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 #include "brw_debug.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_wm_input_sizes,
  50    &brw_vs_prog,
  51    &brw_gs_prog,
  52    &brw_clip_prog,
  53    &brw_sf_prog,
  54    &brw_wm_prog,
  55
  56    /* Once all the programs are done, we know how large urb entry
  57     * sizes need to be and can decide if we need to change the urb
  58     * layout.
  59     */
  60    &brw_curbe_offsets,
  61    &brw_recalculate_urb_fence,
  62
  63    &brw_cc_vp,
  64    &brw_cc_unit,
  65
  66    &brw_vs_surfaces,            /* must do before unit */
  67    &brw_wm_constant_surface,    /* must do before wm surfaces/bind bo */
  68    &brw_wm_surfaces,            /* must do before samplers and unit */
  69    &brw_wm_samplers,
  70
  71    &brw_wm_unit,
  72    &brw_sf_vp,
  73    &brw_sf_unit,
  74    &brw_vs_unit,                /* always required, enabled or not */
  75    &brw_clip_unit,
  76    &brw_gs_unit,
  77
  78    /* Command packets:
  79     */
  80    &brw_invarient_state,
  81    &brw_state_base_address,
  82
  83    &brw_binding_table_pointers,
  84    &brw_blend_constant_color,
  85
  86    &brw_depthbuffer,
  87    &brw_polygon_stipple,
  88    &brw_line_stipple,
  89
  90    &brw_psp_urb_cbs,
  91
  92    &brw_drawing_rect,
  93    &brw_indices,
  94    &brw_index_buffer,
  95    &brw_vertices,
  96
  97    &brw_constant_buffer
  98 };
  99
 100
 101 void brw_init_state( struct brw_context *brw )
 102 {
 103    brw_init_caches(brw);
 104 }
 105
 106
 107 void brw_destroy_state( struct brw_context *brw )
 108 {
 109    brw_destroy_caches(brw);
 110    brw_destroy_batch_cache(brw);
 111 }
 112
 113 /***********************************************************************
 114  */
 115
 116 static GLboolean check_state( const struct brw_state_flags *a,
 117                               const struct brw_state_flags *b )
 118 {
 119    return ((a->mesa & b->mesa) ||
 120            (a->brw & b->brw) ||
 121            (a->cache & b->cache));
 122 }
 123
 124 static void accumulate_state( struct brw_state_flags *a,
 125                               const struct brw_state_flags *b )
 126 {
 127    a->mesa |= b->mesa;
 128    a->brw |= b->brw;
 129    a->cache |= b->cache;
 130 }
 131
 132
 133 static void xor_states( struct brw_state_flags *result,
 134                              const struct brw_state_flags *a,
 135                               const struct brw_state_flags *b )
 136 {
 137    result->mesa = a->mesa ^ b->mesa;
 138    result->brw = a->brw ^ b->brw;
 139    result->cache = a->cache ^ b->cache;
 140 }
 141
 142 static void
 143 brw_clear_validated_bos(struct brw_context *brw)
 144 {
 145    int i;
 146
 147    /* Clear the last round of validated bos */
 148    for (i = 0; i < brw->state.validated_bo_count; i++) {
 149       brw->sws->bo_unreference(brw->state.validated_bos[i]);
 150       brw->state.validated_bos[i] = NULL;
 151    }
 152    brw->state.validated_bo_count = 0;
 153 }
 154
 155
 156 /***********************************************************************
 157  * Emit all state:
 158  */
 159 enum pipe_error brw_validate_state( struct brw_context *brw )
 160 {
 161    struct brw_state_flags *state = &brw->state.dirty;
 162    GLuint i;
 163    int ret;
 164
 165    brw_clear_validated_bos(brw);
 166    brw_add_validated_bo(brw, brw->batch->buf);
 167
 168    if (brw->flags.always_emit_state) {
 169       state->mesa |= ~0;
 170       state->brw |= ~0;
 171       state->cache |= ~0;
 172    }
 173
 174    if (state->mesa == 0 &&
 175        state->cache == 0 &&
 176        state->brw == 0)
 177       return 0;
 178
 179    if (brw->state.dirty.brw & BRW_NEW_CONTEXT)
 180       brw_clear_batch_cache(brw);
 181
 182    /* do prepare stage for all atoms */
 183    for (i = 0; i < Elements(atoms); i++) {
 184       const struct brw_tracked_state *atom = atoms[i];
 185
 186       if (check_state(state, &atom->dirty)) {
 187          if (atom->prepare) {
 188             ret = atom->prepare(brw);
 189             if (ret)
 190                return ret;
 191         }
 192       }
 193    }
 194
 195    /* Make sure that the textures which are referenced by the current
 196     * brw fragment program are actually present/valid.
 197     * If this fails, we can experience GPU lock-ups.
 198     */
 199    {
 200       const struct brw_fragment_shader *fp = brw->curr.fragment_shader;
 201       if (fp) {
 202          assert(fp->info.file_max[TGSI_FILE_SAMPLER] < brw->curr.num_samplers &&
 203                 fp->info.texture_max < brw->curr.num_textures);
 204       }
 205    }
 206
 207    return 0;
 208 }
 209
 210
 211 enum pipe_error brw_upload_state(struct brw_context *brw)
 212 {
 213    struct brw_state_flags *state = &brw->state.dirty;
 214    int ret;
 215    int i;
 216
 217    brw_clear_validated_bos(brw);
 218
 219    if (BRW_DEBUG) {
 220       /* Debug version which enforces various sanity checks on the
 221        * state flags which are generated and checked to help ensure
 222        * state atoms are ordered correctly in the list.
 223        */
 224       struct brw_state_flags examined, prev;
 225       memset(&examined, 0, sizeof(examined));
 226       prev = *state;
 227
 228       for (i = 0; i < Elements(atoms); i++) {
 229          const struct brw_tracked_state *atom = atoms[i];
 230          struct brw_state_flags generated;
 231
 232          assert(atom->dirty.mesa ||
 233                 atom->dirty.brw ||
 234                 atom->dirty.cache);
 235
 236          if (check_state(state, &atom->dirty)) {
 237             if (atom->emit) {
 238                ret = atom->emit( brw );
 239                if (ret)
 240                   return ret;
 241             }
 242          }
 243
 244          accumulate_state(&examined, &atom->dirty);
 245
 246          /* generated = (prev ^ state)
 247           * if (examined & generated)
 248           *     fail;
 249           */
 250          xor_states(&generated, &prev, state);
 251          assert(!check_state(&examined, &generated));
 252          prev = *state;
 253       }
 254    }
 255    else {
 256       for (i = 0; i < Elements(atoms); i++) {
 257          const struct brw_tracked_state *atom = atoms[i];
 258
 259          if (check_state(state, &atom->dirty)) {
 260             if (atom->emit) {
 261                ret = atom->emit( brw );
 262                if (ret)
 263                   return ret;
 264             }
 265          }
 266       }
 267    }
 268
 269    if (BRW_DEBUG & DEBUG_STATE) {
 270       brw_update_dirty_counts( state->mesa,
 271                                state->brw,
 272                                state->cache );
 273    }
 274
 275    /* Clear dirty flags:
 276     */
 277    memset(state, 0, sizeof(*state));
 278    return 0;
 279 }