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25 * \file brw_vec4_tcs.h
27 * The vec4-mode tessellation control shader compiler backend.
30 #ifndef BRW_VEC4_TCS_H
31 #define BRW_VEC4_TCS_H
33 #include "brw_compiler.h"
39 class vec4_tcs_visitor
: public vec4_visitor
42 vec4_tcs_visitor(const struct brw_compiler
*compiler
,
44 const struct brw_tcs_prog_key
*key
,
45 struct brw_tcs_prog_data
*prog_data
,
46 const nir_shader
*nir
,
48 int shader_time_index
,
49 const struct brw_vue_map
*input_vue_map
);
52 virtual void setup_payload();
53 virtual void emit_prolog();
54 virtual void emit_thread_end();
56 virtual void nir_emit_intrinsic(nir_intrinsic_instr
*instr
);
58 void emit_input_urb_read(const dst_reg
&dst
,
59 const src_reg
&vertex_index
,
61 unsigned first_component
,
62 const src_reg
&indirect_offset
);
63 void emit_output_urb_read(const dst_reg
&dst
,
65 unsigned first_component
,
66 const src_reg
&indirect_offset
);
68 void emit_urb_write(const src_reg
&value
, unsigned writemask
,
69 unsigned base_offset
, const src_reg
&indirect_offset
);
71 /* we do not use the normal end-of-shader URB write mechanism -- but every vec4 stage
72 * must provide implementations of these:
74 virtual void emit_urb_write_header(int mrf
) {}
75 virtual vec4_instruction
*emit_urb_write_opcode(bool complete
) { return NULL
; }
77 const struct brw_vue_map
*input_vue_map
;
79 const struct brw_tcs_prog_key
*key
;
80 src_reg invocation_id
;
84 #endif /* __cplusplus */
86 #endif /* BRW_VEC4_TCS_H */