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_reg.h"
  33
  34 #include "pipe/p_context.h"
  35 #include "pipe/p_defines.h"
  36
  37 static unsigned translate_format( enum pipe_format format )
  38 {
  39    switch (format) {
  40    case PIPE_FORMAT_B8G8R8A8_UNORM:
  41       return COLOR_BUF_ARGB8888;
  42    case PIPE_FORMAT_B5G6R5_UNORM:
  43       return COLOR_BUF_RGB565;
  44    default:
  45       assert(0);
  46       return 0;
  47    }
  48 }
  49
  50 static unsigned translate_depth_format( enum pipe_format zformat )
  51 {
  52    switch (zformat) {
  53    case PIPE_FORMAT_Z24_UNORM_S8_USCALED:
  54       return DEPTH_FRMT_24_FIXED_8_OTHER;
  55    case PIPE_FORMAT_Z16_UNORM:
  56       return DEPTH_FRMT_16_FIXED;
  57    default:
  58       assert(0);
  59       return 0;
  60    }
  61 }
  62
  63
  64 /**
  65  * Examine framebuffer state to determine width, height.
  66  */
  67 static boolean
  68 framebuffer_size(const struct pipe_framebuffer_state *fb,
  69                  uint *width, uint *height)
  70 {
  71    if (fb->cbufs[0]) {
  72       *width = fb->cbufs[0]->width;
  73       *height = fb->cbufs[0]->height;
  74       return TRUE;
  75    }
  76    else if (fb->zsbuf) {
  77       *width = fb->zsbuf->width;
  78       *height = fb->zsbuf->height;
  79       return TRUE;
  80    }
  81    else {
  82       *width = *height = 0;
  83       return FALSE;
  84    }
  85 }
  86
  87
  88 /* Push the state into the sarea and/or texture memory.
  89  */
  90 void
  91 i915_emit_hardware_state(struct i915_context *i915 )
  92 {
  93    /* XXX: there must be an easier way */
  94    const unsigned dwords = ( 14 +
  95                              7 +
  96                              I915_MAX_DYNAMIC +
  97                              8 +
  98                              2 + I915_TEX_UNITS*3 +
  99                              2 + I915_TEX_UNITS*3 +
 100                              2 + I915_MAX_CONSTANT*4 +
 101 #if 0
 102                              i915->current.program_len +
 103 #else
 104                              i915->fs->program_len +
 105 #endif
 106                              6
 107                            ) * 3/2; /* plus 50% margin */
 108    const unsigned relocs = ( I915_TEX_UNITS +
 109                              3
 110                            ) * 3/2; /* plus 50% margin */
 111
 112 #if 0
 113    debug_printf("i915_emit_hardware_state: %d dwords, %d relocs\n", dwords, relocs);
 114 #endif
 115
 116    if(!BEGIN_BATCH(dwords, relocs)) {
 117       FLUSH_BATCH(NULL);
 118       assert(BEGIN_BATCH(dwords, relocs));
 119    }
 120
 121    /* 14 dwords, 0 relocs */
 122    if (i915->hardware_dirty & I915_HW_INVARIENT)
 123    {
 124       OUT_BATCH(_3DSTATE_AA_CMD |
 125                 AA_LINE_ECAAR_WIDTH_ENABLE |
 126                 AA_LINE_ECAAR_WIDTH_1_0 |
 127                 AA_LINE_REGION_WIDTH_ENABLE | AA_LINE_REGION_WIDTH_1_0);
 128
 129       OUT_BATCH(_3DSTATE_DFLT_DIFFUSE_CMD);
 130       OUT_BATCH(0);
 131
 132       OUT_BATCH(_3DSTATE_DFLT_SPEC_CMD);
 133       OUT_BATCH(0);
 134
 135       OUT_BATCH(_3DSTATE_DFLT_Z_CMD);
 136       OUT_BATCH(0);
 137
 138       OUT_BATCH(_3DSTATE_COORD_SET_BINDINGS |
 139                 CSB_TCB(0, 0) |
 140                 CSB_TCB(1, 1) |
 141                 CSB_TCB(2, 2) |
 142                 CSB_TCB(3, 3) |
 143                 CSB_TCB(4, 4) |
 144                 CSB_TCB(5, 5) |
 145                 CSB_TCB(6, 6) |
 146                 CSB_TCB(7, 7));
 147
 148       OUT_BATCH(_3DSTATE_RASTER_RULES_CMD |
 149                 ENABLE_POINT_RASTER_RULE |
 150                 OGL_POINT_RASTER_RULE |
 151                 ENABLE_LINE_STRIP_PROVOKE_VRTX |
 152                 ENABLE_TRI_FAN_PROVOKE_VRTX |
 153                 LINE_STRIP_PROVOKE_VRTX(1) |
 154                 TRI_FAN_PROVOKE_VRTX(2) |
 155                 ENABLE_TEXKILL_3D_4D |
 156                 TEXKILL_4D);
 157
 158       /* Need to initialize this to zero.
