r300_state.c revision bf60eb3fec844a7c3793aba0c70da56b74a17344
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 45static 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 66static 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 85static 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 100static 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 115static 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 138static 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. */ 162static 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. */ 315static 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. */ 325static void r300_delete_blend_state(struct pipe_context* pipe, 326 void* state) 327{ 328 FREE(state); 329} 330 331/* Convert float to 10bit integer */ 332static 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. */ 339static 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 359static 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. */ 378static 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. */ 459static 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. */ 469static void r300_delete_dsa_state(struct pipe_context* pipe, 470 void* state) 471{ 472 FREE(state); 473} 474 475static 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 500static 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} 526 527/* Create fragment shader state. */ 528static void* r300_create_fs_state(struct pipe_context* pipe, 529 const struct pipe_shader_state* shader) 530{ 531 struct r300_fragment_shader* fs = NULL; 532 533 fs = (struct r300_fragment_shader*)CALLOC_STRUCT(r300_fragment_shader); 534 535 /* Copy state directly into shader. */ 536 fs->state = *shader; 537 fs->state.tokens = tgsi_dup_tokens(shader->tokens); 538 539 tgsi_scan_shader(shader->tokens, &fs->info); 540 r300_shader_read_fs_inputs(&fs->info, &fs->inputs); 541 542 return (void*)fs; 543} 544 545/* Bind fragment shader state. */ 546static void r300_bind_fs_state(struct pipe_context* pipe, void* shader) 547{ 548 struct r300_context* r300 = r300_context(pipe); 549 struct r300_fragment_shader* fs = (struct r300_fragment_shader*)shader; 550 551 if (fs == NULL) { 552 r300->fs = NULL; 553 return; 554 } 555 556 r300->fs = fs; 557 r300_pick_fragment_shader(r300); 558 559 r300->dirty_state |= R300_NEW_FRAGMENT_SHADER | R300_NEW_FRAGMENT_SHADER_CONSTANTS; 560} 561 562/* Delete fragment shader state. */ 563static void r300_delete_fs_state(struct pipe_context* pipe, void* shader) 564{ 565 struct r300_fragment_shader* fs = (struct r300_fragment_shader*)shader; 566 struct r300_fragment_shader_code *tmp, *ptr = fs->first; 567 568 while (ptr) { 569 tmp = ptr; 570 ptr = ptr->next; 571 rc_constants_destroy(&tmp->code.constants); 572 FREE(tmp); 573 } 574 FREE((void*)fs->state.tokens); 575 FREE(shader); 576} 577 578static void r300_set_polygon_stipple(struct pipe_context* pipe, 579 const struct pipe_poly_stipple* state) 580{ 581 /* XXX no idea how to set this up, but not terribly important */ 582} 583 584/* Create a new rasterizer state based on the CSO rasterizer state. 585 * 586 * This is a very large chunk of state, and covers most of the graphics 587 * backend (GB), geometry assembly (GA), and setup unit (SU) blocks. 