src/gallium/drivers/r300/r300_state.c

   1 /*
   2  * Copyright 2008 Corbin Simpson <MostAwesomeDude@gmail.com>
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * on the rights to use, copy, modify, merge, publish, distribute, sub
   8  * license, and/or sell copies of the Software, and to permit persons to whom
   9  * the Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  18  * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  19  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  20  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  21  * USE OR OTHER DEALINGS IN THE SOFTWARE. */
  22
  23 #include "draw/draw_context.h"
  24
  25 #include "util/u_math.h"
  26 #include "util/u_memory.h"
  27 #include "util/u_pack_color.h"
  28
  29 #include "tgsi/tgsi_parse.h"
  30
  31 #include "pipe/p_config.h"
  32 #include "pipe/internal/p_winsys_screen.h"
  33
  34 #include "r300_context.h"
  35 #include "r300_reg.h"
  36 #include "r300_screen.h"
  37 #include "r300_state_inlines.h"
  38 #include "r300_fs.h"
  39 #include "r300_vs.h"
  40
  41 /* r300_state: Functions used to intialize state context by translating
  42  * Gallium state objects into semi-native r300 state objects. */
  43
  44 /* Create a new blend state based on the CSO blend state.
  45  *
  46  * This encompasses alpha blending, logic/raster ops, and blend dithering. */
  47 static void* r300_create_blend_state(struct pipe_context* pipe,
  48                                      const struct pipe_blend_state* state)
  49 {
  50     struct r300_blend_state* blend = CALLOC_STRUCT(r300_blend_state);
  51
  52     {
  53         unsigned eqRGB = state->rgb_func;
  54         unsigned srcRGB = state->rgb_src_factor;
  55         unsigned dstRGB = state->rgb_dst_factor;
  56
  57         unsigned eqA = state->alpha_func;
  58         unsigned srcA = state->alpha_src_factor;
  59         unsigned dstA = state->alpha_dst_factor;
  60
  61         if (srcA != srcRGB ||
  62             dstA != dstRGB ||
  63             eqA != eqRGB) {
  64             blend->alpha_blend_control =
  65                 r300_translate_blend_function(eqA) |
  66                 (r300_translate_blend_factor(srcA) <<
  67                     R300_SRC_BLEND_SHIFT) |
  68                 (r300_translate_blend_factor(dstA) <<
  69                  R300_DST_BLEND_SHIFT);
  70             blend->blend_control |= R300_ALPHA_BLEND_ENABLE |
  71                 R300_SEPARATE_ALPHA_ENABLE;
  72         } else {
  73             blend->alpha_blend_control = R300_COMB_FCN_ADD_CLAMP |
  74                 (R300_BLEND_GL_ONE << R300_SRC_BLEND_SHIFT) |
  75                 (R300_BLEND_GL_ZERO << R300_DST_BLEND_SHIFT);
  76         }
  77     }
  78     if (state->blend_enable) {
  79         /* XXX for now, always do separate alpha...
  80          * is it faster to do it with one reg? */
  81         blend->blend_control |= R300_READ_ENABLE |
  82                 r300_translate_blend_function(state->rgb_func) |
  83                 (r300_translate_blend_factor(state->rgb_src_factor) <<
  84                     R300_SRC_BLEND_SHIFT) |
  85                 (r300_translate_blend_factor(state->rgb_dst_factor) <<
  86                     R300_DST_BLEND_SHIFT);
  87     } else {
  88         blend->blend_control =
  89             R300_COMB_FCN_ADD_CLAMP |
  90             (R300_BLEND_GL_ONE << R300_SRC_BLEND_SHIFT) |
  91             (R300_BLEND_GL_ZERO << R300_DST_BLEND_SHIFT);
  92     }
  93
  94     /* PIPE_LOGICOP_* don't need to be translated, fortunately. */
  95     if (state->logicop_enable) {
  96         blend->rop = R300_RB3D_ROPCNTL_ROP_ENABLE |
  97                 (state->logicop_func) << R300_RB3D_ROPCNTL_ROP_SHIFT;
  98     }
  99
 100     if (state->dither) {
 101         blend->dither = R300_RB3D_DITHER_CTL_DITHER_MODE_LUT |
 102                 R300_RB3D_DITHER_CTL_ALPHA_DITHER_MODE_LUT;
 103     }
 104
 105     return (void*)blend;
 106 }
 107
 108 /* Bind blend state. */
 109 static void r300_bind_blend_state(struct pipe_context* pipe,
 110                                   void* state)
 111 {
 112     struct r300_context* r300 = r300_context(pipe);
 113
 114     r300->blend_state = (struct r300_blend_state*)state;
 115     r300->dirty_state |= R300_NEW_BLEND;
 116 }
 117
 118 /* Free blend state. */
 119 static void r300_delete_blend_state(struct pipe_context* pipe,
 120                                     void* state)
 121 {
 122     FREE(state);
 123 }
 124
 125 /* Set blend color.
