diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/gallium/drivers/freedreno/Makefile.sources | 1 | ||||
| -rw-r--r-- | src/gallium/drivers/freedreno/freedreno_screen.c | 5 | ||||
| -rw-r--r-- | src/gallium/drivers/freedreno/freedreno_util.h | 1 | ||||
| -rw-r--r-- | src/gallium/drivers/freedreno/ir3/ir3_cmdline.c | 24 | ||||
| -rw-r--r-- | src/gallium/drivers/freedreno/ir3/ir3_compiler.h | 3 | ||||
| -rw-r--r-- | src/gallium/drivers/freedreno/ir3/ir3_compiler_nir.c | 1717 | ||||
| -rw-r--r-- | src/gallium/drivers/freedreno/ir3/ir3_shader.c | 16 |
7 files changed, 1762 insertions, 5 deletions
diff --git a/src/gallium/drivers/freedreno/Makefile.sources b/src/gallium/drivers/freedreno/Makefile.sources index 1f22ce9c622..3224efc9994 100644 --- a/src/gallium/drivers/freedreno/Makefile.sources +++ b/src/gallium/drivers/freedreno/Makefile.sources @@ -121,6 +121,7 @@ ir3_SOURCES := \ ir3/instr-a3xx.h \ ir3/ir3.c \ ir3/ir3_compiler.c \ + ir3/ir3_compiler_nir.c \ ir3/ir3_compiler.h \ ir3/ir3_cp.c \ ir3/ir3_depth.c \ diff --git a/src/gallium/drivers/freedreno/freedreno_screen.c b/src/gallium/drivers/freedreno/freedreno_screen.c index 66fe0e571cf..1b89387678d 100644 --- a/src/gallium/drivers/freedreno/freedreno_screen.c +++ b/src/gallium/drivers/freedreno/freedreno_screen.c @@ -71,6 +71,7 @@ static const struct debug_named_value debug_options[] = { {"optdump", FD_DBG_OPTDUMP,"Dump shader DAG to .dot files"}, {"glsl120", FD_DBG_GLSL120,"Temporary flag to force GLSL 120 (rather than 130) on a3xx+"}, {"nocp", FD_DBG_NOCP, "Disable copy-propagation"}, + {"nir", FD_DBG_NIR, "Enable experimental NIR compiler"}, DEBUG_NAMED_VALUE_END }; @@ -345,6 +346,10 @@ fd_screen_get_shader_param(struct pipe_screen *pscreen, unsigned shader, case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS: return 16384; case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH: + /* for now, let someone else flatten if/else when using NIR: */ + if ((fd_mesa_debug & FD_DBG_NIR) && + (is_a3xx(screen) || is_a4xx(screen))) + return 0; return 8; /* XXX */ case PIPE_SHADER_CAP_MAX_INPUTS: case PIPE_SHADER_CAP_MAX_OUTPUTS: diff --git a/src/gallium/drivers/freedreno/freedreno_util.h b/src/gallium/drivers/freedreno/freedreno_util.h index b3076b9f5c6..2735ae41315 100644 --- a/src/gallium/drivers/freedreno/freedreno_util.h +++ b/src/gallium/drivers/freedreno/freedreno_util.h @@ -66,6 +66,7 @@ enum adreno_stencil_op fd_stencil_op(unsigned op); #define FD_DBG_OPTDUMP 0x0800 #define FD_DBG_GLSL120 0x1000 #define FD_DBG_NOCP 0x2000 +#define FD_DBG_NIR 0x4000 extern int fd_mesa_debug; extern bool fd_binning_enabled; diff --git a/src/gallium/drivers/freedreno/ir3/ir3_cmdline.c b/src/gallium/drivers/freedreno/ir3/ir3_cmdline.c index 81d0180933f..d0517aab8ce 100644 --- a/src/gallium/drivers/freedreno/ir3/ir3_cmdline.c +++ b/src/gallium/drivers/freedreno/ir3/ir3_cmdline.c @@ -215,6 +215,7 @@ static void print_usage(void) printf(" --saturate-t MASK - bitmask of samplers to saturate T coord\n"); printf(" --saturate-r MASK - bitmask of samplers to saturate R coord\n"); printf(" --nocp - disable copy propagation\n"); + printf(" --nir - use NIR compiler\n"); printf(" --help - show this message\n"); } @@ -229,6 +230,7 @@ int main(int argc, char **argv) const char *info; void *ptr; size_t size; + int use_nir = 0; fd_mesa_debug |= FD_DBG_DISASM; @@ -293,6 +295,11 @@ int main(int argc, char **argv) n++; continue; } + if (!strcmp(argv[n], "--nir")) { + use_nir = true; + n++; + continue; + } if (!strcmp(argv[n], "--help")) { print_usage(); @@ -333,8 +340,13 @@ int main(int argc, char **argv) break; } - info = "compiler"; - ret = ir3_compile_shader(&v, toks, key, true); + if (use_nir) { + info = "NIR compiler"; + ret = ir3_compile_shader_nir(&v, toks, key); + } else { + info = "TGSI compiler"; + ret = ir3_compile_shader(&v, toks, key, true); + } if (ret) { reset_variant(&v, "compiler failed, trying without copy propagation!"); @@ -348,3 +360,11 @@ int main(int argc, char **argv) } dump_info(&v, info); } + +void _mesa_error_no_memory(const char *caller); + +void +_mesa_error_no_memory(const char *caller) +{ + fprintf(stderr, "Mesa error: out of memory in %s", caller); +} diff --git a/src/gallium/drivers/freedreno/ir3/ir3_compiler.h b/src/gallium/drivers/freedreno/ir3/ir3_compiler.h index 6459482c007..ed9637bd2d0 100644 --- a/src/gallium/drivers/freedreno/ir3/ir3_compiler.h +++ b/src/gallium/drivers/freedreno/ir3/ir3_compiler.h @@ -32,6 +32,9 @@ #include "ir3_shader.h" +int ir3_compile_shader_nir(struct ir3_shader_variant *so, + const struct tgsi_token *tokens, struct ir3_shader_key key); + int ir3_compile_shader(struct ir3_shader_variant *so, const struct tgsi_token *tokens, struct ir3_shader_key key, bool cp); diff --git a/src/gallium/drivers/freedreno/ir3/ir3_compiler_nir.c b/src/gallium/drivers/freedreno/ir3/ir3_compiler_nir.c new file mode 100644 index 00000000000..fdf814f26ee --- /dev/null +++ b/src/gallium/drivers/freedreno/ir3/ir3_compiler_nir.c @@ -0,0 +1,1717 @@ +/* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */ + +/* + * Copyright (C) 2015 Rob Clark <[email protected]> + * + * 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 AUTHORS OR COPYRIGHT HOLDERS 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: + * Rob Clark <[email protected]> + */ + +#include <stdarg.h> + +#include "pipe/p_state.h" +#include "util/u_string.h" +#include "util/u_memory.h" +#include "util/u_inlines.h" +#include "tgsi/tgsi_lowering.h" +#include "tgsi/tgsi_strings.h" + +#include "nir/tgsi_to_nir.h" +#include "glsl/shader_enums.h" + +#include "freedreno_util.h" + +#include "ir3_compiler.h" +#include "ir3_shader.h" + +#include "instr-a3xx.h" +#include "ir3.h" + + +static struct ir3_instruction * create_immed(struct ir3_block *block, uint32_t val); + +struct ir3_compile { + const struct tgsi_token *tokens; + struct nir_shader *s; + + struct ir3 *ir; + struct ir3_shader_variant *so; + + /* bitmask of which samplers are integer: */ + uint16_t integer_s; + + struct ir3_block *block; + + /* For fragment shaders, from the hw perspective the only + * actual input is r0.xy position register passed to bary.f. + * But TGSI doesn't know that, it still declares things as + * IN[] registers. So we do all the input tracking normally + * and fix things up after compile_instructions() + * + * NOTE