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   1 /* Direct3D Texture
   2  * Copyright (c) 1998 Lionel ULMER
   3  *
   4  * This file contains the implementation of interface Direct3DTexture2.
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include "config.h"
  22
  23 #include <stdarg.h>
  24 #include <string.h>
  25
  26 #define NONAMELESSUNION
  27 #define NONAMELESSSTRUCT
  28 #include "windef.h"
  29 #include "winbase.h"
  30 #include "winerror.h"
  31 #include "objbase.h"
  32 #include "wingdi.h"
  33 #include "ddraw.h"
  34 #include "d3d.h"
  35 #include "wine/debug.h"
  36
  37 #include "mesa_private.h"
  38
  39 WINE_DEFAULT_DEBUG_CHANNEL(ddraw);
  40 WINE_DECLARE_DEBUG_CHANNEL(ddraw_tex);
  41
  42 #include <stdio.h>
  43
  44 static void
  45 snoop_texture(IDirectDrawSurfaceImpl *This) {
  46     IDirect3DTextureGLImpl *glThis = (IDirect3DTextureGLImpl *) This->tex_private;
  47     char buf[128];
  48     FILE *f;
  49
  50     TRACE_(ddraw_tex)("Dumping surface id (%5d) level (%2d) : \n", glThis->tex_name, This->mipmap_level);
  51     DDRAW_dump_surface_desc(&(This->surface_desc));
  52
  53     sprintf(buf, "tex_%05d_%02d.pnm", glThis->tex_name, This->mipmap_level);
  54     f = fopen(buf, "wb");
  55     DDRAW_dump_surface_to_disk(This, f, 1);
  56 }
  57
  58 static IDirectDrawSurfaceImpl *
  59 get_sub_mimaplevel(IDirectDrawSurfaceImpl *tex_ptr)
  60 {
  61     /* Now go down the mipmap chain to the next surface */
  62     static const DDSCAPS2 mipmap_caps = { DDSCAPS_MIPMAP | DDSCAPS_TEXTURE, 0, 0, 0 };
  63     LPDIRECTDRAWSURFACE7 next_level;
  64     IDirectDrawSurfaceImpl *surf_ptr;
  65     HRESULT hr;
  66
  67     hr = IDirectDrawSurface7_GetAttachedSurface(ICOM_INTERFACE(tex_ptr, IDirectDrawSurface7),
  68                                                 (DDSCAPS2 *) &mipmap_caps, &next_level);
  69     if (FAILED(hr)) return NULL;
  70
  71     surf_ptr = ICOM_OBJECT(IDirectDrawSurfaceImpl, IDirectDrawSurface7, next_level);
  72     IDirectDrawSurface7_Release(next_level);
  73
  74     return surf_ptr;
  75 }
  76
  77 /*******************************************************************************
  78  *                         IDirectSurface callback methods
  79  */
  80
  81 HRESULT
  82 gltex_download_texture(IDirectDrawSurfaceImpl *surf_ptr) {
  83     IDirect3DTextureGLImpl *gl_surf_ptr = (IDirect3DTextureGLImpl *) surf_ptr->tex_private;
  84
  85     FIXME("This is not supported yet... Expect some graphical glitches !!!\n");
  86
  87     /* GL and memory are in sync again ...
  88        No need to change the 'global' flag as it only handles the 'MEMORY_DIRTY' case.
  89     */
  90     gl_surf_ptr->dirty_flag = SURFACE_MEMORY;
  91
  92     return DD_OK;
  93 }
  94
  95 static GLenum
  96 convert_min_filter_to_GL(D3DTEXTUREMINFILTER dwMinState, D3DTEXTUREMIPFILTER dwMipState)
  97 {
  98     GLenum gl_state;
  99
 100     if (dwMipState == D3DTFP_NONE) {
 101         switch (dwMinState) {
 102             case D3DTFN_POINT:  gl_state = GL_NEAREST; break;
 103             case D3DTFN_LINEAR: gl_state = GL_LINEAR;  break;
 104             default:            gl_state = GL_LINEAR;  break;
 105         }
 106     } else if (dwMipState == D3DTFP_POINT) {
 107         switch (dwMinState) {
 108             case D3DTFN_POINT:  gl_state = GL_NEAREST_MIPMAP_NEAREST; break;
 109             case D3DTFN_LINEAR: gl_state = GL_LINEAR_MIPMAP_NEAREST;  break;
 110             default:            gl_state = GL_LINEAR_MIPMAP_NEAREST;  break;
 111         }
 112     } else {
 113         switch (dwMinState) {
 114             case D3DTFN_POINT:  gl_state = GL_NEAREST_MIPMAP_LINEAR; break;
 115             case D3DTFN_LINEAR: gl_state = GL_LINEAR_MIPMAP_LINEAR;  break;
 116             default:            gl_state = GL_LINEAR_MIPMAP_LINEAR;  break;
 117         }
 118     }
 119     return gl_state;
 120 }
 121
 122 static GLenum
 123 convert_mag_filter_to_GL(D3DTEXTUREMAGFILTER dwState)
 124 {
 125     GLenum gl_state;
 126
 127     switch (dwState) {
 128         case D3DTFG_POINT:
 129             gl_state = GL_NEAREST;
 130             break;
 131         case D3DTFG_LINEAR:
 132             gl_state = GL_LINEAR;
 133             break;
 134         default:
 135             gl_state = GL_LINEAR;
 136             break;
 137     }
 138     return gl_state;
 139 }
 140
 141 static GLenum
 142 convert_tex_address_to_GL(D3DTEXTUREADDRESS dwState)
 143 {
 144     GLenum gl_state;
 145     switch (dwState) {
 146         case D3DTADDRESS_WRAP:   gl_state = GL_REPEAT; break;
 147         case D3DTADDRESS_CLAMP:  gl_state = GL_CLAMP; break;
 148         case D3DTADDRESS_BORDER: gl_state = GL_CLAMP_TO_EDGE; break;
 149         case D3DTADDRESS_MIRROR:
 150             if (GL_extensions.mirrored_repeat) {
 151                 gl_state = GL_MIRRORED_REPEAT_WINE;
 152             } else {
 153                 gl_state = GL_REPEAT;
 154                 /* This is a TRACE instead of a FIXME as the FIXME was already printed when the game
 155                    actually set D3DTADDRESS_MIRROR.
