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#[cfg(feature = "trace")]
use crate::device::trace::Command as TraceCommand;
use crate::{
api_log,
command::{clear_texture, CommandEncoderError},
conv,
device::{Device, DeviceError, MissingDownlevelFlags},
global::Global,
id::{BufferId, CommandEncoderId, TextureId},
init_tracker::{
has_copy_partial_init_tracker_coverage, MemoryInitKind, TextureInitRange,
TextureInitTrackerAction,
},
resource::{
DestroyedResourceError, InvalidResourceError, MissingBufferUsageError,
MissingTextureUsageError, ParentDevice, Texture, TextureErrorDimension,
},
snatch::SnatchGuard,
track::TextureSelector,
};
use arrayvec::ArrayVec;
use thiserror::Error;
use wgt::{BufferAddress, BufferUsages, Extent3d, TextureUsages};
use std::sync::Arc;
use super::{ClearError, CommandBufferMutable};
pub type ImageCopyBuffer = wgt::ImageCopyBuffer<BufferId>;
pub type ImageCopyTexture = wgt::ImageCopyTexture<TextureId>;
pub type ImageCopyTextureTagged = wgt::ImageCopyTextureTagged<TextureId>;
#[derive(Clone, Copy, Debug)]
pub enum CopySide {
Source,
Destination,
}
/// Error encountered while attempting a data transfer.
#[derive(Clone, Debug, Error)]
#[non_exhaustive]
pub enum TransferError {
#[error("Source and destination cannot be the same buffer")]
SameSourceDestinationBuffer,
#[error(transparent)]
MissingBufferUsage(#[from] MissingBufferUsageError),
#[error(transparent)]
MissingTextureUsage(#[from] MissingTextureUsageError),
#[error("Destination texture is missing the `RENDER_ATTACHMENT` usage flag")]
MissingRenderAttachmentUsageFlag(TextureId),
#[error("Copy of {start_offset}..{end_offset} would end up overrunning the bounds of the {side:?} buffer of size {buffer_size}")]
BufferOverrun {
start_offset: BufferAddress,
end_offset: BufferAddress,
buffer_size: BufferAddress,
side: CopySide,
},
#[error("Copy of {dimension:?} {start_offset}..{end_offset} would end up overrunning the bounds of the {side:?} texture of {dimension:?} size {texture_size}")]
TextureOverrun {
start_offset: u32,
end_offset: u32,
texture_size: u32,
dimension: TextureErrorDimension,
side: CopySide,
},
#[error("Unable to select texture aspect {aspect:?} from format {format:?}")]
InvalidTextureAspect {
format: wgt::TextureFormat,
aspect: wgt::TextureAspect,
},
#[error("Unable to select texture mip level {level} out of {total}")]
InvalidTextureMipLevel { level: u32, total: u32 },
#[error("Texture dimension must be 2D when copying from an external texture")]
InvalidDimensionExternal(TextureId),
#[error("Buffer offset {0} is not aligned to block size or `COPY_BUFFER_ALIGNMENT`")]
UnalignedBufferOffset(BufferAddress),
#[error("Copy size {0} does not respect `COPY_BUFFER_ALIGNMENT`")]
UnalignedCopySize(BufferAddress),
#[error("Copy width is not a multiple of block width")]
UnalignedCopyWidth,
#[error("Copy height is not a multiple of block height")]
UnalignedCopyHeight,
#[error("Copy origin's x component is not a multiple of block width")]
UnalignedCopyOriginX,
#[error("Copy origin's y component is not a multiple of block height")]
UnalignedCopyOriginY,
#[error("Bytes per row does not respect `COPY_BYTES_PER_ROW_ALIGNMENT`")]
UnalignedBytesPerRow,
#[error("Number of bytes per row needs to be specified since more than one row is copied")]
UnspecifiedBytesPerRow,
#[error("Number of rows per image needs to be specified since more than one image is copied")]
UnspecifiedRowsPerImage,
#[error("Number of bytes per row is less than the number of bytes in a complete row")]
InvalidBytesPerRow,
#[error("Image is 1D and the copy height and depth are not both set to 1")]
InvalidCopySize,
#[error("Number of rows per image is invalid")]
InvalidRowsPerImage,
#[error("Copy source aspects must refer to all aspects of the source texture format")]
CopySrcMissingAspects,
#[error(
"Copy destination aspects must refer to all aspects of the destination texture format"
)]
CopyDstMissingAspects,
#[error("Copy aspect must refer to a single aspect of texture format")]
CopyAspectNotOne,
#[error("Copying from textures with format {format:?} and aspect {aspect:?} is forbidden")]
CopyFromForbiddenTextureFormat {
format: wgt::TextureFormat,
aspect: wgt::TextureAspect,
},
#[error("Copying to textures with format {format:?} and aspect {aspect:?} is forbidden")]
CopyToForbiddenTextureFormat {
format: wgt::TextureFormat,
aspect: wgt::TextureAspect,
},
#[error(
"Copying to textures with format {0:?} is forbidden when copying from external texture"
)]
ExternalCopyToForbiddenTextureFormat(wgt::TextureFormat),
#[error(
"Source format ({src_format:?}) and destination format ({dst_format:?}) are not copy-compatible (they may only differ in srgb-ness)"
)]
TextureFormatsNotCopyCompatible {
src_format: wgt::TextureFormat,
dst_format: wgt::TextureFormat,
},
#[error(transparent)]
MemoryInitFailure(#[from] ClearError),
#[error("Cannot encode this copy because of a missing downelevel flag")]
MissingDownlevelFlags(#[from] MissingDownlevelFlags),
#[error("Source texture sample count must be 1, got {sample_count}")]
InvalidSampleCount { sample_count: u32 },
#[error("Requested mip level {requested} does no exist (count: {count})")]
InvalidMipLevel { requested: u32, count: u32 },
}
/// Error encountered while attempting to do a copy on a command encoder.
