src/mesa/tnl/t_array_api.c

   1 /* $Id: t_array_api.c,v 1.1 2000/12/26 05:09:32 keithw Exp $ */
   2
   3 /*
   4  * Mesa 3-D graphics library
   5  * Version:  3.5
   6  *
   7  * Copyright (C) 1999-2000  Brian Paul   All Rights Reserved.
   8  *
   9  * Permission is hereby granted, free of charge, to any person obtaining a
  10  * copy of this software and associated documentation files (the "Software"),
  11  * to deal in the Software without restriction, including without limitation
  12  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  13  * and/or sell copies of the Software, and to permit persons to whom the
  14  * Software is furnished to do so, subject to the following conditions:
  15  *
  16  * The above copyright notice and this permission notice shall be included
  17  * in all copies or substantial portions of the Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  20  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  21  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  22  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  23  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  24  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  * Authors:
  27  *    Keith Whitwell <keithw@valinux.com>
  28  */
  29
  30 #include "glheader.h"
  31 #include "api_validate.h"
  32 #include "context.h"
  33 #include "macros.h"
  34 #include "mmath.h"
  35 #include "mem.h"
  36 #include "state.h"
  37 #include "mtypes.h"
  38
  39 #include "array_cache/acache.h"
  40
  41 #include "t_array_api.h"
  42 #include "t_array_import.h"
  43 #include "t_imm_api.h"
  44 #include "t_imm_exec.h"
  45 #include "t_context.h"
  46 #include "t_pipeline.h"
  47
  48
  49
  50
  51
  52 void
  53 _tnl_DrawArrays(GLenum mode, GLint start, GLsizei count)
  54 {
  55    GET_CURRENT_CONTEXT(ctx);
  56    TNLcontext *tnl = TNL_CONTEXT(ctx);
  57    struct vertex_buffer *VB = &tnl->vb;
  58
  59    /* Check arguments, etc.
  60     */
  61    if (!_mesa_validate_DrawArrays( ctx, mode, start, count ))
  62       return;
  63
  64    if (tnl->pipeline.build_state_changes)
  65       _tnl_validate_pipeline( ctx );
  66
  67    if (!ctx->CompileFlag && count - start < ctx->Const.MaxArrayLockSize) {
  68       FLUSH_CURRENT( ctx, 0 );
  69
  70       if (ctx->Array.LockCount)
  71       {
  72          if (start < ctx->Array.LockFirst) start = ctx->Array.LockFirst;
  73          if (count > ctx->Array.LockCount) count = ctx->Array.LockCount;
  74          if (start >= count) return;
  75
  76          /* Locked drawarrays.  Reuse any previously transformed data.
  77           */
  78          _tnl_vb_bind_arrays( ctx, ctx->Array.LockFirst, ctx->Array.LockCount );
  79          VB->FirstPrimitive = start;
  80          VB->Primitive[start] = mode | PRIM_BEGIN | PRIM_END | PRIM_LAST;
  81          VB->PrimitiveLength[start] = count - start;
  82          _tnl_run_pipeline( ctx );
  83       } else {
  84          /* The arrays are small enough to fit in a single VB; just bind
  85           * them and go.  Any untransformed data will be copied on
  86           * clipping.
  87           *
  88           * Invalidate any locked data dependent on these arrays.
  89           */
  90          _tnl_vb_bind_arrays( ctx, start, count );
  91          VB->FirstPrimitive = 0;
  92          VB->Primitive[0] = mode | PRIM_BEGIN | PRIM_END | PRIM_LAST;
  93          VB->PrimitiveLength[0] = count - start;
  94          tnl->pipeline.run_input_changes |= ctx->Array._Enabled;
  95          _tnl_run_pipeline( ctx );
  96          tnl->pipeline.run_input_changes |= ctx->Array._Enabled;
  97       }
  98    }
  99    else {
 100       /* Need to produce immediate structs, either for compiling or
 101        * because the array range is too large to process in a single
 102        * VB.  In GL_EXECUTE mode, this introduces two redundant
 103        * operations: producing the flag array and computing the orflag
 104        * of the flag array.
 105        */
 106 #if 0
 107       if (_tnl_hard_begin( ctx, mode )) {
 108          GLuint j;
 109          for (j = 0 ; j < count ; ) {
 110             struct immediate *IM = TNL_CURRENT_IM(ctx);
 111             GLuint nr = MIN2( IMM_MAXDATA - IM->Start, count - j );
 112             GLuint sf = IM->Flag[IM->Start];
 113
 114             _tnl_fill_immediate_drawarrays( ctx, IM, j, j+nr );
 115
 116             if (j == 0) IM->Flag[IM->Start] |= sf;
 117
 118             IM->Count = IM->Start + nr;
 119             j += nr;
 120
 121             if (j == count)
 122                _tnl_end( ctx );
 123
 124             _tnl_flush_immediate( IM );
 125          }
 126       }
 127 #else
 128       /* Simple alternative to above code.
