git.oblomov.eu Git - wine/blob - dlls/ddraw/opengl_utils.c

   1 /* Direct3D Common functions
   2  * Copyright (c) 1998 Lionel ULMER
   3  *
   4  * This file contains all MESA common code
   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
  25 #define NONAMELESSUNION
  26 #define NONAMELESSSTRUCT
  27 #include "windef.h"
  28 #include "winbase.h"
  29 #include "objbase.h"
  30 #include "wingdi.h"
  31 #include "ddraw.h"
  32 #include "d3d.h"
  33 #include "wine/debug.h"
  34
  35 #include "opengl_private.h"
  36
  37 WINE_DEFAULT_DEBUG_CHANNEL(ddraw);
  38
  39 GLenum convert_D3D_compare_to_GL(D3DCMPFUNC dwRenderState)
  40 {
  41     switch (dwRenderState) {
  42         case D3DCMP_NEVER: return GL_NEVER;
  43         case D3DCMP_LESS: return GL_LESS;
  44         case D3DCMP_EQUAL: return GL_EQUAL;
  45         case D3DCMP_LESSEQUAL: return GL_LEQUAL;
  46         case D3DCMP_GREATER: return GL_GREATER;
  47         case D3DCMP_NOTEQUAL: return GL_NOTEQUAL;
  48         case D3DCMP_GREATEREQUAL: return GL_GEQUAL;
  49         case D3DCMP_ALWAYS: return GL_ALWAYS;
  50         default: ERR("Unexpected compare type %d !\n", dwRenderState);
  51     }
  52     return GL_ALWAYS;
  53 }
  54
  55 GLenum convert_D3D_stencilop_to_GL(D3DSTENCILOP dwRenderState)
  56 {
  57     switch (dwRenderState) {
  58         case D3DSTENCILOP_KEEP: return GL_KEEP;
  59         case D3DSTENCILOP_ZERO: return GL_ZERO;
  60         case D3DSTENCILOP_REPLACE: return GL_REPLACE;
  61         case D3DSTENCILOP_INCRSAT: return GL_INCR;
  62         case D3DSTENCILOP_DECRSAT: return GL_DECR;
  63         case D3DSTENCILOP_INVERT: return GL_INVERT;
  64         case D3DSTENCILOP_INCR: WARN("D3DSTENCILOP_INCR not properly handled !\n"); return GL_INCR;
  65         case D3DSTENCILOP_DECR: WARN("D3DSTENCILOP_DECR not properly handled !\n"); return GL_DECR;
  66         default: ERR("Unexpected compare type %d !\n", dwRenderState);
  67     }
  68     return GL_KEEP;
  69 }
  70
  71 GLenum convert_D3D_blendop_to_GL(D3DBLEND dwRenderState)
  72 {
  73     switch ((D3DBLEND) dwRenderState) {
  74         case D3DBLEND_ZERO: return GL_ZERO;
  75         case D3DBLEND_ONE: return GL_ONE;
  76         case D3DBLEND_SRCALPHA: return GL_SRC_ALPHA;
  77         case D3DBLEND_INVSRCALPHA: return GL_ONE_MINUS_SRC_ALPHA;
  78         case D3DBLEND_DESTALPHA: return GL_DST_ALPHA;
  79         case D3DBLEND_INVDESTALPHA: return GL_ONE_MINUS_DST_ALPHA;
  80         case D3DBLEND_DESTCOLOR: return GL_DST_COLOR;
  81         case D3DBLEND_INVDESTCOLOR: return GL_ONE_MINUS_DST_COLOR;
  82         case D3DBLEND_SRCALPHASAT: return GL_SRC_ALPHA_SATURATE;
  83         case D3DBLEND_SRCCOLOR: return GL_SRC_COLOR;
  84         case D3DBLEND_INVSRCCOLOR: return GL_ONE_MINUS_SRC_COLOR;
  85         default: ERR("Unhandled blend mode %d !\n", dwRenderState); return GL_ZERO;
  86     }
  87 }
  88
  89 void set_render_state(IDirect3DDeviceImpl* This,
  90                       D3DRENDERSTATETYPE dwRenderStateType, STATEBLOCK *lpStateBlock)
  91 {
  92     DWORD dwRenderState = lpStateBlock->render_state[dwRenderStateType - 1];
  93     IDirect3DDeviceGLImpl *glThis = (IDirect3DDeviceGLImpl *) This;
  94
  95     TRACE("%s = %08lx\n", _get_renderstate(dwRenderStateType), dwRenderState);
  96
  97     /* First, all the stipple patterns */
  98     if ((dwRenderStateType >= D3DRENDERSTATE_STIPPLEPATTERN00) &&
  99         (dwRenderStateType <= D3DRENDERSTATE_STIPPLEPATTERN31)) {
 100         ERR("Unhandled dwRenderStateType stipple %d!\n",dwRenderStateType);
 101     } else {
 102         ENTER_GL();
 103
 104         /* All others state variables */
 105         switch (dwRenderStateType) {
 106             case D3DRENDERSTATE_TEXTUREHANDLE: {    /*  1 */
 107                 IDirectDrawSurfaceImpl *tex = (IDirectDrawSurfaceImpl*) dwRenderState;
 108
 109                 IDirect3DDevice7_SetTexture(ICOM_INTERFACE(This, IDirect3DDevice7),
 110                                             0,
 111                                             ICOM_INTERFACE(tex, IDirectDrawSurface7));
 112             } break;
 113
 114             case D3DRENDERSTATE_ANTIALIAS:        /*  2 */
 115                 if (dwRenderState)
 116                     ERR("D3DRENDERSTATE_ANTIALIAS not supported yet !\n");
 117                 break;
 118
 119             case D3DRENDERSTATE_TEXTUREADDRESSU:  /* 44 */
 120             case D3DRENDERSTATE_TEXTUREADDRESSV:  /* 45 */
 121             case D3DRENDERSTATE_TEXTUREADDRESS: { /*  3 */
 122                 D3DTEXTURESTAGESTATETYPE d3dTexStageStateType;
 123
 124                 if (dwRenderStateType == D3DRENDERSTATE_TEXTUREADDRESS) d3dTexStageStateType = D3DTSS_ADDRESS;
 125                 else if (dwRenderStateType == D3DRENDERSTATE_TEXTUREADDRESSU) d3dTexStageStateType = D3DTSS_ADDRESSU;
 126                 else d3dTexStageStateType = D3DTSS_ADDRESSV;
 127
 128                 IDirect3DDevice7_SetTextureStageState(ICOM_INTERFACE(This, IDirect3DDevice7),
 129                                                       0, d3dTexStageStateType,
 130                                                       dwRenderState);
 131             } break;
 132
 133             case D3DRENDERSTATE_TEXTUREPERSPECTIVE: /* 4 */
 134                 if (dwRenderState)
 135                     glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
 136                 else
 137                     glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_FASTEST);
 138                 break;
 139
 140             case D3DRENDERSTATE_WRAPU: /* 5 */
 141             case D3DRENDERSTATE_WRAPV: /* 6 */
 142             case D3DRENDERSTATE_WRAP0: /* 128 */
 143             case D3DRENDERSTATE_WRAP1: /* 129 */
 144             case D3DRENDERSTATE_WRAP2: /* 130 */
 145             case D3DRENDERSTATE_WRAP3: /* 131 */
 146             case D3DRENDERSTATE_WRAP4: /* 132 */
 147             case D3DRENDERSTATE_WRAP5: /* 133 */
 148             case D3DRENDERSTATE_WRAP6: /* 134 */
 149             case D3DRENDERSTATE_WRAP7: /* 135 */
 150                 if (dwRenderState)
 151                     ERR("Texture WRAP modes unsupported by OpenGL.. Expect graphical glitches !\n");
 152                 break;
 153
 154             case D3DRENDERSTATE_ZENABLE:          /*  7 */
 155                 /* To investigate : in OpenGL, if we disable the depth test, the Z buffer will NOT be
 156                    updated either.. No idea about what happens in D3D.
