src/gallium/drivers/i915simple/i915_state.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 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 /* Authors:  Keith Whitwell <keith@tungstengraphics.com>
  29  */
  30
  31
  32 #include "draw/draw_context.h"
  33 #include "pipe/p_winsys.h"
  34 #include "pipe/p_util.h"
  35
  36 #include "i915_context.h"
  37 #include "i915_reg.h"
  38 #include "i915_state.h"
  39 #include "i915_state_inlines.h"
  40
  41
  42 /* The i915 (and related graphics cores) do not support GL_CLAMP.  The
  43  * Intel drivers for "other operating systems" implement GL_CLAMP as
  44  * GL_CLAMP_TO_EDGE, so the same is done here.
  45  */
  46 static unsigned
  47 translate_wrap_mode(unsigned wrap)
  48 {
  49    switch (wrap) {
  50    case PIPE_TEX_WRAP_REPEAT:
  51       return TEXCOORDMODE_WRAP;
  52    case PIPE_TEX_WRAP_CLAMP:
  53       return TEXCOORDMODE_CLAMP_EDGE;   /* not quite correct */
  54    case PIPE_TEX_WRAP_CLAMP_TO_EDGE:
  55       return TEXCOORDMODE_CLAMP_EDGE;
  56    case PIPE_TEX_WRAP_CLAMP_TO_BORDER:
  57       return TEXCOORDMODE_CLAMP_BORDER;
  58 //   case PIPE_TEX_WRAP_MIRRORED_REPEAT:
  59 //      return TEXCOORDMODE_MIRROR;
  60    default:
  61       return TEXCOORDMODE_WRAP;
  62    }
  63 }
  64
  65 static unsigned translate_img_filter( unsigned filter )
  66 {
  67    switch (filter) {
  68    case PIPE_TEX_FILTER_NEAREST:
  69       return FILTER_NEAREST;
  70    case PIPE_TEX_FILTER_LINEAR:
  71       return FILTER_LINEAR;
  72    default:
  73       assert(0);
  74       return FILTER_NEAREST;
  75    }
  76 }
  77
  78 static unsigned translate_mip_filter( unsigned filter )
  79 {
  80    switch (filter) {
  81    case PIPE_TEX_MIPFILTER_NONE:
  82       return MIPFILTER_NONE;
  83    case PIPE_TEX_MIPFILTER_NEAREST:
  84       return MIPFILTER_NEAREST;
  85    case PIPE_TEX_FILTER_LINEAR:
  86       return MIPFILTER_LINEAR;
  87    default:
  88       assert(0);
  89       return MIPFILTER_NONE;
  90    }
  91 }
  92
  93
  94 /* None of this state is actually used for anything yet.
  95  */
  96 static void *
  97 i915_create_blend_state(struct pipe_context *pipe,
  98                         const struct pipe_blend_state *blend)
  99 {
 100    struct i915_blend_state *cso_data = CALLOC_STRUCT( i915_blend_state );
 101
 102    {
 103       unsigned eqRGB  = blend->rgb_func;
 104       unsigned srcRGB = blend->rgb_src_factor;
 105       unsigned dstRGB = blend->rgb_dst_factor;
 106
 107       unsigned eqA    = blend->alpha_func;
 108       unsigned srcA   = blend->alpha_src_factor;
 109       unsigned dstA   = blend->alpha_dst_factor;
 110
 111       /* Special handling for MIN/MAX filter modes handled at
 112        * state_tracker level.