that frag_pos is the hardware position (possibly it + * is actually an index or tag or some such.. it is *not* + * values that can be directly used for gl_FragCoord..) + */ + struct ir3_instruction *frag_pos, *frag_face, *frag_coord[4]; + + /* For vertex shaders, keep track of the system values sources */ + struct ir3_instruction *vertex_id, *basevertex, *instance_id; + + /* mapping from nir_register to defining instruction: */ + struct hash_table *def_ht; + + /* a common pattern for indirect addressing is to request the + * same address register multiple times. To avoid generating + * duplicate instruction sequences (which our backend does not + * try to clean up, since that should be done as the NIR stage) + * we cache the address value generated for a given src value: + */ + struct hash_table *addr_ht; + + /* for calculating input/output positions/linkages: */ + unsigned next_inloc; + + /* a4xx (at least patchlevel 0) cannot seem to flat-interpolate + * so we need to use ldlv.u32 to load the varying directly: + */ + bool flat_bypass; + + /* for looking up which system value is which */ + unsigned sysval_semantics[8]; + + /* list of kill instructions: */ + struct ir3_instruction *kill[16]; + unsigned int kill_count; + + /* set if we encounter something we can't handle yet, so we + * can bail cleanly and fallback to TGSI compiler f/e + */ + bool error; +}; + + +static struct nir_shader *to_nir(const struct tgsi_token *tokens) +{ + struct nir_shader_compiler_options options = { + .lower_fpow = true, + .lower_fsat = true, + .lower_scmp = true, + .lower_flrp = true, + .native_integers = true, + }; + bool progress; + + struct nir_shader *s = tgsi_to_nir(tokens, &options); + + if (fd_mesa_debug & FD_DBG_OPTMSGS) { + debug_printf("----------------------\n"); + nir_print_shader(s, stdout); + debug_printf("----------------------\n"); + } + + nir_opt_global_to_local(s); + nir_convert_to_ssa(s); + nir_lower_idiv(s); + + do { + progress = false; + + nir_lower_vars_to_ssa(s); + nir_lower_alu_to_scalar(s); + + progress |= nir_copy_prop(s); + progress |= nir_opt_dce(s); + progress |= nir_opt_cse(s); + progress |= nir_opt_peephole_select(s); + progress |= nir_opt_algebraic(s); + progress |= nir_opt_constant_folding(s); + + } while (progress); + + nir_remove_dead_variables(s); + nir_validate_shader(s); + + if (fd_mesa_debug & FD_DBG_OPTMSGS) { + debug_printf("----------------------\n"); + nir_print_shader(s, stdout); + debug_printf("----------------------\n"); + } + + return s; +} + +/* TODO nir doesn't lower everything for us yet, but ideally it would: */ +static const struct tgsi_token * +lower_tgsi(const struct tgsi_token *tokens, struct ir3_shader_variant *so) +{ + struct tgsi_shader_info info; + struct tgsi_lowering_config lconfig = { + .color_two_side = so->key.color_two_side, + .lower_FRC = true, + }; + + switch (so->type) { + case SHADER_FRAGMENT: + case SHADER_COMPUTE: + lconfig.saturate_s = so->key.fsaturate_s; + lconfig.saturate_t = so->key.fsaturate_t; + lconfig.saturate_r = so->key.fsaturate_r; + break; + case SHADER_VERTEX: + lconfig.saturate_s = so->key.vsaturate_s; + lconfig.saturate_t = so->key.vsaturate_t; + lconfig.saturate_r = so->key.vsaturate_r; + break; + } + + if (!so->shader) { + /* hack for standalone compiler which does not have + * screen/context: + */ + } else if (ir3_shader_gpuid(so->shader) >= 400) { + /* a4xx seems to have *no* sam.p */ + lconfig.lower_TXP = ~0; /* lower all txp */ + } else { + /* a3xx just needs to avoid sam.p for 3d tex */ + lconfig.lower_TXP = (1 << TGSI_TEXTURE_3D); + } + + return tgsi_transform_lowering(&lconfig, tokens, &info); +} + +static struct ir3_compile * +compile_init(struct ir3_shader_variant *so, + const struct tgsi_token *tokens) +{ + struct ir3_compile *ctx = rzalloc(NULL, struct ir3_compile); + const struct tgsi_token *lowered_tokens; + + if (!so->shader) { + /* hack for standalone compiler which does not have + * screen/context: + */ + } else if (ir3_shader_gpuid(so->shader) >= 400) { + /* need special handling for "flat" */ + ctx->flat_bypass = true; + } else { + /* no special handling for "flat" */ + ctx->flat_bypass = false; + } + + switch (so->type) { + case SHADER_FRAGMENT: + case SHADER_COMPUTE: + ctx->integer_s = so->key.finteger_s; + break; + case SHADER_VERTEX: + ctx->integer_s = so->key.vinteger_s; + break; + } + + ctx->ir = so->ir; + ctx->so = so; + ctx->next_inloc = 8; + ctx->def_ht = _mesa_hash_table_create(ctx, + _mesa_hash_pointer, _mesa_key_pointer_equal); + ctx->addr_ht = _mesa_hash_table_create(ctx, + _mesa_hash_pointer, _mesa_key_pointer_equal); + + lowered_tokens = lower_tgsi(tokens, so); + if (!lowered_tokens) + lowered_tokens = tokens; + ctx->s = to_nir(lowered_tokens); + + if (lowered_tokens != tokens) + free((void *)lowered_tokens); + + so->first_immediate = ctx->s->num_uniforms; + + return ctx; +} + +static void +compile_error(struct ir3_compile *ctx, const char *format, ...) +{ + va_list ap; + va_start(ap, format); + _debug_vprintf(format, ap); + va_end(ap); + nir_print_shader(ctx->s, stdout); + ctx->error = true; +} + +#define compile_assert(ctx, cond) do { \ + if (!(cond)) compile_error((ctx), "failed assert: "#cond"\n"); \ + } while (0) + +static void +compile_free(struct ir3_compile *ctx) +{ + ralloc_free(ctx); +} + +/* allocate a n element value array (to be populated by caller) and + * insert in def_ht + */ +static struct ir3_instruction ** +__get_dst(struct ir3_compile *ctx, void *key, unsigned n) +{ + struct ir3_instruction **value = + ralloc_array(ctx->def_ht, struct ir3_instruction *, n); + _mesa_hash_table_insert(ctx->def_ht, key, value); + return value; +} + +static struct ir3_instruction ** +get_dst(struct ir3_compile *ctx, nir_dest *dst, unsigned n) +{ + if (dst->is_ssa) { + return __get_dst(ctx, &dst->ssa, n); + } else { + return __get_dst(ctx, dst->reg.reg, n); + } +} + +static struct ir3_instruction ** +get_dst_ssa(struct ir3_compile *ctx, nir_ssa_def *dst, unsigned n) +{ + return __get_dst(ctx, dst, n); +} + +static struct ir3_instruction ** +get_src(struct ir3_compile *ctx, nir_src *src) +{ + struct hash_entry *entry; + if (src->is_ssa) { + entry = _mesa_hash_table_search(ctx->def_ht, src->ssa); + } else { + entry = _mesa_hash_table_search(ctx->def_ht, src->reg.reg); + } + compile_assert(ctx, entry); + return