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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                 glAlphaFunc(convert_D3D_compare_to_GL(lpStateBlock->render_state[D3DRENDERSTATE_ALPHAFUNC - 1]),
 338                             (lpStateBlock->render_state[D3DRENDERSTATE_ALPHAREF - 1] & 0x000000FF) / 255.0);
 339                 break;
 340
 341             case D3DRENDERSTATE_DITHERENABLE:     /* 26 */
 342                 if (dwRenderState)
 343                     glEnable(GL_DITHER);
 344                 else
 345                     glDisable(GL_DITHER);
 346                 break;
 347
 348             case D3DRENDERSTATE_ALPHABLENDENABLE:   /* 27 */
 349                 if ((dwRenderState != 0) && (glThis->blending == 0)) {
 350                     glEnable(GL_BLEND);
 351                 } else if ((dwRenderState == 0) && (glThis->blending != 0)) {
 352                     glDisable(GL_BLEND);
 353                 }
 354                 glThis->blending = dwRenderState;
 355                 break;
 356
 357             case D3DRENDERSTATE_FOGENABLE: /* 28 */
 358                 /* Nothing to do here. Only the storage matters :-) */
 359                 break;
 360
 361             case D3DRENDERSTATE_SPECULARENABLE: /* 29 */
 362                 if (dwRenderState)
 363                     ERR(" Specular Lighting not supported yet.\n");
 364                 break;
 365
 366             case D3DRENDERSTATE_SUBPIXEL:  /* 31 */
 367             case D3DRENDERSTATE_SUBPIXELX: /* 32 */
 368                 /* We do not support this anyway, so why protest :-) */
 369                 break;
 370
 371             case D3DRENDERSTATE_STIPPLEDALPHA: /* 33 */
 372                 if (dwRenderState)
 373                     ERR(" Stippled Alpha not supported yet.\n");
 374                 break;
 375
 376             case D3DRENDERSTATE_FOGCOLOR: { /* 34 */
 377                 GLfloat color[4];
 378                 color[0] = ((dwRenderState >> 16) & 0xFF)/255.0f;
 379                 color[1] = ((dwRenderState >>  8) & 0xFF)/255.0f;
 380                 color[2] = ((dwRenderState >>  0) & 0xFF)/255.0f;
 381                 color[3] = ((dwRenderState >> 24) & 0xFF)/255.0f;
 382                 glFogfv(GL_FOG_COLOR,color);
 383                 /* Note: glFogiv does not seem to work */
 384             } break;
 385
 386             case D3DRENDERSTATE_FOGTABLEMODE:  /* 35 */
 387             case D3DRENDERSTATE_FOGVERTEXMODE: /* 140 */
 388             case D3DRENDERSTATE_FOGSTART:      /* 36 */
 389             case D3DRENDERSTATE_FOGEND:        /* 37 */
 390                 /* Nothing to do here. Only the storage matters :-) */
 391                 break;
 392
 393             case D3DRENDERSTATE_FOGDENSITY:    /* 38 */
 394                 glFogi(GL_FOG_DENSITY,*(float*)&dwRenderState);
 395                 break;
 396
 397             case D3DRENDERSTATE_COLORKEYENABLE:     /* 41 */
 398                 /* This needs to be fixed. */
 399                 if ((dwRenderState != 0) && (glThis->blending == 0)) {
 400                     glEnable(GL_BLEND);
 401                 } else if ((dwRenderState == 0) && (glThis->blending != 0)) {
 402                     glDisable(GL_BLEND);
 403                 }
 404                 glThis->blending = dwRenderState;
 405                 break;
 406
 407             case D3DRENDERSTATE_MIPMAPLODBIAS: /* 46 */
 408                 IDirect3DDevice7_SetTextureStageState(ICOM_INTERFACE(This, IDirect3DDevice7),
 409                                                       0, D3DTSS_MIPMAPLODBIAS,
 410                                                       dwRenderState);
 411                 break;
 412
 413             case D3DRENDERSTATE_ZBIAS: /* 47 */
 414                 /* This is a tad bit hacky.. But well, no idea how to do it better in OpenGL :-/ */
 415                 if (dwRenderState == 0) {
 416                     glDisable(GL_POLYGON_OFFSET_FILL);
 417                     glDisable(GL_POLYGON_OFFSET_LINE);
 418                     glDisable(GL_POLYGON_OFFSET_POINT);
 419                 } else {
 420                     glEnable(GL_POLYGON_OFFSET_FILL);
 421                     glEnable(GL_POLYGON_OFFSET_LINE);
 422                     glEnable(GL_POLYGON_OFFSET_POINT);
 423                     glPolygonOffset(1.0, dwRenderState * 1.0);
 424                 }
 425                 break;
 426
 427             case D3DRENDERSTATE_FLUSHBATCH:         /* 50 */
 428                 break;
 429
 430             case D3DRENDERSTATE_STENCILENABLE:    /* 52 */
 431                 if ((dwRenderState != 0) && (glThis->stencil_test == 0))
 432                     glEnable(GL_STENCIL_TEST);
 433                 else if ((dwRenderState == 0) && (glThis->stencil_test != 0))
 434                     glDisable(GL_STENCIL_TEST);
 435                 glThis->stencil_test = dwRenderState;
 436                 break;
 437
 438             case D3DRENDERSTATE_STENCILFAIL:      /* 53 */
 439             case D3DRENDERSTATE_STENCILZFAIL:     /* 54 */
 440             case D3DRENDERSTATE_STENCILPASS:      /* 55 */
 441                 glStencilOp(convert_D3D_stencilop_to_GL(lpStateBlock->render_state[D3DRENDERSTATE_STENCILFAIL - 1]),
 442                             convert_D3D_stencilop_to_GL(lpStateBlock->render_state[D3DRENDERSTATE_STENCILZFAIL - 1]),
 443                             convert_D3D_stencilop_to_GL(lpStateBlock->render_state[D3DRENDERSTATE_STENCILPASS - 1]));
 444                 break;
 445
 446             case D3DRENDERSTATE_STENCILFUNC:      /* 56 */
 447             case D3DRENDERSTATE_STENCILREF:       /* 57 */
 448             case D3DRENDERSTATE_STENCILMASK:      /* 58 */
 449                 glStencilFunc(convert_D3D_compare_to_GL(lpStateBlock->render_state[D3DRENDERSTATE_STENCILFUNC - 1]),
 450                               lpStateBlock->render_state[D3DRENDERSTATE_STENCILREF - 1],
 451                               lpStateBlock->render_state[D3DRENDERSTATE_STENCILMASK - 1]);
 452                 break;
 453
 454             case D3DRENDERSTATE_STENCILWRITEMASK: /* 59 */
 455                 glStencilMask(dwRenderState);
 456                 break;
 457
 458             case D3DRENDERSTATE_TEXTUREFACTOR:      /* 60 */
 459                 /* Only the storage matters... */
 460                 break;
 461
 462             case D3DRENDERSTATE_CLIPPING:          /* 136 */
 463             case D3DRENDERSTATE_CLIPPLANEENABLE: { /* 152 */
 464                     GLint i;
 465                     DWORD mask, runner;
 466
 467                     if (dwRenderStateType == D3DRENDERSTATE_CLIPPING) {
 468                         mask = ((dwRenderState) ?
