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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 "windef.h"
  24 #include "objbase.h"
  25 #include "ddraw.h"
  26 #include "d3d.h"
  27 #include "wine/debug.h"
  28
  29 #include "mesa_private.h"
  30
  31 WINE_DEFAULT_DEBUG_CHANNEL(ddraw);
  32
  33 GLenum convert_D3D_compare_to_GL(D3DCMPFUNC dwRenderState)
  34 {
  35     switch (dwRenderState) {
  36         case D3DCMP_NEVER: return GL_NEVER;
  37         case D3DCMP_LESS: return GL_LESS;
  38         case D3DCMP_EQUAL: return GL_EQUAL;
  39         case D3DCMP_LESSEQUAL: return GL_LEQUAL;
  40         case D3DCMP_GREATER: return GL_GREATER;
  41         case D3DCMP_NOTEQUAL: return GL_NOTEQUAL;
  42         case D3DCMP_GREATEREQUAL: return GL_GEQUAL;
  43         case D3DCMP_ALWAYS: return GL_ALWAYS;
  44         default: ERR("Unexpected compare type %d !\n", dwRenderState);
  45     }
  46     return GL_ALWAYS;
  47 }
  48
  49
  50 void set_render_state(D3DRENDERSTATETYPE dwRenderStateType,
  51                       DWORD dwRenderState, RenderState *rs)
  52 {
  53     if (TRACE_ON(ddraw))
  54         TRACE("%s = %08lx\n", _get_renderstate(dwRenderStateType), dwRenderState);
  55
  56     /* First, all the stipple patterns */
  57     if ((dwRenderStateType >= D3DRENDERSTATE_STIPPLEPATTERN00) &&
  58         (dwRenderStateType <= D3DRENDERSTATE_STIPPLEPATTERN31)) {
  59         ERR("Unhandled dwRenderStateType stipple %d!\n",dwRenderStateType);
  60     } else {
  61         ENTER_GL();
  62
  63         /* All others state variables */
  64         switch (dwRenderStateType) {
  65             case D3DRENDERSTATE_TEXTUREHANDLE: {    /*  1 */
  66                 IDirectDrawSurfaceImpl *tex = (IDirectDrawSurfaceImpl*) dwRenderState;
  67
  68                 if (tex == NULL) {
  69                     glBindTexture(GL_TEXTURE_2D, 0);
  70                     glDisable(GL_TEXTURE_2D);
  71                     TRACE("disabling texturing\n");
  72                 } else {
  73                     IDirect3DTextureGLImpl *gl_tex = (IDirect3DTextureGLImpl *) tex->tex_private;
  74
  75                     glEnable(GL_TEXTURE_2D);
  76                     /* Default parameters */
  77                     glBindTexture(GL_TEXTURE_2D, gl_tex->tex_name);
  78                     /* To prevent state change, we could test here what are the parameters
  79                        stored in the texture */
  80                     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, rs->mag);
  81                     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, rs->min);
  82                     TRACE("setting OpenGL texture handle : %d\n", gl_tex->tex_name);
  83                 }
  84             } break;
  85
  86
  87             case D3DRENDERSTATE_TEXTUREADDRESSU:  /* 44 */
  88             case D3DRENDERSTATE_TEXTUREADDRESSV:  /* 45 */
  89             case D3DRENDERSTATE_TEXTUREADDRESS: { /*  3 */
  90                 GLenum arg = GL_REPEAT; /* Default value */
  91                 switch ((D3DTEXTUREADDRESS) dwRenderState) {
  92                     case D3DTADDRESS_WRAP:   arg = GL_REPEAT; break;
  93                     case D3DTADDRESS_CLAMP:  arg = GL_CLAMP; break;
  94                     case D3DTADDRESS_BORDER: arg = GL_CLAMP_TO_EDGE; break;
  95                     default: ERR("Unhandled TEXTUREADDRESS mode %ld !\n", dwRenderState);
  96                 }
  97                 if ((dwRenderStateType == D3DRENDERSTATE_TEXTUREADDRESSU) ||
  98                     (dwRenderStateType == D3DRENDERSTATE_TEXTUREADDRESS))
  99                     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, arg);
 100                 if ((dwRenderStateType == D3DRENDERSTATE_TEXTUREADDRESSV) ||
 101                     (dwRenderStateType == D3DRENDERSTATE_TEXTUREADDRESS))
 102                     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, arg);
 103             } break;
 104
 105             case D3DRENDERSTATE_TEXTUREPERSPECTIVE: /* 4 */
 106                 if (dwRenderState)
 107                     glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
 108                 else
 109                     glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_FASTEST);
 110                 break;
 111
 112             case D3DRENDERSTATE_ZENABLE:          /*  7 */
 113                 if (dwRenderState)
 114                     glEnable(GL_DEPTH_TEST);
 115                 else
 116                     glDisable(GL_DEPTH_TEST);
