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     if (state->blend_enable)
  53     {
  54         unsigned eqRGB = state->rgb_func;
  55         unsigned srcRGB = state->rgb_src_factor;
  56         unsigned dstRGB = state->rgb_dst_factor;
  57
  58         unsigned eqA = state->alpha_func;
  59         unsigned srcA = state->alpha_src_factor;
  60         unsigned dstA = state->alpha_dst_factor;
  61
  62         /* despite the name, ALPHA_BLEND_ENABLE has nothing to do with alpha,
  63          * this is just the crappy D3D naming */
  64         blend->blend_control = R300_ALPHA_BLEND_ENABLE |
  65             r300_translate_blend_function(eqRGB) |
  66             ( r300_translate_blend_factor(srcRGB) << R300_SRC_BLEND_SHIFT) |
  67             ( r300_translate_blend_factor(dstRGB) << R300_DST_BLEND_SHIFT);
  68
  69         /* optimization: some operations do not require the destination color */
  70         if (eqRGB == PIPE_BLEND_MIN || eqA == PIPE_BLEND_MIN ||
  71             eqRGB == PIPE_BLEND_MAX || eqA == PIPE_BLEND_MAX ||
  72             dstRGB != PIPE_BLENDFACTOR_ZERO ||
  73             dstA != PIPE_BLENDFACTOR_ZERO ||
  74             srcRGB == PIPE_BLENDFACTOR_DST_COLOR ||
  75             srcRGB == PIPE_BLENDFACTOR_DST_ALPHA ||
  76             srcRGB == PIPE_BLENDFACTOR_INV_DST_COLOR ||
  77             srcRGB == PIPE_BLENDFACTOR_INV_DST_ALPHA ||
  78             srcA == PIPE_BLENDFACTOR_DST_COLOR ||
  79             srcA == PIPE_BLENDFACTOR_DST_ALPHA ||
  80             srcA == PIPE_BLENDFACTOR_INV_DST_COLOR ||
  81             srcA == PIPE_BLENDFACTOR_INV_DST_ALPHA)
  82             blend->blend_control |= R300_READ_ENABLE;
  83
  84         /* XXX implement the optimization with DISCARD_SRC_PIXELS*/
  85         /* XXX implement the optimization with SRC_ALPHA_?_NO_READ */
  86
  87         /* separate alpha */
  88         if (srcA != srcRGB || dstA != dstRGB || eqA != eqRGB) {
  89             blend->blend_control |= R300_SEPARATE_ALPHA_ENABLE;
  90             blend->alpha_blend_control =
  91                 r300_translate_blend_function(eqA) |
  92                 (r300_translate_blend_factor(srcA) << R300_SRC_BLEND_SHIFT) |
  93                 (r300_translate_blend_factor(dstA) << R300_DST_BLEND_SHIFT);
  94         }
  95     }
  96
  97     /* PIPE_LOGICOP_* don't need to be translated, fortunately. */
  98     if (state->logicop_enable) {
  99         blend->rop = R300_RB3D_ROPCNTL_ROP_ENABLE |
 100                 (state->logicop_func) << R300_RB3D_ROPCNTL_ROP_SHIFT;
 101     }
 102
 103     if (state->dither) {
 104         blend->dither = R300_RB3D_DITHER_CTL_DITHER_MODE_LUT |
 105                 R300_RB3D_DITHER_CTL_ALPHA_DITHER_MODE_LUT;
 106     }
 107
 108     return (void*)blend;
 109 }
 110
 111 /* Bind blend state. */
 112 static void r300_bind_blend_state(struct pipe_context* pipe,
 113                                   void* state)
 114 {
 115     struct r300_context* r300 = r300_context(pipe);
 116
 117     r300->blend_state = (struct r300_blend_state*)state;
 118     r300->dirty_state |= R300_NEW_BLEND;
 119 }
 120
 121 /* Free blend state. */
 122 static void r300_delete_blend_state(struct pipe_context* pipe,
 123                                     void* state)
 124 {
 125     FREE(state);
 126 }
 127
 128 /* Convert float to 10bit integer */
 129 static unsigned float_to_fixed10(float f)
 130 {
 131     return CLAMP((unsigned)(f * 1023.9f), 0, 1023);
 132 }
 133
 134 /* Set blend color.
