1/* -*- c-basic-offset: 4 -*- */ 2/* 3 * Copyright © 2006,2010 Intel Corporation 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 * Authors: 25 * Eric Anholt <eric@anholt.net> 26 * Chris Wilson <chris@chris-wilson.co.uk> 27 * 28 */ 29 30/* Each instruction is 3 dwords long, though most don't require all 31 * this space. Maximum of 123 instructions. Smaller maxes per insn 32 * type. 33 */ 34#define _3DSTATE_PIXEL_SHADER_PROGRAM (CMD_3D|(0x1d<<24)|(0x5<<16)) 35 36#define REG_TYPE_R 0 /* temporary regs, no need to 37 * dcl, must be written before 38 * read -- Preserved between 39 * phases. 40 */ 41#define REG_TYPE_T 1 /* Interpolated values, must be 42 * dcl'ed before use. 43 * 44 * 0..7: texture coord, 45 * 8: diffuse spec, 46 * 9: specular color, 47 * 10: fog parameter in w. 48 */ 49#define REG_TYPE_CONST 2 /* Restriction: only one const 50 * can be referenced per 51 * instruction, though it may be 52 * selected for multiple inputs. 53 * Constants not initialized 54 * default to zero. 55 */ 56#define REG_TYPE_S 3 /* sampler */ 57#define REG_TYPE_OC 4 /* output color (rgba) */ 58#define REG_TYPE_OD 5 /* output depth (w), xyz are 59 * temporaries. If not written, 60 * interpolated depth is used? 61 */ 62#define REG_TYPE_U 6 /* unpreserved temporaries */ 63#define REG_TYPE_MASK 0x7 64#define REG_TYPE_SHIFT 4 65#define REG_NR_MASK 0xf 66 67/* REG_TYPE_T: 68*/ 69#define T_TEX0 0 70#define T_TEX1 1 71#define T_TEX2 2 72#define T_TEX3 3 73#define T_TEX4 4 74#define T_TEX5 5 75#define T_TEX6 6 76#define T_TEX7 7 77#define T_DIFFUSE 8 78#define T_SPECULAR 9 79#define T_FOG_W 10 /* interpolated fog is in W coord */ 80 81/* Arithmetic instructions */ 82 83/* .replicate_swizzle == selection and replication of a particular 84 * scalar channel, ie., .xxxx, .yyyy, .zzzz or .wwww 85 */ 86#define A0_NOP (0x0<<24) /* no operation */ 87#define A0_ADD (0x1<<24) /* dst = src0 + src1 */ 88#define A0_MOV (0x2<<24) /* dst = src0 */ 89#define A0_MUL (0x3<<24) /* dst = src0 * src1 */ 90#define A0_MAD (0x4<<24) /* dst = src0 * src1 + src2 */ 91#define A0_DP2ADD (0x5<<24) /* dst.xyzw = src0.xy dot src1.xy + src2.replicate_swizzle */ 92#define A0_DP3 (0x6<<24) /* dst.xyzw = src0.xyz dot src1.xyz */ 93#define A0_DP4 (0x7<<24) /* dst.xyzw = src0.xyzw dot src1.xyzw */ 94#define A0_FRC (0x8<<24) /* dst = src0 - floor(src0) */ 95#define A0_RCP (0x9<<24) /* dst.xyzw = 1/(src0.replicate_swizzle) */ 96#define A0_RSQ (0xa<<24) /* dst.xyzw = 1/(sqrt(abs(src0.replicate_swizzle))) */ 97#define A0_EXP (0xb<<24) /* dst.xyzw = exp2(src0.replicate_swizzle) */ 98#define A0_LOG (0xc<<24) /* dst.xyzw = log2(abs(src0.replicate_swizzle)) */ 99#define A0_CMP (0xd<<24) /* dst = (src0 >= 0.0) ? src1 : src2 */ 100#define A0_MIN (0xe<<24) /* dst = (src0 < src1) ? src0 : src1 */ 101#define A0_MAX (0xf<<24) /* dst = (src0 >= src1) ? src0 : src1 */ 102#define A0_FLR (0x10<<24) /* dst = floor(src0) */ 103#define A0_MOD (0x11<<24) /* dst = src0 fmod 1.0 */ 104#define A0_TRC (0x12<<24) /* dst = int(src0) */ 105#define A0_SGE (0x13<<24) /* dst = src0 >= src1 ? 