diff options
Diffstat (limited to 'src/gallium/drivers/i965simple/brw_vs_emit.c')
| -rw-r--r-- | src/gallium/drivers/i965simple/brw_vs_emit.c | 1330 |
1 files changed, 0 insertions, 1330 deletions
diff --git a/src/gallium/drivers/i965simple/brw_vs_emit.c b/src/gallium/drivers/i965simple/brw_vs_emit.c deleted file mode 100644 index 3ee82d95b3a..00000000000 --- a/src/gallium/drivers/i965simple/brw_vs_emit.c +++ /dev/null @@ -1,1330 +0,0 @@ -/* - Copyright (C) Intel Corp. 2006. All Rights Reserved. - Intel funded Tungsten Graphics (http://www.tungstengraphics.com) to - develop this 3D driver. - - Permission is hereby granted, free of charge, to any person obtaining - a copy of this software and associated documentation files (the - "Software"), to deal in the Software without restriction, including - without limitation the rights to use, copy, modify, merge, publish, - distribute, sublicense, and/or sell copies of the Software, and to - permit persons to whom the Software is furnished to do so, subject to - the following conditions: - - The above copyright notice and this permission notice (including the - next paragraph) shall be included in all copies or substantial - portions of the Software. - - THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. - IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE - LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION - OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION - WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. - - **********************************************************************/ - /* - * Authors: - * Keith Whitwell <[email protected]> - */ - -#include "brw_context.h" -#include "brw_vs.h" - -#include "pipe/p_shader_tokens.h" -#include "tgsi/tgsi_parse.h" - -struct brw_prog_info { - unsigned num_temps; - unsigned num_addrs; - unsigned num_consts; - - unsigned writes_psize; - - unsigned pos_idx; - unsigned result_edge_idx; - unsigned edge_flag_idx; - unsigned psize_idx; -}; - -/* Do things as simply as possible. Allocate and populate all regs - * ahead of time. - */ -static void brw_vs_alloc_regs( struct brw_vs_compile *c, - struct brw_prog_info *info ) -{ - unsigned i, reg = 0, mrf; - unsigned nr_params; - - /* r0 -- reserved as usual - */ - c->r0 = brw_vec8_grf(reg, 0); reg++; - - /* User clip planes from curbe: - */ - if (c->key.nr_userclip) { - for (i = 0; i < c->key.nr_userclip; i++) { - c->userplane[i] = stride( brw_vec4_grf(reg+3+i/2, (i%2) * 4), 0, 4, 1); - } - - /* Deal with curbe alignment: - */ - reg += ((6+c->key.nr_userclip+3)/4)*2; - } - - /* Vertex program parameters from curbe: - */ - nr_params = c->prog_data.max_const; - for (i = 0; i < nr_params; i++) { - c->regs[TGSI_FILE_CONSTANT][i] = stride(brw_vec4_grf(reg+i/2, (i%2) * 4), 0, 4, 1); - } - reg += (nr_params+1)/2; - c->prog_data.curb_read_length = reg - 1; - - - - /* Allocate input regs: - */ - c->nr_inputs = c->vp->info.num_inputs; - for (i = 0; i < c->nr_inputs; i++) { - c->regs[TGSI_FILE_INPUT][i] = brw_vec8_grf(reg, 0); - reg++; - } - - - /* Allocate outputs: TODO: could organize the non-position outputs - * to go straight into message regs. - */ - c->nr_outputs = 0; - c->first_output = reg; - mrf = 4; - for (i = 0; i < c->vp->info.num_outputs; i++) { - c->nr_outputs++; -#if 0 - if (i == VERT_RESULT_HPOS) { - c->regs[TGSI_FILE_OUTPUT][i] = brw_vec8_grf(reg, 0); - reg++; - } - else if (i == VERT_RESULT_PSIZ) { - c->regs[TGSI_FILE_OUTPUT][i] = brw_vec8_grf(reg, 0); - reg++; - mrf++; /* just a placeholder? XXX fix later stages & remove this */ - } - else { - c->regs[TGSI_FILE_OUTPUT][i] = brw_message_reg(mrf); - mrf++; - } -#else - /*treat pos differently for now */ - if (i == info->pos_idx) { - c->regs[TGSI_FILE_OUTPUT][i] = brw_vec8_grf(reg, 0); - reg++; - } else { - c->regs[TGSI_FILE_OUTPUT][i] = brw_message_reg(mrf); - mrf++; - } -#endif - } - - /* Allocate program temporaries: - */ - for (i = 0; i < info->num_temps; i++) { - c->regs[TGSI_FILE_TEMPORARY][i] = brw_vec8_grf(reg, 0); - reg++; - } - - /* Address reg(s). Don't try to use the internal address reg until - * deref time. - */ - for (i = 0; i < info->num_addrs; i++) { - c->regs[TGSI_FILE_ADDRESS][i] = brw_reg(BRW_GENERAL_REGISTER_FILE, - reg, - 0, - BRW_REGISTER_TYPE_D, - BRW_VERTICAL_STRIDE_8, - BRW_WIDTH_8, - BRW_HORIZONTAL_STRIDE_1, - BRW_SWIZZLE_XXXX, - TGSI_WRITEMASK_X); - reg++; - } - - for (i = 0; i < 128; i++) { - if (c->output_regs[i].used_in_src) { - c->output_regs[i].reg = brw_vec8_grf(reg, 0); - reg++; - } - } - - c->stack = brw_uw16_reg(BRW_GENERAL_REGISTER_FILE, reg, 0); - reg += 2; - - - /* Some opcodes need an internal temporary: - */ - c->first_tmp = reg; - c->last_tmp = reg; /* for allocation purposes */ - - /* Each input reg holds data from two vertices. The - * urb_read_length is the number of registers read from *each* - * vertex urb, so is half the amount: - */ - c->prog_data.urb_read_length = (c->nr_inputs+1)/2; - - c->prog_data.urb_entry_size = (c->nr_outputs+2+3)/4; - c->prog_data.total_grf = reg; -} - - -static struct brw_reg get_tmp( struct brw_vs_compile *c ) -{ - struct brw_reg tmp = brw_vec8_grf(c->last_tmp, 0); - - if (++c->last_tmp > c->prog_data.total_grf) - c->prog_data.total_grf = c->last_tmp; - - return tmp; -} - -static void release_tmp( struct brw_vs_compile *c, struct brw_reg tmp ) -{ - if (tmp.nr == c->last_tmp-1) - c->last_tmp--; -} - -static void release_tmps( struct brw_vs_compile *c ) -{ - c->last_tmp = c->first_tmp; -} - - -static void unalias1( struct brw_vs_compile *c, - struct brw_reg dst, - struct brw_reg arg0, - void (*func)( struct brw_vs_compile *, - struct brw_reg, - struct brw_reg )) -{ - if (dst.file == arg0.file && dst.nr == arg0.nr) { - struct brw_compile *p = &c->func; - struct brw_reg tmp = brw_writemask(get_tmp(c), dst.dw1.bits.writemask); - func(c, tmp, arg0); - brw_MOV(p, dst, tmp); - } - else { - func(c, dst, arg0); - } -} - -static void unalias2( struct brw_vs_compile *c, - struct brw_reg dst, - struct brw_reg arg0, - struct brw_reg arg1, - void (*func)( struct brw_vs_compile *, - struct brw_reg, - struct brw_reg, - struct brw_reg )) -{ - if ((dst.file == arg0.file && dst.nr == arg0.nr) || - (dst.file == arg1.file && dst.nr == arg1.nr)) { - struct brw_compile *p = &c->func; - struct brw_reg tmp = brw_writemask(get_tmp(c), dst.dw1.bits.writemask); - func(c, tmp, arg0, arg1); - brw_MOV(p, dst, tmp); - } - else { - func(c, dst, arg0, arg1); - } -} - -static void emit_sop( struct brw_compile *p, - struct brw_reg dst, - struct brw_reg arg0, - struct brw_reg arg1, - unsigned cond) -{ - brw_push_insn_state(p); - brw_CMP(p, brw_null_reg(), cond, arg0, arg1); - brw_set_predicate_control(p, BRW_PREDICATE_NONE); - brw_MOV(p, dst, brw_imm_f(1.0f)); - brw_set_predicate_control(p, BRW_PREDICATE_NORMAL); - brw_MOV(p, dst, brw_imm_f(0.0f)); - brw_pop_insn_state(p); -} - -static void emit_seq( struct brw_compile *p, - struct brw_reg dst, - struct brw_reg arg0, - struct brw_reg arg1 ) -{ - emit_sop(p, dst, arg0, arg1, BRW_CONDITIONAL_EQ); -} - -static void emit_sne( struct brw_compile *p, - struct brw_reg dst, - struct brw_reg arg0, - struct brw_reg arg1 ) -{ - emit_sop(p, dst, arg0, arg1, BRW_CONDITIONAL_NEQ); -} -static void emit_slt( struct brw_compile *p, - struct brw_reg dst, - struct brw_reg arg0, - struct brw_reg arg1 ) -{ - emit_sop(p, dst, arg0, arg1, BRW_CONDITIONAL_L); -} - -static void emit_sle( struct brw_compile *p, - struct brw_reg dst, - struct brw_reg arg0, - struct brw_reg arg1 ) -{ - emit_sop(p, dst, arg0, arg1, BRW_CONDITIONAL_LE); -} - -static void emit_sgt( struct brw_compile *p, - struct brw_reg dst, - struct brw_reg arg0, - struct brw_reg arg1 ) -{ - emit_sop(p, dst, arg0, arg1, BRW_CONDITIONAL_G); -} - -static void emit_sge( struct brw_compile *p, - struct brw_reg dst, - struct brw_reg arg0, - struct brw_reg arg1 ) -{ - emit_sop(p, dst, arg0, arg1, BRW_CONDITIONAL_GE); -} - -static void emit_max( struct brw_compile *p, - struct brw_reg dst, - struct brw_reg arg0, - struct brw_reg arg1 ) -{ - brw_CMP(p, brw_null_reg(), BRW_CONDITIONAL_L, arg0, arg1); - brw_SEL(p, dst, arg1, arg0); - brw_set_predicate_control(p, BRW_PREDICATE_NONE); -} - -static void emit_min( struct brw_compile *p, - struct brw_reg dst, - struct brw_reg arg0, - struct brw_reg arg1 ) -{ - brw_CMP(p, brw_null_reg(), BRW_CONDITIONAL_L, arg0, arg1); - brw_SEL(p, dst, arg0, arg1); - brw_set_predicate_control(p, BRW_PREDICATE_NONE); -} - - -static void emit_math1( struct brw_vs_compile *c, - unsigned function, - struct brw_reg dst, - struct brw_reg arg0, - unsigned precision) -{ - /* There are various odd behaviours with SEND on the simulator. In - * addition there are documented issues with the fact that the GEN4 - * processor doesn't do dependency control properly on SEND - * results. So, on balance, this kludge to get around failures - * with writemasked math results looks like it might be necessary - * whether that turns out to be a simulator bug or not: - */ - struct brw_compile *p = &c->func; - struct brw_reg tmp = dst; - boolean need_tmp = (dst.dw1.bits.writemask != 0xf || - dst.file != BRW_GENERAL_REGISTER_FILE); - - if (need_tmp) - tmp = get_tmp(c); - - brw_math(p, - tmp, - function, - BRW_MATH_SATURATE_NONE, - 2, - arg0, - BRW_MATH_DATA_SCALAR, - precision); - - if (need_tmp) { - brw_MOV(p, dst, tmp); - release_tmp(c, tmp); - } -} - -static void emit_math2( struct brw_vs_compile *c, - unsigned function, - struct brw_reg dst, - struct brw_reg arg0, - struct brw_reg arg1, - unsigned precision) -{ - struct brw_compile *p = &c->func; - struct brw_reg tmp = dst; - boolean need_tmp = (dst.dw1.bits.writemask != 0xf || - dst.file != BRW_GENERAL_REGISTER_FILE); - - if (need_tmp) - tmp = get_tmp(c); - - brw_MOV(p, brw_message_reg(3), arg1); - - brw_math(p, - tmp, - function, - BRW_MATH_SATURATE_NONE, - 2, - arg0, - BRW_MATH_DATA_SCALAR, - precision); - - if (need_tmp) { - brw_MOV(p, dst, tmp); - release_tmp(c, tmp); - } -} - - - -static void emit_exp_noalias( struct brw_vs_compile *c, - struct brw_reg dst, - struct brw_reg arg0 ) -{ - struct brw_compile *p = &c->func; - - - if (dst.dw1.bits.writemask & TGSI_WRITEMASK_X) { - struct brw_reg tmp = get_tmp(c); - struct brw_reg tmp_d = retype(tmp, BRW_REGISTER_TYPE_D); - - /* tmp_d = floor(arg0.x) */ - brw_RNDD(p, tmp_d, brw_swizzle1(arg0, 0)); - - /* result[0] = 2.0 ^ tmp */ - - /* Adjust exponent for floating point: - * exp += 127 - */ - brw_ADD(p, brw_writemask(tmp_d, TGSI_WRITEMASK_X), tmp_d, brw_imm_d(127)); - - /* Install exponent and sign. - * Excess drops off the edge: - */ - brw_SHL(p, brw_writemask(retype(dst, BRW_REGISTER_TYPE_D), TGSI_WRITEMASK_X), - tmp_d, brw_imm_d(23)); - - release_tmp(c, tmp); - } - - if (dst.dw1.bits.writemask & TGSI_WRITEMASK_Y) { - /* result[1] = arg0.x - floor(arg0.x) */ - brw_FRC(p, brw_writemask(dst, TGSI_WRITEMASK_Y), brw_swizzle1(arg0, 0)); - } - - if (dst.dw1.bits.writemask & TGSI_WRITEMASK_Z) { - /* As with the LOG instruction, we might be better off just - * doing a taylor expansion here, seeing as we have to do all - * the prep work. - * - * If mathbox partial precision is too low, consider also: - * result[3] = result[0] * EXP(result[1]) - */ - emit_math1(c, - BRW_MATH_FUNCTION_EXP, - brw_writemask(dst, TGSI_WRITEMASK_Z), - brw_swizzle1(arg0, 0), - BRW_MATH_PRECISION_PARTIAL); - } - - if (dst.dw1.bits.writemask & TGSI_WRITEMASK_W) { - /* result[3] = 1.0; */ - brw_MOV(p, brw_writemask(dst, TGSI_WRITEMASK_W), brw_imm_f(1)); - } -} - - -static void emit_log_noalias( struct brw_vs_compile *c, - struct brw_reg dst, - struct brw_reg arg0 ) -{ - struct brw_compile *p = &c->func; - struct brw_reg tmp = dst; - struct brw_reg tmp_ud = retype(tmp, BRW_REGISTER_TYPE_UD); - struct brw_reg arg0_ud = retype(arg0, BRW_REGISTER_TYPE_UD); - boolean need_tmp = (dst.dw1.bits.writemask != 0xf || - dst.file != BRW_GENERAL_REGISTER_FILE); - - if (need_tmp) { - tmp = get_tmp(c); - tmp_ud = retype(tmp, BRW_REGISTER_TYPE_UD); - } - - /* Perform mant = frexpf(fabsf(x), &exp), adjust exp and mnt - * according to spec: - * - * These almost look likey they could be joined up, but not really - * practical: - * - * result[0].f = (x.i & ((1<<31)-1) >> 23) - 127 - * result[1].i = (x.i & ((1<<23)-1) + (127<<23) - */ - if (dst.dw1.bits.writemask & TGSI_WRITEMASK_XZ) { - brw_AND(p, - brw_writemask(tmp_ud, TGSI_WRITEMASK_X), - brw_swizzle1(arg0_ud, 0), - brw_imm_ud((1U<<31)-1)); - - brw_SHR(p, - brw_writemask(tmp_ud, TGSI_WRITEMASK_X), - tmp_ud, - brw_imm_ud(23)); - - brw_ADD(p, - brw_writemask(tmp, TGSI_WRITEMASK_X), - retype(tmp_ud, BRW_REGISTER_TYPE_D), /* does it matter? */ - brw_imm_d(-127)); - } - - if (dst.dw1.bits.writemask & TGSI_WRITEMASK_YZ) { - brw_AND(p, - brw_writemask(tmp_ud, TGSI_WRITEMASK_Y), - brw_swizzle1(arg0_ud, 0), - brw_imm_ud((1<<23)-1)); - - brw_OR(p, - brw_writemask(tmp_ud, TGSI_WRITEMASK_Y), - tmp_ud, - brw_imm_ud(127<<23)); - } - - if (dst.dw1.bits.writemask & TGSI_WRITEMASK_Z) { - /* result[2] = result[0] + LOG2(result[1]); */ - - /* Why bother? The above is just a hint how to do this with a - * taylor series. Maybe we *should* use a taylor series as by - * the time all the above has been done it's almost certainly - * quicker than calling the mathbox, even with low precision. - * - * Options are: - * - result[0] + mathbox.LOG2(result[1]) - * - mathbox.LOG2(arg0.x) - * - result[0] + inline_taylor_approx(result[1]) - */ - emit_math1(c, - BRW_MATH_FUNCTION_LOG, - brw_writemask(tmp, TGSI_WRITEMASK_Z), - brw_swizzle1(tmp, 1), - BRW_MATH_PRECISION_FULL); - - brw_ADD(p, - brw_writemask(tmp, TGSI_WRITEMASK_Z), - brw_swizzle1(tmp, 2), - brw_swizzle1(tmp, 0)); - } - - if (dst.dw1.bits.writemask & TGSI_WRITEMASK_W) { - /* result[3] = 1.0; */ - brw_MOV(p, brw_writemask(tmp, TGSI_WRITEMASK_W), brw_imm_f(1)); - } - - if (need_tmp) { - brw_MOV(p, dst, tmp); - release_tmp(c, tmp); - } -} - - - - -/* Need to unalias - consider swizzles: r0 = DST r0.xxxx r1 - */ -static void emit_dst_noalias( struct brw_vs_compile *c, - struct brw_reg dst, - struct brw_reg arg0, - struct brw_reg arg1) -{ - struct brw_compile *p = &c->func; - - /* There must be a better way to do this: - */ - if (dst.dw1.bits.writemask & TGSI_WRITEMASK_X) - brw_MOV(p, brw_writemask(dst, TGSI_WRITEMASK_X), brw_imm_f(1.0)); - if (dst.dw1.bits.writemask & TGSI_WRITEMASK_Y) - brw_MUL(p, brw_writemask(dst, TGSI_WRITEMASK_Y), arg0, arg1); - if (dst.dw1.bits.writemask & TGSI_WRITEMASK_Z) - brw_MOV(p, brw_writemask(dst, TGSI_WRITEMASK_Z), arg0); - if (dst.dw1.bits.writemask & TGSI_WRITEMASK_W) - brw_MOV(p, brw_writemask(dst, TGSI_WRITEMASK_W), arg1); -} - -static void emit_xpd( struct brw_compile *p, - struct brw_reg dst, - struct brw_reg t, - struct brw_reg u) -{ - brw_MUL(p, brw_null_reg(), brw_swizzle(t, 1,2,0,3), brw_swizzle(u,2,0,1,3)); - brw_MAC(p, dst, negate(brw_swizzle(t, 2,0,1,3)), brw_swizzle(u,1,2,0,3)); -} - - - -static void emit_lit_noalias( struct brw_vs_compile *c, - struct brw_reg dst, - struct brw_reg arg0 ) -{ - struct brw_compile *p = &c->func; - struct brw_instruction *if_insn; - struct brw_reg tmp = dst; - boolean need_tmp = (dst.file != BRW_GENERAL_REGISTER_FILE); - - if (need_tmp) - tmp = get_tmp(c); - - brw_MOV(p, brw_writemask(dst, TGSI_WRITEMASK_YZ), brw_imm_f(0)); - brw_MOV(p, brw_writemask(dst, TGSI_WRITEMASK_XW), brw_imm_f(1)); - - /* Need to use BRW_EXECUTE_8 and also do an 8-wide compare in order - * to get all channels active inside the IF. In the clipping code - * we run with NoMask, so it's not an option and we can use - * BRW_EXECUTE_1 for all comparisions. - */ - brw_CMP(p, brw_null_reg(), BRW_CONDITIONAL_G, brw_swizzle1(arg0,0), brw_imm_f(0)); - if_insn = brw_IF(p, BRW_EXECUTE_8); - { - brw_MOV(p, brw_writemask(dst, TGSI_WRITEMASK_Y), brw_swizzle1(arg0,0)); - - brw_CMP(p, brw_null_reg(), BRW_CONDITIONAL_G, brw_swizzle1(arg0,1), brw_imm_f(0)); - brw_MOV(p, brw_writemask(tmp, TGSI_WRITEMASK_Z), brw_swizzle1(arg0,1)); - brw_set_predicate_control(p, BRW_PREDICATE_NONE); - - emit_math2(c, - BRW_MATH_FUNCTION_POW, - brw_writemask(dst, TGSI_WRITEMASK_Z), - brw_swizzle1(tmp, 2), - brw_swizzle1(arg0, 3), - BRW_MATH_PRECISION_PARTIAL); - } - - brw_ENDIF(p, if_insn); -} - - - - - -/* TODO: relative addressing! - */ -static struct brw_reg get_reg( struct brw_vs_compile *c, - unsigned file, - unsigned index ) -{ - switch (file) { - case TGSI_FILE_TEMPORARY: - case TGSI_FILE_INPUT: - case TGSI_FILE_OUTPUT: - assert(c->regs[file][index].nr != 0); - return c->regs[file][index]; - case TGSI_FILE_CONSTANT: - assert(c->regs[TGSI_FILE_CONSTANT][index + c->prog_data.num_imm].nr != 0); - return c->regs[TGSI_FILE_CONSTANT][index + c->prog_data.num_imm]; - case TGSI_FILE_IMMEDIATE: - assert(c->regs[TGSI_FILE_CONSTANT][index].nr != 0); - return c->regs[TGSI_FILE_CONSTANT][index]; - case TGSI_FILE_ADDRESS: - assert(index == 0); - return c->regs[file][index]; - - case TGSI_FILE_NULL: /* undef values */ - return brw_null_reg(); - - default: - assert(0); - return brw_null_reg(); - } -} - - - -static struct brw_reg deref( struct brw_vs_compile *c, - struct brw_reg arg, - int offset) -{ - struct brw_compile *p = &c->func; - struct brw_reg tmp = vec4(get_tmp(c)); - struct brw_reg vp_address = retype(vec1(get_reg(c, TGSI_FILE_ADDRESS, 0)), BRW_REGISTER_TYPE_UW); - unsigned