 126  * Setup both R300 and R500 registers, figure out later which one to write. */
 127 static void r300_set_blend_color(struct pipe_context* pipe,
 128                                  const struct pipe_blend_color* color)
 129 {
 130     struct r300_context* r300 = r300_context(pipe);
 131     ubyte ur, ug, ub, ua;
 132
 133     ur = float_to_ubyte(color->color[0]);
 134     ug = float_to_ubyte(color->color[1]);
 135     ub = float_to_ubyte(color->color[2]);
 136     ua = float_to_ubyte(color->color[3]);
 137
 138     util_pack_color(color->color, PIPE_FORMAT_A8R8G8B8_UNORM,
 139             &r300->blend_color_state->blend_color);
 140
 141     /* XXX this is wrong */
 142     r300->blend_color_state->blend_color_red_alpha = ur | (ua << 16);
 143     r300->blend_color_state->blend_color_green_blue = ub | (ug << 16);
 144
 145     r300->dirty_state |= R300_NEW_BLEND_COLOR;
 146 }
 147
 148 static void r300_set_clip_state(struct pipe_context* pipe,
 149                                 const struct pipe_clip_state* state)
 150 {
 151     struct r300_context* r300 = r300_context(pipe);
 152
 153     if (r300_screen(pipe->screen)->caps->has_tcl) {
 154         r300->clip_state = *state;
 155         r300->dirty_state |= R300_NEW_CLIP;
 156     } else {
 157         draw_flush(r300->draw);
 158         draw_set_clip_state(r300->draw, state);
 159     }
 160 }
 161
 162 static void
 163     r300_set_constant_buffer(struct pipe_context* pipe,
 164                              uint shader, uint index,
 165                              const struct pipe_constant_buffer* buffer)
 166 {
 167     struct r300_context* r300 = r300_context(pipe);
 168
 169     /* This entire chunk of code seems ever-so-slightly baked.
 170      * It's as if I've got pipe_buffer* matryoshkas... */
 171     if (buffer && buffer->buffer && buffer->buffer->size) {
 172         void* map = pipe->winsys->buffer_map(pipe->winsys, buffer->buffer,
 173                                              PIPE_BUFFER_USAGE_CPU_READ);
 174         memcpy(r300->shader_constants[shader].constants,
 175             map, buffer->buffer->size);
 176         pipe->winsys->buffer_unmap(pipe->winsys, buffer->buffer);
 177
 178         r300->shader_constants[shader].count =
 179             buffer->buffer->size / (sizeof(float) * 4);
 180     } else {
 181         r300->shader_constants[shader].count = 0;
 182     }
 183
 184     r300->dirty_state |= R300_NEW_CONSTANTS;
 185 }
 186
 187 /* Create a new depth, stencil, and alpha state based on the CSO dsa state.
 188  *
 189  * This contains the depth buffer, stencil buffer, alpha test, and such.