entry->data; +} + +static struct ir3_instruction * +create_immed(struct ir3_block *block, uint32_t val) +{ + struct ir3_instruction *mov; + + mov = ir3_instr_create(block, 1, 0); + mov->cat1.src_type = TYPE_U32; + mov->cat1.dst_type = TYPE_U32; + ir3_reg_create(mov, 0, 0); + ir3_reg_create(mov, 0, IR3_REG_IMMED)->uim_val = val; + + return mov; +} + +static struct ir3_instruction * +create_addr(struct ir3_block *block, struct ir3_instruction *src) +{ + struct ir3_instruction *instr, *immed; + + /* TODO in at least some cases, the backend could probably be + * made clever enough to propagate IR3_REG_HALF.. + */ + instr = ir3_COV(block, src, TYPE_U32, TYPE_S16); + instr->regs[0]->flags |= IR3_REG_HALF; + + immed = create_immed(block, 2); + immed->regs[0]->flags |= IR3_REG_HALF; + + instr = ir3_SHL_B(block, instr, 0, immed, 0); + instr->regs[0]->flags |= IR3_REG_HALF; + instr->regs[1]->flags |= IR3_REG_HALF; + + instr = ir3_MOV(block, instr, TYPE_S16); + instr->regs[0]->flags |= IR3_REG_ADDR | IR3_REG_HALF; + instr->regs[1]->flags |= IR3_REG_HALF; + + return instr; +} + +/* caches addr values to avoid generating multiple cov/shl/mova + * sequences for each use of a given NIR level src as address + */ +static struct ir3_instruction * +get_addr(struct ir3_compile *ctx, struct ir3_instruction *src) +{ + struct ir3_instruction *addr; + struct hash_entry *entry; + entry = _mesa_hash_table_search(ctx->addr_ht, src); + if (entry) + return entry->data; + + /* TODO do we need to cache per block? */ + addr = create_addr(ctx->block, src); + _mesa_hash_table_insert(ctx->addr_ht, src, addr); + + return addr; +} + +static struct ir3_instruction * +create_uniform(struct ir3_block *block, unsigned n) +{ + struct ir3_instruction *mov; + + mov = ir3_instr_create(block, 1, 0); + /* TODO get types right? */ + mov->cat1.src_type = TYPE_F32; + mov->cat1.dst_type = TYPE_F32; + ir3_reg_create(mov, 0, 0); + ir3_reg_create(mov, n, IR3_REG_CONST); + + return mov; +} + +static struct ir3_instruction * +create_uniform_indirect(struct ir3_block *block, unsigned n, + struct ir3_instruction *address) +{ + struct ir3_instruction *mov; + + mov = ir3_instr_create(block, 1, 0); + mov->cat1.src_type = TYPE_U32; + mov->cat1.dst_type = TYPE_U32; + ir3_reg_create(mov, 0, 0); + ir3_reg_create(mov, n, IR3_REG_CONST | IR3_REG_RELATIV); + mov->address = address; + + return mov; +} + +static struct ir3_instruction * +create_indirect(struct ir3_block *block, struct ir3_instruction **arr, + unsigned arrsz, unsigned n, struct ir3_instruction *address) +{ + struct ir3_instruction *mov, *collect; + struct ir3_register *src; + + collect = ir3_instr_create2(block, -1, OPC_META_FI, 1 + arrsz); + ir3_reg_create(collect, 0, 0); + for (unsigned i = 0; i < arrsz; i++) + ir3_reg_create(collect, 0, IR3_REG_SSA)->instr = arr[i]; + + mov = ir3_instr_create(block, 1, 0); + mov->cat1.src_type = TYPE_U32; + mov->cat1.dst_type = TYPE_U32; + ir3_reg_create(mov, 0, 0); + src = ir3_reg_create(mov, 0, IR3_REG_SSA | IR3_REG_RELATIV); + src->instr = collect; + src->size = arrsz; + mov->address = address; + + return mov; +} + +static struct ir3_instruction * +create_input(struct ir3_block *block, struct ir3_instruction *instr, + unsigned n) +{ + struct ir3_instruction *in; + + in = ir3_instr_create(block, -1, OPC_META_INPUT); + in->inout.block = block; + ir3_reg_create(in, n, 0); + if (instr) + ir3_reg_create(in, 0, IR3_REG_SSA)->instr = instr; + + return in; +} + +static struct ir3_instruction * +create_frag_input(struct ir3_compile *ctx, unsigned n, bool use_ldlv) +{ + struct ir3_block *block = ctx->block; + struct ir3_instruction *instr; + struct ir3_instruction *inloc = create_immed(block, n); + + if (use_ldlv) { + instr = ir3_LDLV(block, inloc, 0, create_immed(block, 1), 0); + instr->cat6.type = TYPE_U32; + instr->cat6.iim_val = 1; + } else { + instr = ir3_BARY_F(block, inloc, 0, ctx->frag_pos, 0); + instr->regs[2]->wrmask = 0x3; + } + + return instr; +} + +static struct ir3_instruction * +create_frag_coord(struct ir3_compile *ctx, unsigned comp) +{ + struct ir3_block *block = ctx->block; + struct ir3_instruction *instr; + + compile_assert(ctx, !ctx->frag_coord[comp]); + + ctx->frag_coord[comp] = create_input(ctx->block, NULL, 0); + + switch (comp) { + case 0: /* .x */ + case 1: /* .y */ + /* for frag_coord, we get unsigned values.. we need + * to subtract (integer) 8 and divide by 16 (right- + * shift by 4) then convert to float: + * + * add.s tmp, src, -8 + * shr.b tmp, tmp, 4 + * mov.u32f32 dst, tmp + * + */ + instr = ir3_ADD_S(block, ctx->frag_coord[comp], 0, + create_immed(block, -8), 0); + instr = ir3_SHR_B(block, instr, 0, + create_immed(block, 4), 0); + instr = ir3_COV(block, instr, TYPE_U32, TYPE_F32); + + return instr; + case 2: /* .z */ + case 3: /* .w */ + default: + /* seems that we can use these as-is: */ + return ctx->frag_coord[comp]; + } +} + +static struct ir3_instruction * +create_frag_face(struct ir3_compile *ctx, unsigned comp) +{ + struct ir3_block *block = ctx->block; + struct ir3_instruction *instr; + + switch (comp) { + case 0: /* .x */ + compile_assert(ctx, !ctx->frag_face); + + ctx->frag_face = create_input(block, NULL, 0); + + /* for faceness, we always get -1 or 0 (int).. but TGSI expects + * positive vs negative float.. and piglit further seems to + * expect -1.0 or 1.0: + * + * mul.s tmp, hr0.x, 2 + * add.s tmp, tmp, 1 + * mov.s32f32, dst, tmp + * + */ + instr = ir3_MUL_S(block, ctx->frag_face, 0, + create_immed(block, 2), 0); + instr = ir3_ADD_S(block, instr, 0, + create_immed(block, 1), 0); + instr = ir3_COV(block, instr, TYPE_S32, TYPE_F32); + + return instr; + case 1: /* .y */ + case 2: /* .z */ + return create_immed(block, fui(0.0)); + default: + case 3: /* .w */ + return create_immed(block, fui(1.0)); + } +} + +/* + * Adreno uses uint rather than having dedicated bool type, + * which (potentially) requires some conversion, in particular + * when using output of an bool instr to int input, or visa + * versa. + * + * | Adreno | NIR | + * -------+---------+-------+- + * true | 1 | ~0 | + * false | 0 | 0 | + * + * To convert from an adreno bool (uint) to nir, use: + * + * absneg.s dst, (neg)src + * + * To convert back in the other direction: + * + * absneg.s dst, (abs)arc + * + * The CP step can clean up the absneg.s that cancel each other + * out, and with a slight bit of extra cleverness (to recognize + * the instructions which produce either a 0 or 1) can eliminate + * the absneg.s's completely when an instruction that wants + * 0/1 consumes the result. For example, when a nir 'bcsel' + * consumes the result of 'feq'. So we should be able to get by + * without a boolean resolve step, and without incuring any + * extra penalty in instruction count. + */ + +/* NIR bool -> native (adreno): */ +static struct ir3_instruction * +ir3_b2n(struct ir3_block *block, struct ir3_instruction *instr) +{ + return ir3_ABSNEG_S(block, instr, IR3_REG_SABS); +} + +/* native (adreno) -> NIR bool: */ +static struct ir3_instruction * +ir3_n2b(struct ir3_block *block, struct ir3_instruction *instr) +{ + return ir3_ABSNEG_S(block, instr, IR3_REG_SNEG); +} + +/* + * alu/sfu instructions: + */ + +static void +emit_alu(struct ir3_compile *ctx, nir_alu_instr *alu) +{ + const nir_op_info *info = &nir_op_infos[alu->op]; + struct ir3_instruction **dst, *src[info->num_inputs]; + struct ir3_block *b = ctx->block; + + dst = get_dst(ctx, &alu->dest.dest, MAX2(info->output_size, 1)); + + /* Vectors are special in that they have non-scalarized writemasks, + * and just take the first swizzle channel for each argument in + * order into each writemask channel. + */ + if ((alu->op == nir_op_vec2) || + (alu->op == nir_op_vec3) || + (alu->op == nir_op_vec4)) { + + for (int i = 0; i < info->num_inputs; i++) { + nir_alu_src *asrc = &alu->src[i]; + + compile_assert(ctx, !asrc->abs); + compile_assert(ctx, !asrc->negate); + + src[i] = get_src(ctx, &asrc->src)[asrc->swizzle[0]]; + dst[i] = ir3_MOV(b, src[i], TYPE_U32); + } + + return; + } + + /* General case: We can just grab the one used channel per src. */ + for (int i = 0; i < info->num_inputs; i++) { + unsigned chan = ffs(alu->dest.write_mask) - 1; + nir_alu_src *asrc = &alu->src[i]; + + compile_assert(ctx, !asrc->abs); + compile_assert(ctx, !asrc->negate); + + src[i] = get_src(ctx, &asrc->src)[asrc->swizzle[chan]]; + } + + switch (alu->op) { + case nir_op_f2i: + dst[0] = ir3_COV(b, src[0], TYPE_F32, TYPE_S32); + break; + case nir_op_f2u: + dst[0] = ir3_COV(b, src[0], TYPE_F32, TYPE_U32); + break; + case nir_op_i2f: + dst[0] = ir3_COV(b, src[0], TYPE_S32, TYPE_F32); + break; + case nir_op_u2f: + dst[0] = ir3_COV(b, src[0], TYPE_U32, TYPE_F32); + break; + case nir_op_imov: + dst[0] = ir3_MOV(b, src[0], TYPE_S32); + break; + case nir_op_f2b: + dst[0] = ir3_CMPS_F(b, src[0], 0, create_immed(b, fui(0.0)), 0); + dst[0]->cat2.condition = IR3_COND_NE; + dst[0] = ir3_n2b(b, dst[0]); + break; + case nir_op_b2f: + dst[0] = ir3_COV(b, ir3_b2n(b, src[0]), TYPE_U32, TYPE_F32); + break; + case nir_op_b2i: + dst[0] = ir3_b2n(b, src[0]); + break; + case nir_op_i2b: + dst[0] = ir3_CMPS_S(b, src[0], 0, create_immed(b, 0), 0); + dst[0]->cat2.condition = IR3_COND_NE; + dst[0] = ir3_n2b(b, dst[0]); + break; + + case nir_op_fneg: + dst[0] = ir3_ABSNEG_F(b, src[0], IR3_REG_FNEG); + break; + case nir_op_fabs: + dst[0] = ir3_ABSNEG_F(b, src[0], IR3_REG_FABS); + break; + case nir_op_fmax: + dst[0] = ir3_MAX_F(b, src[0], 0, src[1], 0); + break; + case nir_op_fmin: + dst[0] = ir3_MIN_F(b, src[0], 0, src[1], 0); + break; + case nir_op_fmul: + dst[0] = ir3_MUL_F(b, src[0], 0, src[1], 0); + break; + case nir_op_fadd: + dst[0] = ir3_ADD_F(b, src[0], 0, src[1], 0); + break; + case nir_op_fsub: + dst[0] = ir3_ADD_F(b, src[0], 0, src[1], IR3_REG_FNEG); + break; + case nir_op_ffma: + dst[0] = ir3_MAD_F32(b, src[0], 0, src[1], 0, src[2], 0); + break; + case nir_op_fddx: + dst[0] = ir3_DSX(b, src[0], 0); + dst[0]->cat5.type = TYPE_F32; + break; + case nir_op_fddy: + dst[0] = ir3_DSY(b, src[0], 0); + dst[0]->cat5.type = TYPE_F32; + break; + break; + case nir_op_flt: + dst[0] = ir3_CMPS_F(b, src[0], 0, src[1], 0); + dst[0]->cat2.condition = IR3_COND_LT; + dst[0] = ir3_n2b(b, dst[0]); + break; + case nir_op_fge: + dst[0] = ir3_CMPS_F(b, src[0], 0, src[1], 0); + dst[0]->cat2.condition = IR3_COND_GE; + dst[0] = ir3_n2b(b, dst[0]); + break; + case nir_op_feq: + dst[0] = ir3_CMPS_F(b, src[0], 0, src[1], 0); + dst[0]->cat2.condition = IR3_COND_EQ; + dst[0] = ir3_n2b(b, dst[0]); + break; + case nir_op_fne: + dst[0] = ir3_CMPS_F(b, src[0], 0, src[1], 0); + dst[0]->cat2.condition = IR3_COND_NE; + dst[0] = ir3_n2b(b, dst[0]); + break; + case nir_op_fceil: + dst[0] = ir3_CEIL_F(b, src[0], 0); + break; + case nir_op_ffloor: + dst[0] = ir3_FLOOR_F(b, src[0], 0); + break; + case nir_op_ftrunc: + dst[0] = ir3_TRUNC_F(b, src[0], 0); + break; + case nir_op_fround_even: + dst[0] = ir3_RNDNE_F(b, src[0], 0); + break; + case nir_op_fsign: + dst[0] = ir3_SIGN_F(b, src[0], 0); + break; + + case nir_op_fsin: + dst[0] = ir3_SIN(b, src[0], 0); + break; + case nir_op_fcos: + dst[0] = ir3_COS(b, src[0], 0); + break; + case nir_op_frsq: + dst[0] = ir3_RSQ(b, src[0], 0); + break; + case nir_op_frcp: + dst[0] = ir3_RCP(b, src[0], 0); + break; + case nir_op_flog2: + dst[0] = ir3_LOG2(b, src[0], 0); + break; + case nir_op_fexp2: + dst[0] = ir3_EXP2(b, src[0], 0); + break; + case nir_op_fsqrt: + dst[0] = ir3_SQRT(b, src[0], 0); + break; + + case nir_op_iabs: + dst[0] = ir3_ABSNEG_S(b, src[0], IR3_REG_SABS); + break; + case nir_op_iadd: + dst[0] = ir3_ADD_U(b, src[0], 0, src[1], 0); + break; + case nir_op_iand: + dst[0] = ir3_AND_B(b, src[0], 0, src[1], 0); + break; + case nir_op_imax: + dst[0] = ir3_MAX_S(b, src[0], 0, src[1], 0); + break; + case nir_op_imin: + dst[0] = ir3_MIN_S(b, src[0], 0, src[1], 0); + break; + case nir_op_imul: + /* + * dst = (al * bl) + (ah * bl << 16) + (al * bh << 16) + * mull.u tmp0, a, b ; mul low, i.e. al * bl + * madsh.m16 tmp1, a, b, tmp0 ; mul-add shift high mix, i.e. ah * bl << 16 + * madsh.m16 dst, b, a, tmp1 ; i.e. al * bh << 16 + */ + dst[0] = ir3_MADSH_M16(b, src[1], 0, src[0], 0, + ir3_MADSH_M16(b, src[0], 0, src[1], 0, + ir3_MULL_U(b, src[0], 0, src[1], 0), 0), 0); + break; + case nir_op_ineg: + dst[0] = ir3_ABSNEG_S(b, src[0], IR3_REG_SNEG); + break; + case nir_op_inot: + dst[0] = ir3_NOT_B(b, src[0], 0); + break; + case nir_op_ior: + dst[0] = ir3_OR_B(b, src[0], 0, src[1], 0); + break; + case nir_op_ishl: + dst[0] = ir3_SHL_B(b, src[0], 0, src[1], 0); + break; + case nir_op_ishr: + dst[0] = ir3_ASHR_B(b, src[0], 0, src[1], 0); + break; + case nir_op_isign: { + /* maybe