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ac/nir: round layer in ac_nir_lower_tex

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Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Georg Lehmann <dadschoorse@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/22636>
This commit is contained in:
Rhys Perry
2023-04-25 15:37:02 +01:00
committed by Marge Bot
parent 1f86be7f8e
commit 3efaaf130a
2 changed files with 23 additions and 1 deletions
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5
src/amd/common/ac_nir.h
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@@ -311,6 +311,11 @@ ac_nir_lower_ps(nir_shader *nir, const ac_nir_lower_ps_options *options);
typedef struct {
enum amd_gfx_level gfx_level;
/* If true, round the layer component of the coordinates source to the nearest
* integer for all array ops.
*/
bool lower_array_layer_round_even;
} ac_nir_lower_tex_options;
bool

19
src/amd/common/ac_nir_lower_tex.c
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@@ -158,13 +158,30 @@ prepare_cube_coords(nir_builder *b, nir_tex_instr *tex, nir_ssa_def **coord, nir
tex->is_array = true;
}
static bool
lower_array_layer_round_even(nir_builder *b, nir_tex_instr *tex, nir_ssa_def **coords)
{
int coord_index = nir_tex_instr_src_index(tex, nir_tex_src_coord);
if (coord_index < 0 || nir_tex_instr_src_type(tex, coord_index) != nir_type_float)
return false;
unsigned layer = tex->coord_components - 1;
nir_ssa_def *rounded_layer = nir_fround_even(b, nir_channel(b, *coords, layer));
*coords = nir_vector_insert_imm(b, *coords, rounded_layer, layer);
return true;
}
static bool
lower_tex_coords(nir_builder *b, nir_tex_instr *tex, nir_ssa_def **coords,
const ac_nir_lower_tex_options *options)
{
bool progress = false;
if (options->lower_array_layer_round_even && tex->is_array && tex->op != nir_texop_lod)
progress |= lower_array_layer_round_even(b, tex, coords);
if (tex->sampler_dim != GLSL_SAMPLER_DIM_CUBE &&
!(tex->sampler_dim == GLSL_SAMPLER_DIM_1D && options->gfx_level == GFX9))
return false;
return progress;
int ddx_idx = nir_tex_instr_src_index(tex, nir_tex_src_ddx);
int ddy_idx = nir_tex_instr_src_index(tex, nir_tex_src_ddy);