 113        */
 114
 115       if (srcA != srcRGB ||
 116           dstA != dstRGB ||
 117           eqA != eqRGB) {
 118
 119          cso_data->iab = (_3DSTATE_INDEPENDENT_ALPHA_BLEND_CMD |
 120                           IAB_MODIFY_ENABLE |
 121                           IAB_ENABLE |
 122                           IAB_MODIFY_FUNC |
 123                           IAB_MODIFY_SRC_FACTOR |
 124                           IAB_MODIFY_DST_FACTOR |
 125                           SRC_ABLND_FACT(i915_translate_blend_factor(srcA)) |
 126                           DST_ABLND_FACT(i915_translate_blend_factor(dstA)) |
 127                           (i915_translate_blend_func(eqA) << IAB_FUNC_SHIFT));
 128       }
 129       else {
 130          cso_data->iab = (_3DSTATE_INDEPENDENT_ALPHA_BLEND_CMD |
 131                           IAB_MODIFY_ENABLE |
 132                           0);
 133       }
 134    }
 135
 136    cso_data->modes4 |= (_3DSTATE_MODES_4_CMD |
 137                         ENABLE_LOGIC_OP_FUNC |
 138                         LOGIC_OP_FUNC(i915_translate_logic_op(blend->logicop_func)));
 139
 140    if (blend->logicop_enable)
 141       cso_data->LIS5 |= S5_LOGICOP_ENABLE;
 142
 143    if (blend->dither)
 144       cso_data->LIS5 |= S5_COLOR_DITHER_ENABLE;
 145
 146    if ((blend->colormask & PIPE_MASK_R) == 0)
 147       cso_data->LIS5 |= S5_WRITEDISABLE_RED;
 148
 149    if ((blend->colormask & PIPE_MASK_G) == 0)
 150       cso_data->LIS5 |= S5_WRITEDISABLE_GREEN;
 151
 152    if ((blend->colormask & PIPE_MASK_B) == 0)
 153       cso_data->LIS5 |= S5_WRITEDISABLE_BLUE;
 154
 155    if ((blend->colormask & PIPE_MASK_A) == 0)
 156       cso_data->LIS5 |= S5_WRITEDISABLE_ALPHA;
 157
 158    if (blend->blend_enable) {
 159       unsigned funcRGB = blend->rgb_func;
 160       unsigned srcRGB  = blend->rgb_src_factor;
 161       unsigned dstRGB  = blend->rgb_dst_factor;
 162
 163       cso_data->LIS6 |= (S6_CBUF_BLEND_ENABLE |
 164                          SRC_BLND_FACT(i915_translate_blend_factor(srcRGB)) |
 165                          DST_BLND_FACT(i915_translate_blend_factor(dstRGB)) |
 166                          (i915_translate_blend_func(funcRGB) << S6_CBUF_BLEND_FUNC_SHIFT));
 167    }
 168
 169    return cso_data;
 170 }
 171
 172 static void i915_bind_blend_state(struct pipe_context *pipe,
 173                                   void *blend)
 174 {
 175    struct i915_context *i915 = i915_context(pipe);
 176
 177    i915->blend = (struct i915_blend_state*)blend;
 178
 179    i915->dirty |= I915_NEW_BLEND;
 180 }
 181
 182
 183 static void i915_delete_blend_state(struct pipe_context *pipe, void *blend)
 184 {
 185    FREE(blend);
 186 }
 187
 188 static void i915_set_blend_color( struct pipe_context *pipe,
 189                              const struct pipe_blend_color *blend_color )
 190 {
 191    struct i915_context *i915 = i915_context(pipe);
 192
 193    i915->blend_color = *blend_color;
 194
 195    i915->dirty |= I915_NEW_BLEND;
 196 }
 197
 198 static void *
 199 i915_create_sampler_state(struct pipe_context *pipe,
 200                           const struct pipe_sampler_state *sampler)
 201 {
 202    struct i915_sampler_state *cso = CALLOC_STRUCT( i915_sampler_state );
 203    const unsigned ws = sampler->wrap_s;
 204    const unsigned wt = sampler->wrap_t;
 205    const unsigned wr = sampler->wrap_r;
 206    unsigned minFilt, magFilt;
 207    unsigned mipFilt;
 208
 209    cso->templ = sampler;
 210
 211    mipFilt = translate_mip_filter(sampler->min_mip_filter);