 129        */
 130 /*        if (_tnl_hard_begin( ctx, mode ))  */
 131       _tnl_begin(ctx,mode);
 132       {
 133          GLuint i;
 134          for (i=start;i<count;i++) {
 135             _tnl_array_element( ctx, i );
 136          }
 137          _tnl_end( ctx );
 138       }
 139 #endif
 140    }
 141 }
 142
 143
 144
 145 static void _tnl_draw_range_elements( GLcontext *ctx, GLenum mode,
 146                                       GLuint start, GLuint end,
 147                                       GLsizei count, const GLuint *indices )
 148
 149 {
 150    TNLcontext *tnl = TNL_CONTEXT(ctx);
 151    FLUSH_CURRENT( ctx, 0 );
 152
 153    _tnl_vb_bind_arrays( ctx, start, end );
 154
 155    tnl->vb.FirstPrimitive = 0;
 156    tnl->vb.Primitive[0] = mode | PRIM_BEGIN | PRIM_END | PRIM_LAST;
 157    tnl->vb.PrimitiveLength[0] = count;
 158    tnl->vb.Elts = (GLuint *)indices;
 159
 160    if (ctx->Array.LockCount)
 161       _tnl_run_pipeline( ctx );
 162    else {
 163       /* Note that arrays may have changed before/after execution.
 164        */
 165       tnl->pipeline.run_input_changes |= ctx->Array._Enabled;
 166       _tnl_run_pipeline( ctx );
 167       tnl->pipeline.run_input_changes |= ctx->Array._Enabled;
 168    }
 169 }
 170
 171
 172
 173
 174 static void _tnl_draw_elements( GLcontext *ctx, GLenum mode, GLsizei count,
 175                                 const GLuint *indices)
 176 {
 177 #if 1
 178    /* Optimized code that fakes the effect of calling
 179     * _tnl_array_element for each index in the list.
 180     */
 181    if (_tnl_hard_begin( ctx, mode )) {
 182       GLuint i,j;
 183       for (j = 0 ; j < count ; ) {
 184          struct immediate *IM = TNL_CURRENT_IM(ctx);
 185          GLuint start = IM->Start;
 186          GLuint nr = MIN2( IMM_MAXDATA - start, count - j ) + start;
 187          GLuint sf = IM->Flag[start];
 188          IM->FlushElt |= 1;
 189
 190          for (i = start ; i < nr ; i++) {
 191             IM->Elt[i] = (GLuint) *indices++;
 192             IM->Flag[i] = VERT_ELT;
 193          }
 194
 195          if (j == 0) IM->Flag[start] |= sf;
 196
 197          IM->Count = nr;
 198          j += nr - start;
 199
 200          if (j == count)
 201             _tnl_end( ctx );
 202
 203          _tnl_flush_immediate( IM );
 204       }
 205    }
 206 #else
 207    /* Simple version of the above code.
 208     */
 209    if (_tnl_hard_begin(ctx, mode)) {
 210       GLuint i;
 211       for (i = 0 ; i < count ; i++)
 212          _tnl_array_element( ctx, indices[i] );
 213       _tnl_end( ctx );
 214    }
 215 #endif
 216 }
 217
 218
 219 void
 220 _tnl_DrawRangeElements(GLenum mode,
 221                        GLuint start, GLuint end,
 222                        GLsizei count, GLenum type, const GLvoid *indices)
 223 {
 224    GET_CURRENT_CONTEXT(ctx);
 225    TNLcontext *tnl = TNL_CONTEXT(ctx);
 226    GLuint *ui_indices;
 227
 228    /* Check arguments, etc.
 229     */
 230    if (!_mesa_validate_DrawRangeElements( ctx, mode, start, end, count,
 231                                           type, indices ))
 232       return;
 233
 234    if (tnl->pipeline.build_state_changes)
 235       _tnl_validate_pipeline( ctx );
 236
 237    ui_indices = (GLuint *)_ac_import_elements( ctx, GL_UNSIGNED_INT,
 238                                                count, type, indices );
 239
 240
 241    if (ctx->Array.LockCount) {
 242       /* Are the arrays already locked?  If so we currently have to look
 243        * at the whole locked range.
 244        */
 245       if (start >= ctx->Array.LockFirst && end <= ctx->Array.LockCount)
 246          _tnl_draw_range_elements( ctx, mode,
 247                                    ctx->Array.LockFirst,
 248                                    ctx->Array.LockCount,
 249                                    count, ui_indices );
 250       else {
 251          /* The spec says referencing elements outside the locked
 252           * range is undefined.  I'm going to make it a noop this time
 253           * round, maybe come up with something beter before 3.6.