 157
 158                    Maybe replacing the Z function by ALWAYS would be a better idea. */
 159                 if (dwRenderState == D3DZB_TRUE) {
 160                     if (glThis->depth_test == FALSE) {
 161                         glEnable(GL_DEPTH_TEST);
 162                         glThis->depth_test = TRUE;
 163                     }
 164                 } else if (dwRenderState == D3DZB_FALSE) {
 165                     if (glThis->depth_test) {
 166                         glDisable(GL_DEPTH_TEST);
 167                         glThis->depth_test = FALSE;
 168                     }
 169                 } else {
 170                     if (glThis->depth_test == FALSE) {
 171                         glEnable(GL_DEPTH_TEST);
 172                         glThis->depth_test = TRUE;
 173                     }
 174                     WARN(" w-buffering not supported.\n");
 175                 }
 176                 break;
 177
 178             case D3DRENDERSTATE_FILLMODE:           /*  8 */
 179                 switch ((D3DFILLMODE) dwRenderState) {
 180                     case D3DFILL_POINT:
 181                         glPolygonMode(GL_FRONT_AND_BACK,GL_POINT);
 182                         break;
 183                     case D3DFILL_WIREFRAME:
 184                         glPolygonMode(GL_FRONT_AND_BACK,GL_LINE);
 185                         break;
 186                     case D3DFILL_SOLID:
 187                         glPolygonMode(GL_FRONT_AND_BACK,GL_FILL);
 188                         break;
 189                     default:
 190                         ERR("Unhandled fill mode %ld !\n",dwRenderState);
 191                  }
 192                  break;
 193
 194             case D3DRENDERSTATE_SHADEMODE:          /*  9 */
 195                 switch ((D3DSHADEMODE) dwRenderState) {
 196                     case D3DSHADE_FLAT:
 197                         glShadeModel(GL_FLAT);
 198                         break;
 199                     case D3DSHADE_GOURAUD:
 200                         glShadeModel(GL_SMOOTH);
 201                         break;
 202                     default:
 203                         ERR("Unhandled shade mode %ld !\n",dwRenderState);
 204                 }
 205                 break;
 206
 207             case D3DRENDERSTATE_ZWRITEENABLE:     /* 14 */
 208                 if ((dwRenderState != FALSE) && (glThis->depth_mask == FALSE))
 209                     glDepthMask(GL_TRUE);
 210                 else if ((dwRenderState == FALSE) && (glThis->depth_mask != FALSE))
 211                     glDepthMask(GL_FALSE);
 212                 glThis->depth_mask = dwRenderState;
 213                 break;
 214
 215             case D3DRENDERSTATE_ALPHATESTENABLE:  /* 15 */
 216                 if ((dwRenderState != 0) && (glThis->alpha_test == FALSE))
 217                     glEnable(GL_ALPHA_TEST);
 218                 else if ((dwRenderState == 0) && (glThis->alpha_test != FALSE))
 219                     glDisable(GL_ALPHA_TEST);
 220                 glThis->alpha_test = dwRenderState;
 221                 break;
 222
 223             case D3DRENDERSTATE_TEXTUREMAG: {     /* 17 */
 224                 DWORD tex_mag = 0xFFFFFFFF;
 225
 226                 switch ((D3DTEXTUREFILTER) dwRenderState) {
 227                     case D3DFILTER_NEAREST:
 228                         tex_mag = D3DTFG_POINT;
 229                         break;
 230                     case D3DFILTER_LINEAR:
 231                         tex_mag = D3DTFG_LINEAR;
 232                         break;
 233                     default:
 234                         ERR("Unhandled texture mag %ld !\n",dwRenderState);
 235                 }
 236
 237                 if (tex_mag != 0xFFFFFFFF) {
 238                     IDirect3DDevice7_SetTextureStageState(ICOM_INTERFACE(This, IDirect3DDevice7), 0, D3DTSS_MAGFILTER, tex_mag);
 239                 }
 240             } break;
 241
 242             case D3DRENDERSTATE_TEXTUREMIN: {       /* 18 */
 243                 DWORD tex_min = 0xFFFFFFFF;
 244
 245                 switch ((D3DTEXTUREFILTER) dwRenderState) {
 246                     case D3DFILTER_NEAREST:
 247                         tex_min = D3DTFN_POINT;
 248                         break;
 249                     case D3DFILTER_LINEAR:
 250                         tex_min = D3DTFN_LINEAR;
 251                         break;
 252                     default:
 253                         ERR("Unhandled texture min %ld !\n",dwRenderState);
 254                 }
 255
 256                 if (tex_min != 0xFFFFFFFF) {
 257                     IDirect3DDevice7_SetTextureStageState(ICOM_INTERFACE(This, IDirect3DDevice7), 0, D3DTSS_MINFILTER, tex_min);
 258                 }
 259             } break;
 260
 261             case D3DRENDERSTATE_SRCBLEND:           /* 19 */
 262             case D3DRENDERSTATE_DESTBLEND:          /* 20 */
 263                 glBlendFunc(convert_D3D_blendop_to_GL(lpStateBlock->render_state[D3DRENDERSTATE_SRCBLEND - 1]),
 264                             convert_D3D_blendop_to_GL(lpStateBlock->render_state[D3DRENDERSTATE_DESTBLEND - 1]));
 265                 break;
 266
 267             case D3DRENDERSTATE_TEXTUREMAPBLEND: {  /* 21 */
 268                 IDirect3DDevice7 *d3ddev = ICOM_INTERFACE(This, IDirect3DDevice7);
 269
 270                 switch ((D3DTEXTUREBLEND) dwRenderState) {
 271                     case D3DTBLEND_DECAL:
 272                         if (glThis->current_tex_env != GL_REPLACE) {
 273                             glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
 274                             glThis->current_tex_env = GL_REPLACE;
 275                         }
 276                         break;
 277                     case D3DTBLEND_DECALALPHA:
 278                         if (glThis->current_tex_env != GL_REPLACE) {
 279                             glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL);
 280                             glThis->current_tex_env = GL_DECAL;
 281                         }
 282                         break;
 283                     case D3DTBLEND_MODULATE:
 284                         if (glThis->current_tex_env != GL_MODULATE) {
 285                             glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
 286                             glThis->current_tex_env = GL_MODULATE;
 287                         }
 288                         break;
 289                     case D3DTBLEND_MODULATEALPHA:
 290                         IDirect3DDevice7_SetTextureStageState(d3ddev, 0, D3DTSS_COLORARG1, D3DTA_TEXTURE);
 291                         IDirect3DDevice7_SetTextureStageState(d3ddev, 0, D3DTSS_ALPHAARG1, D3DTA_TEXTURE);
 292                         IDirect3DDevice7_SetTextureStageState(d3ddev, 0, D3DTSS_COLORARG2, D3DTA_CURRENT);
 293                         IDirect3DDevice7_SetTextureStageState(d3ddev, 0, D3DTSS_ALPHAARG2, D3DTA_CURRENT);
 294                         IDirect3DDevice7_SetTextureStageState(d3ddev, 0, D3DTSS_COLOROP, D3DTOP_MODULATE);
 295                         IDirect3DDevice7_SetTextureStageState(d3ddev, 0, D3DTSS_ALPHAOP, D3DTOP_MODULATE);
 296                         break;
 297                     default:
 298                         ERR("Unhandled texture environment %ld !\n",dwRenderState);
 299                 }
 300             } break;
 301
 302             case D3DRENDERSTATE_CULLMODE:           /* 22 */
 303                 switch ((D3DCULL) dwRenderState) {
 304                     case D3DCULL_NONE:
 305                          if (glThis->cull_face != 0) {
 306                              glDisable(GL_CULL_FACE);
 307                              glThis->cull_face = 0;
 308                          }
 309                          break;
 310                     case D3DCULL_CW:
 311                          if (glThis->cull_face == 0) {
 312                              glEnable(GL_CULL_FACE);
 313                              glThis->cull_face = 1;
 314                          }
 315                          glFrontFace(GL_CCW);
 316                          glCullFace(GL_BACK);
 317                          break;
 318                     case D3DCULL_CCW:
 319                          if (glThis->cull_face == 0) {
 320                              glEnable(GL_CULL_FACE);
 321                              glThis->cull_face = 1;