byte_offset = arg.nr * 32 + arg.subnr + offset * 16; - struct brw_reg indirect = brw_vec4_indirect(0,0); - - { - brw_push_insn_state(p); - brw_set_access_mode(p, BRW_ALIGN_1); - - /* This is pretty clunky - load the address register twice and - * fetch each 4-dword value in turn. There must be a way to do - * this in a single pass, but I couldn't get it to work. - */ - brw_ADD(p, brw_address_reg(0), vp_address, brw_imm_d(byte_offset)); - brw_MOV(p, tmp, indirect); - - brw_ADD(p, brw_address_reg(0), suboffset(vp_address, 8), brw_imm_d(byte_offset)); - brw_MOV(p, suboffset(tmp, 4), indirect); - - brw_pop_insn_state(p); - } - - return vec8(tmp); -} - - -static void emit_arl( struct brw_vs_compile *c, - struct brw_reg dst, - struct brw_reg arg0 ) -{ - struct brw_compile *p = &c->func; - struct brw_reg tmp = dst; - boolean need_tmp = (dst.file != BRW_GENERAL_REGISTER_FILE); - - if (need_tmp) - tmp = get_tmp(c); - - brw_RNDD(p, tmp, arg0); - brw_MUL(p, dst, tmp, brw_imm_d(16)); - - if (need_tmp) - release_tmp(c, tmp); -} - - -/* Will return mangled results for SWZ op. The emit_swz() function - * ignores this result and recalculates taking extended swizzles into - * account. - */ -static struct brw_reg get_arg( struct brw_vs_compile *c, - struct tgsi_src_register *src ) -{ - struct brw_reg reg; - - if (src->File == TGSI_FILE_NULL) - return brw_null_reg(); - -#if 0 - if (src->RelAddr) - reg = deref(c, c->regs[PROGRAM_STATE_VAR][0], src->Index); - else -#endif - reg = get_reg(c, src->File, src->Index); - - /* Convert 3-bit swizzle to 2-bit. - */ - reg.dw1.bits.swizzle = BRW_SWIZZLE4(src->SwizzleX, - src->SwizzleY, - src->SwizzleZ, - src->SwizzleW); - - /* Note this is ok for non-swizzle instructions: - */ - reg.negate = src->Negate ? 1 : 0; - - return reg; -} - - -static struct brw_reg get_dst( struct brw_vs_compile *c, - const struct tgsi_dst_register *dst ) -{ - struct brw_reg reg = get_reg(c, dst->File, dst->Index); - - reg.dw1.bits.writemask = dst->WriteMask; - - return reg; -} - - - - -static void emit_swz( struct brw_vs_compile *c, - struct brw_reg dst, - struct tgsi_src_register src ) -{ - struct brw_compile *p = &c->func; - unsigned zeros_mask = 0; - unsigned ones_mask = 0; - unsigned src_mask = 0; - ubyte src_swz[4]; - boolean need_tmp = (src.Negate && - dst.file != BRW_GENERAL_REGISTER_FILE); - struct brw_reg tmp = dst; - unsigned i; - - if (need_tmp) - tmp = get_tmp(c); - - for (i = 0; i < 4; i++) { - if (dst.dw1.bits.writemask & (1<<i)) { - ubyte s = 0; - switch(i) { - case 0: - s = src.SwizzleX; - break; - s = src.SwizzleY; - case 1: - break; - s = src.SwizzleZ; - case 2: - break; - s = src.SwizzleW; - case 3: - break; - } - switch (s) { - case TGSI_SWIZZLE_X: - case TGSI_SWIZZLE_Y: - case TGSI_SWIZZLE_Z: - case TGSI_SWIZZLE_W: - src_mask |= 1<<i; - src_swz[i] = s; - break; - case TGSI_EXTSWIZZLE_ZERO: - zeros_mask |= 1<<i; - break; - case TGSI_EXTSWIZZLE_ONE: - ones_mask |= 1<<i; - break; - } - } - } - - /* Do src first, in case dst aliases src: - */ - if (src_mask) { - struct brw_reg arg0; - -#if 0 - if (src.RelAddr) - arg0 = deref(c, c->regs[PROGRAM_STATE_VAR][0], src.Index); - else -#endif - arg0 = get_reg(c, src.File, src.Index); - - arg0 = brw_swizzle(arg0, - src_swz[0], src_swz[1], - src_swz[2], src_swz[3]); - - brw_MOV(p, brw_writemask(tmp, src_mask), arg0); - } - - if (zeros_mask) - brw_MOV(p, brw_writemask(tmp, zeros_mask), brw_imm_f(0)); - - if (ones_mask) - brw_MOV(p, brw_writemask(tmp, ones_mask), brw_imm_f(1)); - - if (src.Negate) - brw_MOV(p, brw_writemask(tmp, src.Negate), negate(tmp)); - - if (need_tmp) { - brw_MOV(p, dst, tmp); - release_tmp(c, tmp); - } -} - - - -/* Post-vertex-program processing. Send the results to the URB. - */ -static void emit_vertex_write( struct brw_vs_compile *c, struct brw_prog_info *info) -{ - struct brw_compile *p = &c->func; - struct brw_reg m0 = brw_message_reg(0); - struct brw_reg pos = c->regs[TGSI_FILE_OUTPUT][info->pos_idx]; - struct brw_reg ndc; - - if (c->key.copy_edgeflag) { - brw_MOV(p, - get_reg(c, TGSI_FILE_OUTPUT, info->result_edge_idx), - get_reg(c, TGSI_FILE_INPUT, info->edge_flag_idx)); - } - - - /* Build ndc coords? TODO: Shortcircuit when w is known to be one. - */ - if (!c->key.know_w_is_one) { - ndc = get_tmp(c); - emit_math1(c, BRW_MATH_FUNCTION_INV, ndc, brw_swizzle1(pos, 