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25 * \file brw_vec4_gs_visitor.h
27 * Geometry-shader-specific code derived from the vec4_visitor class.
30 #ifndef BRW_VEC4_GS_VISITOR_H
31 #define BRW_VEC4_GS_VISITOR_H
35 #define MAX_GS_INPUT_VERTICES 6
40 class vec4_gs_visitor
: public vec4_visitor
43 vec4_gs_visitor(const struct brw_compiler
*compiler
,
45 struct brw_gs_compile
*c
,
46 struct brw_gs_prog_data
*prog_data
,
47 const nir_shader
*shader
,
50 int shader_time_index
);
52 virtual void nir_setup_inputs();
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
);
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
);
70 src_reg control_data_bits
;
71 const struct brw_gs_compile
* const c
;
72 struct brw_gs_prog_data
* const gs_prog_data
;
76 #endif /* __cplusplus */
78 #endif /* BRW_VEC4_GS_VISITOR_H */