588 * 589 * In a not entirely unironic sidenote, this state has nearly nothing to do 590 * with the actual block on the Radeon called the rasterizer (RS). */ 591static void* r300_create_rs_state(struct pipe_context* pipe, 592 const struct pipe_rasterizer_state* state) 593{ 594 struct r300_rs_state* rs = CALLOC_STRUCT(r300_rs_state); 595 596 /* Copy rasterizer state for Draw. */ 597 rs->rs = *state; 598 599 rs->enable_vte = !state->bypass_vs_clip_and_viewport; 600 601#ifdef PIPE_ARCH_LITTLE_ENDIAN 602 rs->vap_control_status = R300_VC_NO_SWAP; 603#else 604 rs->vap_control_status = R300_VC_32BIT_SWAP; 605#endif 606 607 /* If bypassing TCL, or if no TCL engine is present, turn off the HW TCL. 608 * Else, enable HW TCL and force Draw's TCL off. */ 609 if (state->bypass_vs_clip_and_viewport || 610 !r300_screen(pipe->screen)->caps->has_tcl) { 611 rs->vap_control_status |= R300_VAP_TCL_BYPASS; 612 } 613 614 rs->point_size = pack_float_16_6x(state->point_size) | 615 (pack_float_16_6x(state->point_size) << R300_POINTSIZE_X_SHIFT); 616 617 rs->point_minmax = 618 ((int)(state->point_size_min * 6.0) << 619 R300_GA_POINT_MINMAX_MIN_SHIFT) | 620 ((int)(state->point_size_max * 6.0) << 621 R300_GA_POINT_MINMAX_MAX_SHIFT); 622 623 rs->line_control = pack_float_16_6x(state->line_width) | 624 R300_GA_LINE_CNTL_END_TYPE_COMP; 625 626 /* XXX I think there is something wrong with the polygon mode, 627 * XXX re-test when r300g is in a better shape */ 628 629 /* Enable polygon mode */ 630 if (state->fill_cw != PIPE_POLYGON_MODE_FILL || 631 state->fill_ccw != PIPE_POLYGON_MODE_FILL) { 632 rs->polygon_mode = R300_GA_POLY_MODE_DUAL; 633 } 634 635 /* Radeons don't think in "CW/CCW", they think in "front/back". */ 636 if (state->front_winding == PIPE_WINDING_CW) { 637 rs->cull_mode = R300_FRONT_FACE_CW; 638 639 /* Polygon offset */ 640 if (state->offset_cw) { 641 rs->polygon_offset_enable |= R300_FRONT_ENABLE; 642 } 643 if (state->offset_ccw) { 644 rs->polygon_offset_enable |= R300_BACK_ENABLE; 645 } 646 647 /* Polygon mode */ 648 if (rs->polygon_mode) { 649 rs->polygon_mode |= 650 r300_translate_polygon_mode_front(state->fill_cw); 651 rs->polygon_mode |= 652 r300_translate_polygon_mode_back(state->fill_ccw); 653 } 654 } else { 655 rs->cull_mode = R300_FRONT_FACE_CCW; 656 657 /* Polygon offset */ 658 if (state->offset_ccw) { 659 rs->polygon_offset_enable |= R300_FRONT_ENABLE; 660 } 661 if (state->offset_cw) { 662 rs->polygon_offset_enable |= R300_BACK_ENABLE; 663 } 664 665 /* Polygon mode */ 666 if (rs->polygon_mode) { 667 rs->polygon_mode |= 668 r300_translate_polygon_mode_front(state->fill_ccw); 669 rs->polygon_mode |= 670 r300_translate_polygon_mode_back(state->fill_cw); 671 } 672 } 673 if (state->front_winding & state->cull_mode) { 674 rs->cull_mode |= R300_CULL_FRONT; 675 } 676 if (~(state->front_winding) & state->cull_mode) { 677 rs->cull_mode |= R300_CULL_BACK; 678 } 679 680 if (rs->polygon_offset_enable) { 681 rs->depth_offset_front = rs->depth_offset_back = 682 fui(state->offset_units); 683 rs->depth_scale_front = rs->depth_scale_back = 684 fui(state->offset_scale); 685 } 686 687 if (state->line_stipple_enable) { 688 rs->line_stipple_config = 689 R300_GA_LINE_STIPPLE_CONFIG_LINE_RESET_LINE | 690 (fui((float)state->line_stipple_factor) & 691 R300_GA_LINE_STIPPLE_CONFIG_STIPPLE_SCALE_MASK); 692 /* XXX this might need to be scaled up */ 693 rs->line_stipple_value = state->line_stipple_pattern; 694 } 695 696 if (state->flatshade) { 697 rs->color_control = R300_SHADE_MODEL_FLAT; 698 } else { 699 rs->color_control = R300_SHADE_MODEL_SMOOTH; 700 } 701 702 return (void*)rs; 703} 704 705/* Bind rasterizer state. */ 706static void r300_bind_rs_state(struct pipe_context* pipe, void* state) 707{ 708 struct r300_context* r300 = r300_context(pipe); 709 struct r300_rs_state* rs = (struct r300_rs_state*)state; 710 711 if (r300->draw) { 712 draw_flush(r300->draw); 713 draw_set_rasterizer_state(r300->draw, &rs->rs); 714 } 715 716 r300->rs_state = rs; 717 /* XXX Clean these up when we move to atom emits */ 718 r300->dirty_state |= R300_NEW_RASTERIZER; 719 r300->dirty_state |= R300_NEW_RS_BLOCK; 720 r300->dirty_state |= R300_NEW_SCISSOR; 721 r300->dirty_state |= R300_NEW_VIEWPORT; 722 if (r300->fs && r300->fs->inputs.wpos != ATTR_UNUSED) { 723 r300->dirty_state |= R300_NEW_FRAGMENT_SHADER_CONSTANTS; 