 469                                 (This->state_block.render_state[D3DRENDERSTATE_CLIPPLANEENABLE - 1]) : (0x00000000));
 470                     } else {
 471                         mask = dwRenderState;
 472                     }
 473                     for (i = 0, runner = 0x00000001; i < This->max_clipping_planes; i++, runner = (runner << 1)) {
 474                         if (mask & runner) {
 475                             GLint enabled;
 476                             glGetIntegerv(GL_CLIP_PLANE0 + i, &enabled);
 477                             if (enabled == GL_FALSE) {
 478                                 glEnable(GL_CLIP_PLANE0 + i);
 479                                 /* Need to force a transform change so that this clipping plane parameters are sent
 480                                  * properly to GL.
 481                                  */
 482                                 glThis->transform_state = GL_TRANSFORM_NONE;
 483                             }
 484                         } else {
 485                             glDisable(GL_CLIP_PLANE0 + i);
 486                         }
 487                     }
 488                 }
 489                 break;
 490
 491             case D3DRENDERSTATE_LIGHTING:    /* 137 */
 492                 /* Nothing to do, only storage matters... */
 493                 break;
 494
 495             case D3DRENDERSTATE_AMBIENT: {            /* 139 */
 496                 float light[4];
 497
 498                 light[0] = ((dwRenderState >> 16) & 0xFF) / 255.0;
 499                 light[1] = ((dwRenderState >>  8) & 0xFF) / 255.0;
 500                 light[2] = ((dwRenderState >>  0) & 0xFF) / 255.0;
 501                 light[3] = ((dwRenderState >> 24) & 0xFF) / 255.0;
 502                 glLightModelfv(GL_LIGHT_MODEL_AMBIENT, (float *) light);
 503             } break;
 504
 505             case D3DRENDERSTATE_COLORVERTEX:          /* 141 */
 506                   /* Nothing to do here.. Only storage matters */
 507                   break;
 508
 509             case D3DRENDERSTATE_LOCALVIEWER:          /* 142 */
 510                 if (dwRenderState)
 511                     glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, GL_TRUE);
 512                 else
 513                     glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, GL_FALSE);
 514                 break;
 515
 516             case D3DRENDERSTATE_NORMALIZENORMALS:     /* 143 */
 517                 if (dwRenderState) {
 518                     glEnable(GL_NORMALIZE);
 519                     glEnable(GL_RESCALE_NORMAL);
 520                 } else {
 521                     glDisable(GL_NORMALIZE);
 522                     glDisable(GL_RESCALE_NORMAL);
 523                 }
 524                 break;
 525
 526             case D3DRENDERSTATE_DIFFUSEMATERIALSOURCE:    /* 145 */
 527             case D3DRENDERSTATE_SPECULARMATERIALSOURCE:   /* 146 */
 528             case D3DRENDERSTATE_AMBIENTMATERIALSOURCE:    /* 147 */
 529             case D3DRENDERSTATE_EMISSIVEMATERIALSOURCE:   /* 148 */
 530                 /* Nothing to do here. Only the storage matters :-) */
 531                 break;
 532
 533             default:
 534                 ERR("Unhandled dwRenderStateType %s (%08x) value : %08lx !\n",
 535                     _get_renderstate(dwRenderStateType), dwRenderStateType, dwRenderState);
 536         }
 537         LEAVE_GL();
 538     }
 539 }
 540
 541 void store_render_state(IDirect3DDeviceImpl *This,
 542                         D3DRENDERSTATETYPE dwRenderStateType, DWORD dwRenderState, STATEBLOCK *lpStateBlock)
 543 {
 544     TRACE("%s = %08lx\n", _get_renderstate(dwRenderStateType), dwRenderState);
 545
 546     /* Some special cases first.. */
 547     if (dwRenderStateType == D3DRENDERSTATE_SRCBLEND) {
 548         if (dwRenderState == D3DBLEND_BOTHSRCALPHA) {
 549             lpStateBlock->render_state[D3DRENDERSTATE_SRCBLEND - 1] = D3DBLEND_SRCALPHA;
 550             lpStateBlock->render_state[D3DRENDERSTATE_DESTBLEND - 1] = D3DBLEND_SRCALPHA;
 551             return;
 552         } else if (dwRenderState == D3DBLEND_BOTHINVSRCALPHA) {
 553             lpStateBlock->render_state[D3DRENDERSTATE_SRCBLEND - 1] = D3DBLEND_INVSRCALPHA;
 554             lpStateBlock->render_state[D3DRENDERSTATE_DESTBLEND - 1] = D3DBLEND_INVSRCALPHA;
 555             return;
 556         }
 557     } else if (dwRenderStateType == D3DRENDERSTATE_TEXTUREADDRESS) {
 558         lpStateBlock->render_state[D3DRENDERSTATE_TEXTUREADDRESSU - 1] = dwRenderState;
 559         lpStateBlock->render_state[D3DRENDERSTATE_TEXTUREADDRESSV - 1] = dwRenderState;
 560     } else if (dwRenderStateType == D3DRENDERSTATE_WRAPU) {
 561         if (dwRenderState)
 562             lpStateBlock->render_state[D3DRENDERSTATE_WRAP0] |= D3DWRAP_U;
 563         else
 564             lpStateBlock->render_state[D3DRENDERSTATE_WRAP0] &= ~D3DWRAP_U;
 565     } else if (dwRenderStateType == D3DRENDERSTATE_WRAPV) {