#[derive(Clone, Debug, Error)]
#[non_exhaustive]
pub enum CopyError {
#[error(transparent)]
Encoder(#[from] CommandEncoderError),
#[error("Copy error")]
Transfer(#[from] TransferError),
#[error(transparent)]
DestroyedResource(#[from] DestroyedResourceError),
#[error(transparent)]
InvalidResource(#[from] InvalidResourceError),
}
impl From<DeviceError> for CopyError {
fn from(err: DeviceError) -> Self {
CopyError::Encoder(CommandEncoderError::Device(err))
}
}
pub(crate) fn extract_texture_selector(
copy_texture: &ImageCopyTexture,
copy_size: &Extent3d,
texture: &Texture,
) -> Result<(TextureSelector, hal::TextureCopyBase), TransferError> {
let format = texture.desc.format;
let copy_aspect = hal::FormatAspects::new(format, copy_texture.aspect);
if copy_aspect.is_empty() {
return Err(TransferError::InvalidTextureAspect {
format,
aspect: copy_texture.aspect,
});
}
let (layers, origin_z) = match texture.desc.dimension {
wgt::TextureDimension::D1 => (0..1, 0),
wgt::TextureDimension::D2 => (
copy_texture.origin.z..copy_texture.origin.z + copy_size.depth_or_array_layers,
0,
),
wgt::TextureDimension::D3 => (0..1, copy_texture.origin.z),
};
let base = hal::TextureCopyBase {
origin: wgt::Origin3d {
x: copy_texture.origin.x,
y: copy_texture.origin.y,
z: origin_z,
},
// this value will be incremented per copied layer
array_layer: layers.start,
mip_level: copy_texture.mip_level,
aspect: copy_aspect,
};
let selector = TextureSelector {
mips: copy_texture.mip_level..copy_texture.mip_level + 1,
layers,
};
Ok((selector, base))
}
/// WebGPU's [validating linear texture data][vltd] algorithm.
///
/// Copied with some modifications from WebGPU standard.
///
/// If successful, returns a pair `(bytes, stride)`, where:
/// - `bytes` is the number of buffer bytes required for this copy, and
/// - `stride` number of bytes between array layers.
///
pub(crate) fn validate_linear_texture_data(
layout: &wgt::ImageDataLayout,
format: wgt::TextureFormat,
aspect: wgt::TextureAspect,
buffer_size: BufferAddress,
buffer_side: CopySide,
copy_size: &Extent3d,
need_copy_aligned_rows: bool,
) -> Result<(BufferAddress, BufferAddress), TransferError> {
// Convert all inputs to BufferAddress (u64) to avoid some of the overflow issues
// Note: u64 is not always enough to prevent overflow, especially when multiplying
// something with a potentially large depth value, so it is preferable to validate
// the copy size before calling this function (for example via `validate_texture_copy_range`).
