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nir: Add a little more docs about NIR's constant_data.

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I think everyone trips over "how does this relate to nir_const", and I was
curious if I could redefine the units of the constant_data_size / indirect
offsets.

Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Reviewed-by: Rob Clark <robdclark@chromium.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6179>
This commit is contained in:
Eric Anholt
2020-07-07 12:25:13 -07:00
committed by Marge Bot
parent 2e833b16bc
commit 041bae28c6
1 changed files with 6 additions and 2 deletions
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8
src/compiler/nir/nir.h
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@@ -3246,10 +3246,14 @@ typedef struct nir_shader {
/** Constant data associated with this shader. /** Constant data associated with this shader.
* *
* Constant data is loaded through load_constant intrinsics. See also * Constant data is loaded through load_constant intrinsics (as compared to
* nir_opt_large_constants. * the NIR load_const instructions which have the constant value inlined
* into them). This is usually generated by nir_opt_large_constants (so
* shaders don't have to load_const into a temporary array when they want
* to indirect on a const array).
*/ */
void *constant_data; void *constant_data;
/** Size of the constant data associated with the shader, in bytes */
unsigned constant_data_size; unsigned constant_data_size;
} nir_shader; } nir_shader;