diff options
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_fs_nir.cpp | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_fs_nir.cpp b/src/mesa/drivers/dri/i965/brw_fs_nir.cpp index 9a767455106..dbfb27400e4 100644 --- a/src/mesa/drivers/dri/i965/brw_fs_nir.cpp +++ b/src/mesa/drivers/dri/i965/brw_fs_nir.cpp @@ -199,11 +199,32 @@ fs_visitor::nir_setup_inputs(nir_shader *shader) struct hash_entry *entry; hash_table_foreach(shader->inputs, entry) { nir_variable *var = (nir_variable *) entry->data; + enum brw_reg_type type = brw_type_for_base_type(var->type); fs_reg input = offset(nir_inputs, var->data.driver_location); fs_reg reg; switch (stage) { - case MESA_SHADER_VERTEX: + case MESA_SHADER_VERTEX: { + /* Our ATTR file is indexed by VERT_ATTRIB_*, which is the value + * stored in nir_variable::location. + * + * However, NIR's load_input intrinsics use a different index - an + * offset into a single contiguous array containing all inputs. + * This index corresponds to the nir_variable::driver_location field. + * + * So, we need to copy from fs_reg(ATTR, var->location) to + * offset(nir_inputs, var->data.driver_location). + */ + unsigned components = var->type->without_array()->components(); + unsigned array_length = var->type->is_array() ? var->type->length : 1; + for (unsigned i = 0; i < array_length; i++) { + for (unsigned j = 0; j < components; j++) { + emit(MOV(retype(offset(input, components * i + j), type), + offset(fs_reg(ATTR, var->data.location + i, type), j))); + } + } + break; + } case MESA_SHADER_GEOMETRY: case MESA_SHADER_COMPUTE: unreachable("fs_visitor not used for these stages yet."); |