 322                          }
 323                          glFrontFace(GL_CW);
 324                          glCullFace(GL_BACK);
 325                          break;
 326                     default:
 327                          ERR("Unhandled cull mode %ld !\n",dwRenderState);
 328                 }
 329                 break;
 330
 331             case D3DRENDERSTATE_ZFUNC:            /* 23 */
 332                 glDepthFunc(convert_D3D_compare_to_GL(dwRenderState));
 333                 break;
 334
 335             case D3DRENDERSTATE_ALPHAREF:    /* 24 */
 336             case D3DRENDERSTATE_ALPHAFUNC: { /* 25 */
 337                     GLenum func = convert_D3D_compare_to_GL(lpStateBlock->render_state[D3DRENDERSTATE_ALPHAFUNC - 1]);
 338                     GLclampf ref = (lpStateBlock->render_state[D3DRENDERSTATE_ALPHAREF - 1] & 0x000000FF) / 255.0;
 339
 340                     if ((func != glThis->current_alpha_test_func) || (ref != glThis->current_alpha_test_ref)) {
 341                         glAlphaFunc(func, ref);
 342                         glThis->current_alpha_test_func = func;
 343                         glThis->current_alpha_test_ref = ref;
 344                     }
 345                 }
 346                 break;
 347
 348             case D3DRENDERSTATE_DITHERENABLE:     /* 26 */
 349                 if (dwRenderState)
 350                     glEnable(GL_DITHER);
 351                 else
 352                     glDisable(GL_DITHER);
 353                 break;
 354
 355             case D3DRENDERSTATE_ALPHABLENDENABLE:   /* 27 */
 356                 if ((dwRenderState != 0) && (glThis->blending == 0)) {
 357                     glEnable(GL_BLEND);
 358                 } else if ((dwRenderState == 0) && (glThis->blending != 0)) {
 359                     glDisable(GL_BLEND);
 360                 }
 361                 glThis->blending = dwRenderState;
 362
 363                 /* Hack for some old games ... */
 364                 if (glThis->parent.version == 1) {
 365                     lpStateBlock->render_state[D3DRENDERSTATE_COLORKEYENABLE - 1] = dwRenderState;
 366                 }
 367                 break;
 368
 369             case D3DRENDERSTATE_FOGENABLE: /* 28 */
 370                 /* Nothing to do here. Only the storage matters :-) */
 371                 break;
 372
 373             case D3DRENDERSTATE_SPECULARENABLE: /* 29 */
 374                 if (dwRenderState)
 375                     ERR(" Specular Lighting not supported yet.\n");
 376                 break;
 377
 378             case D3DRENDERSTATE_SUBPIXEL:  /* 31 */
 379             case D3DRENDERSTATE_SUBPIXELX: /* 32 */
 380                 /* We do not support this anyway, so why protest :-) */
 381                 break;
 382
 383             case D3DRENDERSTATE_STIPPLEDALPHA: /* 33 */
 384                 if (dwRenderState)
 385                     ERR(" Stippled Alpha not supported yet.\n");
 386                 break;
 387
 388             case D3DRENDERSTATE_FOGCOLOR: { /* 34 */
 389                 GLfloat color[4];
 390                 color[0] = ((dwRenderState >> 16) & 0xFF)/255.0f;
 391                 color[1] = ((dwRenderState >>  8) & 0xFF)/255.0f;
 392                 color[2] = ((dwRenderState >>  0) & 0xFF)/255.0f;
 393                 color[3] = ((dwRenderState >> 24) & 0xFF)/255.0f;
 394                 glFogfv(GL_FOG_COLOR,color);
 395                 /* Note: glFogiv does not seem to work */
 396             } break;
 397
 398             case D3DRENDERSTATE_FOGTABLEMODE:  /* 35 */
 399             case D3DRENDERSTATE_FOGVERTEXMODE: /* 140 */
 400             case D3DRENDERSTATE_FOGSTART:      /* 36 */
 401             case D3DRENDERSTATE_FOGEND:        /* 37 */
 402                 /* Nothing to do here. Only the storage matters :-) */
 403                 break;
 404
 405             case D3DRENDERSTATE_FOGDENSITY:    /* 38 */
 406                 glFogi(GL_FOG_DENSITY,*(float*)&dwRenderState);
 407                 break;
 408
 409             case D3DRENDERSTATE_COLORKEYENABLE:     /* 41 */
 410                 /* Nothing done here, only storage matters. */
 411                 break;
 412
 413             case D3DRENDERSTATE_MIPMAPLODBIAS: /* 46 */
 414                 IDirect3DDevice7_SetTextureStageState(ICOM_INTERFACE(This, IDirect3DDevice7),
 415                                                       0, D3DTSS_MIPMAPLODBIAS,
 416                                                       dwRenderState);
 417                 break;
 418
 419             case D3DRENDERSTATE_ZBIAS: /* 47 */
 420                 /* This is a tad bit hacky.. But well, no idea how to do it better in OpenGL :-/ */
 421                 if (dwRenderState == 0) {
 422                     glDisable(GL_POLYGON_OFFSET_FILL);
 423                     glDisable(GL_POLYGON_OFFSET_LINE);
 424                     glDisable(GL_POLYGON_OFFSET_POINT);
 425                 } else {
 426                     glEnable(GL_POLYGON_OFFSET_FILL);
 427                     glEnable(GL_POLYGON_OFFSET_LINE);
 428                     glEnable(GL_POLYGON_OFFSET_POINT);
 429                     glPolygonOffset(1.0, dwRenderState * 1.0);
 430                 }
 431                 break;
 432
 433             case D3DRENDERSTATE_FLUSHBATCH:         /* 50 */
 434                 break;
 435
 436             case D3DRENDERSTATE_STENCILENABLE:    /* 52 */
 437                 if ((dwRenderState != 0) && (glThis->stencil_test == 0))
 438                     glEnable(GL_STENCIL_TEST);
 439                 else if ((dwRenderState == 0) && (glThis->stencil_test != 0))
 440                     glDisable(GL_STENCIL_TEST);
 441                 glThis->stencil_test = dwRenderState;
 442                 break;
 443
 444             case D3DRENDERSTATE_STENCILFAIL:      /* 53 */
 445             case D3DRENDERSTATE_STENCILZFAIL:     /* 54 */
 446             case D3DRENDERSTATE_STENCILPASS:      /* 55 */
 447                 glStencilOp(convert_D3D_stencilop_to_GL(lpStateBlock->render_state[D3DRENDERSTATE_STENCILFAIL - 1]),
 448                             convert_D3D_stencilop_to_GL(lpStateBlock->render_state[D3DRENDERSTATE_STENCILZFAIL - 1]),
 449                             convert_D3D_stencilop_to_GL(lpStateBlock->render_state[D3DRENDERSTATE_STENCILPASS - 1]));
 450                 break;
 451
 452             case D3DRENDERSTATE_STENCILFUNC:      /* 56 */
 453             case D3DRENDERSTATE_STENCILREF:       /* 57 */
 454             case D3DRENDERSTATE_STENCILMASK:      /* 58 */
 455                 glStencilFunc(convert_D3D_compare_to_GL(lpStateBlock->render_state[D3DRENDERSTATE_STENCILFUNC - 1]),
 456                               lpStateBlock->render_state[D3DRENDERSTATE_STENCILREF - 1],
 457                               lpStateBlock->render_state[D3DRENDERSTATE_STENCILMASK - 1]);
 458                 break;
 459
 460             case D3DRENDERSTATE_STENCILWRITEMASK: /* 59 */
 461                 glStencilMask(dwRenderState);
 462                 break;
 463
 464             case D3DRENDERSTATE_TEXTUREFACTOR:      /* 60 */
 465                 /* Only the storage matters... */
 466                 break;
 467
 468             case D3DRENDERSTATE_CLIPPING:          /* 136 */
 469             case D3DRENDERSTATE_CLIPPLANEENABLE: { /* 152 */
 470                     GLint i;
 471                     DWORD mask, runner;
 472
 473                     if (dwRenderStateType == D3DRENDERSTATE_CLIPPING) {
 474                         mask = ((dwRenderState) ?
 475                                 (This->state_block.render_state[D3DRENDERSTATE_CLIPPLANEENABLE - 1]) : (0x00000000));
 476                     } else {
 477                         mask = dwRenderState;
 478                     }
 479                     for (i = 0, runner = 0x00000001; i < This->max_clipping_planes; i++, runner = (runner << 1)) {
 480                         if (mask & runner) {
 481                             GLint enabled;
 482                             glGetIntegerv(GL_CLIP_PLANE0 + i, &enabled);
 483                             if (enabled == GL_FALSE) {
 484                                 glEnable(GL_CLIP_PLANE0 + i);
 485                                 /* Need to force a transform change so that this clipping plane parameters are sent
 486                                  * properly to GL.
