diff options
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_fs.cpp | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_fs.cpp b/src/mesa/drivers/dri/i965/brw_fs.cpp index c858f449c8f..2283cffb83b 100644 --- a/src/mesa/drivers/dri/i965/brw_fs.cpp +++ b/src/mesa/drivers/dri/i965/brw_fs.cpp @@ -6414,6 +6414,32 @@ brw_nir_set_default_interpolation(const struct gen_device_info *devinfo, var->data.sample = false; } } + + if (per_sample_interpolation) { + nir_foreach_block(block, nir_shader_get_entrypoint(nir)) { + nir_foreach_instr(instr, block) { + if (instr->type != nir_instr_type_intrinsic) + continue; + + nir_intrinsic_instr *intrin = nir_instr_as_intrinsic(instr); + if (intrin->intrinsic != nir_intrinsic_interp_var_at_centroid) + continue; + + nir_variable *var = intrin->variables[0]->var; + if (var->data.interpolation == INTERP_MODE_FLAT) + continue; + + /* The description of the interpolateAtCentroid intrinsic is that + * it interpolates the variable as if it had the "centroid" + * qualifier. When executing with per_sample_interpolation, this + * is equivalent to having the "sample" qualifier. Just convert + * it to a load_var instead. + */ + assert(var->data.sample); + intrin->intrinsic = nir_intrinsic_load_var; + } + } + } } /** |