| /* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */ |
| |
| /* |
| * Copyright (C) 2015 Rob Clark <robclark@freedesktop.org> |
| * |
| * 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 <robclark@freedesktop.org> |
| */ |
| |
| |
| #include "freedreno_util.h" |
| |
| #include "ir3_nir.h" |
| #include "ir3_compiler.h" |
| #include "ir3_shader.h" |
| |
| #include "nir/tgsi_to_nir.h" |
| |
| static const nir_shader_compiler_options options = { |
| .lower_fpow = true, |
| .lower_fsat = true, |
| .lower_scmp = true, |
| .lower_flrp32 = true, |
| .lower_flrp64 = true, |
| .lower_ffract = true, |
| .lower_fmod32 = true, |
| .lower_fmod64 = true, |
| .lower_fdiv = true, |
| .fuse_ffma = true, |
| .native_integers = true, |
| .vertex_id_zero_based = true, |
| .lower_extract_byte = true, |
| .lower_extract_word = true, |
| }; |
| |
| struct nir_shader * |
| ir3_tgsi_to_nir(const struct tgsi_token *tokens) |
| { |
| return tgsi_to_nir(tokens, &options); |
| } |
| |
| const nir_shader_compiler_options * |
| ir3_get_compiler_options(struct ir3_compiler *compiler) |
| { |
| return &options; |
| } |
| |
| /* for given shader key, are any steps handled in nir? */ |
| bool |
| ir3_key_lowers_nir(const struct ir3_shader_key *key) |
| { |
| return key->fsaturate_s | key->fsaturate_t | key->fsaturate_r | |
| key->vsaturate_s | key->vsaturate_t | key->vsaturate_r | |
| key->ucp_enables | key->color_two_side | |
| key->fclamp_color | key->vclamp_color; |
| } |
| |
| #define OPT(nir, pass, ...) ({ \ |
| bool this_progress = false; \ |
| NIR_PASS(this_progress, nir, pass, ##__VA_ARGS__); \ |
| this_progress; \ |
| }) |
| |
| #define OPT_V(nir, pass, ...) NIR_PASS_V(nir, pass, ##__VA_ARGS__) |
| |
| static void |
| ir3_optimize_loop(nir_shader *s) |
| { |
| bool progress; |
| do { |
| progress = false; |
| |
| OPT_V(s, nir_lower_vars_to_ssa); |
| progress |= OPT(s, nir_opt_copy_prop_vars); |
| progress |= OPT(s, nir_lower_alu_to_scalar); |
| progress |= OPT(s, nir_lower_phis_to_scalar); |
| |
| progress |= OPT(s, nir_copy_prop); |
| progress |= OPT(s, nir_opt_dce); |
| progress |= OPT(s, nir_opt_cse); |
| progress |= OPT(s, ir3_nir_lower_if_else); |
| progress |= OPT(s, nir_opt_algebraic); |
| progress |= OPT(s, nir_opt_constant_folding); |
| |
| } while (progress); |
| } |
| |
| struct nir_shader * |
| ir3_optimize_nir(struct ir3_shader *shader, nir_shader *s, |
| const struct ir3_shader_key *key) |
| { |
| struct nir_lower_tex_options tex_options = { |
| .lower_rect = 0, |
| }; |
| |
| if (key) { |
| switch (shader->type) { |
| case SHADER_FRAGMENT: |
| tex_options.saturate_s = key->fsaturate_s; |
| tex_options.saturate_t = key->fsaturate_t; |
| tex_options.saturate_r = key->fsaturate_r; |
| break; |
| case SHADER_VERTEX: |
| tex_options.saturate_s = key->vsaturate_s; |
| tex_options.saturate_t = key->vsaturate_t; |
| tex_options.saturate_r = key->vsaturate_r; |
| break; |
| default: |
| /* TODO */ |
| break; |
| } |
| } |
| |
| if (shader->compiler->gpu_id >= 400) { |