 566         if (dwRenderState)
 567             lpStateBlock->render_state[D3DRENDERSTATE_WRAP0] |= D3DWRAP_V;
 568         else
 569             lpStateBlock->render_state[D3DRENDERSTATE_WRAP0] &= ~D3DWRAP_V;
 570     }
 571
 572     /* Default case */
 573     lpStateBlock->render_state[dwRenderStateType - 1] = dwRenderState;
 574 }
 575
 576 void get_render_state(IDirect3DDeviceImpl *This,
 577                       D3DRENDERSTATETYPE dwRenderStateType, LPDWORD lpdwRenderState, STATEBLOCK *lpStateBlock)
 578 {
 579     *lpdwRenderState = lpStateBlock->render_state[dwRenderStateType - 1];
 580     if (TRACE_ON(ddraw))
 581         TRACE("%s = %08lx\n", _get_renderstate(dwRenderStateType), *lpdwRenderState);
 582 }
 583
 584 void apply_render_state(IDirect3DDeviceImpl *This, STATEBLOCK *lpStateBlock)
 585 {
 586     DWORD i;
 587     TRACE("(%p,%p)\n", This, lpStateBlock);
 588     for(i = 0; i < HIGHEST_RENDER_STATE; i++)
 589         if (lpStateBlock->set_flags.render_state[i])
 590             set_render_state(This, i + 1, lpStateBlock);
 591 }
 592
 593
 594 /* Texture management code.
 595
 596     - upload_surface_to_tex_memory_init initialize the code and computes the GL formats
 597       according to the surface description.
 598
 599     - upload_surface_to_tex_memory does the real upload. If one buffer is split over
 600       multiple textures, this can be called multiple times after the '_init' call. 'rect'
 601       can be NULL if the whole buffer needs to be upload.
 602
 603     - upload_surface_to_tex_memory_release does the clean-up.
 604
 605    These functions are called in the following cases :
 606     - texture management (ie to upload a D3D texture to GL when it changes).
 607     - flush of the 'in-memory' frame buffer to the GL frame buffer using the texture
 608       engine.
 609     - use of the texture engine to simulate Blits to the 3D Device.
 610 */
 611 typedef enum {
 612     NO_CONVERSION,
 613     CONVERT_PALETTED,
 614     CONVERT_CK_565,
 615     CONVERT_CK_5551,
 616     CONVERT_CK_4444,
 617     CONVERT_CK_4444_ARGB,
 618     CONVERT_CK_1555,
 619     CONVERT_555,
 620     CONVERT_CK_RGB24,
 621     CONVERT_CK_8888,
 622     CONVERT_CK_8888_ARGB,
 623     CONVERT_RGB32_888
 624 } CONVERT_TYPES;
 625
 626 /* Note : we suppose that all the code calling this is protected by the GL lock... Otherwise bad things
 627    may happen :-) */
 628 static GLenum current_format;
 629 static GLenum current_pixel_format;
 630 static CONVERT_TYPES convert_type;
 631 static IDirectDrawSurfaceImpl *current_surface;
 632 static GLuint current_level;
 633 static DWORD current_tex_width;
 634 static DWORD current_tex_height;
 635 static GLuint current_alignement_constraints;
 636 static int current_storage_width;
 637
 638 HRESULT upload_surface_to_tex_memory_init(IDirectDrawSurfaceImpl *surf_ptr, GLuint level, GLenum *current_internal_format,
 639                                           BOOLEAN need_to_alloc, BOOLEAN need_alpha_ck, DWORD tex_width, DWORD tex_height)
 640 {
 641     const DDPIXELFORMAT * const src_pf = &(surf_ptr->surface_desc.u4.ddpfPixelFormat);
 642     BOOL error = FALSE;
 643     BOOL colorkey_active = need_alpha_ck && (surf_ptr->surface_desc.dwFlags & DDSD_CKSRCBLT);
 644     GLenum internal_format = GL_LUMINANCE; /* A bogus value to be sure to have a nice Mesa warning :-) */
 645     BYTE bpp = GET_BPP(surf_ptr->surface_desc);
 646     BOOL sub_texture = TRUE;
 647
 648     current_surface = surf_ptr;
 649     current_level = level;
 650
 651     /* First, do some sanity checks ... */
 652     if ((surf_ptr->surface_desc.u1.lPitch % bpp) != 0) {
 653         FIXME("Warning : pitch is not a multiple of BPP - not supported yet !\n");
 654     } else {
 655         /* In that case, no need to have any alignement constraints... */
 656         if (current_alignement_constraints != 1) {
 657             glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
 658             current_alignement_constraints = 1;
 659         }
 660     }
 661
 662     /* Note: we only check width here as you cannot have width non-zero while height is set to zero */
 663     if (tex_width == 0) {
 664         sub_texture = FALSE;
 665
 666         tex_width = surf_ptr->surface_desc.dwWidth;
 667         tex_height = surf_ptr->surface_desc.dwHeight;
 668     }
 669
 670     current_tex_width = tex_width;
 671     current_tex_height = tex_height;
 672
 673     if (src_pf->dwFlags & DDPF_PALETTEINDEXED8) {
 674         /* ****************
 675            Paletted Texture
 676            **************** */
 677         current_format = GL_RGBA;
 678         internal_format = GL_RGBA;
 679         current_pixel_format = GL_UNSIGNED_BYTE;
 680         convert_type = CONVERT_PALETTED;
 681     } else if (src_pf->dwFlags & DDPF_RGB) {
 682         /* ************
 683            RGB Textures
 684            ************ */
 685         if (src_pf->u1.dwRGBBitCount == 8) {
 686             if ((src_pf->dwFlags & DDPF_ALPHAPIXELS) &&
