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nir: Add intrinsics to do alternate interpolation on inputs 

Reviewed-by: Connor Abbott <cwabbott0@gmail.com>
This commit is contained in:
Jason Ekstrand 2014-10-17 17:11:34 -07:00
parent 4b4f90dbff
commit b600f1a381
1 changed files with 35 additions and 17 deletions
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52
src/glsl/nir/nir_intrinsics.h
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@ -94,24 +94,26 @@ SYSTEM_VALUE(sample_pos, 2)
SYSTEM_VALUE(sample_mask_in, 1)
SYSTEM_VALUE(invocation_id, 1)
#define LOAD(name, num_indices, flags) \
INTRINSIC(load_##name##_vec1, 0, ARR(), true, 1, 0, num_indices, \
NIR_INTRINSIC_CAN_ELIMINATE | flags) \
INTRINSIC(load_##name##_vec2, 0, ARR(), true, 2, 0, num_indices, \
NIR_INTRINSIC_CAN_ELIMINATE | flags) \
INTRINSIC(load_##name##_vec3, 0, ARR(), true, 3, 0, num_indices, \
NIR_INTRINSIC_CAN_ELIMINATE | flags) \
INTRINSIC(load_##name##_vec4, 0, ARR(), true, 4, 0, num_indices, \
NIR_INTRINSIC_CAN_ELIMINATE | flags) \
INTRINSIC(load_##name##_vec1_indirect, 1, ARR(1), true, 1, 0, num_indices, \
NIR_INTRINSIC_CAN_ELIMINATE | flags) \
INTRINSIC(load_##name##_vec2_indirect, 1, ARR(1), true, 2, 0, num_indices, \
NIR_INTRINSIC_CAN_ELIMINATE | flags) \
INTRINSIC(load_##name##_vec3_indirect, 1, ARR(1), true, 3, 0, num_indices, \
NIR_INTRINSIC_CAN_ELIMINATE | flags) \
INTRINSIC(load_##name##_vec4_indirect, 1, ARR(1), true, 4, 0, num_indices, \
NIR_INTRINSIC_CAN_ELIMINATE | flags) \
#define LOAD_OR_INTERP(name, num_srcs, src_comps, num_indices, flags) \
INTRINSIC(name##_vec1, num_srcs, ARR(src_comps), true, 1, \
0, num_indices, NIR_INTRINSIC_CAN_ELIMINATE | flags) \
INTRINSIC(name##_vec2, num_srcs, ARR(src_comps), true, 2, \
0, num_indices, NIR_INTRINSIC_CAN_ELIMINATE | flags) \
INTRINSIC(name##_vec3, num_srcs, ARR(src_comps), true, 3, \
0, num_indices, NIR_INTRINSIC_CAN_ELIMINATE | flags) \
INTRINSIC(name##_vec4, num_srcs, ARR(src_comps), true, 4, \
0, num_indices, NIR_INTRINSIC_CAN_ELIMINATE | flags) \
INTRINSIC(name##_vec1_indirect, 1 + num_srcs, ARR(1, src_comps), true, 1, \
0, num_indices, NIR_INTRINSIC_CAN_ELIMINATE | flags) \
INTRINSIC(name##_vec2_indirect, 1 + num_srcs, ARR(1, src_comps), true, 2, \
0, num_indices, NIR_INTRINSIC_CAN_ELIMINATE | flags) \
INTRINSIC(name##_vec3_indirect, 1 + num_srcs, ARR(1, src_comps), true, 3, \
0, num_indices, NIR_INTRINSIC_CAN_ELIMINATE | flags) \
INTRINSIC(name##_vec4_indirect, 1 + num_srcs, ARR(1, src_comps), true, 4, \
0, num_indices, NIR_INTRINSIC_CAN_ELIMINATE | flags)
#define LOAD(name, num_indices, flags) \
LOAD_OR_INTERP(load_##name, 0, 0, num_indices, flags)
/*
* The first index is the address to load from, and the second index is the
@ -132,6 +134,22 @@ LOAD(ubo, 3, NIR_INTRINSIC_CAN_REORDER)
LOAD(input, 2, NIR_INTRINSIC_CAN_REORDER)
/* LOAD(ssbo, 2, 0) */
/*
* Interpolation of input. These are similar to the load_input* intrinsics
* except they interpolate differently. The interp_at_offset* and
* interp_at_offset* intrinsics take a second source that is either a
* sample id or a vec2 position offset.
*/
#define INTERP(name, flags) \
LOAD_OR_INTERP(interp_##name, 0, 0, 2, flags)
#define INTERP_WITH_ARG(name, src_comps, flags) \
LOAD_OR_INTERP(interp_##name, 1, src_comps, 2, flags)
INTERP(at_centroid, NIR_INTRINSIC_CAN_REORDER)
INTERP_WITH_ARG(at_sample, 1, NIR_INTRINSIC_CAN_REORDER)
INTERP_WITH_ARG(at_offset, 1, NIR_INTRINSIC_CAN_REORDER)
#define STORE(name, num_indices, flags) \
INTRINSIC(store_##name##_vec1, 1, ARR(1), false, 0, 0, num_indices, flags) \
INTRINSIC(store_##name##_vec2, 1, ARR(2), false, 0, 0, num_indices, flags) \