 135  * Setup both R300 and R500 registers, figure out later which one to write. */
 136 static void r300_set_blend_color(struct pipe_context* pipe,
 137                                  const struct pipe_blend_color* color)
 138 {
 139     struct r300_context* r300 = r300_context(pipe);
 140
 141     util_pack_color(color->color, PIPE_FORMAT_A8R8G8B8_UNORM,
 142             &r300->blend_color_state->blend_color);
 143
 144     /* XXX if FP16 blending is enabled, we should use the FP16 format */
 145     r300->blend_color_state->blend_color_red_alpha =
 146         float_to_fixed10(color->color[0]) |
 147         (float_to_fixed10(color->color[3]) << 16);
 148     r300->blend_color_state->blend_color_green_blue =
 149         float_to_fixed10(color->color[2]) |
 150         (float_to_fixed10(color->color[1]) << 16);
 151
 152     r300->dirty_state |= R300_NEW_BLEND_COLOR;
 153 }
 154
 155 static void r300_set_clip_state(struct pipe_context* pipe,
 156                                 const struct pipe_clip_state* state)
 157 {
 158     struct r300_context* r300 = r300_context(pipe);
 159
 160     if (r300_screen(pipe->screen)->caps->has_tcl) {
 161         r300->clip_state = *state;
 162         r300->dirty_state |= R300_NEW_CLIP;
 163     } else {
 164         draw_flush(r300->draw);
 165         draw_set_clip_state(r300->draw, state);
 166     }
 167 }
 168
 169 static void
 170     r300_set_constant_buffer(struct pipe_context* pipe,
 171                              uint shader, uint index,
 172                              const struct pipe_constant_buffer* buffer)
 173 {
 174     struct r300_context* r300 = r300_context(pipe);
 175
 176     /* This entire chunk of code seems ever-so-slightly baked.
 177      * It's as if I've got pipe_buffer* matryoshkas... */
 178     if (buffer && buffer->buffer && buffer->buffer->size) {
 179         void* map = pipe->winsys->buffer_map(pipe->winsys, buffer->buffer,
 180                                              PIPE_BUFFER_USAGE_CPU_READ);
 181         memcpy(r300->shader_constants[shader].constants,
 182             map, buffer->buffer->size);
 183         pipe->winsys->buffer_unmap(pipe->winsys, buffer->buffer);
 184
 185         r300->shader_constants[shader].count =
 186             buffer->buffer->size / (sizeof(float) * 4);
 187     } else {
 188         r300->shader_constants[shader].count = 0;
 189     }
 190
 191     r300->dirty_state |= R300_NEW_CONSTANTS;
 192 }
 193
 194 /* Create a new depth, stencil, and alpha state based on the CSO dsa state.
 195  *
 196  * This contains the depth buffer, stencil buffer, alpha test, and such.
