src/gallium/drivers/r300/r300_state.c

   1 /*
   2  * Copyright 2008 Corbin Simpson <MostAwesomeDude@gmail.com>
   3  * Copyright 2009 Marek Olšák <maraeo@gmail.com>
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * on the rights to use, copy, modify, merge, publish, distribute, sub
   9  * license, and/or sell copies of the Software, and to permit persons to whom
  10  * the Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the next
  13  * paragraph) shall be included in all copies or substantial portions of the
  14  * Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  20  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  21  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  22  * USE OR OTHER DEALINGS IN THE SOFTWARE. */
  23
  24 #include "draw/draw_context.h"
  25
  26 #include "util/u_math.h"
  27 #include "util/u_memory.h"
  28 #include "util/u_pack_color.h"
  29
  30 #include "tgsi/tgsi_parse.h"
  31
  32 #include "pipe/p_config.h"
  33 #include "pipe/internal/p_winsys_screen.h"
  34
  35 #include "r300_context.h"
  36 #include "r300_reg.h"
  37 #include "r300_screen.h"
  38 #include "r300_state_inlines.h"
  39 #include "r300_fs.h"
  40 #include "r300_vs.h"
  41
  42 /* r300_state: Functions used to intialize state context by translating
  43  * Gallium state objects into semi-native r300 state objects. */
  44
  45 static boolean blend_discard_if_src_alpha_0(unsigned srcRGB, unsigned srcA,
  46                                             unsigned dstRGB, unsigned dstA)
  47 {
  48     /* If the blend equation is ADD or REVERSE_SUBTRACT,
  49      * SRC_ALPHA == 0, and the following state is set, the colorbuffer
  50      * will not be changed.
  51      * Notice that the dst factors are the src factors inverted. */
  52     return (srcRGB == PIPE_BLENDFACTOR_SRC_ALPHA ||
  53             srcRGB == PIPE_BLENDFACTOR_SRC_ALPHA_SATURATE ||
  54             srcRGB == PIPE_BLENDFACTOR_ZERO) &&
  55            (srcA == PIPE_BLENDFACTOR_SRC_COLOR ||
  56             srcA == PIPE_BLENDFACTOR_SRC_ALPHA ||
  57             srcA == PIPE_BLENDFACTOR_SRC_ALPHA_SATURATE ||
  58             srcA == PIPE_BLENDFACTOR_ZERO) &&
  59            (dstRGB == PIPE_BLENDFACTOR_INV_SRC_ALPHA ||
  60             dstRGB == PIPE_BLENDFACTOR_ONE) &&
  61            (dstA == PIPE_BLENDFACTOR_INV_SRC_COLOR ||
  62             dstA == PIPE_BLENDFACTOR_INV_SRC_ALPHA ||
  63             dstA == PIPE_BLENDFACTOR_ONE);
  64 }
  65
  66 static boolean blend_discard_if_src_alpha_1(unsigned srcRGB, unsigned srcA,
  67                                             unsigned dstRGB, unsigned dstA)
  68 {
  69     /* If the blend equation is ADD or REVERSE_SUBTRACT,
  70      * SRC_ALPHA == 1, and the following state is set, the colorbuffer
  71      * will not be changed.
  72      * Notice that the dst factors are the src factors inverted. */
  73     return (srcRGB == PIPE_BLENDFACTOR_INV_SRC_ALPHA ||
  74             srcRGB == PIPE_BLENDFACTOR_ZERO) &&
  75            (srcA == PIPE_BLENDFACTOR_INV_SRC_COLOR ||
  76             srcA == PIPE_BLENDFACTOR_INV_SRC_ALPHA ||
  77             srcA == PIPE_BLENDFACTOR_ZERO) &&
  78            (dstRGB == PIPE_BLENDFACTOR_SRC_ALPHA ||
  79             dstRGB == PIPE_BLENDFACTOR_ONE) &&
  80            (dstA == PIPE_BLENDFACTOR_SRC_COLOR ||
  81             dstA == PIPE_BLENDFACTOR_SRC_ALPHA ||
  82             dstA == PIPE_BLENDFACTOR_ONE);
  83 }
  84
  85 static boolean blend_discard_if_src_color_0(unsigned srcRGB, unsigned srcA,
  86                                             unsigned dstRGB, unsigned dstA)
  87 {
  88     /* If the blend equation is ADD or REVERSE_SUBTRACT,
  89      * SRC_COLOR == (0,0,0), and the following state is set, the colorbuffer
  90      * will not be changed.
  91      * Notice that the dst factors are the src factors inverted. */
  92     return (srcRGB == PIPE_BLENDFACTOR_SRC_COLOR ||
  93             srcRGB == PIPE_BLENDFACTOR_ZERO) &&
  94            (srcA == PIPE_BLENDFACTOR_ZERO) &&
  95            (dstRGB == PIPE_BLENDFACTOR_INV_SRC_COLOR ||
  96             dstRGB == PIPE_BLENDFACTOR_ONE) &&
  97            (dstA == PIPE_BLENDFACTOR_ONE);
  98 }
  99
 100 static boolean blend_discard_if_src_color_1(unsigned srcRGB, unsigned srcA,
 101                                             unsigned dstRGB, unsigned dstA)
 102 {
 103     /* If the blend equation is ADD or REVERSE_SUBTRACT,
 104      * SRC_COLOR == (1,1,1), and the following state is set, the colorbuffer
 105      * will not be changed.
 106      * Notice that the dst factors are the src factors inverted. */
 107     return (srcRGB == PIPE_BLENDFACTOR_INV_SRC_COLOR ||
 108             srcRGB == PIPE_BLENDFACTOR_ZERO) &&
 109            (srcA == PIPE_BLENDFACTOR_ZERO) &&
 110            (dstRGB == PIPE_BLENDFACTOR_SRC_COLOR ||
 111             dstRGB == PIPE_BLENDFACTOR_ONE) &&
 112            (dstA == PIPE_BLENDFACTOR_ONE);
 113 }
 114
 115 static boolean blend_discard_if_src_alpha_color_0(unsigned srcRGB, unsigned srcA,
 116                                                   unsigned dstRGB, unsigned dstA)
 117 {
 118     /* If the blend equation is ADD or REVERSE_SUBTRACT,
 119      * SRC_ALPHA_COLOR == (0,0,0,0), and the following state is set,
 120      * the colorbuffer will not be changed.