 212    if (sampler->max_anisotropy > 1.0) {
 213       minFilt = FILTER_ANISOTROPIC;
 214       magFilt = FILTER_ANISOTROPIC;
 215       if (sampler->max_anisotropy > 2.0) {
 216          cso->state[0] |= SS2_MAX_ANISO_4;
 217       }
 218    }
 219    else {
 220       minFilt = translate_img_filter( sampler->min_img_filter );
 221       magFilt = translate_img_filter( sampler->mag_img_filter );
 222    }
 223
 224    {
 225       int b = (int) (sampler->lod_bias * 16.0);
 226       b = CLAMP(b, -256, 255);
 227       cso->state[0] |= ((b << SS2_LOD_BIAS_SHIFT) & SS2_LOD_BIAS_MASK);
 228    }
 229
 230    /* Shadow:
 231     */
 232    if (sampler->compare_mode == PIPE_TEX_COMPARE_R_TO_TEXTURE)
 233    {
 234       cso->state[0] |= (SS2_SHADOW_ENABLE |
 235                         i915_translate_compare_func(sampler->compare_func));
 236
 237       minFilt = FILTER_4X4_FLAT;
 238       magFilt = FILTER_4X4_FLAT;
 239    }
 240
 241    cso->state[0] |= ((minFilt << SS2_MIN_FILTER_SHIFT) |
 242                      (mipFilt << SS2_MIP_FILTER_SHIFT) |
 243                      (magFilt << SS2_MAG_FILTER_SHIFT));
 244
 245    cso->state[1] |=
 246       ((translate_wrap_mode(ws) << SS3_TCX_ADDR_MODE_SHIFT) |
 247        (translate_wrap_mode(wt) << SS3_TCY_ADDR_MODE_SHIFT) |
 248        (translate_wrap_mode(wr) << SS3_TCZ_ADDR_MODE_SHIFT));
 249
 250    if (sampler->normalized_coords)
 251       cso->state[1] |= SS3_NORMALIZED_COORDS;
 252
 253    if (0) /* XXX not tested yet */
 254    {
 255       int minlod = (int) (16.0 * sampler->min_lod);
 256       minlod = CLAMP(minlod, 0, 16 * 11);
 257       cso->state[1] |= (minlod << SS3_MIN_LOD_SHIFT);
 258    }
 259
 260    {
 261       ubyte r = float_to_ubyte(sampler->border_color[0]);
 262       ubyte g = float_to_ubyte(sampler->border_color[1]);
 263       ubyte b = float_to_ubyte(sampler->border_color[2]);
 264       ubyte a = float_to_ubyte(sampler->border_color[3]);
 265       cso->state[2] = I915PACKCOLOR8888(r, g, b, a);
 266    }
 267    return cso;
 268 }
 269
 270 static void i915_bind_sampler_state(struct pipe_context *pipe,
 271                                     unsigned unit, void *sampler)
 272 {
 273    struct i915_context *i915 = i915_context(pipe);
 274
 275    assert(unit < PIPE_MAX_SAMPLERS);
 276    i915->sampler[unit] = (const struct i915_sampler_state*)sampler;
 277
 278    i915->dirty |= I915_NEW_SAMPLER;
 279 }
 280
 281 static void i915_delete_sampler_state(struct pipe_context *pipe,
 282                                       void *sampler)
 283 {
 284    FREE(sampler);
 285 }
 286
 287
 288 /** XXX move someday?  Or consolidate all these simple state setters
 289  * into one file.
 290  */
 291
 292 static void *
 293 i915_create_depth_stencil_state(struct pipe_context *pipe,
 294                                 const struct pipe_depth_stencil_alpha_state *depth_stencil)
 295 {
 296    struct i915_depth_stencil_state *cso = CALLOC_STRUCT( i915_depth_stencil_state );
 297
 298    {
 299       int testmask = depth_stencil->stencil[0].value_mask & 0xff;
 300       int writemask = depth_stencil->stencil[0].write_mask & 0xff;
 301
 302       cso->stencil_modes4 |= (_3DSTATE_MODES_4_CMD |
 303                               ENABLE_STENCIL_TEST_MASK |
 304                               STENCIL_TEST_MASK(testmask) |
 305                               ENABLE_STENCIL_WRITE_MASK |
 306                               STENCIL_WRITE_MASK(writemask));
 307    }
 308
 309    if (depth_stencil->stencil[0].enabled) {