 156                 */
 157                 TRACE(" setting GL_REPEAT instead of GL_MIRRORED_REPEAT.\n");
 158             }
 159         break;
 160         default:                 gl_state = GL_REPEAT; break;
 161     }
 162     return gl_state;
 163 }
 164
 165 HRESULT
 166 gltex_upload_texture(IDirectDrawSurfaceImpl *surf_ptr, IDirect3DDeviceImpl *d3ddev, DWORD stage) {
 167     IDirect3DTextureGLImpl *gl_surf_ptr = (IDirect3DTextureGLImpl *) surf_ptr->tex_private;
 168     IDirect3DDeviceGLImpl *gl_d3ddev = (IDirect3DDeviceGLImpl *) d3ddev;
 169     BOOLEAN changed = FALSE;
 170     GLenum unit = GL_TEXTURE0_WINE + stage;
 171
 172     if (surf_ptr->mipmap_level != 0) {
 173         WARN(" application activating a sub-level of the mipmapping chain (level %d) !\n", surf_ptr->mipmap_level);
 174     }
 175
 176     /* Now check if the texture parameters for this texture are still in-line with what D3D expect
 177        us to do..
 178
 179        NOTE: there is no check for the situation where the same texture is bound to multiple stage
 180              but with different parameters per stage.
 181     */
 182     if ((gl_surf_ptr->tex_parameters == NULL) ||
 183         (gl_surf_ptr->tex_parameters[D3DTSS_MAXMIPLEVEL - D3DTSS_ADDRESSU] !=
 184          d3ddev->state_block.texture_stage_state[stage][D3DTSS_MAXMIPLEVEL - 1])) {
 185         DWORD max_mip_level;
 186
 187         if ((surf_ptr->surface_desc.ddsCaps.dwCaps & DDSCAPS_MIPMAP) == 0) {
 188             max_mip_level = 0;
 189         } else {
 190             max_mip_level = surf_ptr->surface_desc.u2.dwMipMapCount - 1;
 191             if (d3ddev->state_block.texture_stage_state[stage][D3DTSS_MAXMIPLEVEL - 1] != 0) {
 192                 if (max_mip_level >= d3ddev->state_block.texture_stage_state[stage][D3DTSS_MAXMIPLEVEL - 1]) {
 193                     max_mip_level = d3ddev->state_block.texture_stage_state[stage][D3DTSS_MAXMIPLEVEL - 1] - 1;
 194                 }
 195             }
 196         }
 197         if (unit != gl_d3ddev->current_active_tex_unit) {
 198             GL_extensions.glActiveTexture(unit);
 199             gl_d3ddev->current_active_tex_unit = unit;
 200         }
 201         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, max_mip_level);
 202         changed = TRUE;
 203     }
 204
 205     if ((gl_surf_ptr->tex_parameters == NULL) ||
 206         (gl_surf_ptr->tex_parameters[D3DTSS_MAGFILTER - D3DTSS_ADDRESSU] !=
 207          d3ddev->state_block.texture_stage_state[stage][D3DTSS_MAGFILTER - 1])) {
 208         if (unit != gl_d3ddev->current_active_tex_unit) {
 209             GL_extensions.glActiveTexture(unit);
 210             gl_d3ddev->current_active_tex_unit = unit;
 211         }
 212         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER,
 213                         convert_mag_filter_to_GL(d3ddev->state_block.texture_stage_state[stage][D3DTSS_MAGFILTER - 1]));
 214         changed = TRUE;
 215     }
 216     if ((gl_surf_ptr->tex_parameters == NULL) ||
 217         (gl_surf_ptr->tex_parameters[D3DTSS_MINFILTER - D3DTSS_ADDRESSU] !=
 218          d3ddev->state_block.texture_stage_state[stage][D3DTSS_MINFILTER - 1]) ||
 219         (gl_surf_ptr->tex_parameters[D3DTSS_MIPFILTER - D3DTSS_ADDRESSU] !=
 220          d3ddev->state_block.texture_stage_state[stage][D3DTSS_MIPFILTER - 1])) {
 221         if (unit != gl_d3ddev->current_active_tex_unit) {
 222             GL_extensions.glActiveTexture(unit);
 223             gl_d3ddev->current_active_tex_unit = unit;
 224         }
 225         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
 226                         convert_min_filter_to_GL(d3ddev->state_block.texture_stage_state[stage][D3DTSS_MINFILTER - 1],
 227                                                  d3ddev->state_block.texture_stage_state[stage][D3DTSS_MIPFILTER - 1]));
 228         changed = TRUE;
 229     }
 230     if ((gl_surf_ptr->tex_parameters == NULL) ||
 231         (gl_surf_ptr->tex_parameters[D3DTSS_ADDRESSU - D3DTSS_ADDRESSU] !=
 232          d3ddev->state_block.texture_stage_state[stage][D3DTSS_ADDRESSU - 1])) {
 233         if (unit != gl_d3ddev->current_active_tex_unit) {
 234             GL_extensions.glActiveTexture(unit);
 235             gl_d3ddev->current_active_tex_unit = unit;
 236         }
 237         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S,
 238                         convert_tex_address_to_GL(d3ddev->state_block.texture_stage_state[stage][D3DTSS_ADDRESSU - 1]));
 239         changed = TRUE;
 240     }
 241     if ((gl_surf_ptr->tex_parameters == NULL) ||
 242         (gl_surf_ptr->tex_parameters[D3DTSS_ADDRESSV - D3DTSS_ADDRESSU] !=
 243          d3ddev->state_block.texture_stage_state[stage][D3DTSS_ADDRESSV - 1])) {
 244         if (unit != gl_d3ddev->current_active_tex_unit) {
 245             GL_extensions.glActiveTexture(unit);
 246             gl_d3ddev->current_active_tex_unit = unit;
 247         }
 248         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T,
 249                         convert_tex_address_to_GL(d3ddev->state_block.texture_stage_state[stage][D3DTSS_ADDRESSV - 1]));
 250         changed = TRUE;
 251     }
 252     if ((gl_surf_ptr->tex_parameters == NULL) ||