 121      * Notice that the dst factors are the src factors inverted. */
 122     return (srcRGB == PIPE_BLENDFACTOR_SRC_COLOR ||
 123             srcRGB == PIPE_BLENDFACTOR_SRC_ALPHA ||
 124             srcRGB == PIPE_BLENDFACTOR_SRC_ALPHA_SATURATE ||
 125             srcRGB == PIPE_BLENDFACTOR_ZERO) &&
 126            (srcA == PIPE_BLENDFACTOR_SRC_COLOR ||
 127             srcA == PIPE_BLENDFACTOR_SRC_ALPHA ||
 128             srcA == PIPE_BLENDFACTOR_SRC_ALPHA_SATURATE ||
 129             srcA == PIPE_BLENDFACTOR_ZERO) &&
 130            (dstRGB == PIPE_BLENDFACTOR_INV_SRC_COLOR ||
 131             dstRGB == PIPE_BLENDFACTOR_INV_SRC_ALPHA ||
 132             dstRGB == PIPE_BLENDFACTOR_ONE) &&
 133            (dstA == PIPE_BLENDFACTOR_INV_SRC_COLOR ||
 134             dstA == PIPE_BLENDFACTOR_INV_SRC_ALPHA ||
 135             dstA == PIPE_BLENDFACTOR_ONE);
 136 }
 137
 138 static boolean blend_discard_if_src_alpha_color_1(unsigned srcRGB, unsigned srcA,
 139                                                   unsigned dstRGB, unsigned dstA)
 140 {
 141     /* If the blend equation is ADD or REVERSE_SUBTRACT,
 142      * SRC_ALPHA_COLOR == (1,1,1,1), and the following state is set,
 143      * the colorbuffer will not be changed.
 144      * Notice that the dst factors are the src factors inverted. */
 145     return (srcRGB == PIPE_BLENDFACTOR_INV_SRC_COLOR ||
 146             srcRGB == PIPE_BLENDFACTOR_INV_SRC_ALPHA ||
 147             srcRGB == PIPE_BLENDFACTOR_ZERO) &&
 148            (srcA == PIPE_BLENDFACTOR_INV_SRC_COLOR ||
 149             srcA == PIPE_BLENDFACTOR_INV_SRC_ALPHA ||
 150             srcA == PIPE_BLENDFACTOR_ZERO) &&
 151            (dstRGB == PIPE_BLENDFACTOR_SRC_COLOR ||
 152             dstRGB == PIPE_BLENDFACTOR_SRC_ALPHA ||
 153             dstRGB == PIPE_BLENDFACTOR_ONE) &&
 154            (dstA == PIPE_BLENDFACTOR_SRC_COLOR ||
 155             dstA == PIPE_BLENDFACTOR_SRC_ALPHA ||
 156             dstA == PIPE_BLENDFACTOR_ONE);
 157 }
 158
 159 /* Create a new blend state based on the CSO blend state.
 160  *
 161  * This encompasses alpha blending, logic/raster ops, and blend dithering. */
 162 static void* r300_create_blend_state(struct pipe_context* pipe,
 163                                      const struct pipe_blend_state* state)
 164 {
 165     struct r300_blend_state* blend = CALLOC_STRUCT(r300_blend_state);
 166
 167     if (state->blend_enable)
 168     {
 169         unsigned eqRGB = state->rgb_func;
 170         unsigned srcRGB = state->rgb_src_factor;
 171         unsigned dstRGB = state->rgb_dst_factor;
 172
 173         unsigned eqA = state->alpha_func;
 174         unsigned srcA = state->alpha_src_factor;
 175         unsigned dstA = state->alpha_dst_factor;
 176
 177         /* despite the name, ALPHA_BLEND_ENABLE has nothing to do with alpha,
 178          * this is just the crappy D3D naming */
 179         blend->blend_control = R300_ALPHA_BLEND_ENABLE |
 180             r300_translate_blend_function(eqRGB) |
 181             ( r300_translate_blend_factor(srcRGB) << R300_SRC_BLEND_SHIFT) |
 182             ( r300_translate_blend_factor(dstRGB) << R300_DST_BLEND_SHIFT);
 183
 184         /* Optimization: some operations do not require the destination color.
 185          *
 186          * When SRC_ALPHA_SATURATE is used, colorbuffer reads must be enabled,
 187          * otherwise blending gives incorrect results. It seems to be
 188          * a hardware bug. */
 189         if (eqRGB == PIPE_BLEND_MIN || eqA == PIPE_BLEND_MIN ||
 190             eqRGB == PIPE_BLEND_MAX || eqA == PIPE_BLEND_MAX ||
 191             dstRGB != PIPE_BLENDFACTOR_ZERO ||
 192             dstA != PIPE_BLENDFACTOR_ZERO ||
 193             srcRGB == PIPE_BLENDFACTOR_DST_COLOR ||
 194             srcRGB == PIPE_BLENDFACTOR_DST_ALPHA ||
 195             srcRGB == PIPE_BLENDFACTOR_INV_DST_COLOR ||
 196             srcRGB == PIPE_BLENDFACTOR_INV_DST_ALPHA ||
 197             srcA == PIPE_BLENDFACTOR_DST_COLOR ||
 198             srcA == PIPE_BLENDFACTOR_DST_ALPHA ||
 199             srcA == PIPE_BLENDFACTOR_INV_DST_COLOR ||
 200             srcA == PIPE_BLENDFACTOR_INV_DST_ALPHA ||
 201             srcRGB == PIPE_BLENDFACTOR_SRC_ALPHA_SATURATE) {
 202             /* Enable reading from the colorbuffer. */
 203             blend->blend_control |= R300_READ_ENABLE;
 204
 205             if (r300_screen(r300_context(pipe)->context.screen)->caps->is_r500) {
 206                 /* Optimization: Depending on incoming pixels, we can
 207                  * conditionally disable the reading in hardware... */
 208                 if (eqRGB != PIPE_BLEND_MIN && eqA != PIPE_BLEND_MIN &&
 209                     eqRGB != PIPE_BLEND_MAX && eqA != PIPE_BLEND_MAX) {
 210                     /* Disable reading if SRC_ALPHA == 0. */
 211                     if ((dstRGB == PIPE_BLENDFACTOR_SRC_ALPHA ||
 212                          dstRGB == PIPE_BLENDFACTOR_ZERO) &&
 213                         (dstA == PIPE_BLENDFACTOR_SRC_COLOR ||
 214                          dstA == PIPE_BLENDFACTOR_SRC_ALPHA ||
 215                          dstA == PIPE_BLENDFACTOR_ZERO)) {
 216                          blend->blend_control |= R500_SRC_ALPHA_0_NO_READ;
 217                     }
 218
 219                     /* Disable reading if SRC_ALPHA == 1. */
 220                     if ((dstRGB == PIPE_BLENDFACTOR_INV_SRC_ALPHA ||
 221                          dstRGB == PIPE_BLENDFACTOR_ZERO) &&
 222                         (dstA == PIPE_BLENDFACTOR_INV_SRC_COLOR ||
 223                          dstA == PIPE_BLENDFACTOR_INV_SRC_ALPHA ||
 224                          dstA == PIPE_BLENDFACTOR_ZERO)) {
 225                          blend->blend_control |= R500_SRC_ALPHA_1_NO_READ;
 226                     }
 227                 }
 228             }
 229         }
 230
 231         /* Optimization: discard pixels which don't change the colorbuffer.
