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   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 "mesa_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 == TRUE) {
 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->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_SRCALPHA;
 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_INVSRCALPHA;
 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     /* First, do some sanity checks ... */
 658     if ((surf_ptr->surface_desc.u1.lPitch % bpp) != 0) {
 659         FIXME("Warning : pitch is not a multiple of BPP - not supported yet !\n");
 660     } else {
 661         /* In that case, no need to have any alignement constraints... */
 662         if (current_alignement_constraints != 1) {
 663             glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
 664             current_alignement_constraints = 1;
 665         }
 666     }
 667
 668     /* Note: we only check width here as you cannot have width non-zero while height is set to zero */
 669     if (tex_width == 0) {
 670         sub_texture = FALSE;
 671
 672         tex_width = surf_ptr->surface_desc.dwWidth;
 673         tex_height = surf_ptr->surface_desc.dwHeight;
 674     }
 675
 676     current_tex_width = tex_width;
 677     current_tex_height = tex_height;
 678
 679     if (src_pf->dwFlags & DDPF_PALETTEINDEXED8) {
 680         /* ****************
 681            Paletted Texture
 682            **************** */
 683         current_format = GL_RGBA;
 684         internal_format = GL_RGBA;
 685         current_pixel_format = GL_UNSIGNED_BYTE;
 686         convert_type = CONVERT_PALETTED;
 687     } else if (src_pf->dwFlags & DDPF_RGB) {
 688         /* ************
 689            RGB Textures
 690            ************ */
 691         if (src_pf->u1.dwRGBBitCount == 8) {
 692             if ((src_pf->dwFlags & DDPF_ALPHAPIXELS) &&
 693                 (src_pf->u5.dwRGBAlphaBitMask != 0x00)) {
 694                 error = TRUE;
 695             } else {
 696                 if ((src_pf->u2.dwRBitMask == 0xE0) &&
 697                     (src_pf->u3.dwGBitMask == 0x1C) &&
 698                     (src_pf->u4.dwBBitMask == 0x03)) {
 699                     /* **********************
 700                        GL_UNSIGNED_BYTE_3_3_2
 701                        ********************** */
 702                     if (colorkey_active) {
 703                         /* This texture format will never be used.. So do not care about color keying
 704                            up until the point in time it will be needed :-) */
 705                         FIXME(" ColorKeying not supported in the RGB 332 format !\n");
 706                     }
 707                     current_format = GL_RGB;
 708                     internal_format = GL_RGB;
 709                     current_pixel_format = GL_UNSIGNED_BYTE_3_3_2;
 710                     convert_type = NO_CONVERSION;
 711                 } else {
 712                     error = TRUE;
 713                 }
 714             }
 715         } else if (src_pf->u1.dwRGBBitCount == 16) {
 716             if ((src_pf->dwFlags & DDPF_ALPHAPIXELS) &&
 717                 (src_pf->u5.dwRGBAlphaBitMask != 0x0000)) {
 718                 if ((src_pf->u2.dwRBitMask ==        0xF800) &&
 719                     (src_pf->u3.dwGBitMask ==        0x07C0) &&
 720                     (src_pf->u4.dwBBitMask ==        0x003E) &&
 721                     (src_pf->u5.dwRGBAlphaBitMask == 0x0001)) {
 722                     current_format = GL_RGBA;
 723                     internal_format = GL_RGBA;
 724                     current_pixel_format = GL_UNSIGNED_SHORT_5_5_5_1;
 725                     if (colorkey_active) {
 726                         convert_type = CONVERT_CK_5551;
 727                     } else {
 728                         convert_type = NO_CONVERSION;
 729                     }
 730                 } else if ((src_pf->u2.dwRBitMask ==        0xF000) &&
 731                            (src_pf->u3.dwGBitMask ==        0x0F00) &&
 732                            (src_pf->u4.dwBBitMask ==        0x00F0) &&
 733                            (src_pf->u5.dwRGBAlphaBitMask == 0x000F)) {
 734                     current_format = GL_RGBA;
