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Quelle render.rs
Sprache: unbekannt
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use crate::binding_model::BindGroup;
use crate::command::{
validate_and_begin_occlusion_query, validate_and_begin_pipeline_statistics_query,
};
use crate::init_tracker::BufferInitTrackerAction;
use crate::pipeline::RenderPipeline;
use crate::resource::InvalidResourceError;
use crate::snatch::SnatchGuard;
use crate::{
api_log,
binding_model::BindError,
command::{
bind::Binder,
end_occlusion_query, end_pipeline_statistics_query,
memory_init::{fixup_discarded_surfaces, SurfacesInDiscardState},
ArcPassTimestampWrites, BasePass, BindGroupStateChange, CommandBuffer, CommandEncode rError,
DrawError, ExecutionError, MapPassErr, PassErrorScope, PassTimestampWrites, QueryUseError,
RenderCommandError, StateChange,
},
device::{
AttachmentData, Device, DeviceError, MissingDownlevelFlags, MissingFeatures,
RenderPassCompatibilityError, RenderPassContext,
},
global::Global,
hal_label, id,
init_tracker::{MemoryInitKind, TextureInitRange, TextureInitTrackerAction},
pipeline::{self, PipelineFlags},
resource::{
DestroyedResourceError, Labeled, MissingBufferUsageError, MissingTextureUsageError,
ParentDevice, QuerySet, Texture, TextureView, TextureViewNotRenderableReason,
},
track::{ResourceUsageCompatibilityError, TextureSelector, Tracker, UsageScope},
Label,
};
use arrayvec::ArrayVec;
use thiserror::Error;
use wgt::{
BufferAddress, BufferSize, BufferUsages, Color, DynamicOffset, IndexFormat, ShaderStages,
TextureUsages, TextureViewDimension, VertexStepMode,
};
#[cfg(feature = "serde")]
use serde::Deserialize;
#[cfg(feature = "serde")]
use serde::Serialize;
use std::{borrow::Cow, fmt, iter, mem::size_of, num::NonZeroU32, ops::Range, str, sync::Arc};
use super::render_command::ArcRenderCommand;
use super::{
memory_init::TextureSurfaceDiscard, CommandBufferTextureMemoryActions, CommandEncoder,
QueryResetMap,
};
use super::{DrawKind, Rect};
pub use wgt::{LoadOp, StoreOp};
fn load_hal_ops<V>(load: LoadOp<V>) -> hal::AttachmentOps {
match load {
LoadOp::Load => hal::AttachmentOps::LOAD,
LoadOp::Clear(_) => hal::AttachmentOps::empty(),
}
}
fn store_hal_ops(store: StoreOp) -> hal::AttachmentOps {
match store {
StoreOp::Store => hal::AttachmentOps::STORE,
StoreOp::Discard => hal::AttachmentOps::empty(),
}
}
/// Describes an individual channel within a render pass, such as color, depth, or stencil.
#[repr(C)]
#[derive(Clone, Debug, Eq, PartialEq)]
#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
pub struct PassChannel<V> {
/// Operation to perform to the output attachment at the start of a
/// renderpass.
///
/// This must be clear if it is the first renderpass rendering to a swap
/// chain image.
pub load_op: Option<LoadOp<V>>,
/// Operation to perform to the output attachment at the end of a renderpass.
pub store_op: Option<StoreOp>,
/// If true, the relevant channel is not changed by a renderpass, and the
/// corresponding attachment can be used inside the pass by other read-only
/// usages.
pub read_only: bool,
}
impl<V: Copy + Default> PassChannel<Option<V>> {
fn resolve(
&self,
handle_clear: impl Fn(Option<V>) -> Result<V, AttachmentError>,
) -> Result<ResolvedPassChannel<V>, AttachmentError> {
if self.read_only {
if self.load_op.is_some() {
return Err(AttachmentError::ReadOnlyWithLoad);
}
if self.store_op.is_some() {
return Err(AttachmentError::ReadOnlyWithStore);
}
Ok(ResolvedPassChannel::ReadOnly)
} else {
Ok(ResolvedPassChannel::Operational(wgt::Operations {
load: match self.load_op.ok_or(AttachmentError::NoLoad)? {
LoadOp::Clear(clear_value) => LoadOp::Clear(handle_clear(clear_value)?),
LoadOp::Load => LoadOp::Load,
},
store: self.store_op.ok_or(AttachmentError::NoStore)?,
}))
}
}
}
#[derive(Debug)]
pub enum ResolvedPassChannel<V> {
ReadOnly,
Operational(wgt::Operations<V>),
}
impl<V: Copy + Default> ResolvedPassChannel<V> {
fn load_op(&self) -> LoadOp<V> {
match self {
ResolvedPassChannel::ReadOnly => LoadOp::Load,
ResolvedPassChannel::Operational(wgt::Operations { load, .. }) => *load,
}
}
fn store_op(&self) -> StoreOp {
match self {
ResolvedPassChannel::ReadOnly => StoreOp::Store,
ResolvedPassChannel::Operational(wgt::Operations { store, .. }) => *store,
}
}
fn clear_value(&self) -> V {
match self {
Self::Operational(wgt::Operations {
load: LoadOp::Clear(clear_value),
..
}) => *clear_value,
_ => Default::default(),
}
}
fn is_readonly(&self) -> bool {
matches!(self, Self::ReadOnly)
}
fn hal_ops(&self) -> hal::AttachmentOps {
load_hal_ops(self.load_op()) | store_hal_ops(self.store_op())
}
}
/// Describes a color attachment to a render pass.
#[repr(C)]
#[derive(Clone, Debug, PartialEq)]
#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
pub struct RenderPassColorAttachment {
/// The view to use as an attachment.
pub view: id::TextureViewId,
/// The view that will receive the resolved output if multisampling is used.
pub resolve_target: Option<id::TextureViewId>,
/// Operation to perform to the output attachment at the start of a
/// renderpass.
///
/// This must be clear if it is the first renderpass rendering to a swap
/// chain image.
pub load_op: LoadOp<Color>,
/// Operation to perform to the output attachment at the end of a renderpass.
pub store_op: StoreOp,
}
/// Describes a color attachment to a render pass.
#[derive(Debug)]
struct ArcRenderPassColorAttachment {
/// The view to use as an attachment.
pub view: Arc<TextureView>,
/// The view that will receive the resolved output if multisampling is used.
pub resolve_target: Option<Arc<TextureView>>,
/// Operation to perform to the output attachment at the start of a
/// renderpass.
///
/// This must be clear if it is the first renderpass rendering to a swap
/// chain image.
pub load_op: LoadOp<Color>,
/// Operation to perform to the output attachment at the end of a renderpass.
pub store_op: StoreOp,
}
impl ArcRenderPassColorAttachment {
fn hal_ops(&self) -> hal::AttachmentOps {
load_hal_ops(self.load_op) | store_hal_ops(self.store_op)
}
fn clear_value(&self) -> Color {
match self.load_op {
LoadOp::Clear(clear_value) => clear_value,
LoadOp::Load => Color::default(),
}
}
}
/// Describes a depth/stencil attachment to a render pass.
