src/gallium/drivers/i915/i915_state_emit.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * 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, sub license, 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 portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28
  29 #include "i915_reg.h"
  30 #include "i915_context.h"
  31 #include "i915_batch.h"
  32 #include "i915_debug.h"
  33 #include "i915_resource.h"
  34
  35 #include "pipe/p_context.h"
  36 #include "pipe/p_defines.h"
  37
  38 #include "util/u_math.h"
  39 #include "util/u_memory.h"
  40
  41 struct i915_tracked_hw_state {
  42    const char *name;
  43    void (*validate)(struct i915_context *, unsigned *batch_space);
  44    void (*emit)(struct i915_context *);
  45    unsigned dirty, batch_space;
  46 };
  47
  48
  49 static void
  50 validate_flush(struct i915_context *i915, unsigned *batch_space)
  51 {
  52    *batch_space = i915->flush_dirty ? 1 : 0;
  53 }
  54
  55 static void
  56 emit_flush(struct i915_context *i915)
  57 {
  58    /* Cache handling is very cheap atm. State handling can request to flushes:
  59     * - I915_FLUSH_CACHE which is a flush everything request and
  60     * - I915_PIPELINE_FLUSH which is specifically for the draw_offset flush.
  61     * Because the cache handling is so dumb, no explicit "invalidate map cache".
  62     * Also, the first is a strict superset of the latter, so the following logic
  63     * works. */
  64    if (i915->flush_dirty & I915_FLUSH_CACHE)
  65       OUT_BATCH(MI_FLUSH | FLUSH_MAP_CACHE);
  66    else if (i915->flush_dirty & I915_PIPELINE_FLUSH)
  67       OUT_BATCH(MI_FLUSH | INHIBIT_FLUSH_RENDER_CACHE);
  68 }
  69
  70 uint32_t invariant_state[] = {
  71    _3DSTATE_AA_CMD | AA_LINE_ECAAR_WIDTH_ENABLE | AA_LINE_ECAAR_WIDTH_1_0 |
  72              AA_LINE_REGION_WIDTH_ENABLE | AA_LINE_REGION_WIDTH_1_0,
  73
  74    _3DSTATE_DFLT_DIFFUSE_CMD, 0,
  75
  76    _3DSTATE_DFLT_SPEC_CMD, 0,
  77
  78    _3DSTATE_DFLT_Z_CMD, 0,
  79
  80    _3DSTATE_COORD_SET_BINDINGS |
  81              CSB_TCB(0, 0) |
  82              CSB_TCB(1, 1) |
  83              CSB_TCB(2, 2) |
  84              CSB_TCB(3, 3) |
  85              CSB_TCB(4, 4) |
  86              CSB_TCB(5, 5) |
  87              CSB_TCB(6, 6) |
  88              CSB_TCB(7, 7),
  89
  90    _3DSTATE_RASTER_RULES_CMD |
  91              ENABLE_POINT_RASTER_RULE |
  92              OGL_POINT_RASTER_RULE |
  93              ENABLE_LINE_STRIP_PROVOKE_VRTX |
  94              ENABLE_TRI_FAN_PROVOKE_VRTX |
  95              LINE_STRIP_PROVOKE_VRTX(1) |
  96              TRI_FAN_PROVOKE_VRTX(2) |
  97              ENABLE_TEXKILL_3D_4D |
  98              TEXKILL_4D,
  99
 100    _3DSTATE_DEPTH_SUBRECT_DISABLE,
 101
 102    /* disable indirect state for now
 103     */
 104    _3DSTATE_LOAD_INDIRECT | 0, 0};
 105
 106 static void
 107 emit_invariant(struct i915_context *i915)
 108 {
 109    i915_winsys_batchbuffer_write(i915->batch, invariant_state,
 110                                  Elements(invariant_state)*sizeof(uint32_t));
 111 }
 112
 113 static void
 114 validate_immediate(struct i915_context *i915, unsigned *batch_space)
 115 {
 116    unsigned dirty = (1 << I915_IMMEDIATE_S0 | 1 << I915_IMMEDIATE_S1 |
 117                      1 << I915_IMMEDIATE_S2 | 1 << I915_IMMEDIATE_S3 |
 118                      1 << I915_IMMEDIATE_S3 | 1 << I915_IMMEDIATE_S4 |
