src/gallium/drivers/ilo/ilo_3d_pipeline.c

   1 /*
   2  * Mesa 3-D graphics library
   3  *
   4  * Copyright (C) 2013 LunarG, Inc.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the "Software"),
   8  * to deal in the Software without restriction, including without limitation
   9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10  * and/or sell copies of the Software, and to permit persons to whom the
  11  * Software is furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included
  14  * in all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  21  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  22  * DEALINGS IN THE SOFTWARE.
  23  *
  24  * Authors:
  25  *    Chia-I Wu <olv@lunarg.com>
  26  */
  27
  28 #include "util/u_prim.h"
  29 #include "intel_winsys.h"
  30
  31 #include "ilo_blitter.h"
  32 #include "ilo_context.h"
  33 #include "ilo_cp.h"
  34 #include "ilo_state.h"
  35 #include "ilo_3d_pipeline_gen6.h"
  36 #include "ilo_3d_pipeline_gen7.h"
  37 #include "ilo_3d_pipeline.h"
  38
  39 /* in U0.4 */
  40 struct sample_position {
  41    uint8_t x, y;
  42 };
  43
  44 /* \see gen6_get_sample_position() */
  45 static const struct sample_position sample_position_1x[1] = {
  46    {  8,  8 },
  47 };
  48
  49 static const struct sample_position sample_position_4x[4] = {
  50    {  6,  2 }, /* distance from the center is sqrt(40) */
  51    { 14,  6 }, /* distance from the center is sqrt(40) */
  52    {  2, 10 }, /* distance from the center is sqrt(40) */
  53    { 10, 14 }, /* distance from the center is sqrt(40) */
  54 };
  55
  56 static const struct sample_position sample_position_8x[8] = {
  57    {  7,  9 }, /* distance from the center is sqrt(2) */
  58    {  9, 13 }, /* distance from the center is sqrt(26) */
  59    { 11,  3 }, /* distance from the center is sqrt(34) */
  60    { 13, 11 }, /* distance from the center is sqrt(34) */
  61    {  1,  7 }, /* distance from the center is sqrt(50) */
  62    {  5,  1 }, /* distance from the center is sqrt(58) */
  63    { 15,  5 }, /* distance from the center is sqrt(58) */
  64    {  3, 15 }, /* distance from the center is sqrt(74) */
  65 };
  66
  67 struct ilo_3d_pipeline *
  68 ilo_3d_pipeline_create(struct ilo_cp *cp, const struct ilo_dev_info *dev)
  69 {
  70    struct ilo_3d_pipeline *p;
  71    int i;
  72
  73    p = CALLOC_STRUCT(ilo_3d_pipeline);
  74    if (!p)
  75       return NULL;
  76
  77    p->cp = cp;
  78    p->dev = dev;
  79
  80    switch (p->dev->gen) {
  81    case ILO_GEN(6):
  82       ilo_3d_pipeline_init_gen6(p);
  83       break;
  84    case ILO_GEN(7):
  85    case ILO_GEN(7.5):
  86       ilo_3d_pipeline_init_gen7(p);
  87       break;
  88    default:
  89       assert(!"unsupported GEN");
  90       FREE(p);
  91       return NULL;
  92       break;
  93    }
  94
  95    p->invalidate_flags = ILO_3D_PIPELINE_INVALIDATE_ALL;
  96
  97    p->workaround_bo = intel_winsys_alloc_buffer(p->cp->winsys,
  98          "PIPE_CONTROL workaround", 4096, 0);
  99    if (!p->workaround_bo) {
 100       ilo_warn("failed to allocate PIPE_CONTROL workaround bo\n");
 101       FREE(p);
 102       return NULL;
 103    }
 104
 105    p->packed_sample_position_1x =
 106       sample_position_1x[0].x << 4 |
 107       sample_position_1x[0].y;
 108
 109    /* pack into dwords */
 110    for (i = 0; i < 4; i++) {
 111       p->packed_sample_position_4x |=
 112          sample_position_4x[i].x << (8 * i + 4) |
 113          sample_position_4x[i].y << (8 * i);
 114
