fdo-mirrors/mesa
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/mesa/mesa.git synced 2026-05-05 05:18:08 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions 2

nvk: Replace gl_SamplePosition with fract(gl_FragCoord.xy)

Browse source 
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/24326>
This commit is contained in:
Faith Ekstrand 2023-01-30 20:12:03 -06:00 • committed by Marge Bot
parent 4bd2ba31fc
commit d6a0c1cd4b
1 changed files with 11 additions and 4 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

15
src/nouveau/vulkan/nvk_shader.c
View file

@ -146,31 +146,38 @@ static bool
lower_fragcoord_instr(nir_builder *b, nir_instr *instr, UNUSED void *_data)
{
assert(b->shader->info.stage == MESA_SHADER_FRAGMENT);
nir_variable *var;
if (instr->type != nir_instr_type_intrinsic)
return false;
nir_intrinsic_instr *intrin = nir_instr_as_intrinsic(instr);
b->cursor = nir_before_instr(&intrin->instr);
nir_variable *var;
nir_ssa_def *val;
switch (intrin->intrinsic) {
case nir_intrinsic_load_frag_coord:
var = find_or_create_input(b, glsl_vec4_type(),
"gl_FragCoord",
VARYING_SLOT_POS);
val = nir_load_var(b, var);
break;
case nir_intrinsic_load_sample_pos:
var = find_or_create_input(b, glsl_vec4_type(),
"gl_FragCoord",
VARYING_SLOT_POS);
val = nir_ffract(b, nir_trim_vector(b, nir_load_var(b, var), 2));
break;
case nir_intrinsic_load_layer_id:
var = find_or_create_input(b, glsl_int_type(),
"gl_Layer", VARYING_SLOT_LAYER);
val = nir_load_var(b, var);
break;
default:
return false;
}
b->cursor = nir_before_instr(&intrin->instr);
nir_ssa_def *val = nir_load_var(b, var);
nir_ssa_def_rewrite_uses(&intrin->dest.ssa, val);
return true;