 119                      1 << I915_IMMEDIATE_S5 | 1 << I915_IMMEDIATE_S6) &
 120                     i915->immediate_dirty;
 121
 122    if (i915->immediate_dirty & (1 << I915_IMMEDIATE_S0) && i915->vbo)
 123       i915->validation_buffers[i915->num_validation_buffers++] = i915->vbo;
 124
 125    *batch_space = 1 + util_bitcount(dirty);
 126 }
 127
 128 static void
 129 emit_immediate(struct i915_context *i915)
 130 {
 131    /* remove unwatned bits and S7 */
 132    unsigned dirty = (1 << I915_IMMEDIATE_S0 | 1 << I915_IMMEDIATE_S1 |
 133                      1 << I915_IMMEDIATE_S2 | 1 << I915_IMMEDIATE_S3 |
 134                      1 << I915_IMMEDIATE_S3 | 1 << I915_IMMEDIATE_S4 |
 135                      1 << I915_IMMEDIATE_S5 | 1 << I915_IMMEDIATE_S6) &
 136                     i915->immediate_dirty;
 137    int i, num = util_bitcount(dirty);
 138    assert(num && num <= I915_MAX_IMMEDIATE);
 139
 140    OUT_BATCH(_3DSTATE_LOAD_STATE_IMMEDIATE_1 |
 141              dirty << 4 | (num - 1));
 142
 143    if (i915->immediate_dirty & (1 << I915_IMMEDIATE_S0)) {
 144       if (i915->vbo)
 145          OUT_RELOC(i915->vbo, I915_USAGE_VERTEX,
 146                    i915->current.immediate[I915_IMMEDIATE_S0]);
 147       else
 148          OUT_BATCH(0);
 149    }
 150
 151    for (i = 1; i < I915_MAX_IMMEDIATE; i++) {
 152       if (dirty & (1 << i))
 153          OUT_BATCH(i915->current.immediate[i]);
 154    }
 155 }
 156
 157 static void
 158 validate_dynamic(struct i915_context *i915, unsigned *batch_space)
 159 {
 160    *batch_space = util_bitcount(i915->dynamic_dirty & ((1 << I915_MAX_DYNAMIC) - 1));
 161 }
 162
 163 static void
 164 emit_dynamic(struct i915_context *i915)
 165 {
 166    int i;
 167    for (i = 0; i < I915_MAX_DYNAMIC; i++) {
 168       if (i915->dynamic_dirty & (1 << i))
 169          OUT_BATCH(i915->current.dynamic[i]);
 170    }
 171 }
 172
 173 static void
 174 validate_static(struct i915_context *i915, unsigned *batch_space)
 175 {
 176    *batch_space = 2 + 5; /* including DRAW_RECT */
 177
 178    if (i915->current.cbuf_bo) {
 179       i915->validation_buffers[i915->num_validation_buffers++]
 180          = i915->current.cbuf_bo;
 181       *batch_space += 3;
 182    }
 183
 184    if (i915->current.depth_bo) {
 185       i915->validation_buffers[i915->num_validation_buffers++]
 186          = i915->current.depth_bo;
 187       *batch_space += 3;
 188    }
 189 }
 190
 191 static void
 192 emit_static(struct i915_context *i915)
 193 {
 194    if (i915->current.cbuf_bo) {
 195       OUT_BATCH(_3DSTATE_BUF_INFO_CMD);
 196       OUT_BATCH(i915->current.cbuf_flags);
 197       OUT_RELOC(i915->current.cbuf_bo,
 198                 I915_USAGE_RENDER,
 199                 0);
 200    }
 201
 202    /* What happens if no zbuf??
 203     */
 204    if (i915->current.depth_bo) {
 205       OUT_BATCH(_3DSTATE_BUF_INFO_CMD);
 206       OUT_BATCH(i915->current.depth_flags);
 207       OUT_RELOC(i915->current.depth_bo,
 208                 I915_USAGE_RENDER,
 209                 0);
 210    }
 211
 212    {
 213       OUT_BATCH(_3DSTATE_DST_BUF_VARS_CMD);
 214       OUT_BATCH(i915->current.dst_buf_vars);
 215    }
 216 }
 217
 218 static void
 219 validate_map(struct i915_context *i915, unsigned *batch_space)
 220 {
 221    const uint enabled = i915->current.sampler_enable_flags;
 222    uint unit;
 223    struct i915_texture *tex;
 224
 225    *batch_space = i915->current.sampler_enable_nr ?
