, src_d->lpSurface, src_d->u1.lPitch * src_d->dwHeight);

	if (glThis != NULL) {
	    /* If the GetHandle was not done, it is an error... */
	    if (glThis->tex_name == 0) ERR("Unbound GL texture !!!\n");

	    /* Set this texture as dirty */
	    glThis->dirty_flag = TRUE;
	}
    }

    return ret_value;
}

HRESULT WINAPI
Thunk_IDirect3DTextureImpl_2_QueryInterface(LPDIRECT3DTEXTURE2 iface,
                                            REFIID riid,
                                            LPVOID* obp)
{
    TRACE("(%p)->(%s,%p) thunking to IDirectDrawSurface7 interface.\n", iface, debugstr_guid(riid), obp);
    return IDirectDrawSurface7_QueryInterface(COM_INTERFACE_CAST(IDirectDrawSurfaceImpl, IDirect3DTexture2, IDirectDrawSurface7, iface),
					      riid,
					      obp);
}

ULONG WINAPI
Thunk_IDirect3DTextureImpl_2_AddRef(LPDIRECT3DTEXTURE2 iface)
{
    TRACE("(%p)->() thunking to IDirectDrawSurface7 interface.\n", iface);
    return IDirectDrawSurface7_AddRef(COM_INTERFACE_CAST(IDirectDrawSurfaceImpl, IDirect3DTexture2, IDirectDrawSurface7, iface));
}

ULONG WINAPI
Thunk_IDirect3DTextureImpl_2_Release(LPDIRECT3DTEXTURE2 iface)
{
    TRACE("(%p)->() thunking to IDirectDrawSurface7 interface.\n", iface);
    return IDirectDrawSurface7_Release(COM_INTERFACE_CAST(IDirectDrawSurfaceImpl, IDirect3DTexture2, IDirectDrawSurface7, iface));
}

HRESULT WINAPI
Thunk_IDirect3DTextureImpl_1_QueryInterface(LPDIRECT3DTEXTURE iface,
                                            REFIID riid,
                                            LPVOID* obp)
{
    TRACE("(%p)->(%s,%p) thunking to IDirectDrawSurface7 interface.\n", iface, debugstr_guid(riid), obp);
    return IDirectDrawSurface7_QueryInterface(COM_INTERFACE_CAST(IDirectDrawSurfaceImpl, IDirect3DTexture, IDirectDrawSurface7, iface),
					      riid,
					      obp);
}

ULONG WINAPI
Thunk_IDirect3DTextureImpl_1_AddRef(LPDIRECT3DTEXTURE iface)
{
    TRACE("(%p)->() thunking to IDirectDrawSurface7 interface.\n", iface);
    return IDirectDrawSurface7_AddRef(COM_INTERFACE_CAST(IDirectDrawSurfaceImpl, IDirect3DTexture, IDirectDrawSurface7, iface));
}

ULONG WINAPI
Thunk_IDirect3DTextureImpl_1_Release(LPDIRECT3DTEXTURE iface)
{
    TRACE("(%p)->() thunking to IDirectDrawSurface7 interface.\n", iface);
    return IDirectDrawSurface7_Release(COM_INTERFACE_CAST(IDirectDrawSurfaceImpl, IDirect3DTexture, IDirectDrawSurface7, iface));
}

HRESULT WINAPI
Thunk_IDirect3DTextureImpl_1_PaletteChanged(LPDIRECT3DTEXTURE iface,
                                            DWORD dwStart,
                                            DWORD dwCount)
{
    TRACE("(%p)->(%08lx,%08lx) thunking to IDirect3DTexture2 interface.\n", iface, dwStart, dwCount);
    return IDirect3DTexture2_PaletteChanged(COM_INTERFACE_CAST(IDirectDrawSurfaceImpl, IDirect3DTexture, IDirect3DTexture2, iface),
                                            dwStart,
                                            dwCount);
}

HRESULT WINAPI
Thunk_IDirect3DTextureImpl_1_GetHandle(LPDIRECT3DTEXTURE iface,
				       LPDIRECT3DDEVICE lpDirect3DDevice,
				       LPD3DTEXTUREHANDLE lpHandle)
{
    TRACE("(%p)->(%p,%p) thunking to IDirect3DTexture2 interface.\n", iface, lpDirect3DDevice, lpHandle);
    return IDirect3DTexture2_GetHandle(COM_INTERFACE_CAST(IDirectDrawSurfaceImpl, IDirect3DTexture, IDirect3DTexture2, iface),
				       COM_INTERFACE_CAST(IDirect3DDeviceImpl, IDirect3DDevice, IDirect3DDevice2, lpDirect3DDevice),
				       lpHandle);
}

