src/mesa/drivers/dri/i965/brw_state_upload.c

   1 /*
   2  Copyright (C) Intel Corp.  2006.  All Rights Reserved.
   3  Intel funded Tungsten Graphics (http://www.tungstengraphics.com) to
   4  develop this 3D driver.
   5
   6  Permission is hereby granted, free of charge, to any person obtaining
   7  a copy of this software and associated documentation files (the
   8  "Software"), to deal in the Software without restriction, including
   9  without limitation the rights to use, copy, modify, merge, publish,
  10  distribute, sublicense, and/or sell copies of the Software, and to
  11  permit persons to whom the Software is furnished to do so, subject to
  12  the following conditions:
  13
  14  The above copyright notice and this permission notice (including the
  15  next paragraph) shall be included in all copies or substantial
  16  portions of the Software.
  17
  18  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  19  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  21  IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
  22  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  23  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  24  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25
  26  **********************************************************************/
  27  /*
  28   * Authors:
  29   *   Keith Whitwell <keith@tungstengraphics.com>
  30   */
  31
  32
  33
  34 #include "brw_context.h"
  35 #include "brw_state.h"
  36 #include "intel_batchbuffer.h"
  37
  38 /* This is used to initialize brw->state.atoms[].  We could use this
  39  * list directly except for a single atom, brw_constant_buffer, which
  40  * has a .dirty value which changes according to the parameters of the
  41  * current fragment and vertex programs, and so cannot be a static
  42  * value.
  43  */
  44 const struct brw_tracked_state *atoms[] =
  45 {
  46    &brw_check_fallback,
  47
  48    &brw_wm_input_sizes,
  49    &brw_vs_prog,
  50    &brw_gs_prog,
  51    &brw_clip_prog,
  52    &brw_sf_prog,
  53    &brw_wm_prog,
  54
  55    /* Once all the programs are done, we know how large urb entry
  56     * sizes need to be and can decide if we need to change the urb
  57     * layout.
  58     */
  59    &brw_curbe_offsets,
  60    &brw_recalculate_urb_fence,
  61
  62
  63    &brw_cc_vp,
  64    &brw_cc_unit,
  65
  66    &brw_wm_surfaces,            /* must do before samplers */
  67    &brw_wm_samplers,
  68
  69    &brw_wm_unit,
  70    &brw_sf_vp,
  71    &brw_sf_unit,
  72    &brw_vs_unit,                /* always required, enabled or not */
  73    &brw_clip_unit,
  74    &brw_gs_unit,
  75
  76    /* Command packets:
  77     */
  78    &brw_invarient_state,
  79    &brw_state_base_address,
  80
  81    &brw_binding_table_pointers,
  82    &brw_blend_constant_color,
  83
  84    &brw_depthbuffer,
  85
  86    &brw_polygon_stipple,
  87    &brw_polygon_stipple_offset,
  88
  89    &brw_line_stipple,
  90    &brw_aa_line_parameters,
  91    /* Ordering of the commands below is documented as fixed.
  92     */
  93 #if 0
  94    &brw_pipelined_state_pointers,
  95    &brw_urb_fence,
  96    &brw_constant_buffer_state,
  97 #else
  98    &brw_psp_urb_cbs,
  99 #endif
 100
 101    &brw_drawing_rect,
 102    &brw_indices,
 103    &brw_vertices,
 104
 105    NULL,                        /* brw_constant_buffer */
 106 };
 107
 108
 109 void brw_init_state( struct brw_context *brw )
 110 {
 111    GLuint i;
 112
 113    brw_init_cache(brw);
 114
 115    brw->state.atoms = _mesa_malloc(sizeof(atoms));
 116    brw->state.nr_atoms = sizeof(atoms)/sizeof(*atoms);
 117    _mesa_memcpy(brw->state.atoms, atoms, sizeof(atoms));
 118
 119    /* Patch in a pointer to the dynamic state atom:
 120     */
 121    for (i = 0; i < brw->state.nr_atoms; i++)
 122       if (brw->state.atoms[i] == NULL)
 123          brw->state.atoms[i] = &brw->curbe.tracked_state;
 124
 125    _mesa_memcpy(&brw->curbe.tracked_state,
 126                 &brw_constant_buffer,
 127                 sizeof(brw_constant_buffer));
 128 }
 129
 130
 131 void brw_destroy_state( struct brw_context *brw )
 132 {
 133    if (brw->state.atoms) {
 134       _mesa_free(brw->state.atoms);
 135       brw->state.atoms = NULL;
 136    }
 137
 138    brw_destroy_cache(brw);
 139    brw_destroy_batch_cache(brw);
 140 }
 141
 142 /***********************************************************************
 143  */
 144
 145 static GLboolean check_state( const struct brw_state_flags *a,
 146                               const struct brw_state_flags *b )
 147 {
 148    return ((a->mesa & b->mesa) ||
 149            (a->brw & b->brw) ||
 150            (a->cache & b->cache));
 151 }
 152
 153 static void accumulate_state( struct brw_state_flags *a,