 226      2 + 3*i915->current.sampler_enable_nr : 0;
 227
 228    for (unit = 0; unit < I915_TEX_UNITS; unit++) {
 229       if (enabled & (1 << unit)) {
 230          tex = i915_texture(i915->fragment_sampler_views[unit]->texture);
 231          i915->validation_buffers[i915->num_validation_buffers++] = tex->buffer;
 232       }
 233    }
 234 }
 235
 236 static void
 237 emit_map(struct i915_context *i915)
 238 {
 239    const uint nr = i915->current.sampler_enable_nr;
 240    if (nr) {
 241       const uint enabled = i915->current.sampler_enable_flags;
 242       uint unit;
 243       uint count = 0;
 244       OUT_BATCH(_3DSTATE_MAP_STATE | (3 * nr));
 245       OUT_BATCH(enabled);
 246       for (unit = 0; unit < I915_TEX_UNITS; unit++) {
 247          if (enabled & (1 << unit)) {
 248             struct i915_texture *texture = i915_texture(i915->fragment_sampler_views[unit]->texture);
 249             struct i915_winsys_buffer *buf = texture->buffer;
 250             assert(buf);
 251
 252             count++;
 253
 254             OUT_RELOC(buf, I915_USAGE_SAMPLER, 0);
 255             OUT_BATCH(i915->current.texbuffer[unit][0]); /* MS3 */
 256             OUT_BATCH(i915->current.texbuffer[unit][1]); /* MS4 */
 257          }
 258       }
 259       assert(count == nr);
 260    }
 261 }
 262
 263 static void
 264 validate_sampler(struct i915_context *i915, unsigned *batch_space)
 265 {
 266    *batch_space = i915->current.sampler_enable_nr ?
 267      2 + 3*i915->current.sampler_enable_nr : 0;
 268 }
 269
 270 static void
 271 emit_sampler(struct i915_context *i915)
 272 {
 273    if (i915->current.sampler_enable_nr) {
 274       int i;
 275
 276       OUT_BATCH( _3DSTATE_SAMPLER_STATE |
 277                  (3 * i915->current.sampler_enable_nr) );
 278
 279       OUT_BATCH( i915->current.sampler_enable_flags );
 280
 281       for (i = 0; i < I915_TEX_UNITS; i++) {
 282          if (i915->current.sampler_enable_flags & (1<<i)) {
 283             OUT_BATCH( i915->current.sampler[i][0] );
 284             OUT_BATCH( i915->current.sampler[i][1] );
 285             OUT_BATCH( i915->current.sampler[i][2] );
 286          }
 287       }
 288    }
 289 }
 290
 291 static void
 292 validate_constants(struct i915_context *i915, unsigned *batch_space)
 293 {
 294    *batch_space = i915->fs->num_constants ?
 295       2 + 4*i915->fs->num_constants : 0;
 296 }
 297
 298 static void
 299 emit_constants(struct i915_context *i915)
 300 {
 301    /* Collate the user-defined constants with the fragment shader's
 302     * immediates according to the constant_flags[] array.
 303     */
 304    const uint nr = i915->fs->num_constants;
 305    if (nr) {
 306       uint i;
 307
 308       OUT_BATCH( _3DSTATE_PIXEL_SHADER_CONSTANTS | (nr * 4) );
 309       OUT_BATCH((1 << nr) - 1);
 310
 311       for (i = 0; i < nr; i++) {
 312          const uint *c;
 313          if (i915->fs->constant_flags[i] == I915_CONSTFLAG_USER) {
 314             /* grab user-defined constant */
 315             c = (uint *) i915_buffer(i915->constants[PIPE_SHADER_FRAGMENT])->data;
 316             c += 4 * i;
 317          }
 318          else {
 319             /* emit program constant */
 320             c = (uint *) i915->fs->constants[i];
 321          }
 322 #if 0 /* debug */
 323          {
 324             float *f = (float *) c;
 325             printf("Const %2d: %f %f %f %f %s\n", i, f[0], f[1], f[2], f[3],
 326                    (i915->fs->constant_flags[i] == I915_CONSTFLAG_USER
 327                     ? "user" : "immediate"));
 328          }
 329 #endif
 330          OUT_BATCH(*c++);
 331          OUT_BATCH(*c++);
 332          OUT_BATCH(*c++);
 333          OUT_BATCH(*c++);
 334       }