 310       int test = i915_translate_compare_func(depth_stencil->stencil[0].func);
 311       int fop  = i915_translate_stencil_op(depth_stencil->stencil[0].fail_op);
 312       int dfop = i915_translate_stencil_op(depth_stencil->stencil[0].zfail_op);
 313       int dpop = i915_translate_stencil_op(depth_stencil->stencil[0].zpass_op);
 314       int ref  = depth_stencil->stencil[0].ref_value & 0xff;
 315
 316       cso->stencil_LIS5 |= (S5_STENCIL_TEST_ENABLE |
 317                             S5_STENCIL_WRITE_ENABLE |
 318                             (ref  << S5_STENCIL_REF_SHIFT) |
 319                             (test << S5_STENCIL_TEST_FUNC_SHIFT) |
 320                             (fop  << S5_STENCIL_FAIL_SHIFT) |
 321                             (dfop << S5_STENCIL_PASS_Z_FAIL_SHIFT) |
 322                             (dpop << S5_STENCIL_PASS_Z_PASS_SHIFT));
 323    }
 324
 325    if (depth_stencil->stencil[1].enabled) {
 326       int test  = i915_translate_compare_func(depth_stencil->stencil[1].func);
 327       int fop   = i915_translate_stencil_op(depth_stencil->stencil[1].fail_op);
 328       int dfop  = i915_translate_stencil_op(depth_stencil->stencil[1].zfail_op);
 329       int dpop  = i915_translate_stencil_op(depth_stencil->stencil[1].zpass_op);
 330       int ref   = depth_stencil->stencil[1].ref_value & 0xff;
 331       int tmask = depth_stencil->stencil[1].value_mask & 0xff;
 332       int wmask = depth_stencil->stencil[1].write_mask & 0xff;
 333
 334       cso->bfo[0] = (_3DSTATE_BACKFACE_STENCIL_OPS |
 335                      BFO_ENABLE_STENCIL_FUNCS |
 336                      BFO_ENABLE_STENCIL_TWO_SIDE |
 337                      BFO_ENABLE_STENCIL_REF |
 338                      BFO_STENCIL_TWO_SIDE |
 339                      (ref  << BFO_STENCIL_REF_SHIFT) |
 340                      (test << BFO_STENCIL_TEST_SHIFT) |
 341                      (fop  << BFO_STENCIL_FAIL_SHIFT) |
 342                      (dfop << BFO_STENCIL_PASS_Z_FAIL_SHIFT) |
 343                      (dpop << BFO_STENCIL_PASS_Z_PASS_SHIFT));
 344
 345       cso->bfo[1] = (_3DSTATE_BACKFACE_STENCIL_MASKS |
 346                      BFM_ENABLE_STENCIL_TEST_MASK |
 347                      BFM_ENABLE_STENCIL_WRITE_MASK |
 348                      (tmask << BFM_STENCIL_TEST_MASK_SHIFT) |
 349                      (wmask << BFM_STENCIL_WRITE_MASK_SHIFT));
 350    }
 351    else {
 352       /* This actually disables two-side stencil: The bit set is a
 353        * modify-enable bit to indicate we are changing the two-side
 354        * setting.  Then there is a symbolic zero to show that we are
 355        * setting the flag to zero/off.
 356        */
 357       cso->bfo[0] = (_3DSTATE_BACKFACE_STENCIL_OPS |
 358                      BFO_ENABLE_STENCIL_TWO_SIDE |
 359                      0);
 360       cso->bfo[1] = 0;
 361    }
 362
 363    if (depth_stencil->depth.enabled) {
 364       int func = i915_translate_compare_func(depth_stencil->depth.func);
 365
 366       cso->depth_LIS6 |= (S6_DEPTH_TEST_ENABLE |
 367                           (func << S6_DEPTH_TEST_FUNC_SHIFT));
 368
 369       if (depth_stencil->depth.writemask)
 370          cso->depth_LIS6 |= S6_DEPTH_WRITE_ENABLE;
 371    }
 372
 373    if (depth_stencil->alpha.enabled) {
 374       int test = i915_translate_compare_func(depth_stencil->alpha.func);
 375       ubyte refByte = float_to_ubyte(depth_stencil->alpha.ref);
 376
 377       cso->depth_LIS6 |= (S6_ALPHA_TEST_ENABLE |
 378                           (test << S6_ALPHA_TEST_FUNC_SHIFT) |