 735                     internal_format = GL_RGBA;
 736                     current_pixel_format = GL_UNSIGNED_SHORT_4_4_4_4;
 737                     if (colorkey_active) {
 738                         convert_type = CONVERT_CK_4444;
 739                     } else {
 740                         convert_type = NO_CONVERSION;
 741                     }
 742                 } else if ((src_pf->u2.dwRBitMask ==        0x0F00) &&
 743                            (src_pf->u3.dwGBitMask ==        0x00F0) &&
 744                            (src_pf->u4.dwBBitMask ==        0x000F) &&
 745                            (src_pf->u5.dwRGBAlphaBitMask == 0xF000)) {
 746                     if (colorkey_active) {
 747                         convert_type = CONVERT_CK_4444_ARGB;
 748                         current_format = GL_RGBA;
 749                         internal_format = GL_RGBA;
 750                         current_pixel_format = GL_UNSIGNED_SHORT_4_4_4_4;
 751                     } else {
 752                         convert_type = NO_CONVERSION;
 753                         current_format = GL_BGRA;
 754                         internal_format = GL_RGBA;
 755                         current_pixel_format = GL_UNSIGNED_SHORT_4_4_4_4_REV;
 756                     }
 757                 } else if ((src_pf->u2.dwRBitMask ==        0x7C00) &&
 758                            (src_pf->u3.dwGBitMask ==        0x03E0) &&
 759                            (src_pf->u4.dwBBitMask ==        0x001F) &&
 760                            (src_pf->u5.dwRGBAlphaBitMask == 0x8000)) {
 761                     if (colorkey_active) {
 762                         convert_type = CONVERT_CK_1555;
 763                         current_format = GL_RGBA;
 764                         internal_format = GL_RGBA;
 765                         current_pixel_format = GL_UNSIGNED_SHORT_5_5_5_1;
 766                     } else {
 767                         convert_type = NO_CONVERSION;
 768                         current_format = GL_BGRA;
 769                         internal_format = GL_RGBA;
 770                         current_pixel_format = GL_UNSIGNED_SHORT_1_5_5_5_REV;
 771                     }
 772                 } else {
 773                     error = TRUE;
 774                 }
 775             } else {
 776                 if ((src_pf->u2.dwRBitMask == 0xF800) &&
 777                     (src_pf->u3.dwGBitMask == 0x07E0) &&
 778                     (src_pf->u4.dwBBitMask == 0x001F)) {
 779                     if (colorkey_active) {
 780                         convert_type = CONVERT_CK_565;
 781                         current_format = GL_RGBA;
 782                         internal_format = GL_RGBA;
 783                         current_pixel_format = GL_UNSIGNED_SHORT_5_5_5_1;
 784                     } else {
 785                         convert_type = NO_CONVERSION;
 786                         current_format = GL_RGB;
 787                         internal_format = GL_RGB;
 788                         current_pixel_format = GL_UNSIGNED_SHORT_5_6_5;
 789                     }
 790                 } else if ((src_pf->u2.dwRBitMask == 0x7C00) &&
 791                            (src_pf->u3.dwGBitMask == 0x03E0) &&
 792                            (src_pf->u4.dwBBitMask == 0x001F)) {
 793                     convert_type = CONVERT_555;
 794                     current_format = GL_RGBA;
 795                     internal_format = GL_RGBA;
 796                     current_pixel_format = GL_UNSIGNED_SHORT_5_5_5_1;
 797                 } else {
 798                     error = TRUE;
 799                 }
 800             }
 801         } else if (src_pf->u1.dwRGBBitCount == 24) {
 802             if ((src_pf->dwFlags & DDPF_ALPHAPIXELS) &&
 803                 (src_pf->u5.dwRGBAlphaBitMask != 0x000000)) {
 804                 error = TRUE;
 805             } else {
 806                 if ((src_pf->u2.dwRBitMask == 0xFF0000) &&
 807                     (src_pf->u3.dwGBitMask == 0x00FF00) &&
 808                     (src_pf->u4.dwBBitMask == 0x0000FF)) {
 809                     if (colorkey_active) {
 810                         convert_type = CONVERT_CK_RGB24;
 811                         current_format = GL_RGBA;
 812                         internal_format = GL_RGBA;
