src/gallium/drivers/r600/sfn/sfn_shader_vertex.h

   1 /* -*- mesa-c++  -*-
   2  *
   3  * Copyright (c) 2018 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_vertex_shader_from_nir_h
  28 #define sfn_vertex_shader_from_nir_h
  29
  30 #include "sfn_shader_base.h"
  31
  32 namespace r600 {
  33
  34 class VertexShaderFromNir : public ShaderFromNirProcessor {
  35 public:
  36    VertexShaderFromNir(r600_pipe_shader *sh,
  37                        r600_pipe_shader_selector &sel,
  38                        const r600_shader_key &key);
  39
  40    bool do_emit_load_deref(const nir_variable *in_var, nir_intrinsic_instr* instr) override;
  41    bool scan_sysvalue_access(nir_instr *instr) override;
  42 protected:
  43    bool emit_varying_pos(const nir_variable *out_var, nir_intrinsic_instr* instr,
  44                          std::array<uint32_t, 4> *swizzle_override = nullptr);
  45    bool emit_varying_param(const nir_variable *out_var, nir_intrinsic_instr* instr);
  46    bool emit_clip_vertices(const nir_variable *out_var, nir_intrinsic_instr* instr);
  47    bool emit_stream(int stream);
  48
  49    // todo: encapsulate
  50    unsigned m_num_clip_dist;
  51    ExportInstruction *m_last_param_export;
  52    ExportInstruction *m_last_pos_export;
  53    r600_pipe_shader *m_pipe_shader;
  54    unsigned m_enabled_stream_buffers_mask;
  55    const pipe_stream_output_info *m_so_info;
  56    void do_finalize() override;
  57 private:
  58
  59    bool do_process_inputs(nir_variable *input) override;
  60    bool allocate_reserved_registers() override;
  61    bool do_process_outputs(nir_variable *output) override;
  62    bool emit_intrinsic_instruction_override(nir_intrinsic_instr* instr) override;
  63
  64    virtual void finalize_exports() = 0;
  65
  66    unsigned m_cur_param;
  67    std::map<unsigned, unsigned> m_param_map;
  68    unsigned m_cur_clip_pos;
  69
  70    PValue m_vertex_id;
  71    PValue m_instance_id;
  72    r600_shader_key m_key;
  73 };
  74
  75 class VertexShaderFromNirForFS :  public VertexShaderFromNir {
  76 public:
  77    using VertexShaderFromNir::VertexShaderFromNir;
  78
  79    bool do_emit_store_deref(const nir_variable *out_var, nir_intrinsic_instr* instr) override;
  80 private:
  81    void finalize_exports() override;
  82 };
  83
  84 }
  85
  86 #endif