 379                           (((unsigned) refByte) << S6_ALPHA_REF_SHIFT));
 380    }
 381
 382    return cso;
 383 }
 384
 385 static void i915_bind_depth_stencil_state(struct pipe_context *pipe,
 386                                           void *depth_stencil)
 387 {
 388    struct i915_context *i915 = i915_context(pipe);
 389
 390    i915->depth_stencil = (const struct i915_depth_stencil_state *)depth_stencil;
 391
 392    i915->dirty |= I915_NEW_DEPTH_STENCIL;
 393 }
 394
 395 static void i915_delete_depth_stencil_state(struct pipe_context *pipe,
 396                                             void *depth_stencil)
 397 {
 398    FREE(depth_stencil);
 399 }
 400
 401
 402 static void i915_set_scissor_state( struct pipe_context *pipe,
 403                                  const struct pipe_scissor_state *scissor )
 404 {
 405    struct i915_context *i915 = i915_context(pipe);
 406
 407    memcpy( &i915->scissor, scissor, sizeof(*scissor) );
 408    i915->dirty |= I915_NEW_SCISSOR;
 409 }
 410
 411
 412 static void i915_set_polygon_stipple( struct pipe_context *pipe,
 413                                    const struct pipe_poly_stipple *stipple )
 414 {
 415 }
 416
 417
 418 static void * i915_create_fs_state(struct pipe_context *pipe,
 419                                    const struct pipe_shader_state *templ)
 420 {
 421    return 0;
 422 }
 423
 424 static void i915_bind_fs_state(struct pipe_context *pipe, void *fs)
 425 {
 426    struct i915_context *i915 = i915_context(pipe);
 427
 428    i915->fs = (struct pipe_shader_state *)fs;
 429
 430    i915->dirty |= I915_NEW_FS;
 431 }
 432
 433 static void i915_delete_fs_state(struct pipe_context *pipe, void *shader)
 434 {
 435    /*do nothing*/
 436 }
 437
 438 static void *
 439 i915_create_vs_state(struct pipe_context *pipe,
 440                      const struct pipe_shader_state *templ)
 441 {
 442    struct i915_context *i915 = i915_context(pipe);
 443
 444    /* just pass-through to draw module */
 445    return draw_create_vertex_shader(i915->draw, templ);
 446 }
 447
 448 static void i915_bind_vs_state(struct pipe_context *pipe, void *shader)
 449 {
 450    struct i915_context *i915 = i915_context(pipe);
 451
 452    /* just pass-through to draw module */
 453    draw_bind_vertex_shader(i915->draw, (struct draw_vertex_shader *) shader);
 454 }
 455
 456 static void i915_delete_vs_state(struct pipe_context *pipe, void *shader)
 457 {
 458    struct i915_context *i915 = i915_context(pipe);
 459
 460    /* just pass-through to draw module */
 461    draw_delete_vertex_shader(i915->draw, (struct draw_vertex_shader *) shader);
 462 }
 463
 464 static void i915_set_constant_buffer(struct pipe_context *pipe,
 465                                      uint shader, uint index,
 466                                      const struct pipe_constant_buffer *buf)
 467 {
 468    struct i915_context *i915 = i915_context(pipe);
 469    struct pipe_winsys *ws = pipe->winsys;
 470
 471    assert(shader < PIPE_SHADER_TYPES);
 472    assert(index == 0);
 473
 474    /* Make a copy of shader constants.
 475     * During fragment program translation we may add additional
 476     * constants to the array.
 477     *
 478     * We want to consider the situation where some user constants
 479     * (ex: a material color) may change frequently but the shader program
 480     * stays the same.  In that case we should only be updating the first
 481     * N constants, leaving any extras from shader translation alone.