 190  * On the Radeon, depth and stencil buffer setup are intertwined, which is
 191  * the reason for some of the strange-looking assignments across registers. */
 192 static void*
 193         r300_create_dsa_state(struct pipe_context* pipe,
 194                               const struct pipe_depth_stencil_alpha_state* state)
 195 {
 196     struct r300_dsa_state* dsa = CALLOC_STRUCT(r300_dsa_state);
 197
 198     /* Depth test setup. */
 199     if (state->depth.enabled) {
 200         dsa->z_buffer_control |= R300_Z_ENABLE;
 201
 202         if (state->depth.writemask) {
 203             dsa->z_buffer_control |= R300_Z_WRITE_ENABLE;
 204         }
 205
 206         dsa->z_stencil_control |=
 207             (r300_translate_depth_stencil_function(state->depth.func) <<
 208                 R300_Z_FUNC_SHIFT);
 209     }
 210
 211     /* Stencil buffer setup. */
 212     if (state->stencil[0].enabled) {
 213         dsa->z_buffer_control |= R300_STENCIL_ENABLE;
 214         dsa->z_stencil_control |=
 215             (r300_translate_depth_stencil_function(state->stencil[0].func) <<
 216                 R300_S_FRONT_FUNC_SHIFT) |
 217             (r300_translate_stencil_op(state->stencil[0].fail_op) <<
 218                 R300_S_FRONT_SFAIL_OP_SHIFT) |
 219             (r300_translate_stencil_op(state->stencil[0].zpass_op) <<
 220                 R300_S_FRONT_ZPASS_OP_SHIFT) |
 221             (r300_translate_stencil_op(state->stencil[0].zfail_op) <<
 222                 R300_S_FRONT_ZFAIL_OP_SHIFT);
 223
 224         dsa->stencil_ref_mask = (state->stencil[0].ref_value) |
 225                 (state->stencil[0].valuemask << R300_STENCILMASK_SHIFT) |
 226                 (state->stencil[0].writemask << R300_STENCILWRITEMASK_SHIFT);
 227
 228         if (state->stencil[1].enabled) {
 229             dsa->z_buffer_control |= R300_STENCIL_FRONT_BACK;
 230             dsa->z_stencil_control |=
 231             (r300_translate_depth_stencil_function(state->stencil[1].func) <<
 232                 R300_S_BACK_FUNC_SHIFT) |
 233             (r300_translate_stencil_op(state->stencil[1].fail_op) <<
 234                 R300_S_BACK_SFAIL_OP_SHIFT) |
 235             (r300_translate_stencil_op(state->stencil[1].zpass_op) <<
 236                 R300_S_BACK_ZPASS_OP_SHIFT) |
 237             (r300_translate_stencil_op(state->stencil[1].zfail_op) <<
 238                 R300_S_BACK_ZFAIL_OP_SHIFT);
 239
 240             dsa->stencil_ref_bf = (state->stencil[1].ref_value) |
 241                 (state->stencil[1].valuemask << R300_STENCILMASK_SHIFT) |
 242                 (state->stencil[1].writemask << R300_STENCILWRITEMASK_SHIFT);
 243         }
 244     }
 245
 246     /* Alpha test setup. */
 247     if (state->alpha.enabled) {
 248         dsa->alpha_function =
 249             r300_translate_alpha_function(state->alpha.func) |
 250             R300_FG_ALPHA_FUNC_ENABLE;
 251         dsa->alpha_reference = CLAMP(state->alpha.ref_value * 1023.0f,
 252                                      0, 1023);
 253     }
 254
 255     return (void*)dsa;
 256 }
 257
 258 /* Bind DSA state. */
 259 static void r300_bind_dsa_state(struct pipe_context* pipe,
 260                                 void* state)
 261 {
 262     struct r300_context* r300 = r300_context(pipe);
 263
 264     r300->dsa_state = (struct r300_dsa_state*)state;
 265     r300->dirty_state |= R300_NEW_DSA;
 266 }
 267
 268 /* Free DSA state. */
 269 static void r300_delete_dsa_state(struct pipe_context* pipe,
