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brw/nir_lower_fs_load_output: optimize pixel coord

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this saves a conversion or two.

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@intel.com>
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/40829>
This commit is contained in:
Alyssa Rosenzweig 2025-12-11 12:39:28 -05:00 • committed by Marge Bot
parent 1d0f42c264
commit 959ec01ac8
1 changed files with 3 additions and 2 deletions
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5
src/intel/compiler/brw/brw_nir_lower_fs_load_output.c
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@ -36,10 +36,11 @@ brw_nir_lower_fs_load_output_instr(nir_builder *b,
* images.
*/
nir_def *size = nir_txs(b, .dim = GLSL_SAMPLER_DIM_3D, .texture_index = target);
nir_def *pixel_coords = nir_load_pixel_coord(b);
nir_def *coords[3] = {
nir_f2u32(b, nir_channel(b, nir_load_frag_coord(b), 0)),
nir_f2u32(b, nir_channel(b, nir_load_frag_coord(b), 1)),
nir_u2u32(b, nir_channel(b, pixel_coords, 0)),
nir_u2u32(b, nir_channel(b, pixel_coords, 1)),
nir_load_layer_id(b),
};