#[repr(C)]
#[derive(Clone, Debug, PartialEq)]
#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
pub struct RenderPassDepthStencilAttachment {
/// The view to use as an attachment.
pub view: id::TextureViewId,
/// What operations will be performed on the depth part of the attachment.
pub depth: PassChannel<Option<f32>>,
/// What operations will be performed on the stencil part of the attachment.
pub stencil: PassChannel<Option<u32>>,
}
/// Describes a depth/stencil attachment to a render pass.
#[derive(Debug)]
pub struct ArcRenderPassDepthStencilAttachment {
/// The view to use as an attachment.
pub view: Arc<TextureView>,
/// What operations will be performed on the depth part of the attachment.
pub depth: ResolvedPassChannel<f32>,
/// What operations will be performed on the stencil part of the attachment.
pub stencil: ResolvedPassChannel<u32>,
}
/// Describes the attachments of a render pass.
#[derive(Clone, Debug, Default, PartialEq)]
pub struct RenderPassDescriptor<'a> {
pub label: Label<'a>,
/// The color attachments of the render pass.
pub color_attachments: Cow<'a, [Option<RenderPassColorAttachment>]>,
/// The depth and stencil attachment of the render pass, if any.
pub depth_stencil_attachment: Option<&'a RenderPassDepthStencilAttachment>,
/// Defines where and when timestamp values will be written for this pass.
pub timestamp_writes: Option<&'a PassTimestampWrites>,
/// Defines where the occlusion query results will be stored for this pass.
pub occlusion_query_set: Option<id::QuerySetId>,
}
/// Describes the attachments of a render pass.
struct ArcRenderPassDescriptor<'a> {
pub label: &'a Label<'a>,
/// The color attachments of the render pass.
pub color_attachments:
ArrayVec<Option<ArcRenderPassColorAttachment>, { hal::MAX_COLOR_ATTACHMENTS }>,
/// The depth and stencil attachment of the render pass, if any.
pub depth_stencil_attachment: Option<ArcRenderPassDepthStencilAttachment>,
/// Defines where and when timestamp values will be written for this pass.
pub timestamp_writes: Option<ArcPassTimestampWrites>,
/// Defines where the occlusion query results will be stored for this pass.
pub occlusion_query_set: Option<Arc<QuerySet>>,
}
pub struct RenderPass {
/// All pass data & records is stored here.
///
/// If this is `None`, the pass is in the 'ended' state and can no longer be used.
/// Any attempt to record more commands will result in a validation error.
base: Option<BasePass<ArcRenderCommand>>,
/// Parent command buffer that this pass records commands into.
///
/// If it is none, this pass is invalid and any operation on it will return an error.
parent: Option<Arc<CommandBuffer>>,
color_attachments:
ArrayVec<Option<ArcRenderPassColorAttachment>, { hal::MAX_COLOR_ATTACHMENTS }>,
depth_stencil_attachment: Option<ArcRenderPassDepthStencilAttachment>,
timestamp_writes: Option<ArcPassTimestampWrites>,
occlusion_query_set: Option<Arc<QuerySet>>,
// Resource binding dedupe state.
current_bind_groups: BindGroupStateChange,
current_pipeline: StateChange<id::RenderPipelineId>,
}
impl RenderPass {
/// If the parent command buffer is invalid, the returned pass will be invalid.
fn new(parent: Option<Arc<CommandBuffer>>, desc: ArcRenderPassDescriptor) -> Self {
let ArcRenderPassDescriptor {
label,
timestamp_writes,
color_attachments,
depth_stencil_attachment,
occlusion_query_set,
} = desc;
Self {
base: Some(BasePass::new(label)),
parent,
color_attachments,
depth_stencil_attachment,
timestamp_writes,
occlusion_query_set,
current_bind_groups: BindGroupStateChange::new(),
current_pipeline: StateChange::new(),
}
}
#[inline]
pub fn label(&self) -> Option<&str> {
self.base.as_ref().and_then(|base| base.label.as_deref())
}
fn base_mut<'a>(
&'a mut self,
scope: PassErrorScope,
) -> Result<&'a mut BasePass<ArcRenderCommand>, RenderPassError> {
self.base
.as_mut()
.ok_or(RenderPassErrorInner::PassEnded)
.map_pass_err(scope)
}
}
impl fmt::Debug for RenderPass {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
f.debug_struct("RenderPass")
.field("label", &self.label())
.field("color_attachments", &self.color_attachments)
.field("depth_stencil_target", &self.depth_stencil_attachment)
.field(
"command count",
&self.base.as_ref().map_or(0, |base| base.commands.len()),
)
.field(
"dynamic offset count",
&self
.base
.as_ref()
.map_or(0, |base| base.dynamic_offsets.len()),
)
.field(
"push constant u32 count",
&self
.base
.as_ref()
.map_or(0, |base| base.push_constant_data.len()),
)
.finish()
}
}
#[derive(Debug, PartialEq)]
enum OptionalState {
Unused,
Required,
Set,
}
impl OptionalState {
fn require(&mut self, require: bool) {
if require && *self == Self::Unused {
*self = Self::Required;
}
}
}
#[derive(Debug, Default)]
struct IndexState {
buffer_format: Option<IndexFormat>,
limit: u64,
}
impl IndexState {
fn update_buffer(&mut self, range: Range<BufferAddress>, format: IndexFormat) {
self.buffer_format = Some(format);
let shift = match format {
IndexFormat::Uint16 => 1,
IndexFormat::Uint32 => 2,
};
self.limit = (range.end - range.start) >> shift;
}
fn reset(&mut self) {
self.buffer_format = None;
self.limit = 0;
}
}
#[derive(Clone, Copy, Debug)]
struct VertexBufferState {
total_size: BufferAddress,
step: pipeline::VertexStep,
bound: bool,
}
impl VertexBufferState {
const EMPTY: Self = Self {
total_size: 0,
step: pipeline::VertexStep {
stride: 0,
last_stride: 0,
mode: VertexStepMode::Vertex,
},
bound: false,
};
}
#[derive(Debug, Default)]
struct VertexState {
inputs: ArrayVec<VertexBufferState, { hal::MAX_VERTEX_BUFFERS }>,
/// Length of the shortest vertex rate vertex buffer
vertex_limit: u64,
/// Buffer slot which the shortest vertex rate vertex buffer is bound to
vertex_limit_slot: u32,
/// Length of the shortest instance rate vertex buffer
instance_limit: u64,
/// Buffer slot which the shortest instance rate vertex buffer is bound to
instance_limit_slot: u32,
}
impl VertexState {
fn update_limits(&mut self) {
// Implements the validation from https://gpuweb.github.io/gpuweb/#dom-gpurendercommandsmixin-draw
// Except that the formula is shuffled to extract the number of vertices in order
// to carry the bulk of the computation when changing states instead of when producing
// draws. Draw calls tend to happen at a higher frequency. Here we determine vertex
// limits that can be cheaply checked for each draw call.
self.vertex_limit = u32::MAX as u64;
self.instance_limit = u32::MAX as u64;
for (idx, vbs) in self.inputs.iter().enumerate() {
if !vbs.bound {
continue;
}
let limit = if vbs.total_size < vbs.step.last_stride {
// The buffer cannot fit the last vertex.