HRESULT WINAPI
Thunk_IDirect3DTextureImpl_1_Load(LPDIRECT3DTEXTURE iface,
				  LPDIRECT3DTEXTURE lpD3DTexture)
{
    TRACE("(%p)->(%p) thunking to IDirect3DTexture2 interface.\n", iface, lpD3DTexture);
    return IDirect3DTexture2_Load(COM_INTERFACE_CAST(IDirectDrawSurfaceImpl, IDirect3DTexture, IDirect3DTexture2, iface),
				  COM_INTERFACE_CAST(IDirectDrawSurfaceImpl, IDirect3DTexture, IDirect3DTexture2, lpD3DTexture));
}

#if !defined(__STRICT_ANSI__) && defined(__GNUC__)
# define XCAST(fun)     (typeof(VTABLE_IDirect3DTexture2.fun))
#else
# define XCAST(fun)     (void*)
#endif

ICOM_VTABLE(IDirect3DTexture2) VTABLE_IDirect3DTexture2 =
{
    ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
    XCAST(QueryInterface) Thunk_IDirect3DTextureImpl_2_QueryInterface,
    XCAST(AddRef) Thunk_IDirect3DTextureImpl_2_AddRef,
    XCAST(Release) Thunk_IDirect3DTextureImpl_2_Release,
    XCAST(GetHandle) Main_IDirect3DTextureImpl_2_1T_GetHandle,
    XCAST(PaletteChanged) Main_IDirect3DTextureImpl_2_1T_PaletteChanged,
    XCAST(Load) GL_IDirect3DTextureImpl_2_1T_Load,
};

#if !defined(__STRICT_ANSI__) && defined(__GNUC__)
#undef XCAST
#endif


#if !defined(__STRICT_ANSI__) && defined(__GNUC__)
# define XCAST(fun)     (typeof(VTABLE_IDirect3DTexture.fun))
#else
# define XCAST(fun)     (void*)
#endif

ICOM_VTABLE(IDirect3DTexture) VTABLE_IDirect3DTexture =
{
    ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
    XCAST(QueryInterface) Thunk_IDirect3DTextureImpl_1_QueryInterface,
    XCAST(AddRef) Thunk_IDirect3DTextureImpl_1_AddRef,
    XCAST(Release) Thunk_IDirect3DTextureImpl_1_Release,
    XCAST(Initialize) Main_IDirect3DTextureImpl_1_Initialize,
    XCAST(GetHandle) Thunk_IDirect3DTextureImpl_1_GetHandle,
    XCAST(PaletteChanged) Thunk_IDirect3DTextureImpl_1_PaletteChanged,
    XCAST(Load) Thunk_IDirect3DTextureImpl_1_Load,
    XCAST(Unload) Main_IDirect3DTextureImpl_1_Unload,
};

#if !defined(__STRICT_ANSI__) && defined(__GNUC__)
#undef XCAST
#endif

HRESULT d3dtexture_create(IDirect3DImpl *d3d, IDirectDrawSurfaceImpl *surf, BOOLEAN at_creation, 
			  IDirectDrawSurfaceImpl *main)
{
    /* First, initialize the texture vtables... */
    ICOM_INIT_INTERFACE(surf, IDirect3DTexture,  VTABLE_IDirect3DTexture);
    ICOM_INIT_INTERFACE(surf, IDirect3DTexture2, VTABLE_IDirect3DTexture2);
	
    /* Only create all the private stuff if we actually have an OpenGL context.. */
    if (d3d->current_device != NULL) {
        IDirect3DTextureGLImpl *private;

        private = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(IDirect3DTextureGLImpl));
	if (private == NULL) return DDERR_OUTOFMEMORY;

	private->final_release = surf->final_release;
	private->lock_update = surf->lock_update;
	private->unlock_update = surf->unlock_update;
	private->set_palette = surf->set_palette;
	
	/* If at creation, we can optimize stuff and wait the first 'unlock' to upload a valid stuff to OpenGL.
	   Otherwise, it will be uploaded here (and may be invalid). */
	surf->final_release = gltex_final_release;
	surf->lock_update = gltex_lock_update;
	surf->unlock_update = gltex_unlock_update;
	surf->tex_private = private;
	surf->aux_setcolorkey_cb = gltex_setcolorkey_cb;
	surf->set_palette = gltex_set_palette;

	ENTER_GL();
	if (surf->mipmap_level == 0) {
	    glGenTextures(1, &(private->tex_name));
	    if (private->tex_name == 0) ERR("Error at creation of OpenGL texture ID !\n");
	    TRACE(" GL texture created for surface %p (private data at %p and GL id %d).\n", surf, private, private->tex_name);
	} else {
	    private->tex_name = ((IDirect3DTextureGLImpl *) (main->tex_private))->tex_name;
	    TRACE(" GL texture created for surface %p (private data at %p and GL id reusing id %d from surface %p (%p)).\n",
		  surf, private, private->tex_name, main, main->tex_private);
	}
	LEAVE_GL();

	/* And set the dirty flag accordingly */
	private->dirty_flag = (at_creation == FALSE);
	private->initial_upload_done = FALSE;
    }

    return D3D_OK;
}