 159        */
 160       OUT_BATCH(_3DSTATE_LOAD_STATE_IMMEDIATE_1 | I1_LOAD_S(3) | (0));
 161       OUT_BATCH(0);
 162
 163       OUT_BATCH(_3DSTATE_DEPTH_SUBRECT_DISABLE);
 164
 165       /* disable indirect state for now
 166        */
 167       OUT_BATCH(_3DSTATE_LOAD_INDIRECT | 0);
 168       OUT_BATCH(0);
 169    }
 170
 171    /* 7 dwords, 1 relocs */
 172    if (i915->hardware_dirty & I915_HW_IMMEDIATE)
 173    {
 174       OUT_BATCH(_3DSTATE_LOAD_STATE_IMMEDIATE_1 |
 175                 I1_LOAD_S(0) |
 176                 I1_LOAD_S(1) |
 177                 I1_LOAD_S(2) |
 178                 I1_LOAD_S(4) |
 179                 I1_LOAD_S(5) |
 180                 I1_LOAD_S(6) |
 181                 (5));
 182
 183       if(i915->vbo)
 184          OUT_RELOC(i915->vbo,
 185                    I915_USAGE_VERTEX,
 186                    i915->current.immediate[I915_IMMEDIATE_S0]);
 187       else
 188          /* FIXME: we should not do this */
 189          OUT_BATCH(0);
 190       OUT_BATCH(i915->current.immediate[I915_IMMEDIATE_S1]);
 191       OUT_BATCH(i915->current.immediate[I915_IMMEDIATE_S2]);
 192       OUT_BATCH(i915->current.immediate[I915_IMMEDIATE_S4]);
 193       OUT_BATCH(i915->current.immediate[I915_IMMEDIATE_S5]);
 194       OUT_BATCH(i915->current.immediate[I915_IMMEDIATE_S6]);
 195    }
 196
 197    /* I915_MAX_DYNAMIC dwords, 0 relocs */
 198    if (i915->hardware_dirty & I915_HW_DYNAMIC)
 199    {
 200       int i;
 201       for (i = 0; i < I915_MAX_DYNAMIC; i++) {
 202          OUT_BATCH(i915->current.dynamic[i]);
 203       }
 204    }
 205
 206    /* 8 dwords, 2 relocs */
 207    if (i915->hardware_dirty & I915_HW_STATIC)
 208    {
 209       struct pipe_surface *cbuf_surface = i915->framebuffer.cbufs[0];
 210       struct pipe_surface *depth_surface = i915->framebuffer.zsbuf;
 211
 212       if (cbuf_surface) {
 213          unsigned ctile = BUF_3D_USE_FENCE;
 214          struct i915_texture *tex = (struct i915_texture *)
 215                                     cbuf_surface->texture;
 216          assert(tex);
 217
 218          if (tex && tex->sw_tiled) {
 219             ctile = BUF_3D_TILED_SURFACE;
 220          }
 221
 222          OUT_BATCH(_3DSTATE_BUF_INFO_CMD);
 223
 224          OUT_BATCH(BUF_3D_ID_COLOR_BACK |
 225                    BUF_3D_PITCH(tex->stride) |  /* pitch in bytes */
 226                    ctile);
 227
 228          OUT_RELOC(tex->buffer,
 229                    I915_USAGE_RENDER,
 230                    cbuf_surface->offset);
 231       }
 232
 233       /* What happens if no zbuf??
 234        */
 235       if (depth_surface) {
 236          unsigned ztile = BUF_3D_USE_FENCE;
 237          struct i915_texture *tex = (struct i915_texture *)
 238                                     depth_surface->texture;
 239          assert(tex);
 240
 241          if (tex && tex->sw_tiled) {
 242             ztile = BUF_3D_TILED_SURFACE;
 243          }
 244
 245          OUT_BATCH(_3DSTATE_BUF_INFO_CMD);
 246
 247          assert(tex);
 248          OUT_BATCH(BUF_3D_ID_DEPTH |
 249                    BUF_3D_PITCH(tex->stride) |  /* pitch in bytes */
 250                    ztile);
 251
 252          OUT_RELOC(tex->buffer,
 253                    I915_USAGE_RENDER,
 254                    depth_surface->offset);
 255       }
 256
 257       {
 258          unsigned cformat, zformat = 0;
 259
 260          if (cbuf_surface)
 261             cformat = cbuf_surface->format;
 262          else
 263             cformat = PIPE_FORMAT_B8G8R8A8_UNORM; /* arbitrary */
 264          cformat = translate_format(cformat);
 265
 266          if (depth_surface)
 267             zformat = translate_depth_format( i915->framebuffer.zsbuf->format );
 268
 269          OUT_BATCH(_3DSTATE_DST_BUF_VARS_CMD);
 270          OUT_BATCH(DSTORG_HORT_BIAS(0x8) | /* .5 */
 271                    DSTORG_VERT_BIAS(0x8) | /* .5 */
 272                    LOD_PRECLAMP_OGL |
 273                    TEX_DEFAULT_COLOR_OGL |
 274                    cformat |
 275                    zformat );
 276       }
 277    }
 278
 279 #if 01
 280       /* texture images */
 281       /* 2 + I915_TEX_UNITS*3 dwords, I915_TEX_UNITS relocs */
 282       if (i915->hardware_dirty & (I915_HW_MAP | I915_HW_SAMPLER))
 283       {