 335    }
 336 }
 337
 338 static void
 339 validate_program(struct i915_context *i915, unsigned *batch_space)
 340 {
 341    *batch_space = i915->fs->program_len;
 342 }
 343
 344 static void
 345 emit_program(struct i915_context *i915)
 346 {
 347       uint i;
 348       /* we should always have, at least, a pass-through program */
 349       assert(i915->fs->program_len > 0);
 350       for (i = 0; i < i915->fs->program_len; i++) {
 351          OUT_BATCH(i915->fs->program[i]);
 352       }
 353 }
 354
 355 static void
 356 emit_draw_rect(struct i915_context *i915)
 357 {
 358    OUT_BATCH(_3DSTATE_DRAW_RECT_CMD);
 359    OUT_BATCH(DRAW_RECT_DIS_DEPTH_OFS);
 360    OUT_BATCH(i915->current.draw_offset);
 361    OUT_BATCH(i915->current.draw_size);
 362    OUT_BATCH(i915->current.draw_offset);
 363 }
 364
 365 static boolean
 366 i915_validate_state(struct i915_context *i915, unsigned *batch_space)
 367 {
 368    unsigned tmp;
 369
 370    i915->num_validation_buffers = 0;
 371    if (i915->hardware_dirty & I915_HW_INVARIANT)
 372       *batch_space = Elements(invariant_state);
 373    else
 374       *batch_space = 0;
 375
 376 #define VALIDATE_ATOM(atom, hw_dirty) \
 377    if (i915->hardware_dirty & hw_dirty) { \
 378       validate_##atom(i915, &tmp); \
 379       *batch_space += tmp; }
 380    VALIDATE_ATOM(flush, I915_HW_FLUSH);
 381    VALIDATE_ATOM(immediate, I915_HW_IMMEDIATE);
 382    VALIDATE_ATOM(dynamic, I915_HW_DYNAMIC);
 383    VALIDATE_ATOM(static, I915_HW_STATIC);
 384    VALIDATE_ATOM(map, I915_HW_MAP);
 385    VALIDATE_ATOM(sampler, I915_HW_SAMPLER);
 386    VALIDATE_ATOM(constants, I915_HW_CONSTANTS);
 387    VALIDATE_ATOM(program, I915_HW_PROGRAM);
 388 #undef VALIDATE_ATOM
 389
 390    if (i915->num_validation_buffers == 0)
 391       return TRUE;
 392
 393    if (!i915_winsys_validate_buffers(i915->batch, i915->validation_buffers,
 394                                      i915->num_validation_buffers))
 395       return FALSE;
 396
 397    return TRUE;
 398 }
 399
 400 /* Push the state into the sarea and/or texture memory.
 401  */
 402 void
 403 i915_emit_hardware_state(struct i915_context *i915 )
 404 {
 405    unsigned batch_space;
 406    uintptr_t save_ptr;
 407
 408    if (I915_DBG_ON(DBG_ATOMS))
 409       i915_dump_hardware_dirty(i915, __FUNCTION__);
 410
 411    if (!i915_validate_state(i915, &batch_space)) {
 412       FLUSH_BATCH(NULL);
 413       assert(i915_validate_state(i915, &batch_space));
 414    }
 415
 416    if(!BEGIN_BATCH(batch_space)) {
 417       FLUSH_BATCH(NULL);
 418       assert(i915_validate_state(i915, &batch_space));
 419       assert(BEGIN_BATCH(batch_space));
 420    }
 421
 422    save_ptr = (uintptr_t)i915->batch->ptr;
 423
 424 #define EMIT_ATOM(atom, hw_dirty) \
 425    if (i915->hardware_dirty & hw_dirty) \
 426       emit_##atom(i915);
 427    EMIT_ATOM(flush, I915_HW_FLUSH);
 428    EMIT_ATOM(invariant, I915_HW_INVARIANT);
 429    EMIT_ATOM(immediate, I915_HW_IMMEDIATE);
 430    EMIT_ATOM(dynamic, I915_HW_DYNAMIC);
 431    EMIT_ATOM(static, I915_HW_STATIC);
 432    EMIT_ATOM(map, I915_HW_MAP);
 433    EMIT_ATOM(sampler, I915_HW_SAMPLER);
 434    EMIT_ATOM(constants, I915_HW_CONSTANTS);
 435    EMIT_ATOM(program, I915_HW_PROGRAM);
 436    EMIT_ATOM(draw_rect, I915_HW_STATIC);
 437 #undef EMIT_ATOM
 438
 439    I915_DBG(DBG_EMIT, "%s: used %d dwords, %d dwords reserved\n", __FUNCTION__,
 440             ((uintptr_t)i915->batch->ptr - save_ptr) / 4,
 441             batch_space);
 442    assert(((uintptr_t)i915->batch->ptr - save_ptr) / 4 == batch_space);
 443
 444    i915->hardware_dirty = 0;
 445    i915->immediate_dirty = 0;
 446    i915->dynamic_dirty = 0;
 447    i915->flush_dirty = 0;
 448 }