1 /* 2 * Copyright (C) 2018 Alyssa Rosenzweig 3 * Copyright (C) 2019-2021 Collabora, Ltd. 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 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 9 * and/or sell copies of the Software, and to permit persons to whom the 10 * 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 NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 22 * SOFTWARE. 23 */ 24 25 #include "pan_blend.h" 26 27 #ifdef PAN_ARCH 28 #include "pan_shader.h" 29 #endif 30 31 #include "pan_texture.h" 32 #include "panfrost/util/pan_lower_framebuffer.h" 33 #include "util/format/u_format.h" 34 #include "compiler/nir/nir.h" 35 #include "compiler/nir/nir_builder.h" 36 #include "compiler/nir/nir_conversion_builder.h" 37 #include "compiler/nir/nir_lower_blend.h" 38 39 #ifndef PAN_ARCH 40 41 /* Fixed function blending */ 42 43 static bool 44 factor_is_supported(enum blend_factor factor) 45 { 46 return factor != BLEND_FACTOR_SRC_ALPHA_SATURATE && 47 factor != BLEND_FACTOR_SRC1_COLOR && 48 factor != BLEND_FACTOR_SRC1_ALPHA; 49 } 50 51 /* OpenGL allows encoding (src*dest + dest*src) which is incompatiblle with 52 * Midgard style blending since there are two multiplies. However, it may be 53 * factored as 2*src*dest = dest*(2*src), which can be encoded on Bifrost as 0 54 * + dest * (2*src) wih the new source_2 value of C. Detect this case. */ 55 56 static bool 57 is_2srcdest(enum blend_func blend_func, 58 enum blend_factor src_factor, 59 bool invert_src, 60 enum blend_factor dest_factor, 61 bool invert_dest, 62 bool is_alpha) 63 { 64 return (blend_func == BLEND_FUNC_ADD) && 65 ((src_factor == BLEND_FACTOR_DST_COLOR) || 66 ((src_factor == BLEND_FACTOR_DST_ALPHA) && is_alpha)) && 67 ((dest_factor == BLEND_FACTOR_SRC_COLOR) || 68 ((dest_factor == BLEND_FACTOR_SRC_ALPHA) && is_alpha)) && 69 !invert_src && !invert_dest; 70 } 71 72 static bool 73 can_fixed_function_equation(enum blend_func blend_func, 74 enum blend_factor src_factor, 75 bool invert_src, 76 enum blend_factor dest_factor, 77 bool invert_dest, 78 bool is_alpha, 79 bool supports_2src) 80 { 81 if (is_2srcdest(blend_func, src_factor, invert_src, 82 dest_factor, invert_dest, is_alpha)) { 83 84 return supports_2src; 85 } 86 87 if (blend_func != BLEND_FUNC_ADD && 88 blend_func != BLEND_FUNC_SUBTRACT && 89 blend_func != BLEND_FUNC_REVERSE_SUBTRACT) 90 return false; 91 92 if (!factor_is_supported(src_factor) || 93 !factor_is_supported(dest_factor)) 94 return false; 95 96 if (src_factor != dest_factor && 97 src_factor != BLEND_FACTOR_ZERO && 98 dest_factor != BLEND_FACTOR_ZERO) 99 return false; 100 101 return true; 102 } 103 104 static unsigned 105 blend_factor_constant_mask(enum blend_factor factor) 106 { 107 if (factor == BLEND_FACTOR_CONSTANT_COLOR) 108 return 0b0111; /* RGB */ 109 else if (factor == BLEND_FACTOR_CONSTANT_ALPHA) 110 return 0b1000; /* A */ 111 else 112 return 0b0000; /* - */ 113 } 114 115 unsigned 116 pan_blend_constant_mask(const struct pan_blend_equation eq) 117 { 118 return blend_factor_constant_mask(eq.rgb_src_factor) | 119 blend_factor_constant_mask(eq.rgb_dst_factor) | 