 197  * On the Radeon, depth and stencil buffer setup are intertwined, which is
 198  * the reason for some of the strange-looking assignments across registers. */
 199 static void*
 200         r300_create_dsa_state(struct pipe_context* pipe,
 201                               const struct pipe_depth_stencil_alpha_state* state)
 202 {
 203     struct r300_capabilities *caps =
 204         r300_screen(r300_context(pipe)->context.screen)->caps;
 205     struct r300_dsa_state* dsa = CALLOC_STRUCT(r300_dsa_state);
 206
 207     /* Depth test setup. */
 208     if (state->depth.enabled) {
 209         dsa->z_buffer_control |= R300_Z_ENABLE;
 210
 211         if (state->depth.writemask) {
 212             dsa->z_buffer_control |= R300_Z_WRITE_ENABLE;
 213         }
 214
 215         dsa->z_stencil_control |=
 216             (r300_translate_depth_stencil_function(state->depth.func) <<
 217                 R300_Z_FUNC_SHIFT);
 218     }
 219
 220     /* Stencil buffer setup. */
 221     if (state->stencil[0].enabled) {
 222         dsa->z_buffer_control |= R300_STENCIL_ENABLE;
 223         dsa->z_stencil_control |=
 224             (r300_translate_depth_stencil_function(state->stencil[0].func) <<
 225                 R300_S_FRONT_FUNC_SHIFT) |
 226             (r300_translate_stencil_op(state->stencil[0].fail_op) <<
 227                 R300_S_FRONT_SFAIL_OP_SHIFT) |
 228             (r300_translate_stencil_op(state->stencil[0].zpass_op) <<
 229                 R300_S_FRONT_ZPASS_OP_SHIFT) |
 230             (r300_translate_stencil_op(state->stencil[0].zfail_op) <<
 231                 R300_S_FRONT_ZFAIL_OP_SHIFT);
 232
 233         dsa->stencil_ref_mask = (state->stencil[0].ref_value) |
 234                 (state->stencil[0].valuemask << R300_STENCILMASK_SHIFT) |
 235                 (state->stencil[0].writemask << R300_STENCILWRITEMASK_SHIFT);
 236
 237         if (state->stencil[1].enabled) {
 238             dsa->z_buffer_control |= R300_STENCIL_FRONT_BACK;
 239             dsa->z_stencil_control |=
 240             (r300_translate_depth_stencil_function(state->stencil[1].func) <<
 241                 R300_S_BACK_FUNC_SHIFT) |
 242             (r300_translate_stencil_op(state->stencil[1].fail_op) <<
 243                 R300_S_BACK_SFAIL_OP_SHIFT) |
 244             (r300_translate_stencil_op(state->stencil[1].zpass_op) <<
 245                 R300_S_BACK_ZPASS_OP_SHIFT) |
 246             (r300_translate_stencil_op(state->stencil[1].zfail_op) <<
 247                 R300_S_BACK_ZFAIL_OP_SHIFT);
 248
 249             /* XXX it seems r3xx doesn't support STENCILREFMASK_BF */
 250             if (caps->is_r500)
 251             {
 252                 dsa->z_buffer_control |= R500_STENCIL_REFMASK_FRONT_BACK;
 253                 dsa->stencil_ref_bf = (state->stencil[1].ref_value) |
 254                     (state->stencil[1].valuemask <<
 255                     R300_STENCILMASK_SHIFT) |
 256                     (state->stencil[1].writemask <<
 257                     R300_STENCILWRITEMASK_SHIFT);
 258             }
 259         }
 260     }
 261
 262     /* Alpha test setup. */
 263     if (state->alpha.enabled) {
 264         dsa->alpha_function =
 265             r300_translate_alpha_function(state->alpha.func) |
 266             R300_FG_ALPHA_FUNC_ENABLE;
 267
 268         /* XXX figure out why emitting 10bit alpha ref causes CS to dump */
 269         /* always use 8bit alpha ref */
 270         dsa->alpha_function |= float_to_ubyte(state->alpha.ref_value);
 271
 272         if (caps->is_r500)
 273             dsa->alpha_function |= R500_FG_ALPHA_FUNC_8BIT;
 274     }
 275
 276     return (void*)dsa;
 277 }
 278
 279 /* Bind DSA state. */
 280 static void r300_bind_dsa_state(struct pipe_context* pipe,