 253         (gl_surf_ptr->tex_parameters[D3DTSS_BORDERCOLOR - D3DTSS_ADDRESSU] !=
 254          d3ddev->state_block.texture_stage_state[stage][D3DTSS_BORDERCOLOR - 1])) {
 255         GLfloat color[4];
 256
 257         color[0] = ((d3ddev->state_block.texture_stage_state[stage][D3DTSS_BORDERCOLOR - 1] >> 16) & 0xFF) / 255.0;
 258         color[1] = ((d3ddev->state_block.texture_stage_state[stage][D3DTSS_BORDERCOLOR - 1] >>  8) & 0xFF) / 255.0;
 259         color[2] = ((d3ddev->state_block.texture_stage_state[stage][D3DTSS_BORDERCOLOR - 1] >>  0) & 0xFF) / 255.0;
 260         color[3] = ((d3ddev->state_block.texture_stage_state[stage][D3DTSS_BORDERCOLOR - 1] >> 24) & 0xFF) / 255.0;
 261         if (unit != gl_d3ddev->current_active_tex_unit) {
 262             GL_extensions.glActiveTexture(unit);
 263             gl_d3ddev->current_active_tex_unit = unit;
 264         }
 265         glTexParameterfv(GL_TEXTURE_2D, GL_TEXTURE_BORDER_COLOR, color);
 266         changed = TRUE;
 267     }
 268
 269     if (changed) {
 270         if (gl_surf_ptr->tex_parameters == NULL) {
 271             gl_surf_ptr->tex_parameters = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
 272                                                     sizeof(DWORD) * (D3DTSS_MAXMIPLEVEL + 1 - D3DTSS_ADDRESSU));
 273         }
 274         memcpy(gl_surf_ptr->tex_parameters, &(d3ddev->state_block.texture_stage_state[stage][D3DTSS_ADDRESSU - 1]),
 275                sizeof(DWORD) * (D3DTSS_MAXMIPLEVEL + 1 - D3DTSS_ADDRESSU));
 276     }
 277
 278     if (*(gl_surf_ptr->global_dirty_flag) != SURFACE_MEMORY_DIRTY) {
 279         TRACE(" nothing to do - memory copy and GL state in synch for all texture levels.\n");
 280         return DD_OK;
 281     }
 282
 283     while (surf_ptr != NULL) {
 284         IDirect3DTextureGLImpl *gl_surf_ptr = (IDirect3DTextureGLImpl *) surf_ptr->tex_private;
 285
 286         if (gl_surf_ptr->dirty_flag != SURFACE_MEMORY_DIRTY) {
 287             TRACE("   - level %d already uploaded.\n", surf_ptr->mipmap_level);
 288         } else {
 289             TRACE("   - uploading texture level %d (initial done = %d).\n",
 290                   surf_ptr->mipmap_level, gl_surf_ptr->initial_upload_done);
 291
 292             /* Texture snooping for the curious :-) */
 293             if (TRACE_ON(ddraw_tex)) {
 294                 snoop_texture(surf_ptr);
 295             }
 296
 297             if (unit != gl_d3ddev->current_active_tex_unit) {
 298                 GL_extensions.glActiveTexture(unit);
 299                 gl_d3ddev->current_active_tex_unit = unit;
 300             }
 301
 302             if (upload_surface_to_tex_memory_init(surf_ptr, surf_ptr->mipmap_level, &(gl_surf_ptr->current_internal_format),
 303                                                   gl_surf_ptr->initial_upload_done == FALSE, TRUE, 0, 0) == DD_OK) {
 304                 upload_surface_to_tex_memory(NULL, 0, 0, &(gl_surf_ptr->surface_ptr));
 305                 upload_surface_to_tex_memory_release();
 306                 gl_surf_ptr->dirty_flag = SURFACE_MEMORY;
 307                 gl_surf_ptr->initial_upload_done = TRUE;
 308             } else {
 309                 ERR("Problem for upload of texture %d (level = %d / initial done = %d).\n",
 310                     gl_surf_ptr->tex_name, surf_ptr->mipmap_level, gl_surf_ptr->initial_upload_done);
 311             }
 312         }
 313
 314         if (surf_ptr->surface_desc.ddsCaps.dwCaps & DDSCAPS_MIPMAP) {
 315             surf_ptr = get_sub_mimaplevel(surf_ptr);
 316         } else {
 317             surf_ptr = NULL;
 318         }
 319     }
 320
 321     *(gl_surf_ptr->global_dirty_flag) = SURFACE_MEMORY;
 322
 323     return DD_OK;
 324 }
 325
 326 HRESULT WINAPI
 327 Main_IDirect3DTextureImpl_1_Initialize(LPDIRECT3DTEXTURE iface,
 328                                        LPDIRECT3DDEVICE lpDirect3DDevice,
 329                                        LPDIRECTDRAWSURFACE lpDDSurface)
 330 {
 331     ICOM_THIS_FROM(IDirectDrawSurfaceImpl, IDirect3DTexture, iface);
 332     FIXME("(%p/%p)->(%p,%p) no-op...\n", This, iface, lpDirect3DDevice, lpDDSurface);
 333     return DD_OK;
 334 }
 335
 336 static HRESULT
 337 gltex_setcolorkey_cb(IDirectDrawSurfaceImpl *This, DWORD dwFlags, LPDDCOLORKEY ckey )
 338 {
 339     IDirect3DTextureGLImpl *glThis = (IDirect3DTextureGLImpl *) This->tex_private;
 340
 341     if (glThis->dirty_flag == SURFACE_GL) {
 342         GLuint cur_tex;
 343
 344         TRACE(" flushing GL texture back to memory.\n");
 345
 346         ENTER_GL();
 347         glGetIntegerv(GL_TEXTURE_BINDING_2D, &cur_tex);
 348         glBindTexture(GL_TEXTURE_2D, glThis->tex_name);
 349         gltex_download_texture(This);
 350         glBindTexture(GL_TEXTURE_2D, cur_tex);
 351         LEAVE_GL();
 352     }
 353
 354     glThis->dirty_flag = SURFACE_MEMORY_DIRTY;
 355     *(glThis->global_dirty_flag) = SURFACE_MEMORY_DIRTY;
 356     /* TODO: check color-keying on mipmapped surfaces... */
 357
 358     return DD_OK;
 359 }
 360
 361 HRESULT
 362 gltex_blt(IDirectDrawSurfaceImpl *This, LPRECT rdst,
 363           LPDIRECTDRAWSURFACE7 src, LPRECT rsrc,
 364           DWORD dwFlags, LPDDBLTFX lpbltfx)
 365 {
 366     if (src != NULL) {