 487                                  */
 488                                 glThis->transform_state = GL_TRANSFORM_NONE;
 489                             }
 490                         } else {
 491                             glDisable(GL_CLIP_PLANE0 + i);
 492                         }
 493                     }
 494                 }
 495                 break;
 496
 497             case D3DRENDERSTATE_LIGHTING:    /* 137 */
 498                 /* Nothing to do, only storage matters... */
 499                 break;
 500
 501             case D3DRENDERSTATE_AMBIENT: {            /* 139 */
 502                 float light[4];
 503
 504                 light[0] = ((dwRenderState >> 16) & 0xFF) / 255.0;
 505                 light[1] = ((dwRenderState >>  8) & 0xFF) / 255.0;
 506                 light[2] = ((dwRenderState >>  0) & 0xFF) / 255.0;
 507                 light[3] = ((dwRenderState >> 24) & 0xFF) / 255.0;
 508                 glLightModelfv(GL_LIGHT_MODEL_AMBIENT, (float *) light);
 509             } break;
 510
 511             case D3DRENDERSTATE_COLORVERTEX:          /* 141 */
 512                   /* Nothing to do here.. Only storage matters */
 513                   break;
 514
 515             case D3DRENDERSTATE_LOCALVIEWER:          /* 142 */
 516                 if (dwRenderState)
 517                     glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, GL_TRUE);
 518                 else
 519                     glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, GL_FALSE);
 520                 break;
 521
 522             case D3DRENDERSTATE_NORMALIZENORMALS:     /* 143 */
 523                 if (dwRenderState) {
 524                     glEnable(GL_NORMALIZE);
 525                     glEnable(GL_RESCALE_NORMAL);
 526                 } else {
 527                     glDisable(GL_NORMALIZE);
 528                     glDisable(GL_RESCALE_NORMAL);
 529                 }
 530                 break;
 531
 532             case D3DRENDERSTATE_DIFFUSEMATERIALSOURCE:    /* 145 */
 533             case D3DRENDERSTATE_SPECULARMATERIALSOURCE:   /* 146 */
 534             case D3DRENDERSTATE_AMBIENTMATERIALSOURCE:    /* 147 */
 535             case D3DRENDERSTATE_EMISSIVEMATERIALSOURCE:   /* 148 */
 536                 /* Nothing to do here. Only the storage matters :-) */
 537                 break;
 538
 539             default:
 540                 ERR("Unhandled dwRenderStateType %s (%08x) value : %08lx !\n",
 541                     _get_renderstate(dwRenderStateType), dwRenderStateType, dwRenderState);
 542         }
 543         LEAVE_GL();
 544     }
 545 }
 546
 547 void store_render_state(IDirect3DDeviceImpl *This,
 548                         D3DRENDERSTATETYPE dwRenderStateType, DWORD dwRenderState, STATEBLOCK *lpStateBlock)
 549 {
 550     TRACE("%s = %08lx\n", _get_renderstate(dwRenderStateType), dwRenderState);
 551
 552     /* Some special cases first.. */
 553     if (dwRenderStateType == D3DRENDERSTATE_SRCBLEND) {
 554         if (dwRenderState == D3DBLEND_BOTHSRCALPHA) {
 555             lpStateBlock->render_state[D3DRENDERSTATE_SRCBLEND - 1] = D3DBLEND_SRCALPHA;
 556             lpStateBlock->render_state[D3DRENDERSTATE_DESTBLEND - 1] = D3DBLEND_INVSRCALPHA;
 557             return;
 558         } else if (dwRenderState == D3DBLEND_BOTHINVSRCALPHA) {
 559             lpStateBlock->render_state[D3DRENDERSTATE_SRCBLEND - 1] = D3DBLEND_INVSRCALPHA;
 560             lpStateBlock->render_state[D3DRENDERSTATE_DESTBLEND - 1] = D3DBLEND_SRCALPHA;
 561             return;
 562         }
 563     } else if (dwRenderStateType == D3DRENDERSTATE_TEXTUREADDRESS) {
 564         lpStateBlock->render_state[D3DRENDERSTATE_TEXTUREADDRESSU - 1] = dwRenderState;
 565         lpStateBlock->render_state[D3DRENDERSTATE_TEXTUREADDRESSV - 1] = dwRenderState;
 566     } else if (dwRenderStateType == D3DRENDERSTATE_WRAPU) {
 567         if (dwRenderState)
 568             lpStateBlock->render_state[D3DRENDERSTATE_WRAP0] |= D3DWRAP_U;
 569         else
 570             lpStateBlock->render_state[D3DRENDERSTATE_WRAP0] &= ~D3DWRAP_U;
 571     } else if (dwRenderStateType == D3DRENDERSTATE_WRAPV) {
 572         if (dwRenderState)
 573             lpStateBlock->render_state[D3DRENDERSTATE_WRAP0] |= D3DWRAP_V;
 574         else
 575             lpStateBlock->render_state[D3DRENDERSTATE_WRAP0] &= ~D3DWRAP_V;
 576     }
 577
 578     /* Default case */
 579     lpStateBlock->render_state[dwRenderStateType - 1] = dwRenderState;
 580 }
 581
 582 void get_render_state(IDirect3DDeviceImpl *This,
 583                       D3DRENDERSTATETYPE dwRenderStateType, LPDWORD lpdwRenderState, STATEBLOCK *lpStateBlock)
 584 {
 585     *lpdwRenderState = lpStateBlock->render_state[dwRenderStateType - 1];
 586     if (TRACE_ON(ddraw))
 587         TRACE("%s = %08lx\n", _get_renderstate(dwRenderStateType), *lpdwRenderState);
 588 }
 589
 590 void apply_render_state(IDirect3DDeviceImpl *This, STATEBLOCK *lpStateBlock)
 591 {
 592     DWORD i;
 593     TRACE("(%p,%p)\n", This, lpStateBlock);
 594     for(i = 0; i < HIGHEST_RENDER_STATE; i++)
 595         if (lpStateBlock->set_flags.render_state[i])
 596             set_render_state(This, i + 1, lpStateBlock);
 597 }
 598
 599
 600 /* Texture management code.
 601
 602     - upload_surface_to_tex_memory_init initialize the code and computes the GL formats
 603       according to the surface description.
 604
 605     - upload_surface_to_tex_memory does the real upload. If one buffer is split over
 606       multiple textures, this can be called multiple times after the '_init' call. 'rect'
 607       can be NULL if the whole buffer needs to be upload.
 608
 609     - upload_surface_to_tex_memory_release does the clean-up.
 610
 611    These functions are called in the following cases :
 612     - texture management (ie to upload a D3D texture to GL when it changes).
 613     - flush of the 'in-memory' frame buffer to the GL frame buffer using the texture
 614       engine.
 615     - use of the texture engine to simulate Blits to the 3D Device.