0
} else {
if vbs.step.stride == 0 {
// We already checked that the last stride fits, the same
// vertex will be repeated so this slot can accommodate any number of
// vertices.
continue;
}
// The general case.
(vbs.total_size - vbs.step.last_stride) / vbs.step.stride + 1
};
match vbs.step.mode {
VertexStepMode::Vertex => {
if limit < self.vertex_limit {
self.vertex_limit = limit;
self.vertex_limit_slot = idx as _;
}
}
VertexStepMode::Instance => {
if limit < self.instance_limit {
self.instance_limit = limit;
self.instance_limit_slot = idx as _;
}
}
}
}
}
fn reset(&mut self) {
self.inputs.clear();
self.vertex_limit = 0;
self.instance_limit = 0;
}
}
struct State<'scope, 'snatch_guard, 'cmd_buf, 'raw_encoder> {
pipeline_flags: PipelineFlags,
binder: Binder,
blend_constant: OptionalState,
stencil_reference: u32,
pipeline: Option<Arc<RenderPipeline>>,
index: IndexState,
vertex: VertexState,
debug_scope_depth: u32,
info: RenderPassInfo<'scope>,
snatch_guard: &'snatch_guard SnatchGuard<'snatch_guard>,
device: &'cmd_buf Arc<Device>,
raw_encoder: &'raw_encoder mut dyn hal::DynCommandEncoder,
tracker: &'cmd_buf mut Tracker,
buffer_memory_init_actions: &'cmd_buf mut Vec<BufferInitTrackerAction>,
texture_memory_actions: &'cmd_buf mut CommandBufferTextureMemoryActions,
temp_offsets: Vec<u32>,
dynamic_offset_count: usize,
string_offset: usize,
active_occlusion_query: Option<(Arc<QuerySet>, u32)>,
active_pipeline_statistics_query: Option<(Arc<QuerySet>, u32)>,
}
impl<'scope, 'snatch_guard, 'cmd_buf, 'raw_encoder>
State<'scope, 'snatch_guard, 'cmd_buf, 'raw_encoder>
{
fn is_ready(&self, indexed: bool) -> Result<(), DrawError> {
if let Some(pipeline) = self.pipeline.as_ref() {
self.binder.check_compatibility(pipeline.as_ref())?;
self.binder.check_late_buffer_bindings()?;
if self.blend_constant == OptionalState::Required {
return Err(DrawError::MissingBlendConstant);
}
// Determine how many vertex buffers have already been bound
let vertex_buffer_count =
self.vertex.inputs.iter().take_while(|v| v.bound).count() as u32;
// Compare with the needed quantity
if vertex_buffer_count < pipeline.vertex_steps.len() as u32 {
return Err(DrawError::MissingVertexBuffer {
pipeline: pipeline.error_ident(),
index: vertex_buffer_count,
});
}
if indexed {
// Pipeline expects an index buffer
if let Some(pipeline_index_format) = pipeline.strip_index_format {
// We have a buffer bound
let buffer_index_format = self
.index
.buffer_format
.ok_or(DrawError::MissingIndexBuffer)?;
// The buffers are different formats
if pipeline_index_format != buffer_index_format {
return Err(DrawError::UnmatchedIndexFormats {
pipeline: pipeline.error_ident(),
pipeline_format: pipeline_index_format,
buffer_format: buffer_index_format,
});
}
}
}
Ok(())
} else {
Err(DrawError::MissingPipeline)
}
}
/// Reset the `RenderBundle`-related states.
fn reset_bundle(&mut self) {
self.binder.reset();
self.pipeline = None;
self.index.reset();
self.vertex.reset();
}
}
/// Describes an attachment location in words.
///
/// Can be used as "the {loc} has..." or "{loc} has..."
#[derive(Debug, Copy, Clone)]
pub enum AttachmentErrorLocation {
Color { index: usize, resolve: bool },
Depth,
}
impl fmt::Display for AttachmentErrorLocation {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
match *self {
AttachmentErrorLocation::Color {
index,
resolve: false,
} => write!(f, "color attachment at index {index}'s texture view"),
AttachmentErrorLocation::Color {
index,
resolve: true,
} => write!(
f,
"color attachment at index {index}'s resolve texture view"
),
AttachmentErrorLocation::Depth => write!(f, "depth attachment's texture view"),
}
}
}
#[derive(Clone, Debug, Error)]
#[non_exhaustive]
pub enum ColorAttachmentError {
#[error("Attachment format {0:?} is not a color format")]
InvalidFormat(wgt::TextureFormat),
#[error("The number of color attachments {given} exceeds the limit {limit}")]
TooMany { given: usize, limit: usize },
#[error("The total number of bytes per sample in color attachments {total} exceeds the limit {limit}")]
TooManyBytesPerSample { total: u32, limit: u32 },
}
#[derive(Clone, Debug, Error)]
#[non_exhaustive]
pub enum AttachmentError {
#[error("The format of the depth-stencil attachment ({0:?}) is not a depth-or-stencil format")]
InvalidDepthStencilAttachmentFormat(wgt::TextureFormat),
#[error("Read-only attachment with load")]
ReadOnlyWithLoad,
#[error("Read-only attachment with store")]
ReadOnlyWithStore,
#[error("Attachment without load")]
NoLoad,
#[error("Attachment without store")]
NoStore,
#[error("LoadOp is `Clear` but no clear value was provided")]
NoClearValue,
#[error("Clear value ({0}) must be between 0.0 and 1.0, inclusive")]
ClearValueOutOfRange(f32),
}
/// Error encountered when performing a render pass.