724 } 725} 726 727/* Free rasterizer state. */ 728static void r300_delete_rs_state(struct pipe_context* pipe, void* state) 729{ 730 FREE(state); 731} 732 733static void* 734 r300_create_sampler_state(struct pipe_context* pipe, 735 const struct pipe_sampler_state* state) 736{ 737 struct r300_context* r300 = r300_context(pipe); 738 struct r300_sampler_state* sampler = CALLOC_STRUCT(r300_sampler_state); 739 int lod_bias; 740 union util_color uc; 741 742 sampler->state = *state; 743 744 sampler->filter0 |= 745 (r300_translate_wrap(state->wrap_s) << R300_TX_WRAP_S_SHIFT) | 746 (r300_translate_wrap(state->wrap_t) << R300_TX_WRAP_T_SHIFT) | 747 (r300_translate_wrap(state->wrap_r) << R300_TX_WRAP_R_SHIFT); 748 749 sampler->filter0 |= r300_translate_tex_filters(state->min_img_filter, 750 state->mag_img_filter, 751 state->min_mip_filter, 752 state->max_anisotropy > 1.0); 753 754 /* Unfortunately, r300-r500 don't support floating-point mipmap lods. */ 755 /* We must pass these to the emit function to clamp them properly. */ 756 sampler->min_lod = MAX2((unsigned)state->min_lod, 0); 757 sampler->max_lod = MAX2((unsigned)ceilf(state->max_lod), 0); 758 759 lod_bias = CLAMP((int)(state->lod_bias * 32), -(1 << 9), (1 << 9) - 1); 760 761 sampler->filter1 |= lod_bias << R300_LOD_BIAS_SHIFT; 762 763 sampler->filter1 |= r300_anisotropy(state->max_anisotropy); 764 765 util_pack_color(state->border_color, PIPE_FORMAT_A8R8G8B8_UNORM, &uc); 766 sampler->border_color = uc.ui; 767 768 /* R500-specific fixups and optimizations */ 769 if (r300_screen(r300->context.screen)->caps->is_r500) { 770 sampler->filter1 |= R500_BORDER_FIX; 771 } 772 773 return (void*)sampler; 774} 775 776static void r300_bind_sampler_states(struct pipe_context* pipe, 777 unsigned count, 778 void** states) 779{ 780 struct r300_context* r300 = r300_context(pipe); 781 int i; 782 783 if (count > 8) { 784 return; 785 } 786 787 for (i = 0; i < count; i++) { 788 if (r300->sampler_states[i] != states[i]) { 789 r300->sampler_states[i] = (struct r300_sampler_state*)states[i]; 790 r300->dirty_state |= (R300_NEW_SAMPLER << i); 791 } 792 } 793 794 r300->sampler_count = count; 795 796 /* Pick a fragment shader based on the texture compare state. */ 797 if (r300->fs && (r300->dirty_state & R300_ANY_NEW_SAMPLERS)) { 798 if (r300_pick_fragment_shader(r300)) { 799 r300->dirty_state |= R300_NEW_FRAGMENT_SHADER | 800 R300_NEW_FRAGMENT_SHADER_CONSTANTS; 801 } 802 } 803} 804 805static void r300_lacks_vertex_textures(struct pipe_context* pipe, 806 unsigned count, 807 void** states) 808{ 809} 810 811static void r300_delete_sampler_state(struct pipe_context* pipe, void* state) 812{ 813 FREE(state); 814} 815 816static void r300_set_sampler_textures(struct pipe_context* pipe, 817 unsigned count, 818 struct pipe_texture** texture) 819{ 820 struct r300_context* r300 = r300_context(pipe); 821 boolean is_r500 = r300_screen(r300->context.screen)->caps->is_r500; 822 int i; 823 824 /* XXX magic num */ 825 if (count > 8) { 826 return; 827 } 828 829 for (i = 0; i < count; i++) { 830 if (r300->textures[i] != (struct r300_texture*)texture[i]) { 831 pipe_texture_reference((struct pipe_texture**)&r300->textures[i], 832 texture[i]); 833 r300->dirty_state |= (R300_NEW_TEXTURE << i); 834 835 /* R300-specific - set the texrect factor in a fragment shader */ 836 if (!is_r500 && r300->textures[i]->is_npot) { 837 /* XXX It would be nice to re-emit just 1 constant, 838 * XXX not all of them */ 839 r300->dirty_state |= R300_NEW_FRAGMENT_SHADER_CONSTANTS; 840 } 841 } 842 } 843 844 for (i = count; i < 8; i++) { 845 if (r300->textures[i]) { 846 pipe_texture_reference((struct pipe_texture**)&r300->textures[i], 847 NULL); 848 r300->dirty_state |= (R300_NEW_TEXTURE << i); 849 } 850 } 851 852 r300->texture_count = count; 853} 