 281                                 void* state)
 282 {
 283     struct r300_context* r300 = r300_context(pipe);
 284
 285     r300->dsa_state = (struct r300_dsa_state*)state;
 286     r300->dirty_state |= R300_NEW_DSA;
 287 }
 288
 289 /* Free DSA state. */
 290 static void r300_delete_dsa_state(struct pipe_context* pipe,
 291                                   void* state)
 292 {
 293     FREE(state);
 294 }
 295
 296 static void r300_set_edgeflags(struct pipe_context* pipe,
 297                                const unsigned* bitfield)
 298 {
 299     /* XXX you know it's bad when i915 has this blank too */
 300     /* XXX and even worse, I have no idea WTF the bitfield is */
 301 }
 302
 303 static void
 304     r300_set_framebuffer_state(struct pipe_context* pipe,
 305                                const struct pipe_framebuffer_state* state)
 306 {
 307     struct r300_context* r300 = r300_context(pipe);
 308
 309     draw_flush(r300->draw);
 310
 311     r300->framebuffer_state = *state;
 312
 313     r300->dirty_state |= R300_NEW_FRAMEBUFFERS;
 314 }
 315
 316 /* Create fragment shader state. */
 317 static void* r300_create_fs_state(struct pipe_context* pipe,
 318                                   const struct pipe_shader_state* shader)
 319 {
 320     struct r300_fragment_shader* fs = NULL;
 321
 322     fs = (struct r300_fragment_shader*)CALLOC_STRUCT(r300_fragment_shader);
 323
 324     /* Copy state directly into shader. */
 325     fs->state = *shader;
 326     fs->state.tokens = tgsi_dup_tokens(shader->tokens);
 327
 328     tgsi_scan_shader(shader->tokens, &fs->info);
 329
 330     return (void*)fs;
 331 }
 332
 333 /* Bind fragment shader state. */
 334 static void r300_bind_fs_state(struct pipe_context* pipe, void* shader)
 335 {
 336     struct r300_context* r300 = r300_context(pipe);
 337     struct r300_fragment_shader* fs = (struct r300_fragment_shader*)shader;
 338
 339     if (fs == NULL) {
 340         r300->fs = NULL;
 341         return;
 342     } else if (!fs->translated) {
 343         r300_translate_fragment_shader(r300, fs);
 344     }
 345
 346     r300->fs = fs;
 347
 348     r300->dirty_state |= R300_NEW_FRAGMENT_SHADER;
 349 }
 350
 351 /* Delete fragment shader state. */
 352 static void r300_delete_fs_state(struct pipe_context* pipe, void* shader)
 353 {
 354     struct r300_fragment_shader* fs = (struct r300_fragment_shader*)shader;
 355     rc_constants_destroy(&fs->code.constants);
 356     FREE((void*)fs->state.tokens);
 357     FREE(shader);
 358 }
 359
 360 static void r300_set_polygon_stipple(struct pipe_context* pipe,
 361                                      const struct pipe_poly_stipple* state)
 362 {
 363     /* XXX no idea how to set this up, but not terribly important */
 364 }
 365
 366 /* Create a new rasterizer state based on the CSO rasterizer state.
 367  *
 368  * This is a very large chunk of state, and covers most of the graphics
 369  * backend (GB), geometry assembly (GA), and setup unit (SU) blocks.
 370  *
 371  * In a not entirely unironic sidenote, this state has nearly nothing to do
 372  * with the actual block on the Radeon called the rasterizer (RS). */
 373 static void* r300_create_rs_state(struct pipe_context* pipe,
 374                                   const struct pipe_rasterizer_state* state)
 375 {
 376     struct r300_rs_state* rs = CALLOC_STRUCT(r300_rs_state);
 377
 378     /* Copy rasterizer state for Draw. */
 379     rs->rs = *state;
 380
 381     rs->enable_vte = !state->bypass_vs_clip_and_viewport;
 382
 383 #ifdef PIPE_ARCH_LITTLE_ENDIAN
 384     rs->vap_control_status = R300_VC_NO_SWAP;
 385 #else
 386     rs->vap_control_status = R300_VC_32BIT_SWAP;
 387 #endif
 388
 389     /* If bypassing TCL, or if no TCL engine is present, turn off the HW TCL.