 115       p->packed_sample_position_8x[0] |=
 116          sample_position_8x[i].x << (8 * i + 4) |
 117          sample_position_8x[i].y << (8 * i);
 118
 119       p->packed_sample_position_8x[1] |=
 120          sample_position_8x[4 + i].x << (8 * i + 4) |
 121          sample_position_8x[4 + i].y << (8 * i);
 122    }
 123
 124    return p;
 125 }
 126
 127 void
 128 ilo_3d_pipeline_destroy(struct ilo_3d_pipeline *p)
 129 {
 130    if (p->workaround_bo)
 131       intel_bo_unreference(p->workaround_bo);
 132
 133    FREE(p);
 134 }
 135
 136 static void
 137 handle_invalid_batch_bo(struct ilo_3d_pipeline *p, bool unset)
 138 {
 139    if (p->invalidate_flags & ILO_3D_PIPELINE_INVALIDATE_BATCH_BO) {
 140       if (p->dev->gen == ILO_GEN(6))
 141          p->state.has_gen6_wa_pipe_control = false;
 142
 143       if (unset)
 144          p->invalidate_flags &= ~ILO_3D_PIPELINE_INVALIDATE_BATCH_BO;
 145    }
 146 }
 147
 148 /**
 149  * Emit context states and 3DPRIMITIVE.
 150  */
 151 bool
 152 ilo_3d_pipeline_emit_draw(struct ilo_3d_pipeline *p,
 153                           const struct ilo_context *ilo,
 154                           int *prim_generated, int *prim_emitted)
 155 {
 156    bool success;
 157
 158    if (ilo->dirty & ILO_DIRTY_SO &&
 159        ilo->so.enabled && !ilo->so.append_bitmask) {
 160       /*
 161        * We keep track of the SVBI in the driver, so that we can restore it
 162        * when the HW context is invalidated (by another process).  The value
 163        * needs to be reset when stream output is enabled and the targets are
 164        * changed.
 165        */
 166       p->state.so_num_vertices = 0;
 167
 168       /* on GEN7+, we need SOL_RESET to reset the SO write offsets */
 169       if (p->dev->gen >= ILO_GEN(7))
 170          ilo_cp_set_one_off_flags(p->cp, INTEL_EXEC_GEN7_SOL_RESET);
 171    }
 172
 173
 174    while (true) {
 175       struct ilo_cp_jmp_buf jmp;
 176       int err;
 177
 178       /* we will rewind if aperture check below fails */
 179       ilo_cp_setjmp(p->cp, &jmp);
 180
 181       handle_invalid_batch_bo(p, false);
 182
 183       /* draw! */
 184       ilo_cp_assert_no_implicit_flush(p->cp, true);
 185       p->emit_draw(p, ilo);
 186       ilo_cp_assert_no_implicit_flush(p->cp, false);
 187
 188       err = intel_winsys_check_aperture_space(ilo->winsys, &p->cp->bo, 1);
 189       if (!err) {
 190          success = true;
 191          break;
 192       }
 193
 194       /* rewind */
 195       ilo_cp_longjmp(p->cp, &jmp);
 196
 197       if (ilo_cp_empty(p->cp)) {
 198          success = false;
 199          break;
 200       }
 201       else {
 202          /* flush and try again */
 203          ilo_cp_flush(p->cp, "out of aperture");
 204       }
 205    }
 206
 207    if (success) {
 208       const int num_verts =
 209          u_vertices_per_prim(u_reduced_prim(ilo->draw->mode));
 210       const int max_emit =
 211          (p->state.so_max_vertices - p->state.so_num_vertices) / num_verts;
 212       const int generated =
 213          u_reduced_prims_for_vertices(ilo->draw->mode, ilo->draw->count);
 214       const int emitted = MIN2(generated, max_emit);
 215
 216       p->state.so_num_vertices += emitted * num_verts;
 217
 218       if (prim_generated)
 219          *prim_generated = generated;
 220
 221       if (prim_emitted)
 222          *prim_emitted = emitted;
 223    }
 224
 225    p->invalidate_flags = 0x0;
 226
 227    return success;
 228 }
 229
 230 /**
 231  * Emit PIPE_CONTROL to flush all caches.