this would be sane to lower in nir.. */ + struct ir3_instruction *neg, *pos; + + neg = ir3_CMPS_S(b, src[0], 0, create_immed(b, 0), 0); + neg->cat2.condition = IR3_COND_LT; + + pos = ir3_CMPS_S(b, src[0], 0, create_immed(b, 0), 0); + pos->cat2.condition = IR3_COND_GT; + + dst[0] = ir3_SUB_U(b, pos, 0, neg, 0); + + break; + } + case nir_op_isub: + dst[0] = ir3_SUB_U(b, src[0], 0, src[1], 0); + break; + case nir_op_ixor: + dst[0] = ir3_XOR_B(b, src[0], 0, src[1], 0); + break; + case nir_op_ushr: + dst[0] = ir3_SHR_B(b, src[0], 0, src[1], 0); + break; + case nir_op_ilt: + dst[0] = ir3_CMPS_S(b, src[0], 0, src[1], 0); + dst[0]->cat2.condition = IR3_COND_LT; + dst[0] = ir3_n2b(b, dst[0]); + break; + case nir_op_ige: + dst[0] = ir3_CMPS_S(b, src[0], 0, src[1], 0); + dst[0]->cat2.condition = IR3_COND_GE; + dst[0] = ir3_n2b(b, dst[0]); + break; + case nir_op_ieq: + dst[0] = ir3_CMPS_S(b, src[0], 0, src[1], 0); + dst[0]->cat2.condition = IR3_COND_EQ; + dst[0] = ir3_n2b(b, dst[0]); + break; + case nir_op_ine: + dst[0] = ir3_CMPS_S(b, src[0], 0, src[1], 0); + dst[0]->cat2.condition = IR3_COND_NE; + dst[0] = ir3_n2b(b, dst[0]); + break; + case nir_op_ult: + dst[0] = ir3_CMPS_U(b, src[0], 0, src[1], 0); + dst[0]->cat2.condition = IR3_COND_LT; + dst[0] = ir3_n2b(b, dst[0]); + break; + case nir_op_uge: + dst[0] = ir3_CMPS_U(b, src[0], 0, src[1], 0); + dst[0]->cat2.condition = IR3_COND_GE; + dst[0] = ir3_n2b(b, dst[0]); + break; + + case nir_op_bcsel: + dst[0] = ir3_SEL_B32(b, src[1], 0, ir3_b2n(b, src[0]), 0, src[2], 0); + break; + + default: + compile_error(ctx, "Unhandled ALU op: %s\n", + nir_op_infos[alu->op].name); + break; + } +} + +static void +emit_intrinisic(struct ir3_compile *ctx, nir_intrinsic_instr *intr) +{ + const nir_intrinsic_info *info = &nir_intrinsic_infos[intr->intrinsic]; + struct ir3_instruction **dst, **src; + struct ir3_block *b = ctx->block; + unsigned idx = intr->const_index[0]; + + if (info->has_dest) { + dst = get_dst(ctx, &intr->dest, intr->num_components); + } + + switch (intr->intrinsic) { + case nir_intrinsic_load_uniform: + compile_assert(ctx, intr->const_index[1] == 1); + for (int i = 0; i < intr->num_components; i++) { + unsigned n = idx * 4 + i; + dst[i] = create_uniform(b, n); + } + break; + case nir_intrinsic_load_uniform_indirect: + compile_assert(ctx, intr->const_index[1] == 1); + src = get_src(ctx, &intr->src[0]); + for (int i = 0; i < intr->num_components; i++) { + unsigned n = idx * 4 + i; + dst[i] = create_uniform_indirect(b, n, + get_addr(ctx, src[0])); + } + break; + case nir_intrinsic_load_input: + compile_assert(ctx, intr->const_index[1] == 1); + for (int i = 0; i < intr->num_components; i++) { + unsigned n = idx * 4 + i; + dst[i] = b->inputs[n]; + } + break; + case nir_intrinsic_load_input_indirect: + compile_assert(ctx, intr->const_index[1] == 1); + src = get_src(ctx, &intr->src[0]); + for (int i = 0; i < intr->num_components; i++) { + unsigned n = idx * 4 + i; + dst[i] = create_indirect(b, b->inputs, b->ninputs, n, + get_addr(ctx, src[i])); + } + break; + case nir_intrinsic_store_output: + compile_assert(ctx, intr->const_index[1] == 1); + src = get_src(ctx, &intr->src[0]); + for (int i = 0; i < intr->num_components; i++) { + unsigned n = idx * 4 + i; + b->outputs[n] = src[i]; + } + break; + case nir_intrinsic_discard_if: + case nir_intrinsic_discard: { + struct ir3_instruction *cond, *kill; + + if (intr->intrinsic == nir_intrinsic_discard_if) { + /* conditional discard: */ + src = get_src(ctx, &intr->src[0]); + cond = ir3_b2n(b, src[0]); + } else { + /* unconditional discard: */ + cond = create_immed(b, 1); + } + + cond = ir3_CMPS_S(b, cond, 0, create_immed(b, 0), 0); + cond->cat2.condition = IR3_COND_NE; + + /* condition always goes in predicate register: */ + cond->regs[0]->num = regid(REG_P0, 0); + + kill = ir3_KILL(b, cond, 0); + + ctx->kill[ctx->kill_count++] = kill; + ctx->so->has_kill = true; + + break; + } + default: + compile_error(ctx, "Unhandled intrinsic type: %s\n", + nir_intrinsic_infos[intr->intrinsic].name); + break; + } +} + +static void +emit_load_const(struct ir3_compile *ctx, nir_load_const_instr *instr) +{ + struct ir3_instruction **dst = get_dst_ssa(ctx, &instr->def, + instr->def.num_components); + for (int i = 0; i < instr->def.num_components; i++) + dst[i] = create_immed(ctx->block, instr->value.u[i]); +} + +static void +emit_undef(struct ir3_compile *ctx, nir_ssa_undef_instr *undef) +{ + struct ir3_instruction **dst = get_dst_ssa(ctx, &undef->def, + undef->def.num_components); + /* backend doesn't want undefined instructions, so just plug + * in 0.0.. + */ + for (int i = 0; i < undef->def.num_components; i++) + dst[i] = create_immed(ctx->block, fui(0.0)); +} + +/* + * texture fetch/sample instructions: + */ + +static void +emit_tex(struct ir3_compile *ctx, nir_tex_instr *tex) +{ + struct ir3_block *b = ctx->block; + struct ir3_instruction **dst, *src0, *src1, *sam; + struct ir3_instruction **coord, *lod, *compare, *proj, **off, **ddx, **ddy; + struct ir3_register *reg; + bool has_bias = false, has_lod = false, has_proj = false, has_off = false; + unsigned i, coords, flags = 0; + opc_t opc; + + /* TODO: might just be one component for gathers? */ + dst = get_dst(ctx, &tex->dest, 4); + + for (unsigned i = 0; i < tex->num_srcs; i++) { + switch (tex->src[i].src_type) { + case nir_tex_src_coord: + coord = get_src(ctx, &tex->src[i].src); + break; + case nir_tex_src_bias: + lod = get_src(ctx, &tex->src[i].src)[0]; + has_bias = true; + break; + case nir_tex_src_lod: + lod = get_src(ctx, &tex->src[i].src)[0]; + has_lod = true; + break; + case nir_tex_src_comparitor: /* shadow comparator */ + compare = get_src(ctx, &tex->src[i].src)[0]; + break; + case nir_tex_src_projector: + proj = get_src(ctx, &tex->src[i].src)[0]; + has_proj = true; + break; + case nir_tex_src_offset: + off = get_src(ctx, &tex->src[i].src); + has_off = true; + break; + case nir_tex_src_ddx: + ddx = get_src(ctx, &tex->src[i].src); + break; + case nir_tex_src_ddy: + ddy = get_src(ctx, &tex->src[i].src); + break; + default: + compile_error(ctx, "Unhandled NIR tex serc type: %d\n", + tex->src[i].src_type); + return; + } + } + + /* + * lay out the first argument in the proper order: + * - actual coordinates first + * - shadow reference + * - array index + * - projection w + * - starting at