src/gallium/drivers/svga/svga_draw.c

   1 /**********************************************************
   2  * Copyright 2008-2009 VMware, Inc.  All rights reserved.
   3  *
   4  * Permission is hereby granted, free of charge, to any person
   5  * obtaining a copy of this software and associated documentation
   6  * files (the "Software"), to deal in the Software without
   7  * restriction, including without limitation the rights to use, copy,
   8  * modify, merge, publish, distribute, sublicense, and/or sell copies
   9  * of the Software, and to permit persons to whom the Software is
  10  * furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be
  13  * included in all copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  16  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  18  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  19  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  20  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  21  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  22  * SOFTWARE.
  23  *
  24  **********************************************************/
  25
  26 #include "pipe/p_compiler.h"
  27 #include "pipe/p_inlines.h"
  28 #include "pipe/p_defines.h"
  29 #include "util/u_memory.h"
  30 #include "util/u_math.h"
  31
  32 #include "svga_draw.h"
  33 #include "svga_draw_private.h"
  34 #include "svga_screen.h"
  35 #include "svga_screen_buffer.h"
  36 #include "svga_winsys.h"
  37 #include "svga_cmd.h"
  38
  39
  40 struct svga_hwtnl *svga_hwtnl_create( struct svga_context *svga,
  41                                       struct u_upload_mgr *upload_ib,
  42                                       struct svga_winsys_context *swc )
  43 {
  44    struct svga_hwtnl *hwtnl = CALLOC_STRUCT(svga_hwtnl);
  45    if (hwtnl == NULL)
  46       goto fail;
  47
  48    hwtnl->svga = svga;
  49    hwtnl->upload_ib = upload_ib;
  50
  51    hwtnl->cmd.swc = swc;
  52
  53    return hwtnl;
  54
  55 fail:
  56    return NULL;
  57 }
  58
  59 void svga_hwtnl_destroy( struct svga_hwtnl *hwtnl )
  60 {
  61    int i, j;
  62
  63    for (i = 0; i < PIPE_PRIM_MAX; i++) {
  64       for (j = 0; j < IDX_CACHE_MAX; j++) {
  65          pipe_buffer_reference( &hwtnl->index_cache[i][j].buffer,
  66                                 NULL );
  67       }
  68    }
  69
  70    for (i = 0; i < hwtnl->cmd.vdecl_count; i++)
  71       pipe_buffer_reference(&hwtnl->cmd.vdecl_vb[i], NULL);
  72
  73    for (i = 0; i < hwtnl->cmd.prim_count; i++)
  74       pipe_buffer_reference(&hwtnl->cmd.prim_ib[i], NULL);
  75
  76
  77    FREE(hwtnl);
  78 }
  79
  80
  81 void svga_hwtnl_set_flatshade( struct svga_hwtnl *hwtnl,
  82                                boolean flatshade,
  83                                boolean flatshade_first )
  84 {
  85    hwtnl->hw_pv = PV_FIRST;
  86    hwtnl->api_pv = (flatshade && !flatshade_first) ? PV_LAST : PV_FIRST;
  87 }
  88
  89 void svga_hwtnl_set_unfilled( struct svga_hwtnl *hwtnl,
  90                               unsigned mode )
  91 {
  92    hwtnl->api_fillmode = mode;
  93 }
  94
  95 void svga_hwtnl_reset_vdecl( struct svga_hwtnl *hwtnl,
  96                              unsigned count )
  97 {
  98    unsigned i;
  99
 100    assert(hwtnl->cmd.prim_count == 0);
 101
 102    for (i = count; i < hwtnl->cmd.vdecl_count; i++) {
 103       pipe_buffer_reference(&hwtnl->cmd.vdecl_vb[i],
 104                             NULL);
 105    }
 106
 107    hwtnl->cmd.vdecl_count = count;
 108 }
 109
 110
 111 void svga_hwtnl_vdecl( struct svga_hwtnl *hwtnl,
 112                           unsigned i,
 113                           const SVGA3dVertexDecl *decl,
 114                           struct pipe_buffer *vb)
 115 {
 116    assert(hwtnl->cmd.prim_count == 0);
 117
 118    assert( i < hwtnl->cmd.vdecl_count );
 119
 120    hwtnl->cmd.vdecl[i] = *decl;
 121
 122    pipe_buffer_reference(&hwtnl->cmd.vdecl_vb[i],
 123                          vb);
 124 }
 125
 126
 127
 128 enum pipe_error
 129 svga_hwtnl_flush( struct svga_hwtnl *hwtnl )
 130 {
 131    struct svga_winsys_context *swc = hwtnl->cmd.swc;