#[derive(Clone, Debug, Error)]
pub enum RenderPassErrorInner {
#[error(transparent)]
Device(DeviceError),
#[error(transparent)]
ColorAttachment(#[from] ColorAttachmentError),
#[error(transparent)]
Encoder(#[from] CommandEncoderError),
#[error("Parent encoder is invalid")]
InvalidParentEncoder,
#[error("The format of the {location} ({format:?}) is not resolvable")]
UnsupportedResolveTargetFormat {
location: AttachmentErrorLocation,
format: wgt::TextureFormat,
},
#[error("No color attachments or depth attachments were provided, at least one attachment of any kind must be provided")]
MissingAttachments,
#[error("The {location} is not renderable:")]
TextureViewIsNotRenderable {
location: AttachmentErrorLocation,
#[source]
reason: TextureViewNotRenderableReason,
},
#[error("Attachments have differing sizes: the {expected_location} has extent {expected_extent:?} but is followed by the {actual_location} which has {actual_extent:?}")]
AttachmentsDimensionMismatch {
expected_location: AttachmentErrorLocation,
expected_extent: wgt::Extent3d,
actual_location: AttachmentErrorLocation,
actual_extent: wgt::Extent3d,
},
#[error("Attachments have differing sample counts: the {expected_location} has count {expected_samples:?} but is followed by the {actual_location} which has count {actual_samples:?}")]
AttachmentSampleCountMismatch {
expected_location: AttachmentErrorLocation,
expected_samples: u32,
actual_location: AttachmentErrorLocation,
actual_samples: u32,
},
#[error("The resolve source, {location}, must be multi-sampled (has {src} samples) while the resolve destination must not be multisampled (has {dst} samples)")]
InvalidResolveSampleCounts {
location: AttachmentErrorLocation,
src: u32,
dst: u32,
},
#[error(
"Resource source, {location}, format ({src:?}) must match the resolve destination format ({dst:?})"
)]
MismatchedResolveTextureFormat {
location: AttachmentErrorLocation,
src: wgt::TextureFormat,
dst: wgt::TextureFormat,
},
#[error("Unable to clear non-present/read-only depth")]
InvalidDepthOps,
#[error("Unable to clear non-present/read-only stencil")]
InvalidStencilOps,
#[error("Setting `values_offset` to be `None` is only for internal use in render bundles")]
InvalidValuesOffset,
#[error(transparent)]
MissingFeatures(#[from] MissingFeatures),
#[error(transparent)]
MissingDownlevelFlags(#[from] MissingDownlevelFlags),
#[error("Indirect buffer offset {0:?} is not a multiple of 4")]
UnalignedIndirectBufferOffset(BufferAddress),
#[error("Indirect draw uses bytes {offset}..{end_offset} using count {count} which overruns indirect buffer of size {buffer_size}")]
IndirectBufferOverrun {
count: u32,
offset: u64,
end_offset: u64,
buffer_size: u64,
},
#[error("Indirect draw uses bytes {begin_count_offset}..{end_count_offset} which overruns indirect buffer of size {count_buffer_size}")]
IndirectCountBufferOverrun {
begin_count_offset: u64,
end_count_offset: u64,
count_buffer_size: u64,
},
#[error("Cannot pop debug group, because number of pushed debug groups is zero")]
InvalidPopDebugGroup,
#[error(transparent)]
ResourceUsageCompatibility(#[from] ResourceUsageCompatibilityError),
#[error("Render bundle has incompatible targets, {0}")]
IncompatibleBundleTargets(#[from] RenderPassCompatibilityError),
#[error(
"Render bundle has incompatible read-only flags: \
bundle has flags depth = {bundle_depth} and stencil = {bundle_stencil}, \
while the pass has flags depth = {pass_depth} and stencil = {pass_stencil}. \
Read-only renderpasses are only compatible with read-only bundles for that aspect."
)]
IncompatibleBundleReadOnlyDepthStencil {
pass_depth: bool,
pass_stencil: bool,
bundle_depth: bool,
bundle_stencil: bool,
},
#[error(transparent)]
RenderCommand(#[from] RenderCommandError),
#[error(transparent)]
Draw(#[from] DrawError),
#[error(transparent)]
Bind(#[from] BindError),
#[error("Push constant offset must be aligned to 4 bytes")]
PushConstantOffsetAlignment,
#[error("Push constant size must be aligned to 4 bytes")]
PushConstantSizeAlignment,
#[error("Ran out of push constant space. Don't set 4gb of push constants per ComputePass.")]
PushConstantOutOfMemory,
#[error(transparent)]
QueryUse(#[from] QueryUseError),
#[error("Multiview layer count must match")]
MultiViewMismatch,
#[error(
"Multiview pass texture views with more than one array layer must have D2Array dimension"
)]
MultiViewDimensionMismatch,
#[error("missing occlusion query set")]
MissingOcclusionQuerySet,
#[error(transparent)]
DestroyedResource(#[from] DestroyedResourceError),
#[error("The compute pass has already been ended and no further commands can be recorded")]
PassEnded,
#[error(transparent)]
InvalidResource(#[from] InvalidResourceError),
}
impl From<MissingBufferUsageError> for RenderPassErrorInner {
fn from(error: MissingBufferUsageError) -> Self {
Self::RenderCommand(error.into())
}
}
impl From<MissingTextureUsageError> for RenderPassErrorInner {
fn from(error: MissingTextureUsageError) -> Self {
Self::RenderCommand(error.into())
}
}
impl From<DeviceError> for RenderPassErrorInner {
fn from(error: DeviceError) -> Self {
Self::Device(error)
}
}
/// Error encountered when performing a render pass.
#[derive(Clone, Debug, Error)]
#[error("{scope}")]
pub struct RenderPassError {
pub scope: PassErrorScope,
#[source]
pub(super) inner: RenderPassErrorInner,
}
impl<T, E> MapPassErr<T, RenderPassError> for Result<T, E>
where
E: Into<RenderPassErrorInner>,
{
fn map_pass_err(self, scope: PassErrorScope) -> Result<T, RenderPassError> {
self.map_err(|inner| RenderPassError {
scope,
inner: inner.into(),
})
}
}
struct RenderAttachment {
texture: Arc<Texture>,
selector: TextureSelector,
usage: hal::TextureUses,
}
impl TextureView {
fn to_render_attachment(&self, usage: hal::TextureUses) -> RenderAttachment {
RenderAttachment {
texture: self.parent.clone(),
selector: self.selector.clone(),
usage,
}
}
}
const MAX_TOTAL_ATTACHMENTS: usize = hal::MAX_COLOR_ATTACHMENTS + hal::MAX_COLOR_ATTACHMENTS + 1;
type AttachmentDataVec<T> = ArrayVec<T, MAX_TOTAL_ATTACHMENTS>;
struct RenderPassInfo<'d> {
context: RenderPassContext,
usage_scope: UsageScope<'d>,
/// All render attachments, including depth/stencil
render_attachments: AttachmentDataVec<RenderAttachment>,
is_depth_read_only: bool,
is_stencil_read_only: bool,
extent: wgt::Extent3d,
pending_discard_init_fixups: SurfacesInDiscardState,
divergent_discarded_depth_stencil_aspect: Option<(wgt::TextureAspect, Arc<TextureView>)>,
multiview: Option<NonZeroU32>,
}
impl<'d> RenderPassInfo<'d> {
fn add_pass_texture_init_actions<V>(
load_op: LoadOp<V>,
store_op: StoreOp,
texture_memory_actions: &mut CommandBufferTextureMemoryActions,
view: &TextureView,
pending_discard_init_fixups: &mut SurfacesInDiscardState,
) {
if matches!(load_op, LoadOp::Load) {
pending_discard_init_fixups.extend(texture_memory_actions.register_init_action(
&TextureInitTrackerAction {
texture: view.parent.clone(),
range: TextureInitRange::from(view.selector.clone()),
// Note that this is needed even if the target is discarded,
kind: MemoryInitKind::NeedsInitializedMemory,
},
));
} else if store_op == StoreOp::Store {
// Clear + Store
texture_memory_actions.register_implicit_init(
&view.parent,
TextureInitRange::from(view.selector.clone()),
);
}
if store_op == StoreOp::Discard {
// the discard happens at the *end* of a pass, but recording the
// discard right away be alright since the texture can't be used
// during the pass anyways
texture_memory_actions.discard(TextureSurfaceDiscard {
texture: view.parent.clone(),
mip_level: view.selector.mips.start,
layer: view.selector.layers.start,
});
}
}
fn start(
device: &'d Arc<Device>,
hal_label: Option<&str>,
color_attachments: ArrayVec<
Option<ArcRenderPassColorAttachment>,
{ hal::MAX_COLOR_ATTACHMENTS },
>,
mut depth_stencil_attachment: Option<ArcRenderPassDepthStencilAttachment>,
mut timestamp_writes: Option<ArcPassTimestampWrites>,
mut occlusion_query_set: Option<Arc<QuerySet>>,
encoder: &mut CommandEncoder,
trackers: &mut Tracker,
texture_memory_actions: &mut CommandBufferTextureMemoryActions,
pending_query_resets: &mut QueryResetMap,
snatch_guard: &SnatchGuard<'_>,
) -> Result<Self, RenderPassErrorInner> {
profiling::scope!("RenderPassInfo::start");
// We default to false intentionally, even if depth-stencil isn't used at all.