 270                                   void* state)
 271 {
 272     FREE(state);
 273 }
 274
 275 static void r300_set_edgeflags(struct pipe_context* pipe,
 276                                const unsigned* bitfield)
 277 {
 278     /* XXX you know it's bad when i915 has this blank too */
 279     /* XXX and even worse, I have no idea WTF the bitfield is */
 280 }
 281
 282 static void
 283     r300_set_framebuffer_state(struct pipe_context* pipe,
 284                                const struct pipe_framebuffer_state* state)
 285 {
 286     struct r300_context* r300 = r300_context(pipe);
 287
 288     draw_flush(r300->draw);
 289
 290     r300->framebuffer_state = *state;
 291
 292     r300->dirty_state |= R300_NEW_FRAMEBUFFERS;
 293 }
 294
 295 /* Create fragment shader state. */
 296 static void* r300_create_fs_state(struct pipe_context* pipe,
 297                                   const struct pipe_shader_state* shader)
 298 {
 299     struct r300_fragment_shader* fs = NULL;
 300
 301     fs = (struct r300_fragment_shader*)CALLOC_STRUCT(r300_fragment_shader);
 302
 303     /* Copy state directly into shader. */
 304     fs->state = *shader;
 305     fs->state.tokens = tgsi_dup_tokens(shader->tokens);
 306
 307     tgsi_scan_shader(shader->tokens, &fs->info);
 308
 309     return (void*)fs;
 310 }
 311
 312 /* Bind fragment shader state. */
 313 static void r300_bind_fs_state(struct pipe_context* pipe, void* shader)
 314 {
 315     struct r300_context* r300 = r300_context(pipe);
 316     struct r300_fragment_shader* fs = (struct r300_fragment_shader*)shader;
 317
 318     if (fs == NULL) {
 319         r300->fs = NULL;
 320         return;
 321     } else if (!fs->translated) {
 322         r300_translate_fragment_shader(r300, fs);
 323     }
 324
 325     r300->fs = fs;
 326
 327     r300->dirty_state |= R300_NEW_FRAGMENT_SHADER;
 328 }
 329
 330 /* Delete fragment shader state. */
 331 static void r300_delete_fs_state(struct pipe_context* pipe, void* shader)
 332 {
 333     struct r300_fragment_shader* fs = (struct r300_fragment_shader*)shader;
 334     rc_constants_destroy(&fs->code.constants);
 335     FREE((void*)fs->state.tokens);
 336     FREE(shader);
 337 }
 338
 339 static void r300_set_polygon_stipple(struct pipe_context* pipe,
 340                                      const struct pipe_poly_stipple* state)
 341 {
 342     /* XXX no idea how to set this up, but not terribly important */
 343 }
 344
 345 /* Create a new rasterizer state based on the CSO rasterizer state.
 346  *
 347  * This is a very large chunk of state, and covers most of the graphics
 348  * backend (GB), geometry assembly (GA), and setup unit (SU) blocks.
 349  *
 350  * In a not entirely unironic sidenote, this state has nearly nothing to do
 351  * with the actual block on the Radeon called the rasterizer (RS). */
 352 static void* r300_create_rs_state(struct pipe_context* pipe,
 353                                   const struct pipe_rasterizer_state* state)
 354 {
 355     struct r300_rs_state* rs = CALLOC_STRUCT(r300_rs_state);
 356
 357     /* Copy rasterizer state for Draw. */
 358     rs->rs = *state;
 359
 360     rs->enable_vte = !state->bypass_vs_clip_and_viewport;
 361
 362 #ifdef PIPE_ARCH_LITTLE_ENDIAN
 363     rs->vap_control_status = R300_VC_NO_SWAP;
 364 #else
 365     rs->vap_control_status = R300_VC_32BIT_SWAP;
 366 #endif
 367
 368     /* If bypassing TCL, or if no TCL engine is present, turn off the HW TCL.
