1 /* 2 * Copyright © 2013 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 21 * DEALINGS IN THE SOFTWARE. 22 */ 23 24 /** 25 * \file brw_vec4_gs_visitor.h 26 * 27 * Geometry-shader-specific code derived from the vec4_visitor class. 28 */ 29 30 #ifndef BRW_VEC4_GS_VISITOR_H 31 #define BRW_VEC4_GS_VISITOR_H 32 33 #include "brw_vec4.h" 34 35 #define MAX_GS_INPUT_VERTICES 6 36 37 #ifdef __cplusplus 38 namespace brw { 39 40 class vec4_gs_visitor : public vec4_visitor 41 { 42 public: 43 vec4_gs_visitor(const struct brw_compiler *compiler, 44 void *log_data, 45 struct brw_gs_compile *c, 46 struct brw_gs_prog_data *prog_data, 47 const nir_shader *shader, 48 void *mem_ctx, 49 bool no_spills, 50 int shader_time_index); 51 52 virtual void nir_setup_inputs(); 53 54 protected: 55 virtual void setup_payload(); 56 virtual void emit_prolog(); 57 virtual void emit_thread_end(); 58 virtual void emit_urb_write_header(int mrf); 59 virtual vec4_instruction *emit_urb_write_opcode(bool complete); 60 virtual void gs_emit_vertex(int stream_id); 61 virtual void gs_end_primitive(); 62 virtual void nir_emit_intrinsic(nir_intrinsic_instr *instr); 63 64 protected: 65 int setup_varying_inputs(int payload_reg, int attributes_per_reg); 66 void emit_control_data_bits(); 67 void set_stream_control_data_bits(unsigned stream_id); 68 69 src_reg vertex_count; 70 src_reg control_data_bits; 71 const struct brw_gs_compile * const c; 72 struct brw_gs_prog_data * const gs_prog_data; 73 }; 74 75 } /* namespace brw */ 76 #endif /* __cplusplus */ 77 78 #endif /* BRW_VEC4_GS_VISITOR_H */ 79