 232          *
 233          * The code below is non-trivial and some math is involved.
 234          *
 235          * Discarding pixels must be disabled when FP16 AA is enabled.
 236          * This is a hardware bug. Also, this implementation wouldn't work
 237          * with FP blending enabled and equation clamping disabled.
 238          *
 239          * Equations other than ADD are rarely used and therefore won't be
 240          * optimized. */
 241         if ((eqRGB == PIPE_BLEND_ADD || eqRGB == PIPE_BLEND_REVERSE_SUBTRACT) &&
 242             (eqA == PIPE_BLEND_ADD || eqA == PIPE_BLEND_REVERSE_SUBTRACT)) {
 243             /* ADD: X+Y
 244              * REVERSE_SUBTRACT: Y-X
 245              *
 246              * The idea is:
 247              * If X = src*srcFactor = 0 and Y = dst*dstFactor = 1,
 248              * then CB will not be changed.
 249              *
 250              * Given the srcFactor and dstFactor variables, we can derive
 251              * what src and dst should be equal to and discard appropriate
 252              * pixels.
 253              */
 254             if (blend_discard_if_src_alpha_0(srcRGB, srcA, dstRGB, dstA)) {
 255                 blend->blend_control |= R300_DISCARD_SRC_PIXELS_SRC_ALPHA_0;
 256             } else if (blend_discard_if_src_alpha_1(srcRGB, srcA,
 257                                                     dstRGB, dstA)) {
 258                 blend->blend_control |= R300_DISCARD_SRC_PIXELS_SRC_ALPHA_1;
 259             } else if (blend_discard_if_src_color_0(srcRGB, srcA,
 260                                                     dstRGB, dstA)) {
 261                 blend->blend_control |= R300_DISCARD_SRC_PIXELS_SRC_COLOR_0;
 262             } else if (blend_discard_if_src_color_1(srcRGB, srcA,
 263                                                     dstRGB, dstA)) {
 264                 blend->blend_control |= R300_DISCARD_SRC_PIXELS_SRC_COLOR_1;
 265             } else if (blend_discard_if_src_alpha_color_0(srcRGB, srcA,
 266                                                           dstRGB, dstA)) {
 267                 blend->blend_control |=
 268                     R300_DISCARD_SRC_PIXELS_SRC_ALPHA_COLOR_0;
 269             } else if (blend_discard_if_src_alpha_color_1(srcRGB, srcA,
 270                                                           dstRGB, dstA)) {
 271                 blend->blend_control |=
 272                     R300_DISCARD_SRC_PIXELS_SRC_ALPHA_COLOR_1;
 273             }
 274         }
 275
 276         /* separate alpha */
 277         if (srcA != srcRGB || dstA != dstRGB || eqA != eqRGB) {
 278             blend->blend_control |= R300_SEPARATE_ALPHA_ENABLE;
 279             blend->alpha_blend_control =
 280                 r300_translate_blend_function(eqA) |
 281                 (r300_translate_blend_factor(srcA) << R300_SRC_BLEND_SHIFT) |
 282                 (r300_translate_blend_factor(dstA) << R300_DST_BLEND_SHIFT);
 283         }
 284     }
 285
 286     /* PIPE_LOGICOP_* don't need to be translated, fortunately. */
 287     if (state->logicop_enable) {
 288         blend->rop = R300_RB3D_ROPCNTL_ROP_ENABLE |
 289                 (state->logicop_func) << R300_RB3D_ROPCNTL_ROP_SHIFT;
 290     }
 291
 292     /* Color Channel Mask */
 293     if (state->colormask & PIPE_MASK_R) {
 294         blend->color_channel_mask |= RB3D_COLOR_CHANNEL_MASK_RED_MASK0;
 295     }
 296     if (state->colormask & PIPE_MASK_G) {
 297         blend->color_channel_mask |= RB3D_COLOR_CHANNEL_MASK_GREEN_MASK0;
 298     }
 299     if (state->colormask & PIPE_MASK_B) {
 300         blend->color_channel_mask |= RB3D_COLOR_CHANNEL_MASK_BLUE_MASK0;
 301     }
 302     if (state->colormask & PIPE_MASK_A) {
 303         blend->color_channel_mask |= RB3D_COLOR_CHANNEL_MASK_ALPHA_MASK0;
 304     }
 305
 306     if (state->dither) {
 307         blend->dither = R300_RB3D_DITHER_CTL_DITHER_MODE_LUT |
 308                 R300_RB3D_DITHER_CTL_ALPHA_DITHER_MODE_LUT;
 309     }
 310
 311     return (void*)blend;
 312 }
 313
 314 /* Bind blend state. */
 315 static void r300_bind_blend_state(struct pipe_context* pipe,
 316                                   void* state)
 317 {
 318     struct r300_context* r300 = r300_context(pipe);
 319
 320     r300->blend_state = (struct r300_blend_state*)state;
 321     r300->dirty_state |= R300_NEW_BLEND;
 322 }
 323
 324 /* Free blend state. */
 325 static void r300_delete_blend_state(struct pipe_context* pipe,
 326                                     void* state)
 327 {
 328     FREE(state);
 329 }
 330
 331 /* Convert float to 10bit integer */
 332 static unsigned float_to_fixed10(float f)
 333 {
 334     return CLAMP((unsigned)(f * 1023.9f), 0, 1023);
 335 }
 336
 337 /* Set blend color.