 232  */
 233 void
 234 ilo_3d_pipeline_emit_flush(struct ilo_3d_pipeline *p)
 235 {
 236    handle_invalid_batch_bo(p, true);
 237    p->emit_flush(p);
 238 }
 239
 240 /**
 241  * Emit PIPE_CONTROL with PIPE_CONTROL_WRITE_TIMESTAMP post-sync op.
 242  */
 243 void
 244 ilo_3d_pipeline_emit_write_timestamp(struct ilo_3d_pipeline *p,
 245                                      struct intel_bo *bo, int index)
 246 {
 247    handle_invalid_batch_bo(p, true);
 248    p->emit_write_timestamp(p, bo, index);
 249 }
 250
 251 /**
 252  * Emit PIPE_CONTROL with PIPE_CONTROL_WRITE_DEPTH_COUNT post-sync op.
 253  */
 254 void
 255 ilo_3d_pipeline_emit_write_depth_count(struct ilo_3d_pipeline *p,
 256                                        struct intel_bo *bo, int index)
 257 {
 258    handle_invalid_batch_bo(p, true);
 259    p->emit_write_depth_count(p, bo, index);
 260 }
 261
 262 void
 263 ilo_3d_pipeline_emit_rectlist(struct ilo_3d_pipeline *p,
 264                               const struct ilo_blitter *blitter)
 265 {
 266    const int max_len = ilo_3d_pipeline_estimate_size(p,
 267          ILO_3D_PIPELINE_RECTLIST, blitter);
 268
 269    if (max_len > ilo_cp_space(p->cp))
 270       ilo_cp_flush(p->cp, "out of space");
 271
 272    while (true) {
 273       struct ilo_cp_jmp_buf jmp;
 274       int err;
 275
 276       /* we will rewind if aperture check below fails */
 277       ilo_cp_setjmp(p->cp, &jmp);
 278
 279       handle_invalid_batch_bo(p, false);
 280
 281       ilo_cp_assert_no_implicit_flush(p->cp, true);
 282       p->emit_rectlist(p, blitter);
 283       ilo_cp_assert_no_implicit_flush(p->cp, false);
 284
 285       err = intel_winsys_check_aperture_space(blitter->ilo->winsys,
 286             &p->cp->bo, 1);
 287       if (err) {
 288          /* rewind */
 289          ilo_cp_longjmp(p->cp, &jmp);
 290
 291          /* flush and try again */
 292          if (!ilo_cp_empty(p->cp)) {
 293             ilo_cp_flush(p->cp, "out of aperture");
 294             continue;
 295          }
 296       }
 297
 298       break;
 299    }
 300
 301    ilo_3d_pipeline_invalidate(p, ILO_3D_PIPELINE_INVALIDATE_HW);
 302 }
 303
 304 void
 305 ilo_3d_pipeline_get_sample_position(struct ilo_3d_pipeline *p,
 306                                     unsigned sample_count,
 307                                     unsigned sample_index,
 308                                     float *x, float *y)
 309 {
 310    const struct sample_position *pos;
 311
 312    switch (sample_count) {
 313    case 1:
 314       assert(sample_index < Elements(sample_position_1x));
 315       pos = sample_position_1x;
 316       break;
 317    case 4:
 318       assert(sample_index < Elements(sample_position_4x));
 319       pos = sample_position_4x;
 320       break;
 321    case 8:
 322       assert(sample_index < Elements(sample_position_8x));
 323       pos = sample_position_8x;
 324       break;
 325    default:
 326       assert(!"unknown sample count");
 327       *x = 0.5f;
 328       *y = 0.5f;
 329       return;
 330       break;
 331    }
 332
 333    *x = (float) pos[sample_index].x / 16.0f;
 334    *y = (float) pos[sample_index].y / 16.0f;
 335 }