let copy_width = copy_size.width as BufferAddress;
let copy_height = copy_size.height as BufferAddress;
let depth_or_array_layers = copy_size.depth_or_array_layers as BufferAddress;
let offset = layout.offset;
let block_size = format.block_copy_size(Some(aspect)).unwrap() as BufferAddress;
let (block_width, block_height) = format.block_dimensions();
let block_width = block_width as BufferAddress;
let block_height = block_height as BufferAddress;
if copy_width % block_width != 0 {
return Err(TransferError::UnalignedCopyWidth);
}
if copy_height % block_height != 0 {
return Err(TransferError::UnalignedCopyHeight);
}
let width_in_blocks = copy_width / block_width;
let height_in_blocks = copy_height / block_height;
let bytes_in_last_row = width_in_blocks * block_size;
let bytes_per_row = if let Some(bytes_per_row) = layout.bytes_per_row {
let bytes_per_row = bytes_per_row as BufferAddress;
if bytes_per_row < bytes_in_last_row {
return Err(TransferError::InvalidBytesPerRow);
}
bytes_per_row
} else {
if depth_or_array_layers > 1 || height_in_blocks > 1 {
return Err(TransferError::UnspecifiedBytesPerRow);
}
0
};
let rows_per_image = if let Some(rows_per_image) = layout.rows_per_image {
let rows_per_image = rows_per_image as BufferAddress;
if rows_per_image < height_in_blocks {
return Err(TransferError::InvalidRowsPerImage);
}
rows_per_image
} else {
if depth_or_array_layers > 1 {
return Err(TransferError::UnspecifiedRowsPerImage);
}
0
};
if need_copy_aligned_rows {
let bytes_per_row_alignment = wgt::COPY_BYTES_PER_ROW_ALIGNMENT as BufferAddress;
let mut offset_alignment = block_size;
if format.is_depth_stencil_format() {
offset_alignment = 4
}
if offset % offset_alignment != 0 {
return Err(TransferError::UnalignedBufferOffset(offset));
}
if bytes_per_row % bytes_per_row_alignment != 0 {
return Err(TransferError::UnalignedBytesPerRow);
}
}
let bytes_per_image = bytes_per_row * rows_per_image;
let required_bytes_in_copy = if depth_or_array_layers == 0 {
0
} else {
let mut required_bytes_in_copy = bytes_per_image * (depth_or_array_layers - 1);
if height_in_blocks > 0 {
required_bytes_in_copy += bytes_per_row * (height_in_blocks - 1) + bytes_in_last_row;
}
required_bytes_in_copy
};
if offset + required_bytes_in_copy > buffer_size {
return Err(TransferError::BufferOverrun {
start_offset: offset,
end_offset: offset + required_bytes_in_copy,
buffer_size,
side: buffer_side,
});
}
Ok((required_bytes_in_copy, bytes_per_image))
}
/// WebGPU's [validating texture copy range][vtcr] algorithm.
///
/// Copied with minor modifications from WebGPU standard.
///
/// Returns the HAL copy extent and the layer count.
///
pub(crate) fn validate_texture_copy_range(
texture_copy_view: &ImageCopyTexture,
desc: &wgt::TextureDescriptor<(), Vec<wgt::TextureFormat>>,
texture_side: CopySide,
copy_size: &Extent3d,
) -> Result<(hal::CopyExtent, u32), TransferError> {
let (block_width, block_height) = desc.format.block_dimensions();
let extent_virtual = desc.mip_level_size(texture_copy_view.mip_level).ok_or(
TransferError::InvalidTextureMipLevel {
level: texture_copy_view.mip_level,
total: desc.mip_level_count,
},
)?;
// physical size can be larger than the virtual
let extent = extent_virtual.physical_size(desc.format);
/// Return `Ok` if a run `size` texels long starting at `start_offset` falls
/// entirely within `texture_size`. Otherwise, return an appropriate a`Err`.
fn check_dimension(
dimension: TextureErrorDimension,
side: CopySide,
start_offset: u32,
size: u32,
texture_size: u32,
) -> Result<(), TransferError> {
// Avoid underflow in the subtraction by checking start_offset against
// texture_size first.
if start_offset <= texture_size && size <= texture_size - start_offset {
Ok(())
} else {
Err(TransferError::TextureOverrun {
start_offset,
end_offset: start_offset.wrapping_add(size),
texture_size,
dimension,
side,
})
}
}
check_dimension(
TextureErrorDimension::X,
texture_side,
texture_copy_view.origin.x,
copy_size.width,
extent.width,
)?;
check_dimension(
TextureErrorDimension::Y,
texture_side,
texture_copy_view.origin.y,
copy_size.height,
extent.height,
)?;
check_dimension(
TextureErrorDimension::Z,
texture_side,
texture_copy_view.origin.z,
copy_size.depth_or_array_layers,
extent.depth_or_array_layers,
)?;
if texture_copy_view.origin.x % block_width != 0 {
return Err(TransferError::UnalignedCopyOriginX);
}
if texture_copy_view.origin.y % block_height != 0 {
return Err(TransferError::UnalignedCopyOriginY);
}
if copy_size.width % block_width != 0 {
return Err(TransferError::UnalignedCopyWidth);
}
if copy_size.height % block_height != 0 {
return Err(TransferError::UnalignedCopyHeight);
}
let (depth, array_layer_count) = match desc.dimension {
wgt::TextureDimension::D1 => (1, 1),
wgt::TextureDimension::D2 => (1, copy_size.depth_or_array_layers),
wgt::TextureDimension::D3 => (copy_size.depth_or_array_layers, 1),
};
let copy_extent = hal::CopyExtent {
width: copy_size.width,
height: copy_size.height,
depth,
};
Ok((copy_extent, array_layer_count))
}
fn handle_texture_init(
init_kind: MemoryInitKind,
cmd_buf_data: &mut CommandBufferMutable,
device: &Device,
copy_texture: &ImageCopyTexture,
copy_size: &Extent3d,
texture: &Arc<Texture>,
snatch_guard: &SnatchGuard<'_>,
) -> Result<(), ClearError> {
let init_action = TextureInitTrackerAction {
texture: texture.clone(),
range: TextureInitRange {
mip_range: copy_texture.mip_level..copy_texture.mip_level + 1,
layer_range: copy_texture.origin.z
..(copy_texture.origin.z + copy_size.depth_or_array_layers),
},
kind: init_kind,
};
// Register the init action.
