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24 #include "brw_vec4_gs_visitor.h"
29 vec4_gs_visitor::nir_setup_inputs()
34 vec4_gs_visitor::nir_setup_system_value_intrinsic(nir_intrinsic_instr
*instr
)
38 switch (instr
->intrinsic
) {
39 case nir_intrinsic_load_primitive_id
:
40 /* We'll just read g1 directly; don't create a temporary. */
43 case nir_intrinsic_load_invocation_id
:
44 reg
= &this->nir_system_values
[SYSTEM_VALUE_INVOCATION_ID
];
45 if (reg
->file
== BAD_FILE
)
46 *reg
= *this->make_reg_for_system_value(SYSTEM_VALUE_INVOCATION_ID
);
50 vec4_visitor::nir_setup_system_value_intrinsic(instr
);
56 vec4_gs_visitor::nir_emit_intrinsic(nir_intrinsic_instr
*instr
)
61 switch (instr
->intrinsic
) {
62 case nir_intrinsic_load_per_vertex_input
: {
63 /* The EmitNoIndirectInput flag guarantees our vertex index will
64 * be constant. We should handle indirects someday.
66 nir_const_value
*vertex
= nir_src_as_const_value(instr
->src
[0]);
67 nir_const_value
*offset
= nir_src_as_const_value(instr
->src
[1]);
69 /* Make up a type...we have no way of knowing... */
70 const glsl_type
*const type
= glsl_type::ivec(instr
->num_components
);
72 src
= src_reg(ATTR
, BRW_VARYING_SLOT_COUNT
* vertex
->u32
[0] +
73 instr
->const_index
[0] + offset
->u32
[0],
75 /* gl_PointSize is passed in the .w component of the VUE header */
76 if (instr
->const_index
[0] == VARYING_SLOT_PSIZ
)
77 src
.swizzle
= BRW_SWIZZLE_WWWW
;
79 dest
= get_nir_dest(instr
->dest
, src
.type
);
80 dest
.writemask
= brw_writemask_for_size(instr
->num_components
);
85 case nir_intrinsic_load_input
:
86 unreachable("nir_lower_io should have produced per_vertex intrinsics");
88 case nir_intrinsic_emit_vertex_with_counter
: {
90 retype(get_nir_src(instr
->src
[0], 1), BRW_REGISTER_TYPE_UD
);
91 int stream_id
= instr
->const_index
[0];
92 gs_emit_vertex(stream_id
);
96 case nir_intrinsic_end_primitive_with_counter
:
98 retype(get_nir_src(instr
->src
[0], 1), BRW_REGISTER_TYPE_UD
);
102 case nir_intrinsic_set_vertex_count
:
104 retype(get_nir_src(instr
->src
[0], 1), BRW_REGISTER_TYPE_UD
);
107 case nir_intrinsic_load_primitive_id
:
108 assert(gs_prog_data
->include_primitive_id
);
109 dest
= get_nir_dest(instr
->dest
, BRW_REGISTER_TYPE_D
);
110 emit(MOV(dest
, retype(brw_vec4_grf(1, 0), BRW_REGISTER_TYPE_D
)));
113 case nir_intrinsic_load_invocation_id
: {
114 src_reg invocation_id
=
115 src_reg(nir_system_values
[SYSTEM_VALUE_INVOCATION_ID
]);
116 assert(invocation_id
.file
!= BAD_FILE
);
117 dest
= get_nir_dest(instr
->dest
, invocation_id
.type
);
118 emit(MOV(dest
, invocation_id
));
123 vec4_visitor::nir_emit_intrinsic(instr
);