120 blend_factor_constant_mask(eq.alpha_src_factor) | 121 blend_factor_constant_mask(eq.alpha_dst_factor); 122 } 123 124 /* Only "homogenous" (scalar or vector with all components equal) constants are 125 * valid for fixed-function, so check for this condition */ 126 127 bool 128 pan_blend_is_homogenous_constant(unsigned mask, const float *constants) 129 { 130 float constant = pan_blend_get_constant(mask, constants); 131 132 u_foreach_bit(i, mask) { 133 if (constants[i] != constant) 134 return false; 135 } 136 137 return true; 138 } 139 140 /* Determines if an equation can run in fixed function */ 141 142 bool 143 pan_blend_can_fixed_function(const struct pan_blend_equation equation, 144 bool supports_2src) 145 { 146 return !equation.blend_enable || 147 (can_fixed_function_equation(equation.rgb_func, 148 equation.rgb_src_factor, 149 equation.rgb_invert_src_factor, 150 equation.rgb_dst_factor, 151 equation.rgb_invert_dst_factor, 152 false, supports_2src) && 153 can_fixed_function_equation(equation.alpha_func, 154 equation.alpha_src_factor, 155 equation.alpha_invert_src_factor, 156 equation.alpha_dst_factor, 157 equation.alpha_invert_dst_factor, 158 true, supports_2src)); 159 } 160 161 static enum mali_blend_operand_c 162 to_c_factor(enum blend_factor factor) 163 { 164 switch (factor) { 165 case BLEND_FACTOR_ZERO: 166 return MALI_BLEND_OPERAND_C_ZERO; 167 168 case BLEND_FACTOR_SRC_ALPHA: 169 return MALI_BLEND_OPERAND_C_SRC_ALPHA; 170 171 case BLEND_FACTOR_DST_ALPHA: 172 return MALI_BLEND_OPERAND_C_DEST_ALPHA; 173 174 case BLEND_FACTOR_SRC_COLOR: 175 return MALI_BLEND_OPERAND_C_SRC; 176 177 case BLEND_FACTOR_DST_COLOR: 178 return MALI_BLEND_OPERAND_C_DEST; 179 180 case BLEND_FACTOR_CONSTANT_COLOR: 181 case BLEND_FACTOR_CONSTANT_ALPHA: 182 return MALI_BLEND_OPERAND_C_CONSTANT; 183 184 default: 185 unreachable("Unsupported blend factor"); 186 } 187 } 188 189 static void 190 to_panfrost_function(enum blend_func blend_func, 191 enum blend_factor src_factor, 192 bool invert_src, 193 enum blend_factor dest_factor, 194 bool invert_dest, 195 bool is_alpha, 196 struct MALI_BLEND_FUNCTION *function) 197 { 198 assert(can_fixed_function_equation(blend_func, src_factor, invert_src, 199 dest_factor, invert_dest, is_alpha, true)); 200 201 if (src_factor == BLEND_FACTOR_ZERO && !invert_src) { 202 function->a = MALI_BLEND_OPERAND_A_ZERO; 203 function->b = MALI_BLEND_OPERAND_B_DEST; 204 if (blend_func == BLEND_FUNC_SUBTRACT) 205 function->negate_b = true; 206 function->invert_c = invert_dest; 207 function->c = to_c_factor(dest_factor); 208 } else if (src_factor == BLEND_FACTOR_ZERO && invert_src) { 209 function->a = MALI_BLEND_OPERAND_A_SRC; 210 function->b = MALI_BLEND_OPERAND_B_DEST; 211 if (blend_func == BLEND_FUNC_SUBTRACT) 212 function->negate_b = true; 213 else if (blend_func == BLEND_FUNC_REVERSE_SUBTRACT) 214 function->negate_a = true; 215 function->invert_c = invert_dest; 216 function->c = to_c_factor(dest_factor); 217 } else if (dest_factor == BLEND_FACTOR_ZERO && !invert_dest) { 218 function->a = MALI_BLEND_OPERAND_A_ZERO; 