 687                 (src_pf->u5.dwRGBAlphaBitMask != 0x00)) {
 688                 error = TRUE;
 689             } else {
 690                 if ((src_pf->u2.dwRBitMask == 0xE0) &&
 691                     (src_pf->u3.dwGBitMask == 0x1C) &&
 692                     (src_pf->u4.dwBBitMask == 0x03)) {
 693                     /* **********************
 694                        GL_UNSIGNED_BYTE_3_3_2
 695                        ********************** */
 696                     if (colorkey_active) {
 697                         /* This texture format will never be used.. So do not care about color keying
 698                            up until the point in time it will be needed :-) */
 699                         FIXME(" ColorKeying not supported in the RGB 332 format !");
 700                     }
 701                     current_format = GL_RGB;
 702                     internal_format = GL_RGB;
 703                     current_pixel_format = GL_UNSIGNED_BYTE_3_3_2;
 704                     convert_type = NO_CONVERSION;
 705                 } else {
 706                     error = TRUE;
 707                 }
 708             }
 709         } else if (src_pf->u1.dwRGBBitCount == 16) {
 710             if ((src_pf->dwFlags & DDPF_ALPHAPIXELS) &&
 711                 (src_pf->u5.dwRGBAlphaBitMask != 0x0000)) {
 712                 if ((src_pf->u2.dwRBitMask ==        0xF800) &&
 713                     (src_pf->u3.dwGBitMask ==        0x07C0) &&
 714                     (src_pf->u4.dwBBitMask ==        0x003E) &&
 715                     (src_pf->u5.dwRGBAlphaBitMask == 0x0001)) {
 716                     current_format = GL_RGBA;
 717                     internal_format = GL_RGBA;
 718                     current_pixel_format = GL_UNSIGNED_SHORT_5_5_5_1;
 719                     if (colorkey_active) {
 720                         convert_type = CONVERT_CK_5551;
 721                     } else {
 722                         convert_type = NO_CONVERSION;
 723                     }
 724                 } else if ((src_pf->u2.dwRBitMask ==        0xF000) &&
 725                            (src_pf->u3.dwGBitMask ==        0x0F00) &&
 726                            (src_pf->u4.dwBBitMask ==        0x00F0) &&
 727                            (src_pf->u5.dwRGBAlphaBitMask == 0x000F)) {
 728                     current_format = GL_RGBA;
 729                     internal_format = GL_RGBA;
 730                     current_pixel_format = GL_UNSIGNED_SHORT_4_4_4_4;
 731                     if (colorkey_active) {
 732                         convert_type = CONVERT_CK_4444;
 733                     } else {
 734                         convert_type = NO_CONVERSION;
 735                     }
 736                 } else if ((src_pf->u2.dwRBitMask ==        0x0F00) &&
 737                            (src_pf->u3.dwGBitMask ==        0x00F0) &&
 738                            (src_pf->u4.dwBBitMask ==        0x000F) &&
 739                            (src_pf->u5.dwRGBAlphaBitMask == 0xF000)) {
 740                     if (colorkey_active) {
 741                         convert_type = CONVERT_CK_4444_ARGB;
 742                         current_format = GL_RGBA;
 743                         internal_format = GL_RGBA;
 744                         current_pixel_format = GL_UNSIGNED_SHORT_4_4_4_4;
 745                     } else {
 746                         convert_type = NO_CONVERSION;
 747                         current_format = GL_BGRA;
 748                         internal_format = GL_RGBA;
 749                         current_pixel_format = GL_UNSIGNED_SHORT_4_4_4_4_REV;
 750                     }
 751                 } else if ((src_pf->u2.dwRBitMask ==        0x7C00) &&
 752                            (src_pf->u3.dwGBitMask ==        0x03E0) &&
 753                            (src_pf->u4.dwBBitMask ==        0x001F) &&
 754                            (src_pf->u5.dwRGBAlphaBitMask == 0x8000)) {
 755                     if (colorkey_active) {
 756                         convert_type = CONVERT_CK_1555;
 757                         current_format = GL_RGBA;
 758                         internal_format = GL_RGBA;
 759                         current_pixel_format = GL_UNSIGNED_SHORT_5_5_5_1;
 760                     } else {
 761                         convert_type = NO_CONVERSION;
 762                         current_format = GL_BGRA;
 763                         internal_format = GL_RGBA;
 764                         current_pixel_format = GL_UNSIGNED_SHORT_1_5_5_5_REV;
 765                     }
 766                 } else {
 767                     error = TRUE;
 768                 }
 769             } else {
 770                 if ((src_pf->u2.dwRBitMask == 0xF800) &&
 771                     (src_pf->u3.dwGBitMask == 0x07E0) &&
 772                     (src_pf->u4.dwBBitMask == 0x001F)) {
 773                     if (colorkey_active) {
 774                         convert_type = CONVERT_CK_565;
 775                         current_format = GL_RGBA;
