1 /* 2 * Copyright © 2014 Intel Corporation 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice (including the next 12 * paragraph) shall be included in all copies or substantial portions of the 13 * Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS 21 * IN THE SOFTWARE. 22 * 23 */ 24 25 #ifndef ELK_GFX6_GS_VISITOR_H 26 #define ELK_GFX6_GS_VISITOR_H 27 28 #include "elk_vec4.h" 29 #include "elk_vec4_gs_visitor.h" 30 31 #ifdef __cplusplus 32 33 namespace elk { 34 35 class gfx6_gs_visitor : public vec4_gs_visitor 36 { 37 public: gfx6_gs_visitor(const struct elk_compiler * comp,const struct elk_compile_params * params,struct elk_gs_compile * c,struct elk_gs_prog_data * prog_data,const nir_shader * shader,bool no_spills,bool debug_enabled)38 gfx6_gs_visitor(const struct elk_compiler *comp, 39 const struct elk_compile_params *params, 40 struct elk_gs_compile *c, 41 struct elk_gs_prog_data *prog_data, 42 const nir_shader *shader, 43 bool no_spills, 44 bool debug_enabled) : 45 vec4_gs_visitor(comp, params, c, prog_data, shader, no_spills, debug_enabled) 46 { 47 } 48 49 protected: 50 virtual void emit_prolog(); 51 virtual void emit_thread_end(); 52 virtual void gs_emit_vertex(int stream_id); 53 virtual void gs_end_primitive(); 54 virtual void emit_urb_write_header(int mrf); 55 virtual void setup_payload(); 56 57 private: 58 void xfb_write(); 59 void xfb_program(unsigned vertex, unsigned num_verts); 60 int get_vertex_output_offset_for_varying(int vertex, int varying); 61 void emit_snb_gs_urb_write_opcode(bool complete, 62 int base_mrf, 63 int last_mrf, 64 int urb_offset); 65 66 src_reg vertex_output; 67 src_reg vertex_output_offset; 68 src_reg temp; 69 src_reg first_vertex; 70 src_reg prim_count; 71 src_reg primitive_id; 72 73 /* Transform Feedback members */ 74 src_reg sol_prim_written; 75 src_reg svbi; 76 src_reg max_svbi; 77 src_reg destination_indices; 78 }; 79 80 } /* namespace elk */ 81 82 #endif /* __cplusplus */ 83 84 #endif /* ELK_GFX6_GS_VISITOR_H */ 85