219 function->b = MALI_BLEND_OPERAND_B_SRC; 220 if (blend_func == BLEND_FUNC_REVERSE_SUBTRACT) 221 function->negate_b = true; 222 function->invert_c = invert_src; 223 function->c = to_c_factor(src_factor); 224 } else if (dest_factor == BLEND_FACTOR_ZERO && invert_dest) { 225 function->a = MALI_BLEND_OPERAND_A_DEST; 226 function->b = MALI_BLEND_OPERAND_B_SRC; 227 if (blend_func == BLEND_FUNC_SUBTRACT) 228 function->negate_a = true; 229 else if (blend_func == BLEND_FUNC_REVERSE_SUBTRACT) 230 function->negate_b = true; 231 function->invert_c = invert_src; 232 function->c = to_c_factor(src_factor); 233 } else if (src_factor == dest_factor && invert_src == invert_dest) { 234 function->a = MALI_BLEND_OPERAND_A_ZERO; 235 function->invert_c = invert_src; 236 function->c = to_c_factor(src_factor); 237 238 switch (blend_func) { 239 case BLEND_FUNC_ADD: 240 function->b = MALI_BLEND_OPERAND_B_SRC_PLUS_DEST; 241 break; 242 case BLEND_FUNC_REVERSE_SUBTRACT: 243 function->negate_b = true; 244 FALLTHROUGH; 245 case BLEND_FUNC_SUBTRACT: 246 function->b = MALI_BLEND_OPERAND_B_SRC_MINUS_DEST; 247 break; 248 default: 249 unreachable("Invalid blend function"); 250 } 251 } else if (is_2srcdest(blend_func, src_factor, invert_src, dest_factor, 252 invert_dest, is_alpha)) { 253 /* src*dest + dest*src = 2*src*dest = 0 + dest*(2*src) */ 254 function->a = MALI_BLEND_OPERAND_A_ZERO; 255 function->b = MALI_BLEND_OPERAND_B_DEST; 256 function->c = MALI_BLEND_OPERAND_C_SRC_X_2; 257 } else { 258 assert(src_factor == dest_factor && invert_src != invert_dest); 259 260 function->a = MALI_BLEND_OPERAND_A_DEST; 261 function->invert_c = invert_src; 262 function->c = to_c_factor(src_factor); 263 264 switch (blend_func) { 265 case BLEND_FUNC_ADD: 266 function->b = MALI_BLEND_OPERAND_B_SRC_MINUS_DEST; 267 break; 268 case BLEND_FUNC_REVERSE_SUBTRACT: 269 function->b = MALI_BLEND_OPERAND_B_SRC_PLUS_DEST; 270 function->negate_b = true; 271 break; 272 case BLEND_FUNC_SUBTRACT: 273 function->b = MALI_BLEND_OPERAND_B_SRC_PLUS_DEST; 274 function->negate_a = true; 275 break; 276 default: 277 unreachable("Invalid blend function\n"); 278 } 279 } 280 } 281 282 bool 283 pan_blend_is_opaque(const struct pan_blend_equation equation) 284 { 285 /* If a channel is masked out, we can't use opaque mode even if 286 * blending is disabled, since we need a tilebuffer read in there */ 287 if (equation.color_mask != 0xF) 288 return false; 289 290 /* With nothing masked out, disabled bledning is opaque */ 291 if (!equation.blend_enable) 292 return true; 293 294 /* Also detect open-coded opaque blending */ 295 return equation.rgb_src_factor == BLEND_FACTOR_ZERO && 296 equation.rgb_invert_src_factor && 297 equation.rgb_dst_factor == BLEND_FACTOR_ZERO && 298 !equation.rgb_invert_dst_factor && 299 (equation.rgb_func == BLEND_FUNC_ADD || 300 equation.rgb_func == BLEND_FUNC_SUBTRACT) && 301 equation.alpha_src_factor == BLEND_FACTOR_ZERO && 302 equation.alpha_invert_src_factor && 303 equation.alpha_dst_factor == BLEND_FACTOR_ZERO && 304 !equation.alpha_invert_dst_factor && 305 (equation.alpha_func == BLEND_FUNC_ADD || 306 equation.alpha_func == BLEND_FUNC_SUBTRACT); 307 } 308 309 static bool 310 is_dest_factor(enum blend_factor factor, bool alpha) 311 { 312 return factor == BLEND_FACTOR_DST_ALPHA || 313 factor == BLEND_FACTOR_DST_COLOR || 314 (factor == BLEND_FACTOR_SRC_ALPHA_SATURATE && !alpha); 315 } 316 317 /* Determines if a blend equation reads back the destination. This can occur by 318 * explicitly referencing the destination in the blend equation, or by using a 319 * partial writemask. */ 320 321 bool 322 pan_blend_reads_dest(const struct pan_blend_equation equation) 323 { 324 return (equation.color_mask && equation.color_mask != 0xF) || 325 is_dest_factor(equation.rgb_src_factor, false) || 326 is_dest_factor(equation.alpha_src_factor, true) || 327 equation.rgb_dst_factor != BLEND_FACTOR_ZERO || 328 equation.rgb_invert_dst_factor || 329 equation.alpha_dst_factor != BLEND_FACTOR_ZERO || 330 equation.alpha_invert_dst_factor; 331 } 332 333 /* Create the descriptor for a fixed blend mode given the corresponding API 334 * state. Assumes the equation can be represented as fixed-function. */ 335 336 void 337 pan_blend_to_fixed_function_equation(const struct pan_blend_equation equation, 338 struct MALI_BLEND_EQUATION *out) 339 { 340 /* If no blending is enabled, default back on `replace` mode */ 341 if (!equation.blend_enable) { 342 out->color_mask = equation.color_mask; 343 out->rgb.a = MALI_BLEND_OPERAND_A_SRC; 344 out->rgb.b = MALI_BLEND_OPERAND_B_SRC; 345 out->rgb.c = MALI_BLEND_OPERAND_C_ZERO; 346 out->alpha.a = MALI_BLEND_OPERAND_A_SRC; 347 out->alpha.b = MALI_BLEND_OPERAND_B_SRC; 348 out->alpha.c = MALI_BLEND_OPERAND_C_ZERO; 349 return; 350 } 351 352 /* Compile the fixed-function blend */ 353 to_panfrost_function(equation.rgb_func, 354 equation.rgb_src_factor, 355 equation.rgb_invert_src_factor, 356 equation.rgb_dst_factor, 357 equation.rgb_invert_dst_factor, 358 false, &out->rgb); 359 360 to_panfrost_function(equation.alpha_func, 361 equation.alpha_src_factor, 362 equation.alpha_invert_src_factor, 363 equation.alpha_dst_factor, 364 equation.alpha_invert_dst_factor, 365 true, &out->alpha); 366 out->color_mask = equation.color_mask; 367 } 368 369 uint32_t 370 pan_pack_blend(const struct pan_blend_equation equation) 371 { 372 STATIC_ASSERT(sizeof(uint32_t) == MALI_BLEND_EQUATION_LENGTH); 373 374 uint32_t out = 0; 375 376 pan_pack(&out, BLEND_EQUATION, cfg) { 377 pan_blend_to_fixed_function_equation(equation, &cfg); 378 } 379 380 return out; 381 } 382 383 static uint32_t pan_blend_shader_key_hash(const void *key) 384 { 385 return _mesa_hash_data(key, sizeof(struct pan_blend_shader_key)); 386 } 387 388 static bool pan_blend_shader_key_equal(const void *a, const void *b) 389 { 390 return !memcmp(a, b, sizeof(struct pan_blend_shader_key)); 391 } 392 393 void 394 pan_blend_shaders_init(struct panfrost_device *dev) 395 { 396 dev->blend_shaders.shaders = 397 _mesa_hash_table_create(NULL, pan_blend_shader_key_hash, 398 pan_blend_shader_key_equal); 399 pthread_mutex_init(&dev->blend_shaders.lock, NULL); 400 } 401 402 void 