 132    struct svga_context *svga = hwtnl->svga;
 133    enum pipe_error ret;
 134
 135    if (hwtnl->cmd.prim_count) {
 136       struct svga_winsys_surface *vb_handle[SVGA3D_INPUTREG_MAX];
 137       struct svga_winsys_surface *ib_handle[QSZ];
 138       struct svga_winsys_surface *handle;
 139       SVGA3dVertexDecl *vdecl;
 140       SVGA3dPrimitiveRange *prim;
 141       unsigned i;
 142
 143       for (i = 0; i < hwtnl->cmd.vdecl_count; i++) {
 144          handle = svga_buffer_handle(svga, hwtnl->cmd.vdecl_vb[i]);
 145          if (handle == NULL)
 146             return PIPE_ERROR_OUT_OF_MEMORY;
 147
 148          vb_handle[i] = handle;
 149       }
 150
 151       for (i = 0; i < hwtnl->cmd.prim_count; i++) {
 152          if (hwtnl->cmd.prim_ib[i]) {
 153             handle = svga_buffer_handle(svga, hwtnl->cmd.prim_ib[i]);
 154             if (handle == NULL)
 155                return PIPE_ERROR_OUT_OF_MEMORY;
 156          }
 157          else
 158             handle = NULL;
 159
 160          ib_handle[i] = handle;
 161       }
 162
 163       ret = SVGA3D_BeginDrawPrimitives(swc,
 164                                        &vdecl,
 165                                        hwtnl->cmd.vdecl_count,
 166                                        &prim,
 167                                        hwtnl->cmd.prim_count);
 168       if (ret != PIPE_OK)
 169          return ret;
 170
 171
 172       memcpy( vdecl,
 173               hwtnl->cmd.vdecl,
 174               hwtnl->cmd.vdecl_count * sizeof hwtnl->cmd.vdecl[0]);
 175
 176       for (i = 0; i < hwtnl->cmd.vdecl_count; i++) {
 177          /* Given rangeHint is considered to be relative to indexBias, and
 178           * indexBias varies per primitive, we cannot accurately supply an
 179           * rangeHint when emitting more than one primitive per draw command.
 180           */
 181          if (hwtnl->cmd.prim_count == 1) {
 182             vdecl[i].rangeHint.first = hwtnl->cmd.min_index[0];
 183             vdecl[i].rangeHint.last = hwtnl->cmd.max_index[0] + 1;
 184          }
 185          else {
 186             vdecl[i].rangeHint.first = 0;
 187             vdecl[i].rangeHint.last = 0;
 188          }
 189
 190          swc->surface_relocation(swc,
 191                                  &vdecl[i].array.surfaceId,
 192                                  vb_handle[i],
 193                                  PIPE_BUFFER_USAGE_GPU_READ);
 194       }
 195
 196       memcpy( prim,
 197               hwtnl->cmd.prim,
 198               hwtnl->cmd.prim_count * sizeof hwtnl->cmd.prim[0]);
 199
 200       for (i = 0; i < hwtnl->cmd.prim_count; i++) {
 201          swc->surface_relocation(swc,
 202                                  &prim[i].indexArray.surfaceId,
 203                                  ib_handle[i],
 204                                  PIPE_BUFFER_USAGE_GPU_READ);
 205          pipe_buffer_reference(&hwtnl->cmd.prim_ib[i], NULL);
 206       }
 207
 208       SVGA_FIFOCommitAll( swc );
 209       hwtnl->cmd.prim_count = 0;
 210    }
 211
 212    return PIPE_OK;
 213 }
 214
 215
 216
 217
 218
 219 /***********************************************************************
 220  * Internal functions:
 221  */
 222
 223 enum pipe_error svga_hwtnl_prim( struct svga_hwtnl *hwtnl,
 224                                  const SVGA3dPrimitiveRange *range,
 225                                  unsigned min_index,
 226                                  unsigned max_index,
 227                                  struct pipe_buffer *ib )
 228 {
 229    int ret = PIPE_OK;
 230
 231 #ifdef DEBUG
 232    {
 233       unsigned i;
 234       for (i = 0; i < hwtnl->cmd.vdecl_count; i++) {
 235          struct pipe_buffer *vb = hwtnl->cmd.vdecl_vb[i];
 236          unsigned size = vb ? vb->size : 0;
 237          unsigned offset = hwtnl->cmd.vdecl[i].array.offset;
 238          unsigned stride = hwtnl->cmd.vdecl[i].array.stride;
 239          unsigned index_bias = range->indexBias;
 240          unsigned width;
 241
 242          assert(vb);
 243          assert(size);
 244          assert(offset < size);
