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nir: add a new v3d-specific intrinsic for tile buffer color reads

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This is intended to be used, for example, with OpenGL logic operations. It
takes a render target as source and a sample index in the base index for
MSAA color reads.

v2: drop the CAN_ELIMINATE and CAN_REORDER flags (Eric).

Reviewed-by: Eric Anholt <eric@anholt.net>
This commit is contained in:
Iago Toral Quiroga 2019-07-09 09:15:02 +02:00
parent 6af1bdefa9
commit b0eec9e27d
1 changed files with 9 additions and 0 deletions
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9
src/compiler/nir/nir_intrinsics.py
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@ -776,3 +776,12 @@ intrinsic("ssbo_atomic_comp_swap_ir3", src_comp=[1, 1, 1, 1, 1], dest_comp=1)
# src[] = { value }
store("raw_output_pan", 1, [])
load("raw_output_pan", 0, [], [CAN_ELIMINATE, CAN_REORDER])
# V3D-specific instrinc for tile buffer color reads.
#
# The hardware requires that we read the samples and components of a pixel
# in order, so we cannot eliminate or remove any loads in a sequence.
#
# src[] = { render_target }
# BASE = sample index
load("tlb_color_v3d", 1, [BASE, COMPONENT], [])