 338  * Setup both R300 and R500 registers, figure out later which one to write. */
 339 static void r300_set_blend_color(struct pipe_context* pipe,
 340                                  const struct pipe_blend_color* color)
 341 {
 342     struct r300_context* r300 = r300_context(pipe);
 343     union util_color uc;
 344
 345     util_pack_color(color->color, PIPE_FORMAT_A8R8G8B8_UNORM, &uc);
 346     r300->blend_color_state->blend_color = uc.ui;
 347
 348     /* XXX if FP16 blending is enabled, we should use the FP16 format */
 349     r300->blend_color_state->blend_color_red_alpha =
 350         float_to_fixed10(color->color[0]) |
 351         (float_to_fixed10(color->color[3]) << 16);
 352     r300->blend_color_state->blend_color_green_blue =
 353         float_to_fixed10(color->color[2]) |
 354         (float_to_fixed10(color->color[1]) << 16);
 355
 356     r300->dirty_state |= R300_NEW_BLEND_COLOR;
 357 }
 358
 359 static void r300_set_clip_state(struct pipe_context* pipe,
 360                                 const struct pipe_clip_state* state)
 361 {
 362     struct r300_context* r300 = r300_context(pipe);
 363
 364     if (r300_screen(pipe->screen)->caps->has_tcl) {
 365         r300->clip_state = *state;
 366         r300->dirty_state |= R300_NEW_CLIP;
 367     } else {
 368         draw_flush(r300->draw);
 369         draw_set_clip_state(r300->draw, state);
 370     }
 371 }
 372
 373 /* Create a new depth, stencil, and alpha state based on the CSO dsa state.
 374  *
 375  * This contains the depth buffer, stencil buffer, alpha test, and such.
 376  * On the Radeon, depth and stencil buffer setup are intertwined, which is
 377  * the reason for some of the strange-looking assignments across registers. */
 378 static void*
 379         r300_create_dsa_state(struct pipe_context* pipe,
 380                               const struct pipe_depth_stencil_alpha_state* state)
 381 {
 382     struct r300_capabilities *caps =
 383         r300_screen(r300_context(pipe)->context.screen)->caps;
 384     struct r300_dsa_state* dsa = CALLOC_STRUCT(r300_dsa_state);
 385
 386     /* Depth test setup. */
 387     if (state->depth.enabled) {
 388         dsa->z_buffer_control |= R300_Z_ENABLE;
 389
 390         if (state->depth.writemask) {
 391             dsa->z_buffer_control |= R300_Z_WRITE_ENABLE;
 392         }
 393
 394         dsa->z_stencil_control |=
 395             (r300_translate_depth_stencil_function(state->depth.func) <<
 396                 R300_Z_FUNC_SHIFT);
 397     }
 398
 399     /* Stencil buffer setup. */
 400     if (state->stencil[0].enabled) {
 401         dsa->z_buffer_control |= R300_STENCIL_ENABLE;
 402         dsa->z_stencil_control |=
 403             (r300_translate_depth_stencil_function(state->stencil[0].func) <<
 404                 R300_S_FRONT_FUNC_SHIFT) |
 405             (r300_translate_stencil_op(state->stencil[0].fail_op) <<
 406                 R300_S_FRONT_SFAIL_OP_SHIFT) |
 407             (r300_translate_stencil_op(state->stencil[0].zpass_op) <<
 408                 R300_S_FRONT_ZPASS_OP_SHIFT) |
 409             (r300_translate_stencil_op(state->stencil[0].zfail_op) <<
 410                 R300_S_FRONT_ZFAIL_OP_SHIFT);
 411
 412         dsa->stencil_ref_mask = (state->stencil[0].ref_value) |
 413                 (state->stencil[0].valuemask << R300_STENCILMASK_SHIFT) |
 414                 (state->stencil[0].writemask << R300_STENCILWRITEMASK_SHIFT);
 415
 416         if (state->stencil[1].enabled) {
 417             dsa->z_buffer_control |= R300_STENCIL_FRONT_BACK;
 418             dsa->z_stencil_control |=
 419             (r300_translate_depth_stencil_function(state->stencil[1].func) <<
 420                 R300_S_BACK_FUNC_SHIFT) |
 421             (r300_translate_stencil_op(state->stencil[1].fail_op) <<
 422                 R300_S_BACK_SFAIL_OP_SHIFT) |
 423             (r300_translate_stencil_op(state->stencil[1].zpass_op) <<
 424                 R300_S_BACK_ZPASS_OP_SHIFT) |
 425             (r300_translate_stencil_op(state->stencil[1].zfail_op) <<
 426                 R300_S_BACK_ZFAIL_OP_SHIFT);
 427
 428             /* XXX it seems r3xx doesn't support STENCILREFMASK_BF */
 429             if (caps->is_r500)
 430             {
 431                 dsa->z_buffer_control |= R500_STENCIL_REFMASK_FRONT_BACK;
 432                 dsa->stencil_ref_bf = (state->stencil[1].ref_value) |
 433                     (state->stencil[1].valuemask <<
 434                     R300_STENCILMASK_SHIFT) |
 435                     (state->stencil[1].writemask <<
 436                     R300_STENCILWRITEMASK_SHIFT);
 437             }
 438         }
 439     }
 440
 441     /* Alpha test setup. */
 442     if (state->alpha.enabled) {
 443         dsa->alpha_function =
 444             r300_translate_alpha_function(state->alpha.func) |
 445             R300_FG_ALPHA_FUNC_ENABLE;
 446
 447         /* XXX figure out why emitting 10bit alpha ref causes CS to dump */
 448         /* always use 8bit alpha ref */
 449         dsa->alpha_function |= float_to_ubyte(state->alpha.ref_value);
 450
 451         if (caps->is_r500)
 452             dsa->alpha_function |= R500_FG_ALPHA_FUNC_8BIT;
 453     }
 454
 455     return (void*)dsa;
 456 }
 457
 458 /* Bind DSA state. */
 459 static void r300_bind_dsa_state(struct pipe_context* pipe,
 460                                 void* state)
 461 {
 462     struct r300_context* r300 = r300_context(pipe);
 463
 464     r300->dsa_state = (struct r300_dsa_state*)state;