let immediate_inits = cmd_buf_data
.texture_memory_actions
.register_init_action(&{ init_action });
// In rare cases we may need to insert an init operation immediately onto the command buffer.
if !immediate_inits.is_empty() {
let cmd_buf_raw = cmd_buf_data.encoder.open(device)?;
for init in immediate_inits {
clear_texture(
&init.texture,
TextureInitRange {
mip_range: init.mip_level..(init.mip_level + 1),
layer_range: init.layer..(init.layer + 1),
},
cmd_buf_raw,
&mut cmd_buf_data.trackers.textures,
&device.alignments,
device.zero_buffer.as_ref(),
snatch_guard,
)?;
}
}
Ok(())
}
/// Prepare a transfer's source texture.
///
/// Ensure the source texture of a transfer is in the right initialization
/// state, and record the state for after the transfer operation.
fn handle_src_texture_init(
cmd_buf_data: &mut CommandBufferMutable,
device: &Device,
source: &ImageCopyTexture,
copy_size: &Extent3d,
texture: &Arc<Texture>,
snatch_guard: &SnatchGuard<'_>,
) -> Result<(), TransferError> {
handle_texture_init(
MemoryInitKind::NeedsInitializedMemory,
cmd_buf_data,
device,
source,
copy_size,
texture,
snatch_guard,
)?;
Ok(())
}
/// Prepare a transfer's destination texture.
///
/// Ensure the destination texture of a transfer is in the right initialization
/// state, and record the state for after the transfer operation.
fn handle_dst_texture_init(
cmd_buf_data: &mut CommandBufferMutable,
device: &Device,
destination: &ImageCopyTexture,
copy_size: &Extent3d,
texture: &Arc<Texture>,
snatch_guard: &SnatchGuard<'_>,
) -> Result<(), TransferError> {
// Attention: If we don't write full texture subresources, we need to a full
// clear first since we don't track subrects. This means that in rare cases
// even a *destination* texture of a transfer may need an immediate texture
// init.
let dst_init_kind = if has_copy_partial_init_tracker_coverage(
copy_size,
destination.mip_level,
&texture.desc,
) {
MemoryInitKind::NeedsInitializedMemory
} else {
MemoryInitKind::ImplicitlyInitialized
};
handle_texture_init(
dst_init_kind,
cmd_buf_data,
device,
destination,
copy_size,
texture,
snatch_guard,
)?;
Ok(())
}
impl Global {
pub fn command_encoder_copy_buffer_to_buffer(
&self,
command_encoder_id: CommandEncoderId,
source: BufferId,
source_offset: BufferAddress,
destination: BufferId,
destination_offset: BufferAddress,
size: BufferAddress,
) -> Result<(), CopyError> {
profiling::scope!("CommandEncoder::copy_buffer_to_buffer");
api_log!(
"CommandEncoder::copy_buffer_to_buffer {source:?} -> {destination:?} {size:?}bytes"
);
if source == destination {
return Err(TransferError::SameSourceDestinationBuffer.into());
}
let hub = &self.hub;
let cmd_buf = hub
.command_buffers
.get(command_encoder_id.into_command_buffer_id());
let mut cmd_buf_data = cmd_buf.try_get()?;
cmd_buf_data.check_recording()?;
let device = &cmd_buf.device;
device.check_is_valid()?;
#[cfg(feature = "trace")]
if let Some(ref mut list) = cmd_buf_data.commands {
list.push(TraceCommand::CopyBufferToBuffer {
src: source,
src_offset: source_offset,
dst: destination,
dst_offset: destination_offset,
size,
});
}
let snatch_guard = device.snatchable_lock.read();
let src_buffer = hub.buffers.get(source).get()?;
src_buffer.same_device_as(cmd_buf.as_ref())?;
let src_pending = cmd_buf_data
.trackers
.buffers
.set_single(&src_buffer, hal::BufferUses::COPY_SRC);
let src_raw = src_buffer.try_raw(&snatch_guard)?;
src_buffer
.check_usage(BufferUsages::COPY_SRC)
.map_err(TransferError::MissingBufferUsage)?;
// expecting only a single barrier
let src_barrier = src_pending.map(|pending| pending.into_hal(&src_buffer, &snatch_guard));
let dst_buffer = hub.buffers.get(destination).get()?;
dst_buffer.same_device_as(cmd_buf.as_ref())?;
let dst_pending = cmd_buf_data
.trackers
.buffers
.set_single(&dst_buffer, hal::BufferUses::COPY_DST);
let dst_raw = dst_buffer.try_raw(&snatch_guard)?;
dst_buffer
.check_usage(BufferUsages::COPY_DST)
.map_err(TransferError::MissingBufferUsage)?;
let dst_barrier = dst_pending.map(|pending| pending.into_hal(&dst_buffer, &snatch_guard));