 390      * Else, enable HW TCL and force Draw's TCL off. */
 391     if (state->bypass_vs_clip_and_viewport ||
 392             !r300_screen(pipe->screen)->caps->has_tcl) {
 393         rs->vap_control_status |= R300_VAP_TCL_BYPASS;
 394     } else {
 395         rs->rs.bypass_vs_clip_and_viewport = TRUE;
 396     }
 397
 398     rs->point_size = pack_float_16_6x(state->point_size) |
 399         (pack_float_16_6x(state->point_size) << R300_POINTSIZE_X_SHIFT);
 400
 401     rs->point_minmax =
 402         ((int)(state->point_size_min * 6.0) <<
 403          R300_GA_POINT_MINMAX_MIN_SHIFT) |
 404         ((int)(state->point_size_max * 6.0) <<
 405          R300_GA_POINT_MINMAX_MAX_SHIFT);
 406
 407     rs->line_control = pack_float_16_6x(state->line_width) |
 408         R300_GA_LINE_CNTL_END_TYPE_COMP;
 409
 410     /* Radeons don't think in "CW/CCW", they think in "front/back". */
 411     if (state->front_winding == PIPE_WINDING_CW) {
 412         rs->cull_mode = R300_FRONT_FACE_CW;
 413
 414         if (state->offset_cw) {
 415             rs->polygon_offset_enable |= R300_FRONT_ENABLE;
 416         }
 417         if (state->offset_ccw) {
 418             rs->polygon_offset_enable |= R300_BACK_ENABLE;
 419         }
 420     } else {
 421         rs->cull_mode = R300_FRONT_FACE_CCW;
 422
 423         if (state->offset_ccw) {
 424             rs->polygon_offset_enable |= R300_FRONT_ENABLE;
 425         }
 426         if (state->offset_cw) {
 427             rs->polygon_offset_enable |= R300_BACK_ENABLE;
 428         }
 429     }
 430     if (state->front_winding & state->cull_mode) {
 431         rs->cull_mode |= R300_CULL_FRONT;
 432     }
 433     if (~(state->front_winding) & state->cull_mode) {
 434         rs->cull_mode |= R300_CULL_BACK;
 435     }
 436
 437     if (rs->polygon_offset_enable) {
 438         rs->depth_offset_front = rs->depth_offset_back =
 439             fui(state->offset_units);
 440         rs->depth_scale_front = rs->depth_scale_back =
 441             fui(state->offset_scale);
 442     }
 443
 444     if (state->line_stipple_enable) {
 445         rs->line_stipple_config =
 446             R300_GA_LINE_STIPPLE_CONFIG_LINE_RESET_LINE |
 447             (fui((float)state->line_stipple_factor) &
 448                 R300_GA_LINE_STIPPLE_CONFIG_STIPPLE_SCALE_MASK);
 449         /* XXX this might need to be scaled up */
 450         rs->line_stipple_value = state->line_stipple_pattern;
 451     }
 452
 453     if (state->flatshade) {
 454         rs->color_control = R300_SHADE_MODEL_FLAT;
 455     } else {
 456         rs->color_control = R300_SHADE_MODEL_SMOOTH;
 457     }
 458
 459     if (!state->flatshade_first) {
 460         rs->color_control |= R300_GA_COLOR_CONTROL_PROVOKING_VERTEX_LAST;
 461     }
 462
 463     return (void*)rs;
 464 }
 465
 466 /* Bind rasterizer state. */
 467 static void r300_bind_rs_state(struct pipe_context* pipe, void* state)
 468 {
 469     struct r300_context* r300 = r300_context(pipe);
 470     struct r300_rs_state* rs = (struct r300_rs_state*)state;
 471
 472     draw_flush(r300->draw);
 473     draw_set_rasterizer_state(r300->draw, &rs->rs);
 474
 475     r300->rs_state = rs;
 476     r300->dirty_state |= R300_NEW_RASTERIZER;
 477     r300->dirty_state |= R300_NEW_RS_BLOCK;
 478     r300->dirty_state |= R300_NEW_SCISSOR;
 479     r300->dirty_state |= R300_NEW_VIEWPORT;
 480 }
 481
 482 /* Free rasterizer state. */
 483 static void r300_delete_rs_state(struct pipe_context* pipe, void* state)
 484 {
 485     FREE(state);
 486 }
 487
 488 static void*
 489         r300_create_sampler_state(struct pipe_context* pipe,
 490                                   const struct pipe_sampler_state* state)