 465     r300->dirty_state |= R300_NEW_DSA;
 466 }
 467
 468 /* Free DSA state. */
 469 static void r300_delete_dsa_state(struct pipe_context* pipe,
 470                                   void* state)
 471 {
 472     FREE(state);
 473 }
 474
 475 static void r300_set_scissor_regs(const struct pipe_scissor_state* state,
 476                                   struct r300_scissor_regs *scissor,
 477                                   boolean is_r500)
 478 {
 479     if (is_r500) {
 480         scissor->top_left =
 481             (state->minx << R300_SCISSORS_X_SHIFT) |
 482             (state->miny << R300_SCISSORS_Y_SHIFT);
 483         scissor->bottom_right =
 484             ((state->maxx - 1) << R300_SCISSORS_X_SHIFT) |
 485             ((state->maxy - 1) << R300_SCISSORS_Y_SHIFT);
 486     } else {
 487         /* Offset of 1440 in non-R500 chipsets. */
 488         scissor->top_left =
 489             ((state->minx + 1440) << R300_SCISSORS_X_SHIFT) |
 490             ((state->miny + 1440) << R300_SCISSORS_Y_SHIFT);
 491         scissor->bottom_right =
 492             (((state->maxx - 1) + 1440) << R300_SCISSORS_X_SHIFT) |
 493             (((state->maxy - 1) + 1440) << R300_SCISSORS_Y_SHIFT);
 494     }
 495
 496     scissor->empty_area = state->minx >= state->maxx ||
 497                           state->miny >= state->maxy;
 498 }
 499
 500 static void
 501     r300_set_framebuffer_state(struct pipe_context* pipe,
 502                                const struct pipe_framebuffer_state* state)
 503 {
 504     struct r300_context* r300 = r300_context(pipe);
 505     struct pipe_scissor_state scissor;
 506
 507     if (r300->draw) {
 508         draw_flush(r300->draw);
 509     }
 510
 511     r300->framebuffer_state = *state;
 512
 513     scissor.minx = scissor.miny = 0;
 514     scissor.maxx = state->width;
 515     scissor.maxy = state->height;
 516     r300_set_scissor_regs(&scissor, &r300->scissor_state->framebuffer,
 517                           r300_screen(r300->context.screen)->caps->is_r500);
 518
 519     /* Don't rely on the order of states being set for the first time. */
 520     if (!r300->rs_state || !r300->rs_state->rs.scissor) {
 521         r300->dirty_state |= R300_NEW_SCISSOR;
 522     }
 523     r300->dirty_state |= R300_NEW_FRAMEBUFFERS;
 524     r300->dirty_state |= R300_NEW_BLEND;
 525     r300->dirty_state |= R300_NEW_DSA;
 526 }
 527
 528 /* Create fragment shader state. */
 529 static void* r300_create_fs_state(struct pipe_context* pipe,
 530                                   const struct pipe_shader_state* shader)
 531 {
 532     struct r300_fragment_shader* fs = NULL;
 533
 534     fs = (struct r300_fragment_shader*)CALLOC_STRUCT(r300_fragment_shader);
 535
 536     /* Copy state directly into shader. */
 537     fs->state = *shader;
 538     fs->state.tokens = tgsi_dup_tokens(shader->tokens);
 539
 540     tgsi_scan_shader(shader->tokens, &fs->info);
 541     r300_shader_read_fs_inputs(&fs->info, &fs->inputs);
 542
 543     return (void*)fs;
 544 }
 545
 546 /* Bind fragment shader state. */
 547 static void r300_bind_fs_state(struct pipe_context* pipe, void* shader)
 548 {
 549     struct r300_context* r300 = r300_context(pipe);
 550     struct r300_fragment_shader* fs = (struct r300_fragment_shader*)shader;
 551
 552     if (fs == NULL) {
 553         r300->fs = NULL;
 554         return;
 555     }
 556
 557     r300->fs = fs;
 558     r300_pick_fragment_shader(r300);
 559
 560     if (r300->vs && r300_vertex_shader_setup_wpos(r300)) {
 561         r300->dirty_state |= R300_NEW_VERTEX_FORMAT;
 562     }
 563
 564     r300->dirty_state |= R300_NEW_FRAGMENT_SHADER | R300_NEW_FRAGMENT_SHADER_CONSTANTS;
 565 }
 566
 567 /* Delete fragment shader state. */
 568 static void r300_delete_fs_state(struct pipe_context* pipe, void* shader)
 569 {
 570     struct r300_fragment_shader* fs = (struct r300_fragment_shader*)shader;
 571     struct r300_fragment_shader_code *tmp, *ptr = fs->first;
 572
 573     while (ptr) {
 574         tmp = ptr;
 575         ptr = ptr->next;
 576         rc_constants_destroy(&tmp->code.constants);
 577         FREE(tmp);
 578     }
 579     FREE((void*)fs->state.tokens);
 580     FREE(shader);
 581 }
 582
 583 static void r300_set_polygon_stipple(struct pipe_context* pipe,
 584                                      const struct pipe_poly_stipple* state)
 585 {
 586     /* XXX no idea how to set this up, but not terribly important */
 587 }
 588
 589 /* Create a new rasterizer state based on the CSO rasterizer state.
 590  *
 591  * This is a very large chunk of state, and covers most of the graphics
 592  * backend (GB), geometry assembly (GA), and setup unit (SU) blocks.
 593  *
 594  * In a not entirely unironic sidenote, this state has nearly nothing to do
 595  * with the actual block on the Radeon called the rasterizer (RS). */
 596 static void* r300_create_rs_state(struct pipe_context* pipe,
 597                                   const struct pipe_rasterizer_state* state)
 598 {
 599     struct r300_rs_state* rs = CALLOC_STRUCT(r300_rs_state);
 600
 601     /* Copy rasterizer state for Draw. */
 602     rs->rs = *state;
 603
 604     rs->enable_vte = !state->bypass_vs_clip_and_viewport;
 605
 606 #ifdef PIPE_ARCH_LITTLE_ENDIAN
 607     rs->vap_control_status = R300_VC_NO_SWAP;
 608 #else
 609     rs->vap_control_status = R300_VC_32BIT_SWAP;
 610 #endif
 611
 612     /* If bypassing TCL, or if no TCL engine is present, turn off the HW TCL.