854 855static void r300_set_scissor_state(struct pipe_context* pipe, 856 const struct pipe_scissor_state* state) 857{ 858 struct r300_context* r300 = r300_context(pipe); 859 860 r300_set_scissor_regs(state, &r300->scissor_state->scissor, 861 r300_screen(r300->context.screen)->caps->is_r500); 862 863 /* Don't rely on the order of states being set for the first time. */ 864 if (!r300->rs_state || r300->rs_state->rs.scissor) { 865 r300->dirty_state |= R300_NEW_SCISSOR; 866 } 867} 868 869static void r300_set_viewport_state(struct pipe_context* pipe, 870 const struct pipe_viewport_state* state) 871{ 872 struct r300_context* r300 = r300_context(pipe); 873 874 /* Do the transform in HW. */ 875 r300->viewport_state->vte_control = R300_VTX_W0_FMT; 876 877 if (state->scale[0] != 1.0f) { 878 r300->viewport_state->xscale = state->scale[0]; 879 r300->viewport_state->vte_control |= R300_VPORT_X_SCALE_ENA; 880 } 881 if (state->scale[1] != 1.0f) { 882 r300->viewport_state->yscale = state->scale[1]; 883 r300->viewport_state->vte_control |= R300_VPORT_Y_SCALE_ENA; 884 } 885 if (state->scale[2] != 1.0f) { 886 r300->viewport_state->zscale = state->scale[2]; 887 r300->viewport_state->vte_control |= R300_VPORT_Z_SCALE_ENA; 888 } 889 if (state->translate[0] != 0.0f) { 890 r300->viewport_state->xoffset = state->translate[0]; 891 r300->viewport_state->vte_control |= R300_VPORT_X_OFFSET_ENA; 892 } 893 if (state->translate[1] != 0.0f) { 894 r300->viewport_state->yoffset = state->translate[1]; 895 r300->viewport_state->vte_control |= R300_VPORT_Y_OFFSET_ENA; 896 } 897 if (state->translate[2] != 0.0f) { 898 r300->viewport_state->zoffset = state->translate[2]; 899 r300->viewport_state->vte_control |= R300_VPORT_Z_OFFSET_ENA; 900 } 901 902 r300->dirty_state |= R300_NEW_VIEWPORT; 903 if (r300->fs && r300->fs->inputs.wpos != ATTR_UNUSED) { 904 r300->dirty_state |= R300_NEW_FRAGMENT_SHADER_CONSTANTS; 905 } 906} 907 908static void r300_set_vertex_buffers(struct pipe_context* pipe, 909 unsigned count, 910 const struct pipe_vertex_buffer* buffers) 911{ 912 struct r300_context* r300 = r300_context(pipe); 913 914 memcpy(r300->vertex_buffer, buffers, 915 sizeof(struct pipe_vertex_buffer) * count); 916 r300->vertex_buffer_count = count; 917 918 if (r300->draw) { 919 draw_flush(r300->draw); 920 draw_set_vertex_buffers(r300->draw, count, buffers); 921 } 922 923 r300->dirty_state |= R300_NEW_VERTEX_FORMAT; 924} 925 926static void r300_set_vertex_elements(struct pipe_context* pipe, 927 unsigned count, 928 const struct pipe_vertex_element* elements) 929{ 930 struct r300_context* r300 = r300_context(pipe); 931 932 memcpy(r300->vertex_element, 933 elements, 934 sizeof(struct pipe_vertex_element) * count); 935 r300->vertex_element_count = count; 936 937 if (r300->draw) { 938 draw_flush(r300->draw); 939 draw_set_vertex_elements(r300->draw, count, elements); 940 } 941} 942 943static void* r300_create_vs_state(struct pipe_context* pipe, 944 const struct pipe_shader_state* shader) 945{ 946 struct r300_context* r300 = r300_context(pipe); 947 948 if (r300_screen(pipe->screen)->caps->has_tcl) { 949 struct r300_vertex_shader* vs = CALLOC_STRUCT(r300_vertex_shader); 950 /* Copy state directly into shader. */ 951 vs->state = *shader; 952 vs->state.tokens = tgsi_dup_tokens(shader->tokens); 953 954 tgsi_scan_shader(shader->tokens, &vs->info); 955 956 return (void*)vs; 957 } else { 958 return draw_create_vertex_shader(r300->draw, shader); 959 } 960} 961 962static void r300_bind_vs_state(struct pipe_context* pipe, void* shader) 963{ 964 struct r300_context* r300 = r300_context(pipe); 965 966 if (r300_screen(pipe->screen)->caps->has_tcl) { 967 struct r300_vertex_shader* vs = (struct r300_vertex_shader*)shader; 968 969 if (vs == NULL) { 970 r300->vs = NULL; 971 return; 972 } else if (!vs->translated) { 973 r300_translate_vertex_shader(r300, vs); 974 } 975 976 r300->vs = vs; 977 r300->dirty_state |= R300_NEW_VERTEX_SHADER | R300_NEW_VERTEX_SHADER_CONSTANTS; 978 } else { 979 draw_flush(r300->draw); 980 draw_bind_vertex_shader(r300->draw, 981 (struct draw_vertex_shader*)shader); 982 } 983} 984 985static void r300_delete_vs_state(struct pipe_context* pipe, void* shader) 986{ 987 struct r300_context* r300 = r300_context(pipe); 988 989 if (r300_screen(pipe->screen)->caps->has_tcl) { 990 struct r300_vertex_shader* vs = (struct r300_vertex_shader*)shader; 991 992 rc_constants_destroy(&vs->code.constants); 993 FREE((void*)vs->state.tokens); 994 FREE(shader); 995 } else { 996 draw_delete_vertex_shader(r300->draw, 997 (struct draw_vertex_shader*)shader); 998 } 999} 1000 1001static void r300_set_constant_buffer(struct pipe_context *pipe, 1002 uint shader, uint index, 1003 const struct pipe_constant_buffer *buf) 1004{ 1005 struct r300_context* r300 = r300_context(pipe); 1006 void *mapped; 1007 1008 if (buf == NULL || buf->buffer->size == 0 || 1009 (mapped = pipe_buffer_map(pipe->screen, buf->buffer, PIPE_BUFFER_USAGE_CPU_READ)) == NULL) 1010 { 1011 r300->shader_constants[shader].count = 0; 1012 return; 1013 } 1014 1015 assert((buf->buffer->size % 4 * sizeof(float)) == 0); 1016 memcpy(r300->shader_constants[shader].constants, mapped, buf->buffer->size); 1017 r300->shader_constants[shader].count = buf->buffer->size / (4 * sizeof(float)); 1018 pipe_buffer_unmap(pipe->screen, buf->buffer); 1019 1020 if (shader == PIPE_SHADER_VERTEX) 1021 r300->dirty_state |= R300_NEW_VERTEX_SHADER_CONSTANTS; 1022 else if (shader == PIPE_SHADER_FRAGMENT) 1023 r300->dirty_state |= R300_NEW_FRAGMENT_SHADER_CONSTANTS; 1024} 1025 1026void r300_init_state_functions(struct r300_context* r300) 1027{ 1028 r300->context.create_blend_state = r300_create_blend_state; 1029 r300->context.bind_blend_state = r300_bind_blend_state; 1030 r300->context.delete_blend_state = r300_delete_blend_state; 1031 1032 r300->context.set_blend_color = r300_set_blend_color; 1033 1034 r300->context.set_clip_state = r300_set_clip_state; 1035 1036 r300->context.set_constant_buffer = r300_set_constant_buffer; 1037 1038 r300->context.create_depth_stencil_alpha_state = r300_create_dsa_state; 1039 r300->context.bind_depth_stencil_alpha_state = r300_bind_dsa_state; 1040 r300->context.delete_depth_stencil_alpha_state = r300_delete_dsa_state; 1041 1042 r300->context.set_framebuffer_state = r300_set_framebuffer_state; 1043 1044 r300->context.create_fs_state = r300_create_fs_state; 1045 r300->context.bind_fs_state = r300_bind_fs_state; 1046 r300->context.delete_fs_state = r300_delete_fs_state; 1047 1048 r300->context.set_polygon_stipple = r300_set_polygon_stipple; 1049 1050 r300->context.create_rasterizer_state = r300_create_rs_state; 1051 r300->context.bind_rasterizer_state = r300_bind_rs_state; 1052 r300->context.delete_rasterizer_state = r300_delete_rs_state; 1053 1054 r300->context.create_sampler_state = r300_create_sampler_state; 1055 r300->context.bind_fragment_sampler_states = r300_bind_sampler_states; 1056 r300->context.bind_vertex_sampler_states = r300_lacks_vertex_textures; 1057 r300->context.delete_sampler_state = r300_delete_sampler_state; 1058 1059 r300->context.set_fragment_sampler_textures = r300_set_sampler_textures; 1060 1061 r300->context.set_scissor_state = r300_set_scissor_state; 1062 1063 r300->context.set_viewport_state = r300_set_viewport_state; 1064 1065 r300->context.set_vertex_buffers = r300_set_vertex_buffers; 1066 r300->context.set_vertex_elements = r300_set_vertex_elements; 1067 1068 r300->context.create_vs_state = r300_create_vs_state; 1069 r300->context.bind_vs_state = r300_bind_vs_state; 1070 r300->context.delete_vs_state = r300_delete_vs_state; 1071} 1072