 616 */
 617 typedef enum {
 618     NO_CONVERSION,
 619     CONVERT_PALETTED,
 620     CONVERT_CK_565,
 621     CONVERT_CK_5551,
 622     CONVERT_CK_4444,
 623     CONVERT_CK_4444_ARGB,
 624     CONVERT_CK_1555,
 625     CONVERT_555,
 626     CONVERT_CK_RGB24,
 627     CONVERT_CK_8888,
 628     CONVERT_CK_8888_ARGB,
 629     CONVERT_RGB32_888
 630 } CONVERT_TYPES;
 631
 632 /* Note : we suppose that all the code calling this is protected by the GL lock... Otherwise bad things
 633    may happen :-) */
 634 static GLenum current_format;
 635 static GLenum current_pixel_format;
 636 static CONVERT_TYPES convert_type;
 637 static IDirectDrawSurfaceImpl *current_surface;
 638 static GLuint current_level;
 639 static DWORD current_tex_width;
 640 static DWORD current_tex_height;
 641 static GLuint current_alignement_constraints;
 642 static int current_storage_width;
 643
 644 HRESULT upload_surface_to_tex_memory_init(IDirectDrawSurfaceImpl *surf_ptr, GLuint level, GLenum *current_internal_format,
 645                                           BOOLEAN need_to_alloc, BOOLEAN need_alpha_ck, DWORD tex_width, DWORD tex_height)
 646 {
 647     const DDPIXELFORMAT * const src_pf = &(surf_ptr->surface_desc.u4.ddpfPixelFormat);
 648     BOOL error = FALSE;
 649     BOOL colorkey_active = need_alpha_ck && (surf_ptr->surface_desc.dwFlags & DDSD_CKSRCBLT);
 650     GLenum internal_format = GL_LUMINANCE; /* A bogus value to be sure to have a nice Mesa warning :-) */
 651     BYTE bpp = GET_BPP(surf_ptr->surface_desc);
 652     BOOL sub_texture = TRUE;
 653
 654     current_surface = surf_ptr;
 655     current_level = level;
 656
 657     if (src_pf->dwFlags & DDPF_FOURCC) {
 658         GLenum retVal;
 659         int size = surf_ptr->surface_desc.u1.dwLinearSize;
 660         int width = surf_ptr->surface_desc.dwWidth;
 661         int height = surf_ptr->surface_desc.dwHeight;
 662         LPVOID buffer = surf_ptr->surface_desc.lpSurface;
 663
 664         switch (src_pf->dwFourCC) {
 665             case MAKE_FOURCC('D','X','T','1'): retVal = GL_COMPRESSED_RGBA_S3TC_DXT1_EXT; break;
 666             case MAKE_FOURCC('D','X','T','3'): retVal = GL_COMPRESSED_RGBA_S3TC_DXT3_EXT; break;
 667             case MAKE_FOURCC('D','X','T','5'): retVal = GL_COMPRESSED_RGBA_S3TC_DXT5_EXT; break;
 668             default:
 669                 FIXME("FourCC Not supported\n");
 670                 return DD_OK;
 671         }
 672
 673         if (GL_extensions.s3tc_compressed_texture) {
 674             GL_extensions.glCompressedTexImage2D(GL_TEXTURE_2D, current_level, retVal, width, height, 0, size, buffer);
 675         } else
 676             ERR("Trying to upload S3TC texture whereas the device does not have support for it\n");
 677
 678         return DD_OK;
 679     }
 680
 681     /* First, do some sanity checks ... */
 682     if ((surf_ptr->surface_desc.u1.lPitch % bpp) != 0) {
 683         FIXME("Warning : pitch is not a multiple of BPP - not supported yet !\n");
 684     } else {
 685         /* In that case, no need to have any alignement constraints... */
 686         if (current_alignement_constraints != 1) {
 687             glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
 688             current_alignement_constraints = 1;
 689         }
 690     }
 691
 692     /* Note: we only check width here as you cannot have width non-zero while height is set to zero */
 693     if (tex_width == 0) {
 694         sub_texture = FALSE;
 695
 696         tex_width = surf_ptr->surface_desc.dwWidth;
 697         tex_height = surf_ptr->surface_desc.dwHeight;
 698     }
 699
 700     current_tex_width = tex_width;
 701     current_tex_height = tex_height;
 702
 703     if (src_pf->dwFlags & DDPF_PALETTEINDEXED8) {
 704         /* ****************
 705            Paletted Texture
 706            **************** */
 707         current_format = GL_RGBA;
 708         internal_format = GL_RGBA;
 709         current_pixel_format = GL_UNSIGNED_BYTE;
 710         convert_type = CONVERT_PALETTED;
 711     } else if (src_pf->dwFlags & DDPF_RGB) {
 712         /* ************
 713            RGB Textures
 714            ************ */
 715         if (src_pf->u1.dwRGBBitCount == 8) {
 716             if ((src_pf->dwFlags & DDPF_ALPHAPIXELS) &&
 717                 (src_pf->u5.dwRGBAlphaBitMask != 0x00)) {
 718                 error = TRUE;
 719             } else {
 720                 if ((src_pf->u2.dwRBitMask == 0xE0) &&
 721                     (src_pf->u3.dwGBitMask == 0x1C) &&
 722                     (src_pf->u4.dwBBitMask == 0x03)) {
 723                     /* **********************
 724                        GL_UNSIGNED_BYTE_3_3_2
 725                        ********************** */
 726                     if (colorkey_active) {
 727                         /* This texture format will never be used.. So do not care about color keying
 728                            up until the point in time it will be needed :-) */
 729                         FIXME(" ColorKeying not supported in the RGB 332 format !\n");
 730                     }
 731                     current_format = GL_RGB;
 732                     internal_format = GL_RGB;
 733                     current_pixel_format = GL_UNSIGNED_BYTE_3_3_2;
 734                     convert_type = NO_CONVERSION;
 735                 } else {
 736                     error = TRUE;
 737                 }
 738             }
 739         } else if (src_pf->u1.dwRGBBitCount == 16) {
 740             if ((src_pf->dwFlags & DDPF_ALPHAPIXELS) &&
 741                 (src_pf->u5.dwRGBAlphaBitMask != 0x0000)) {
 742                 if ((src_pf->u2.dwRBitMask ==        0xF800) &&
 743                     (src_pf->u3.dwGBitMask ==        0x07C0) &&
 744                     (src_pf->u4.dwBBitMask ==        0x003E) &&
 745                     (src_pf->u5.dwRGBAlphaBitMask == 0x0001)) {
 746                     current_format = GL_RGBA;
 747                     internal_format = GL_RGBA;
 748                     current_pixel_format = GL_UNSIGNED_SHORT_5_5_5_1;
 749                     if (colorkey_active) {
 750                         convert_type = CONVERT_CK_5551;
 751                     } else {
 752                         convert_type = NO_CONVERSION;
 753                     }
 754                 } else if ((src_pf->u2.dwRBitMask ==        0xF000) &&
 755                            (src_pf->u3.dwGBitMask ==        0x0F00) &&
 756                            (src_pf->u4.dwBBitMask ==        0x00F0) &&
 757                            (src_pf->u5.dwRGBAlphaBitMask == 0x000F)) {
 758                     current_format = GL_RGBA;
 759                     internal_format = GL_RGBA;
 760                     current_pixel_format = GL_UNSIGNED_SHORT_4_4_4_4;
 761                     if (colorkey_active) {
 762                         convert_type = CONVERT_CK_4444;
 763                     } else {
 764                         convert_type = NO_CONVERSION;
 765                     }
 766                 } else if ((src_pf->u2.dwRBitMask ==        0x0F00) &&
 767                            (src_pf->u3.dwGBitMask ==        0x00F0) &&
 768                            (src_pf->u4.dwBBitMask ==        0x000F) &&
 769                            (src_pf->u5.dwRGBAlphaBitMask == 0xF000)) {
 770                     if (colorkey_active) {
 771                         convert_type = CONVERT_CK_4444_ARGB;
 772                         current_format = GL_RGBA;
 773                         internal_format = GL_RGBA;
 774                         current_pixel_format = GL_UNSIGNED_SHORT_4_4_4_4;
 775                     } else {
 776                         convert_type = NO_CONVERSION;
 777                         current_format = GL_BGRA;
 778                         internal_format = GL_RGBA;
 779                         current_pixel_format = GL_UNSIGNED_SHORT_4_4_4_4_REV;
 780                     }
 781                 } else if ((src_pf->u2.dwRBitMask ==        0x7C00) &&
 782                            (src_pf->u3.dwGBitMask ==        0x03E0) &&
 783                            (src_pf->u4.dwBBitMask ==        0x001F) &&
 784                            (src_pf->u5.dwRGBAlphaBitMask == 0x8000)) {
 785                     if (colorkey_active) {
 786                         convert_type = CONVERT_CK_1555;
 787                         current_format = GL_RGBA;
 788                         internal_format = GL_RGBA;
 789                         current_pixel_format = GL_UNSIGNED_SHORT_5_5_5_1;
 790                     } else {