if size % wgt::COPY_BUFFER_ALIGNMENT != 0 {
return Err(TransferError::UnalignedCopySize(size).into());
}
if source_offset % wgt::COPY_BUFFER_ALIGNMENT != 0 {
return Err(TransferError::UnalignedBufferOffset(source_offset).into());
}
if destination_offset % wgt::COPY_BUFFER_ALIGNMENT != 0 {
return Err(TransferError::UnalignedBufferOffset(destination_offset).into());
}
if !device
.downlevel
.flags
.contains(wgt::DownlevelFlags::UNRESTRICTED_INDEX_BUFFER)
&& (src_buffer.usage.contains(BufferUsages::INDEX)
|| dst_buffer.usage.contains(BufferUsages::INDEX))
{
let forbidden_usages = BufferUsages::VERTEX
| BufferUsages::UNIFORM
| BufferUsages::INDIRECT
| BufferUsages::STORAGE;
if src_buffer.usage.intersects(forbidden_usages)
|| dst_buffer.usage.intersects(forbidden_usages)
{
return Err(TransferError::MissingDownlevelFlags(MissingDownlevelFlags(
wgt::DownlevelFlags::UNRESTRICTED_INDEX_BUFFER,
))
.into());
}
}
let source_end_offset = source_offset + size;
let destination_end_offset = destination_offset + size;
if source_end_offset > src_buffer.size {
return Err(TransferError::BufferOverrun {
start_offset: source_offset,
end_offset: source_end_offset,
buffer_size: src_buffer.size,
side: CopySide::Source,
}
.into());
}
if destination_end_offset > dst_buffer.size {
return Err(TransferError::BufferOverrun {
start_offset: destination_offset,
end_offset: destination_end_offset,
buffer_size: dst_buffer.size,
side: CopySide::Destination,
}
.into());
}
if size == 0 {
log::trace!("Ignoring copy_buffer_to_buffer of size 0");
return Ok(());
}
// Make sure source is initialized memory and mark dest as initialized.
cmd_buf_data.buffer_memory_init_actions.extend(
dst_buffer.initialization_status.read().create_action(
&dst_buffer,
destination_offset..(destination_offset + size),
MemoryInitKind::ImplicitlyInitialized,
),
);
cmd_buf_data.buffer_memory_init_actions.extend(
src_buffer.initialization_status.read().create_action(
&src_buffer,
source_offset..(source_offset + size),
MemoryInitKind::NeedsInitializedMemory,
),
);
let region = hal::BufferCopy {
src_offset: source_offset,
dst_offset: destination_offset,
size: wgt::BufferSize::new(size).unwrap(),
};
let cmd_buf_raw = cmd_buf_data.encoder.open(&cmd_buf.device)?;
let barriers = src_barrier
.into_iter()
.chain(dst_barrier)
.collect::<Vec<_>>();
unsafe {
cmd_buf_raw.transition_buffers(&barriers);
cmd_buf_raw.copy_buffer_to_buffer(src_raw, dst_raw, &[region]);
}
Ok(())
}
pub fn command_encoder_copy_buffer_to_texture(
&self,
command_encoder_id: CommandEncoderId,
source: &ImageCopyBuffer,
destination: &ImageCopyTexture,
copy_size: &Extent3d,
) -> Result<(), CopyError> {
profiling::scope!("CommandEncoder::copy_buffer_to_texture");
api_log!(
"CommandEncoder::copy_buffer_to_texture {:?} -> {:?} {copy_size:?}",
source.buffer,
destination.texture
);
let hub = &self.hub;
let cmd_buf = hub
.command_buffers
.get(command_encoder_id.into_command_buffer_id());
let mut cmd_buf_data = cmd_buf.try_get()?;
cmd_buf_data.check_recording()?;
let device = &cmd_buf.device;
device.check_is_valid()?;
#[cfg(feature = "trace")]
if let Some(ref mut list) = cmd_buf_data.commands {
list.push(TraceCommand::CopyBufferToTexture {
src: *source,
dst: *destination,
size: *copy_size,
});
}
if copy_size.width == 0 || copy_size.height == 0 || copy_size.depth_or_array_layers == 0 {
log::trace!("Ignoring copy_buffer_to_texture of size 0");
return Ok(());
}
let dst_texture = hub.textures.get(destination.texture).get()?;
dst_texture.same_device_as(cmd_buf.as_ref())?;
let (hal_copy_size, array_layer_count) = validate_texture_copy_range(
destination,
&dst_texture.desc,
CopySide::Destination,
copy_size,
)?;
let (dst_range, dst_base) = extract_texture_selector(destination, copy_size, &dst_texture)?;
let snatch_guard = device.snatchable_lock.read();
// Handle texture init *before* dealing with barrier transitions so we
// have an easier time inserting "immediate-inits" that may be required
// by prior discards in rare cases.