 482     */
 483    {
 484       void *mapped;
 485       if (buf->size &&
 486           (mapped = ws->buffer_map(ws, buf->buffer,
 487                                    PIPE_BUFFER_USAGE_CPU_READ))) {
 488          memcpy(i915->current.constants[shader], mapped, buf->size);
 489          ws->buffer_unmap(ws, buf->buffer);
 490          i915->current.num_user_constants[shader]
 491             = buf->size / (4 * sizeof(float));
 492       }
 493       else {
 494          i915->current.num_user_constants[shader] = 0;
 495       }
 496    }
 497
 498    i915->dirty |= I915_NEW_CONSTANTS;
 499 }
 500
 501
 502 static void i915_set_sampler_texture(struct pipe_context *pipe,
 503                                      unsigned sampler,
 504                                      struct pipe_texture *texture)
 505 {
 506    struct i915_context *i915 = i915_context(pipe);
 507
 508    i915->texture[sampler] = (struct i915_texture*)texture;  /* ptr, not struct */
 509
 510    i915->dirty |= I915_NEW_TEXTURE;
 511 }
 512
 513
 514
 515 static void i915_set_framebuffer_state(struct pipe_context *pipe,
 516                                        const struct pipe_framebuffer_state *fb)
 517 {
 518    struct i915_context *i915 = i915_context(pipe);
 519
 520    i915->framebuffer = *fb; /* struct copy */
 521
 522    i915->dirty |= I915_NEW_FRAMEBUFFER;
 523 }
 524
 525
 526
 527 static void i915_set_clip_state( struct pipe_context *pipe,
 528                              const struct pipe_clip_state *clip )
 529 {
 530    struct i915_context *i915 = i915_context(pipe);
 531
 532    draw_set_clip_state(i915->draw, clip);
 533
 534    i915->dirty |= I915_NEW_CLIP;
 535 }
 536
 537
 538
 539 /* Called when driver state tracker notices changes to the viewport
 540  * matrix:
 541  */
 542 static void i915_set_viewport_state( struct pipe_context *pipe,
 543                                      const struct pipe_viewport_state *viewport )
 544 {
 545    struct i915_context *i915 = i915_context(pipe);
 546
 547    i915->viewport = *viewport; /* struct copy */
 548
 549    /* pass the viewport info to the draw module */
 550    draw_set_viewport_state(i915->draw, &i915->viewport);
 551
 552    i915->dirty |= I915_NEW_VIEWPORT;
 553 }
 554
 555
 556 static void *
 557 i915_create_rasterizer_state(struct pipe_context *pipe,
 558                              const struct pipe_rasterizer_state *rasterizer)
 559 {
 560    struct i915_rasterizer_state *cso = CALLOC_STRUCT( i915_rasterizer_state );
 561
 562    cso->templ = rasterizer;
 563    cso->color_interp = rasterizer->flatshade ? INTERP_CONSTANT : INTERP_LINEAR;
 564    cso->light_twoside = rasterizer->light_twoside;
 565    cso->ds[0].u = _3DSTATE_DEPTH_OFFSET_SCALE;
 566    cso->ds[1].f = rasterizer->offset_scale;
 567    if (rasterizer->poly_stipple_enable) {
 568       cso->st |= ST1_ENABLE;
 569    }
 570
 571    if (rasterizer->scissor)
 572       cso->sc[0] = _3DSTATE_SCISSOR_ENABLE_CMD | ENABLE_SCISSOR_RECT;
 573    else
 574       cso->sc[0] = _3DSTATE_SCISSOR_ENABLE_CMD | DISABLE_SCISSOR_RECT;
 575
 576    switch (rasterizer->cull_mode) {
 577    case PIPE_WINDING_NONE:
 578       cso->LIS4 |= S4_CULLMODE_NONE;
 579       break;
 580    case PIPE_WINDING_CW:
 581       cso->LIS4 |= S4_CULLMODE_CW;
 582       break;
 583    case PIPE_WINDING_CCW:
 584       cso->LIS4 |= S4_CULLMODE_CCW;
 585       break;
 586    case PIPE_WINDING_BOTH:
 587       cso->LIS4 |= S4_CULLMODE_BOTH;
 588       break;
 589    }
 590
 591    {
 592       int line_width = CLAMP((int)(rasterizer->line_width * 2), 1, 0xf);
 593
 594       cso->LIS4 |= line_width << S4_LINE_WIDTH_SHIFT;
 595
 596       if (rasterizer->line_smooth)
 597          cso->LIS4 |= S4_LINE_ANTIALIAS_ENABLE;
 598    }
 599
 600    {