 369      * Else, enable HW TCL and force Draw's TCL off. */
 370     if (state->bypass_vs_clip_and_viewport ||
 371             !r300_screen(pipe->screen)->caps->has_tcl) {
 372         rs->vap_control_status |= R300_VAP_TCL_BYPASS;
 373     } else {
 374         rs->rs.bypass_vs_clip_and_viewport = TRUE;
 375     }
 376
 377     rs->point_size = pack_float_16_6x(state->point_size) |
 378         (pack_float_16_6x(state->point_size) << R300_POINTSIZE_X_SHIFT);
 379
 380     rs->point_minmax =
 381         ((int)(state->point_size_min * 6.0) <<
 382          R300_GA_POINT_MINMAX_MIN_SHIFT) |
 383         ((int)(state->point_size_max * 6.0) <<
 384          R300_GA_POINT_MINMAX_MAX_SHIFT);
 385
 386     rs->line_control = pack_float_16_6x(state->line_width) |
 387         R300_GA_LINE_CNTL_END_TYPE_COMP;
 388
 389     /* Radeons don't think in "CW/CCW", they think in "front/back". */
 390     if (state->front_winding == PIPE_WINDING_CW) {
 391         rs->cull_mode = R300_FRONT_FACE_CW;
 392
 393         if (state->offset_cw) {
 394             rs->polygon_offset_enable |= R300_FRONT_ENABLE;
 395         }
 396         if (state->offset_ccw) {
 397             rs->polygon_offset_enable |= R300_BACK_ENABLE;
 398         }
 399     } else {
 400         rs->cull_mode = R300_FRONT_FACE_CCW;
 401
 402         if (state->offset_ccw) {
 403             rs->polygon_offset_enable |= R300_FRONT_ENABLE;
 404         }
 405         if (state->offset_cw) {
 406             rs->polygon_offset_enable |= R300_BACK_ENABLE;
 407         }
 408     }
 409     if (state->front_winding & state->cull_mode) {
 410         rs->cull_mode |= R300_CULL_FRONT;
 411     }
 412     if (~(state->front_winding) & state->cull_mode) {
 413         rs->cull_mode |= R300_CULL_BACK;
 414     }
 415
 416     if (rs->polygon_offset_enable) {
 417         rs->depth_offset_front = rs->depth_offset_back =
 418             fui(state->offset_units);
 419         rs->depth_scale_front = rs->depth_scale_back =
 420             fui(state->offset_scale);
 421     }
 422
 423     if (state->line_stipple_enable) {
 424         rs->line_stipple_config =
 425             R300_GA_LINE_STIPPLE_CONFIG_LINE_RESET_LINE |
 426             (fui((float)state->line_stipple_factor) &
 427                 R300_GA_LINE_STIPPLE_CONFIG_STIPPLE_SCALE_MASK);
 428         /* XXX this might need to be scaled up */
 429         rs->line_stipple_value = state->line_stipple_pattern;
 430     }
 431
 432     if (state->flatshade) {
 433         rs->color_control = R300_SHADE_MODEL_FLAT;
 434     } else {
 435         rs->color_control = R300_SHADE_MODEL_SMOOTH;
 436     }
 437
 438     if (!state->flatshade_first) {
 439         rs->color_control |= R300_GA_COLOR_CONTROL_PROVOKING_VERTEX_LAST;
 440     }
 441
 442     return (void*)rs;
 443 }
 444
 445 /* Bind rasterizer state. */
 446 static void r300_bind_rs_state(struct pipe_context* pipe, void* state)
 447 {
 448     struct r300_context* r300 = r300_context(pipe);
 449     struct r300_rs_state* rs = (struct r300_rs_state*)state;
 450
 451     draw_flush(r300->draw);
 452     draw_set_rasterizer_state(r300->draw, &rs->rs);
 453
 454     r300->rs_state = rs;
 455     r300->dirty_state |= R300_NEW_RASTERIZER;
 456     r300->dirty_state |= R300_NEW_RS_BLOCK;
 457     r300->dirty_state |= R300_NEW_SCISSOR;
 458     r300->dirty_state |= R300_NEW_VIEWPORT;
 459 }
 460
 461 /* Free rasterizer state. */
 462 static void r300_delete_rs_state(struct pipe_context* pipe, void* state)
 463 {
 464     FREE(state);
 465 }
 466
 467 static void*
 468         r300_create_sampler_state(struct pipe_context* pipe,
 469                                   const struct pipe_sampler_state* state)
 470 {
