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nir: Define image load, store and atomic intrinsics.

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v2: Undefine coordinate components not applicable to the target.

Reviewed-by: Connor Abbott <cwabbott0@gmail.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This commit is contained in:
Francisco Jerez
2015-05-05 22:58:39 +03:00
parent ee1a8b5a8c
commit d9e930997f
1 changed files with 27 additions and 0 deletions
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27
src/glsl/nir/nir_intrinsics.h
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@@ -89,6 +89,33 @@ ATOMIC(inc, 0)
ATOMIC(dec, 0)
ATOMIC(read, NIR_INTRINSIC_CAN_ELIMINATE)
/*
* Image load, store and atomic intrinsics.
*
* All image intrinsics take an image target passed as a nir_variable. Image
* variables contain a number of memory and layout qualifiers that influence
* the semantics of the intrinsic.
*
* All image intrinsics take a four-coordinate vector and a sample index as
* first two sources, determining the location within the image that will be
* accessed by the intrinsic. Components not applicable to the image target
* in use are undefined. Image store takes an additional four-component
* argument with the value to be written, and image atomic operations take
* either one or two additional scalar arguments with the same meaning as in
* the ARB_shader_image_load_store specification.
*/
INTRINSIC(image_load, 2, ARR(4, 1), true, 4, 1, 0,
NIR_INTRINSIC_CAN_ELIMINATE)
INTRINSIC(image_store, 3, ARR(4, 1, 4), false, 0, 1, 0, 0)
INTRINSIC(image_atomic_add, 3, ARR(4, 1, 1), true, 1, 1, 0, 0)
INTRINSIC(image_atomic_min, 3, ARR(4, 1, 1), true, 1, 1, 0, 0)
INTRINSIC(image_atomic_max, 3, ARR(4, 1, 1), true, 1, 1, 0, 0)
INTRINSIC(image_atomic_and, 3, ARR(4, 1, 1), true, 1, 1, 0, 0)
INTRINSIC(image_atomic_or, 3, ARR(4, 1, 1), true, 1, 1, 0, 0)
INTRINSIC(image_atomic_xor, 3, ARR(4, 1, 1), true, 1, 1, 0, 0)
INTRINSIC(image_atomic_exchange, 3, ARR(4, 1, 1), true, 1, 1, 0, 0)
INTRINSIC(image_atomic_comp_swap, 4, ARR(4, 1, 1, 1), true, 1, 1, 0, 0)
#define SYSTEM_VALUE(name, components) \
INTRINSIC(load_##name, 0, ARR(), true, components, 0, 0, \
NIR_INTRINSIC_CAN_ELIMINATE | NIR_INTRINSIC_CAN_REORDER)