 791                         convert_type = NO_CONVERSION;
 792                         current_format = GL_BGRA;
 793                         internal_format = GL_RGBA;
 794                         current_pixel_format = GL_UNSIGNED_SHORT_1_5_5_5_REV;
 795                     }
 796                 } else {
 797                     error = TRUE;
 798                 }
 799             } else {
 800                 if ((src_pf->u2.dwRBitMask == 0xF800) &&
 801                     (src_pf->u3.dwGBitMask == 0x07E0) &&
 802                     (src_pf->u4.dwBBitMask == 0x001F)) {
 803                     if (colorkey_active) {
 804                         convert_type = CONVERT_CK_565;
 805                         current_format = GL_RGBA;
 806                         internal_format = GL_RGBA;
 807                         current_pixel_format = GL_UNSIGNED_SHORT_5_5_5_1;
 808                     } else {
 809                         convert_type = NO_CONVERSION;
 810                         current_format = GL_RGB;
 811                         internal_format = GL_RGB;
 812                         current_pixel_format = GL_UNSIGNED_SHORT_5_6_5;
 813                     }
 814                 } else if ((src_pf->u2.dwRBitMask == 0x7C00) &&
 815                            (src_pf->u3.dwGBitMask == 0x03E0) &&
 816                            (src_pf->u4.dwBBitMask == 0x001F)) {
 817                     convert_type = CONVERT_555;
 818                     current_format = GL_RGBA;
 819                     internal_format = GL_RGBA;
 820                     current_pixel_format = GL_UNSIGNED_SHORT_5_5_5_1;
 821                 } else {
 822                     error = TRUE;
 823                 }
 824             }
 825         } else if (src_pf->u1.dwRGBBitCount == 24) {
 826             if ((src_pf->dwFlags & DDPF_ALPHAPIXELS) &&
 827                 (src_pf->u5.dwRGBAlphaBitMask != 0x000000)) {
 828                 error = TRUE;
 829             } else {
 830                 if ((src_pf->u2.dwRBitMask == 0xFF0000) &&
 831                     (src_pf->u3.dwGBitMask == 0x00FF00) &&
 832                     (src_pf->u4.dwBBitMask == 0x0000FF)) {
 833                     if (colorkey_active) {
 834                         convert_type = CONVERT_CK_RGB24;
 835                         current_format = GL_RGBA;
 836                         internal_format = GL_RGBA;
 837                         current_pixel_format = GL_UNSIGNED_INT_8_8_8_8;
 838                     } else {
 839                         convert_type = NO_CONVERSION;
 840                         current_format = GL_BGR;
 841                         internal_format = GL_RGB;
 842                         current_pixel_format = GL_UNSIGNED_BYTE;
 843                     }
 844                 } else {
 845                     error = TRUE;
 846                 }
 847             }
 848         } else if (src_pf->u1.dwRGBBitCount == 32) {
 849             if ((src_pf->dwFlags & DDPF_ALPHAPIXELS) &&
 850                 (src_pf->u5.dwRGBAlphaBitMask != 0x00000000)) {
 851                 if ((src_pf->u2.dwRBitMask ==        0xFF000000) &&
 852                     (src_pf->u3.dwGBitMask ==        0x00FF0000) &&
 853                     (src_pf->u4.dwBBitMask ==        0x0000FF00) &&
 854                     (src_pf->u5.dwRGBAlphaBitMask == 0x000000FF)) {
 855                     if (colorkey_active) {
 856                         convert_type = CONVERT_CK_8888;
 857                     } else {
 858                         convert_type = NO_CONVERSION;
 859                     }
 860                     current_format = GL_RGBA;
 861                     internal_format = GL_RGBA;
 862                     current_pixel_format = GL_UNSIGNED_INT_8_8_8_8;
 863                 } else if ((src_pf->u2.dwRBitMask ==        0x00FF0000) &&
 864                            (src_pf->u3.dwGBitMask ==        0x0000FF00) &&
 865                            (src_pf->u4.dwBBitMask ==        0x000000FF) &&
 866                            (src_pf->u5.dwRGBAlphaBitMask == 0xFF000000)) {
 867                     if (colorkey_active) {
 868                         convert_type = CONVERT_CK_8888_ARGB;
 869                         current_format = GL_RGBA;
 870                         internal_format = GL_RGBA;
 871                         current_pixel_format = GL_UNSIGNED_INT_8_8_8_8;
 872                     } else {
 873                         convert_type = NO_CONVERSION;
 874                         current_format = GL_BGRA;
 875                         internal_format = GL_RGBA;
 876                         current_pixel_format = GL_UNSIGNED_INT_8_8_8_8_REV;
 877                     }
 878                 } else {
 879                     error = TRUE;
 880                 }
 881             } else {
 882                 if ((src_pf->u2.dwRBitMask == 0x00FF0000) &&
 883                     (src_pf->u3.dwGBitMask == 0x0000FF00) &&
 884                     (src_pf->u4.dwBBitMask == 0x000000FF)) {
 885                     if (need_alpha_ck) {
 886                         convert_type = CONVERT_RGB32_888;
 887                         current_format = GL_RGBA;
 888                         internal_format = GL_RGBA;
 889                         current_pixel_format = GL_UNSIGNED_INT_8_8_8_8;
 890                     } else {
 891                         convert_type = NO_CONVERSION;
 892                         current_format = GL_BGRA;
 893                         internal_format = GL_RGBA;
 894                         current_pixel_format = GL_UNSIGNED_INT_8_8_8_8_REV;
 895                     }
 896                 } else {
 897                     error = TRUE;
 898                 }
 899             }
 900         } else {
 901             error = TRUE;
 902         }
 903     } else {
 904         error = TRUE;
 905     }
 906
 907     if (error) {
 908         ERR("Unsupported pixel format for textures :\n");
 909         if (ERR_ON(ddraw)) {
 910             DDRAW_dump_pixelformat(src_pf);
 911         }
 912         return DDERR_INVALIDPIXELFORMAT;
 913     } else {
 914         if ((need_to_alloc) ||
 915             (internal_format != *current_internal_format)) {
 916             glTexImage2D(GL_TEXTURE_2D, level, internal_format,
 917                          tex_width, tex_height, 0,
 918                          current_format, current_pixel_format, NULL);
 919             *current_internal_format = internal_format;
 920         }
 921     }
 922
 923     if (sub_texture && (convert_type == NO_CONVERSION)) {
 924         current_storage_width = surf_ptr->surface_desc.u1.lPitch / bpp;
 925     } else {
 926         if (surf_ptr->surface_desc.u1.lPitch == (surf_ptr->surface_desc.dwWidth * bpp)) {
 927             current_storage_width = 0;
 928         } else {
 929             current_storage_width = surf_ptr->surface_desc.u1.lPitch / bpp;
 930         }
 931     }
 932     glPixelStorei(GL_UNPACK_ROW_LENGTH, current_storage_width);
 933
 934     TRACE(" initialized texture upload for level %d with conversion %d.\n", current_level, convert_type);
 935
 936     return DD_OK;
 937 }
 938
 939 HRESULT upload_surface_to_tex_memory(RECT *rect, DWORD xoffset, DWORD yoffset, void **temp_buffer)
 940 {
 941     const DDSURFACEDESC * const src_d = (DDSURFACEDESC *)&(current_surface->surface_desc);
 942     void *surf_buffer = NULL;
 943     RECT lrect;
 944     DWORD width, height;
 945     BYTE bpp = GET_BPP(current_surface->surface_desc);
 946     int line_increase;
 947
 948     if (rect == NULL) {
 949         lrect.top = 0;
 950         lrect.left = 0;
 951         lrect.bottom = current_tex_height;
 952         lrect.right = current_tex_width;
 953         rect = &lrect;
 954     }
 955
 956     width = rect->right - rect->left;
 957     height = rect->bottom - rect->top;
 958
 959     if (current_surface->surface_desc.u4.ddpfPixelFormat.dwFlags & DDPF_FOURCC) {
 960         GLint retVal;
 961         int size = current_surface->surface_desc.u1.dwLinearSize;
 962         int width_ = current_surface->surface_desc.dwWidth;
 963         int height_ = current_surface->surface_desc.dwHeight;
 964         LPVOID buffer = current_surface->surface_desc.lpSurface;
 965
 966         switch (current_surface->surface_desc.u4.ddpfPixelFormat.dwFourCC) {
 967             case MAKE_FOURCC('D','X','T','1'): retVal = GL_COMPRESSED_RGBA_S3TC_DXT1_EXT; break;
 968             case MAKE_FOURCC('D','X','T','3'): retVal = GL_COMPRESSED_RGBA_S3TC_DXT3_EXT; break;
 969             case MAKE_FOURCC('D','X','T','5'): retVal = GL_COMPRESSED_RGBA_S3TC_DXT5_EXT; break;