 491 {
 492     struct r300_context* r300 = r300_context(pipe);
 493     struct r300_sampler_state* sampler = CALLOC_STRUCT(r300_sampler_state);
 494     int lod_bias;
 495
 496     sampler->filter0 |=
 497         (r300_translate_wrap(state->wrap_s) << R300_TX_WRAP_S_SHIFT) |
 498         (r300_translate_wrap(state->wrap_t) << R300_TX_WRAP_T_SHIFT) |
 499         (r300_translate_wrap(state->wrap_r) << R300_TX_WRAP_R_SHIFT);
 500
 501     sampler->filter0 |= r300_translate_tex_filters(state->min_img_filter,
 502                                                    state->mag_img_filter,
 503                                                    state->min_mip_filter);
 504
 505     lod_bias = CLAMP((int)(state->lod_bias * 32), -(1 << 9), (1 << 9) - 1);
 506
 507     sampler->filter1 |= lod_bias << R300_LOD_BIAS_SHIFT;
 508
 509     sampler->filter1 |= r300_anisotropy(state->max_anisotropy);
 510
 511     util_pack_color(state->border_color, PIPE_FORMAT_A8R8G8B8_UNORM,
 512                     &sampler->border_color);
 513
 514     /* R500-specific fixups and optimizations */
 515     if (r300_screen(r300->context.screen)->caps->is_r500) {
 516         sampler->filter1 |= R500_BORDER_FIX;
 517     }
 518
 519     return (void*)sampler;
 520 }
 521
 522 static void r300_bind_sampler_states(struct pipe_context* pipe,
 523                                      unsigned count,
 524                                      void** states)
 525 {
 526     struct r300_context* r300 = r300_context(pipe);
 527     int i;
 528
 529     if (count > 8) {
 530         return;
 531     }
 532
 533     for (i = 0; i < count; i++) {
 534         if (r300->sampler_states[i] != states[i]) {
 535             r300->sampler_states[i] = (struct r300_sampler_state*)states[i];
 536             r300->dirty_state |= (R300_NEW_SAMPLER << i);
 537         }
 538     }
 539
 540     r300->sampler_count = count;
 541 }
 542
 543 static void r300_delete_sampler_state(struct pipe_context* pipe, void* state)
 544 {
 545     FREE(state);
 546 }
 547
 548 static void r300_set_sampler_textures(struct pipe_context* pipe,
 549                                       unsigned count,
 550                                       struct pipe_texture** texture)
 551 {
 552     struct r300_context* r300 = r300_context(pipe);
 553     int i;
 554
 555     /* XXX magic num */
 556     if (count > 8) {
 557         return;
 558     }
 559
 560     for (i = 0; i < count; i++) {
 561         if (r300->textures[i] != (struct r300_texture*)texture[i]) {
 562             pipe_texture_reference((struct pipe_texture**)&r300->textures[i],
 563                 texture[i]);
 564             r300->dirty_state |= (R300_NEW_TEXTURE << i);
 565         }
 566     }
 567
 568     for (i = count; i < 8; i++) {
 569         if (r300->textures[i]) {
 570             pipe_texture_reference((struct pipe_texture**)&r300->textures[i],
 571                 NULL);
 572             r300->dirty_state |= (R300_NEW_TEXTURE << i);
 573         }
 574     }
 575
 576     r300->texture_count = count;
 577 }
 578
 579 static void r300_set_scissor_state(struct pipe_context* pipe,
 580                                    const struct pipe_scissor_state* state)
 581 {
 582     struct r300_context* r300 = r300_context(pipe);
 583
 584     if (r300_screen(r300->context.screen)->caps->is_r500) {
 585         r300->scissor_state->scissor_top_left =
 586             (state->minx << R300_SCISSORS_X_SHIFT) |
 587             (state->miny << R300_SCISSORS_Y_SHIFT);
 588         r300->scissor_state->scissor_bottom_right =
 589             ((state->maxx - 1) << R300_SCISSORS_X_SHIFT) |
 590             ((state->maxy - 1) << R300_SCISSORS_Y_SHIFT);