 367         IDirectDrawSurfaceImpl *src_ptr = ICOM_OBJECT(IDirectDrawSurfaceImpl, IDirectDrawSurface7, src);
 368         if (src_ptr->surface_desc.ddsCaps.dwCaps & DDSCAPS_3DDEVICE) {
 369             FIXME("Blt from framebuffer to texture - unsupported now, please report !\n");
 370         }
 371     }
 372     return DDERR_INVALIDPARAMS;
 373 }
 374
 375 HRESULT
 376 gltex_bltfast(IDirectDrawSurfaceImpl *surf_ptr, DWORD dstx,
 377               DWORD dsty, LPDIRECTDRAWSURFACE7 src,
 378               LPRECT rsrc, DWORD trans)
 379 {
 380     if (src != NULL) {
 381         IDirectDrawSurfaceImpl *src_ptr = ICOM_OBJECT(IDirectDrawSurfaceImpl, IDirectDrawSurface7, src);
 382
 383         if ((src_ptr->surface_desc.ddsCaps.dwCaps & DDSCAPS_3DDEVICE) &&
 384             ((trans & (DDBLTFAST_SRCCOLORKEY | DDBLTFAST_DESTCOLORKEY)) == 0)) {
 385             /* This is a blt without color keying... We can use the direct copy. */
 386             RECT rsrc2;
 387             DWORD width, height;
 388             GLuint cur_tex;
 389             IDirect3DTextureGLImpl *gl_surf_ptr = surf_ptr->tex_private;
 390             int y;
 391
 392             if (rsrc == NULL) {
 393                 WARN("rsrc is NULL\n");
 394                 rsrc = &rsrc2;
 395
 396                 rsrc->left = 0;
 397                 rsrc->top = 0;
 398                 rsrc->right = src_ptr->surface_desc.dwWidth;
 399                 rsrc->bottom = src_ptr->surface_desc.dwHeight;
 400             }
 401
 402             width = rsrc->right - rsrc->left;
 403             height = rsrc->bottom - rsrc->top;
 404
 405             if (((dstx + width)  > surf_ptr->surface_desc.dwWidth) ||
 406                 ((dsty + height) > surf_ptr->surface_desc.dwHeight)) {
 407                 FIXME("Does not handle clipping yet in FB => Texture blits !\n");
 408                 return DDERR_INVALIDPARAMS;
 409             }
 410
 411             if ((width == 0) || (height == 0)) {
 412                 return DD_OK;
 413             }
 414
 415             TRACE(" direct frame buffer => texture BltFast override.\n");
 416
 417             ENTER_GL();
 418
 419             glGetIntegerv(GL_TEXTURE_BINDING_2D, &cur_tex);
 420             /* This call is to create the actual texture name in GL (as we do 'late' ID creation) */
 421             gltex_get_tex_name(surf_ptr);
 422             glBindTexture(GL_TEXTURE_2D, gl_surf_ptr->tex_name);
 423
 424             if ((gl_surf_ptr->dirty_flag == SURFACE_MEMORY_DIRTY) &&
 425                 !((dstx == 0) && (dsty == 0) &&
 426                   (width == surf_ptr->surface_desc.dwWidth) && (height == surf_ptr->surface_desc.dwHeight))) {
 427                 /* If not 'full size' and the surface is dirty, first flush it to GL before doing the copy. */
 428                 if (upload_surface_to_tex_memory_init(surf_ptr, surf_ptr->mipmap_level, &(gl_surf_ptr->current_internal_format),
 429                                                       gl_surf_ptr->initial_upload_done == FALSE, TRUE, 0, 0) == DD_OK) {
 430                     upload_surface_to_tex_memory(NULL, 0, 0, &(gl_surf_ptr->surface_ptr));
 431                     upload_surface_to_tex_memory_release();
 432                     gl_surf_ptr->dirty_flag = SURFACE_MEMORY;
 433                     gl_surf_ptr->initial_upload_done = TRUE;
 434                 } else {
 435                     glBindTexture(GL_TEXTURE_2D, cur_tex);
 436                     LEAVE_GL();
 437                     ERR("Error at texture upload !\n");
 438                     return DDERR_INVALIDPARAMS;
 439                 }
 440             }
 441
 442             /* This is a hack and would need some clean-up :-) */
 443             if (gl_surf_ptr->initial_upload_done == FALSE) {
 444                 if (upload_surface_to_tex_memory_init(surf_ptr, surf_ptr->mipmap_level, &(gl_surf_ptr->current_internal_format),
 445                                                       TRUE, TRUE, 0, 0) == DD_OK) {
 446                     upload_surface_to_tex_memory(NULL, 0, 0, &(gl_surf_ptr->surface_ptr));
 447                     upload_surface_to_tex_memory_release();
 448                     gl_surf_ptr->dirty_flag = SURFACE_MEMORY;
 449                     gl_surf_ptr->initial_upload_done = TRUE;
 450                 } else {
 451                     glBindTexture(GL_TEXTURE_2D, cur_tex);
 452                     LEAVE_GL();
 453                     ERR("Error at texture upload (initial case) !\n");
 454                     return DDERR_INVALIDPARAMS;
 455                 }
 456             }
 457
 458             if ((src_ptr->surface_desc.ddsCaps.dwCaps & (DDSCAPS_FRONTBUFFER|DDSCAPS_PRIMARYSURFACE)) != 0)
 459                 glReadBuffer(GL_FRONT);
 460             else if ((src_ptr->surface_desc.ddsCaps.dwCaps & (DDSCAPS_BACKBUFFER)) == (DDSCAPS_BACKBUFFER))
 461                 glReadBuffer(GL_BACK);
 462             else {
 463                 ERR("Wrong surface type for locking !\n");
 464                 glBindTexture(GL_TEXTURE_2D, cur_tex);
 465                 LEAVE_GL();
 466                 return DDERR_INVALIDPARAMS;
 467             }
 468
 469             for (y = (src_ptr->surface_desc.dwHeight - rsrc->top - 1);