 284          const uint nr = i915->current.sampler_enable_nr;
 285          if (nr) {
 286             const uint enabled = i915->current.sampler_enable_flags;
 287             uint unit;
 288             uint count = 0;
 289             OUT_BATCH(_3DSTATE_MAP_STATE | (3 * nr));
 290             OUT_BATCH(enabled);
 291             for (unit = 0; unit < I915_TEX_UNITS; unit++) {
 292                if (enabled & (1 << unit)) {
 293                   struct i915_texture *texture = (struct i915_texture *)i915->fragment_sampler_views[unit]->texture;
 294                   struct i915_winsys_buffer *buf = texture->buffer;
 295                   uint offset = 0;
 296                   assert(buf);
 297
 298                   count++;
 299
 300                   OUT_RELOC(buf, I915_USAGE_SAMPLER, offset);
 301                   OUT_BATCH(i915->current.texbuffer[unit][0]); /* MS3 */
 302                   OUT_BATCH(i915->current.texbuffer[unit][1]); /* MS4 */
 303                }
 304             }
 305             assert(count == nr);
 306          }
 307       }
 308 #endif
 309
 310 #if 01
 311    /* samplers */
 312    /* 2 + I915_TEX_UNITS*3 dwords, 0 relocs */
 313    if (i915->hardware_dirty & I915_HW_SAMPLER)
 314    {
 315       if (i915->current.sampler_enable_nr) {
 316          int i;
 317
 318          OUT_BATCH( _3DSTATE_SAMPLER_STATE |
 319                     (3 * i915->current.sampler_enable_nr) );
 320
 321          OUT_BATCH( i915->current.sampler_enable_flags );
 322
 323          for (i = 0; i < I915_TEX_UNITS; i++) {
 324             if (i915->current.sampler_enable_flags & (1<<i)) {
 325                OUT_BATCH( i915->current.sampler[i][0] );
 326                OUT_BATCH( i915->current.sampler[i][1] );
 327                OUT_BATCH( i915->current.sampler[i][2] );
 328             }
 329          }
 330       }
 331    }
 332 #endif
 333
 334    /* constants */
 335    /* 2 + I915_MAX_CONSTANT*4 dwords, 0 relocs */
 336    if (i915->hardware_dirty & I915_HW_PROGRAM)
 337    {
 338       /* Collate the user-defined constants with the fragment shader's
 339        * immediates according to the constant_flags[] array.
 340        */
 341       const uint nr = i915->fs->num_constants;
 342       if (nr) {
 343          uint i;
 344
 345          OUT_BATCH( _3DSTATE_PIXEL_SHADER_CONSTANTS | (nr * 4) );
 346          OUT_BATCH( (1 << (nr - 1)) | ((1 << (nr - 1)) - 1) );
 347
 348          for (i = 0; i < nr; i++) {
 349             const uint *c;
 350             if (i915->fs->constant_flags[i] == I915_CONSTFLAG_USER) {
 351                /* grab user-defined constant */
 352                c = (uint *) i915->current.constants[PIPE_SHADER_FRAGMENT][i];
 353             }
 354             else {
 355                /* emit program constant */
 356                c = (uint *) i915->fs->constants[i];
 357             }
 358 #if 0 /* debug */
 359             {
 360                float *f = (float *) c;
 361                printf("Const %2d: %f %f %f %f %s\n", i, f[0], f[1], f[2], f[3],
 362                       (i915->fs->constant_flags[i] == I915_CONSTFLAG_USER
 363                        ? "user" : "immediate"));
 364             }
 365 #endif
 366             OUT_BATCH(*c++);
 367             OUT_BATCH(*c++);
 368             OUT_BATCH(*c++);
 369             OUT_BATCH(*c++);
 370          }
 371       }
 372    }
 373
 374    /* Fragment program */
 375    /* i915->current.program_len dwords, 0 relocs */
 376    if (i915->hardware_dirty & I915_HW_PROGRAM)
 377    {
 378       uint i;
 379       /* we should always have, at least, a pass-through program */
 380       assert(i915->fs->program_len > 0);
 381       for (i = 0; i < i915->fs->program_len; i++) {
 382          OUT_BATCH(i915->fs->program[i]);
 383       }
 384    }
 385
 386    /* drawing surface size */
 387    /* 6 dwords, 0 relocs */
 388    {
 389       uint w, h;
 390       boolean k = framebuffer_size(&i915->framebuffer, &w, &h);
 391       (void)k;
 392       assert(k);
 393
 394       OUT_BATCH(_3DSTATE_DRAW_RECT_CMD);
 395       OUT_BATCH(0);
 396       OUT_BATCH(0);
 397       OUT_BATCH(((w - 1) & 0xffff) | ((h - 1) << 16));
 398       OUT_BATCH(0);
 399       OUT_BATCH(0);
 400    }
 401
 402
 403    i915->hardware_dirty = 0;
 404 }