 591     } else {
 592         /* Offset of 1440 in non-R500 chipsets. */
 593         r300->scissor_state->scissor_top_left =
 594             ((state->minx + 1440) << R300_SCISSORS_X_SHIFT) |
 595             ((state->miny + 1440) << R300_SCISSORS_Y_SHIFT);
 596         r300->scissor_state->scissor_bottom_right =
 597             (((state->maxx - 1) + 1440) << R300_SCISSORS_X_SHIFT) |
 598             (((state->maxy - 1) + 1440) << R300_SCISSORS_Y_SHIFT);
 599     }
 600
 601     r300->dirty_state |= R300_NEW_SCISSOR;
 602 }
 603
 604 static void r300_set_viewport_state(struct pipe_context* pipe,
 605                                     const struct pipe_viewport_state* state)
 606 {
 607     struct r300_context* r300 = r300_context(pipe);
 608
 609     /* Do the transform in HW. */
 610     r300->viewport_state->vte_control = R300_VTX_W0_FMT;
 611
 612     if (state->scale[0] != 1.0f) {
 613         r300->viewport_state->xscale = state->scale[0];
 614         r300->viewport_state->vte_control |= R300_VPORT_X_SCALE_ENA;
 615     }
 616     if (state->scale[1] != 1.0f) {
 617         r300->viewport_state->yscale = state->scale[1];
 618         r300->viewport_state->vte_control |= R300_VPORT_Y_SCALE_ENA;
 619     }
 620     if (state->scale[2] != 1.0f) {
 621         r300->viewport_state->zscale = state->scale[2];
 622         r300->viewport_state->vte_control |= R300_VPORT_Z_SCALE_ENA;
 623     }
 624     if (state->translate[0] != 0.0f) {
 625         r300->viewport_state->xoffset = state->translate[0];
 626         r300->viewport_state->vte_control |= R300_VPORT_X_OFFSET_ENA;
 627     }
 628     if (state->translate[1] != 0.0f) {
 629         r300->viewport_state->yoffset = state->translate[1];
 630         r300->viewport_state->vte_control |= R300_VPORT_Y_OFFSET_ENA;
 631     }
 632     if (state->translate[2] != 0.0f) {
 633         r300->viewport_state->zoffset = state->translate[2];
 634         r300->viewport_state->vte_control |= R300_VPORT_Z_OFFSET_ENA;
 635     }
 636
 637     r300->dirty_state |= R300_NEW_VIEWPORT;
 638 }
 639
 640 static void r300_set_vertex_buffers(struct pipe_context* pipe,
 641                                     unsigned count,
 642                                     const struct pipe_vertex_buffer* buffers)
 643 {
 644     struct r300_context* r300 = r300_context(pipe);
 645
 646     memcpy(r300->vertex_buffers, buffers,
 647         sizeof(struct pipe_vertex_buffer) * count);
 648
 649     r300->vertex_buffer_count = count;
 650
 651     draw_flush(r300->draw);
 652     draw_set_vertex_buffers(r300->draw, count, buffers);
 653 }
 654
 655 static void r300_set_vertex_elements(struct pipe_context* pipe,
 656                                     unsigned count,
 657                                     const struct pipe_vertex_element* elements)
 658 {
 659     struct r300_context* r300 = r300_context(pipe);
 660
 661     draw_flush(r300->draw);
 662     draw_set_vertex_elements(r300->draw, count, elements);
 663 }
 664
 665 static void* r300_create_vs_state(struct pipe_context* pipe,
 666                                   const struct pipe_shader_state* shader)
 667 {
 668     struct r300_context* r300 = r300_context(pipe);
 669
 670     if (r300_screen(pipe->screen)->caps->has_tcl) {
 671         struct r300_vertex_shader* vs = CALLOC_STRUCT(r300_vertex_shader);
 672         /* Copy state directly into shader. */
 673         vs->state = *shader;
 674         vs->state.tokens = tgsi_dup_tokens(shader->tokens);
 675
 676         tgsi_scan_shader(shader->tokens, &vs->info);
 677
 678         /* Appease Draw. */
 679         vs->draw = draw_create_vertex_shader(r300->draw, shader);
 680
 681         return (void*)vs;