 470                  y >= (src_ptr->surface_desc.dwHeight - (rsrc->top + height));
 471                  y--) {
 472                 glCopyTexSubImage2D(GL_TEXTURE_2D, surf_ptr->mipmap_level,
 473                                     dstx, dsty,
 474                                     rsrc->left, y,
 475                                     width, 1);
 476                 dsty++;
 477             }
 478
 479             glBindTexture(GL_TEXTURE_2D, cur_tex);
 480             LEAVE_GL();
 481
 482             /* The SURFACE_GL case is not handled by the 'global' dirty flag */
 483             gl_surf_ptr->dirty_flag = SURFACE_GL;
 484
 485             return DD_OK;
 486         }
 487     }
 488     return DDERR_INVALIDPARAMS;
 489 }
 490
 491 HRESULT WINAPI
 492 Main_IDirect3DTextureImpl_2_1T_PaletteChanged(LPDIRECT3DTEXTURE2 iface,
 493                                               DWORD dwStart,
 494                                               DWORD dwCount)
 495 {
 496     ICOM_THIS_FROM(IDirectDrawSurfaceImpl, IDirect3DTexture2, iface);
 497     FIXME("(%p/%p)->(%08lx,%08lx): stub!\n", This, iface, dwStart, dwCount);
 498     return DD_OK;
 499 }
 500
 501 HRESULT WINAPI
 502 Main_IDirect3DTextureImpl_1_Unload(LPDIRECT3DTEXTURE iface)
 503 {
 504     ICOM_THIS_FROM(IDirectDrawSurfaceImpl, IDirect3DTexture, iface);
 505     FIXME("(%p/%p)->(): stub!\n", This, iface);
 506     return DD_OK;
 507 }
 508
 509 HRESULT WINAPI
 510 Main_IDirect3DTextureImpl_2_1T_GetHandle(LPDIRECT3DTEXTURE2 iface,
 511                                          LPDIRECT3DDEVICE2 lpDirect3DDevice2,
 512                                          LPD3DTEXTUREHANDLE lpHandle)
 513 {
 514     ICOM_THIS_FROM(IDirectDrawSurfaceImpl, IDirect3DTexture2, iface);
 515     IDirect3DDeviceImpl *lpDeviceImpl = ICOM_OBJECT(IDirect3DDeviceImpl, IDirect3DDevice2, lpDirect3DDevice2);
 516
 517     TRACE("(%p/%p)->(%p,%p)\n", This, iface, lpDirect3DDevice2, lpHandle);
 518
 519     /* The handle is simply the pointer to the implementation structure */
 520     *lpHandle = (D3DTEXTUREHANDLE) This;
 521
 522     TRACE(" returning handle %08lx.\n", *lpHandle);
 523
 524     /* Now set the device for this texture */
 525     This->d3ddevice = lpDeviceImpl;
 526
 527     return D3D_OK;
 528 }
 529
 530 HRESULT WINAPI
 531 Main_IDirect3DTextureImpl_2_1T_Load(LPDIRECT3DTEXTURE2 iface,
 532                                     LPDIRECT3DTEXTURE2 lpD3DTexture2)
 533 {
 534     ICOM_THIS_FROM(IDirectDrawSurfaceImpl, IDirect3DTexture2, iface);
 535     FIXME("(%p/%p)->(%p): stub!\n", This, iface, lpD3DTexture2);
 536     return DD_OK;
 537 }
 538
 539 static void gltex_set_palette(IDirectDrawSurfaceImpl* This, IDirectDrawPaletteImpl* pal)
 540 {
 541     IDirect3DTextureGLImpl *glThis = (IDirect3DTextureGLImpl *) This->tex_private;
 542
 543     if (glThis->dirty_flag == SURFACE_GL) {
 544         GLuint cur_tex;
 545
 546         TRACE(" flushing GL texture back to memory.\n");
 547
 548         ENTER_GL();
 549         glGetIntegerv(GL_TEXTURE_BINDING_2D, &cur_tex);
 550         glBindTexture(GL_TEXTURE_2D, glThis->tex_name);
 551         gltex_download_texture(This);
 552         glBindTexture(GL_TEXTURE_2D, cur_tex);
 553         LEAVE_GL();
 554     }
 555
 556     /* First call the previous set_palette function */
 557     glThis->set_palette(This, pal);
 558
 559     /* And set the dirty flag */
 560     glThis->dirty_flag = SURFACE_MEMORY_DIRTY;
 561     *(glThis->global_dirty_flag) = SURFACE_MEMORY_DIRTY;
 562
 563     /* TODO: check palette on mipmapped surfaces...
 564        TODO: do we need to re-upload in case of usage of the paletted texture extension ? */
 565 }
 566
 567 static void
 568 gltex_final_release(IDirectDrawSurfaceImpl *This)
 569 {
 570     IDirect3DTextureGLImpl *glThis = (IDirect3DTextureGLImpl *) This->tex_private;
 571     DWORD mem_used;
 572     int i;
 573
 574     TRACE(" deleting texture with GL id %d.\n", glThis->tex_name);
 575
 576     /* And delete texture handle */
 577     ENTER_GL();
 578     if (glThis->tex_name != 0)
 579         glDeleteTextures(1, &(glThis->tex_name));
 580     LEAVE_GL();
 581
 582     HeapFree(GetProcessHeap(), 0, glThis->surface_ptr);
 583
 584     /* And if this texture was the current one, remove it at the device level */
 585     if (This->d3ddevice != NULL)
 586         for (i = 0; i < MAX_TEXTURES; i++)
 587             if (This->d3ddevice->current_texture[i] == This)
 588                 This->d3ddevice->current_texture[i] = NULL;
 589
 590     /* All this should be part of main surface management not just a hack for texture.. */
 591     if (glThis->loaded) {
 592         mem_used = This->surface_desc.dwHeight *
 593                    This->surface_desc.u1.lPitch;
 594         This->ddraw_owner->free_memory(This->ddraw_owner, mem_used);
 595     }
 596
 597     glThis->final_release(This);
 598 }
 599
 600 static void
 601 gltex_lock_update(IDirectDrawSurfaceImpl* This, LPCRECT pRect, DWORD dwFlags)
 602 {
 603     IDirect3DTextureGLImpl *glThis = (IDirect3DTextureGLImpl *) This->tex_private;
 604
 605     glThis->lock_update(This, pRect, dwFlags);
 606 }
 607
 608 static void
 609 gltex_unlock_update(IDirectDrawSurfaceImpl* This, LPCRECT pRect)
 610 {