 254           *
 255           * May be able to get away with just setting LockCount==0,
 256           * though this raises the problems of dependent state.  May
 257           * have to call glUnlockArrays() directly?
 258           */
 259          gl_problem( ctx,
 260                      "DrawRangeElements references "
 261                      "elements outside locked range.");
 262       }
 263    }
 264    else if (end - start < ctx->Const.MaxArrayLockSize) {
 265       /* The arrays aren't locked but we can still fit them inside a single
 266        * vertexbuffer.
 267        */
 268       _tnl_draw_range_elements( ctx, mode, start, end, count, ui_indices );
 269    } else {
 270       /* Range is too big to optimize:
 271        */
 272       _tnl_draw_elements( ctx, mode, count, ui_indices );
 273    }
 274 }
 275
 276
 277
 278 void
 279 _tnl_DrawElements(GLenum mode, GLsizei count, GLenum type,
 280                   const GLvoid *indices)
 281 {
 282    GET_CURRENT_CONTEXT(ctx);
 283    TNLcontext *tnl = TNL_CONTEXT(ctx);
 284    GLuint *ui_indices;
 285
 286    /* Check arguments, etc.
 287     */
 288    if (!_mesa_validate_DrawElements( ctx, mode, count, type, indices ))
 289       return;
 290
 291    if (tnl->pipeline.build_state_changes)
 292       _tnl_validate_pipeline( ctx );
 293
 294    ui_indices = (GLuint *)_ac_import_elements( ctx, GL_UNSIGNED_INT,
 295                                                count, type, indices );
 296
 297    if (ctx->Array.LockCount) {
 298       _tnl_draw_range_elements( ctx, mode,
 299                                 ctx->Array.LockFirst,
 300                                 ctx->Array.LockCount,
 301                                 count, ui_indices );
 302    }
 303    else {
 304       /* Scan the index list and see if we can use the locked path anyway.
 305        */
 306       GLuint max_elt = 0;
 307       GLuint i;
 308
 309       for (i = 0 ; i < count ; i++)
 310          if (ui_indices[i] > max_elt) max_elt = ui_indices[i];
 311
 312       if (max_elt < ctx->Const.MaxArrayLockSize && /* can we use it? */
 313           max_elt < count)                         /* do we want to use it? */
 314          _tnl_draw_range_elements( ctx, mode, 0, max_elt, count, ui_indices );
 315       else
 316          _tnl_draw_elements( ctx, mode, count, ui_indices );
 317    }
 318 }
 319
 320
 321 void _tnl_array_init( GLcontext *ctx )
 322 {
 323    TNLcontext *tnl = TNL_CONTEXT(ctx);
 324    struct vertex_arrays *tmp = &tnl->array_inputs;
 325    GLvertexformat *vfmt = &(TNL_CONTEXT(ctx)->vtxfmt);
 326    GLuint i;
 327
 328    vfmt->DrawArrays = _tnl_DrawArrays;
 329    vfmt->DrawElements = _tnl_DrawElements;
 330    vfmt->DrawRangeElements = _tnl_DrawRangeElements;
 331
 332    /* Setup vector pointers that will be used to bind arrays to VB's.
 333     */
 334    gl_vector4f_init( &tmp->Obj, 0, 0 );
 335    gl_vector3f_init( &tmp->Normal, 0, 0 );
 336    gl_vector4ub_init( &tmp->Color, 0, 0 );
 337    gl_vector4ub_init( &tmp->SecondaryColor, 0, 0 );
 338    gl_vector1f_init( &tmp->FogCoord, 0, 0 );
 339    gl_vector1ui_init( &tmp->Index, 0, 0 );
 340    gl_vector1ub_init( &tmp->EdgeFlag, 0, 0 );
 341
 342    for (i = 0; i < ctx->Const.MaxTextureUnits; i++)
 343       gl_vector4f_init( &tmp->TexCoord[i], 0, 0);
 344
 345    tnl->tmp_primitive = (GLuint *)MALLOC(sizeof(GLuint)*tnl->vb.Size);
 346    tnl->tmp_primitive_length = (GLuint *)MALLOC(sizeof(GLuint)*tnl->vb.Size);
 347 }
 348
 349
 350 void _tnl_array_destroy( GLcontext *ctx )
 351 {
 352    TNLcontext *tnl = TNL_CONTEXT(ctx);
 353    if (tnl->tmp_primitive_length) FREE(tnl->tmp_primitive_length);
 354    if (tnl->tmp_primitive) FREE(tnl->tmp_primitive);
 355 }