// This allows us to use the primary raw pipeline in `RenderPipeline`,
// instead of the special read-only one, which would be `None`.
let mut is_depth_read_only = false;
let mut is_stencil_read_only = false;
let mut render_attachments = AttachmentDataVec::<RenderAttachment>::new();
let mut discarded_surfaces = AttachmentDataVec::new();
let mut pending_discard_init_fixups = SurfacesInDiscardState::new();
let mut divergent_discarded_depth_stencil_aspect = None;
let mut attachment_location = AttachmentErrorLocation::Color {
index: usize::MAX,
resolve: false,
};
let mut extent = None;
let mut sample_count = 0;
let mut detected_multiview: Option<Option<NonZeroU32>> = None;
let mut check_multiview = |view: &TextureView| {
// Get the multiview configuration for this texture view
let layers = view.selector.layers.end - view.selector.layers.start;
let this_multiview = if layers >= 2 {
// Trivially proven by the if above
Some(unsafe { NonZeroU32::new_unchecked(layers) })
} else {
None
};
// Make sure that if this view is a multiview, it is set to be an array
if this_multiview.is_some() && view.desc.dimension != TextureViewDimension::D2Array {
return Err(RenderPassErrorInner::MultiViewDimensionMismatch);
}
// Validate matching first, or store the first one
if let Some(multiview) = detected_multiview {
if multiview != this_multiview {
return Err(RenderPassErrorInner::MultiViewMismatch);
}
} else {
// Multiview is only supported if the feature is enabled
if this_multiview.is_some() {
device.require_features(wgt::Features::MULTIVIEW)?;
}
detected_multiview = Some(this_multiview);
}
Ok(())
};
let mut add_view = |view: &TextureView, location| {
let render_extent = view.render_extent.map_err(|reason| {
RenderPassErrorInner::TextureViewIsNotRenderable { location, reason }
})?;
if let Some(ex) = extent {
if ex != render_extent {
return Err(RenderPassErrorInner::AttachmentsDimensionMismatch {
expected_location: attachment_location,
expected_extent: ex,
actual_location: location,
actual_extent: render_extent,
});
}
} else {
extent = Some(render_extent);
}
if sample_count == 0 {
sample_count = view.samples;
} else if sample_count != view.samples {
return Err(RenderPassErrorInner::AttachmentSampleCountMismatch {
expected_location: attachment_location,
expected_samples: sample_count,
actual_location: location,
actual_samples: view.samples,
});
}
attachment_location = location;
Ok(())
};
let mut depth_stencil = None;
if let Some(at) = depth_stencil_attachment.as_ref() {
let view = &at.view;
check_multiview(view)?;
add_view(view, AttachmentErrorLocation::Depth)?;
let ds_aspects = view.desc.aspects();
if !ds_aspects.contains(hal::FormatAspects::STENCIL)
|| (at.stencil.load_op().eq_variant(at.depth.load_op())
&& at.stencil.store_op() == at.depth.store_op())
{
Self::add_pass_texture_init_actions(
at.depth.load_op(),
at.depth.store_op(),
texture_memory_actions,
view,
&mut pending_discard_init_fixups,
);
} else if !ds_aspects.contains(hal::FormatAspects::DEPTH) {
Self::add_pass_texture_init_actions(
at.stencil.load_op(),
at.stencil.store_op(),
texture_memory_actions,
view,
&mut pending_discard_init_fixups,
);
} else {
// This is the only place (anywhere in wgpu) where Stencil &
// Depth init state can diverge.
//
// To safe us the overhead of tracking init state of texture
// aspects everywhere, we're going to cheat a little bit in
// order to keep the init state of both Stencil and Depth
// aspects in sync. The expectation is that we hit this path
// extremely rarely!
//
// Diverging LoadOp, i.e. Load + Clear:
//
// Record MemoryInitKind::NeedsInitializedMemory for the entire
// surface, a bit wasteful on unit but no negative effect!
//
// Rationale: If the loaded channel is uninitialized it needs
// clearing, the cleared channel doesn't care. (If everything is
// already initialized nothing special happens)
//
// (possible minor optimization: Clear caused by
// NeedsInitializedMemory should know that it doesn't need to
// clear the aspect that was set to C)
let need_init_beforehand =
at.depth.load_op() == LoadOp::Load || at.stencil.load_op() == LoadOp::Load;
if need_init_beforehand {
pending_discard_init_fixups.extend(
texture_memory_actions.register_init_action(&TextureInitTrackerAction {
texture: view.parent.clone(),
range: TextureInitRange::from(view.selector.clone()),
kind: MemoryInitKind::NeedsInitializedMemory,
}),
);
}
// Diverging Store, i.e. Discard + Store:
//
// Immediately zero out channel that is set to discard after
// we're done with the render pass. This allows us to set the
// entire surface to MemoryInitKind::ImplicitlyInitialized (if
// it isn't already set to NeedsInitializedMemory).