 611     IDirect3DTextureGLImpl *glThis = (IDirect3DTextureGLImpl *) This->tex_private;
 612
 613     glThis->unlock_update(This, pRect);
 614
 615     /* Set the dirty flag according to the lock type */
 616     if ((This->lastlocktype & DDLOCK_READONLY) == 0) {
 617         glThis->dirty_flag = SURFACE_MEMORY_DIRTY;
 618         *(glThis->global_dirty_flag) = SURFACE_MEMORY_DIRTY;
 619     }
 620 }
 621
 622 HRESULT WINAPI
 623 GL_IDirect3DTextureImpl_2_1T_Load(LPDIRECT3DTEXTURE2 iface,
 624                                   LPDIRECT3DTEXTURE2 lpD3DTexture2)
 625 {
 626     ICOM_THIS_FROM(IDirectDrawSurfaceImpl, IDirect3DTexture2, iface);
 627     IDirectDrawSurfaceImpl *src_ptr = ICOM_OBJECT(IDirectDrawSurfaceImpl, IDirect3DTexture2, lpD3DTexture2);
 628     IDirectDrawSurfaceImpl *dst_ptr = This;
 629     HRESULT ret_value = D3D_OK;
 630
 631     TRACE("(%p/%p)->(%p)\n", This, iface, lpD3DTexture2);
 632
 633     if (((src_ptr->surface_desc.ddsCaps.dwCaps & DDSCAPS_MIPMAP) != (dst_ptr->surface_desc.ddsCaps.dwCaps & DDSCAPS_MIPMAP)) ||
 634         (src_ptr->surface_desc.u2.dwMipMapCount != dst_ptr->surface_desc.u2.dwMipMapCount)) {
 635         ERR("Trying to load surfaces with different mip-map counts !\n");
 636     }
 637
 638     /* Now loop through all mipmap levels and load all of them... */
 639     while (1) {
 640         IDirect3DTextureGLImpl *gl_dst_ptr = (IDirect3DTextureGLImpl *) dst_ptr->tex_private;
 641         DDSURFACEDESC *src_d, *dst_d;
 642
 643         if (gl_dst_ptr != NULL) {
 644             if (gl_dst_ptr->loaded == FALSE) {
 645                 /* Only check memory for not already loaded texture... */
 646                 DWORD mem_used;
 647                 if (dst_ptr->surface_desc.u4.ddpfPixelFormat.dwFlags & DDPF_FOURCC)
 648                     mem_used = dst_ptr->surface_desc.u1.dwLinearSize;
 649                 else
 650                     mem_used = dst_ptr->surface_desc.dwHeight * dst_ptr->surface_desc.u1.lPitch;
 651                 if (This->ddraw_owner->allocate_memory(This->ddraw_owner, mem_used) < 0) {
 652                     TRACE(" out of virtual memory... Warning application.\n");
 653                     return D3DERR_TEXTURE_LOAD_FAILED;
 654                 }
 655             }
 656             gl_dst_ptr->loaded = TRUE;
 657         }
 658
 659         TRACE(" copying surface %p to surface %p (mipmap level %d)\n", src_ptr, dst_ptr, src_ptr->mipmap_level);
 660
 661         if ( dst_ptr->surface_desc.ddsCaps.dwCaps & DDSCAPS_ALLOCONLOAD )
 662             /* If the surface is not allocated and its location is not yet specified,
 663                force it to video memory */
 664             if ( !(dst_ptr->surface_desc.ddsCaps.dwCaps & (DDSCAPS_SYSTEMMEMORY|DDSCAPS_VIDEOMEMORY)) )
 665                 dst_ptr->surface_desc.ddsCaps.dwCaps |= DDSCAPS_VIDEOMEMORY;
 666
 667         /* Suppress the ALLOCONLOAD flag */
 668         dst_ptr->surface_desc.ddsCaps.dwCaps &= ~DDSCAPS_ALLOCONLOAD;
 669
 670         /* After seeing some logs, not sure at all about this... */
 671         if (dst_ptr->palette == NULL) {
 672             dst_ptr->palette = src_ptr->palette;
 673             if (src_ptr->palette != NULL) IDirectDrawPalette_AddRef(ICOM_INTERFACE(src_ptr->palette, IDirectDrawPalette));
 674         } else {
 675             if (src_ptr->palette != NULL) {
 676                 PALETTEENTRY palent[256];
 677                 IDirectDrawPalette_GetEntries(ICOM_INTERFACE(src_ptr->palette, IDirectDrawPalette),
 678                                               0, 0, 256, palent);
 679                 IDirectDrawPalette_SetEntries(ICOM_INTERFACE(dst_ptr->palette, IDirectDrawPalette),
 680                                               0, 0, 256, palent);
 681             }
 682         }
 683
 684         /* Copy one surface on the other */
 685         dst_d = (DDSURFACEDESC *)&(dst_ptr->surface_desc);
 686         src_d = (DDSURFACEDESC *)&(src_ptr->surface_desc);
 687
 688         if ((src_d->dwWidth != dst_d->dwWidth) || (src_d->dwHeight != dst_d->dwHeight)) {
 689             /* Should also check for same pixel format, u1.lPitch, ... */
 690             ERR("Error in surface sizes\n");
 691             return D3DERR_TEXTURE_LOAD_FAILED;
 692         } else {
 693             /* LPDIRECT3DDEVICE2 d3dd = (LPDIRECT3DDEVICE2) This->D3Ddevice; */
 694             /* I should put a macro for the calculus of bpp */
 695
 696             /* Copy also the ColorKeying stuff */
 697             if (src_d->dwFlags & DDSD_CKSRCBLT) {
 698                 dst_d->dwFlags |= DDSD_CKSRCBLT;
 699                 dst_d->ddckCKSrcBlt.dwColorSpaceLowValue = src_d->ddckCKSrcBlt.dwColorSpaceLowValue;
 700                 dst_d->ddckCKSrcBlt.dwColorSpaceHighValue = src_d->ddckCKSrcBlt.dwColorSpaceHighValue;
 701             }
 702
 703             /* Copy the main memory texture into the surface that corresponds to the OpenGL
 704                texture object. */
 705             if (dst_ptr->surface_desc.u4.ddpfPixelFormat.dwFlags & DDPF_FOURCC)
 706                 memcpy(dst_d->lpSurface, src_d->lpSurface, src_ptr->surface_desc.u1.dwLinearSize);
 707             else
 708                 memcpy(dst_d->lpSurface, src_d->lpSurface, src_d->u1.lPitch * src_d->dwHeight);
