def _setup_vertex_state(self):
mapping = self.shader.mapping
bindings = []
attributes = []
attribute_names = []
for binding in mapping["bindings"]:
bindings.append(
hvk.vertex_input_binding_description(binding=binding["id"],
stride=binding["stride"]))
for attr in mapping["attributes"]:
attributes.append(
hvk.vertex_input_attribute_description(
location=attr["location"],
binding=attr["binding"],
format=attr["format"],
offset=attr.get("offset", 0)))
self.ordered_attribute_names = tuple(
a["name"]
for a in sorted(mapping["attributes"], key=lambda i: i["binding"]))
self.vertex_input_state = hvk.pipeline_vertex_input_state_create_info(
vertex_binding_descriptions=bindings,
vertex_attribute_descriptions=attributes)
def setup_vertex_input_binding():
global vertex_bindings, vertex_attributes
# Setup shader vertex input state
position_binding = hvk.vertex_input_binding_description(
binding=0, stride=hvk.utils.format_size(vk.FORMAT_R32G32B32_SFLOAT))
normals_binding = hvk.vertex_input_binding_description(
binding=1, stride=hvk.utils.format_size(vk.FORMAT_R32G32B32_SFLOAT))
position_attribute = hvk.vertex_input_attribute_description(
location=0, binding=0, format=vk.FORMAT_R32G32B32_SFLOAT, offset=0)
normals_attribute = hvk.vertex_input_attribute_description(
location=1, binding=1, format=vk.FORMAT_R32G32B32_SFLOAT, offset=0)
vertex_bindings = (position_binding, normals_binding)
vertex_attributes = (position_attribute, normals_attribute)