 776                         internal_format = GL_RGBA;
 777                         current_pixel_format = GL_UNSIGNED_SHORT_5_5_5_1;
 778                     } else {
 779                         convert_type = NO_CONVERSION;
 780                         current_format = GL_RGB;
 781                         internal_format = GL_RGB;
 782                         current_pixel_format = GL_UNSIGNED_SHORT_5_6_5;
 783                     }
 784                 } else if ((src_pf->u2.dwRBitMask == 0x7C00) &&
 785                            (src_pf->u3.dwGBitMask == 0x03E0) &&
 786                            (src_pf->u4.dwBBitMask == 0x001F)) {
 787                     convert_type = CONVERT_555;
 788                     current_format = GL_RGBA;
 789                     internal_format = GL_RGBA;
 790                     current_pixel_format = GL_UNSIGNED_SHORT_5_5_5_1;
 791                 } else {
 792                     error = TRUE;
 793                 }
 794             }
 795         } else if (src_pf->u1.dwRGBBitCount == 24) {
 796             if ((src_pf->dwFlags & DDPF_ALPHAPIXELS) &&
 797                 (src_pf->u5.dwRGBAlphaBitMask != 0x000000)) {
 798                 error = TRUE;
 799             } else {
 800                 if ((src_pf->u2.dwRBitMask == 0xFF0000) &&
 801                     (src_pf->u3.dwGBitMask == 0x00FF00) &&
 802                     (src_pf->u4.dwBBitMask == 0x0000FF)) {
 803                     if (colorkey_active) {
 804                         convert_type = CONVERT_CK_RGB24;
 805                         current_format = GL_RGBA;
 806                         internal_format = GL_RGBA;
 807                         current_pixel_format = GL_UNSIGNED_INT_8_8_8_8;
 808                     } else {
 809                         convert_type = NO_CONVERSION;
 810                         current_format = GL_BGR;
 811                         internal_format = GL_RGB;
 812                         current_pixel_format = GL_UNSIGNED_BYTE;
 813                     }
 814                 } else {
 815                     error = TRUE;
 816                 }
 817             }
 818         } else if (src_pf->u1.dwRGBBitCount == 32) {
 819             if ((src_pf->dwFlags & DDPF_ALPHAPIXELS) &&
 820                 (src_pf->u5.dwRGBAlphaBitMask != 0x00000000)) {
 821                 if ((src_pf->u2.dwRBitMask ==        0xFF000000) &&
 822                     (src_pf->u3.dwGBitMask ==        0x00FF0000) &&
 823                     (src_pf->u4.dwBBitMask ==        0x0000FF00) &&
 824                     (src_pf->u5.dwRGBAlphaBitMask == 0x000000FF)) {
 825                     if (colorkey_active) {
 826                         convert_type = CONVERT_CK_8888;
 827                     } else {
 828                         convert_type = NO_CONVERSION;
 829                     }
 830                     current_format = GL_RGBA;
 831                     internal_format = GL_RGBA;
 832                     current_pixel_format = GL_UNSIGNED_INT_8_8_8_8;
 833                 } else if ((src_pf->u2.dwRBitMask ==        0x00FF0000) &&
 834                            (src_pf->u3.dwGBitMask ==        0x0000FF00) &&
 835                            (src_pf->u4.dwBBitMask ==        0x000000FF) &&
 836                            (src_pf->u5.dwRGBAlphaBitMask == 0xFF000000)) {
 837                     if (colorkey_active) {
 838                         convert_type = CONVERT_CK_8888_ARGB;
 839                         current_format = GL_RGBA;
 840                         internal_format = GL_RGBA;
 841                         current_pixel_format = GL_UNSIGNED_INT_8_8_8_8;
 842                     } else {
 843                         convert_type = NO_CONVERSION;
 844                         current_format = GL_BGRA;
 845                         internal_format = GL_RGBA;
 846                         current_pixel_format = GL_UNSIGNED_INT_8_8_8_8_REV;
 847                     }
 848                 } else {
 849                     error = TRUE;
 850                 }
 851             } else {
 852                 if ((src_pf->u2.dwRBitMask == 0x00FF0000) &&
 853                     (src_pf->u3.dwGBitMask == 0x0000FF00) &&
 854                     (src_pf->u4.dwBBitMask == 0x000000FF)) {
 855                     if (need_alpha_ck == TRUE) {
 856                         convert_type = CONVERT_RGB32_888;
 857                         current_format = GL_RGBA;
 858                         internal_format = GL_RGBA;
 859                         current_pixel_format = GL_UNSIGNED_INT_8_8_8_8;
 860                     } else {
 861                         convert_type = NO_CONVERSION;
 862                         current_format = GL_BGRA;
 863                         internal_format = GL_RGBA;
 864                         current_pixel_format = GL_UNSIGNED_INT_8_8_8_8_REV;
 865                     }
 866                 } else {
 867                     error = TRUE;
 868                 }
 869             }
 870         } else {
 871             error = TRUE;