 709
 710             if (gl_dst_ptr != NULL) {
 711                 /* Set this texture as dirty */
 712                 gl_dst_ptr->dirty_flag = SURFACE_MEMORY_DIRTY;
 713                 *(gl_dst_ptr->global_dirty_flag) = SURFACE_MEMORY_DIRTY;
 714             }
 715         }
 716
 717         if (src_ptr->surface_desc.ddsCaps.dwCaps & DDSCAPS_MIPMAP) {
 718             src_ptr = get_sub_mimaplevel(src_ptr);
 719         } else {
 720             src_ptr = NULL;
 721         }
 722         if (dst_ptr->surface_desc.ddsCaps.dwCaps & DDSCAPS_MIPMAP) {
 723             dst_ptr = get_sub_mimaplevel(dst_ptr);
 724         } else {
 725             dst_ptr = NULL;
 726         }
 727
 728         if ((src_ptr == NULL) || (dst_ptr == NULL)) {
 729             if (src_ptr != dst_ptr) {
 730                 ERR(" Loading surface with different mipmap structure !!!\n");
 731             }
 732             break;
 733         }
 734     }
 735
 736     return ret_value;
 737 }
 738
 739 HRESULT WINAPI
 740 Thunk_IDirect3DTextureImpl_2_QueryInterface(LPDIRECT3DTEXTURE2 iface,
 741                                             REFIID riid,
 742                                             LPVOID* obp)
 743 {
 744     TRACE("(%p)->(%s,%p) thunking to IDirectDrawSurface7 interface.\n", iface, debugstr_guid(riid), obp);
 745     return IDirectDrawSurface7_QueryInterface(COM_INTERFACE_CAST(IDirectDrawSurfaceImpl, IDirect3DTexture2, IDirectDrawSurface7, iface),
 746                                               riid,
 747                                               obp);
 748 }
 749
 750 ULONG WINAPI
 751 Thunk_IDirect3DTextureImpl_2_AddRef(LPDIRECT3DTEXTURE2 iface)
 752 {
 753     TRACE("(%p)->() thunking to IDirectDrawSurface7 interface.\n", iface);
 754     return IDirectDrawSurface7_AddRef(COM_INTERFACE_CAST(IDirectDrawSurfaceImpl, IDirect3DTexture2, IDirectDrawSurface7, iface));
 755 }
 756
 757 ULONG WINAPI
 758 Thunk_IDirect3DTextureImpl_2_Release(LPDIRECT3DTEXTURE2 iface)
 759 {
 760     TRACE("(%p)->() thunking to IDirectDrawSurface7 interface.\n", iface);
 761     return IDirectDrawSurface7_Release(COM_INTERFACE_CAST(IDirectDrawSurfaceImpl, IDirect3DTexture2, IDirectDrawSurface7, iface));
 762 }
 763
 764 HRESULT WINAPI
 765 Thunk_IDirect3DTextureImpl_1_QueryInterface(LPDIRECT3DTEXTURE iface,
 766                                             REFIID riid,
 767                                             LPVOID* obp)
 768 {
 769     TRACE("(%p)->(%s,%p) thunking to IDirectDrawSurface7 interface.\n", iface, debugstr_guid(riid), obp);
 770     return IDirectDrawSurface7_QueryInterface(COM_INTERFACE_CAST(IDirectDrawSurfaceImpl, IDirect3DTexture, IDirectDrawSurface7, iface),
 771                                               riid,
 772                                               obp);
 773 }
 774
 775 ULONG WINAPI
 776 Thunk_IDirect3DTextureImpl_1_AddRef(LPDIRECT3DTEXTURE iface)
 777 {
 778     TRACE("(%p)->() thunking to IDirectDrawSurface7 interface.\n", iface);
 779     return IDirectDrawSurface7_AddRef(COM_INTERFACE_CAST(IDirectDrawSurfaceImpl, IDirect3DTexture, IDirectDrawSurface7, iface));
 780 }
 781
 782 ULONG WINAPI
 783 Thunk_IDirect3DTextureImpl_1_Release(LPDIRECT3DTEXTURE iface)
 784 {
 785     TRACE("(%p)->() thunking to IDirectDrawSurface7 interface.\n", iface);
 786     return IDirectDrawSurface7_Release(COM_INTERFACE_CAST(IDirectDrawSurfaceImpl, IDirect3DTexture, IDirectDrawSurface7, iface));
 787 }
 788
 789 HRESULT WINAPI
 790 Thunk_IDirect3DTextureImpl_1_PaletteChanged(LPDIRECT3DTEXTURE iface,
 791                                             DWORD dwStart,
 792                                             DWORD dwCount)
 793 {
 794     TRACE("(%p)->(%08lx,%08lx) thunking to IDirect3DTexture2 interface.\n", iface, dwStart, dwCount);
 795     return IDirect3DTexture2_PaletteChanged(COM_INTERFACE_CAST(IDirectDrawSurfaceImpl, IDirect3DTexture, IDirect3DTexture2, iface),
 796                                             dwStart,
 797                                             dwCount);
 798 }
 799
 800 HRESULT WINAPI
 801 Thunk_IDirect3DTextureImpl_1_GetHandle(LPDIRECT3DTEXTURE iface,
 802                                        LPDIRECT3DDEVICE lpDirect3DDevice,
 803                                        LPD3DTEXTUREHANDLE lpHandle)
 804 {
 805     TRACE("(%p)->(%p,%p) thunking to IDirect3DTexture2 interface.\n", iface, lpDirect3DDevice, lpHandle);
 806     return IDirect3DTexture2_GetHandle(COM_INTERFACE_CAST(IDirectDrawSurfaceImpl, IDirect3DTexture, IDirect3DTexture2, iface),
 807                                        COM_INTERFACE_CAST(IDirect3DDeviceImpl, IDirect3DDevice, IDirect3DDevice2, lpDirect3DDevice),
 808                                        lpHandle);
 809 }
 810
 811 HRESULT WINAPI
 812 Thunk_IDirect3DTextureImpl_1_Load(LPDIRECT3DTEXTURE iface,
 813                                   LPDIRECT3DTEXTURE lpD3DTexture)
 814 {
 815     TRACE("(%p)->(%p) thunking to IDirect3DTexture2 interface.\n", iface, lpD3DTexture);
 816     return IDirect3DTexture2_Load(COM_INTERFACE_CAST(IDirectDrawSurfaceImpl, IDirect3DTexture, IDirect3DTexture2, iface),
 817                                   COM_INTERFACE_CAST(IDirectDrawSurfaceImpl, IDirect3DTexture, IDirect3DTexture2, lpD3DTexture));