//
// (possible optimization: Delay and potentially drop this zeroing)
if at.depth.store_op() != at.stencil.store_op() {
if !need_init_beforehand {
texture_memory_actions.register_implicit_init(
&view.parent,
TextureInitRange::from(view.selector.clone()),
);
}
divergent_discarded_depth_stencil_aspect = Some((
if at.depth.store_op() == StoreOp::Discard {
wgt::TextureAspect::DepthOnly
} else {
wgt::TextureAspect::StencilOnly
},
view.clone(),
));
} else if at.depth.store_op() == StoreOp::Discard {
// Both are discarded using the regular path.
discarded_surfaces.push(TextureSurfaceDiscard {
texture: view.parent.clone(),
mip_level: view.selector.mips.start,
layer: view.selector.layers.start,
});
}
}
is_depth_read_only = at.depth.is_readonly();
is_stencil_read_only = at.stencil.is_readonly();
let usage = if is_depth_read_only
&& is_stencil_read_only
&& device
.downlevel
.flags
.contains(wgt::DownlevelFlags::READ_ONLY_DEPTH_STENCIL)
{
hal::TextureUses::DEPTH_STENCIL_READ | hal::TextureUses::RESOURCE
} else {
hal::TextureUses::DEPTH_STENCIL_WRITE
};
render_attachments.push(view.to_render_attachment(usage));
depth_stencil = Some(hal::DepthStencilAttachment {
target: hal::Attachment {
view: view.try_raw(snatch_guard)?,
usage,
},
depth_ops: at.depth.hal_ops(),
stencil_ops: at.stencil.hal_ops(),
clear_value: (at.depth.clear_value(), at.stencil.clear_value()),
});
}
let mut color_attachments_hal =
ArrayVec::<Option<hal::ColorAttachment<_>>, { hal::MAX_COLOR_ATTACHMENTS }>::new();
for (index, attachment) in color_attachments.iter().enumerate() {
let at = if let Some(attachment) = attachment.as_ref() {
attachment
} else {
color_attachments_hal.push(None);
continue;
};
let color_view: &TextureView = &at.view;
color_view.same_device(device)?;
check_multiview(color_view)?;
add_view(
color_view,
AttachmentErrorLocation::Color {
index,
resolve: false,
},
)?;
if !color_view
.desc
.aspects()
.contains(hal::FormatAspects::COLOR)
{
return Err(RenderPassErrorInner::ColorAttachment(
ColorAttachmentError::InvalidFormat(color_view.desc.format),
));
}
Self::add_pass_texture_init_actions(
at.load_op,
at.store_op,
texture_memory_actions,
color_view,
&mut pending_discard_init_fixups,
);
render_attachments
.push(color_view.to_render_attachment(hal::TextureUses::COLOR_TARGET));
let mut hal_resolve_target = None;
if let Some(resolve_view) = &at.resolve_target {
resolve_view.same_device(device)?;
check_multiview(resolve_view)?;
let resolve_location = AttachmentErrorLocation::Color {
index,
resolve: true,
};
let render_extent = resolve_view.render_extent.map_err(|reason| {
RenderPassErrorInner::TextureViewIsNotRenderable {
location: resolve_location,
reason,
}
})?;
if color_view.render_extent.unwrap() != render_extent {
return Err(RenderPassErrorInner::AttachmentsDimensionMismatch {
expected_location: attachment_location,
expected_extent: extent.unwrap_or_default(),
actual_location: resolve_location,
actual_extent: render_extent,
});
}
if color_view.samples == 1 || resolve_view.samples != 1 {
return Err(RenderPassErrorInner::InvalidResolveSampleCounts {
location: resolve_location,
src: color_view.samples,
dst: resolve_view.samples,
});
}
if color_view.desc.format != resolve_view.desc.format {
return Err(RenderPassErrorInner::MismatchedResolveTextureFormat {
location: resolve_location,
src: color_view.desc.format,
dst: resolve_view.desc.format,
});
}
if !resolve_view
.format_features
.flags
.contains(wgt::TextureFormatFeatureFlags::MULTISAMPLE_RESOLVE)
{
return Err(RenderPassErrorInner::UnsupportedResolveTargetFormat {
location: resolve_location,
format: resolve_view.desc.format,
});
}
texture_memory_actions.register_implicit_init(
&resolve_view.parent,
TextureInitRange::from(resolve_view.selector.clone()),
);
render_attachments
.push(resolve_view.to_render_attachment(hal::TextureUses::COLOR_TARGET));
hal_resolve_target = Some(hal::Attachment {
view: resolve_view.try_raw(snatch_guard)?,
usage: hal::TextureUses::COLOR_TARGET,
});
}
color_attachments_hal.push(Some(hal::ColorAttachment {
target: hal::Attachment {
view: color_view.try_raw(snatch_guard)?,
usage: hal::TextureUses::COLOR_TARGET,
},
resolve_target: hal_resolve_target,
ops: at.hal_ops(),
clear_value: at.clear_value(),
}));
}
let extent = extent.ok_or(RenderPassErrorInner::MissingAttachments)?;
let multiview = detected_multiview.expect("Multiview was not detected, no attachments");
let attachment_formats = AttachmentData {
colors: color_attachments
.iter()
.map(|at| at.as_ref().map(|at| at.view.desc.format))
.collect(),
resolves: color_attachments
.iter()
.filter_map(|at| {
at.as_ref().and_then(|at| {
at.resolve_target
.as_ref()
.map(|resolve| resolve.desc.format)
})
})
.collect(),
depth_stencil: depth_stencil_attachment
.as_ref()
.map(|at| at.view.desc.format),
};
let context = RenderPassContext {
attachments: attachment_formats,
sample_count,
multiview,
};
let timestamp_writes_hal = if let Some(tw) = timestamp_writes.as_ref() {
let query_set = &tw.query_set;
query_set.same_device(device)?;
if let Some(index) = tw.beginning_of_pass_write_index {
pending_query_resets.use_query_set(query_set, index);
}
if let Some(index) = tw.end_of_pass_write_index {
pending_query_resets.use_query_set(query_set, index);
}
Some(hal::PassTimestampWrites {
query_set: query_set.raw(),
beginning_of_pass_write_index: tw.beginning_of_pass_write_index,
end_of_pass_write_index: tw.end_of_pass_write_index,
})
} else {
None
};
let occlusion_query_set_hal = if let Some(query_set) = occlusion_query_set.as_ref() {
query_set.same_device(device)?;
Some(query_set.raw())
} else {
None
};
let hal_desc = hal::RenderPassDescriptor {
label: hal_label,
extent,
sample_count,
color_attachments: &color_attachments_hal,
depth_stencil_attachment: depth_stencil,
multiview,
timestamp_writes: timestamp_writes_hal,
occlusion_query_set: occlusion_query_set_hal,
};
unsafe {
encoder.raw.begin_render_pass(&hal_desc);
};
drop(color_attachments_hal); // Drop, so we can consume `color_attachments` for the tracker.