1.0 : 0.0 */ 106#define A0_SLT (0x14<<24) /* dst = src0 < src1 ? 1.0 : 0.0 */ 107#define A0_DEST_SATURATE (1<<22) 108#define A0_DEST_TYPE_SHIFT 19 109/* Allow: R, OC, OD, U */ 110#define A0_DEST_NR_SHIFT 14 111/* Allow R: 0..15, OC,OD: 0..0, U: 0..2 */ 112#define A0_DEST_CHANNEL_X (1<<10) 113#define A0_DEST_CHANNEL_Y (2<<10) 114#define A0_DEST_CHANNEL_Z (4<<10) 115#define A0_DEST_CHANNEL_W (8<<10) 116#define A0_DEST_CHANNEL_ALL (0xf<<10) 117#define A0_DEST_CHANNEL_SHIFT 10 118#define A0_SRC0_TYPE_SHIFT 7 119#define A0_SRC0_NR_SHIFT 2 120 121#define A0_DEST_CHANNEL_XY (A0_DEST_CHANNEL_X|A0_DEST_CHANNEL_Y) 122#define A0_DEST_CHANNEL_XYZ (A0_DEST_CHANNEL_XY|A0_DEST_CHANNEL_Z) 123 124#define SRC_X 0 125#define SRC_Y 1 126#define SRC_Z 2 127#define SRC_W 3 128#define SRC_ZERO 4 129#define SRC_ONE 5 130 131#define A1_SRC0_CHANNEL_X_NEGATE (1<<31) 132#define A1_SRC0_CHANNEL_X_SHIFT 28 133#define A1_SRC0_CHANNEL_Y_NEGATE (1<<27) 134#define A1_SRC0_CHANNEL_Y_SHIFT 24 135#define A1_SRC0_CHANNEL_Z_NEGATE (1<<23) 136#define A1_SRC0_CHANNEL_Z_SHIFT 20 137#define A1_SRC0_CHANNEL_W_NEGATE (1<<19) 138#define A1_SRC0_CHANNEL_W_SHIFT 16 139#define A1_SRC1_TYPE_SHIFT 13 140#define A1_SRC1_NR_SHIFT 8 141#define A1_SRC1_CHANNEL_X_NEGATE (1<<7) 142#define A1_SRC1_CHANNEL_X_SHIFT 4 143#define A1_SRC1_CHANNEL_Y_NEGATE (1<<3) 144#define A1_SRC1_CHANNEL_Y_SHIFT 0 145 146#define A2_SRC1_CHANNEL_Z_NEGATE (1<<31) 147#define A2_SRC1_CHANNEL_Z_SHIFT 28 148#define A2_SRC1_CHANNEL_W_NEGATE (1<<27) 149#define A2_SRC1_CHANNEL_W_SHIFT 24 150#define A2_SRC2_TYPE_SHIFT 21 151#define A2_SRC2_NR_SHIFT 16 152#define A2_SRC2_CHANNEL_X_NEGATE (1<<15) 153#define A2_SRC2_CHANNEL_X_SHIFT 12 154#define A2_SRC2_CHANNEL_Y_NEGATE (1<<11) 155#define A2_SRC2_CHANNEL_Y_SHIFT 8 156#define A2_SRC2_CHANNEL_Z_NEGATE (1<<7) 157#define A2_SRC2_CHANNEL_Z_SHIFT 4 158#define A2_SRC2_CHANNEL_W_NEGATE (1<<3) 159#define A2_SRC2_CHANNEL_W_SHIFT 0 160 161/* Texture instructions */ 162#define T0_TEXLD (0x15<<24) /* Sample texture using predeclared 163 * sampler and address, and output 164 * filtered texel data to destination 165 * register */ 166#define T0_TEXLDP (0x16<<24) /* Same as texld but performs a 167 * perspective divide of the texture 168 * coordinate .xyz values by .w before 169 * sampling. */ 170#define T0_TEXLDB (0x17<<24) /* Same as texld but biases the 171 * computed LOD by w. Only S4.6 two's 172 * comp is used. This implies that a 173 * float to fixed conversion is 174 * done. */ 175#define T0_TEXKILL (0x18<<24) /* Does not perform a sampling 176 * operation. Simply kills the pixel 177 * if any channel of the address 178 * register is < 0.0. */ 179#define T0_DEST_TYPE_SHIFT 19 180/* Allow: R, OC, OD, U */ 181/* Note: U (unpreserved) regs do not retain their values between 182 * phases (cannot be used for feedback) 183 * 184 * Note: oC and OD registers can only be used as the destination of a 185 * texture instruction once per phase (this is an implementation 186 * restriction). 187 */ 188#define T0_DEST_NR_SHIFT 14 189/* Allow R: 0..15, OC,OD: 0..0, U: 0..2 */ 190#define T0_SAMPLER_NR_SHIFT 0 /* This field ignored for TEXKILL */ 191#define T0_SAMPLER_NR_MASK (0xf<<0) 192 193#define T1_ADDRESS_REG_TYPE_SHIFT 24 /* Reg to use as texture coord */ 194/* Allow R, T, OC, OD -- R, OC, OD are 'dependent' reads, new program phase */ 195#define T1_ADDRESS_REG_NR_SHIFT 17 196#define T2_MBZ 0 197 198/* Declaration instructions */ 199#define D0_DCL (0x19<<24) /* Declare a t (interpolated attrib) 200 * register or an s (sampler) 201 * register. */ 202#define D0_SAMPLE_TYPE_SHIFT 22 203#define D0_SAMPLE_TYPE_2D (0x0<<22) 204#define D0_SAMPLE_TYPE_CUBE (0x1<<22) 205#define D0_SAMPLE_TYPE_VOLUME (0x2<<22) 206#define D0_SAMPLE_TYPE_MASK (0x3<<22) 207 208#define D0_TYPE_SHIFT 19 209/* Allow: T, S */ 210#define D0_NR_SHIFT 14 211/* Allow T: 0..10, S: 0..15 */ 212#define D0_CHANNEL_X (1<<10) 213#define D0_CHANNEL_Y (2<<10) 214#define D0_CHANNEL_Z (4<<10) 215#define D0_CHANNEL_W (8<<10) 216#define D0_CHANNEL_ALL (0xf<<10) 217#define D0_CHANNEL_NONE (0<<10) 218 219#define D0_CHANNEL_XY (D0_CHANNEL_X|D0_CHANNEL_Y) 220#define D0_CHANNEL_XYZ (D0_CHANNEL_XY|D0_CHANNEL_Z) 221 222/* I915 Errata: Do not allow (xz), (xw), (xzw) combinations for diffuse 223 * or specular declarations. 224 * 225 * For T dcls, only allow: (x), (xy), (xyz), (w), (xyzw) 226 * 227 * Must be zero for S (sampler) dcls 228 */ 229#define D1_MBZ 0 230#define D2_MBZ 0 231 232 233/* MASK_* are the unshifted bitmasks of the destination mask in arithmetic 234 * operations 235 */ 236#define MASK_X 0x1 237#define MASK_Y 0x2 238#define MASK_Z 0x4 239#define MASK_W 0x8 240#define MASK_XYZ (MASK_X | MASK_Y | MASK_Z) 241#define MASK_XYZW (MASK_XYZ | MASK_W) 242#define MASK_SATURATE 0x10 243 244/* Temporary, undeclared regs. Preserved between phases */ 245#define FS_R0 ((REG_TYPE_R << REG_TYPE_SHIFT) | 0) 246#define FS_R1 ((REG_TYPE_R << REG_TYPE_SHIFT) | 1) 247#define FS_R2 ((REG_TYPE_R << REG_TYPE_SHIFT) | 2) 