 471     struct r300_context* r300 = r300_context(pipe);
 472     struct r300_sampler_state* sampler = CALLOC_STRUCT(r300_sampler_state);
 473     int lod_bias;
 474
 475     sampler->filter0 |=
 476         (r300_translate_wrap(state->wrap_s) << R300_TX_WRAP_S_SHIFT) |
 477         (r300_translate_wrap(state->wrap_t) << R300_TX_WRAP_T_SHIFT) |
 478         (r300_translate_wrap(state->wrap_r) << R300_TX_WRAP_R_SHIFT);
 479
 480     sampler->filter0 |= r300_translate_tex_filters(state->min_img_filter,
 481                                                    state->mag_img_filter,
 482                                                    state->min_mip_filter);
 483
 484     lod_bias = CLAMP((int)(state->lod_bias * 32), -(1 << 9), (1 << 9) - 1);
 485
 486     sampler->filter1 |= lod_bias << R300_LOD_BIAS_SHIFT;
 487
 488     sampler->filter1 |= r300_anisotropy(state->max_anisotropy);
 489
 490     util_pack_color(state->border_color, PIPE_FORMAT_A8R8G8B8_UNORM,
 491                     &sampler->border_color);
 492
 493     /* R500-specific fixups and optimizations */
 494     if (r300_screen(r300->context.screen)->caps->is_r500) {
 495         sampler->filter1 |= R500_BORDER_FIX;
 496     }
 497
 498     return (void*)sampler;
 499 }
 500
 501 static void r300_bind_sampler_states(struct pipe_context* pipe,
 502                                      unsigned count,
 503                                      void** states)
 504 {
 505     struct r300_context* r300 = r300_context(pipe);
 506     int i;
 507
 508     if (count > 8) {
 509         return;
 510     }
 511
 512     for (i = 0; i < count; i++) {
 513         if (r300->sampler_states[i] != states[i]) {
 514             r300->sampler_states[i] = (struct r300_sampler_state*)states[i];
 515             r300->dirty_state |= (R300_NEW_SAMPLER << i);
 516         }
 517     }
 518
 519     r300->sampler_count = count;
 520 }
 521
 522 static void r300_delete_sampler_state(struct pipe_context* pipe, void* state)
 523 {
 524     FREE(state);
 525 }
 526
 527 static void r300_set_sampler_textures(struct pipe_context* pipe,
 528                                       unsigned count,
 529                                       struct pipe_texture** texture)
 530 {
 531     struct r300_context* r300 = r300_context(pipe);
 532     int i;
 533
 534     /* XXX magic num */
 535     if (count > 8) {
 536         return;
 537     }
 538
 539     for (i = 0; i < count; i++) {
 540         if (r300->textures[i] != (struct r300_texture*)texture[i]) {
 541             pipe_texture_reference((struct pipe_texture**)&r300->textures[i],
 542                 texture[i]);
 543             r300->dirty_state |= (R300_NEW_TEXTURE << i);
 544         }
 545     }
 546
 547     for (i = count; i < 8; i++) {
 548         if (r300->textures[i]) {
 549             pipe_texture_reference((struct pipe_texture**)&r300->textures[i],
 550                 NULL);
 551             r300->dirty_state |= (R300_NEW_TEXTURE << i);
 552         }
 553     }
 554
 555     r300->texture_count = count;
 556 }
 557
 558 static void r300_set_scissor_state(struct pipe_context* pipe,
 559                                    const struct pipe_scissor_state* state)
 560 {
 561     struct r300_context* r300 = r300_context(pipe);
 562
 563     if (r300_screen(r300->context.screen)->caps->is_r500) {
 564         r300->scissor_state->scissor_top_left =
 565             (state->minx << R300_SCISSORS_X_SHIFT) |
 566             (state->miny << R300_SCISSORS_Y_SHIFT);
 567         r300->scissor_state->scissor_bottom_right =
 568             ((state->maxx - 1) << R300_SCISSORS_X_SHIFT) |
 569             ((state->maxy - 1) << R300_SCISSORS_Y_SHIFT);
 570     } else {
 571         /* Offset of 1440 in non-R500 chipsets. */