// Can't borrow the tracker more than once, so have to add to the tracker after the `begin_render_pass` hal call.
if let Some(tw) = timestamp_writes.take() {
trackers.query_sets.insert_single(tw.query_set);
};
if let Some(occlusion_query_set) = occlusion_query_set.take() {
trackers.query_sets.insert_single(occlusion_query_set);
};
if let Some(at) = depth_stencil_attachment.take() {
trackers.views.insert_single(at.view.clone());
}
for at in color_attachments.into_iter().flatten() {
trackers.views.insert_single(at.view.clone());
if let Some(resolve_target) = at.resolve_target {
trackers.views.insert_single(resolve_target);
}
}
Ok(Self {
context,
usage_scope: device.new_usage_scope(),
render_attachments,
is_depth_read_only,
is_stencil_read_only,
extent,
pending_discard_init_fixups,
divergent_discarded_depth_stencil_aspect,
multiview,
})
}
fn finish(
mut self,
raw: &mut dyn hal::DynCommandEncoder,
snatch_guard: &SnatchGuard,
) -> Result<(UsageScope<'d>, SurfacesInDiscardState), RenderPassErrorInner> {
profiling::scope!("RenderPassInfo::finish");
unsafe {
raw.end_render_pass();
}
for ra in self.render_attachments {
let texture = &ra.texture;
texture.check_usage(TextureUsages::RENDER_ATTACHMENT)?;
// the tracker set of the pass is always in "extend" mode
unsafe {
self.usage_scope.textures.merge_single(
texture,
Some(ra.selector.clone()),
ra.usage,
)?
};
}
// If either only stencil or depth was discarded, we put in a special
// clear pass to keep the init status of the aspects in sync. We do this
// so we don't need to track init state for depth/stencil aspects
// individually.
//
// Note that we don't go the usual route of "brute force" initializing
// the texture when need arises here, since this path is actually
// something a user may genuinely want (where as the other cases are
// more seen along the lines as gracefully handling a user error).
if let Some((aspect, view)) = self.divergent_discarded_depth_stencil_aspect {
let (depth_ops, stencil_ops) = if aspect == wgt::TextureAspect::DepthOnly {
(
hal::AttachmentOps::STORE, // clear depth
hal::AttachmentOps::LOAD | hal::AttachmentOps::STORE, // unchanged stencil
)
} else {
(
hal::AttachmentOps::LOAD | hal::AttachmentOps::STORE, // unchanged stencil
hal::AttachmentOps::STORE, // clear depth
)
};
let desc = hal::RenderPassDescriptor::<'_, _, dyn hal::DynTextureView> {
label: Some("(wgpu internal) Zero init discarded depth/stencil aspect"),
extent: view.render_extent.unwrap(),
sample_count: view.samples,
color_attachments: &[],
depth_stencil_attachment: Some(hal::DepthStencilAttachment {
target: hal::Attachment {
view: view.try_raw(snatch_guard)?,
usage: hal::TextureUses::DEPTH_STENCIL_WRITE,
},
depth_ops,
stencil_ops,
clear_value: (0.0, 0),
}),
multiview: self.multiview,
timestamp_writes: None,
occlusion_query_set: None,
};
unsafe {
raw.begin_render_pass(&desc);
raw.end_render_pass();
}
}
Ok((self.usage_scope, self.pending_discard_init_fixups))
}
}
impl Global {
/// Creates a render pass.
///
/// If creation fails, an invalid pass is returned.
/// Any operation on an invalid pass will return an error.
///
/// If successful, puts the encoder into the [`Locked`] state.
///
/// [`Locked`]: crate::command::CommandEncoderStatus::Locked
pub fn command_encoder_create_render_pass(
&self,
encoder_id: id::CommandEncoderId,
desc: &RenderPassDescriptor<'_>,
) -> (RenderPass, Option<CommandEncoderError>) {
fn fill_arc_desc(
hub: &crate::hub::Hub,
desc: &RenderPassDescriptor<'_>,
arc_desc: &mut ArcRenderPassDescriptor,
device: &Device,
) -> Result<(), CommandEncoderError> {
let query_sets = hub.query_sets.read();
let texture_views = hub.texture_views.read();
let max_color_attachments = device.limits.max_color_attachments as usize;
if desc.color_attachments.len() > max_color_attachments {
return Err(CommandEncoderError::InvalidColorAttachment(
ColorAttachmentError::TooMany {
given: desc.color_attachments.len(),
limit: max_color_attachments,
},
));
}
for color_attachment in desc.color_attachments.iter() {
if let Some(RenderPassColorAttachment {
view: view_id,
resolve_target,
load_op,
store_op,
}) = color_attachment
{
let view = texture_views.get(*view_id).get()?;
view.same_device(device)?;
let resolve_target = if let Some(resolve_target_id) = resolve_target {
let rt_arc = texture_views.get(*resolve_target_id).get()?;
rt_arc.same_device(device)?;
Some(rt_arc)
} else {
None
};
arc_desc
.color_attachments
.push(Some(ArcRenderPassColorAttachment {
view,
resolve_target,
load_op: *load_op,
store_op: *store_op,
}));
} else {
arc_desc.color_attachments.push(None);
}
}
arc_desc.depth_stencil_attachment =
// https://gpuweb.github.io/gpuweb/#abstract-opdef-gpurenderpassdepthstencilattachment-gpurenderpassdepthstencilattachment-valid-usage
if let Some(depth_stencil_attachment) = desc.depth_stencil_attachment {
let view = texture_views.get(depth_stencil_attachment.view).get()?;
view.same_device(device)?;
let format = view.desc.format;
if !format.is_depth_stencil_format() {
return Err(CommandEncoderError::InvalidAttachment(AttachmentError::InvalidDepthStencilAttachmentFormat(
view.desc.format,
)));
}
Some(ArcRenderPassDepthStencilAttachment {
view,
depth: if format.has_depth_aspect() {
depth_stencil_attachment.depth.resolve(|clear| if let Some(clear) = clear {
// If this.depthLoadOp is "clear", this.depthClearValue must be provided and must be between 0.0 and 1.0, inclusive.
if !(0.0..=1.0).contains(&clear) {
Err(AttachmentError::ClearValueOutOfRange(clear))
} else {
Ok(clear)
}
} else {
Err(AttachmentError::NoClearValue)
})?
} else {
ResolvedPassChannel::ReadOnly
},
stencil: if format.has_stencil_aspect() {
depth_stencil_attachment.stencil.resolve(|clear| Ok(clear.unwrap_or_default()))?
} else {
ResolvedPassChannel::ReadOnly
},
})
} else {
None
};
arc_desc.timestamp_writes = desc
.timestamp_writes
.map(|tw| Global::validate_pass_timestamp_writes(device, &query_sets, tw))
.transpose()?;
arc_desc.occlusion_query_set =
if let Some(occlusion_query_set) = desc.occlusion_query_set {
let query_set = query_sets.get(occlusion_query_set).get()?;
query_set.same_device(device)?;
Some(query_set)
} else {
None
};
Ok(())
}
let hub = &self.hub;
let mut arc_desc = ArcRenderPassDescriptor {
label: &desc.label,
timestamp_writes: None,
color_attachments: ArrayVec::new(),
depth_stencil_attachment: None,
occlusion_query_set: None,
};
let make_err = |e, arc_desc| (RenderPass::new(None, arc_desc), Some(e));
let cmd_buf = hub.command_buffers.get(encoder_id.into_command_buffer_id());
match cmd_buf.data.lock().lock_encoder() {
Ok(_) => {}
Err(e) => return make_err(e, arc_desc),
};
let err = fill_arc_desc(hub, desc, &mut arc_desc, &cmd_buf.device).err();
(RenderPass::new(Some(cmd_buf), arc_desc), err)
}
/// Note that this differs from [`Self::render_pass_end`], it will
/// create a new pass, replay the commands and end the pass.
