src/gallium/drivers/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 "brw_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    &brw_cc_vp,
  63    &brw_cc_unit,
  64
  65    &brw_vs_surfaces,            /* must do before unit */
  66    &brw_wm_constant_surface,    /* must do before wm surfaces/bind bo */
  67    &brw_wm_surfaces,            /* must do before samplers and unit */
  68    &brw_wm_samplers,
  69
  70    &brw_wm_unit,
  71    &brw_sf_vp,
  72    &brw_sf_unit,
  73    &brw_vs_unit,                /* always required, enabled or not */
  74    &brw_clip_unit,
  75    &brw_gs_unit,
  76
  77    /* Command packets:
  78     */
  79    &brw_invarient_state,
  80    &brw_state_base_address,
  81
  82    &brw_binding_table_pointers,
  83    &brw_blend_constant_color,
  84
  85    &brw_depthbuffer,
  86
  87    &brw_polygon_stipple,
  88    &brw_polygon_stipple_offset,
  89
  90    &brw_line_stipple,
  91    &brw_aa_line_parameters,
  92
  93    &brw_psp_urb_cbs,
  94
  95    &brw_drawing_rect,
  96    &brw_indices,
  97    &brw_index_buffer,
  98    &brw_vertices,
  99
 100    &brw_constant_buffer
 101 };
 102
 103
 104 void brw_init_state( struct brw_context *brw )
 105 {
 106    brw_init_caches(brw);
 107 }
 108
 109
 110 void brw_destroy_state( struct brw_context *brw )
 111 {
 112    brw_destroy_caches(brw);
 113    brw_destroy_batch_cache(brw);
 114 }
 115
 116 /***********************************************************************
 117  */
 118
 119 static GLboolean check_state( const struct brw_state_flags *a,
 120                               const struct brw_state_flags *b )
 121 {
 122    return ((a->mesa & b->mesa) ||
 123            (a->brw & b->brw) ||
 124            (a->cache & b->cache));
 125 }
 126
 127 static void accumulate_state( struct brw_state_flags *a,
 128                               const struct brw_state_flags *b )
 129 {
 130    a->mesa |= b->mesa;
 131    a->brw |= b->brw;
 132    a->cache |= b->cache;
 133 }
 134
 135
 136 static void xor_states( struct brw_state_flags *result,
 137                              const struct brw_state_flags *a,
 138                               const struct brw_state_flags *b )
 139 {
 140    result->mesa = a->mesa ^ b->mesa;
 141    result->brw = a->brw ^ b->brw;
 142    result->cache = a->cache ^ b->cache;
 143 }
 144
 145 static void
 146 brw_clear_validated_bos(struct brw_context *brw)
 147 {
 148    int i;
 149
 150    /* Clear the last round of validated bos */
 151    for (i = 0; i < brw->state.validated_bo_count; i++) {
 152       brw->sws->bo_unreference(brw->state.validated_bos[i]);
 153       brw->state.validated_bos[i] = NULL;
 154    }
 155    brw->state.validated_bo_count = 0;
 156 }
 157
 158
 159 /***********************************************************************
 160  * Emit all state:
 161  */
 162 enum pipe_error brw_validate_state( struct brw_context *brw )
 163 {
 164    struct brw_state_flags *state = &brw->state.dirty;
 165    GLuint i;
 166
 167    brw_clear_validated_bos(brw);
 168    brw_add_validated_bo(brw, intel->batch->buf);
 169
 170    if (brw->emit_state_always) {
 171       state->mesa |= ~0;
 172       state->brw |= ~0;
 173       state->cache |= ~0;
 174    }
 175
 176    if (state->mesa == 0 &&
 177        state->cache == 0 &&
 178        state->brw == 0)
 179       return 0;
 180
 181    if (brw->state.dirty.brw & BRW_NEW_CONTEXT)
 182       brw_clear_batch_cache(brw);
 183
 184    /* do prepare stage for all atoms */
 185    for (i = 0; i < Elements(atoms); i++) {
 186       const struct brw_tracked_state *atom = atoms[i];
 187
 188       if (check_state(state, &atom->dirty)) {
 189          if (atom->prepare) {
 190             ret = atom->prepare(brw);
 191             if (ret)
 192                return ret;
 193         }
 194       }
 195    }
 196
 197    /* Make sure that the textures which are referenced by the current
 198     * brw fragment program are actually present/valid.
 199     * If this fails, we can experience GPU lock-ups.
 200     */
 201    {
 202       const struct brw_fragment_program *fp = brw->fragment_program;
 203       if (fp) {
 204          assert(fp->info.max_sampler <= brw->nr_samplers &&
 205                 fp->info.max_texture <= brw->nr_textures);
 206       }
 207    }
 208
 209    return 0;
 210 }
 211
 212
 213 enum pipe_error brw_upload_state(struct brw_context *brw)
 214 {
 215    struct brw_state_flags *state = &brw->state.dirty;
 216    int i;
 217    static int dirty_count = 0;
 218
 219    brw_clear_validated_bos(brw);
 220
 221    if (INTEL_DEBUG) {
 222       /* Debug version which enforces various sanity checks on the
 223        * state flags which are generated and checked to help ensure
 224        * state atoms are ordered correctly in the list.
 225        */
 226       struct brw_state_flags examined, prev;
 227       _mesa_memset(&examined, 0, sizeof(examined));
 228       prev = *state;
 229
 230       for (i = 0; i < Elements(atoms); i++) {
 231          const struct brw_tracked_state *atom = atoms[i];
 232          struct brw_state_flags generated;
 233
 234          assert(atom->dirty.mesa ||
 235                 atom->dirty.brw ||
 236                 atom->dirty.cache);
 237
 238          if (check_state(state, &atom->dirty)) {
 239             if (atom->emit) {
 240                ret = atom->emit( brw );
 241                if (ret)
 242                   return ret;
 243             }
 244          }
 245
 246          accumulate_state(&examined, &atom->dirty);
 247
 248          /* generated = (prev ^ state)
 249           * if (examined & generated)
 250           *     fail;
 251           */
 252          xor_states(&generated, &prev, state);
 253          assert(!check_state(&examined, &generated));
 254          prev = *state;
 255       }
 256    }
 257    else {
 258       for (i = 0; i < Elements(atoms); i++) {
 259          const struct brw_tracked_state *atom = atoms[i];
 260
 261          if (check_state(state, &atom->dirty)) {
 262             if (atom->emit) {
 263                ret = atom->emit( brw );
 264                if (ret)
 265                   return ret;
 266             }
 267          }
 268       }
 269    }
 270
 271    if (INTEL_DEBUG & DEBUG_STATE) {
 272       brw_update_dirty_count(mesa_bits, state->mesa);
 273       brw_update_dirty_count(brw_bits, state->brw);
 274       brw_update_dirty_count(cache_bits, state->cache);
 275       if (dirty_count++ % 1000 == 0) {
 276          brw_print_dirty_count(mesa_bits, state->mesa);
 277          brw_print_dirty_count(brw_bits, state->brw);
 278          brw_print_dirty_count(cache_bits, state->cache);
 279          debug_printf("\n");
 280       }
 281    }
 282
 283    /* Clear dirty flags:
 284     */
 285    memset(state, 0, sizeof(*state));
 286 }