 572         r300->scissor_state->scissor_top_left =
 573             ((state->minx + 1440) << R300_SCISSORS_X_SHIFT) |
 574             ((state->miny + 1440) << R300_SCISSORS_Y_SHIFT);
 575         r300->scissor_state->scissor_bottom_right =
 576             (((state->maxx - 1) + 1440) << R300_SCISSORS_X_SHIFT) |
 577             (((state->maxy - 1) + 1440) << R300_SCISSORS_Y_SHIFT);
 578     }
 579
 580     r300->dirty_state |= R300_NEW_SCISSOR;
 581 }
 582
 583 static void r300_set_viewport_state(struct pipe_context* pipe,
 584                                     const struct pipe_viewport_state* state)
 585 {
 586     struct r300_context* r300 = r300_context(pipe);
 587
 588     /* Do the transform in HW. */
 589     r300->viewport_state->vte_control = R300_VTX_W0_FMT;
 590
 591     if (state->scale[0] != 1.0f) {
 592         assert(state->scale[0] != 0.0f);
 593         r300->viewport_state->xscale = state->scale[0];
 594         r300->viewport_state->vte_control |= R300_VPORT_X_SCALE_ENA;
 595     }
 596     if (state->scale[1] != 1.0f) {
 597         assert(state->scale[1] != 0.0f);
 598         r300->viewport_state->yscale = state->scale[1];
 599         r300->viewport_state->vte_control |= R300_VPORT_Y_SCALE_ENA;
 600     }
 601     if (state->scale[2] != 1.0f) {
 602         assert(state->scale[2] != 0.0f);
 603         r300->viewport_state->zscale = state->scale[2];
 604         r300->viewport_state->vte_control |= R300_VPORT_Z_SCALE_ENA;
 605     }
 606     if (state->translate[0] != 0.0f) {
 607         r300->viewport_state->xoffset = state->translate[0];
 608         r300->viewport_state->vte_control |= R300_VPORT_X_OFFSET_ENA;
 609     }
 610     if (state->translate[1] != 0.0f) {
 611         r300->viewport_state->yoffset = state->translate[1];
 612         r300->viewport_state->vte_control |= R300_VPORT_Y_OFFSET_ENA;
 613     }
 614     if (state->translate[2] != 0.0f) {
 615         r300->viewport_state->zoffset = state->translate[2];
 616         r300->viewport_state->vte_control |= R300_VPORT_Z_OFFSET_ENA;
 617     }
 618
 619     r300->dirty_state |= R300_NEW_VIEWPORT;
 620 }
 621
 622 static void r300_set_vertex_buffers(struct pipe_context* pipe,
 623                                     unsigned count,
 624                                     const struct pipe_vertex_buffer* buffers)
 625 {
 626     struct r300_context* r300 = r300_context(pipe);
 627
 628     memcpy(r300->vertex_buffers, buffers,
 629         sizeof(struct pipe_vertex_buffer) * count);
 630
 631     r300->vertex_buffer_count = count;
 632
 633     draw_flush(r300->draw);
 634     draw_set_vertex_buffers(r300->draw, count, buffers);
 635 }
 636
 637 static void r300_set_vertex_elements(struct pipe_context* pipe,
 638                                     unsigned count,
 639                                     const struct pipe_vertex_element* elements)
 640 {
 641     struct r300_context* r300 = r300_context(pipe);
 642
 643     draw_flush(r300->draw);
 644     draw_set_vertex_elements(r300->draw, count, elements);
 645 }
 646
 647 static void* r300_create_vs_state(struct pipe_context* pipe,
 648                                   const struct pipe_shader_state* shader)
 649 {
 650     struct r300_context* r300 = r300_context(pipe);
 651
 652     if (r300_screen(pipe->screen)->caps->has_tcl) {
 653         struct r300_vertex_shader* vs = CALLOC_STRUCT(r300_vertex_shader);
 654         /* Copy state directly into shader. */
 655         vs->state = *shader;
 656         vs->state.tokens = tgsi_dup_tokens(shader->tokens);
 657
 658         tgsi_scan_shader(shader->tokens, &vs->info);
 659
 660         /* Appease Draw. */
 661         vs->draw = draw_create_vertex_shader(r300->draw, shader);