248#define FS_R3 ((REG_TYPE_R << REG_TYPE_SHIFT) | 3) 249 250/* Texture coordinate regs. Must be declared. */ 251#define FS_T0 ((REG_TYPE_T << REG_TYPE_SHIFT) | 0) 252#define FS_T1 ((REG_TYPE_T << REG_TYPE_SHIFT) | 1) 253#define FS_T2 ((REG_TYPE_T << REG_TYPE_SHIFT) | 2) 254#define FS_T3 ((REG_TYPE_T << REG_TYPE_SHIFT) | 3) 255#define FS_T4 ((REG_TYPE_T << REG_TYPE_SHIFT) | 4) 256#define FS_T5 ((REG_TYPE_T << REG_TYPE_SHIFT) | 5) 257#define FS_T6 ((REG_TYPE_T << REG_TYPE_SHIFT) | 6) 258#define FS_T7 ((REG_TYPE_T << REG_TYPE_SHIFT) | 7) 259#define FS_T8 ((REG_TYPE_T << REG_TYPE_SHIFT) | 8) 260#define FS_T9 ((REG_TYPE_T << REG_TYPE_SHIFT) | 9) 261#define FS_T10 ((REG_TYPE_T << REG_TYPE_SHIFT) | 10) 262 263/* Constant values */ 264#define FS_C0 ((REG_TYPE_CONST << REG_TYPE_SHIFT) | 0) 265#define FS_C1 ((REG_TYPE_CONST << REG_TYPE_SHIFT) | 1) 266#define FS_C2 ((REG_TYPE_CONST << REG_TYPE_SHIFT) | 2) 267#define FS_C3 ((REG_TYPE_CONST << REG_TYPE_SHIFT) | 3) 268#define FS_C4 ((REG_TYPE_CONST << REG_TYPE_SHIFT) | 4) 269#define FS_C5 ((REG_TYPE_CONST << REG_TYPE_SHIFT) | 5) 270#define FS_C6 ((REG_TYPE_CONST << REG_TYPE_SHIFT) | 6) 271#define FS_C7 ((REG_TYPE_CONST << REG_TYPE_SHIFT) | 7) 272 273/* Sampler regs */ 274#define FS_S0 ((REG_TYPE_S << REG_TYPE_SHIFT) | 0) 275#define FS_S1 ((REG_TYPE_S << REG_TYPE_SHIFT) | 1) 276#define FS_S2 ((REG_TYPE_S << REG_TYPE_SHIFT) | 2) 277#define FS_S3 ((REG_TYPE_S << REG_TYPE_SHIFT) | 3) 278 279/* Output color */ 280#define FS_OC ((REG_TYPE_OC << REG_TYPE_SHIFT) | 0) 281 282/* Output depth */ 283#define FS_OD ((REG_TYPE_OD << REG_TYPE_SHIFT) | 0) 284 285/* Unpreserved temporary regs */ 286#define FS_U0 ((REG_TYPE_U << REG_TYPE_SHIFT) | 0) 287#define FS_U1 ((REG_TYPE_U << REG_TYPE_SHIFT) | 1) 288#define FS_U2 ((REG_TYPE_U << REG_TYPE_SHIFT) | 2) 289#define FS_U3 ((REG_TYPE_U << REG_TYPE_SHIFT) | 3) 290 291#define X_CHANNEL_SHIFT (REG_TYPE_SHIFT + 3) 292#define Y_CHANNEL_SHIFT (X_CHANNEL_SHIFT + 4) 293#define Z_CHANNEL_SHIFT (Y_CHANNEL_SHIFT + 4) 294#define W_CHANNEL_SHIFT (Z_CHANNEL_SHIFT + 4) 295 296#define REG_CHANNEL_MASK 0xf 297 298#define REG_NR(reg) ((reg) & REG_NR_MASK) 299#define REG_TYPE(reg) (((reg) >> REG_TYPE_SHIFT) & REG_TYPE_MASK) 300#define REG_X(reg) (((reg) >> X_CHANNEL_SHIFT) & REG_CHANNEL_MASK) 301#define REG_Y(reg) (((reg) >> Y_CHANNEL_SHIFT) & REG_CHANNEL_MASK) 302#define REG_Z(reg) (((reg) >> Z_CHANNEL_SHIFT) & REG_CHANNEL_MASK) 303#define REG_W(reg) (((reg) >> W_CHANNEL_SHIFT) & REG_CHANNEL_MASK) 304 305enum i915_fs_channel { 306 X_CHANNEL_VAL = 0, 307 Y_CHANNEL_VAL, 308 Z_CHANNEL_VAL, 309 W_CHANNEL_VAL, 310 ZERO_CHANNEL_VAL, 311 ONE_CHANNEL_VAL, 312 313 NEG_X_CHANNEL_VAL = X_CHANNEL_VAL | 0x8, 314 NEG_Y_CHANNEL_VAL = Y_CHANNEL_VAL | 0x8, 315 NEG_Z_CHANNEL_VAL = Z_CHANNEL_VAL | 0x8, 316 NEG_W_CHANNEL_VAL = W_CHANNEL_VAL | 0x8, 317 NEG_ONE_CHANNEL_VAL = ONE_CHANNEL_VAL | 0x8 318}; 319 320#define i915_fs_operand(reg, x, y, z, w) \ 321 (reg) | \ 322(x##_CHANNEL_VAL << X_CHANNEL_SHIFT) | \ 323(y##_CHANNEL_VAL << Y_CHANNEL_SHIFT) | \ 324(z##_CHANNEL_VAL << Z_CHANNEL_SHIFT) | \ 325(w##_CHANNEL_VAL << W_CHANNEL_SHIFT) 326 327/** 328 * Construct an operand description for using a register with no swizzling 329 */ 330#define i915_fs_operand_reg(reg) \ 331 i915_fs_operand(reg, X, Y, Z, W) 332 333#define i915_fs_operand_reg_negate(reg) \ 334 i915_fs_operand(reg, NEG_X, NEG_Y, NEG_Z, NEG_W) 335 336/** 337 * Returns an operand containing (0.0, 0.0, 0.0, 0.0). 338 */ 339#define i915_fs_operand_zero() i915_fs_operand(FS_R0, ZERO, ZERO, ZERO, ZERO) 340 341/** 342 * Returns an unused operand 343 */ 344#define i915_fs_operand_none() i915_fs_operand_zero() 345 346/** 347 * Returns an operand containing (1.0, 1.0, 1.0, 1.0). 348 */ 349#define i915_fs_operand_one() i915_fs_operand(FS_R0, ONE, ONE, ONE, ONE) 350 351#define i915_get_hardware_channel_val(val, shift, negate) \ 352 (((val & 0x7) << shift) | ((val & 0x8) ? negate : 0)) 353 354/** 355 * Outputs a fragment shader command to declare a sampler or texture register. 356 */ 357#define i915_fs_dcl(reg) \ 358 do { \ 359 OUT_BATCH(D0_DCL | \ 360 (REG_TYPE(reg) << D0_TYPE_SHIFT) | \ 361 (REG_NR(reg) << D0_NR_SHIFT) | \ 362 ((REG_TYPE(reg) != REG_TYPE_S) ? D0_CHANNEL_ALL : 0)); \ 363 OUT_BATCH(0); \ 364 OUT_BATCH(0); \ 365 } while (0) 366 367#define i915_fs_texld(dest_reg, sampler_reg, address_reg) \ 368 do { \ 369 OUT_BATCH(T0_TEXLD | \ 370 (REG_TYPE(dest_reg) << T0_DEST_TYPE_SHIFT) | \ 371 (REG_NR(dest_reg) << T0_DEST_NR_SHIFT) | \ 372 (REG_NR(sampler_reg) << T0_SAMPLER_NR_SHIFT)); \ 373 OUT_BATCH((REG_TYPE(address_reg) << T1_ADDRESS_REG_TYPE_SHIFT) | \ 374 (REG_NR(address_reg) << T1_ADDRESS_REG_NR_SHIFT)); \ 375 OUT_BATCH(0); \ 376 } while (0) 377 378#define i915_fs_texldp(dest_reg, sampler_reg, address_reg) \ 379 do { \ 380 OUT_BATCH(T0_TEXLDP | \ 381 (REG_TYPE(dest_reg) << T0_DEST_TYPE_SHIFT) | \ 382 (REG_NR(dest_reg) << T0_DEST_NR_SHIFT) | \ 383 (REG_NR(sampler_reg) << T0_SAMPLER_NR_SHIFT)); \ 384 OUT_BATCH((REG_TYPE(address_reg) << T1_ADDRESS_REG_TYPE_SHIFT) | \ 385 (REG_NR(address_reg) << T1_ADDRESS_REG_NR_SHIFT)); \ 386 OUT_BATCH(0); \ 387 } while (0) 388 389#define i915_fs_arith_masked(op, dest_reg, dest_mask, operand0, operand1, operand2) \ 390 _i915_fs_arith_masked(A0_##op, dest_reg, dest_mask, operand0, operand1, operand2) 391 392#define i915_fs_arith(op, dest_reg, operand0, operand1, operand2) \ 