def _setup_images_resources(self, staging_alloc, staging_buffer,
data_images):
engine, api, device = self.ctx
mem = engine.memory_manager
# Allocate final images memory
total_images_alloc = 0
for data_image in data_images:
req = hvk.image_memory_requirements(api, device,
data_image.image_handle)
a, o = req.alignment - 1, total_images_alloc
aligned = (o + a) & ~a
data_image.base_offset = aligned
total_images_alloc = aligned + req.size
image_alloc = mem.shared_alloc(total_images_alloc,
(vk.MEMORY_PROPERTY_DEVICE_LOCAL_BIT, ))
# Bind image to memory & create image views
for data_image in data_images:
image_handle = data_image.image_handle
hvk.bind_image_memory(api, device, image_handle,
image_alloc.device_memory,
data_image.base_offset)
data_image._setup_views()
# Update the image layouts to match the requested parameters
self._setup_image_layouts(staging_buffer, data_images)
return image_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 get_resource_requirements(self, resource, resource_type):
_, api, device = self.ctx
requirements = None
if resource_type == vk.STRUCTURE_TYPE_IMAGE_CREATE_INFO:
requirements = hvk.image_memory_requirements(api, device, resource)
elif resource_type == vk.STRUCTURE_TYPE_BUFFER_CREATE_INFO:
requirements = hvk.buffer_memory_requirements(
api, device, resource)
else:
raise ValueError(
"value of argument \"resource_type\" must be STRUCTURE_TYPE_IMAGE_CREATE_INFO or STRUCTURE_TYPE_BUFFER_CREATE_INFO"
)
return requirements
def create_noise_image_output():
global noise_image, noise_view, noise_alloc, noise_sampler
# Noise image
noise_image = hvk.create_image(
api, device,
hvk.image_create_info(format=vk.FORMAT_B8G8R8A8_UNORM,
extent=vk.Extent3D(width=256,
height=256,
depth=1),
usage=vk.IMAGE_USAGE_STORAGE_BIT
| vk.IMAGE_USAGE_SAMPLED_BIT))
noise_memreq = hvk.image_memory_requirements(api, device, noise_image)
mt_index = find_memory_type(vk.MEMORY_HEAP_DEVICE_LOCAL_BIT,
vk.MEMORY_PROPERTY_DEVICE_LOCAL_BIT)
noise_alloc = hvk.allocate_memory(
api, device,
hvk.memory_allocate_info(allocation_size=noise_memreq.size,
memory_type_index=mt_index))
hvk.bind_image_memory(api, device, noise_image, noise_alloc)
# Noise view
noise_view = hvk.create_image_view(
api, device,
hvk.image_view_create_info(image=noise_image,
format=vk.FORMAT_B8G8R8A8_UNORM))
# Noise sampler
noise_sampler = hvk.create_sampler(
api, device,
hvk.sampler_create_info(
mag_filter=vk.FILTER_LINEAR,
min_filter=vk.FILTER_LINEAR,
))
def texture_to_device():
global texture_image, texture_image_memory, texture_image_layout, texture_view, texture_sampler
global texture, staging_texture_buffer, staging_texture_memory
# Create the vulkan image
texture_image_layout = vk.IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL
texture_image = hvk.create_image(
api, device,
hvk.image_create_info(
format=texture.format,
mip_levels=len(texture.mipmaps),
extent=vk.Extent3D(texture.width, texture.height, texture.depth),
usage=vk.IMAGE_USAGE_TRANSFER_DST_BIT | vk.IMAGE_USAGE_SAMPLED_BIT,
))
img_req = hvk.image_memory_requirements(api, device, texture_image)
mt_index = find_memory_type(vk.MEMORY_HEAP_DEVICE_LOCAL_BIT,
vk.MEMORY_HEAP_DEVICE_LOCAL_BIT)
texture_image_memory = hvk.allocate_memory(
api, device,
hvk.memory_allocate_info(allocation_size=img_req.size,
memory_type_index=mt_index))
hvk.bind_image_memory(api, device, texture_image, texture_image_memory, 0)
# Build the copy regions (1 for each mipmap)
regions = []
for i, m in enumerate(texture.mipmaps):
region = hvk.buffer_image_copy(
image_subresource=hvk.image_subresource_layers(mip_level=i),
image_extent=vk.Extent3D(m.width, m.height, 1),
buffer_offset=m.offset)
regions.append(region)
# Build the image barrier for the image layout transitions
barrier = hvk.image_memory_barrier(
image=texture_image,
new_layout=0,
dst_access_mask=0,
subresource_range=hvk.image_subresource_range(
level_count=len(texture.mipmaps)))
# Transfer the staging data to device
hvk.begin_command_buffer(api, staging_cmd, hvk.command_buffer_begin_info())
barrier.new_layout = vk.IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL
barrier.dst_access_mask = vk.ACCESS_TRANSFER_WRITE_BIT
hvk.pipeline_barrier(api,
staging_cmd, (barrier, ),
dst_stage_mask=vk.PIPELINE_STAGE_TRANSFER_BIT)
hvk.copy_buffer_to_image(api, staging_cmd, staging_texture_buffer,
texture_image,
vk.IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, regions)
barrier.old_layout = vk.IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL
barrier.new_layout = vk.IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL
barrier.src_access_mask = vk.ACCESS_TRANSFER_WRITE_BIT
barrier.dst_access_mask = vk.ACCESS_SHADER_READ_BIT
hvk.pipeline_barrier(api,
staging_cmd, (barrier, ),
dst_stage_mask=vk.PIPELINE_STAGE_FRAGMENT_SHADER_BIT)
hvk.end_command_buffer(api, staging_cmd)
# Submit the staging command buffer
hvk.reset_fences(api, device, (staging_fence, ))
submit_info = hvk.submit_info(command_buffers=(staging_cmd, ))
hvk.queue_submit(api,
render_queue.handle, (submit_info, ),
fence=staging_fence)
hvk.wait_for_fences(api, device, (staging_fence, ))
# Create the image view and the sampler
texture_view = hvk.create_image_view(
api, device,
hvk.image_view_create_info(
image=texture_image,
format=texture.format,
subresource_range=hvk.image_subresource_range(
level_count=len(texture.mipmaps))))
texture_sampler = hvk.create_sampler(
api, device,
hvk.sampler_create_info(
mag_filter=vk.FILTER_LINEAR,
min_filter=vk.FILTER_LINEAR,
max_lod=len(texture.mipmaps),
))
# Free staging resources
hvk.destroy_buffer(api, device, staging_texture_buffer)
hvk.free_memory(api, device, staging_texture_memory)
del texture, staging_texture_buffer, staging_texture_memory