 818 }
 819
 820 #if !defined(__STRICT_ANSI__) && defined(__GNUC__)
 821 # define XCAST(fun)     (typeof(VTABLE_IDirect3DTexture2.fun))
 822 #else
 823 # define XCAST(fun)     (void*)
 824 #endif
 825
 826 IDirect3DTexture2Vtbl VTABLE_IDirect3DTexture2 =
 827 {
 828     XCAST(QueryInterface) Thunk_IDirect3DTextureImpl_2_QueryInterface,
 829     XCAST(AddRef) Thunk_IDirect3DTextureImpl_2_AddRef,
 830     XCAST(Release) Thunk_IDirect3DTextureImpl_2_Release,
 831     XCAST(GetHandle) Main_IDirect3DTextureImpl_2_1T_GetHandle,
 832     XCAST(PaletteChanged) Main_IDirect3DTextureImpl_2_1T_PaletteChanged,
 833     XCAST(Load) GL_IDirect3DTextureImpl_2_1T_Load,
 834 };
 835
 836 #if !defined(__STRICT_ANSI__) && defined(__GNUC__)
 837 #undef XCAST
 838 #endif
 839
 840
 841 #if !defined(__STRICT_ANSI__) && defined(__GNUC__)
 842 # define XCAST(fun)     (typeof(VTABLE_IDirect3DTexture.fun))
 843 #else
 844 # define XCAST(fun)     (void*)
 845 #endif
 846
 847 IDirect3DTextureVtbl VTABLE_IDirect3DTexture =
 848 {
 849     XCAST(QueryInterface) Thunk_IDirect3DTextureImpl_1_QueryInterface,
 850     XCAST(AddRef) Thunk_IDirect3DTextureImpl_1_AddRef,
 851     XCAST(Release) Thunk_IDirect3DTextureImpl_1_Release,
 852     XCAST(Initialize) Main_IDirect3DTextureImpl_1_Initialize,
 853     XCAST(GetHandle) Thunk_IDirect3DTextureImpl_1_GetHandle,
 854     XCAST(PaletteChanged) Thunk_IDirect3DTextureImpl_1_PaletteChanged,
 855     XCAST(Load) Thunk_IDirect3DTextureImpl_1_Load,
 856     XCAST(Unload) Main_IDirect3DTextureImpl_1_Unload,
 857 };
 858
 859 #if !defined(__STRICT_ANSI__) && defined(__GNUC__)
 860 #undef XCAST
 861 #endif
 862
 863 HRESULT d3dtexture_create(IDirectDrawImpl *d3d, IDirectDrawSurfaceImpl *surf, BOOLEAN at_creation,
 864                           IDirectDrawSurfaceImpl *main)
 865 {
 866     /* First, initialize the texture vtables... */
 867     ICOM_INIT_INTERFACE(surf, IDirect3DTexture,  VTABLE_IDirect3DTexture);
 868     ICOM_INIT_INTERFACE(surf, IDirect3DTexture2, VTABLE_IDirect3DTexture2);
 869
 870     /* Only create all the private stuff if we actually have an OpenGL context.. */
 871     if (d3d->current_device != NULL) {
 872         IDirect3DTextureGLImpl *private;
 873
 874         private = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(IDirect3DTextureGLImpl));
 875         if (private == NULL) return DDERR_OUTOFMEMORY;
 876
 877         surf->tex_private = private;
 878
 879         private->final_release = surf->final_release;
 880         private->lock_update = surf->lock_update;
 881         private->unlock_update = surf->unlock_update;
 882         private->set_palette = surf->set_palette;
 883
 884         /* If at creation, we can optimize stuff and wait the first 'unlock' to upload a valid stuff to OpenGL.
 885            Otherwise, it will be uploaded here (and may be invalid). */
 886         surf->final_release = gltex_final_release;
 887         surf->lock_update = gltex_lock_update;
 888         surf->unlock_update = gltex_unlock_update;
 889         surf->aux_setcolorkey_cb = gltex_setcolorkey_cb;
 890         surf->set_palette = gltex_set_palette;
 891
 892         /* We are the only one to use the aux_blt and aux_bltfast overrides, so no need
 893            to save those... */
 894         surf->aux_blt = gltex_blt;
 895         surf->aux_bltfast = gltex_bltfast;
 896
 897         TRACE(" GL texture created for surface %p (private data at %p)\n", surf, private);
 898
 899         /* Do not create the OpenGL texture id here as some game generate textures from a different thread which
 900             cause problems.. */
 901         private->tex_name = 0;
 902         if (surf->mipmap_level == 0) {
 903             private->main = NULL;
 904             private->global_dirty_flag = &(private->__global_dirty_flag);
 905         } else {
 906             private->main = main;
 907             private->global_dirty_flag = &(((IDirect3DTextureGLImpl *) (private->main->tex_private))->__global_dirty_flag);
 908         }
 909         private->initial_upload_done = FALSE;
 910     }
 911
 912     return D3D_OK;
 913 }
 914
 915 GLuint gltex_get_tex_name(IDirectDrawSurfaceImpl *surf)
 916 {
 917     IDirect3DTextureGLImpl *private = (IDirect3DTextureGLImpl *) (surf->tex_private);
 918
 919     if (private->tex_name == 0) {
 920         /* The texture was not created yet... */
 921         ENTER_GL();
 922         if (surf->mipmap_level == 0) {
 923             glGenTextures(1, &(private->tex_name));
 924             if (private->tex_name == 0) ERR("Error at creation of OpenGL texture ID !\n");
 925             TRACE(" GL texture id is : %d.\n", private->tex_name);
 926             private->__global_dirty_flag = SURFACE_MEMORY_DIRTY;
 927         } else {
 928             private->tex_name = gltex_get_tex_name(private->main);
 929             TRACE(" GL texture id reusing id %d from surface %p (private at %p)).\n", private->tex_name, private->main, private->main->tex_private);
 930         }
 931         LEAVE_GL();
 932
 933         /* And set the dirty flag accordingly */
 934         private->dirty_flag = SURFACE_MEMORY_DIRTY;
 935     }
 936     return ((IDirect3DTextureGLImpl *) (surf->tex_private))->tex_name;
 937 }