 872         }
 873     } else {
 874         error = TRUE;
 875     }
 876
 877     if (error == TRUE) {
 878         ERR("Unsupported pixel format for textures : \n");
 879         if (ERR_ON(ddraw)) {
 880             DDRAW_dump_pixelformat(src_pf);
 881         }
 882         return DDERR_INVALIDPIXELFORMAT;
 883     } else {
 884         if ((need_to_alloc) ||
 885             (internal_format != *current_internal_format)) {
 886             glTexImage2D(GL_TEXTURE_2D, level, internal_format,
 887                          tex_width, tex_height, 0,
 888                          current_format, current_pixel_format, NULL);
 889             *current_internal_format = internal_format;
 890         }
 891     }
 892
 893     if ((sub_texture == TRUE) && (convert_type == NO_CONVERSION)) {
 894         current_storage_width = surf_ptr->surface_desc.u1.lPitch / bpp;
 895     } else {
 896         if (surf_ptr->surface_desc.u1.lPitch == (surf_ptr->surface_desc.dwWidth * bpp)) {
 897             current_storage_width = 0;
 898         } else {
 899             current_storage_width = surf_ptr->surface_desc.u1.lPitch / bpp;
 900         }
 901     }
 902     glPixelStorei(GL_UNPACK_ROW_LENGTH, current_storage_width);
 903
 904     return DD_OK;
 905 }
 906
 907 HRESULT upload_surface_to_tex_memory(RECT *rect, DWORD xoffset, DWORD yoffset, void **temp_buffer)
 908 {
 909     const DDSURFACEDESC * const src_d = (DDSURFACEDESC *)&(current_surface->surface_desc);
 910     void *surf_buffer = NULL;
 911     RECT lrect;
 912     DWORD width, height;
 913     BYTE bpp = GET_BPP(current_surface->surface_desc);
 914     int line_increase;
 915
 916     if (rect == NULL) {
 917         lrect.top = 0;
 918         lrect.left = 0;
 919         lrect.bottom = current_tex_height;
 920         lrect.right = current_tex_width;
 921         rect = &lrect;
 922     }
 923
 924     width = rect->right - rect->left;
 925     height = rect->bottom - rect->top;
 926
 927     /* Used when converting stuff */
 928     line_increase = src_d->u1.lPitch - (width * bpp);
 929
 930     switch (convert_type) {
 931         case CONVERT_PALETTED: {
 932             IDirectDrawPaletteImpl* pal = current_surface->palette;
 933             BYTE table[256][4];
 934             int i;
 935             int x, y;
 936             BYTE *src = (BYTE *) (((BYTE *) src_d->lpSurface) + (bpp * rect->left) + (src_d->u1.lPitch * rect->top)), *dst;
 937
 938             if (pal == NULL) {
 939                 /* Upload a black texture. The real one will be uploaded on palette change */
 940                 WARN("Palettized texture Loading with a NULL palette !\n");
 941                 memset(table, 0, 256 * 4);
 942             } else {
 943                 /* Get the surface's palette */
 944                 for (i = 0; i < 256; i++) {
 945                     table[i][0] = pal->palents[i].peRed;
 946                     table[i][1] = pal->palents[i].peGreen;
 947                     table[i][2] = pal->palents[i].peBlue;
 948                     if ((src_d->dwFlags & DDSD_CKSRCBLT) &&
 949                         (i >= src_d->ddckCKSrcBlt.dwColorSpaceLowValue) &&
 950                         (i <= src_d->ddckCKSrcBlt.dwColorSpaceHighValue))
 951                         /* We should maybe here put a more 'neutral' color than the standard bright purple
 952                            one often used by application to prevent the nice purple borders when bi-linear
 953                            filtering is on */
 954                         table[i][3] = 0x00;
 955                     else
 956                         table[i][3] = 0xFF;
 957                 }
 958             }
 959
 960             if (*temp_buffer == NULL)
 961                 *temp_buffer = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
 962                                          current_tex_width * current_tex_height * sizeof(DWORD));
 963             dst = (BYTE *) *temp_buffer;
 964
 965             for (y = 0; y < height; y++) {
 966                 for (x = 0; x < width; x++) {
 967                     BYTE color = *src++;
 968                     *dst++ = table[color][0];
 969                     *dst++ = table[color][1];
 970                     *dst++ = table[color][2];
 971                     *dst++ = table[color][3];
 972                 }
 973                 src += line_increase;
 974             }
 975         } break;
 976
 977         case CONVERT_CK_565: {
 978             /* Converting the 565 format in 5551 packed to emulate color-keying.
 979
 980                Note : in all these conversion, it would be best to average the averaging
 981                       pixels to get the color of the pixel that will be color-keyed to
 982                       prevent 'color bleeding'. This will be done later on if ever it is
 983                       too visible.
 984
 985                Note2: when using color-keying + alpha, are the alpha bits part of the
 986                       color-space or not ?