403 pan_blend_shaders_cleanup(struct panfrost_device *dev) 404 { 405 _mesa_hash_table_destroy(dev->blend_shaders.shaders, NULL); 406 } 407 408 #else /* ifndef PAN_ARCH */ 409 410 static const char * 411 logicop_str(enum pipe_logicop logicop) 412 { 413 switch (logicop) { 414 case PIPE_LOGICOP_CLEAR: return "clear"; 415 case PIPE_LOGICOP_NOR: return "nor"; 416 case PIPE_LOGICOP_AND_INVERTED: return "and-inverted"; 417 case PIPE_LOGICOP_COPY_INVERTED: return "copy-inverted"; 418 case PIPE_LOGICOP_AND_REVERSE: return "and-reverse"; 419 case PIPE_LOGICOP_INVERT: return "invert"; 420 case PIPE_LOGICOP_XOR: return "xor"; 421 case PIPE_LOGICOP_NAND: return "nand"; 422 case PIPE_LOGICOP_AND: return "and"; 423 case PIPE_LOGICOP_EQUIV: return "equiv"; 424 case PIPE_LOGICOP_NOOP: return "noop"; 425 case PIPE_LOGICOP_OR_INVERTED: return "or-inverted"; 426 case PIPE_LOGICOP_COPY: return "copy"; 427 case PIPE_LOGICOP_OR_REVERSE: return "or-reverse"; 428 case PIPE_LOGICOP_OR: return "or"; 429 case PIPE_LOGICOP_SET: return "set"; 430 default: unreachable("Invalid logicop\n"); 431 } 432 } 433 434 static void 435 get_equation_str(const struct pan_blend_rt_state *rt_state, 436 char *str, unsigned len) 437 { 438 const char *funcs[] = { 439 "add", "sub", "reverse_sub", "min", "max", 440 }; 441 const char *factors[] = { 442 "zero", "src_color", "src1_color", "dst_color", 443 "src_alpha", "src1_alpha", "dst_alpha", 444 "const_color", "const_alpha", "src_alpha_sat", 445 }; 446 int ret; 447 448 if (!rt_state->equation.blend_enable) { 449 ret = snprintf(str, len, "replace"); 450 assert(ret > 0); 451 return; 452 } 453 454 if (rt_state->equation.color_mask & 7) { 455 assert(rt_state->equation.rgb_func < ARRAY_SIZE(funcs)); 456 assert(rt_state->equation.rgb_src_factor < ARRAY_SIZE(factors)); 457 assert(rt_state->equation.rgb_dst_factor < ARRAY_SIZE(factors)); 458 ret = snprintf(str, len, "%s%s%s(func=%s,src_factor=%s%s,dst_factor=%s%s)%s", 459 (rt_state->equation.color_mask & 1) ? "R" : "", 460 (rt_state->equation.color_mask & 2) ? "G" : "", 461 (rt_state->equation.color_mask & 4) ? "B" : "", 462 funcs[rt_state->equation.rgb_func], 463 rt_state->equation.rgb_invert_src_factor ? "-" : "", 464 factors[rt_state->equation.rgb_src_factor], 465 rt_state->equation.rgb_invert_dst_factor ? "-" : "", 466 factors[rt_state->equation.rgb_dst_factor], 467 rt_state->equation.color_mask & 8 ? ";" : ""); 468 assert(ret > 0); 469 str += ret; 470 len -= ret; 471 } 472 473 if (rt_state->equation.color_mask & 8) { 474 assert(rt_state->equation.alpha_func < ARRAY_SIZE(funcs)); 475 assert(rt_state->equation.alpha_src_factor < ARRAY_SIZE(factors)); 476 assert(rt_state->equation.alpha_dst_factor < ARRAY_SIZE(factors)); 477 ret = snprintf(str, len, "A(func=%s,src_factor=%s%s,dst_factor=%s%s)", 478 funcs[rt_state->equation.alpha_func], 479 rt_state->equation.alpha_invert_src_factor ? "-" : "", 480 factors[rt_state->equation.alpha_src_factor], 481 rt_state->equation.alpha_invert_dst_factor ? "-" : "", 482 factors[rt_state->equation.alpha_dst_factor]); 483 assert(ret > 0); 484 str += ret; 