 613      * Else, enable HW TCL and force Draw's TCL off. */
 614     if (state->bypass_vs_clip_and_viewport ||
 615             !r300_screen(pipe->screen)->caps->has_tcl) {
 616         rs->vap_control_status |= R300_VAP_TCL_BYPASS;
 617     }
 618
 619     rs->point_size = pack_float_16_6x(state->point_size) |
 620         (pack_float_16_6x(state->point_size) << R300_POINTSIZE_X_SHIFT);
 621
 622     rs->point_minmax =
 623         ((int)(state->point_size_min * 6.0) <<
 624          R300_GA_POINT_MINMAX_MIN_SHIFT) |
 625         ((int)(state->point_size_max * 6.0) <<
 626          R300_GA_POINT_MINMAX_MAX_SHIFT);
 627
 628     rs->line_control = pack_float_16_6x(state->line_width) |
 629         R300_GA_LINE_CNTL_END_TYPE_COMP;
 630
 631     /* XXX I think there is something wrong with the polygon mode,
 632      * XXX re-test when r300g is in a better shape */
 633
 634     /* Enable polygon mode */
 635     if (state->fill_cw != PIPE_POLYGON_MODE_FILL ||
 636         state->fill_ccw != PIPE_POLYGON_MODE_FILL) {
 637         rs->polygon_mode = R300_GA_POLY_MODE_DUAL;
 638     }
 639
 640     /* Radeons don't think in "CW/CCW", they think in "front/back". */
 641     if (state->front_winding == PIPE_WINDING_CW) {
 642         rs->cull_mode = R300_FRONT_FACE_CW;
 643
 644         /* Polygon offset */
 645         if (state->offset_cw) {
 646             rs->polygon_offset_enable |= R300_FRONT_ENABLE;
 647         }
 648         if (state->offset_ccw) {
 649             rs->polygon_offset_enable |= R300_BACK_ENABLE;
 650         }
 651
 652         /* Polygon mode */
 653         if (rs->polygon_mode) {
 654             rs->polygon_mode |=
 655                 r300_translate_polygon_mode_front(state->fill_cw);
 656             rs->polygon_mode |=
 657                 r300_translate_polygon_mode_back(state->fill_ccw);
 658         }
 659     } else {
 660         rs->cull_mode = R300_FRONT_FACE_CCW;
 661
 662         /* Polygon offset */
 663         if (state->offset_ccw) {
 664             rs->polygon_offset_enable |= R300_FRONT_ENABLE;
 665         }
 666         if (state->offset_cw) {
 667             rs->polygon_offset_enable |= R300_BACK_ENABLE;
 668         }
 669
 670         /* Polygon mode */
 671         if (rs->polygon_mode) {
 672             rs->polygon_mode |=
 673                 r300_translate_polygon_mode_front(state->fill_ccw);
 674             rs->polygon_mode |=
 675                 r300_translate_polygon_mode_back(state->fill_cw);
 676         }
 677     }
 678     if (state->front_winding & state->cull_mode) {
 679         rs->cull_mode |= R300_CULL_FRONT;
 680     }
 681     if (~(state->front_winding) & state->cull_mode) {
 682         rs->cull_mode |= R300_CULL_BACK;
 683     }
 684
 685     if (rs->polygon_offset_enable) {
 686         rs->depth_offset_front = rs->depth_offset_back =
 687             fui(state->offset_units);
 688         rs->depth_scale_front = rs->depth_scale_back =
 689             fui(state->offset_scale);
 690     }
 691
 692     if (state->line_stipple_enable) {
 693         rs->line_stipple_config =
 694             R300_GA_LINE_STIPPLE_CONFIG_LINE_RESET_LINE |
 695             (fui((float)state->line_stipple_factor) &
 696                 R300_GA_LINE_STIPPLE_CONFIG_STIPPLE_SCALE_MASK);
 697         /* XXX this might need to be scaled up */
 698         rs->line_stipple_value = state->line_stipple_pattern;
 699     }
 700
 701     if (state->flatshade) {
 702         rs->color_control = R300_SHADE_MODEL_FLAT;
 703     } else {
 704         rs->color_control = R300_SHADE_MODEL_SMOOTH;
 705     }
 706
 707     return (void*)rs;
 708 }
 709
 710 /* Bind rasterizer state. */
 711 static void r300_bind_rs_state(struct pipe_context* pipe, void* state)
 712 {
 713     struct r300_context* r300 = r300_context(pipe);
 714     struct r300_rs_state* rs = (struct r300_rs_state*)state;
 715
 716     if (r300->draw) {
 717         draw_flush(r300->draw);
 718         draw_set_rasterizer_state(r300->draw, &rs->rs);
 719     }
 720
 721     r300->rs_state = rs;
 722     /* XXX Clean these up when we move to atom emits */
 723     r300->dirty_state |= R300_NEW_RASTERIZER;
 724     r300->dirty_state |= R300_NEW_RS_BLOCK;
 725     r300->dirty_state |= R300_NEW_SCISSOR;
 726     r300->dirty_state |= R300_NEW_VIEWPORT;
 727     if (r300->fs && r300->fs->inputs.wpos != ATTR_UNUSED) {
 728         r300->dirty_state |= R300_NEW_FRAGMENT_SHADER_CONSTANTS;
 729     }
 730 }
 731
 732 /* Free rasterizer state. */
 733 static void r300_delete_rs_state(struct pipe_context* pipe, void* state)
 734 {
 735     FREE(state);
 736 }
 737
 738 static void*
 739         r300_create_sampler_state(struct pipe_context* pipe,
 740                                   const struct pipe_sampler_state* state)
 741 {
 742     struct r300_context* r300 = r300_context(pipe);
 743     struct r300_sampler_state* sampler = CALLOC_STRUCT(r300_sampler_state);
 744     int lod_bias;
 745     union util_color uc;
 746
 747     sampler->state = *state;
 748
 749     sampler->filter0 |=
 750         (r300_translate_wrap(state->wrap_s) << R300_TX_WRAP_S_SHIFT) |
 751         (r300_translate_wrap(state->wrap_t) << R300_TX_WRAP_T_SHIFT) |
 752         (r300_translate_wrap(state->wrap_r) << R300_TX_WRAP_R_SHIFT);
 753
 754     sampler->filter0 |= r300_translate_tex_filters(state->min_img_filter,
 755                                                    state->mag_img_filter,
 756                                                    state->min_mip_filter,
 757                                                    state->max_anisotropy > 1.0);
 758
 759     /* Unfortunately, r300-r500 don't support floating-point mipmap lods. */
 760     /* We must pass these to the emit function to clamp them properly. */
 761     sampler->min_lod = MAX2((unsigned)state->min_lod, 0);
 762     sampler->max_lod = MAX2((unsigned)ceilf(state->max_lod), 0);
 763
 764     lod_bias = CLAMP((int)(state->lod_bias * 32), -(1 << 9), (1 << 9) - 1);
 765
 766     sampler->filter1 |= lod_bias << R300_LOD_BIAS_SHIFT;
 767
 768     sampler->filter1 |= r300_anisotropy(state->max_anisotropy);