 987             */
 988             int x, y;
 989             WORD *src = (WORD *) (((BYTE *) src_d->lpSurface) + (bpp * rect->left) + (src_d->u1.lPitch * rect->top)), *dst;
 990
 991             if (*temp_buffer == NULL)
 992                 *temp_buffer = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
 993                                          current_tex_width * current_tex_height * sizeof(WORD));
 994             dst = (WORD *) *temp_buffer;
 995
 996             for (y = 0; y < height; y++) {
 997                 for (x = 0; x < width; x++) {
 998                     WORD color = *src++;
 999                     *dst = ((color & 0xFFD0) | ((color & 0x1F) << 1));
1000                     if ((color < src_d->ddckCKSrcBlt.dwColorSpaceLowValue) ||
1001                         (color > src_d->ddckCKSrcBlt.dwColorSpaceHighValue))
1002                         *dst |= 0x0001;
1003                     dst++;
1004                 }
1005                 src = (WORD *) (((BYTE *) src) + line_increase);
1006             }
1007         } break;
1008
1009         case CONVERT_CK_5551: {
1010             /* Change the alpha value of the color-keyed pixels to emulate color-keying. */
1011             int x, y;
1012             WORD *src = (WORD *) (((BYTE *) src_d->lpSurface) + (bpp * rect->left) + (src_d->u1.lPitch * rect->top)), *dst;
1013
1014             if (*temp_buffer == NULL)
1015                 *temp_buffer = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
1016                                          current_tex_width * current_tex_height * sizeof(WORD));
1017             dst = (WORD *) *temp_buffer;
1018
1019             for (y = 0; y < height; y++) {
1020                 for (x = 0; x < width; x++) {
1021                     WORD color = *src++;
1022                     *dst = color & 0xFFFE;
1023                     if ((color < src_d->ddckCKSrcBlt.dwColorSpaceLowValue) ||
1024                         (color > src_d->ddckCKSrcBlt.dwColorSpaceHighValue))
1025                         *dst |= color & 0x0001;
1026                     dst++;
1027                 }
1028                 src = (WORD *) (((BYTE *) src) + line_increase);
1029             }
1030         } break;
1031
1032         case CONVERT_CK_4444: {
1033             /* Change the alpha value of the color-keyed pixels to emulate color-keying. */
1034             int x, y;
1035             WORD *src = (WORD *) (((BYTE *) src_d->lpSurface) + (bpp * rect->left) + (src_d->u1.lPitch * rect->top)), *dst;
1036
1037             if (*temp_buffer == NULL)
1038                 *temp_buffer = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
1039                                          current_tex_width * current_tex_height * sizeof(WORD));
1040             dst = (WORD *) *temp_buffer;
1041
1042             for (y = 0; y < height; y++) {
1043                 for (x = 0; x < width; x++) {
1044                     WORD color = *src++;
1045                     *dst = color & 0xFFF0;
1046                     if ((color < src_d->ddckCKSrcBlt.dwColorSpaceLowValue) ||
1047                         (color > src_d->ddckCKSrcBlt.dwColorSpaceHighValue))
1048                         *dst |= color & 0x000F;
1049                     dst++;
1050                 }
1051                 src = (WORD *) (((BYTE *) src) + line_increase);
1052             }
1053         } break;
1054
1055         case CONVERT_CK_4444_ARGB: {
1056             /* Move the four Alpha bits... */
1057             int x, y;
1058             WORD *src = (WORD *) (((BYTE *) src_d->lpSurface) + (bpp * rect->left) + (src_d->u1.lPitch * rect->top)), *dst;
1059
1060             if (*temp_buffer == NULL)
1061                 *temp_buffer = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
1062                                          current_tex_width * current_tex_height * sizeof(WORD));
1063             dst = (WORD *) *temp_buffer;
1064
1065             for (y = 0; y < height; y++) {
1066                 for (x = 0; x < width; x++) {
1067                     WORD color = *src++;
1068                     *dst = (color & 0x0FFF) << 4;
1069                     if ((color < src_d->ddckCKSrcBlt.dwColorSpaceLowValue) ||
1070                         (color > src_d->ddckCKSrcBlt.dwColorSpaceHighValue))
1071                         *dst |= (color & 0xF000) >> 12;
1072                     dst++;
1073                 }
1074                 src = (WORD *) (((BYTE *) src) + line_increase);
1075             }
1076         } break;
1077
1078         case CONVERT_CK_1555: {
1079             int x, y;
1080             WORD *src = (WORD *) (((BYTE *) src_d->lpSurface) + (bpp * rect->left) + (src_d->u1.lPitch * rect->top)), *dst;
1081
1082             if (*temp_buffer == NULL)
1083                 *temp_buffer = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
1084                                          current_tex_width * current_tex_height * sizeof(WORD));
1085             dst = (WORD *) *temp_buffer;
1086
1087             for (y = 0; y < height; y++) {
1088                 for (x = 0; x < width; x++) {
1089                     WORD color = *src++;
1090                     *dst = (color & 0x7FFF) << 1;
1091                     if ((color < src_d->ddckCKSrcBlt.dwColorSpaceLowValue) ||
1092                         (color > src_d->ddckCKSrcBlt.dwColorSpaceHighValue))
1093                         *dst |= (color & 0x8000) >> 15;
1094                     dst++;
1095                 }
1096                 src = (WORD *) (((BYTE *) src) + line_increase);
1097             }
1098         } break;
1099
1100         case CONVERT_555: {
1101             /* Converting the 0555 format in 5551 packed */
1102             int x, y;
1103             WORD *src = (WORD *) (((BYTE *) src_d->lpSurface) + (bpp * rect->left) + (src_d->u1.lPitch * rect->top)), *dst;
1104
1105             if (*temp_buffer == NULL)
1106                 *temp_buffer = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
1107                                          current_tex_width * current_tex_height * sizeof(WORD));
1108             dst = (WORD *) *temp_buffer;
1109
1110             if (src_d->dwFlags & DDSD_CKSRCBLT) {
1111                 for (y = 0; y < height; y++) {
1112                     for (x = 0; x < width; x++) {
1113                         WORD color = *src++;
1114                         *dst = (color & 0x7FFF) << 1;
1115                         if ((color < src_d->ddckCKSrcBlt.dwColorSpaceLowValue) ||
1116                             (color > src_d->ddckCKSrcBlt.dwColorSpaceHighValue))
1117                             *dst |= 0x0001;
1118                         dst++;
1119                     }