393 _i915_fs_arith(A0_##op, dest_reg, operand0, operand1, operand2) 394 395#define _i915_fs_arith_masked(cmd, dest_reg, dest_mask, operand0, operand1, operand2) \ 396 do { \ 397 /* Set up destination register and write mask */ \ 398 OUT_BATCH(cmd | \ 399 (REG_TYPE(dest_reg) << A0_DEST_TYPE_SHIFT) | \ 400 (REG_NR(dest_reg) << A0_DEST_NR_SHIFT) | \ 401 (((dest_mask) & ~MASK_SATURATE) << A0_DEST_CHANNEL_SHIFT) | \ 402 (((dest_mask) & MASK_SATURATE) ? A0_DEST_SATURATE : 0) | \ 403 /* Set up operand 0 */ \ 404 (REG_TYPE(operand0) << A0_SRC0_TYPE_SHIFT) | \ 405 (REG_NR(operand0) << A0_SRC0_NR_SHIFT)); \ 406 OUT_BATCH(i915_get_hardware_channel_val(REG_X(operand0), \ 407 A1_SRC0_CHANNEL_X_SHIFT, \ 408 A1_SRC0_CHANNEL_X_NEGATE) | \ 409 i915_get_hardware_channel_val(REG_Y(operand0), \ 410 A1_SRC0_CHANNEL_Y_SHIFT, \ 411 A1_SRC0_CHANNEL_Y_NEGATE) | \ 412 i915_get_hardware_channel_val(REG_Z(operand0), \ 413 A1_SRC0_CHANNEL_Z_SHIFT, \ 414 A1_SRC0_CHANNEL_Z_NEGATE) | \ 415 i915_get_hardware_channel_val(REG_W(operand0), \ 416 A1_SRC0_CHANNEL_W_SHIFT, \ 417 A1_SRC0_CHANNEL_W_NEGATE) | \ 418 /* Set up operand 1 */ \ 419 (REG_TYPE(operand1) << A1_SRC1_TYPE_SHIFT) | \ 420 (REG_NR(operand1) << A1_SRC1_NR_SHIFT) | \ 421 i915_get_hardware_channel_val(REG_X(operand1), \ 422 A1_SRC1_CHANNEL_X_SHIFT, \ 423 A1_SRC1_CHANNEL_X_NEGATE) | \ 424 i915_get_hardware_channel_val(REG_Y(operand1), \ 425 A1_SRC1_CHANNEL_Y_SHIFT, \ 426 A1_SRC1_CHANNEL_Y_NEGATE)); \ 427 OUT_BATCH(i915_get_hardware_channel_val(REG_Z(operand1), \ 428 A2_SRC1_CHANNEL_Z_SHIFT, \ 429 A2_SRC1_CHANNEL_Z_NEGATE) | \ 430 i915_get_hardware_channel_val(REG_W(operand1), \ 431 A2_SRC1_CHANNEL_W_SHIFT, \ 432 A2_SRC1_CHANNEL_W_NEGATE) | \ 433 /* Set up operand 2 */ \ 434 (REG_TYPE(operand2) << A2_SRC2_TYPE_SHIFT) | \ 435 (REG_NR(operand2) << A2_SRC2_NR_SHIFT) | \ 436 i915_get_hardware_channel_val(REG_X(operand2), \ 437 A2_SRC2_CHANNEL_X_SHIFT, \ 438 A2_SRC2_CHANNEL_X_NEGATE) | \ 439 i915_get_hardware_channel_val(REG_Y(operand2), \ 440 A2_SRC2_CHANNEL_Y_SHIFT, \ 441 A2_SRC2_CHANNEL_Y_NEGATE) | \ 442 i915_get_hardware_channel_val(REG_Z(operand2), \ 443 A2_SRC2_CHANNEL_Z_SHIFT, \ 444 A2_SRC2_CHANNEL_Z_NEGATE) | \ 445 i915_get_hardware_channel_val(REG_W(operand2), \ 446 A2_SRC2_CHANNEL_W_SHIFT, \ 447 A2_SRC2_CHANNEL_W_NEGATE)); \ 448 } while (0) 449 450#define _i915_fs_arith(cmd, dest_reg, operand0, operand1, operand2) do {\ 451 /* Set up destination register and write mask */ \ 452 OUT_BATCH(cmd | \ 453 (REG_TYPE(dest_reg) << A0_DEST_TYPE_SHIFT) | \ 454 (REG_NR(dest_reg) << A0_DEST_NR_SHIFT) | \ 455 (A0_DEST_CHANNEL_ALL) | \ 456 /* Set up operand 0 */ \ 457 (REG_TYPE(operand0) << A0_SRC0_TYPE_SHIFT) | \ 