 813                         current_pixel_format = GL_UNSIGNED_INT_8_8_8_8;
 814                     } else {
 815                         convert_type = NO_CONVERSION;
 816                         current_format = GL_BGR;
 817                         internal_format = GL_RGB;
 818                         current_pixel_format = GL_UNSIGNED_BYTE;
 819                     }
 820                 } else {
 821                     error = TRUE;
 822                 }
 823             }
 824         } else if (src_pf->u1.dwRGBBitCount == 32) {
 825             if ((src_pf->dwFlags & DDPF_ALPHAPIXELS) &&
 826                 (src_pf->u5.dwRGBAlphaBitMask != 0x00000000)) {
 827                 if ((src_pf->u2.dwRBitMask ==        0xFF000000) &&
 828                     (src_pf->u3.dwGBitMask ==        0x00FF0000) &&
 829                     (src_pf->u4.dwBBitMask ==        0x0000FF00) &&
 830                     (src_pf->u5.dwRGBAlphaBitMask == 0x000000FF)) {
 831                     if (colorkey_active) {
 832                         convert_type = CONVERT_CK_8888;
 833                     } else {
 834                         convert_type = NO_CONVERSION;
 835                     }
 836                     current_format = GL_RGBA;
 837                     internal_format = GL_RGBA;
 838                     current_pixel_format = GL_UNSIGNED_INT_8_8_8_8;
 839                 } else if ((src_pf->u2.dwRBitMask ==        0x00FF0000) &&
 840                            (src_pf->u3.dwGBitMask ==        0x0000FF00) &&
 841                            (src_pf->u4.dwBBitMask ==        0x000000FF) &&
 842                            (src_pf->u5.dwRGBAlphaBitMask == 0xFF000000)) {
 843                     if (colorkey_active) {
 844                         convert_type = CONVERT_CK_8888_ARGB;
 845                         current_format = GL_RGBA;
 846                         internal_format = GL_RGBA;
 847                         current_pixel_format = GL_UNSIGNED_INT_8_8_8_8;
 848                     } else {
 849                         convert_type = NO_CONVERSION;
 850                         current_format = GL_BGRA;
 851                         internal_format = GL_RGBA;
 852                         current_pixel_format = GL_UNSIGNED_INT_8_8_8_8_REV;
 853                     }
 854                 } else {
 855                     error = TRUE;
 856                 }
 857             } else {
 858                 if ((src_pf->u2.dwRBitMask == 0x00FF0000) &&
 859                     (src_pf->u3.dwGBitMask == 0x0000FF00) &&
 860                     (src_pf->u4.dwBBitMask == 0x000000FF)) {
 861                     if (need_alpha_ck == TRUE) {
 862                         convert_type = CONVERT_RGB32_888;
 863                         current_format = GL_RGBA;
 864                         internal_format = GL_RGBA;
 865                         current_pixel_format = GL_UNSIGNED_INT_8_8_8_8;
 866                     } else {
 867                         convert_type = NO_CONVERSION;
 868                         current_format = GL_BGRA;
 869                         internal_format = GL_RGBA;
 870                         current_pixel_format = GL_UNSIGNED_INT_8_8_8_8_REV;
 871                     }
 872                 } else {
 873                     error = TRUE;
 874                 }
 875             }
 876         } else {
 877             error = TRUE;
 878         }
 879     } else {
 880         error = TRUE;
 881     }
 882
 883     if (error == TRUE) {
 884         ERR("Unsupported pixel format for textures : \n");
 885         if (ERR_ON(ddraw)) {
 886             DDRAW_dump_pixelformat(src_pf);
 887         }
 888         return DDERR_INVALIDPIXELFORMAT;
 889     } else {
 890         if ((need_to_alloc) ||
 891             (internal_format != *current_internal_format)) {
 892             glTexImage2D(GL_TEXTURE_2D, level, internal_format,
 893                          tex_width, tex_height, 0,
 894                          current_format, current_pixel_format, NULL);
 895             *current_internal_format = internal_format;
 896         }
 897     }
 898
 899     if ((sub_texture == TRUE) && (convert_type == NO_CONVERSION)) {
 900         current_storage_width = surf_ptr->surface_desc.u1.lPitch / bpp;