3), BRW_MATH_PRECISION_FULL); - brw_MUL(p, brw_writemask(ndc, TGSI_WRITEMASK_XYZ), pos, ndc); - } - else { - ndc = pos; - } - - /* This includes the workaround for -ve rhw, so is no longer an - * optional step: - */ - if (info->writes_psize || - c->key.nr_userclip || - !c->key.know_w_is_one) - { - struct brw_reg header1 = retype(get_tmp(c), BRW_REGISTER_TYPE_UD); - unsigned i; - - brw_MOV(p, header1, brw_imm_ud(0)); - - brw_set_access_mode(p, BRW_ALIGN_16); - - if (info->writes_psize) { - struct brw_reg psiz = c->regs[TGSI_FILE_OUTPUT][info->psize_idx]; - brw_MUL(p, brw_writemask(header1, TGSI_WRITEMASK_W), - brw_swizzle1(psiz, 0), brw_imm_f(1<<11)); - brw_AND(p, brw_writemask(header1, TGSI_WRITEMASK_W), header1, - brw_imm_ud(0x7ff<<8)); - } - - - for (i = 0; i < c->key.nr_userclip; i++) { - brw_set_conditionalmod(p, BRW_CONDITIONAL_L); - brw_DP4(p, brw_null_reg(), pos, c->userplane[i]); - brw_OR(p, brw_writemask(header1, TGSI_WRITEMASK_W), header1, brw_imm_ud(1<<i)); - brw_set_predicate_control(p, BRW_PREDICATE_NONE); - } - - - /* i965 clipping workaround: - * 1) Test for -ve rhw - * 2) If set, - * set ndc = (0,0,0,0) - * set ucp[6] = 1 - * - * Later, clipping will detect ucp[6] and ensure the primitive is - * clipped against all fixed planes. - */ - if (!c->key.know_w_is_one) { - brw_CMP(p, - vec8(brw_null_reg()), - BRW_CONDITIONAL_L, - brw_swizzle1(ndc, 3), - brw_imm_f(0)); - - brw_OR(p, brw_writemask(header1, TGSI_WRITEMASK_W), header1, brw_imm_ud(1<<6)); - brw_MOV(p, ndc, brw_imm_f(0)); - brw_set_predicate_control(p, BRW_PREDICATE_NONE); - } - - brw_set_access_mode(p, BRW_ALIGN_1); /* why? */ - brw_MOV(p, retype(brw_message_reg(1), BRW_REGISTER_TYPE_UD), header1); - brw_set_access_mode(p, BRW_ALIGN_16); - - release_tmp(c, header1); - } - else { - brw_MOV(p, retype(brw_message_reg(1), BRW_REGISTER_TYPE_UD), brw_imm_ud(0)); - } - - - /* Emit the (interleaved) headers for the two vertices - an 8-reg - * of zeros followed by two sets of NDC coordinates: - */ - brw_set_access_mode(p, BRW_ALIGN_1); - brw_MOV(p, offset(m0, 2), ndc); - brw_MOV(p, offset(m0, 3), pos); - - - brw_urb_WRITE(p, - brw_null_reg(), /* dest */ - 0, /* starting mrf reg nr */ - c->r0, /* src */ - 0, /* allocate */ - 1, /* used */ - c->nr_outputs + 3, /* msg len */ - 0, /* response len */ - 1, /* eot */ - 1, /* writes complete */ - 0, /* urb destination offset */ - BRW_URB_SWIZZLE_INTERLEAVE); - -} - -static void -post_vs_emit( struct brw_vs_compile *c, struct brw_instruction *end_inst ) -{ - struct tgsi_parse_context parse; - const struct tgsi_token *tokens = c->vp->program.tokens; - tgsi_parse_init(&parse, tokens); - while (!tgsi_parse_end_of_tokens(&parse)) { - tgsi_parse_token(&parse); - if (parse.FullToken.Token.Type == TGSI_TOKEN_TYPE_INSTRUCTION) { -#if 0 - struct brw_instruction *brw_inst1, *brw_inst2; - const struct tgsi_full_instruction *inst1, *inst2; - int offset; - inst1 = &parse.FullToken.FullInstruction; - brw_inst1 = inst1->Data; - switch (inst1->Opcode) { - case TGSI_OPCODE_CAL: - case TGSI_OPCODE_BRA: - target_insn = inst1->BranchTarget; - inst2 = &c->vp->program.Base.Instructions[target_insn]; - brw_inst2 = inst2->Data; - offset = brw_inst2 - brw_inst1; - brw_set_src1(brw_inst1, brw_imm_d(offset*16)); - break; - case TGSI_OPCODE_END: - offset = end_inst - brw_inst1; - brw_set_src1(brw_inst1, brw_imm_d(offset*16)); - break; - default: - break; - } -#endif - } - } - tgsi_parse_free(&parse); -} - -static void process_declaration(const struct tgsi_full_declaration *decl, - struct brw_prog_info *info) -{ - int first = decl->DeclarationRange.First; - int last = decl->DeclarationRange.Last; - - switch(decl->Declaration.File) { - case TGSI_FILE_CONSTANT: - info->num_consts += last - first + 1; - break; - case TGSI_FILE_INPUT: { - } - break; - case TGSI_FILE_OUTPUT: { - assert(last == first); /* for now */ - if (decl->Declaration.Semantic) { - switch (decl->Semantic.SemanticName) { - case TGSI_SEMANTIC_POSITION: { - info->pos_idx = first; - } - break; - case TGSI_SEMANTIC_COLOR: - break; - case TGSI_SEMANTIC_BCOLOR: - break; - case TGSI_SEMANTIC_FOG: - break; - case TGSI_SEMANTIC_PSIZE: { - info->writes_psize = TRUE; - info->psize_idx = first; - } - break; - case TGSI_SEMANTIC_GENERIC: - break; - } - } - } - break; - case TGSI_FILE_TEMPORARY: { - info->num_temps += (last - first) + 1; - } - break; - case TGSI_FILE_SAMPLER: { - } - break; - case TGSI_FILE_ADDRESS: { - info->num_addrs += (last - first) + 1; - } - break; - case TGSI_FILE_IMMEDIATE: { - } - break; - case TGSI_FILE_NULL: { - } - break; - } -} - -static void process_instruction(struct brw_vs_compile *c, - struct tgsi_full_instruction *inst, - struct brw_prog_info *info) -{ - struct brw_reg args[3], dst; - struct brw_compile *p = &c->func; - /*struct brw_indirect stack_index = brw_indirect(0, 0);*/ - unsigned i; - unsigned index; - unsigned file; - /*FIXME: might not be the only one*/ - const struct tgsi_dst_register *dst_reg = &inst->FullDstRegisters[0].DstRegister; - /* - struct brw_instruction *if_inst[MAX_IFSN]; - unsigned insn, if_insn = 0; - */ - - for (i = 0; i < 3; i++) { - struct tgsi_full_src_register *src = &inst->FullSrcRegisters[i]; - index = src->SrcRegister.Index; - file = src->SrcRegister.File; - if (file == TGSI_FILE_OUTPUT && c->output_regs[index].used_in_src) - args[i] = c->output_regs[index].reg; - else - args[i] = get_arg(c, &src->SrcRegister); - } - - /* Get dest regs. Note that it is possible for a reg to be both - * dst and arg, given the static allocation of registers. So - * care needs to be taken emitting multi-operation instructions. - */ - index = dst_reg->Index; - file = dst_reg->File; - if (file == TGSI_FILE_OUTPUT && c->output_regs[index].used_in_src) - dst = c->output_regs[index].reg; - else - dst = get_dst(c, dst_reg); - - switch (inst->Instruction.Opcode) { - case TGSI_OPCODE_ABS: - brw_MOV(p, dst, brw_abs(args[0])); - break; - case TGSI_OPCODE_ADD: - brw_ADD(p, dst, args[0], args[1]); - break; - case TGSI_OPCODE_DP3: - brw_DP3(p, dst, args[0], args[1]); - break; - case TGSI_OPCODE_DP4: - brw_DP4(p, dst, args[0], args[1]); - break; - case TGSI_OPCODE_DPH: - brw_DPH(p, dst, args[0], args[1]); - break; - case TGSI_OPCODE_DST: - unalias2(c, dst, args[0], args[1], emit_dst_noalias); - break; - case TGSI_OPCODE_EXP: - unalias1(c, dst, args[0], emit_exp_noalias); - break; - case TGSI_OPCODE_EX2: - emit_math1(c, BRW_MATH_FUNCTION_EXP, dst, args[0], BRW_MATH_PRECISION_FULL); - break; - case TGSI_OPCODE_ARL: - emit_arl(c, dst, args[0]); - break; - case TGSI_OPCODE_FLR: - brw_RNDD(p, dst, args[0]); - break; - case TGSI_OPCODE_FRC: - brw_FRC(p, dst, args[0]); - break; - case TGSI_OPCODE_LOG: - unalias1(c, dst, args[0], emit_log_noalias); - break; - case TGSI_OPCODE_LG2: - emit_math1(c, BRW_MATH_FUNCTION_LOG, dst, args[0], BRW_MATH_PRECISION_FULL); - break; - case TGSI_OPCODE_LIT: - unalias1(c, dst, args[0], emit_lit_noalias); - break; - case TGSI_OPCODE_MAD: - brw_MOV(p, brw_acc_reg(), args[2]); - brw_MAC(p, dst, args[0], args[1]); - break; - case TGSI_OPCODE_MAX: - emit_max(p, dst, args[0], args[1]); - break; - case TGSI_OPCODE_MIN: - emit_min(p, dst, args[0], args[1]); - break; - case TGSI_OPCODE_MOV: - case TGSI_OPCODE_SWZ: -#if 0 - /* The args[0] value can't be used here as it won't have - * correctly encoded the full swizzle: - */ - emit_swz(c, dst, inst->SrcReg[0] ); -#endif - brw_MOV(p, dst, args[0]); - break; - case TGSI_OPCODE_MUL: - brw_MUL(p, dst, args[0], args[1]); - break; - case TGSI_OPCODE_POW: - emit_math2(c, BRW_MATH_FUNCTION_POW, dst, args[0], args[1], BRW_MATH_PRECISION_FULL); - break; - case TGSI_OPCODE_RCP: - emit_math1(c, BRW_MATH_FUNCTION_INV, dst, args[0], BRW_MATH_PRECISION_FULL); - break; - case TGSI_OPCODE_RSQ: - emit_math1(c, BRW_MATH_FUNCTION_RSQ, dst, args[0], BRW_MATH_PRECISION_FULL); - break; - - case TGSI_OPCODE_SEQ: - emit_seq(p, dst, args[0], args[1]); - break; - case TGSI_OPCODE_SNE: - emit_sne(p, dst, args[0], args[1]); - break; - case TGSI_OPCODE_SGE: - emit_sge(p, dst, args[0], args[1]); - break; - case TGSI_OPCODE_SGT: - emit_sgt(p, dst, args[0], args[1]); - break; - case TGSI_OPCODE_SLT: - emit_slt(p, dst, args[0], args[1]); - break; - case TGSI_OPCODE_SLE: - emit_sle(p, dst, args[0], args[1]); - break; - case TGSI_OPCODE_SUB: - brw_ADD(p, dst, args[0], negate(args[1])); - break; - case TGSI_OPCODE_XPD: - emit_xpd(p, dst, args[0], args[1]); - break; -#if 0 - case TGSI_OPCODE_IF: - assert(if_insn < MAX_IFSN); - if_inst[if_insn++] = brw_IF(p, BRW_EXECUTE_8); - break; - case TGSI_OPCODE_ELSE: - if_inst[if_insn-1] = brw_ELSE(p, if_inst[if_insn-1]); - break; - case