 117                 break;
 118
 119             case D3DRENDERSTATE_FILLMODE:           /*  8 */
 120                 switch ((D3DFILLMODE) dwRenderState) {
 121                     case D3DFILL_POINT:
 122                         glPolygonMode(GL_FRONT_AND_BACK,GL_POINT);
 123                         break;
 124                     case D3DFILL_WIREFRAME:
 125                         glPolygonMode(GL_FRONT_AND_BACK,GL_LINE);
 126                         break;
 127                     case D3DFILL_SOLID:
 128                         glPolygonMode(GL_FRONT_AND_BACK,GL_FILL);
 129                         break;
 130                     default:
 131                         ERR("Unhandled fill mode %ld !\n",dwRenderState);
 132                  }
 133                  break;
 134
 135             case D3DRENDERSTATE_SHADEMODE:          /*  9 */
 136                 switch ((D3DSHADEMODE) dwRenderState) {
 137                     case D3DSHADE_FLAT:
 138                         glShadeModel(GL_FLAT);
 139                         break;
 140                     case D3DSHADE_GOURAUD:
 141                         glShadeModel(GL_SMOOTH);
 142                         break;
 143                     default:
 144                         ERR("Unhandled shade mode %ld !\n",dwRenderState);
 145                 }
 146                 break;
 147
 148             case D3DRENDERSTATE_ZWRITEENABLE:     /* 14 */
 149                 if (dwRenderState)
 150                     glDepthMask(GL_TRUE);
 151                 else
 152                     glDepthMask(GL_FALSE);
 153                 break;
 154
 155             case D3DRENDERSTATE_ALPHATESTENABLE:  /* 15 */
 156                 if (dwRenderState)
 157                     glEnable(GL_ALPHA_TEST);
 158                 else
 159                     glDisable(GL_ALPHA_TEST);
 160                 break;
 161
 162             case D3DRENDERSTATE_TEXTUREMAG:       /* 17 */
 163                 switch ((D3DTEXTUREFILTER) dwRenderState) {
 164                     case D3DFILTER_NEAREST:
 165                         rs->mag = GL_NEAREST;
 166                         break;
 167                     case D3DFILTER_LINEAR:
 168                         rs->mag = GL_LINEAR;
 169                         break;
 170                     default:
 171                         ERR("Unhandled texture mag %ld !\n",dwRenderState);
 172                 }
 173                 break;
 174
 175             case D3DRENDERSTATE_TEXTUREMIN:         /* 18 */
 176                 switch ((D3DTEXTUREFILTER) dwRenderState) {
 177                     case D3DFILTER_NEAREST:
 178                         rs->min = GL_NEAREST;
 179                         break;
 180                     case D3DFILTER_LINEAR:
 181                         rs->mag = GL_LINEAR;
 182                         break;
 183                     default:
 184                         ERR("Unhandled texture min %ld !\n",dwRenderState);
 185                 }
 186                 break;
 187
 188             case D3DRENDERSTATE_SRCBLEND:           /* 19 */
 189                 switch ((D3DBLEND) dwRenderState) {
 190                     case D3DBLEND_ONE:
 191                           rs->src = GL_ONE;
 192                           break;
 193                     case D3DBLEND_SRCALPHA:
 194                           rs->src = GL_SRC_ALPHA;
 195                           break;
 196                     default:
 197                           ERR("Unhandled blend mode %ld !\n",dwRenderState);
 198                 }
 199                 glBlendFunc(rs->src, rs->dst);
 200                 break;
 201
 202             case D3DRENDERSTATE_DESTBLEND:          /* 20 */
 203                 switch ((D3DBLEND) dwRenderState) {
 204                     case D3DBLEND_ONE:
 205                         rs->dst = GL_ONE;
 206                         break;
 207                     case D3DBLEND_INVSRCALPHA:
 208                         rs->dst = GL_ONE_MINUS_SRC_ALPHA;
 209                         break;
 210                     default:
 211                         ERR("Unhandled blend mode %ld !\n",dwRenderState);
 212                 }
 213                 glBlendFunc(rs->src, rs->dst);
 214                 break;
 215
 216             case D3DRENDERSTATE_TEXTUREMAPBLEND:    /* 21 */
 217                 switch ((D3DTEXTUREBLEND) dwRenderState) {
 218                     case D3DTBLEND_MODULATE:
 219                     case D3DTBLEND_MODULATEALPHA:
 220                           glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