 682     } else {
 683         return draw_create_vertex_shader(r300->draw, shader);
 684     }
 685 }
 686
 687 static void r300_bind_vs_state(struct pipe_context* pipe, void* shader)
 688 {
 689     struct r300_context* r300 = r300_context(pipe);
 690
 691     draw_flush(r300->draw);
 692
 693     if (r300_screen(pipe->screen)->caps->has_tcl) {
 694         struct r300_vertex_shader* vs = (struct r300_vertex_shader*)shader;
 695
 696         if (vs == NULL) {
 697             r300->vs = NULL;
 698             return;
 699         } else if (!vs->translated) {
 700             r300_translate_vertex_shader(r300, vs);
 701         }
 702
 703         draw_bind_vertex_shader(r300->draw, vs->draw);
 704         r300->vs = vs;
 705         r300->dirty_state |= R300_NEW_VERTEX_SHADER;
 706     } else {
 707         draw_bind_vertex_shader(r300->draw,
 708                 (struct draw_vertex_shader*)shader);
 709     }
 710 }
 711
 712 static void r300_delete_vs_state(struct pipe_context* pipe, void* shader)
 713 {
 714     struct r300_context* r300 = r300_context(pipe);
 715
 716     if (r300_screen(pipe->screen)->caps->has_tcl) {
 717         struct r300_vertex_shader* vs = (struct r300_vertex_shader*)shader;
 718
 719         rc_constants_destroy(&vs->code.constants);
 720         draw_delete_vertex_shader(r300->draw, vs->draw);
 721         FREE((void*)vs->state.tokens);
 722         FREE(shader);
 723     } else {
 724         draw_delete_vertex_shader(r300->draw,
 725                 (struct draw_vertex_shader*)shader);
 726     }
 727 }
 728
 729 void r300_init_state_functions(struct r300_context* r300)
 730 {
 731     r300->context.create_blend_state = r300_create_blend_state;
 732     r300->context.bind_blend_state = r300_bind_blend_state;
 733     r300->context.delete_blend_state = r300_delete_blend_state;
 734
 735     r300->context.set_blend_color = r300_set_blend_color;
 736
 737     r300->context.set_clip_state = r300_set_clip_state;
 738
 739     r300->context.set_constant_buffer = r300_set_constant_buffer;
 740
 741     r300->context.create_depth_stencil_alpha_state = r300_create_dsa_state;
 742     r300->context.bind_depth_stencil_alpha_state = r300_bind_dsa_state;
 743     r300->context.delete_depth_stencil_alpha_state = r300_delete_dsa_state;
 744
 745     r300->context.set_edgeflags = r300_set_edgeflags;
 746
 747     r300->context.set_framebuffer_state = r300_set_framebuffer_state;
 748
 749     r300->context.create_fs_state = r300_create_fs_state;
 750     r300->context.bind_fs_state = r300_bind_fs_state;
 751     r300->context.delete_fs_state = r300_delete_fs_state;
 752
 753     r300->context.set_polygon_stipple = r300_set_polygon_stipple;
 754
 755     r300->context.create_rasterizer_state = r300_create_rs_state;
 756     r300->context.bind_rasterizer_state = r300_bind_rs_state;
 757     r300->context.delete_rasterizer_state = r300_delete_rs_state;
 758
 759     r300->context.create_sampler_state = r300_create_sampler_state;
 760     r300->context.bind_sampler_states = r300_bind_sampler_states;
 761     r300->context.delete_sampler_state = r300_delete_sampler_state;
 762
 763     r300->context.set_sampler_textures = r300_set_sampler_textures;
 764
 765     r300->context.set_scissor_state = r300_set_scissor_state;
 766
 767     r300->context.set_viewport_state = r300_set_viewport_state;
 768
 769     r300->context.set_vertex_buffers = r300_set_vertex_buffers;
 770     r300->context.set_vertex_elements = r300_set_vertex_elements;
 771
 772     r300->context.create_vs_state = r300_create_vs_state;
 773     r300->context.bind_vs_state = r300_bind_vs_state;
 774     r300->context.delete_vs_state = r300_delete_vs_state;
 775 }