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nir: Add intrinsics for lowering bindless textures/samplers

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Needed for merged stages to work properly.

Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Reviewed-by: Antonino Maniscalco <antonino.maniscalco@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/26056>
This commit is contained in:
Alyssa Rosenzweig
2023-11-05 12:58:20 -04:00
committed by Marge Bot
parent 33e80918de
commit d0a4a8cda0
1 changed files with 23 additions and 1 deletions
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24
src/compiler/nir/nir_intrinsics.py
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@@ -1703,6 +1703,24 @@ store("tlb_sample_color_v3d", [1], [BASE, COMPONENT, SRC_TYPE], [])
# the target framebuffer
intrinsic("load_fb_layers_v3d", dest_comp=1, flags=[CAN_ELIMINATE, CAN_REORDER])
# Load a bindless sampler handle mapping a binding table sampler.
intrinsic("load_sampler_handle_agx", [1], 1, [],
flags=[CAN_ELIMINATE, CAN_REORDER],
bit_sizes=[16])
# Load a bindless texture handle mapping a binding table texture.
intrinsic("load_texture_handle_agx", [1], 2, [],
flags=[CAN_ELIMINATE, CAN_REORDER],
bit_sizes=[32])
# Given a vec2 bindless texture handle, load the address of the texture
# descriptor described by that vec2. This allows inspecting the descriptor from
# the shader. This does not actually load the content of the descriptor, only
# the content of the handle (which is the address of the descriptor).
intrinsic("load_from_texture_handle_agx", [2], 1, [],
flags=[CAN_ELIMINATE, CAN_REORDER],
bit_sizes=[64])
# Load the coefficient register corresponding to a given fragment shader input.
# Coefficient registers are vec3s that are dotted with <x, y, 1> to interpolate
# the input, where x and y are relative to the 32x32 supertile.
@@ -1794,7 +1812,11 @@ intrinsic("load_vbo_base_agx", src_comp=[1], dest_comp=1, bit_sizes=[64],
# Load a driver-internal system value from a given system value set at a given
# binding within the set. This is used for correctness when lowering things like
# UBOs with merged shaders.
load("sysval_agx", [], [DESC_SET, BINDING], [CAN_REORDER, CAN_ELIMINATE])
#
# The FLAGS are used internally for loading the index of the uniform itself,
# rather than the contents, used for lowering bindless handles (which encode
# uniform indices as immediates in the NIR for technical reasons).
load("sysval_agx", [], [DESC_SET, BINDING, FLAGS], [CAN_REORDER, CAN_ELIMINATE])
# Write out a sample mask for a targeted subset of samples, specified in the two
# masks. Maps to the corresponding AGX instruction, the actual workings are