 901     } else {
 902         if (surf_ptr->surface_desc.u1.lPitch == (surf_ptr->surface_desc.dwWidth * bpp)) {
 903             current_storage_width = 0;
 904         } else {
 905             current_storage_width = surf_ptr->surface_desc.u1.lPitch / bpp;
 906         }
 907     }
 908     glPixelStorei(GL_UNPACK_ROW_LENGTH, current_storage_width);
 909
 910     TRACE(" initialized texture upload for level %d with conversion %d.\n", current_level, convert_type);
 911
 912     return DD_OK;
 913 }
 914
 915 HRESULT upload_surface_to_tex_memory(RECT *rect, DWORD xoffset, DWORD yoffset, void **temp_buffer)
 916 {
 917     const DDSURFACEDESC * const src_d = (DDSURFACEDESC *)&(current_surface->surface_desc);
 918     void *surf_buffer = NULL;
 919     RECT lrect;
 920     DWORD width, height;
 921     BYTE bpp = GET_BPP(current_surface->surface_desc);
 922     int line_increase;
 923
 924     if (rect == NULL) {
 925         lrect.top = 0;
 926         lrect.left = 0;
 927         lrect.bottom = current_tex_height;
 928         lrect.right = current_tex_width;
 929         rect = &lrect;
 930     }
 931
 932     width = rect->right - rect->left;
 933     height = rect->bottom - rect->top;
 934
 935     /* Used when converting stuff */
 936     line_increase = src_d->u1.lPitch - (width * bpp);
 937
 938     switch (convert_type) {
 939         case CONVERT_PALETTED: {
 940             IDirectDrawPaletteImpl* pal = current_surface->palette;
 941             BYTE table[256][4];
 942             int i;
 943             int x, y;
 944             BYTE *src = (BYTE *) (((BYTE *) src_d->lpSurface) + (bpp * rect->left) + (src_d->u1.lPitch * rect->top)), *dst;
 945
 946             if (pal == NULL) {
 947                 /* Upload a black texture. The real one will be uploaded on palette change */
 948                 WARN("Palettized texture Loading with a NULL palette !\n");
 949                 memset(table, 0, 256 * 4);
 950             } else {
 951                 /* Get the surface's palette */
 952                 for (i = 0; i < 256; i++) {
 953                     table[i][0] = pal->palents[i].peRed;
 954                     table[i][1] = pal->palents[i].peGreen;
 955                     table[i][2] = pal->palents[i].peBlue;
 956                     if ((src_d->dwFlags & DDSD_CKSRCBLT) &&
 957                         (i >= src_d->ddckCKSrcBlt.dwColorSpaceLowValue) &&
 958                         (i <= src_d->ddckCKSrcBlt.dwColorSpaceHighValue))
 959                         /* We should maybe here put a more 'neutral' color than the standard bright purple
 960                            one often used by application to prevent the nice purple borders when bi-linear
 961                            filtering is on */
 962                         table[i][3] = 0x00;
 963                     else
 964                         table[i][3] = 0xFF;
 965                 }
 966             }
 967
 968             if (*temp_buffer == NULL)
 969                 *temp_buffer = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
 970                                          current_tex_width * current_tex_height * sizeof(DWORD));
 971             dst = (BYTE *) *temp_buffer;
 972
 973             for (y = 0; y < height; y++) {
 974                 for (x = 0; x < width; x++) {
 975                     BYTE color = *src++;
 976                     *dst++ = table[color][0];
 977                     *dst++ = table[color][1];
 978                     *dst++ = table[color][2];
 979                     *dst++ = table[color][3];
 980                 }
 981                 src += line_increase;
 982             }
 983         } break;
 984
 985         case CONVERT_CK_565: {
 986             /* Converting the 565 format in 5551 packed to emulate color-keying.
 987
 988                Note : in all these conversion, it would be best to average the averaging
 989                       pixels to get the color of the pixel that will be color-keyed to
 990                       prevent 'color bleeding'. This will be done later on if ever it is
 991                       too visible.
 992
 993                Note2: when using color-keying + alpha, are the alpha bits part of the
 994                       color-space or not ?