485 len -= ret; 486 } 487 } 488 489 static bool 490 pan_inline_blend_constants(nir_builder *b, nir_instr *instr, void *data) 491 { 492 if (instr->type != nir_instr_type_intrinsic) 493 return false; 494 495 nir_intrinsic_instr *intr = nir_instr_as_intrinsic(instr); 496 if (intr->intrinsic != nir_intrinsic_load_blend_const_color_rgba) 497 return false; 498 499 float *floats = data; 500 const nir_const_value constants[4] = { 501 { .f32 = floats[0] }, 502 { .f32 = floats[1] }, 503 { .f32 = floats[2] }, 504 { .f32 = floats[3] } 505 }; 506 507 b->cursor = nir_after_instr(instr); 508 nir_ssa_def *constant = nir_build_imm(b, 4, 32, constants); 509 nir_ssa_def_rewrite_uses(&intr->dest.ssa, constant); 510 nir_instr_remove(instr); 511 return true; 512 } 513 514 nir_shader * 515 GENX(pan_blend_create_shader)(const struct panfrost_device *dev, 516 const struct pan_blend_state *state, 517 nir_alu_type src0_type, 518 nir_alu_type src1_type, 519 unsigned rt) 520 { 521 const struct pan_blend_rt_state *rt_state = &state->rts[rt]; 522 char equation_str[128] = { 0 }; 523 524 get_equation_str(rt_state, equation_str, sizeof(equation_str)); 525 526 nir_builder b = 527 nir_builder_init_simple_shader(MESA_SHADER_FRAGMENT, 528 GENX(pan_shader_get_compiler_options)(), 529 "pan_blend(rt=%d,fmt=%s,nr_samples=%d,%s=%s)", 530 rt, util_format_name(rt_state->format), 531 rt_state->nr_samples, 532 state->logicop_enable ? "logicop" : "equation", 533 state->logicop_enable ? 534 logicop_str(state->logicop_func) : equation_str); 535 536 const struct util_format_description *format_desc = 537 util_format_description(rt_state->format); 538 nir_alu_type nir_type = pan_unpacked_type_for_format(format_desc); 539 enum glsl_base_type glsl_type = nir_get_glsl_base_type_for_nir_type(nir_type); 540 541 nir_lower_blend_options options = { 542 .logicop_enable = state->logicop_enable, 543 .logicop_func = state->logicop_func, 544 .rt[0].colormask = rt_state->equation.color_mask, 545 .format[0] = rt_state->format 546 }; 547 548 if (!rt_state->equation.blend_enable) { 549 static const nir_lower_blend_channel replace = { 550 .func = BLEND_FUNC_ADD, 551 .src_factor = BLEND_FACTOR_ZERO, 552 .invert_src_factor = true, 553 .dst_factor = BLEND_FACTOR_ZERO, 554 .invert_dst_factor = false, 555 }; 556 557 options.rt[0].rgb = replace; 558 options.rt[0].alpha = replace; 559 } else { 560 options.rt[0].rgb.func = rt_state->equation.rgb_func; 561 options.rt[0].rgb.src_factor = rt_state->equation.rgb_src_factor; 562 options.rt[0].rgb.invert_src_factor = rt_state->equation.rgb_invert_src_factor; 563 options.rt[0].rgb.dst_factor = rt_state->equation.rgb_dst_factor; 564 options.rt[0].rgb.invert_dst_factor = rt_state->equation.rgb_invert_dst_factor; 565 options.rt[0].alpha.func = rt_state->equation.alpha_func; 566 options.rt[0].alpha.src_factor = rt_state->equation.alpha_src_factor; 567 options.rt[0].alpha.invert_src_factor = rt_state->equation.alpha_invert_src_factor; 568 options.rt[0].alpha.dst_factor = rt_state->equation.alpha_dst_factor; 569 options.rt[0].alpha.invert_dst_factor = rt_state->equation.alpha_invert_dst_factor; 570 } 571 572 nir_alu_type src_types[] = { src0_type ?: nir_type_float32, src1_type ?: nir_type_float32 }; 573 574 /* HACK: workaround buggy TGSI shaders (u_blitter) */ 575 for (unsigned i = 0; i < ARRAY_SIZE(src_types); ++i) { 576 src_types[i] = nir_alu_type_get_base_type(nir_type) | 577 nir_alu_type_get_type_size(src_types[i]); 578 } 579 580 nir_variable *c_src = 581 nir_variable_create(b.shader, nir_var_shader_in, 582 glsl_vector_type(nir_get_glsl_base_type_for_nir_type(src_types[0]), 4), 583 "gl_Color"); 584 c_src->data.location = VARYING_SLOT_COL0; 585 nir_variable *c_src1 = 586 nir_variable_create(b.shader, nir_var_shader_in, 587 glsl_vector_type(nir_get_glsl_base_type_for_nir_type(src_types[1]), 4), 588 "gl_Color1"); 589 c_src1->data.location = VARYING_SLOT_VAR0; 590 c_src1->data.driver_location = 1; 591 nir_variable *c_out = 592 nir_variable_create(b.shader, nir_var_shader_out, 593 glsl_vector_type(glsl_type, 4), 594 "gl_FragColor"); 595 c_out->data.location = FRAG_RESULT_DATA0; 596 597 nir_ssa_def *s_src[] = {nir_load_var(&b, c_src), nir_load_var(&b, c_src1)}; 598 599 /* Saturate integer conversions */ 600 for (int i = 0; i < ARRAY_SIZE(s_src); ++i) { 601 nir_alu_type T = nir_alu_type_get_base_type(nir_type); 602 s_src[i] = nir_convert_with_rounding(&b, s_src[i], 603 src_types[i], nir_type, 604 nir_rounding_mode_undef, 605 T != nir_type_float); 606 } 607 608 /* Build a trivial blend shader */ 609 nir_store_var(&b, c_out, s_src[0], 0xFF); 610 611 options.src1 = s_src[1]; 612 613 NIR_PASS_V(b.shader, nir_lower_blend, options); 614 nir_shader_instructions_pass(b.shader, pan_inline_blend_constants, 615 nir_metadata_block_index | nir_metadata_dominance, 616 (void *) state->constants); 617 618 return b.shader; 619 } 620 621 #if PAN_ARCH >= 6 622 uint64_t 623 GENX(pan_blend_get_internal_desc)(const struct panfrost_device *dev, 624 enum pipe_format fmt, unsigned rt, 625 unsigned force_size, bool dithered) 626 { 627 const struct util_format_description *desc = util_format_description(fmt); 628 uint64_t res; 629 630 pan_pack(&res, INTERNAL_BLEND, cfg) { 631 cfg.mode = MALI_BLEND_MODE_OPAQUE; 632 cfg.fixed_function.num_comps = desc->nr_channels; 633 cfg.fixed_function.rt = rt; 634 635 nir_alu_type T = pan_unpacked_type_for_format(desc); 636 637 if (force_size) 638 T = nir_alu_type_get_base_type(T) | force_size; 639 640 switch (T) { 641 case nir_type_float16: 642 cfg.fixed_function.conversion.register_format = 643 MALI_REGISTER_FILE_FORMAT_F16; 644 break; 645 case nir_type_float32: 646 cfg.fixed_function.conversion.register_format = 647 MALI_REGISTER_FILE_FORMAT_F32; 648 break; 649 case nir_type_int8: 650 case nir_type_int16: 651 cfg.fixed_function.conversion.register_format = 652 MALI_REGISTER_FILE_FORMAT_I16; 653 break; 654 case nir_type_int32: 655 cfg.fixed_function.conversion.register_format = 656 MALI_REGISTER_FILE_FORMAT_I32; 657 break; 658 case nir_type_uint8: 659 case nir_type_uint16: 660 cfg.fixed_function.conversion.register_format = 661 MALI_REGISTER_FILE_FORMAT_U16; 662 break; 663 case