handle_dst_texture_init(
&mut cmd_buf_data,
device,
destination,
copy_size,
&dst_texture,
&snatch_guard,
)?;
let src_buffer = hub.buffers.get(source.buffer).get()?;
src_buffer.same_device_as(cmd_buf.as_ref())?;
let src_pending = cmd_buf_data
.trackers
.buffers
.set_single(&src_buffer, hal::BufferUses::COPY_SRC);
let src_raw = src_buffer.try_raw(&snatch_guard)?;
src_buffer
.check_usage(BufferUsages::COPY_SRC)
.map_err(TransferError::MissingBufferUsage)?;
let src_barrier = src_pending.map(|pending| pending.into_hal(&src_buffer, &snatch_guard));
let dst_pending = cmd_buf_data.trackers.textures.set_single(
&dst_texture,
dst_range,
hal::TextureUses::COPY_DST,
);
let dst_raw = dst_texture.try_raw(&snatch_guard)?;
dst_texture
.check_usage(TextureUsages::COPY_DST)
.map_err(TransferError::MissingTextureUsage)?;
let dst_barrier = dst_pending
.map(|pending| pending.into_hal(dst_raw))
.collect::<Vec<_>>();
if !dst_base.aspect.is_one() {
return Err(TransferError::CopyAspectNotOne.into());
}
if !conv::is_valid_copy_dst_texture_format(dst_texture.desc.format, destination.aspect) {
return Err(TransferError::CopyToForbiddenTextureFormat {
format: dst_texture.desc.format,
aspect: destination.aspect,
}
.into());
}
let (required_buffer_bytes_in_copy, bytes_per_array_layer) = validate_linear_texture_data(
&source.layout,
dst_texture.desc.format,
destination.aspect,
src_buffer.size,
CopySide::Source,
copy_size,
true,
)?;
if dst_texture.desc.format.is_depth_stencil_format() {
device
.require_downlevel_flags(wgt::DownlevelFlags::DEPTH_TEXTURE_AND_BUFFER_COPIES)
.map_err(TransferError::from)?;
}
cmd_buf_data.buffer_memory_init_actions.extend(
src_buffer.initialization_status.read().create_action(
&src_buffer,
source.layout.offset..(source.layout.offset + required_buffer_bytes_in_copy),
MemoryInitKind::NeedsInitializedMemory,
),
);
let regions = (0..array_layer_count)
.map(|rel_array_layer| {
let mut texture_base = dst_base.clone();
texture_base.array_layer += rel_array_layer;
let mut buffer_layout = source.layout;
buffer_layout.offset += rel_array_layer as u64 * bytes_per_array_layer;
hal::BufferTextureCopy {
buffer_layout,
texture_base,
size: hal_copy_size,
}
})
.collect::<Vec<_>>();
let cmd_buf_raw = cmd_buf_data.encoder.open(&cmd_buf.device)?;
unsafe {
cmd_buf_raw.transition_textures(&dst_barrier);
cmd_buf_raw.transition_buffers(src_barrier.as_slice());
cmd_buf_raw.copy_buffer_to_texture(src_raw, dst_raw, ®ions);
}
Ok(())
}
pub fn command_encoder_copy_texture_to_buffer(
&self,
command_encoder_id: CommandEncoderId,
source: &ImageCopyTexture,
destination: &ImageCopyBuffer,
copy_size: &Extent3d,
) -> Result<(), CopyError> {
profiling::scope!("CommandEncoder::copy_texture_to_buffer");
api_log!(
"CommandEncoder::copy_texture_to_buffer {:?} -> {:?} {copy_size:?}",
source.texture,
destination.buffer
);
let hub = &self.hub;
let cmd_buf = hub
.command_buffers
.get(command_encoder_id.into_command_buffer_id());
let mut cmd_buf_data = cmd_buf.try_get()?;
cmd_buf_data.check_recording()?;
let device = &cmd_buf.device;
device.check_is_valid()?;
#[cfg(feature = "trace")]
if let Some(ref mut list) = cmd_buf_data.commands {
list.push(TraceCommand::CopyTextureToBuffer {
src: *source,
dst: *destination,
size: *copy_size,
});
}
if copy_size.width == 0 || copy_size.height == 0 || copy_size.depth_or_array_layers == 0 {
log::trace!("Ignoring copy_texture_to_buffer of size 0");
return Ok(());
}
let src_texture = hub.textures.get(source.texture).get()?;
src_texture.same_device_as(cmd_buf.as_ref())?;
let (hal_copy_size, array_layer_count) =
validate_texture_copy_range(source, &src_texture.desc, CopySide::Source, copy_size)?;
let (src_range, src_base) = extract_texture_selector(source, copy_size, &src_texture)?;
let snatch_guard = device.snatchable_lock.read();
// Handle texture init *before* dealing with barrier transitions so we
// have an easier time inserting "immediate-inits" that may be required
// by prior discards in rare cases.