 245          assert(index_bias >= 0);
 246          assert(min_index <= max_index);
 247          assert(offset + index_bias*stride < size);
 248          assert(offset + (index_bias + min_index)*stride < size);
 249
 250          switch (hwtnl->cmd.vdecl[i].identity.type) {
 251          case SVGA3D_DECLTYPE_FLOAT1:
 252             width = 4;
 253             break;
 254          case SVGA3D_DECLTYPE_FLOAT2:
 255             width = 4*2;
 256             break;
 257          case SVGA3D_DECLTYPE_FLOAT3:
 258             width = 4*3;
 259             break;
 260          case SVGA3D_DECLTYPE_FLOAT4:
 261             width = 4*4;
 262             break;
 263          case SVGA3D_DECLTYPE_D3DCOLOR:
 264             width = 4;
 265             break;
 266          case SVGA3D_DECLTYPE_UBYTE4:
 267             width = 1*4;
 268             break;
 269          case SVGA3D_DECLTYPE_SHORT2:
 270             width = 2*2;
 271             break;
 272          case SVGA3D_DECLTYPE_SHORT4:
 273             width = 2*4;
 274             break;
 275          case SVGA3D_DECLTYPE_UBYTE4N:
 276             width = 1*4;
 277             break;
 278          case SVGA3D_DECLTYPE_SHORT2N:
 279             width = 2*2;
 280             break;
 281          case SVGA3D_DECLTYPE_SHORT4N:
 282             width = 2*4;
 283             break;
 284          case SVGA3D_DECLTYPE_USHORT2N:
 285             width = 2*2;
 286             break;
 287          case SVGA3D_DECLTYPE_USHORT4N:
 288             width = 2*4;
 289             break;
 290          case SVGA3D_DECLTYPE_UDEC3:
 291             width = 4;
 292             break;
 293          case SVGA3D_DECLTYPE_DEC3N:
 294             width = 4;
 295             break;
 296          case SVGA3D_DECLTYPE_FLOAT16_2:
 297             width = 2*2;
 298             break;
 299          case SVGA3D_DECLTYPE_FLOAT16_4:
 300             width = 2*4;
 301             break;
 302          default:
 303             assert(0);
 304             width = 0;
 305             break;
 306          }
 307
 308          assert(!stride || width <= stride);
 309          assert(offset + (index_bias + max_index)*stride + width <= size);
 310       }
 311
 312       assert(range->indexWidth == range->indexArray.stride);
 313
 314       if(ib) {
 315          unsigned size = ib->size;
 316          unsigned offset = range->indexArray.offset;
 317          unsigned stride = range->indexArray.stride;
 318          unsigned count;
 319
 320          assert(size);
 321          assert(offset < size);
 322          assert(stride);
 323
 324          switch (range->primType) {
 325          case SVGA3D_PRIMITIVE_POINTLIST:
 326             count = range->primitiveCount;
 327             break;
 328          case SVGA3D_PRIMITIVE_LINELIST:
 329             count = range->primitiveCount * 2;
 330             break;
 331          case SVGA3D_PRIMITIVE_LINESTRIP:
 332             count = range->primitiveCount + 1;
 333             break;
 334          case SVGA3D_PRIMITIVE_TRIANGLELIST:
 335             count = range->primitiveCount * 3;
 336             break;
 337          case SVGA3D_PRIMITIVE_TRIANGLESTRIP:
 338             count = range->primitiveCount + 2;
 339             break;
 340          case SVGA3D_PRIMITIVE_TRIANGLEFAN:
 341             count = range->primitiveCount + 2;
 342             break;
 343          default:
 344             assert(0);
 345             count = 0;
 346             break;
 347          }
 348
 349          assert(offset + count*stride <= size);
 350       }
 351    }
 352 #endif
 353
 354    if (hwtnl->cmd.prim_count+1 >= QSZ) {
 355       ret = svga_hwtnl_flush( hwtnl );
 356       if (ret != PIPE_OK)
 357          return ret;
 358    }
 359
 360    /* min/max indices are relative to bias */
 361    hwtnl->cmd.min_index[hwtnl->cmd.prim_count] = min_index;
 362    hwtnl->cmd.max_index[hwtnl->cmd.prim_count] = max_index;
 363
 364    hwtnl->cmd.prim[hwtnl->cmd.prim_count] = *range;
 365
 366    pipe_buffer_reference(&hwtnl->cmd.prim_ib[hwtnl->cmd.prim_count], ib);
 367    hwtnl->cmd.prim_count++;
 368
 369    return ret;
 370 }