 995             */
 996             int x, y;
 997             WORD *src = (WORD *) (((BYTE *) src_d->lpSurface) + (bpp * rect->left) + (src_d->u1.lPitch * rect->top)), *dst;
 998
 999             if (*temp_buffer == NULL)
1000                 *temp_buffer = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
1001                                          current_tex_width * current_tex_height * sizeof(WORD));
1002             dst = (WORD *) *temp_buffer;
1003
1004             for (y = 0; y < height; y++) {
1005                 for (x = 0; x < width; x++) {
1006                     WORD color = *src++;
1007                     *dst = ((color & 0xFFC0) | ((color & 0x1F) << 1));
1008                     if ((color < src_d->ddckCKSrcBlt.dwColorSpaceLowValue) ||
1009                         (color > src_d->ddckCKSrcBlt.dwColorSpaceHighValue))
1010                         *dst |= 0x0001;
1011                     dst++;
1012                 }
1013                 src = (WORD *) (((BYTE *) src) + line_increase);
1014             }
1015         } break;
1016
1017         case CONVERT_CK_5551: {
1018             /* Change the alpha value of the color-keyed pixels to emulate color-keying. */
1019             int x, y;
1020             WORD *src = (WORD *) (((BYTE *) src_d->lpSurface) + (bpp * rect->left) + (src_d->u1.lPitch * rect->top)), *dst;
1021
1022             if (*temp_buffer == NULL)
1023                 *temp_buffer = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
1024                                          current_tex_width * current_tex_height * sizeof(WORD));
1025             dst = (WORD *) *temp_buffer;
1026
1027             for (y = 0; y < height; y++) {
1028                 for (x = 0; x < width; x++) {
1029                     WORD color = *src++;
1030                     *dst = color & 0xFFFE;
1031                     if ((color < src_d->ddckCKSrcBlt.dwColorSpaceLowValue) ||
1032                         (color > src_d->ddckCKSrcBlt.dwColorSpaceHighValue))
1033                         *dst |= color & 0x0001;
1034                     dst++;
1035                 }
1036                 src = (WORD *) (((BYTE *) src) + line_increase);
1037             }
1038         } break;
1039
1040         case CONVERT_CK_4444: {
1041             /* Change the alpha value of the color-keyed pixels to emulate color-keying. */
1042             int x, y;
1043             WORD *src = (WORD *) (((BYTE *) src_d->lpSurface) + (bpp * rect->left) + (src_d->u1.lPitch * rect->top)), *dst;
1044
1045             if (*temp_buffer == NULL)
1046                 *temp_buffer = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
1047                                          current_tex_width * current_tex_height * sizeof(WORD));
1048             dst = (WORD *) *temp_buffer;
1049
1050             for (y = 0; y < height; y++) {
1051                 for (x = 0; x < width; x++) {
1052                     WORD color = *src++;
1053                     *dst = color & 0xFFF0;
1054                     if ((color < src_d->ddckCKSrcBlt.dwColorSpaceLowValue) ||
1055                         (color > src_d->ddckCKSrcBlt.dwColorSpaceHighValue))
1056                         *dst |= color & 0x000F;
1057                     dst++;
1058                 }
1059                 src = (WORD *) (((BYTE *) src) + line_increase);
1060             }
1061         } break;
1062
1063         case CONVERT_CK_4444_ARGB: {
1064             /* Move the four Alpha bits... */
1065             int x, y;
1066             WORD *src = (WORD *) (((BYTE *) src_d->lpSurface) + (bpp * rect->left) + (src_d->u1.lPitch * rect->top)), *dst;
1067
1068             if (*temp_buffer == NULL)
1069                 *temp_buffer = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
1070                                          current_tex_width * current_tex_height * sizeof(WORD));
1071             dst = (WORD *) *temp_buffer;
1072
1073             for (y = 0; y < height; y++) {
1074                 for (x = 0; x < width; x++) {
1075                     WORD color = *src++;
1076                     *dst = (color & 0x0FFF) << 4;
1077                     if ((color < src_d->ddckCKSrcBlt.dwColorSpaceLowValue) ||
1078                         (color > src_d->ddckCKSrcBlt.dwColorSpaceHighValue))
1079                         *dst |= (color & 0xF000) >> 12;
1080                     dst++;
1081                 }
1082                 src = (WORD *) (((BYTE *) src) + line_increase);