 970             default:
 971                 FIXME("Not supported\n");
 972                 return DD_OK;
 973         }
 974
 975         if (GL_extensions.s3tc_compressed_texture) {
 976             /* GL_extensions.glCompressedTexSubImage2D(GL_TEXTURE_2D, current_level, xoffset, yoffset, width, height, retVal, (unsigned char*)temp_buffer); */
 977             GL_extensions.glCompressedTexImage2D(GL_TEXTURE_2D, current_level, retVal, width_, height_, 0, size, buffer);
 978         } else
 979             ERR("Trying to upload S3TC texture whereas the device does not have support for it\n");
 980
 981         return DD_OK;
 982     }
 983
 984     /* Used when converting stuff */
 985     line_increase = src_d->u1.lPitch - (width * bpp);
 986
 987     switch (convert_type) {
 988         case CONVERT_PALETTED: {
 989             IDirectDrawPaletteImpl* pal = current_surface->palette;
 990             BYTE table[256][4];
 991             unsigned int i;
 992             unsigned int x, y;
 993             BYTE *src = (BYTE *) (((BYTE *) src_d->lpSurface) + (bpp * rect->left) + (src_d->u1.lPitch * rect->top)), *dst;
 994
 995             if (pal == NULL) {
 996                 /* Upload a black texture. The real one will be uploaded on palette change */
 997                 WARN("Palettized texture Loading with a NULL palette !\n");
 998                 memset(table, 0, 256 * 4);
 999             } else {
1000                 /* Get the surface's palette */
1001                 for (i = 0; i < 256; i++) {
1002                     table[i][0] = pal->palents[i].peRed;
1003                     table[i][1] = pal->palents[i].peGreen;
1004                     table[i][2] = pal->palents[i].peBlue;
1005                     if ((src_d->dwFlags & DDSD_CKSRCBLT) &&
1006                         (i >= src_d->ddckCKSrcBlt.dwColorSpaceLowValue) &&
1007                         (i <= src_d->ddckCKSrcBlt.dwColorSpaceHighValue))
1008                         /* We should maybe here put a more 'neutral' color than the standard bright purple
1009                            one often used by application to prevent the nice purple borders when bi-linear
1010                            filtering is on */
1011                         table[i][3] = 0x00;
1012                     else
1013                         table[i][3] = 0xFF;
1014                 }
1015             }
1016
1017             if (*temp_buffer == NULL)
1018                 *temp_buffer = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
1019                                          current_tex_width * current_tex_height * sizeof(DWORD));
1020             dst = (BYTE *) *temp_buffer;
1021
1022             for (y = 0; y < height; y++) {
1023                 for (x = 0; x < width; x++) {
1024                     BYTE color = *src++;
1025                     *dst++ = table[color][0];
1026                     *dst++ = table[color][1];
1027                     *dst++ = table[color][2];
1028                     *dst++ = table[color][3];
1029                 }
1030                 src += line_increase;
1031             }
1032         } break;
1033
1034         case CONVERT_CK_565: {
1035             /* Converting the 565 format in 5551 packed to emulate color-keying.
1036
1037                Note : in all these conversion, it would be best to average the averaging
1038                       pixels to get the color of the pixel that will be color-keyed to
1039                       prevent 'color bleeding'. This will be done later on if ever it is
1040                       too visible.
1041
1042                Note2: when using color-keying + alpha, are the alpha bits part of the
1043                       color-space or not ?
1044             */
1045             unsigned int x, y;
1046             WORD *src = (WORD *) (((BYTE *) src_d->lpSurface) + (bpp * rect->left) + (src_d->u1.lPitch * rect->top)), *dst;
1047
1048             if (*temp_buffer == NULL)
1049                 *temp_buffer = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
1050                                          current_tex_width * current_tex_height * sizeof(WORD));
1051             dst = (WORD *) *temp_buffer;
1052
1053             for (y = 0; y < height; y++) {
1054                 for (x = 0; x < width; x++) {
1055                     WORD color = *src++;
1056                     *dst = ((color & 0xFFC0) | ((color & 0x1F) << 1));
1057                     if ((color < src_d->ddckCKSrcBlt.dwColorSpaceLowValue) ||
1058                         (color > src_d->ddckCKSrcBlt.dwColorSpaceHighValue))
1059                         *dst |= 0x0001;
1060                     dst++;
1061                 }
1062                 src = (WORD *) (((BYTE *) src) + line_increase);
1063             }
1064         } break;
1065
1066         case CONVERT_CK_5551: {
1067             /* Change the alpha value of the color-keyed pixels to emulate color-keying. */
1068             unsigned int x, y;
1069             WORD *src = (WORD *) (((BYTE *) src_d->lpSurface) + (bpp * rect->left) + (src_d->u1.lPitch * rect->top)), *dst;
1070
1071             if (*temp_buffer == NULL)
1072                 *temp_buffer = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
1073                                          current_tex_width * current_tex_height * sizeof(WORD));
1074             dst = (WORD *) *temp_buffer;
1075
1076             for (y = 0; y < height; y++) {
1077                 for (x = 0; x < width; x++) {
1078                     WORD color = *src++;
1079                     *dst = color & 0xFFFE;
1080                     if ((color < src_d->ddckCKSrcBlt.dwColorSpaceLowValue) ||
1081                         (color > src_d->ddckCKSrcBlt.dwColorSpaceHighValue))
1082                         *dst |= color & 0x0001;
1083                     dst++;
1084                 }
1085                 src = (WORD *) (((BYTE *) src) + line_increase);
1086             }
1087         } break;
1088
1089         case CONVERT_CK_4444: {
1090             /* Change the alpha value of the color-keyed pixels to emulate color-keying. */
1091             unsigned int x, y;
1092             WORD *src = (WORD *) (((BYTE *) src_d->lpSurface) + (bpp * rect->left) + (src_d->u1.lPitch * rect->top)), *dst;
1093
1094             if (*temp_buffer == NULL)
1095                 *temp_buffer = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
1096                                          current_tex_width * current_tex_height * sizeof(WORD));
1097             dst = (WORD *) *temp_buffer;
1098
1099             for (y = 0; y < height; y++) {
1100                 for (x = 0; x < width; x++) {
1101                     WORD color = *src++;
1102                     *dst = color & 0xFFF0;
1103                     if ((color < src_d->ddckCKSrcBlt.dwColorSpaceLowValue) ||
1104                         (color > src_d->ddckCKSrcBlt.dwColorSpaceHighValue))
1105                         *dst |= color & 0x000F;
1106                     dst++;
1107                 }
1108                 src = (WORD *) (((BYTE *) src) + line_increase);
1109             }
1110         } break;
1111
1112         case CONVERT_CK_4444_ARGB: {
1113             /* Move the four Alpha bits... */
1114             unsigned int x, y;
1115             WORD *src = (WORD *) (((BYTE *) src_d->lpSurface) + (bpp * rect->left) + (src_d->u1.lPitch * rect->top)), *dst;
1116
1117             if (*temp_buffer == NULL)
1118                 *temp_buffer = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
1119                                          current_tex_width * current_tex_height * sizeof(WORD));
1120             dst = (WORD *) *temp_buffer;
1121
1122             for (y = 0; y < height; y++) {
1123                 for (x = 0; x < width; x++) {
1124                     WORD color = *src++;
1125                     *dst = (color & 0x0FFF) << 4;
1126                     if ((color < src_d->ddckCKSrcBlt.dwColorSpaceLowValue) ||
1127                         (color > src_d->ddckCKSrcBlt.dwColorSpaceHighValue))
1128                         *dst |= (color & 0xF000) >> 12;
1129                     dst++;
1130                 }
1131                 src = (WORD *) (((BYTE *) src) + line_increase);
1132             }
1133         } break;
1134
1135         case CONVERT_CK_1555: {
1136             unsigned int x, y;
1137             WORD *src = (WORD *) (((BYTE *) src_d->lpSurface) + (bpp * rect->left) + (src_d->u1.lPitch * rect->top)), *dst;
1138
1139             if (*temp_buffer == NULL)
1140                 *temp_buffer = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