 221                           break;
 222                     default:
 223                           ERR("Unhandled texture environment %ld !\n",dwRenderState);
 224                 }
 225                 break;
 226
 227             case D3DRENDERSTATE_CULLMODE:           /* 22 */
 228                 switch ((D3DCULL) dwRenderState) {
 229                     case D3DCULL_NONE:
 230                          glDisable(GL_CULL_FACE);
 231                          break;
 232                     case D3DCULL_CW:
 233                          glEnable(GL_CULL_FACE);
 234                          glFrontFace(GL_CW);
 235                          break;
 236                     case D3DCULL_CCW:
 237                          glEnable(GL_CULL_FACE);
 238                          glFrontFace(GL_CCW);
 239                          break;
 240                     default:
 241                          ERR("Unhandled cull mode %ld !\n",dwRenderState);
 242                 }
 243                 break;
 244
 245             case D3DRENDERSTATE_ZFUNC:            /* 23 */
 246                 glDepthFunc(convert_D3D_compare_to_GL(dwRenderState));
 247                 break;
 248
 249             case D3DRENDERSTATE_ALPHAREF:   /* 24 */
 250                 rs->alpha_ref = dwRenderState / 255.0;
 251                 glAlphaFunc(rs->alpha_func, rs->alpha_ref);
 252                 break;
 253
 254             case D3DRENDERSTATE_ALPHAFUNC: /* 25 */
 255                 rs->alpha_func = convert_D3D_compare_to_GL(dwRenderState);
 256                 glAlphaFunc(rs->alpha_func, rs->alpha_ref);
 257                 break;
 258
 259             case D3DRENDERSTATE_DITHERENABLE:     /* 26 */
 260                 if (dwRenderState)
 261                     glEnable(GL_DITHER);
 262                 else
 263                     glDisable(GL_DITHER);
 264                 break;
 265
 266             case D3DRENDERSTATE_ALPHABLENDENABLE:   /* 27 */
 267                 if (dwRenderState)
 268                     glEnable(GL_BLEND);
 269                 else
 270                     glDisable(GL_BLEND);
 271                 break;
 272
 273             case D3DRENDERSTATE_FOGENABLE: /* 28 */
 274                 if (dwRenderState)
 275                     glEnable(GL_FOG);
 276                 else
 277                     glDisable(GL_FOG);
 278                 break;
 279
 280             case D3DRENDERSTATE_SPECULARENABLE: /* 29 */
 281                 if (dwRenderState)
 282                     ERR(" Specular Lighting not supported yet.\n");
 283                 break;
 284
 285             case D3DRENDERSTATE_SUBPIXEL:  /* 31 */
 286             case D3DRENDERSTATE_SUBPIXELX: /* 32 */
 287                 /* We do not support this anyway, so why protest :-) */
 288                 break;
 289
 290             case D3DRENDERSTATE_FOGCOLOR: { /* 34 */
 291                 GLint color[4];
 292                 color[0] = (dwRenderState >> 16) & 0xFF;
 293                 color[1] = (dwRenderState >>  8) & 0xFF;
 294                 color[2] = (dwRenderState >>  0) & 0xFF;
 295                 color[3] = (dwRenderState >> 24) & 0xFF;
 296                 glFogiv(GL_FOG_COLOR, color);
 297             } break;
 298
 299
 300             case D3DRENDERSTATE_COLORKEYENABLE:     /* 41 */
 301                 if (dwRenderState)
 302                     glEnable(GL_BLEND);
 303                 else
 304                     glDisable(GL_BLEND);
 305                 break;
 306
 307             case D3DRENDERSTATE_ZBIAS: /* 47 */
 308                 /* This is a tad bit hacky.. But well, no idea how to do it better in OpenGL :-/ */
 309                 if (dwRenderState == 0) {
 310                     glDisable(GL_POLYGON_OFFSET_FILL);
 311                     glDisable(GL_POLYGON_OFFSET_LINE);
 312                     glDisable(GL_POLYGON_OFFSET_POINT);
 313                 } else {
 314                     glEnable(GL_POLYGON_OFFSET_FILL);
 315                     glEnable(GL_POLYGON_OFFSET_LINE);
 316                     glEnable(GL_POLYGON_OFFSET_POINT);
 317                     glPolygonOffset(1.0, dwRenderState * 1.0);
 318                 }
 319                 break;
 320
 321             case D3DRENDERSTATE_FLUSHBATCH:         /* 50 */
 322                 break;
 323
 324             default:
 325                 ERR("Unhandled dwRenderStateType %s !\n", _get_renderstate(dwRenderStateType));
 326         }
 327         LEAVE_GL();
 328     }
 329 }