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compiler: Add SYSTEM_VALUE_IS_INDEXED_DRAW and instrinsics

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This VS system value contains if the draw command used to start the
rendering was an indexed draw command or a non-indexed one
(~0/0 respectively). Useful to calculate the gl_BaseVertex as:
(SYSTEM_VALUE_IS_INDEXED_DRAW & SYSTEM_VALUE_FIRST_VERTEX).

Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
This commit is contained in:
Antia Puentes
2018-04-28 14:09:18 +02:00
parent 0737c1e3a6
commit 9e6b886cf2
5 changed files with 14 additions and 0 deletions
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4
src/compiler/nir/nir.c
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@@ -1991,6 +1991,8 @@ nir_intrinsic_from_system_value(gl_system_value val)
return nir_intrinsic_load_base_instance;
case SYSTEM_VALUE_VERTEX_ID_ZERO_BASE:
return nir_intrinsic_load_vertex_id_zero_base;
case SYSTEM_VALUE_IS_INDEXED_DRAW:
return nir_intrinsic_load_is_indexed_draw;
case SYSTEM_VALUE_FIRST_VERTEX:
return nir_intrinsic_load_first_vertex;
case SYSTEM_VALUE_BASE_VERTEX:
@@ -2070,6 +2072,8 @@ nir_system_value_from_intrinsic(nir_intrinsic_op intrin)
return SYSTEM_VALUE_VERTEX_ID_ZERO_BASE;
case nir_intrinsic_load_first_vertex:
return SYSTEM_VALUE_FIRST_VERTEX;
case nir_intrinsic_load_is_indexed_draw:
return SYSTEM_VALUE_IS_INDEXED_DRAW;
case nir_intrinsic_load_base_vertex:
return SYSTEM_VALUE_BASE_VERTEX;
case nir_intrinsic_load_invocation_id: