src/mesa/drivers/dri/tdfx/tdfx_vb.c

   1 /*
   2  * GLX Hardware Device Driver for Intel i810
   3  * Copyright (C) 1999 Keith Whitwell
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be included
  13  * in all copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  16  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * KEITH WHITWELL, OR ANY OTHER CONTRIBUTORS BE LIABLE FOR ANY CLAIM,
  19  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  20  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
  21  * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  22  *
  23  *
  24  */
  25
  26 #include "main/glheader.h"
  27 #include "main/mtypes.h"
  28 #include "main/imports.h"
  29 #include "main/macros.h"
  30 #include "main/colormac.h"
  31
  32 #include "tdfx_context.h"
  33 #include "tdfx_vb.h"
  34 #include "tdfx_render.h"
  35
  36 static void copy_pv( GLcontext *ctx, GLuint edst, GLuint esrc )
  37 {
  38    tdfxContextPtr fxMesa = TDFX_CONTEXT( ctx );
  39    tdfxVertex *dst = fxMesa->verts + edst;
  40    tdfxVertex *src = fxMesa->verts + esrc;
  41    *(GLuint *)&dst->color = *(GLuint *)&src->color;
  42 }
  43
  44 static struct {
  45    void                (*emit)( GLcontext *, GLuint, GLuint, void * );
  46    tnl_interp_func              interp;
  47    tnl_copy_pv_func             copy_pv;
  48    GLboolean           (*check_tex_sizes)( GLcontext *ctx );
  49    GLuint               vertex_format;
  50 } setup_tab[TDFX_MAX_SETUP];
  51
  52
  53
  54
  55 #define GET_COLOR(ptr, idx) ((ptr)->data[idx])
  56
  57
  58 static void interp_extras( GLcontext *ctx,
  59                            GLfloat t,
  60                            GLuint dst, GLuint out, GLuint in,
  61                            GLboolean force_boundary )
  62 {
  63    struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb;
  64
  65    /*fprintf(stderr, "%s\n", __FUNCTION__);*/
  66
  67    if (VB->BackfaceColorPtr) {
  68       INTERP_4F( t,
  69                  GET_COLOR(VB->BackfaceColorPtr, dst),
  70                  GET_COLOR(VB->BackfaceColorPtr, out),
  71                  GET_COLOR(VB->BackfaceColorPtr, in) );
  72    }
  73
  74    if (VB->EdgeFlag) {
  75       VB->EdgeFlag[dst] = VB->EdgeFlag[out] || force_boundary;
  76    }
  77
  78    setup_tab[TDFX_CONTEXT(ctx)->SetupIndex].interp(ctx, t, dst, out, in,
  79                                                    force_boundary);
  80 }
  81
  82 static void copy_pv_extras( GLcontext *ctx, GLuint dst, GLuint src )
  83 {
  84    struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb;
  85
  86    if (VB->BackfaceColorPtr) {
  87       COPY_4FV( GET_COLOR(VB->BackfaceColorPtr, dst),
  88                 GET_COLOR(VB->BackfaceColorPtr, src) );
  89    }
  90
  91    setup_tab[TDFX_CONTEXT(ctx)->SetupIndex].copy_pv(ctx, dst, src);
  92 }
  93
  94
  95
  96 #define IND (TDFX_XYZ_BIT|TDFX_RGBA_BIT)
  97 #define TAG(x) x##_wg
  98 #include "tdfx_vbtmp.h"
  99
 100 /* Special for tdfx: fog requires w
 101  */
 102 #define IND (TDFX_XYZ_BIT|TDFX_RGBA_BIT|TDFX_W_BIT)
 103 #define TAG(x) x##_wg_fog
 104 #include "tdfx_vbtmp.h"
 105
 106 #define IND (TDFX_XYZ_BIT|TDFX_RGBA_BIT|TDFX_W_BIT|TDFX_TEX0_BIT)
 107 #define TAG(x) x##_wgt0
 108 #include "tdfx_vbtmp.h"
 109
 110 #define IND (TDFX_XYZ_BIT|TDFX_RGBA_BIT|TDFX_W_BIT|TDFX_TEX0_BIT|TDFX_TEX1_BIT)
 111 #define TAG(x) x##_wgt0t1
 112 #include "tdfx_vbtmp.h"
 113
 114 #define IND (TDFX_XYZ_BIT|TDFX_RGBA_BIT|TDFX_W_BIT|TDFX_TEX0_BIT|TDFX_PTEX_BIT)
 115 #define TAG(x) x##_wgpt0