1120                     src = (WORD *) (((BYTE *) src) + line_increase);
1121                 }
1122             } else {
1123                 for (y = 0; y < height; y++) {
1124                     for (x = 0; x < width; x++) {
1125                         WORD color = *src++;
1126                         *dst++ = ((color & 0x7FFF) << 1) | 0x0001;
1127                     }
1128                     src = (WORD *) (((BYTE *) src) + line_increase);
1129                 }
1130             }
1131
1132         } break;
1133
1134         case CONVERT_CK_RGB24: {
1135             /* This is a pain :-) */
1136             int x, y;
1137             BYTE *src = (BYTE *) (((BYTE *) src_d->lpSurface) + (bpp * rect->left) + (src_d->u1.lPitch * rect->top));
1138             DWORD *dst;
1139
1140             if (*temp_buffer == NULL)
1141                 *temp_buffer = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
1142                                          current_tex_width * current_tex_height * sizeof(DWORD));
1143             dst = (DWORD *) *temp_buffer;
1144
1145             for (y = 0; y < height; y++) {
1146                 for (x = 0; x < width; x++) {
1147                     DWORD color = *((DWORD *) src) & 0x00FFFFFF;
1148                     src += 3;
1149                     *dst = *src++ << 8;
1150                     if ((color < src_d->ddckCKSrcBlt.dwColorSpaceLowValue) ||
1151                         (color > src_d->ddckCKSrcBlt.dwColorSpaceHighValue))
1152                         *dst |= 0xFF;
1153                     dst++;
1154                 }
1155                 src += line_increase;
1156             }
1157         } break;
1158
1159         case CONVERT_CK_8888: {
1160             /* Just use the alpha component to handle color-keying... */
1161             int x, y;
1162             DWORD *src = (DWORD *) (((BYTE *) src_d->lpSurface) + (bpp * rect->left) + (src_d->u1.lPitch * rect->top)), *dst;
1163
1164             if (*temp_buffer == NULL)
1165                 *temp_buffer = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
1166                                          current_tex_width * current_tex_height * sizeof(DWORD));
1167             dst = (DWORD *) *temp_buffer;
1168
1169             for (y = 0; y < height; y++) {
1170                 for (x = 0; x < width; x++) {
1171                     DWORD color = *src++;
1172                     *dst = color & 0xFFFFFF00;
1173                     if ((color < src_d->ddckCKSrcBlt.dwColorSpaceLowValue) ||
1174                         (color > src_d->ddckCKSrcBlt.dwColorSpaceHighValue))
1175                         *dst |= color & 0x000000FF;
1176                     dst++;
1177                 }
1178                 src = (DWORD *) (((BYTE *) src) + line_increase);
1179             }
1180         } break;
1181
1182         case CONVERT_CK_8888_ARGB: {
1183             int x, y;
1184             DWORD *src = (DWORD *) (((BYTE *) src_d->lpSurface) + (bpp * rect->left) + (src_d->u1.lPitch * rect->top)), *dst;
1185
1186             if (*temp_buffer == NULL)
1187                 *temp_buffer = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
1188                                          current_tex_width * current_tex_height * sizeof(DWORD));
1189             dst = (DWORD *) *temp_buffer;
1190
1191             for (y = 0; y < height; y++) {
1192                 for (x = 0; x < width; x++) {
1193                     DWORD color = *src++;
1194                     *dst = (color & 0x00FFFFFF) << 8;
1195                     if ((color < src_d->ddckCKSrcBlt.dwColorSpaceLowValue) ||
1196                         (color > src_d->ddckCKSrcBlt.dwColorSpaceHighValue))
1197                         *dst |= (color & 0xFF000000) >> 24;
1198                     dst++;
1199                 }
1200                 src = (DWORD *) (((BYTE *) src) + line_increase);
1201             }
1202         } break;
1203
1204         case CONVERT_RGB32_888: {
1205             /* Just add an alpha component and handle color-keying... */
1206             int x, y;
1207             DWORD *src = (DWORD *) (((BYTE *) src_d->lpSurface) + (bpp * rect->left) + (src_d->u1.lPitch * rect->top)), *dst;
1208
1209             if (*temp_buffer == NULL)
1210                 *temp_buffer = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
1211                                          current_tex_width * current_tex_height * sizeof(DWORD));
1212             dst = (DWORD *) *temp_buffer;
1213
1214             if (src_d->dwFlags & DDSD_CKSRCBLT) {
1215                 for (y = 0; y < height; y++) {
1216                     for (x = 0; x < width; x++) {
1217                         DWORD color = *src++;
1218                         *dst = color << 8;
1219                         if ((color < src_d->ddckCKSrcBlt.dwColorSpaceLowValue) ||
1220                             (color > src_d->ddckCKSrcBlt.dwColorSpaceHighValue))
1221                             *dst |= 0xFF;
1222                         dst++;
1223                     }
1224                     src = (DWORD *) (((BYTE *) src) + line_increase);
1225                 }
1226             } else {
1227                 for (y = 0; y < height; y++) {
1228                     for (x = 0; x < width; x++) {
1229                         *dst++ = (*src++ << 8) | 0xFF;
1230                     }
1231                     src = (DWORD *) (((BYTE *) src) + line_increase);
1232                 }
1233             }
1234         } break;
1235
1236         case NO_CONVERSION:
1237             /* Nothing to do here as the name suggests... Just set-up the buffer correctly */
1238             surf_buffer = (((BYTE *) src_d->lpSurface) + (bpp * rect->left) + (src_d->u1.lPitch * rect->top));
1239             break;
1240     }
1241
1242     if (convert_type != NO_CONVERSION) {
1243         /* When doing conversion, the storage is always of width 'width' as there will never
1244            be any Pitch issue... For now :-)
1245         */
1246         surf_buffer = *temp_buffer;
1247         if (width != current_storage_width) {
1248             glPixelStorei(GL_UNPACK_ROW_LENGTH, width);
1249             current_storage_width = width;
1250         }
1251     }
1252
1253     glTexSubImage2D(GL_TEXTURE_2D,
1254                     current_level,
1255                     xoffset, yoffset,
1256                     width, height,
1257                     current_format,
1258                     current_pixel_format,
1259                     surf_buffer);
1260
1261     return DD_OK;
1262 }
1263
1264 HRESULT upload_surface_to_tex_memory_release(void)
1265 {
1266     current_surface = NULL;
1267
1268     return DD_OK;
1269 }