handle_src_texture_init(
&mut cmd_buf_data,
device,
source,
copy_size,
&src_texture,
&snatch_guard,
)?;
let src_pending = cmd_buf_data.trackers.textures.set_single(
&src_texture,
src_range,
hal::TextureUses::COPY_SRC,
);
let src_raw = src_texture.try_raw(&snatch_guard)?;
src_texture
.check_usage(TextureUsages::COPY_SRC)
.map_err(TransferError::MissingTextureUsage)?;
if src_texture.desc.sample_count != 1 {
return Err(TransferError::InvalidSampleCount {
sample_count: src_texture.desc.sample_count,
}
.into());
}
if source.mip_level >= src_texture.desc.mip_level_count {
return Err(TransferError::InvalidMipLevel {
requested: source.mip_level,
count: src_texture.desc.mip_level_count,
}
.into());
}
let src_barrier = src_pending
.map(|pending| pending.into_hal(src_raw))
.collect::<Vec<_>>();
let dst_buffer = hub.buffers.get(destination.buffer).get()?;
dst_buffer.same_device_as(cmd_buf.as_ref())?;
let dst_pending = cmd_buf_data
.trackers
.buffers
.set_single(&dst_buffer, hal::BufferUses::COPY_DST);
let dst_raw = dst_buffer.try_raw(&snatch_guard)?;
dst_buffer
.check_usage(BufferUsages::COPY_DST)
.map_err(TransferError::MissingBufferUsage)?;
let dst_barrier = dst_pending.map(|pending| pending.into_hal(&dst_buffer, &snatch_guard));
if !src_base.aspect.is_one() {
return Err(TransferError::CopyAspectNotOne.into());
}
if !conv::is_valid_copy_src_texture_format(src_texture.desc.format, source.aspect) {
return Err(TransferError::CopyFromForbiddenTextureFormat {
format: src_texture.desc.format,
aspect: source.aspect,
}
.into());
}
let (required_buffer_bytes_in_copy, bytes_per_array_layer) = validate_linear_texture_data(
&destination.layout,
src_texture.desc.format,
source.aspect,
dst_buffer.size,
CopySide::Destination,
copy_size,
true,
)?;
if src_texture.desc.format.is_depth_stencil_format() {
device
.require_downlevel_flags(wgt::DownlevelFlags::DEPTH_TEXTURE_AND_BUFFER_COPIES)
.map_err(TransferError::from)?;
}
cmd_buf_data.buffer_memory_init_actions.extend(
dst_buffer.initialization_status.read().create_action(
&dst_buffer,
destination.layout.offset
..(destination.layout.offset + required_buffer_bytes_in_copy),
MemoryInitKind::ImplicitlyInitialized,
),
);
let regions = (0..array_layer_count)
.map(|rel_array_layer| {
let mut texture_base = src_base.clone();
texture_base.array_layer += rel_array_layer;
let mut buffer_layout = destination.layout;
buffer_layout.offset += rel_array_layer as u64 * bytes_per_array_layer;
hal::BufferTextureCopy {
buffer_layout,
texture_base,
size: hal_copy_size,
}
})
.collect::<Vec<_>>();
let cmd_buf_raw = cmd_buf_data.encoder.open(&cmd_buf.device)?;
unsafe {
cmd_buf_raw.transition_buffers(dst_barrier.as_slice());
cmd_buf_raw.transition_textures(&src_barrier);
cmd_buf_raw.copy_texture_to_buffer(
src_raw,
hal::TextureUses::COPY_SRC,
dst_raw,
®ions,
);
}
Ok(())
}
pub fn command_encoder_copy_texture_to_texture(
&self,
command_encoder_id: CommandEncoderId,
source: &ImageCopyTexture,
destination: &ImageCopyTexture,
copy_size: &Extent3d,
) -> Result<(), CopyError> {
profiling::scope!("CommandEncoder::copy_texture_to_texture");
api_log!(
"CommandEncoder::copy_texture_to_texture {:?} -> {:?} {copy_size:?}",
source.texture,
destination.texture
);
let hub = &self.hub;
let cmd_buf = hub
.command_buffers
.get(command_encoder_id.into_command_buffer_id());
let mut cmd_buf_data = cmd_buf.try_get()?;
cmd_buf_data.check_recording()?;
let device = &cmd_buf.device;
device.check_is_valid()?;
let snatch_guard = device.snatchable_lock.read();
#[cfg(feature = "trace")]
if let Some(ref mut list) = cmd_buf_data.commands {