1083             }
1084         } break;
1085
1086         case CONVERT_CK_1555: {
1087             int x, y;
1088             WORD *src = (WORD *) (((BYTE *) src_d->lpSurface) + (bpp * rect->left) + (src_d->u1.lPitch * rect->top)), *dst;
1089
1090             if (*temp_buffer == NULL)
1091                 *temp_buffer = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
1092                                          current_tex_width * current_tex_height * sizeof(WORD));
1093             dst = (WORD *) *temp_buffer;
1094
1095             for (y = 0; y < height; y++) {
1096                 for (x = 0; x < width; x++) {
1097                     WORD color = *src++;
1098                     *dst = (color & 0x7FFF) << 1;
1099                     if ((color < src_d->ddckCKSrcBlt.dwColorSpaceLowValue) ||
1100                         (color > src_d->ddckCKSrcBlt.dwColorSpaceHighValue))
1101                         *dst |= (color & 0x8000) >> 15;
1102                     dst++;
1103                 }
1104                 src = (WORD *) (((BYTE *) src) + line_increase);
1105             }
1106         } break;
1107
1108         case CONVERT_555: {
1109             /* Converting the 0555 format in 5551 packed */
1110             int x, y;
1111             WORD *src = (WORD *) (((BYTE *) src_d->lpSurface) + (bpp * rect->left) + (src_d->u1.lPitch * rect->top)), *dst;
1112
1113             if (*temp_buffer == NULL)
1114                 *temp_buffer = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
1115                                          current_tex_width * current_tex_height * sizeof(WORD));
1116             dst = (WORD *) *temp_buffer;
1117
1118             if (src_d->dwFlags & DDSD_CKSRCBLT) {
1119                 for (y = 0; y < height; y++) {
1120                     for (x = 0; x < width; x++) {
1121                         WORD color = *src++;
1122                         *dst = (color & 0x7FFF) << 1;
1123                         if ((color < src_d->ddckCKSrcBlt.dwColorSpaceLowValue) ||
1124                             (color > src_d->ddckCKSrcBlt.dwColorSpaceHighValue))
1125                             *dst |= 0x0001;
1126                         dst++;
1127                     }
1128                     src = (WORD *) (((BYTE *) src) + line_increase);
1129                 }
1130             } else {
1131                 for (y = 0; y < height; y++) {
1132                     for (x = 0; x < width; x++) {
1133                         WORD color = *src++;
1134                         *dst++ = ((color & 0x7FFF) << 1) | 0x0001;
1135                     }
1136                     src = (WORD *) (((BYTE *) src) + line_increase);
1137                 }
1138             }
1139
1140         } break;
1141
1142         case CONVERT_CK_RGB24: {
1143             /* This is a pain :-) */
1144             int x, y;
1145             BYTE *src = (BYTE *) (((BYTE *) src_d->lpSurface) + (bpp * rect->left) + (src_d->u1.lPitch * rect->top));
1146             DWORD *dst;
1147
1148             if (*temp_buffer == NULL)
1149                 *temp_buffer = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
1150                                          current_tex_width * current_tex_height * sizeof(DWORD));
1151             dst = (DWORD *) *temp_buffer;
1152
1153             for (y = 0; y < height; y++) {
1154                 for (x = 0; x < width; x++) {
1155                     DWORD color = *((DWORD *) src) & 0x00FFFFFF;
1156                     src += 3;
1157                     *dst = *src++ << 8;
1158                     if ((color < src_d->ddckCKSrcBlt.dwColorSpaceLowValue) ||
1159                         (color > src_d->ddckCKSrcBlt.dwColorSpaceHighValue))
1160                         *dst |= 0xFF;
1161                     dst++;
1162                 }
1163                 src += line_increase;
1164             }
1165         } break;
1166
1167         case CONVERT_CK_8888: {
1168             /* Just use the alpha component to handle color-keying... */
1169             int x, y;
1170             DWORD *src = (DWORD *) (((BYTE *) src_d->lpSurface) + (bpp * rect->left) + (src_d->u1.lPitch * rect->top)), *dst;
1171
1172             if (*temp_buffer == NULL)
1173                 *temp_buffer = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
1174                                          current_tex_width * current_tex_height * sizeof(DWORD));
1175             dst = (DWORD *) *temp_buffer;