458 (REG_NR(operand0) << A0_SRC0_NR_SHIFT)); \ 459 OUT_BATCH(i915_get_hardware_channel_val(REG_X(operand0), \ 460 A1_SRC0_CHANNEL_X_SHIFT, \ 461 A1_SRC0_CHANNEL_X_NEGATE) | \ 462 i915_get_hardware_channel_val(REG_Y(operand0), \ 463 A1_SRC0_CHANNEL_Y_SHIFT, \ 464 A1_SRC0_CHANNEL_Y_NEGATE) | \ 465 i915_get_hardware_channel_val(REG_Z(operand0), \ 466 A1_SRC0_CHANNEL_Z_SHIFT, \ 467 A1_SRC0_CHANNEL_Z_NEGATE) | \ 468 i915_get_hardware_channel_val(REG_W(operand0), \ 469 A1_SRC0_CHANNEL_W_SHIFT, \ 470 A1_SRC0_CHANNEL_W_NEGATE) | \ 471 /* Set up operand 1 */ \ 472 (REG_TYPE(operand1) << A1_SRC1_TYPE_SHIFT) | \ 473 (REG_NR(operand1) << A1_SRC1_NR_SHIFT) | \ 474 i915_get_hardware_channel_val(REG_X(operand1), \ 475 A1_SRC1_CHANNEL_X_SHIFT, \ 476 A1_SRC1_CHANNEL_X_NEGATE) | \ 477 i915_get_hardware_channel_val(REG_Y(operand1), \ 478 A1_SRC1_CHANNEL_Y_SHIFT, \ 479 A1_SRC1_CHANNEL_Y_NEGATE)); \ 480 OUT_BATCH(i915_get_hardware_channel_val(REG_Z(operand1), \ 481 A2_SRC1_CHANNEL_Z_SHIFT, \ 482 A2_SRC1_CHANNEL_Z_NEGATE) | \ 483 i915_get_hardware_channel_val(REG_W(operand1), \ 484 A2_SRC1_CHANNEL_W_SHIFT, \ 485 A2_SRC1_CHANNEL_W_NEGATE) | \ 486 /* Set up operand 2 */ \ 487 (REG_TYPE(operand2) << A2_SRC2_TYPE_SHIFT) | \ 488 (REG_NR(operand2) << A2_SRC2_NR_SHIFT) | \ 489 i915_get_hardware_channel_val(REG_X(operand2), \ 490 A2_SRC2_CHANNEL_X_SHIFT, \ 491 A2_SRC2_CHANNEL_X_NEGATE) | \ 492 i915_get_hardware_channel_val(REG_Y(operand2), \ 493 A2_SRC2_CHANNEL_Y_SHIFT, \ 494 A2_SRC2_CHANNEL_Y_NEGATE) | \ 495 i915_get_hardware_channel_val(REG_Z(operand2), \ 496 A2_SRC2_CHANNEL_Z_SHIFT, \ 497 A2_SRC2_CHANNEL_Z_NEGATE) | \ 498 i915_get_hardware_channel_val(REG_W(operand2), \ 499 A2_SRC2_CHANNEL_W_SHIFT, \ 500 A2_SRC2_CHANNEL_W_NEGATE)); \ 501} while (0) 502 503#define i915_fs_mov(dest_reg, operand0) \ 504 i915_fs_arith(MOV, dest_reg, \ 505 operand0, \ 506 i915_fs_operand_none(), \ 507 i915_fs_operand_none()) 508 509#define i915_fs_mov_masked(dest_reg, dest_mask, operand0) \ 510 i915_fs_arith_masked (MOV, dest_reg, dest_mask, \ 511 operand0, \ 512 i915_fs_operand_none(), \ 513 i915_fs_operand_none()) 514 515 516#define i915_fs_frc(dest_reg, operand0) \ 517 i915_fs_arith (FRC, dest_reg, \ 518 operand0, \ 519 i915_fs_operand_none(), \ 520 i915_fs_operand_none()) 521 522/** Add operand0 and operand1 and put the result in dest_reg */ 523#define i915_fs_add(dest_reg, operand0, operand1) \ 524 i915_fs_arith (ADD, dest_reg, \ 525 operand0, operand1, \ 526 i915_fs_operand_none()) 527 528/** Multiply operand0 and operand1 and put the result in dest_reg */ 529#define i915_fs_mul(dest_reg, operand0, operand1) \ 530 i915_fs_arith (MUL, dest_reg, \ 531 