| /* a4xx seems to have *no* sam.p */ |
| tex_options.lower_txp = ~0; /* lower all txp */ |
| } else { |
| /* a3xx just needs to avoid sam.p for 3d tex */ |
| tex_options.lower_txp = (1 << GLSL_SAMPLER_DIM_3D); |
| } |
| |
| if (fd_mesa_debug & FD_DBG_DISASM) { |
| debug_printf("----------------------\n"); |
| nir_print_shader(s, stdout); |
| debug_printf("----------------------\n"); |
| } |
| |
| OPT_V(s, nir_opt_global_to_local); |
| OPT_V(s, nir_lower_regs_to_ssa); |
| |
| if (key) { |
| if (s->info.stage == MESA_SHADER_VERTEX) { |
| OPT_V(s, nir_lower_clip_vs, key->ucp_enables); |
| if (key->vclamp_color) |
| OPT_V(s, nir_lower_clamp_color_outputs); |
| } else if (s->info.stage == MESA_SHADER_FRAGMENT) { |
| OPT_V(s, nir_lower_clip_fs, key->ucp_enables); |
| if (key->fclamp_color) |
| OPT_V(s, nir_lower_clamp_color_outputs); |
| } |
| if (key->color_two_side) { |
| OPT_V(s, nir_lower_two_sided_color); |
| } |
| } else { |
| /* only want to do this the first time (when key is null) |
| * and not again on any potential 2nd variant lowering pass: |
| */ |
| OPT_V(s, ir3_nir_apply_trig_workarounds); |
| } |
| |
| OPT_V(s, nir_lower_tex, &tex_options); |
| OPT_V(s, nir_lower_load_const_to_scalar); |
| if (shader->compiler->gpu_id < 500) |
| OPT_V(s, ir3_nir_lower_tg4_to_tex); |
| |
| ir3_optimize_loop(s); |
| |
| /* do idiv lowering after first opt loop to give a chance for |
| * divide by immed power-of-two to be caught first: |
| */ |
| if (OPT(s, nir_lower_idiv)) |
| ir3_optimize_loop(s); |
| |
| OPT_V(s, nir_remove_dead_variables, nir_var_local); |
| |
| if (fd_mesa_debug & FD_DBG_DISASM) { |
| debug_printf("----------------------\n"); |
| nir_print_shader(s, stdout); |
| debug_printf("----------------------\n"); |
| } |
| |
| nir_sweep(s); |
| |
| return s; |
| } |
| |
| void |
| ir3_nir_scan_driver_consts(nir_shader *shader, |
| struct ir3_driver_const_layout *layout) |
| { |
| nir_foreach_function(function, shader) { |
| if (!function->impl) |
| continue; |
| |
| nir_foreach_block(block, function->impl) { |
| nir_foreach_instr(instr, block) { |
| if (instr->type != nir_instr_type_intrinsic) |
| continue; |
| |
| nir_intrinsic_instr *intr = |
| nir_instr_as_intrinsic(instr); |
| unsigned idx; |
| |
| switch (intr->intrinsic) { |
| case nir_intrinsic_get_buffer_size: |
| idx = nir_src_as_const_value(intr->src[0])->u32[0]; |
| if (layout->ssbo_size.mask & (1 << idx)) |
| break; |
| layout->ssbo_size.mask |= (1 << idx); |
| layout->ssbo_size.off[idx] = |
| layout->ssbo_size.count; |
| layout->ssbo_size.count += 1; /* one const per */ |
| break; |
| case nir_intrinsic_image_store: |
| idx = intr->variables[0]->var->data.driver_location; |
| if (layout->image_dims.mask & (1 << idx)) |
| break; |
| layout->image_dims.mask |= (1 << idx); |
| layout->ssbo_size.off[idx] = |
| layout->image_dims.count; |
| layout->image_dims.count += 3; /* three const per */ |
| break; |
| default: |
| break; |
| } |
| } |
| } |
| } |
| } |