TGSI_OPCODE_ENDIF: - assert(if_insn > 0); - brw_ENDIF(p, if_inst[--if_insn]); - break; - case TGSI_OPCODE_BRA: - brw_set_predicate_control(p, BRW_PREDICATE_NORMAL); - brw_ADD(p, brw_ip_reg(), brw_ip_reg(), brw_imm_d(1*16)); - brw_set_predicate_control_flag_value(p, 0xff); - break; - case TGSI_OPCODE_CAL: - brw_set_access_mode(p, BRW_ALIGN_1); - brw_ADD(p, deref_1uw(stack_index, 0), brw_ip_reg(), brw_imm_d(3*16)); - brw_set_access_mode(p, BRW_ALIGN_16); - brw_ADD(p, get_addr_reg(stack_index), - get_addr_reg(stack_index), brw_imm_d(4)); - inst->Data = &p->store[p->nr_insn]; - brw_ADD(p, brw_ip_reg(), brw_ip_reg(), brw_imm_d(1*16)); - break; -#endif - case TGSI_OPCODE_RET: -#if 0 - brw_ADD(p, get_addr_reg(stack_index), - get_addr_reg(stack_index), brw_imm_d(-4)); - brw_set_access_mode(p, BRW_ALIGN_1); - brw_MOV(p, brw_ip_reg(), deref_1uw(stack_index, 0)); - brw_set_access_mode(p, BRW_ALIGN_16); -#else - /*brw_ADD(p, brw_ip_reg(), brw_ip_reg(), brw_imm_d(1*16));*/ -#endif - break; - case TGSI_OPCODE_END: - brw_ADD(p, brw_ip_reg(), brw_ip_reg(), brw_imm_d(1*16)); - break; - case TGSI_OPCODE_BGNSUB: - case TGSI_OPCODE_ENDSUB: - break; - default: - debug_printf("Unsupport opcode %d in vertex shader\n", inst->Instruction.Opcode); - break; - } - - if (dst_reg->File == TGSI_FILE_OUTPUT - && dst_reg->Index != info->pos_idx - && c->output_regs[dst_reg->Index].used_in_src) - brw_MOV(p, get_dst(c, dst_reg), dst); - - release_tmps(c); -} - -/* Emit the fragment program instructions here. - */ -void brw_vs_emit(struct brw_vs_compile *c) -{ -#define MAX_IFSN 32 - struct brw_compile *p = &c->func; - struct brw_instruction *end_inst; - struct tgsi_parse_context parse; - struct brw_indirect stack_index = brw_indirect(0, 0); - const struct tgsi_token *tokens = c->vp->program.tokens; - struct brw_prog_info prog_info; - unsigned allocated_registers = 0; - memset(&prog_info, 0, sizeof(struct brw_prog_info)); - - brw_set_compression_control(p, BRW_COMPRESSION_NONE); - brw_set_access_mode(p, BRW_ALIGN_16); - - tgsi_parse_init(&parse, tokens); - /* Message registers can't be read, so copy the output into GRF register - if they are used in source registers */ - while (!tgsi_parse_end_of_tokens(&parse)) { - tgsi_parse_token(&parse); - unsigned i; - switch (parse.FullToken.Token.Type) { - case TGSI_TOKEN_TYPE_INSTRUCTION: { - const struct tgsi_full_instruction *inst = &parse.FullToken.FullInstruction; - for (i = 0; i < 3; ++i) { - const struct tgsi_src_register *src = &inst->FullSrcRegisters[i].SrcRegister; - unsigned index = src->Index; - unsigned file = src->File; - if (file == TGSI_FILE_OUTPUT) - c->output_regs[index].used_in_src = TRUE; - } - } - break; - default: - /* nothing */ - break; - } - } - tgsi_parse_free(&parse); - - tgsi_parse_init(&parse, tokens); - - while (!tgsi_parse_end_of_tokens(&parse)) { - tgsi_parse_token(&parse); - - switch (parse.FullToken.Token.Type) { - case TGSI_TOKEN_TYPE_DECLARATION: { - struct tgsi_full_declaration *decl = &parse.FullToken.FullDeclaration; - process_declaration(decl, &prog_info); - } - break; - case TGSI_TOKEN_TYPE_IMMEDIATE: { - struct tgsi_full_immediate *imm = &parse.FullToken.FullImmediate; - assert(imm->Immediate.NrTokens == 4 + 1); - c->prog_data.imm_buf[c->prog_data.num_imm][0] = imm->u[0].Float; - c->prog_data.imm_buf[c->prog_data.num_imm][1] = imm->u[1].Float; - c->prog_data.imm_buf[c->prog_data.num_imm][2] = imm->u[2].Float; - c->prog_data.imm_buf[c->prog_data.num_imm][3] = imm->u[3].Float; - c->prog_data.num_imm++; - } - break; - case TGSI_TOKEN_TYPE_INSTRUCTION: { - struct tgsi_full_instruction *inst = &parse.FullToken.FullInstruction; - if (!allocated_registers) { - /* first instruction (declerations finished). - * now that we know what vars are being used allocate - * registers for them.*/ - c->prog_data.num_consts = prog_info.num_consts; - c->prog_data.max_const = prog_info.num_consts + c->prog_data.num_imm; - brw_vs_alloc_regs(c, &prog_info); - - brw_set_access_mode(p, BRW_ALIGN_1); - brw_MOV(p, get_addr_reg(stack_index), brw_address(c->stack)); - brw_set_access_mode(p, BRW_ALIGN_16); - allocated_registers = 1; - } - process_instruction(c, inst, &prog_info); - } - break; - } - } - - end_inst = &p->store[p->nr_insn]; - emit_vertex_write(c, &prog_info); - post_vs_emit(c, end_inst); - tgsi_parse_free(&parse); - -} |