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 "dri_bufmgr.h"
  37 #include "intel_batchbuffer.h"
  38
  39 /* This is used to initialize brw->state.atoms[].  We could use this
  40  * list directly except for a single atom, brw_constant_buffer, which
  41  * has a .dirty value which changes according to the parameters of the
  42  * current fragment and vertex programs, and so cannot be a static
  43  * value.
  44  */
  45 const struct brw_tracked_state *atoms[] =
  46 {
  47    &brw_check_fallback,
  48
  49    &brw_tnl_vertprog,
  50    &brw_active_vertprog,
  51    &brw_wm_input_sizes,
  52    &brw_vs_prog,
  53    &brw_gs_prog,
  54    &brw_clip_prog,
  55    &brw_sf_prog,
  56    &brw_wm_prog,
  57
  58    /* Once all the programs are done, we know how large urb entry
  59     * sizes need to be and can decide if we need to change the urb
  60     * layout.
  61     */
  62    &brw_curbe_offsets,
  63    &brw_recalculate_urb_fence,
  64
  65
  66    &brw_cc_vp,
  67    &brw_cc_unit,
  68
  69    &brw_wm_surfaces,            /* must do before samplers */
  70    &brw_wm_samplers,
  71
  72    &brw_wm_unit,
  73    &brw_sf_vp,
  74    &brw_sf_unit,
  75    &brw_vs_unit,                /* always required, enabled or not */
  76    &brw_clip_unit,
  77    &brw_gs_unit,
  78
  79    /* Command packets:
  80     */
  81    &brw_invarient_state,
  82    &brw_state_base_address,
  83    &brw_pipe_control,
  84
  85    &brw_binding_table_pointers,
  86    &brw_blend_constant_color,
  87
  88    &brw_depthbuffer,
  89
  90    &brw_polygon_stipple,
  91    &brw_polygon_stipple_offset,
  92
  93    &brw_line_stipple,
  94    &brw_aa_line_parameters,
  95    /* Ordering of the commands below is documented as fixed.
  96     */
  97 #if 0
  98    &brw_pipelined_state_pointers,
  99    &brw_urb_fence,
 100    &brw_constant_buffer_state,
 101 #else
 102    &brw_psp_urb_cbs,
 103 #endif
 104
 105
 106    NULL,                        /* brw_constant_buffer */
 107 };
 108
 109
 110 void brw_init_state( struct brw_context *brw )
 111 {
 112    GLuint i;
 113
 114    brw_init_cache(brw);
 115
 116    brw->state.atoms = _mesa_malloc(sizeof(atoms));
 117    brw->state.nr_atoms = sizeof(atoms)/sizeof(*atoms);
 118    _mesa_memcpy(brw->state.atoms, atoms, sizeof(atoms));
 119
 120    /* Patch in a pointer to the dynamic state atom:
 121     */
 122    for (i = 0; i < brw->state.nr_atoms; i++)
 123       if (brw->state.atoms[i] == NULL)
 124          brw->state.atoms[i] = &brw->curbe.tracked_state;
 125
 126    _mesa_memcpy(&brw->curbe.tracked_state,
 127                 &brw_constant_buffer,
 128                 sizeof(brw_constant_buffer));
 129 }
 130
 131
 132 void brw_destroy_state( struct brw_context *brw )
 133 {
 134    if (brw->state.atoms) {
 135       _mesa_free(brw->state.atoms);
 136       brw->state.atoms = NULL;
 137    }
 138
 139    brw_destroy_cache(brw);
 140    brw_destroy_batch_cache(brw);
 141 }
 142
 143 /***********************************************************************
 144  */
 145
 146 static GLboolean check_state( const struct brw_state_flags *a,
 147                               const struct brw_state_flags *b )
 148 {
 149    return ((a->mesa & b->mesa) ||
 150            (a->brw & b->brw) ||
 151            (a->cache & b->cache));
 152 }
 153
 154 static void accumulate_state( struct brw_state_flags *a,
 155                               const struct brw_state_flags *b )
 156 {
 157    a->mesa |= b->mesa;
 158    a->brw |= b->brw;
 159    a->cache |= b->cache;
 160 }
 161
 162
 163 static void xor_states( struct brw_state_flags *result,
 164                              const struct brw_state_flags *a,
 165                               const struct brw_state_flags *b )
 166 {
 167    result->mesa = a->mesa ^ b->mesa;
 168    result->brw = a->brw ^ b->brw;
 169    result->cache = a->cache ^ b->cache;
 170 }
 171
 172
 173 /***********************************************************************
 174  * Emit all state:
 175  */
 176 int brw_validate_state( struct brw_context *brw )
 177 {
 178    struct brw_state_flags *state = &brw->state.dirty;
 179    GLuint i, ret, count;
 180
 181    state->mesa |= brw->intel.NewGLState;
 182    brw->intel.NewGLState = 0;
 183
 184    if (brw->wrap)
 185       state->brw |= BRW_NEW_CONTEXT;
 186
 187    if (brw->emit_state_always) {
 188       state->mesa |= ~0;
 189       state->brw |= ~0;
 190    }
 191
 192    /* texenv program needs to notify us somehow when this happens:
 193     * Some confusion about which state flag should represent this change.