nir_type_uint32: 664 cfg.fixed_function.conversion.register_format = 665 MALI_REGISTER_FILE_FORMAT_U32; 666 break; 667 default: 668 unreachable("Invalid format"); 669 } 670 671 cfg.fixed_function.conversion.memory_format = 672 panfrost_format_to_bifrost_blend(dev, fmt, dithered); 673 } 674 675 return res; 676 } 677 #endif 678 679 struct pan_blend_shader_variant * 680 GENX(pan_blend_get_shader_locked)(const struct panfrost_device *dev, 681 const struct pan_blend_state *state, 682 nir_alu_type src0_type, 683 nir_alu_type src1_type, 684 unsigned rt) 685 { 686 struct pan_blend_shader_key key = { 687 .format = state->rts[rt].format, 688 .src0_type = src0_type, 689 .src1_type = src1_type, 690 .rt = rt, 691 .has_constants = pan_blend_constant_mask(state->rts[rt].equation) != 0, 692 .logicop_enable = state->logicop_enable, 693 .logicop_func = state->logicop_func, 694 .nr_samples = state->rts[rt].nr_samples, 695 .equation = state->rts[rt].equation, 696 }; 697 698 struct hash_entry *he = _mesa_hash_table_search(dev->blend_shaders.shaders, &key); 699 struct pan_blend_shader *shader = he ? he->data : NULL; 700 701 if (!shader) { 702 shader = rzalloc(dev->blend_shaders.shaders, struct pan_blend_shader); 703 shader->key = key; 704 list_inithead(&shader->variants); 705 _mesa_hash_table_insert(dev->blend_shaders.shaders, &shader->key, shader); 706 } 707 708 list_for_each_entry(struct pan_blend_shader_variant, iter, 709 &shader->variants, node) { 710 if (!key.has_constants || 711 !memcmp(iter->constants, state->constants, sizeof(iter->constants))) { 712 return iter; 713 } 714 } 715 716 struct pan_blend_shader_variant *variant = NULL; 717 718 if (shader->nvariants < PAN_BLEND_SHADER_MAX_VARIANTS) { 719 variant = rzalloc(shader, struct pan_blend_shader_variant); 720 memcpy(variant->constants, state->constants, sizeof(variant->constants)); 721 util_dynarray_init(&variant->binary, variant); 722 list_add(&variant->node, &shader->variants); 723 shader->nvariants++; 724 } else { 725 variant = list_last_entry(&shader->variants, struct pan_blend_shader_variant, node); 726 list_del(&variant->node); 727 list_add(&variant->node, &shader->variants); 728 util_dynarray_clear(&variant->binary); 729 } 730 731 nir_shader *nir = 732 GENX(pan_blend_create_shader)(dev, state, src0_type, src1_type, rt); 733 734 /* Compile the NIR shader */ 735 struct panfrost_compile_inputs inputs = { 736 .gpu_id = dev->gpu_id, 737 .is_blend = true, 738 .blend.rt = shader->key.rt, 739 .blend.nr_samples = key.nr_samples, 740 .rt_formats = { key.format }, 741 }; 742 743 #if PAN_ARCH >= 6 744 inputs.blend.bifrost_blend_desc = 745 GENX(pan_blend_get_internal_desc)(dev, key.format, key.rt, 0, false); 746 #endif 747 748 struct pan_shader_info info; 749 750 GENX(pan_shader_compile)(nir, &inputs, &variant->binary, &info); 751 752 variant->work_reg_count = info.work_reg_count; 753 754 #if PAN_ARCH <= 5 755 variant->first_tag = info.midgard.first_tag; 756 #endif 757 758 ralloc_free(nir); 759 760 return variant; 761 } 762 #endif /* ifndef PAN_ARCH */ 763
Indexes created Sat Aug 01 00:24:56 UTC 2026