 116 #include "tdfx_vbtmp.h"
 117
 118 #define IND (TDFX_XYZ_BIT|TDFX_RGBA_BIT|TDFX_W_BIT|TDFX_TEX0_BIT|TDFX_TEX1_BIT|\
 119              TDFX_PTEX_BIT)
 120 #define TAG(x) x##_wgpt0t1
 121 #include "tdfx_vbtmp.h"
 122
 123 #define IND (TDFX_RGBA_BIT)
 124 #define TAG(x) x##_g
 125 #include "tdfx_vbtmp.h"
 126
 127 #define IND (TDFX_TEX0_BIT)
 128 #define TAG(x) x##_t0
 129 #include "tdfx_vbtmp.h"
 130
 131 #define IND (TDFX_TEX0_BIT|TDFX_TEX1_BIT)
 132 #define TAG(x) x##_t0t1
 133 #include "tdfx_vbtmp.h"
 134
 135 #define IND (TDFX_RGBA_BIT|TDFX_TEX0_BIT)
 136 #define TAG(x) x##_gt0
 137 #include "tdfx_vbtmp.h"
 138
 139 #define IND (TDFX_RGBA_BIT|TDFX_TEX0_BIT|TDFX_TEX1_BIT)
 140 #define TAG(x) x##_gt0t1
 141 #include "tdfx_vbtmp.h"
 142
 143
 144 /* fogc { */
 145 #define IND (TDFX_XYZ_BIT|TDFX_RGBA_BIT|TDFX_W_BIT|TDFX_FOGC_BIT)
 146 #define TAG(x) x##_wgf
 147 #include "tdfx_vbtmp.h"
 148
 149 #define IND (TDFX_XYZ_BIT|TDFX_RGBA_BIT|TDFX_W_BIT|TDFX_TEX0_BIT|TDFX_FOGC_BIT)
 150 #define TAG(x) x##_wgt0f
 151 #include "tdfx_vbtmp.h"
 152
 153 #define IND (TDFX_XYZ_BIT|TDFX_RGBA_BIT|TDFX_W_BIT|TDFX_TEX0_BIT|TDFX_TEX1_BIT|TDFX_FOGC_BIT)
 154 #define TAG(x) x##_wgt0t1f
 155 #include "tdfx_vbtmp.h"
 156
 157 #define IND (TDFX_XYZ_BIT|TDFX_RGBA_BIT|TDFX_W_BIT|TDFX_TEX0_BIT|TDFX_PTEX_BIT|TDFX_FOGC_BIT)
 158 #define TAG(x) x##_wgpt0f
 159 #include "tdfx_vbtmp.h"
 160
 161 #define IND (TDFX_XYZ_BIT|TDFX_RGBA_BIT|TDFX_W_BIT|TDFX_TEX0_BIT|TDFX_TEX1_BIT|\
 162              TDFX_PTEX_BIT|TDFX_FOGC_BIT)
 163 #define TAG(x) x##_wgpt0t1f
 164 #include "tdfx_vbtmp.h"
 165 /* fogc } */
 166
 167
 168 static void init_setup_tab( void )
 169 {
 170    init_wg();
 171    init_wg_fog();
 172    init_wgt0();
 173    init_wgt0t1();
 174    init_wgpt0();
 175    init_wgpt0t1();
 176
 177    init_g();
 178    init_t0();
 179    init_t0t1();
 180    init_gt0();
 181    init_gt0t1();
 182
 183    /* fogcoord */
 184    init_wgf();
 185    init_wgt0f();
 186    init_wgt0t1f();
 187    init_wgpt0f();
 188    init_wgpt0t1f();
 189 }
 190
 191
 192 void tdfxPrintSetupFlags(char *msg, GLuint flags )
 193 {
 194    fprintf(stderr, "%s(%x): %s%s%s%s%s%s\n",
 195            msg,
 196            (int)flags,
 197            (flags & TDFX_XYZ_BIT)     ? " xyz," : "",
 198            (flags & TDFX_W_BIT)     ? " w," : "",
 199            (flags & TDFX_RGBA_BIT)     ? " rgba," : "",
 200            (flags & TDFX_TEX0_BIT)     ? " tex-0," : "",
 201            (flags & TDFX_TEX1_BIT)     ? " tex-1," : "",
 202            (flags & TDFX_FOGC_BIT)     ? " fogc," : "");
 203 }
 204
 205
 206
 207 void tdfxCheckTexSizes( GLcontext *ctx )
 208 {
 209    TNLcontext *tnl = TNL_CONTEXT(ctx);
 210    tdfxContextPtr fxMesa = TDFX_CONTEXT( ctx );
 211
 212    if (!setup_tab[fxMesa->SetupIndex].check_tex_sizes(ctx)) {
 213       GLuint ind = fxMesa->SetupIndex |= (TDFX_PTEX_BIT|TDFX_RGBA_BIT);
 214
 215       /* Tdfx handles projective textures nicely; just have to change
 216        * up to the new vertex format.
 217        */
 218       if (setup_tab[ind].vertex_format != fxMesa->vertexFormat) {
 219          FLUSH_BATCH(fxMesa);
 220          fxMesa->dirty |= TDFX_UPLOAD_VERTEX_LAYOUT;
 221          fxMesa->vertexFormat = setup_tab[ind].vertex_format;
 222
 223          /* This is required as we have just changed the vertex
 224           * format, so the interp and copy routines must also change.
 225           * In the unfilled and twosided cases we are using the
 226           * swrast_setup ones anyway, so leave them in place.