 154                               const struct brw_state_flags *b )
 155 {
 156    a->mesa |= b->mesa;
 157    a->brw |= b->brw;
 158    a->cache |= b->cache;
 159 }
 160
 161
 162 static void xor_states( struct brw_state_flags *result,
 163                              const struct brw_state_flags *a,
 164                               const struct brw_state_flags *b )
 165 {
 166    result->mesa = a->mesa ^ b->mesa;
 167    result->brw = a->brw ^ b->brw;
 168    result->cache = a->cache ^ b->cache;
 169 }
 170
 171 static void
 172 brw_clear_validated_bos(struct brw_context *brw)
 173 {
 174    int i;
 175
 176    /* Clear the last round of validated bos */
 177    for (i = 0; i < brw->state.validated_bo_count; i++) {
 178       dri_bo_unreference(brw->state.validated_bos[i]);
 179       brw->state.validated_bos[i] = NULL;
 180    }
 181    brw->state.validated_bo_count = 0;
 182 }
 183
 184 /***********************************************************************
 185  * Emit all state:
 186  */
 187 void brw_validate_state( struct brw_context *brw )
 188 {
 189    struct intel_context *intel = &brw->intel;
 190    struct brw_state_flags *state = &brw->state.dirty;
 191    GLuint i;
 192
 193    brw_clear_validated_bos(brw);
 194
 195    state->mesa |= brw->intel.NewGLState;
 196    brw->intel.NewGLState = 0;
 197
 198    brw_add_validated_bo(brw, intel->batch->buf);
 199
 200    if (brw->emit_state_always) {
 201       state->mesa |= ~0;
 202       state->brw |= ~0;
 203    }
 204
 205    /* texenv program needs to notify us somehow when this happens:
 206     * Some confusion about which state flag should represent this change.
 207     */
 208    if (brw->fragment_program != brw->attribs.FragmentProgram->_Current) {
 209       brw->fragment_program = brw->attribs.FragmentProgram->_Current;
 210       brw->state.dirty.mesa |= _NEW_PROGRAM;
 211       brw->state.dirty.brw |= BRW_NEW_FRAGMENT_PROGRAM;
 212    }
 213
 214    if (brw->vertex_program != brw->attribs.VertexProgram->_Current) {
 215       brw->vertex_program = brw->attribs.VertexProgram->_Current;
 216       brw->state.dirty.brw |= BRW_NEW_VERTEX_PROGRAM;
 217    }
 218
 219    if (state->mesa == 0 &&
 220        state->cache == 0 &&
 221        state->brw == 0)
 222       return;
 223
 224    if (brw->state.dirty.brw & BRW_NEW_CONTEXT)
 225       brw_clear_batch_cache_flush(brw);
 226
 227    brw->intel.Fallback = 0;
 228
 229    /* do prepare stage for all atoms */
 230    for (i = 0; i < Elements(atoms); i++) {
 231       const struct brw_tracked_state *atom = brw->state.atoms[i];
 232
 233       if (brw->intel.Fallback)
 234          break;
 235
 236       if (check_state(state, &atom->dirty)) {
 237          if (atom->prepare) {
 238             atom->prepare(brw);
 239         }
 240       }
 241    }
 242 }
 243
 244
 245 void brw_upload_state(struct brw_context *brw)
 246 {
 247    struct brw_state_flags *state = &brw->state.dirty;
 248    int i;
 249
 250    brw_clear_validated_bos(brw);
 251
 252    if (INTEL_DEBUG) {
 253       /* Debug version which enforces various sanity checks on the
 254        * state flags which are generated and checked to help ensure
 255        * state atoms are ordered correctly in the list.
 256        */
 257       struct brw_state_flags examined, prev;
 258       _mesa_memset(&examined, 0, sizeof(examined));
 259       prev = *state;
 260
 261       for (i = 0; i < brw->state.nr_atoms; i++) {
 262          const struct brw_tracked_state *atom = brw->state.atoms[i];
 263          struct brw_state_flags generated;
 264
 265          assert(atom->dirty.mesa ||
 266                 atom->dirty.brw ||
 267                 atom->dirty.cache);
 268
 269          if (brw->intel.Fallback)
 270             break;
 271
 272          if (check_state(state, &atom->dirty)) {
 273             if (atom->emit) {
 274                atom->emit( brw );
 275             }
 276          }
 277
 278          accumulate_state(&examined, &atom->dirty);
 279
 280          /* generated = (prev ^ state)
 281           * if (examined & generated)
 282           *     fail;
 283           */
 284          xor_states(&generated, &prev, state);
 285          assert(!check_state(&examined, &generated));
 286          prev = *state;
 287       }
 288    }
 289    else {
 290       for (i = 0; i < Elements(atoms); i++) {
 291          const struct brw_tracked_state *atom = brw->state.atoms[i];
 292
 293          if (brw->intel.Fallback)
 294             break;
 295
 296          if (check_state(state, &atom->dirty)) {
 297             if (atom->emit) {
 298                atom->emit( brw );
 299             }
 300          }
 301       }
 302    }
 303
 304    if (!brw->intel.Fallback)
 305       memset(state, 0, sizeof(*state));
 306 }