offset 4, dpdx.xy, dpdy.xy + * + * bias/lod go into the second arg + */ + + src0 = ir3_instr_create2(b, -1, OPC_META_FI, 12); + ir3_reg_create(src0, 0, 0); + + coords = tex->coord_components; + if (tex->is_array) /* array idx goes after shadow ref */ + coords--; + + /* insert tex coords: */ + for (i = 0; i < coords; i++) + ir3_reg_create(src0, 0, IR3_REG_SSA)->instr = coord[i]; + + if (coords == 1) { + /* hw doesn't do 1d, so we treat it as 2d with + * height of 1, and patch up the y coord. + * TODO: y coord should be (int)0 in some cases.. + */ + ir3_reg_create(src0, 0, IR3_REG_SSA)->instr = + create_immed(b, fui(0.5)); + } + + if (tex->is_shadow) { + ir3_reg_create(src0, 0, IR3_REG_SSA)->instr = compare; + flags |= IR3_INSTR_S; + } + + if (tex->is_array) { + ir3_reg_create(src0, 0, IR3_REG_SSA)->instr = coord[coords]; + flags |= IR3_INSTR_A; + } + + if (has_proj) { + ir3_reg_create(src0, 0, IR3_REG_SSA)->instr = proj; + flags |= IR3_INSTR_P; + } + + /* pad to 4, then ddx/ddy: */ + if (tex->op == nir_texop_txd) { + while (src0->regs_count < 5) { + ir3_reg_create(src0, 0, IR3_REG_SSA)->instr = + create_immed(b, fui(0.0)); + } + for (i = 0; i < coords; i++) { + ir3_reg_create(src0, 0, IR3_REG_SSA)->instr = ddx[i]; + } + if (coords < 2) { + ir3_reg_create(src0, 0, IR3_REG_SSA)->instr = + create_immed(b, fui(0.0)); + } + for (i = 0; i < coords; i++) { + ir3_reg_create(src0, 0, IR3_REG_SSA)->instr = ddy[i]; + } + if (coords < 2) { + ir3_reg_create(src0, 0, IR3_REG_SSA)->instr = + create_immed(b, fui(0.0)); + } + } + + /* + * second argument (if applicable): + * - offsets + * - lod + * - bias + */ + if (has_off | has_lod | has_bias) { + src1 = ir3_instr_create2(b, -1, OPC_META_FI, 5); + ir3_reg_create(src1, 0, 0); + + if (has_off) { + for (i = 0; i < coords; i++) { + ir3_reg_create(src0, 0, IR3_REG_SSA)->instr = off[i]; + } + if (coords < 2) { + ir3_reg_create(src0, 0, IR3_REG_SSA)->instr = + create_immed(b, fui(0.0)); + } + flags |= IR3_INSTR_O; + } + + if (has_lod | has_bias) { + ir3_reg_create(src1, 0, IR3_REG_SSA)->instr = lod; + } + } else { + src1 = NULL; + } + + switch (tex->op) { + case nir_texop_tex: opc = OPC_SAM; break; + case nir_texop_txb: opc = OPC_SAMB; break; + case nir_texop_txl: opc = OPC_SAML; break; + case nir_texop_txd: opc = OPC_SAMGQ; break; + case nir_texop_txf: opc = OPC_ISAML; break; + case nir_texop_txf_ms: + case nir_texop_txs: + case nir_texop_lod: + case nir_texop_tg4: + case nir_texop_query_levels: + compile_error(ctx, "Unhandled NIR tex type: %d\n", tex->op); + return; + } + + sam = ir3_instr_create(b, 5, opc); + sam->flags |= flags; + ir3_reg_create(sam, 0, 0)->wrmask = 0xf; // TODO proper wrmask?? + reg = ir3_reg_create(sam, 0, IR3_REG_SSA); + reg->wrmask = (1 << (src0->regs_count - 1)) - 1; + reg->instr = src0; + if (src1) { + reg = ir3_reg_create(sam, 0, IR3_REG_SSA); + reg->instr = src1; + reg->wrmask = (1 << (src1->regs_count - 1)) - 1; + } + sam->cat5.samp = tex->sampler_index; + sam->cat5.tex = tex->sampler_index; + + switch (tex->dest_type) { + case nir_type_invalid: + case nir_type_float: + sam->cat5.type = TYPE_F32; + break; + case nir_type_int: + sam->cat5.type = TYPE_S32; + break; + case nir_type_unsigned: + case nir_type_bool: + sam->cat5.type = TYPE_U32; + } + + // TODO maybe split this out into a helper, for other cases that + // write multiple? + struct ir3_instruction *prev = NULL; + for (int i = 0; i < 4; i++) { + struct ir3_instruction *split = + ir3_instr_create(b, -1, OPC_META_FO); + ir3_reg_create(split, 0, IR3_REG_SSA); + ir3_reg_create(split, 0, IR3_REG_SSA)->instr = sam; + split->fo.off = i; + + if (prev) { + split->cp.left = prev; + split->cp.left_cnt++; + prev->cp.right = split; + prev->cp.right_cnt++; + } + prev = split; + + dst[i] = split; + } +} + + +static void +emit_instr(struct ir3_compile *ctx, nir_instr *instr) +{ + switch (instr->type) { + case nir_instr_type_alu: + emit_alu(ctx, nir_instr_as_alu(instr)); + break; + case nir_instr_type_intrinsic: + emit_intrinisic(ctx, nir_instr_as_intrinsic(instr)); + break; + case nir_instr_type_load_const: + emit_load_const(ctx, nir_instr_as_load_const(instr)); + break; + case nir_instr_type_ssa_undef: + emit_undef(ctx, nir_instr_as_ssa_undef(instr)); + break; + case nir_instr_type_tex: + emit_tex(ctx, nir_instr_as_tex(instr)); + break; + + case nir_instr_type_call: + case nir_instr_type_jump: + case nir_instr_type_phi: + case nir_instr_type_parallel_copy: + compile_error(ctx, "Unhandled NIR instruction type: %d\n", instr->type); + break; + } +} + +static void +emit_block(struct ir3_compile *ctx, nir_block *block) +{ + nir_foreach_instr(block, instr) { + emit_instr(ctx, instr); + if (ctx->error) + return; + } +} + +static void +emit_function(struct ir3_compile *ctx, nir_function_impl *impl) +{ + foreach_list_typed(nir_cf_node, node, node, &impl->body) { + switch (node->type) { + case nir_cf_node_block: + emit_block(ctx, nir_cf_node_as_block(node)); + break; + case nir_cf_node_if: + case nir_cf_node_loop: + case nir_cf_node_function: + compile_error(ctx, "TODO\n"); + break; + } + if (ctx->error) + return; + } +} + +static void +setup_input(struct ir3_compile *ctx, nir_variable *in) +{ + struct ir3_shader_variant *so = ctx->so; + unsigned array_len = MAX2(glsl_get_length(in->type), 1); + unsigned ncomp = glsl_get_components(in->type); + /* XXX: map loc slots to semantics */ + unsigned semantic_name = in->data.location; + unsigned semantic_index = in->data.index; + unsigned n = in->data.driver_location; + + DBG("; in: %u:%u, len=%ux%u, loc=%u\n", + semantic_name, semantic_index, array_len, + ncomp, n); + + so->inputs[n].semantic = + ir3_semantic_name(semantic_name, semantic_index); + so->inputs[n].compmask = (1 << ncomp) - 1; + so->inputs[n].inloc = ctx->next_inloc; + so->inputs[n].interpolate = 0; + so->inputs_count = MAX2(so->inputs_count, n + 1); + + /* the fdN_program_emit() code expects tgsi consts here, so map + * things back to tgsi for now: + */ + switch (in->data.interpolation) { + case INTERP_QUALIFIER_FLAT: + so->inputs[n].interpolate = TGSI_INTERPOLATE_CONSTANT; + break; + case INTERP_QUALIFIER_NOPERSPECTIVE: + so->inputs[n].interpolate = TGSI_INTERPOLATE_LINEAR; + break; + case INTERP_QUALIFIER_SMOOTH: + so->inputs[n].interpolate = TGSI_INTERPOLATE_PERSPECTIVE; + break; + } + + for (int i = 0; i < ncomp; i++) { + struct ir3_instruction *instr = NULL; + unsigned idx = (n * 4) + i; + + if (ctx->so->type == SHADER_FRAGMENT) { + if (semantic_name == TGSI_SEMANTIC_POSITION) { + so->inputs[n].bary = false; + so->frag_coord = true; + instr = create_frag_coord(ctx, i); + } else if (semantic_name == TGSI_SEMANTIC_FACE) { + so->inputs[n].bary = false; + so->frag_face = true; + instr = create_frag_face(ctx, i); + } else { + bool use_ldlv = false; + + /* with NIR, we need to infer TGSI_INTERPOLATE_COLOR + * from the semantic name: + */ + if (semantic_name == TGSI_SEMANTIC_COLOR) + so->inputs[n].interpolate = TGSI_INTERPOLATE_COLOR; + + if (ctx->flat_bypass) { + /* with NIR, we need to infer TGSI_INTERPOLATE_COLOR + * from the semantic name: + */ + switch (so->inputs[n].interpolate) { + case TGSI_INTERPOLATE_COLOR: + if (!ctx->so->key.rasterflat) + break; + /* fallthrough */ + case TGSI_INTERPOLATE_CONSTANT: + use_ldlv = true; + break; + } + } + + so->inputs[n].bary = true; + + instr = create_frag_input(ctx, idx, use_ldlv); + } + } else { + instr = create_input(ctx->block, NULL, idx); + } + + ctx->block->inputs[idx] = instr; + } + + if (so->inputs[n].bary || (ctx->so->type == SHADER_VERTEX)) { + ctx->next_inloc += ncomp; + so->total_in += ncomp; + } +} + +static void +setup_output(struct ir3_compile *ctx, nir_variable *out) +{ + struct ir3_shader_variant *so = ctx->so; + unsigned array_len = MAX2(glsl_get_length(out->type), 1); + unsigned ncomp = glsl_get_components(out->type); + /* XXX: map loc slots to semantics */ + unsigned semantic_name = out->data.location; + unsigned semantic_index = out->data.index; + unsigned n = out->data.driver_location; + unsigned comp = 0; + + DBG("; out: %u:%u, len=%ux%u, loc=%u\n", + semantic_name, semantic_index, array_len, + ncomp, n); + + if (ctx->so->type == SHADER_VERTEX) { + switch (semantic_name) { + case TGSI_SEMANTIC_POSITION: + so->writes_pos = true; + break; + case TGSI_SEMANTIC_PSIZE: + so->writes_psize = true; + break; + case TGSI_SEMANTIC_COLOR: + case TGSI_SEMANTIC_BCOLOR: + case TGSI_SEMANTIC_GENERIC: + case TGSI_SEMANTIC_FOG: + case TGSI_SEMANTIC_TEXCOORD: + break; + default: + compile_error(ctx, "unknown VS semantic name: %s\n", + tgsi_semantic_names[semantic_name]); + } + } else { + switch (semantic_name) { + case TGSI_SEMANTIC_POSITION: + comp = 2; /* tgsi will write to .z component */ + so->writes_pos = true; + break; + case TGSI_SEMANTIC_COLOR: + break; + default: + compile_error(ctx, "unknown FS semantic name: %s\n", + tgsi_semantic_names[semantic_name]); + } + } + + compile_assert(ctx, n < ARRAY_SIZE(so->outputs)); + + so->outputs[n].semantic = + ir3_semantic_name(semantic_name, semantic_index); + so->outputs[n].regid = regid(n, comp); + so->outputs_count = MAX2(so->outputs_count, n + 1); + + for (int i = 0; i < ncomp; i++) { + unsigned idx = (n * 4) + i; + + ctx->block->outputs[idx] = create_immed(ctx->block, fui(0.0)); + } +} + +static void +emit_instructions(struct ir3_compile *ctx) +{ + unsigned ninputs = exec_list_length(&ctx->s->inputs) * 4; + unsigned noutputs = exec_list_length(&ctx->s->outputs) * 4; + + /* we need to allocate big enough outputs array so that + * we can stuff the kill's at the end: + */ + if (ctx->so->type == SHADER_FRAGMENT) + noutputs += ARRAY_SIZE(ctx->kill); + + ctx->block = ir3_block_create(ctx->ir, 0, ninputs, noutputs); + + if (ctx->so->type == SHADER_FRAGMENT) + ctx->block->noutputs -= ARRAY_SIZE(ctx->kill); + + + /* for fragment shader, we have a single input register (usually + * r0.xy) which is used as the base for bary.f varying fetch instrs: + */ + if (ctx->so->type == SHADER_FRAGMENT) { + // TODO maybe a helper for fi since we need it a few places.. + struct ir3_instruction *instr; + instr = ir3_instr_create(ctx->block, -1, OPC_META_FI); + ir3_reg_create(instr, 0, 0); + ir3_reg_create(instr, 0, IR3_REG_SSA); /* r0.x */ + ir3_reg_create(instr, 0, IR3_REG_SSA); /* r0.y */ + ctx->frag_pos = instr; + } + + /* Setup inputs: */ + foreach_list_typed(nir_variable, var, node, &ctx->s->inputs) { + setup_input(ctx, var); + if (ctx->error) + return; + } + + /* Setup outputs: */ + foreach_list_typed(nir_variable, var, node, &ctx->s->outputs) { + setup_output(ctx, var); + if (ctx->error) + return; + } + + /* Find the main function and emit the body: */ + nir_foreach_overload(ctx->s, overload) { + compile_assert(ctx, strcmp(overload->function->name, "main") == 0); + compile_assert(ctx, overload->impl); + emit_function(ctx, overload->impl); + if (ctx->error) + return; + } +} + +/* from NIR perspective, we actually have inputs. But most of the "inputs" + * for a fragment shader are just bary.f instructions. The *actual* inputs + * from the hw perspective are the frag_pos and optionally frag_coord and + * frag_face. + */ +static void +fixup_frag_inputs(struct ir3_compile *ctx) +{ + struct ir3_shader_variant *so = ctx->so; + struct ir3_block *block = ctx->block; + struct ir3_instruction **inputs; + struct ir3_instruction *instr; + int n, regid = 0; + + block->ninputs = 0; + + n = 4; /* always have frag_pos */ + n += COND(so->frag_face, 4); + n += COND(so->frag_coord, 4); + + inputs = ir3_alloc(ctx->ir, n * (sizeof(struct ir3_instruction *))); + + if (so->frag_face) { + /* this ultimately gets assigned to hr0.x so doesn't conflict + * with frag_coord/frag_pos.. + */ + inputs[block->ninputs++] = ctx->frag_face; + ctx->frag_face->regs[0]->num = 0; + + /* remaining channels not used, but let's avoid confusing + * other parts that expect inputs to come in groups of vec4 + */ + inputs[block->ninputs++] = NULL; + inputs[block->ninputs++] = NULL; + inputs[block->ninputs++] = NULL; + } + + /* since we don't know where to set the regid for frag_coord, + * we have to use r0.x for it. But we don't want to *always* + * use r1.x for frag_pos as that could increase the register + * footprint on simple shaders: + */ + if (so->frag_coord) { + ctx->frag_coord[0]->regs[0]->num = regid++; + ctx->frag_coord[1]->regs[0]->num = regid++; + ctx->frag_coord[2]->regs[0]->num = regid++; + ctx->frag_coord[3]->regs[0]->num = regid++; + + inputs[block->ninputs++] = ctx->frag_coord[0]; + inputs[block->ninputs++] = ctx->frag_coord[1]; + inputs[block->ninputs++] = ctx->frag_coord[2]; + inputs[block->ninputs++] = ctx->frag_coord[3]; + } + + /* we always have frag_pos: */ + so->pos_regid = regid; + + /* r0.x */ + instr = create_input(block, NULL, block->ninputs); + instr->regs[0]->num = regid++; + inputs[block->ninputs++] = instr; + ctx->frag_pos->regs[1]->instr = instr; + + /* r0.y */ + instr = create_input(block, NULL, block->ninputs); + instr->regs[0]->num = regid++; + inputs[block->ninputs++] = instr; + ctx->frag_pos->regs[2]->instr = instr; + + block->inputs = inputs; +} + +static void +compile_dump(struct ir3_compile *ctx) +{ + const char *name = (ctx->so->type == SHADER_VERTEX) ? "vert" : "frag"; + static unsigned n = 0; + char fname[16]; + FILE *f; + snprintf(fname, sizeof(fname), "%s-%04u.dot", name, n++); + f = fopen(fname, "w"); + if (!f) + return; + ir3_block_depth(ctx->block); + ir3_dump(ctx->ir, name, ctx->block, f); + fclose(f); +} + +int +ir3_compile_shader_nir(struct ir3_shader_variant *so, + const struct tgsi_token *tokens, struct ir3_shader_key key) +{ + struct ir3_compile *ctx; + struct ir3_block *block; + struct ir3_instruction **inputs; + unsigned i, j, actual_in; + int ret = 0, max_bary; + + assert(!so->ir); + + so->ir = ir3_create(); + + assert(so->ir); + + ctx = compile_init(so, tokens); + if (!ctx) { + DBG("INIT failed!"); + ret = -1; + goto out; + } + + emit_instructions(ctx); + + if (ctx->error) { + DBG("EMIT failed!"); + ret = -1; + goto out; + } + + block = ctx->block; + so->ir->block = block; + + /* keep track of the inputs from TGSI perspective.. */ + inputs = block->inputs; + + /* but fixup actual inputs for frag shader: */ + if (so->type == SHADER_FRAGMENT) + fixup_frag_inputs(ctx); + + /* at this point, for binning pass, throw away unneeded outputs: */ + if (key.binning_pass) { + for (i = 0, j = 0; i < so->outputs_count; i++) { + unsigned name = sem2name(so->outputs[i].semantic); + unsigned idx = sem2idx(so->outputs[i].semantic); + + /* throw away everything but first position/psize */ + if ((idx == 0) && ((name == TGSI_SEMANTIC_POSITION) || + (name == TGSI_SEMANTIC_PSIZE))) { + if (i != j) { + so->outputs[j] = so->outputs[i]; + block->outputs[(j*4)+0] = block->outputs[(i*4)+0]; + block->outputs[(j*4)+1] = block->outputs[(i*4)+1]; + block->outputs[(j*4)+2] = block->outputs[(i*4)+2]; + block->outputs[(j*4)+3] = block->outputs[(i*4)+3]; + } + j++; + } + } + so->outputs_count = j; + block->noutputs = j * 4; + } + + /* if we want half-precision outputs, mark the output registers + * as half: + */ + if (key.half_precision) { + for (i = 0; i < block->noutputs; i++) { + if (!block->outputs[i]) + continue; + block->outputs[i]->regs[0]->flags |= IR3_REG_HALF; + } + } + + /* at this point, we want the kill's in the outputs array too, + * so that they get scheduled (since they have no dst).. we've + * already ensured that the array is big enough in push_block(): + */ + if (so->type == SHADER_FRAGMENT) { + for (i = 0; i < ctx->kill_count; i++) + block->outputs[block->noutputs++] = ctx->kill[i]; + } + + if (fd_mesa_debug & FD_DBG_OPTDUMP) + compile_dump(ctx); + + if (fd_mesa_debug & FD_DBG_OPTMSGS) { + printf("BEFORE CP:\n"); + ir3_dump_instr_list(block->head); + } + + ir3_block_depth(block); + + ir3_block_cp(block); + + if (fd_mesa_debug & FD_DBG_OPTMSGS) { + printf("BEFORE GROUPING:\n"); + ir3_dump_instr_list(block->head); + } + + /* Group left/right neighbors, inserting mov's where needed to + * solve conflicts: + */ + ir3_block_group(block); + + if (fd_mesa_debug & FD_DBG_OPTDUMP) + compile_dump(ctx); + + ir3_block_depth(block); + + if (fd_mesa_debug & FD_DBG_OPTMSGS) { + printf("AFTER DEPTH:\n"); + ir3_dump_instr_list(block->head); + } + + ret = ir3_block_sched(block); + if (ret) { + DBG("SCHED failed!"); + goto out; + } + + if (fd_mesa_debug & FD_DBG_OPTMSGS) { + printf("AFTER SCHED:\n"); + ir3_dump_instr_list(block->head); + } + + ret = ir3_block_ra(block, so->type, so->frag_coord, so->frag_face); + if (ret) { + DBG("RA failed!"); + goto out; + } + + if (fd_mesa_debug & FD_DBG_OPTMSGS) { + printf("AFTER RA:\n"); + ir3_dump_instr_list(block->head); + } + + ir3_block_legalize(block, &so->has_samp, &max_bary); + + /* fixup input/outputs: */ + for (i = 0; i < so->outputs_count; i++) { + so->outputs[i].regid = block->outputs[i*4]->regs[0]->num; + /* preserve hack for depth output.. tgsi writes depth to .z, + * but what we give the hw is the scalar register: + */ + if ((so->type == SHADER_FRAGMENT) && + (sem2name(so->outputs[i].semantic) == TGSI_SEMANTIC_POSITION)) + so->outputs[i].regid += 2; + } + + /* Note that some or all channels of an input may be unused: */ + actual_in = 0; + for (i = 0; i < so->inputs_count; i++) { + unsigned j, regid = ~0, compmask = 0; + so->inputs[i].ncomp = 0; + for (j = 0; j < 4; j++) { + struct ir3_instruction *in = inputs[(i*4) + j]; + if (in) { + compmask |= (1 << j); + regid = in->regs[0]->num - j; + actual_in++; + so->inputs[i].ncomp++; + } + } + so->inputs[i].regid = regid; + so->inputs[i].compmask = compmask; + } + + /* fragment shader always gets full vec4's even if it doesn't + * fetch all components, but vertex shader we need to update + * with the actual number of components fetch, otherwise thing + * will hang due to mismaptch between VFD_DECODE's and + * TOTALATTRTOVS + */ + if (so->type == SHADER_VERTEX) + so->total_in = actual_in; + else + so->total_in = align(max_bary + 1, 4); + +out: + if (ret) { + ir3_destroy(so->ir); + so->ir = NULL; + } + compile_free(ctx); + + return ret; +} diff --git a/src/gallium/drivers/freedreno/ir3/ir3_shader.c b/src/gallium/drivers/freedreno/ir3/ir3_shader.c index 0cf357e17d8..9bf4e64c7f1 100644 --- a/src/gallium/drivers/freedreno/ir3/ir3_shader.c +++ b/src/gallium/drivers/freedreno/ir3/ir3_shader.c @@ -177,10 +177,20 @@ create_variant(struct ir3_shader *shader, struct ir3_shader_key key) tgsi_dump(tokens, 0); } - ret = ir3_compile_shader(v, tokens, key, true); + if (fd_mesa_debug & FD_DBG_NIR) { + ret = ir3_compile_shader_nir(v, tokens, key); + if (ret) + reset_variant(v, "NIR compiler failed, fallback to TGSI!"); + } else { + ret = -1; + } + if (ret) { - reset_variant(v, "new compiler failed, trying without copy propagation!"); - ret = ir3_compile_shader(v, tokens, key, false); + ret = ir3_compile_shader(v, tokens, key, true); + if (ret) { + reset_variant(v, "new compiler failed, trying without copy propagation!"); + ret = ir3_compile_shader(v, tokens, key, false); + } } if (ret) { |