 227           */
 228          if (!(ctx->_TriangleCaps & (DD_TRI_LIGHT_TWOSIDE|DD_TRI_UNFILLED))) {
 229             tnl->Driver.Render.Interp = setup_tab[fxMesa->SetupIndex].interp;
 230             tnl->Driver.Render.CopyPV = setup_tab[fxMesa->SetupIndex].copy_pv;
 231          }
 232       }
 233    }
 234 }
 235
 236
 237 void tdfxBuildVertices( GLcontext *ctx, GLuint start, GLuint end,
 238                         GLuint newinputs )
 239 {
 240    tdfxContextPtr fxMesa = TDFX_CONTEXT( ctx );
 241    tdfxVertex *v = fxMesa->verts + start;
 242
 243    newinputs |= fxMesa->SetupNewInputs;
 244    fxMesa->SetupNewInputs = 0;
 245
 246    if (!newinputs)
 247       return;
 248
 249    if (newinputs & VERT_BIT_POS) {
 250       setup_tab[fxMesa->SetupIndex].emit( ctx, start, end, v );
 251    } else {
 252       GLuint ind = 0;
 253
 254       if (newinputs & VERT_BIT_COLOR0)
 255          ind |= TDFX_RGBA_BIT;
 256
 257       if (newinputs & VERT_BIT_FOG)
 258          ind |= TDFX_FOGC_BIT;
 259
 260       if (newinputs & VERT_BIT_TEX0)
 261          ind |= TDFX_TEX0_BIT;
 262
 263       if (newinputs & VERT_BIT_TEX1)
 264          ind |= TDFX_TEX0_BIT|TDFX_TEX1_BIT;
 265
 266       if (fxMesa->SetupIndex & TDFX_PTEX_BIT)
 267          ind = ~0;
 268
 269       ind &= fxMesa->SetupIndex;
 270
 271       if (ind) {
 272          setup_tab[ind].emit( ctx, start, end, v );
 273       }
 274    }
 275 }
 276
 277
 278 void tdfxChooseVertexState( GLcontext *ctx )
 279 {
 280    TNLcontext *tnl = TNL_CONTEXT(ctx);
 281    tdfxContextPtr fxMesa = TDFX_CONTEXT( ctx );
 282    GLuint ind = TDFX_XYZ_BIT|TDFX_RGBA_BIT;
 283
 284    fxMesa->tmu_source[0] = 0;
 285    fxMesa->tmu_source[1] = 1;
 286
 287    if (ctx->Texture._EnabledUnits & 0x2) {
 288       if (ctx->Texture._EnabledUnits & 0x1) {
 289          ind |= TDFX_TEX1_BIT;
 290       }
 291       ind |= TDFX_W_BIT|TDFX_TEX0_BIT;
 292       fxMesa->tmu_source[0] = 1;
 293       fxMesa->tmu_source[1] = 0;
 294    } else if (ctx->Texture._EnabledUnits & 0x1) {
 295       /* unit 0 enabled */
 296       ind |= TDFX_W_BIT|TDFX_TEX0_BIT;
 297    } else if (fxMesa->Fog.Mode != GR_FOG_DISABLE) {
 298       ind |= TDFX_W_BIT;
 299    }
 300
 301    if (fxMesa->Fog.Mode == GR_FOG_WITH_TABLE_ON_FOGCOORD_EXT) {
 302       ind |= TDFX_FOGC_BIT;
 303    }
 304
 305    fxMesa->SetupIndex = ind;
 306
 307    if (ctx->_TriangleCaps & (DD_TRI_LIGHT_TWOSIDE|DD_TRI_UNFILLED)) {
 308       tnl->Driver.Render.Interp = interp_extras;
 309       tnl->Driver.Render.CopyPV = copy_pv_extras;
 310    } else {
 311       tnl->Driver.Render.Interp = setup_tab[ind].interp;
 312       tnl->Driver.Render.CopyPV = setup_tab[ind].copy_pv;
 313    }
 314
 315    if (setup_tab[ind].vertex_format != fxMesa->vertexFormat) {
 316       FLUSH_BATCH(fxMesa);
 317       fxMesa->dirty |= TDFX_UPLOAD_VERTEX_LAYOUT;
 318       fxMesa->vertexFormat = setup_tab[ind].vertex_format;
 319    }
 320 }
 321
 322
 323
 324 void tdfxInitVB( GLcontext *ctx )
 325 {
 326    tdfxContextPtr fxMesa = TDFX_CONTEXT(ctx);
 327    GLuint size = TNL_CONTEXT(ctx)->vb.Size;
 328    static int firsttime = 1;
 329    if (firsttime) {
 330       init_setup_tab();
 331       firsttime = 0;
 332    }
 333
 334    fxMesa->verts = _mesa_align_malloc(size * sizeof(tdfxVertex), 32);
 335    fxMesa->vertexFormat = TDFX_LAYOUT_TINY;
 336    fxMesa->SetupIndex = TDFX_XYZ_BIT|TDFX_RGBA_BIT;
 337 }
 338
 339
 340 void tdfxFreeVB( GLcontext *ctx )
 341 {
 342    tdfxContextPtr fxMesa = TDFX_CONTEXT(ctx);
 343    if (fxMesa->verts) {
 344       _mesa_align_free(fxMesa->verts);
 345       fxMesa->verts = 0;
 346    }
 347 }