 601       int point_size = CLAMP((int) rasterizer->point_size, 1, 0xff);
 602
 603       cso->LIS4 |= point_size << S4_POINT_WIDTH_SHIFT;
 604    }
 605
 606    if (rasterizer->flatshade) {
 607       cso->LIS4 |= (S4_FLATSHADE_ALPHA |
 608                     S4_FLATSHADE_COLOR |
 609                     S4_FLATSHADE_SPECULAR);
 610    }
 611
 612    cso->LIS7 = fui( rasterizer->offset_units );
 613
 614
 615    return cso;
 616 }
 617
 618 static void i915_bind_rasterizer_state( struct pipe_context *pipe,
 619                                         void *setup )
 620 {
 621    struct i915_context *i915 = i915_context(pipe);
 622
 623    i915->rasterizer = (struct i915_rasterizer_state *)setup;
 624
 625    /* pass-through to draw module */
 626    draw_set_rasterizer_state(i915->draw, i915->rasterizer->templ);
 627
 628    i915->dirty |= I915_NEW_RASTERIZER;
 629 }
 630
 631 static void i915_delete_rasterizer_state(struct pipe_context *pipe,
 632                                          void *setup)
 633 {
 634    FREE(setup);
 635 }
 636
 637 static void i915_set_vertex_buffer( struct pipe_context *pipe,
 638                                     unsigned index,
 639                                     const struct pipe_vertex_buffer *buffer )
 640 {
 641    struct i915_context *i915 = i915_context(pipe);
 642    i915->vertex_buffer[index] = *buffer;
 643    /* pass-through to draw module */
 644    draw_set_vertex_buffer(i915->draw, index, buffer);
 645 }
 646
 647 static void i915_set_vertex_element( struct pipe_context *pipe,
 648                                      unsigned index,
 649                                      const struct pipe_vertex_element *element)
 650 {
 651    struct i915_context *i915 = i915_context(pipe);
 652    /* pass-through to draw module */
 653    draw_set_vertex_element(i915->draw, index, element);
 654 }
 655
 656
 657
 658 void
 659 i915_init_state_functions( struct i915_context *i915 )
 660 {
 661    i915->pipe.create_blend_state = i915_create_blend_state;
 662    i915->pipe.bind_blend_state = i915_bind_blend_state;
 663    i915->pipe.delete_blend_state = i915_delete_blend_state;
 664
 665    i915->pipe.create_sampler_state = i915_create_sampler_state;
 666    i915->pipe.bind_sampler_state = i915_bind_sampler_state;
 667    i915->pipe.delete_sampler_state = i915_delete_sampler_state;
 668
 669    i915->pipe.create_depth_stencil_alpha_state = i915_create_depth_stencil_state;
 670    i915->pipe.bind_depth_stencil_alpha_state = i915_bind_depth_stencil_state;
 671    i915->pipe.delete_depth_stencil_alpha_state = i915_delete_depth_stencil_state;
 672
 673    i915->pipe.create_rasterizer_state = i915_create_rasterizer_state;
 674    i915->pipe.bind_rasterizer_state = i915_bind_rasterizer_state;
 675    i915->pipe.delete_rasterizer_state = i915_delete_rasterizer_state;
 676    i915->pipe.create_fs_state = i915_create_fs_state;
 677    i915->pipe.bind_fs_state = i915_bind_fs_state;
 678    i915->pipe.delete_fs_state = i915_delete_fs_state;
 679    i915->pipe.create_vs_state = i915_create_vs_state;
 680    i915->pipe.bind_vs_state = i915_bind_vs_state;
 681    i915->pipe.delete_vs_state = i915_delete_vs_state;
 682
 683    i915->pipe.set_blend_color = i915_set_blend_color;
 684    i915->pipe.set_clip_state = i915_set_clip_state;
 685    i915->pipe.set_constant_buffer = i915_set_constant_buffer;
 686    i915->pipe.set_framebuffer_state = i915_set_framebuffer_state;
 687
 688    i915->pipe.set_polygon_stipple = i915_set_polygon_stipple;
 689    i915->pipe.set_scissor_state = i915_set_scissor_state;
 690    i915->pipe.set_sampler_texture = i915_set_sampler_texture;
 691    i915->pipe.set_viewport_state = i915_set_viewport_state;
 692    i915->pipe.set_vertex_buffer = i915_set_vertex_buffer;
 693    i915->pipe.set_vertex_element = i915_set_vertex_element;
 694 }