#[doc(hidden)]
#[cfg(any(feature = "serde", feature = "replay"))]
pub fn render_pass_end_with_unresolved_commands(
&self,
encoder_id: id::CommandEncoderId,
base: BasePass<super::RenderCommand>,
color_attachments: &[Option<RenderPassColorAttachment>],
depth_stencil_attachment: Option<&RenderPassDepthStencilAttachment>,
timestamp_writes: Option<&PassTimestampWrites>,
occlusion_query_set: Option<id::QuerySetId>,
) -> Result<(), RenderPassError> {
let pass_scope = PassErrorScope::Pass;
#[cfg(feature = "trace")]
{
let cmd_buf = self
.hub
.command_buffers
.get(encoder_id.into_command_buffer_id());
let mut cmd_buf_data = cmd_buf.data.lock();
let cmd_buf_data = cmd_buf_data.get_inner().map_pass_err(pass_scope)?;
if let Some(ref mut list) = cmd_buf_data.commands {
list.push(crate::device::trace::Command::RunRenderPass {
base: BasePass {
label: base.label.clone(),
commands: base.commands.clone(),
dynamic_offsets: base.dynamic_offsets.clone(),
string_data: base.string_data.clone(),
push_constant_data: base.push_constant_data.clone(),
},
target_colors: color_attachments.to_vec(),
target_depth_stencil: depth_stencil_attachment.cloned(),
timestamp_writes: timestamp_writes.cloned(),
occlusion_query_set_id: occlusion_query_set,
});
}
}
let BasePass {
label,
commands,
dynamic_offsets,
string_data,
push_constant_data,
} = base;
let (mut render_pass, encoder_error) = self.command_encoder_create_render_pass(
encoder_id,
&RenderPassDescriptor {
label: label.as_deref().map(Cow::Borrowed),
color_attachments: Cow::Borrowed(color_attachments),
depth_stencil_attachment,
timestamp_writes,
occlusion_query_set,
},
);
if let Some(err) = encoder_error {
return Err(RenderPassError {
scope: pass_scope,
inner: err.into(),
});
};
render_pass.base = Some(BasePass {
label,
commands: super::RenderCommand::resolve_render_command_ids(&self.hub, &commands)?,
dynamic_offsets,
string_data,
push_constant_data,
});
self.render_pass_end(&mut render_pass)
}
pub fn render_pass_end(&self, pass: &mut RenderPass) -> Result<(), RenderPassError> {
let pass_scope = PassErrorScope::Pass;
let cmd_buf = pass
.parent
.as_ref()
.ok_or(RenderPassErrorInner::InvalidParentEncoder)
.map_pass_err(pass_scope)?;
let base = pass
.base
.take()
.ok_or(RenderPassErrorInner::PassEnded)
.map_pass_err(pass_scope)?;
profiling::scope!(
"CommandEncoder::run_render_pass {}",
base.label.as_deref().unwrap_or("")
);
let mut cmd_buf_data = cmd_buf.data.lock();
let mut cmd_buf_data_guard = cmd_buf_data.unlock_encoder().map_pass_err(pass_scope)?;
let cmd_buf_data = &mut *cmd_buf_data_guard;
let device = &cmd_buf.device;
let snatch_guard = &device.snatchable_lock.read();
let (scope, pending_discard_init_fixups) = {
device.check_is_valid().map_pass_err(pass_scope)?;
let encoder = &mut cmd_buf_data.encoder;
let tracker = &mut cmd_buf_data.trackers;
let buffer_memory_init_actions = &mut cmd_buf_data.buffer_memory_init_actions;
let texture_memory_actions = &mut cmd_buf_data.texture_memory_actions;
let pending_query_resets = &mut cmd_buf_data.pending_query_resets;
// We automatically keep extending command buffers over time, and because
// we want to insert a command buffer _before_ what we're about to record,
// we need to make sure to close the previous one.
encoder.close_if_open().map_pass_err(pass_scope)?;
encoder
.open_pass(base.label.as_deref())
.map_pass_err(pass_scope)?;
let info = RenderPassInfo::start(
device,
hal_label(base.label.as_deref(), device.instance_flags),
pass.color_attachments.take(),
pass.depth_stencil_attachment.take(),
pass.timestamp_writes.take(),
// Still needed down the line.
// TODO(wumpf): by restructuring the code, we could get rid of some of this Arc clone.
pass.occlusion_query_set.clone(),
encoder,
tracker,
texture_memory_actions,
pending_query_resets,
snatch_guard,
)
.map_pass_err(pass_scope)?;
let indices = &device.tracker_indices;
tracker.buffers.set_size(indices.buffers.size());
tracker.textures.set_size(indices.textures.size());
let mut state = State {
pipeline_flags: PipelineFlags::empty(),
binder: Binder::new(),
blend_constant: OptionalState::Unused,
stencil_reference: 0,
pipeline: None,
index: IndexState::default(),
vertex: VertexState::default(),
debug_scope_depth: 0,
info,
snatch_guard,
device,
raw_encoder: encoder.raw.as_mut(),
tracker,
buffer_memory_init_actions,
texture_memory_actions,
temp_offsets: Vec::new(),
dynamic_offset_count: 0,
string_offset: 0,
active_occlusion_query: None,
active_pipeline_statistics_query: None,
};
for command in base.commands {
match command {
ArcRenderCommand::SetBindGroup {
index,
num_dynamic_offsets,
bind_group,
} => {
let scope = PassErrorScope::SetBindGroup;
set_bind_group(
&mut state,
cmd_buf,
&base.dynamic_offsets,
index,
num_dynamic_offsets,
bind_group,
)
.map_pass_err(scope)?;
}
ArcRenderCommand::SetPipeline(pipeline) => {
let scope = PassErrorScope::SetPipelineRender;
set_pipeline(&mut state, cmd_buf, pipeline).map_pass_err(scope)?;
}
ArcRenderCommand::SetIndexBuffer {
buffer,
index_format,
offset,
size,
} => {
let scope = PassErrorScope::SetIndexBuffer;
set_index_buffer(&mut state, cmd_buf, buffer, index_format, offset, size)
.map_pass_err(scope)?;
}
ArcRenderCommand::SetVertexBuffer {
slot,
buffer,
offset,
size,
} => {
let scope = PassErrorScope::SetVertexBuffer;
--> --------------------
--> maximum size reached
--> --------------------
[ Dauer der Verarbeitung: 0.46 Sekunden
(vorverarbeitet)
]
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2026-04-02
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