 194     */
 195    if (brw->fragment_program != brw->attribs.FragmentProgram->_Current) {
 196       brw->fragment_program = brw->attribs.FragmentProgram->_Current;
 197       brw->state.dirty.mesa |= _NEW_PROGRAM;
 198       brw->state.dirty.brw |= BRW_NEW_FRAGMENT_PROGRAM;
 199    }
 200
 201
 202    if (state->mesa == 0 &&
 203        state->cache == 0 &&
 204        state->brw == 0)
 205       return 0;
 206
 207    if (brw->state.dirty.brw & BRW_NEW_CONTEXT)
 208       brw_clear_batch_cache_flush(brw);
 209
 210    brw->intel.Fallback = 0;
 211
 212    count = 0;
 213
 214    /* do prepare stage for all atoms */
 215    for (i = 0; i < Elements(atoms); i++) {
 216       const struct brw_tracked_state *atom = brw->state.atoms[i];
 217
 218       if (brw->intel.Fallback)
 219          break;
 220
 221       if (check_state(state, &atom->dirty)) {
 222          if (atom->prepare) {
 223             ret = atom->prepare(brw);
 224             if (ret)
 225                return ret;
 226         }
 227       }
 228    }
 229
 230    if (brw->intel.Fallback)
 231       return 0;
 232
 233    if (INTEL_DEBUG) {
 234       /* Debug version which enforces various sanity checks on the
 235        * state flags which are generated and checked to help ensure
 236        * state atoms are ordered correctly in the list.
 237        */
 238       struct brw_state_flags examined, prev;
 239       _mesa_memset(&examined, 0, sizeof(examined));
 240       prev = *state;
 241
 242       for (i = 0; i < brw->state.nr_atoms; i++) {
 243          const struct brw_tracked_state *atom = brw->state.atoms[i];
 244          struct brw_state_flags generated;
 245
 246          assert(atom->dirty.mesa ||
 247                 atom->dirty.brw ||
 248                 atom->dirty.cache);
 249
 250          if (brw->intel.Fallback)
 251             break;
 252
 253          if (check_state(state, &atom->dirty)) {
 254             if (atom->emit)
 255                atom->emit( brw );
 256          }
 257
 258          accumulate_state(&examined, &atom->dirty);
 259
 260          /* generated = (prev ^ state)
 261           * if (examined & generated)
 262           *     fail;
 263           */
 264          xor_states(&generated, &prev, state);
 265          assert(!check_state(&examined, &generated));
 266          prev = *state;
 267       }
 268    }
 269    else {
 270       for (i = 0; i < Elements(atoms); i++) {
 271          const struct brw_tracked_state *atom = brw->state.atoms[i];
 272
 273          if (brw->intel.Fallback)
 274             break;
 275
 276          if (check_state(state, &atom->dirty)) {
 277             if (atom->emit)
 278                atom->emit( brw );
 279          }
 280       }
 281    }
 282
 283    if (!brw->intel.Fallback)
 284       memset(state, 0, sizeof(*state));
 285    return 0;
 286 }