1 /* -*- mesa-c++ -*- 2 * 3 * Copyright (c) 2019 Collabora LTD 4 * 5 * Author: Gert Wollny <gert.wollny@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_fragment_shader_from_nir_h 28 #define sfn_fragment_shader_from_nir_h 29 30 #include "sfn_shader_base.h" 31 #include "sfn_shaderio.h" 32 #include <bitset> 33 34 namespace r600 { 35 36 class FragmentShaderFromNir : public ShaderFromNirProcessor { 37 public: 38 FragmentShaderFromNir(const nir_shader& nir, r600_shader& sh_info, 39 r600_pipe_shader_selector &sel, const r600_shader_key &key, 40 enum chip_class chip_class); 41 bool scan_sysvalue_access(nir_instr *instr) override; 42 private: 43 44 struct Interpolator { 45 bool enabled; 46 unsigned ij_index; 47 PValue i; 48 PValue j; 49 }; 50 51 void emit_shader_start() override; 52 bool do_allocate_reserved_registers() override; 53 bool process_store_output(nir_intrinsic_instr *instr); 54 55 bool emit_store_output(nir_intrinsic_instr* instr); 56 57 bool emit_export_pixel(const nir_variable *, nir_intrinsic_instr* instr, int outputs); 58 bool emit_export_pixel(nir_intrinsic_instr* instr, int outputs); 59 bool load_interpolated(GPRVector &dest, ShaderInput &io, const Interpolator& ip, 60 int num_components, int start_comp); 61 bool load_interpolated_one_comp(GPRVector &dest, ShaderInput& io, const Interpolator& ip, EAluOp op); 62 bool load_interpolated_two_comp(GPRVector &dest, ShaderInput& io, const Interpolator& ip,EAluOp op, int writemask); 63 bool load_interpolated_two_comp_for_one(GPRVector &dest, 64 ShaderInput& io, const Interpolator& ip, EAluOp op, int start, int comp); 65 66 bool emit_intrinsic_instruction_override(nir_intrinsic_instr* instr) override; 67 void do_finalize() override; 68 69 void load_front_face(); 70 71 bool emit_load_input(nir_intrinsic_instr* instr); 72 bool emit_load_front_face(nir_intrinsic_instr* instr); 73 bool emit_load_sample_mask_in(nir_intrinsic_instr* instr); 74 bool emit_load_sample_pos(nir_intrinsic_instr* instr); 75 bool emit_load_sample_id(nir_intrinsic_instr* instr); 76 77 bool process_load_input(nir_intrinsic_instr *instr, bool interpolated); 78 bool emit_load_interpolated_input(nir_intrinsic_instr* instr); 79 bool load_barycentric_at_offset(nir_intrinsic_instr* instr); 80 bool load_barycentric_at_sample(nir_intrinsic_instr* instr); 81 82 83 unsigned m_max_color_exports; 84 unsigned m_max_counted_color_exports; 85 bool m_two_sided_color; 86 ExportInstruction *m_last_pixel_export; 87 const nir_shader& m_nir; 88 89 90 std::array<Interpolator, 6> m_interpolator; 91 unsigned m_reserved_registers; 92 unsigned m_frag_pos_index; 93 PGPRValue m_front_face_reg; 94 PGPRValue m_sample_mask_reg; 95 PGPRValue m_sample_id_reg; 96 PGPRValue m_helper_invocation; 97 GPRVector m_frag_pos; 98 bool m_need_back_color; 99 bool m_front_face_loaded; 100 ShaderIO m_shaderio; 101 unsigned m_depth_exports; 102 103 std::map<unsigned, PValue> m_input_cache; 104 105 static const int s_max_interpolators = 6; 106 107 std::bitset<s_max_interpolators> m_interpolators_used; 108 109 unsigned m_apply_sample_mask; 110 bool m_dual_source_blend; 111 ShaderInput *m_pos_input; 112 113 }; 114 115 } 116 117 #endif 118