def _setup_depth_stencil(self):
engine, api, device = self.ctx
width, height = engine.info["swapchain_extent"].values()
depth_format = engine.info["depth_format"]
mem = engine.memory_manager
if self.depth_stencil is not None:
hvk.destroy_image_view(api, device, self.depth_stencil.view)
hvk.destroy_image(api, device, self.depth_stencil.image)
mem.free_alloc(self.depth_stencil_alloc)
depth_stencil_image = hvk.create_image(
api, device,
hvk.image_create_info(
format=depth_format,
extent=vk.Extent3D(width=width, height=height, depth=1),
usage=vk.IMAGE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT))
alloc = mem.alloc(depth_stencil_image,
vk.STRUCTURE_TYPE_IMAGE_CREATE_INFO,
types=(vk.MEMORY_PROPERTY_DEVICE_LOCAL_BIT, ))
depth_stencil_view = hvk.create_image_view(
api, device,
hvk.image_view_create_info(
image=depth_stencil_image,
format=depth_format,
subresource_range=hvk.image_subresource_range(
aspect_mask=vk.IMAGE_ASPECT_DEPTH_BIT
| vk.IMAGE_ASPECT_STENCIL_BIT)))
self.depth_stencil = ImageAndView(image=depth_stencil_image,
view=depth_stencil_view)
self.depth_stencil_alloc = alloc
def setup_swapchain_depth_stencil(recreate=False):
global depth_format, depth_stencil, depth_alloc, depth_view
if recreate:
hvk.destroy_image_view(api, device, depth_view)
hvk.destroy_image(api, device, depth_stencil)
hvk.free_memory(api, device, depth_alloc)
width, height = window.dimensions()
# Depth stencil attachment setup
depth_format = None
depth_formats = (vk.FORMAT_D32_SFLOAT_S8_UINT, vk.FORMAT_D24_UNORM_S8_UINT,
vk.FORMAT_D16_UNORM_S8_UINT)
for fmt in depth_formats:
prop = hvk.physical_device_format_properties(api, physical_device, fmt)
if IntFlag(vk.FORMAT_FEATURE_DEPTH_STENCIL_ATTACHMENT_BIT) in IntFlag(
prop.optimal_tiling_features):
depth_format = fmt
break
if depth_format is None:
raise RuntimeError("Failed to find a suitable depth stencil format.")
# Depth stencil image creation
depth_stencil = hvk.create_image(
api, device,
hvk.image_create_info(format=depth_format,
extent=vk.Extent3D(width=width,
height=height,
depth=1),
usage=vk.IMAGE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT
| vk.IMAGE_USAGE_TRANSFER_SRC_BIT))
# Depth stencil image memory
image_memreq = hvk.image_memory_requirements(api, device, depth_stencil)
mt_index = find_memory_type(vk.MEMORY_HEAP_DEVICE_LOCAL_BIT,
vk.MEMORY_PROPERTY_DEVICE_LOCAL_BIT)
depth_stencil_size = image_memreq.size * 2
depth_alloc = hvk.allocate_memory(
api, device,
hvk.memory_allocate_info(allocation_size=depth_stencil_size,
memory_type_index=mt_index))
hvk.bind_image_memory(api, device, depth_stencil, depth_alloc)
# Depth stencil image view
depth_view = hvk.create_image_view(
api, device,
hvk.image_view_create_info(
image=depth_stencil,
format=depth_format,
subresource_range=hvk.image_subresource_range(
aspect_mask=vk.IMAGE_ASPECT_DEPTH_BIT
| vk.IMAGE_ASPECT_STENCIL_BIT)))
def clean_resources():
window.hide()
hvk.device_wait_idle(api, device)
hvk.destroy_fence(api, device, staging_fence)
hvk.destroy_command_pool(api, device, staging_pool)
hvk.destroy_command_pool(api, device, drawing_pool)
hvk.destroy_buffer(api, device, mesh_buffer)
hvk.free_memory(api, device, mesh_memory)
hvk.destroy_sampler(api, device, texture_sampler)
hvk.destroy_image_view(api, device, texture_view)
hvk.destroy_image(api, device, texture_image)
hvk.free_memory(api, device, texture_image_memory)
hvk.destroy_descriptor_pool(api, device, descriptor_pool)
hvk.destroy_buffer(api, device, uniforms_buffer)
hvk.free_memory(api, device, uniforms_mem)
hvk.destroy_pipeline(api, device, pipeline)
hvk.destroy_pipeline_cache(api, device, pipeline_cache)
hvk.destroy_pipeline_layout(api, device, pipeline_layout)
for m in shader_modules:
hvk.destroy_shader_module(api, device, m)
hvk.destroy_descriptor_set_layout(api, device, descriptor_set_layout)
for fb in framebuffers:
hvk.destroy_framebuffer(api, device, fb)
hvk.destroy_render_pass(api, device, render_pass)
hvk.destroy_semaphore(api, device, image_ready)
hvk.destroy_semaphore(api, device, rendering_done)
for f in render_fences:
hvk.destroy_fence(api, device, f)
hvk.destroy_image(api, device, depth_stencil)
hvk.destroy_image_view(api, device, depth_view)
hvk.free_memory(api, device, depth_alloc)
for v in swapchain_image_views:
hvk.destroy_image_view(api, device, v)
hvk.destroy_swapchain(api, device, swapchain)
hvk.destroy_device(api, device)
hvk.destroy_surface(api, instance, surface)
debugger.stop()
hvk.destroy_instance(api, instance)
window.destroy()
def free(self):
ctx, api, device = self.ctx
memory_manager = ctx.memory_manager
hvk.destroy_image_view(api, device, self.depth_stencil.view)
hvk.destroy_image(api, device, self.depth_stencil.image)
memory_manager.free_alloc(self.depth_stencil_alloc)
for fb in self.framebuffers:
hvk.destroy_framebuffer(api, device, fb)
for (_, view) in self.swapchain_images:
hvk.destroy_image_view(api, device, view)
hvk.destroy_render_pass(api, device, self.render_pass)
del self.engine
def free(self):
engine, api, device = self.ctx
hvk.destroy_image(api, device, self.image_handle)