operand0, operand1, \ 532 i915_fs_operand_none()) 533 534/** Computes 1/sqrt(operand0.replicate_swizzle) puts the result in dest_reg */ 535#define i915_fs_rsq(dest_reg, dest_mask, operand0) \ 536 do { \ 537 if (dest_mask) { \ 538 i915_fs_arith_masked (RSQ, dest_reg, dest_mask, \ 539 operand0, \ 540 i915_fs_operand_none (), \ 541 i915_fs_operand_none ()); \ 542 } else { \ 543 i915_fs_arith (RSQ, dest_reg, \ 544 operand0, \ 545 i915_fs_operand_none (), \ 546 i915_fs_operand_none ()); \ 547 } \ 548 } while (0) 549 550/** Puts the minimum of operand0 and operand1 in dest_reg */ 551#define i915_fs_min(dest_reg, operand0, operand1) \ 552 i915_fs_arith (MIN, dest_reg, \ 553 operand0, operand1, \ 554 i915_fs_operand_none()) 555 556/** Puts the maximum of operand0 and operand1 in dest_reg */ 557#define i915_fs_max(dest_reg, operand0, operand1) \ 558 i915_fs_arith (MAX, dest_reg, \ 559 operand0, operand1, \ 560 i915_fs_operand_none()) 561 562#define i915_fs_cmp(dest_reg, operand0, operand1, operand2) \ 563 i915_fs_arith (CMP, dest_reg, operand0, operand1, operand2) 564 565/** Perform operand0 * operand1 + operand2 and put the result in dest_reg */ 566#define i915_fs_mad(dest_reg, dest_mask, op0, op1, op2) \ 567 do { \ 568 if (dest_mask) { \ 569 i915_fs_arith_masked (MAD, dest_reg, dest_mask, op0, op1, op2); \ 570 } else { \ 571 i915_fs_arith (MAD, dest_reg, op0, op1, op2); \ 572 } \ 573 } while (0) 574 575#define i915_fs_dp2add(dest_reg, dest_mask, op0, op1, op2) \ 576 do { \ 577 if (dest_mask) { \ 578 i915_fs_arith_masked (DP2ADD, dest_reg, dest_mask, op0, op1, op2); \ 579 } else { \ 580 i915_fs_arith (DP2ADD, dest_reg, op0, op1, op2); \ 581 } \ 582 } while (0) 583 584/** 585 * Perform a 3-component dot-product of operand0 and operand1 and put the 586 * resulting scalar in the channels of dest_reg specified by the dest_mask. 587 */ 588#define i915_fs_dp3(dest_reg, dest_mask, op0, op1) \ 589 do { \ 590 if (dest_mask) { \ 591 i915_fs_arith_masked (DP3, dest_reg, dest_mask, \ 592 op0, op1,\ 593 i915_fs_operand_none()); \ 594 } else { \ 595 i915_fs_arith (DP3, dest_reg, op0, op1,\ 596 i915_fs_operand_none()); \ 597 } \ 598 } while (0) 599 600/** 601 * Sets up local state for accumulating a fragment shader buffer. 602 * 603 * \param x maximum number of shader commands that may be used between 604 * a FS_START and FS_END 605 */ 606#define FS_LOCALS() \ 607 uint32_t _shader_offset 608 609#define FS_BEGIN() \ 610 do { \ 611 _shader_offset = intel->batch_used++; \ 612 } while (0) 613 614#define FS_END() \ 615 do { \ 616 intel->batch_ptr[_shader_offset] = \ 617 _3DSTATE_PIXEL_SHADER_PROGRAM | \ 618 (intel->batch_used - _shader_offset - 2); \ 619 } while (0); 620