1141                                          current_tex_width * current_tex_height * sizeof(WORD));
1142             dst = (WORD *) *temp_buffer;
1143
1144             for (y = 0; y < height; y++) {
1145                 for (x = 0; x < width; x++) {
1146                     WORD color = *src++;
1147                     *dst = (color & 0x7FFF) << 1;
1148                     if ((color < src_d->ddckCKSrcBlt.dwColorSpaceLowValue) ||
1149                         (color > src_d->ddckCKSrcBlt.dwColorSpaceHighValue))
1150                         *dst |= (color & 0x8000) >> 15;
1151                     dst++;
1152                 }
1153                 src = (WORD *) (((BYTE *) src) + line_increase);
1154             }
1155         } break;
1156
1157         case CONVERT_555: {
1158             /* Converting the 0555 format in 5551 packed */
1159             unsigned int x, y;
1160             WORD *src = (WORD *) (((BYTE *) src_d->lpSurface) + (bpp * rect->left) + (src_d->u1.lPitch * rect->top)), *dst;
1161
1162             if (*temp_buffer == NULL)
1163                 *temp_buffer = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
1164                                          current_tex_width * current_tex_height * sizeof(WORD));
1165             dst = (WORD *) *temp_buffer;
1166
1167             if (src_d->dwFlags & DDSD_CKSRCBLT) {
1168                 for (y = 0; y < height; y++) {
1169                     for (x = 0; x < width; x++) {
1170                         WORD color = *src++;
1171                         *dst = (color & 0x7FFF) << 1;
1172                         if ((color < src_d->ddckCKSrcBlt.dwColorSpaceLowValue) ||
1173                             (color > src_d->ddckCKSrcBlt.dwColorSpaceHighValue))
1174                             *dst |= 0x0001;
1175                         dst++;
1176                     }
1177                     src = (WORD *) (((BYTE *) src) + line_increase);
1178                 }
1179             } else {
1180                 for (y = 0; y < height; y++) {
1181                     for (x = 0; x < width; x++) {
1182                         WORD color = *src++;
1183                         *dst++ = ((color & 0x7FFF) << 1) | 0x0001;
1184                     }
1185                     src = (WORD *) (((BYTE *) src) + line_increase);
1186                 }
1187             }
1188
1189         } break;
1190
1191         case CONVERT_CK_RGB24: {
1192             /* This is a pain :-) */
1193             unsigned int x, y;
1194             BYTE *src = (BYTE *) (((BYTE *) src_d->lpSurface) + (bpp * rect->left) + (src_d->u1.lPitch * rect->top));
1195             DWORD *dst;
1196
1197             if (*temp_buffer == NULL)
1198                 *temp_buffer = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
1199                                          current_tex_width * current_tex_height * sizeof(DWORD));
1200             dst = (DWORD *) *temp_buffer;
1201
1202             for (y = 0; y < height; y++) {
1203                 for (x = 0; x < width; x++) {
1204                     DWORD color = *((DWORD *) src) & 0x00FFFFFF;
1205                     src += 3;
1206                     *dst = color << 8;
1207                     if ((color < src_d->ddckCKSrcBlt.dwColorSpaceLowValue) ||
1208                         (color > src_d->ddckCKSrcBlt.dwColorSpaceHighValue))
1209                         *dst |= 0xFF;
1210                     dst++;
1211                 }
1212                 src += line_increase;
1213             }
1214         } break;
1215
1216         case CONVERT_CK_8888: {
1217             /* Just use the alpha component to handle color-keying... */
1218             unsigned int x, y;
1219             DWORD *src = (DWORD *) (((BYTE *) src_d->lpSurface) + (bpp * rect->left) + (src_d->u1.lPitch * rect->top)), *dst;
1220
1221             if (*temp_buffer == NULL)
1222                 *temp_buffer = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
1223                                          current_tex_width * current_tex_height * sizeof(DWORD));
1224             dst = (DWORD *) *temp_buffer;
1225
1226             for (y = 0; y < height; y++) {
1227                 for (x = 0; x < width; x++) {
1228                     DWORD color = *src++;
1229                     *dst = color & 0xFFFFFF00;
1230                     if ((color < src_d->ddckCKSrcBlt.dwColorSpaceLowValue) ||
1231                         (color > src_d->ddckCKSrcBlt.dwColorSpaceHighValue))
1232                         *dst |= color & 0x000000FF;
1233                     dst++;
1234                 }
1235                 src = (DWORD *) (((BYTE *) src) + line_increase);
1236             }
1237         } break;
1238
1239         case CONVERT_CK_8888_ARGB: {
1240             unsigned int x, y;
1241             DWORD *src = (DWORD *) (((BYTE *) src_d->lpSurface) + (bpp * rect->left) + (src_d->u1.lPitch * rect->top)), *dst;
1242
1243             if (*temp_buffer == NULL)
1244                 *temp_buffer = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
1245                                          current_tex_width * current_tex_height * sizeof(DWORD));
1246             dst = (DWORD *) *temp_buffer;
1247
1248             for (y = 0; y < height; y++) {
1249                 for (x = 0; x < width; x++) {
1250                     DWORD color = *src++;
1251                     *dst = (color & 0x00FFFFFF) << 8;
1252                     if ((color < src_d->ddckCKSrcBlt.dwColorSpaceLowValue) ||
1253                         (color > src_d->ddckCKSrcBlt.dwColorSpaceHighValue))
1254                         *dst |= (color & 0xFF000000) >> 24;
1255                     dst++;
1256                 }
1257                 src = (DWORD *) (((BYTE *) src) + line_increase);
1258             }
1259         } break;
1260
1261         case CONVERT_RGB32_888: {
1262             /* Just add an alpha component and handle color-keying... */
1263             unsigned int x, y;
1264             DWORD *src = (DWORD *) (((BYTE *) src_d->lpSurface) + (bpp * rect->left) + (src_d->u1.lPitch * rect->top)), *dst;
1265
1266             if (*temp_buffer == NULL)
1267                 *temp_buffer = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
1268                                          current_tex_width * current_tex_height * sizeof(DWORD));
1269             dst = (DWORD *) *temp_buffer;
1270
1271             if (src_d->dwFlags & DDSD_CKSRCBLT) {
1272                 for (y = 0; y < height; y++) {
1273                     for (x = 0; x < width; x++) {
1274                         DWORD color = *src++;
1275                         *dst = color << 8;
1276                         if ((color < src_d->ddckCKSrcBlt.dwColorSpaceLowValue) ||
1277                             (color > src_d->ddckCKSrcBlt.dwColorSpaceHighValue))
1278                             *dst |= 0xFF;
1279                         dst++;
1280                     }
1281                     src = (DWORD *) (((BYTE *) src) + line_increase);
1282                 }
1283             } else {
1284                 for (y = 0; y < height; y++) {
1285                     for (x = 0; x < width; x++) {
1286                         *dst++ = (*src++ << 8) | 0xFF;
1287                     }
1288                     src = (DWORD *) (((BYTE *) src) + line_increase);
1289                 }
1290             }
1291         } break;
1292
1293         case NO_CONVERSION:
1294             /* Nothing to do here as the name suggests... Just set-up the buffer correctly */
1295             surf_buffer = (((BYTE *) src_d->lpSurface) + (bpp * rect->left) + (src_d->u1.lPitch * rect->top));
1296             break;
1297     }
1298
1299     if (convert_type != NO_CONVERSION) {
1300         /* When doing conversion, the storage is always of width 'width' as there will never
1301            be any Pitch issue... For now :-)
1302         */
1303         surf_buffer = *temp_buffer;
1304         if (width != current_storage_width) {
1305             glPixelStorei(GL_UNPACK_ROW_LENGTH, width);
1306             current_storage_width = width;
1307         }
1308     }
1309
1310     glTexSubImage2D(GL_TEXTURE_2D,
1311                     current_level,
1312                     xoffset, yoffset,
1313                     width, height,
1314                     current_format,
1315                     current_pixel_format,
1316                     surf_buffer);
1317
1318     return DD_OK;
1319 }
1320
1321 HRESULT upload_surface_to_tex_memory_release(void)
1322 {
1323     current_surface = NULL;
1324
1325     return DD_OK;
1326 }