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nir/lower_tex: Add support for XYUV lowering

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The memory layout associated with this format would be:
Byte:      0 1 2 3
Component: V U Y X

Signed-off-by: Vivek Kasireddy <vivek.kasireddy@intel.com>
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Tapani Pälli <tapani.palli@intel.com>
Reviewed-by: Eric Engestrom <eric.engestrom@intel.com>
This commit is contained in:
Kasireddy, Vivek
2019-02-12 16:02:20 -08:00
committed by Lionel Landwerlin
parent 913d711e0f
commit 78fb3fd17e
2 changed files with 21 additions and 0 deletions
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1
src/compiler/nir/nir.h
View File

@@ -3058,6 +3058,7 @@ typedef struct nir_lower_tex_options {
unsigned lower_yx_xuxv_external;
unsigned lower_xy_uxvx_external;
unsigned lower_ayuv_external;
unsigned lower_xyuv_external;
/**
* To emulate certain texture wrap modes, this can be used

20
src/compiler/nir/nir_lower_tex.c
View File

@@ -451,6 +451,21 @@ lower_ayuv_external(nir_builder *b, nir_tex_instr *tex,
nir_channel(b, ayuv, 3));
}
static void
lower_xyuv_external(nir_builder *b, nir_tex_instr *tex,
const nir_lower_tex_options *options)
{
b->cursor = nir_after_instr(&tex->instr);
nir_ssa_def *xyuv = sample_plane(b, tex, 0, options);
convert_yuv_to_rgb(b, tex,
nir_channel(b, xyuv, 2),
nir_channel(b, xyuv, 1),
nir_channel(b, xyuv, 0),
nir_imm_float(b, 1.0f));
}
/*
* Converts a nir_texop_txd instruction to nir_texop_txl with the given lod
* computed from the gradients.
@@ -958,6 +973,11 @@ nir_lower_tex_block(nir_block *block, nir_builder *b,
progress = true;
}
if ((1 << tex->texture_index) & options->lower_xyuv_external) {
lower_xyuv_external(b, tex, options);
progress = true;
}
if (sat_mask) {
saturate_src(b, tex, sat_mask);
progress = true;