 769
 770     util_pack_color(state->border_color, PIPE_FORMAT_A8R8G8B8_UNORM, &uc);
 771     sampler->border_color = uc.ui;
 772
 773     /* R500-specific fixups and optimizations */
 774     if (r300_screen(r300->context.screen)->caps->is_r500) {
 775         sampler->filter1 |= R500_BORDER_FIX;
 776     }
 777
 778     return (void*)sampler;
 779 }
 780
 781 static void r300_bind_sampler_states(struct pipe_context* pipe,
 782                                      unsigned count,
 783                                      void** states)
 784 {
 785     struct r300_context* r300 = r300_context(pipe);
 786     int i;
 787
 788     if (count > 8) {
 789         return;
 790     }
 791
 792     for (i = 0; i < count; i++) {
 793         if (r300->sampler_states[i] != states[i]) {
 794             r300->sampler_states[i] = (struct r300_sampler_state*)states[i];
 795             r300->dirty_state |= (R300_NEW_SAMPLER << i);
 796         }
 797     }
 798
 799     r300->sampler_count = count;
 800
 801     /* Pick a fragment shader based on the texture compare state. */
 802     if (r300->fs && (r300->dirty_state & R300_ANY_NEW_SAMPLERS)) {
 803         if (r300_pick_fragment_shader(r300)) {
 804             r300->dirty_state |= R300_NEW_FRAGMENT_SHADER |
 805                                  R300_NEW_FRAGMENT_SHADER_CONSTANTS;
 806         }
 807     }
 808 }
 809
 810 static void r300_lacks_vertex_textures(struct pipe_context* pipe,
 811                                        unsigned count,
 812                                        void** states)
 813 {
 814 }
 815
 816 static void r300_delete_sampler_state(struct pipe_context* pipe, void* state)
 817 {
 818     FREE(state);
 819 }
 820
 821 static void r300_set_sampler_textures(struct pipe_context* pipe,
 822                                       unsigned count,
 823                                       struct pipe_texture** texture)
 824 {
 825     struct r300_context* r300 = r300_context(pipe);
 826     boolean is_r500 = r300_screen(r300->context.screen)->caps->is_r500;
 827     int i;
 828
 829     /* XXX magic num */
 830     if (count > 8) {
 831         return;
 832     }
 833
 834     for (i = 0; i < count; i++) {
 835         if (r300->textures[i] != (struct r300_texture*)texture[i]) {
 836             pipe_texture_reference((struct pipe_texture**)&r300->textures[i],
 837                 texture[i]);
 838             r300->dirty_state |= (R300_NEW_TEXTURE << i);
 839
 840             /* R300-specific - set the texrect factor in a fragment shader */
 841             if (!is_r500 && r300->textures[i]->is_npot) {
 842                 /* XXX It would be nice to re-emit just 1 constant,
 843                  * XXX not all of them */
 844                 r300->dirty_state |= R300_NEW_FRAGMENT_SHADER_CONSTANTS;
 845             }
 846         }
 847     }
 848
 849     for (i = count; i < 8; i++) {
 850         if (r300->textures[i]) {
 851             pipe_texture_reference((struct pipe_texture**)&r300->textures[i],
 852                 NULL);
 853             r300->dirty_state |= (R300_NEW_TEXTURE << i);
 854         }
 855     }
 856
 857     r300->texture_count = count;
 858 }
 859
 860 static void r300_set_scissor_state(struct pipe_context* pipe,
 861                                    const struct pipe_scissor_state* state)
 862 {
 863     struct r300_context* r300 = r300_context(pipe);
 864
 865     r300_set_scissor_regs(state, &r300->scissor_state->scissor,
 866                           r300_screen(r300->context.screen)->caps->is_r500);
 867
 868     /* Don't rely on the order of states being set for the first time. */
 869     if (!r300->rs_state || r300->rs_state->rs.scissor) {
 870         r300->dirty_state |= R300_NEW_SCISSOR;
 871     }
 872 }
 873
 874 static void r300_set_viewport_state(struct pipe_context* pipe,
 875                                     const struct pipe_viewport_state* state)
 876 {
 877     struct r300_context* r300 = r300_context(pipe);
 878
 879     /* Do the transform in HW. */
 880     r300->viewport_state->vte_control = R300_VTX_W0_FMT;
 881
 882     if (state->scale[0] != 1.0f) {
 883         r300->viewport_state->xscale = state->scale[0];
 884         r300->viewport_state->vte_control |= R300_VPORT_X_SCALE_ENA;
 885     }
 886     if (state->scale[1] != 1.0f) {
 887         r300->viewport_state->yscale = state->scale[1];
 888         r300->viewport_state->vte_control |= R300_VPORT_Y_SCALE_ENA;
 889     }
 890     if (state->scale[2] != 1.0f) {
 891         r300->viewport_state->zscale = state->scale[2];
 892         r300->viewport_state->vte_control |= R300_VPORT_Z_SCALE_ENA;
 893     }
 894     if (state->translate[0] != 0.0f) {
 895         r300->viewport_state->xoffset = state->translate[0];
 896         r300->viewport_state->vte_control |= R300_VPORT_X_OFFSET_ENA;
 897     }
 898     if (state->translate[1] != 0.0f) {
 899         r300->viewport_state->yoffset = state->translate[1];
 900         r300->viewport_state->vte_control |= R300_VPORT_Y_OFFSET_ENA;
 901     }
 902     if (state->translate[2] != 0.0f) {
 903         r300->viewport_state->zoffset = state->translate[2];
 904         r300->viewport_state->vte_control |= R300_VPORT_Z_OFFSET_ENA;
 905     }
 906
 907     r300->dirty_state |= R300_NEW_VIEWPORT;
 908     if (r300->fs && r300->fs->inputs.wpos != ATTR_UNUSED) {
 909         r300->dirty_state |= R300_NEW_FRAGMENT_SHADER_CONSTANTS;
 910     }
 911 }
 912
 913 static void r300_set_vertex_buffers(struct pipe_context* pipe,
 914                                     unsigned count,
 915                                     const struct pipe_vertex_buffer* buffers)
 916 {
 917     struct r300_context* r300 = r300_context(pipe);
 918
 919     memcpy(r300->vertex_buffer, buffers,
 920         sizeof(struct pipe_vertex_buffer) * count);
 921     r300->vertex_buffer_count = count;
 922
 923     if (r300->draw) {
 924         draw_flush(r300->draw);
 925         draw_set_vertex_buffers(r300->draw, count, buffers);
 926     }
 927
 928     r300->dirty_state |= R300_NEW_VERTEX_FORMAT;
 929 }
 930