list.push(TraceCommand::CopyTextureToTexture {
src: *source,
dst: *destination,
size: *copy_size,
});
}
if copy_size.width == 0 || copy_size.height == 0 || copy_size.depth_or_array_layers == 0 {
log::trace!("Ignoring copy_texture_to_texture of size 0");
return Ok(());
}
let src_texture = hub.textures.get(source.texture).get()?;
let dst_texture = hub.textures.get(destination.texture).get()?;
src_texture.same_device_as(cmd_buf.as_ref())?;
dst_texture.same_device_as(cmd_buf.as_ref())?;
// src and dst texture format must be copy-compatible
if src_texture.desc.format.remove_srgb_suffix()
!= dst_texture.desc.format.remove_srgb_suffix()
{
return Err(TransferError::TextureFormatsNotCopyCompatible {
src_format: src_texture.desc.format,
dst_format: dst_texture.desc.format,
}
.into());
}
let (src_copy_size, array_layer_count) =
validate_texture_copy_range(source, &src_texture.desc, CopySide::Source, copy_size)?;
let (dst_copy_size, _) = validate_texture_copy_range(
destination,
&dst_texture.desc,
CopySide::Destination,
copy_size,
)?;
let (src_range, src_tex_base) = extract_texture_selector(source, copy_size, &src_texture)?;
let (dst_range, dst_tex_base) =
extract_texture_selector(destination, copy_size, &dst_texture)?;
let src_texture_aspects = hal::FormatAspects::from(src_texture.desc.format);
let dst_texture_aspects = hal::FormatAspects::from(dst_texture.desc.format);
if src_tex_base.aspect != src_texture_aspects {
return Err(TransferError::CopySrcMissingAspects.into());
}
if dst_tex_base.aspect != dst_texture_aspects {
return Err(TransferError::CopyDstMissingAspects.into());
}
// Handle texture init *before* dealing with barrier transitions so we
// have an easier time inserting "immediate-inits" that may be required
// by prior discards in rare cases.
handle_src_texture_init(
&mut cmd_buf_data,
device,
source,
copy_size,
&src_texture,
&snatch_guard,
)?;
handle_dst_texture_init(
&mut cmd_buf_data,
device,
destination,
copy_size,
&dst_texture,
&snatch_guard,
)?;
let src_pending = cmd_buf_data.trackers.textures.set_single(
&src_texture,
src_range,
hal::TextureUses::COPY_SRC,
);
let src_raw = src_texture.try_raw(&snatch_guard)?;
src_texture
.check_usage(TextureUsages::COPY_SRC)
.map_err(TransferError::MissingTextureUsage)?;
//TODO: try to avoid this the collection. It's needed because both
// `src_pending` and `dst_pending` try to hold `trackers.textures` mutably.
let mut barriers: ArrayVec<_, 2> = src_pending
.map(|pending| pending.into_hal(src_raw))
.collect();
let dst_pending = cmd_buf_data.trackers.textures.set_single(
&dst_texture,
dst_range,
hal::TextureUses::COPY_DST,
);
let dst_raw = dst_texture.try_raw(&snatch_guard)?;
dst_texture
.check_usage(TextureUsages::COPY_DST)
.map_err(TransferError::MissingTextureUsage)?;
barriers.extend(dst_pending.map(|pending| pending.into_hal(dst_raw)));
let hal_copy_size = hal::CopyExtent {
width: src_copy_size.width.min(dst_copy_size.width),
height: src_copy_size.height.min(dst_copy_size.height),
depth: src_copy_size.depth.min(dst_copy_size.depth),
};
let regions = (0..array_layer_count)
.map(|rel_array_layer| {
let mut src_base = src_tex_base.clone();
let mut dst_base = dst_tex_base.clone();
src_base.array_layer += rel_array_layer;
dst_base.array_layer += rel_array_layer;
hal::TextureCopy {
src_base,
dst_base,
size: hal_copy_size,
}
})
.collect::<Vec<_>>();
let cmd_buf_raw = cmd_buf_data.encoder.open(&cmd_buf.device)?;
unsafe {
cmd_buf_raw.transition_textures(&barriers);
cmd_buf_raw.copy_texture_to_texture(
src_raw,
hal::TextureUses::COPY_SRC,
dst_raw,
®ions,
);
}
Ok(())
}
}