 662
 663         return (void*)vs;
 664     } else {
 665         return draw_create_vertex_shader(r300->draw, shader);
 666     }
 667 }
 668
 669 static void r300_bind_vs_state(struct pipe_context* pipe, void* shader)
 670 {
 671     struct r300_context* r300 = r300_context(pipe);
 672
 673     draw_flush(r300->draw);
 674
 675     if (r300_screen(pipe->screen)->caps->has_tcl) {
 676         struct r300_vertex_shader* vs = (struct r300_vertex_shader*)shader;
 677
 678         if (vs == NULL) {
 679             r300->vs = NULL;
 680             return;
 681         } else if (!vs->translated) {
 682             r300_translate_vertex_shader(r300, vs);
 683         }
 684
 685         draw_bind_vertex_shader(r300->draw, vs->draw);
 686         r300->vs = vs;
 687         r300->dirty_state |= R300_NEW_VERTEX_SHADER;
 688     } else {
 689         draw_bind_vertex_shader(r300->draw,
 690                 (struct draw_vertex_shader*)shader);
 691     }
 692 }
 693
 694 static void r300_delete_vs_state(struct pipe_context* pipe, void* shader)
 695 {
 696     struct r300_context* r300 = r300_context(pipe);
 697
 698     if (r300_screen(pipe->screen)->caps->has_tcl) {
 699         struct r300_vertex_shader* vs = (struct r300_vertex_shader*)shader;
 700
 701         rc_constants_destroy(&vs->code.constants);
 702         draw_delete_vertex_shader(r300->draw, vs->draw);
 703         FREE((void*)vs->state.tokens);
 704         FREE(shader);
 705     } else {
 706         draw_delete_vertex_shader(r300->draw,
 707                 (struct draw_vertex_shader*)shader);
 708     }
 709 }
 710
 711 void r300_init_state_functions(struct r300_context* r300)
 712 {
 713     r300->context.create_blend_state = r300_create_blend_state;
 714     r300->context.bind_blend_state = r300_bind_blend_state;
 715     r300->context.delete_blend_state = r300_delete_blend_state;
 716
 717     r300->context.set_blend_color = r300_set_blend_color;
 718
 719     r300->context.set_clip_state = r300_set_clip_state;
 720
 721     r300->context.set_constant_buffer = r300_set_constant_buffer;
 722
 723     r300->context.create_depth_stencil_alpha_state = r300_create_dsa_state;
 724     r300->context.bind_depth_stencil_alpha_state = r300_bind_dsa_state;
 725     r300->context.delete_depth_stencil_alpha_state = r300_delete_dsa_state;
 726
 727     r300->context.set_edgeflags = r300_set_edgeflags;
 728
 729     r300->context.set_framebuffer_state = r300_set_framebuffer_state;
 730
 731     r300->context.create_fs_state = r300_create_fs_state;
 732     r300->context.bind_fs_state = r300_bind_fs_state;
 733     r300->context.delete_fs_state = r300_delete_fs_state;
 734
 735     r300->context.set_polygon_stipple = r300_set_polygon_stipple;
 736
 737     r300->context.create_rasterizer_state = r300_create_rs_state;
 738     r300->context.bind_rasterizer_state = r300_bind_rs_state;
 739     r300->context.delete_rasterizer_state = r300_delete_rs_state;
 740
 741     r300->context.create_sampler_state = r300_create_sampler_state;
 742     r300->context.bind_sampler_states = r300_bind_sampler_states;
 743     r300->context.delete_sampler_state = r300_delete_sampler_state;
 744
 745     r300->context.set_sampler_textures = r300_set_sampler_textures;
 746
 747     r300->context.set_scissor_state = r300_set_scissor_state;
 748
 749     r300->context.set_viewport_state = r300_set_viewport_state;
 750
 751     r300->context.set_vertex_buffers = r300_set_vertex_buffers;
 752     r300->context.set_vertex_elements = r300_set_vertex_elements;
 753
 754     r300->context.create_vs_state = r300_create_vs_state;
 755     r300->context.bind_vs_state = r300_bind_vs_state;
 756     r300->context.delete_vs_state = r300_delete_vs_state;
 757 }