 931 static void r300_set_vertex_elements(struct pipe_context* pipe,
 932                                     unsigned count,
 933                                     const struct pipe_vertex_element* elements)
 934 {
 935     struct r300_context* r300 = r300_context(pipe);
 936
 937     memcpy(r300->vertex_element,
 938            elements,
 939            sizeof(struct pipe_vertex_element) * count);
 940     r300->vertex_element_count = count;
 941
 942     if (r300->draw) {
 943         draw_flush(r300->draw);
 944         draw_set_vertex_elements(r300->draw, count, elements);
 945     }
 946 }
 947
 948 static void* r300_create_vs_state(struct pipe_context* pipe,
 949                                   const struct pipe_shader_state* shader)
 950 {
 951     struct r300_context* r300 = r300_context(pipe);
 952
 953     if (r300_screen(pipe->screen)->caps->has_tcl) {
 954         struct r300_vertex_shader* vs = CALLOC_STRUCT(r300_vertex_shader);
 955         /* Copy state directly into shader. */
 956         vs->state = *shader;
 957         vs->state.tokens = tgsi_dup_tokens(shader->tokens);
 958
 959         tgsi_scan_shader(shader->tokens, &vs->info);
 960
 961         return (void*)vs;
 962     } else {
 963         return draw_create_vertex_shader(r300->draw, shader);
 964     }
 965 }
 966
 967 static void r300_bind_vs_state(struct pipe_context* pipe, void* shader)
 968 {
 969     struct r300_context* r300 = r300_context(pipe);
 970
 971     if (r300_screen(pipe->screen)->caps->has_tcl) {
 972         struct r300_vertex_shader* vs = (struct r300_vertex_shader*)shader;
 973
 974         if (vs == NULL) {
 975             r300->vs = NULL;
 976             return;
 977         } else if (!vs->translated) {
 978             r300_translate_vertex_shader(r300, vs);
 979         }
 980
 981         r300->vs = vs;
 982         if (r300->fs) {
 983             r300_vertex_shader_setup_wpos(r300);
 984         }
 985
 986         r300->dirty_state |=
 987             R300_NEW_VERTEX_SHADER | R300_NEW_VERTEX_SHADER_CONSTANTS |
 988             R300_NEW_VERTEX_FORMAT;
 989     } else {
 990         draw_flush(r300->draw);
 991         draw_bind_vertex_shader(r300->draw,
 992                 (struct draw_vertex_shader*)shader);
 993     }
 994 }
 995
 996 static void r300_delete_vs_state(struct pipe_context* pipe, void* shader)
 997 {
 998     struct r300_context* r300 = r300_context(pipe);
 999
1000     if (r300_screen(pipe->screen)->caps->has_tcl) {
1001         struct r300_vertex_shader* vs = (struct r300_vertex_shader*)shader;
1002
1003         rc_constants_destroy(&vs->code.constants);
1004         FREE((void*)vs->state.tokens);
1005         FREE(shader);
1006     } else {
1007         draw_delete_vertex_shader(r300->draw,
1008                 (struct draw_vertex_shader*)shader);
1009     }
1010 }
1011
1012 static void r300_set_constant_buffer(struct pipe_context *pipe,
1013                                      uint shader, uint index,
1014                                      const struct pipe_constant_buffer *buf)
1015 {
1016     struct r300_context* r300 = r300_context(pipe);
1017     void *mapped;
1018
1019     if (buf == NULL || buf->buffer->size == 0 ||
1020         (mapped = pipe_buffer_map(pipe->screen, buf->buffer, PIPE_BUFFER_USAGE_CPU_READ)) == NULL)
1021     {
1022         r300->shader_constants[shader].count = 0;
1023         return;
1024     }
1025
1026     assert((buf->buffer->size % 4 * sizeof(float)) == 0);
1027     memcpy(r300->shader_constants[shader].constants, mapped, buf->buffer->size);
1028     r300->shader_constants[shader].count = buf->buffer->size / (4 * sizeof(float));
1029     pipe_buffer_unmap(pipe->screen, buf->buffer);
1030
1031     if (shader == PIPE_SHADER_VERTEX)
1032         r300->dirty_state |= R300_NEW_VERTEX_SHADER_CONSTANTS;
1033     else if (shader == PIPE_SHADER_FRAGMENT)
1034         r300->dirty_state |= R300_NEW_FRAGMENT_SHADER_CONSTANTS;
1035 }
1036
1037 void r300_init_state_functions(struct r300_context* r300)
1038 {
1039     r300->context.create_blend_state = r300_create_blend_state;
1040     r300->context.bind_blend_state = r300_bind_blend_state;
1041     r300->context.delete_blend_state = r300_delete_blend_state;
1042
1043     r300->context.set_blend_color = r300_set_blend_color;
1044
1045     r300->context.set_clip_state = r300_set_clip_state;
1046
1047     r300->context.set_constant_buffer = r300_set_constant_buffer;
1048
1049     r300->context.create_depth_stencil_alpha_state = r300_create_dsa_state;
1050     r300->context.bind_depth_stencil_alpha_state = r300_bind_dsa_state;
1051     r300->context.delete_depth_stencil_alpha_state = r300_delete_dsa_state;
1052
1053     r300->context.set_framebuffer_state = r300_set_framebuffer_state;
1054
1055     r300->context.create_fs_state = r300_create_fs_state;
1056     r300->context.bind_fs_state = r300_bind_fs_state;
1057     r300->context.delete_fs_state = r300_delete_fs_state;
1058
1059     r300->context.set_polygon_stipple = r300_set_polygon_stipple;
1060
1061     r300->context.create_rasterizer_state = r300_create_rs_state;
1062     r300->context.bind_rasterizer_state = r300_bind_rs_state;
1063     r300->context.delete_rasterizer_state = r300_delete_rs_state;
1064
1065     r300->context.create_sampler_state = r300_create_sampler_state;
1066     r300->context.bind_fragment_sampler_states = r300_bind_sampler_states;
1067     r300->context.bind_vertex_sampler_states = r300_lacks_vertex_textures;
1068     r300->context.delete_sampler_state = r300_delete_sampler_state;
1069
1070     r300->context.set_fragment_sampler_textures = r300_set_sampler_textures;
1071
1072     r300->context.set_scissor_state = r300_set_scissor_state;
1073
1074     r300->context.set_viewport_state = r300_set_viewport_state;
1075
1076     r300->context.set_vertex_buffers = r300_set_vertex_buffers;
1077     r300->context.set_vertex_elements = r300_set_vertex_elements;
1078
1079     r300->context.create_vs_state = r300_create_vs_state;
1080     r300->context.bind_vs_state = r300_bind_vs_state;
1081     r300->context.delete_vs_state = r300_delete_vs_state;
1082 }