Home | History | Annotate | Line # | Download | only in sfn 
      1 /* -*- mesa-c++  -*-
      2  *
      3  * Copyright (c) 2019 Collabora LTD
      4  *
      5  * Author: Gert Wollny <gert.wollny (at) collabora.com>
      6  *
      7  * Permission is hereby granted, free of charge, to any person obtaining a
      8  * copy of this software and associated documentation files (the "Software"),
      9  * to deal in the Software without restriction, including without limitation
     10  * on the rights to use, copy, modify, merge, publish, distribute, sub
     11  * license, and/or sell copies of the Software, and to permit persons to whom
     12  * the Software is furnished to do so, subject to the following conditions:
     13  *
     14  * The above copyright notice and this permission notice (including the next
     15  * paragraph) shall be included in all copies or substantial portions of the
     16  * Software.
     17  *
     18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     20  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
     21  * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
     22  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
     23  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
     24  * USE OR OTHER DEALINGS IN THE SOFTWARE.
     25  */
     26 
     27 #ifndef SFN_NIR_H
     28 #define SFN_NIR_H
     29 
     30 #include "nir.h"
     31 #include "nir_builder.h"
     32 
     33 #ifdef __cplusplus
     34 #include "sfn_shader_base.h"
     35 #include <vector>
     36 
     37 namespace r600 {
     38 
     39 class NirLowerInstruction {
     40 public:
     41 	NirLowerInstruction();
     42 
     43 	bool run(nir_shader *shader);
     44 
     45 private:
     46 	static bool filter_instr(const nir_instr *instr, const void *data);
     47         static nir_ssa_def *lower_instr(nir_builder *b, nir_instr *instr,  void *data);
     48 
     49         void set_builder(nir_builder *_b) { b = _b;}
     50 
     51 	virtual bool filter(const nir_instr *instr) const = 0;
     52 	virtual nir_ssa_def *lower(nir_instr *instr) = 0;
     53 protected:
     54 	nir_builder *b;
     55 };
     56 
     57 bool r600_lower_scratch_addresses(nir_shader *shader);
     58 
     59 bool r600_lower_ubo_to_align16(nir_shader *shader);
     60 
     61 bool r600_nir_split_64bit_io(nir_shader *sh);
     62 
     63 bool r600_nir_64_to_vec2(nir_shader *sh);
     64 
     65 bool r600_merge_vec2_stores(nir_shader *shader);
     66 
     67 class Shader {
     68 public:
     69    std::vector<InstructionBlock>& m_ir;
     70    ValueMap m_temp;
     71 };
     72 
     73 class ShaderFromNir {
     74 public:
     75    ShaderFromNir();
     76    ~ShaderFromNir();
     77 
     78    unsigned ninputs() const;
     79 
     80    bool lower(const nir_shader *shader, r600_pipe_shader *sh,
     81               r600_pipe_shader_selector *sel, r600_shader_key &key,
     82               r600_shader *gs_shader, enum chip_class chip_class);
     83 
     84    bool process_declaration();
     85 
     86    pipe_shader_type processor_type() const;
     87 
     88    bool emit_instruction(nir_instr *instr);
     89 
     90    const std::vector<InstructionBlock> &shader_ir() const;
     91 
     92    Shader shader() const;
     93 private:
     94 
     95    bool process_block();
     96    bool process_cf_node(nir_cf_node *node);
     97    bool process_if(nir_if *node);
     98    bool process_loop(nir_loop *node);
     99    bool process_block(nir_block *node);
    100 
    101    std::unique_ptr<ShaderFromNirProcessor> impl;
    102    const nir_shader *sh;
    103 
    104    enum chip_class chip_class;
    105    int m_current_if_id;
    106    int m_current_loop_id;
    107    std::stack<int> m_if_stack;
    108    int scratch_size;
    109 };
    110 
    111 class AssemblyFromShader {
    112 public:
    113    virtual ~AssemblyFromShader();
    114    bool lower(const std::vector<InstructionBlock> &ir);
    115 private:
    116    virtual bool do_lower(const std::vector<InstructionBlock>& ir)  = 0 ;
    117 };
    118 
    119 }
    120 
    121 static inline nir_ssa_def *
    122 r600_imm_ivec3(nir_builder *build, int x, int y, int z)
    123 {
    124    nir_const_value v[3] = {
    125       nir_const_value_for_int(x, 32),
    126       nir_const_value_for_int(y, 32),
    127       nir_const_value_for_int(z, 32),
    128    };
    129 
    130    return nir_build_imm(build, 3, 32, v);
    131 }
    132 
    133 bool r600_lower_tess_io(nir_shader *shader, enum pipe_prim_type prim_type);
    134 bool r600_append_tcs_TF_emission(nir_shader *shader, enum pipe_prim_type prim_type);
    135 bool r600_lower_tess_coord(nir_shader *sh, enum pipe_prim_type prim_type);
    136 
    137 bool
    138 r600_legalize_image_load_store(nir_shader *shader);
    139 
    140 
    141 #else
    142 #include "gallium/drivers/r600/r600_shader.h"
    143 #endif
    144 
    145 #ifdef __cplusplus
    146 extern "C" {
    147 #endif
    148 
    149 bool r600_vectorize_vs_inputs(nir_shader *shader);
    150 
    151 bool r600_lower_to_scalar_instr_filter(const nir_instr *instr, const void *);
    152 
    153 int r600_shader_from_nir(struct r600_context *rctx,
    154                          struct r600_pipe_shader *pipeshader,
    155                          union r600_shader_key *key);
    156 
    157 #ifdef __cplusplus
    158 }
    159 #endif
    160 
    161 
    162 #endif // SFN_NIR_H
    163