1176
1177             for (y = 0; y < height; y++) {
1178                 for (x = 0; x < width; x++) {
1179                     DWORD color = *src++;
1180                     *dst = color & 0xFFFFFF00;
1181                     if ((color < src_d->ddckCKSrcBlt.dwColorSpaceLowValue) ||
1182                         (color > src_d->ddckCKSrcBlt.dwColorSpaceHighValue))
1183                         *dst |= color & 0x000000FF;
1184                     dst++;
1185                 }
1186                 src = (DWORD *) (((BYTE *) src) + line_increase);
1187             }
1188         } break;
1189
1190         case CONVERT_CK_8888_ARGB: {
1191             int x, y;
1192             DWORD *src = (DWORD *) (((BYTE *) src_d->lpSurface) + (bpp * rect->left) + (src_d->u1.lPitch * rect->top)), *dst;
1193
1194             if (*temp_buffer == NULL)
1195                 *temp_buffer = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
1196                                          current_tex_width * current_tex_height * sizeof(DWORD));
1197             dst = (DWORD *) *temp_buffer;
1198
1199             for (y = 0; y < height; y++) {
1200                 for (x = 0; x < width; x++) {
1201                     DWORD color = *src++;
1202                     *dst = (color & 0x00FFFFFF) << 8;
1203                     if ((color < src_d->ddckCKSrcBlt.dwColorSpaceLowValue) ||
1204                         (color > src_d->ddckCKSrcBlt.dwColorSpaceHighValue))
1205                         *dst |= (color & 0xFF000000) >> 24;
1206                     dst++;
1207                 }
1208                 src = (DWORD *) (((BYTE *) src) + line_increase);
1209             }
1210         } break;
1211
1212         case CONVERT_RGB32_888: {
1213             /* Just add an alpha component and handle color-keying... */
1214             int x, y;
1215             DWORD *src = (DWORD *) (((BYTE *) src_d->lpSurface) + (bpp * rect->left) + (src_d->u1.lPitch * rect->top)), *dst;
1216
1217             if (*temp_buffer == NULL)
1218                 *temp_buffer = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
1219                                          current_tex_width * current_tex_height * sizeof(DWORD));
1220             dst = (DWORD *) *temp_buffer;
1221
1222             if (src_d->dwFlags & DDSD_CKSRCBLT) {
1223                 for (y = 0; y < height; y++) {
1224                     for (x = 0; x < width; x++) {
1225                         DWORD color = *src++;
1226                         *dst = color << 8;
1227                         if ((color < src_d->ddckCKSrcBlt.dwColorSpaceLowValue) ||
1228                             (color > src_d->ddckCKSrcBlt.dwColorSpaceHighValue))
1229                             *dst |= 0xFF;
1230                         dst++;
1231                     }
1232                     src = (DWORD *) (((BYTE *) src) + line_increase);
1233                 }
1234             } else {
1235                 for (y = 0; y < height; y++) {
1236                     for (x = 0; x < width; x++) {
1237                         *dst++ = (*src++ << 8) | 0xFF;
1238                     }
1239                     src = (DWORD *) (((BYTE *) src) + line_increase);
1240                 }
1241             }
1242         } break;
1243
1244         case NO_CONVERSION:
1245             /* Nothing to do here as the name suggests... Just set-up the buffer correctly */
1246             surf_buffer = (((BYTE *) src_d->lpSurface) + (bpp * rect->left) + (src_d->u1.lPitch * rect->top));
1247             break;
1248     }
1249
1250     if (convert_type != NO_CONVERSION) {
1251         /* When doing conversion, the storage is always of width 'width' as there will never
1252            be any Pitch issue... For now :-)
1253         */
1254         surf_buffer = *temp_buffer;
1255         if (width != current_storage_width) {
1256             glPixelStorei(GL_UNPACK_ROW_LENGTH, width);
1257             current_storage_width = width;
1258         }
1259     }
1260
1261     glTexSubImage2D(GL_TEXTURE_2D,
1262                     current_level,
1263                     xoffset, yoffset,
1264                     width, height,
1265                     current_format,
1266                     current_pixel_format,
1267                     surf_buffer);
1268
1269     return DD_OK;
1270 }
1271
1272 HRESULT upload_surface_to_tex_memory_release(void)
1273 {
1274     current_surface = NULL;
1275
1276     return DD_OK;
1277 }