这是indexloc提供的服务，不要输入任何密码
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[WIP] Read-only GPUTextureView #860

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[WIP] Read-only GPUTextureView #860

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27 changes: 8 additions & 19 deletions spec/index.bs
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Original file line number Diff line number Diff line change
Expand Up @@ -1553,6 +1553,7 @@ dictionary GPUTextureViewDescriptor : GPUObjectDescriptorBase {
GPUTextureFormat format;
GPUTextureViewDimension dimension;
GPUTextureAspect aspect = "all";
boolean readOnly = false;
GPUIntegerCoordinate baseMipLevel = 0;
GPUIntegerCoordinate mipLevelCount = 0;
GPUIntegerCoordinate baseArrayLayer = 0;
Expand Down Expand Up @@ -4309,6 +4310,8 @@ dictionary GPURenderPassColorAttachmentDescriptor {
1. |this|.{{GPURenderPassColorAttachmentDescriptor/attachment}}.{{GPUTextureView/[[texture]]}}.{{GPUTexture/[[textureUsage]]}}
must contain {{GPUTextureUsage/OUTPUT_ATTACHMENT}}.
1. |this|.{{GPURenderPassColorAttachmentDescriptor/attachment}} must be a view of a single [=subresource=].
1. |this|.{{GPURenderPassColorAttachmentDescriptor/attachment}}.{{GPUTextureView/[[descriptor]]}}.{{GPUTextureViewDescriptor/readOnly}}
must be `false`.
1. If |this|.{{GPURenderPassColorAttachmentDescriptor/resolveTarget}} is not `null`:

1. |this|.{{GPURenderPassColorAttachmentDescriptor/attachment}} must be multisampled.
Expand All @@ -4334,11 +4337,9 @@ dictionary GPURenderPassDepthStencilAttachmentDescriptor {

required (GPULoadOp or float) depthLoadValue;
required GPUStoreOp depthStoreOp;
boolean depthReadOnly = false;

required (GPULoadOp or GPUStencilValue) stencilLoadValue;
required GPUStoreOp stencilStoreOp;
boolean stencilReadOnly = false;
};
</script>

Expand All @@ -4361,11 +4362,6 @@ dictionary GPURenderPassDepthStencilAttachmentDescriptor {
The store operation to perform on {{GPURenderPassDepthStencilAttachmentDescriptor/attachment}}'s
depth component after executing the render pass.

: <dfn>depthReadOnly</dfn>
::
Indicates that the depth component of {{GPURenderPassDepthStencilAttachmentDescriptor/attachment}}
is read only.

: <dfn>stencilLoadValue</dfn>
::
If a {{GPULoadOp}}, indicates the load operation to perform on
Expand All @@ -4380,10 +4376,6 @@ dictionary GPURenderPassDepthStencilAttachmentDescriptor {
The store operation to perform on {{GPURenderPassDepthStencilAttachmentDescriptor/attachment}}'s
stencil component after executing the render pass.

: <dfn>stencilReadOnly</dfn>
::
Indicates that the stencil component of {{GPURenderPassDepthStencilAttachmentDescriptor/attachment}}
is read only.
</dl>

<div class=validusage dfn-for=GPURenderPassDepthStencilAttachmentDescriptor>
Expand All @@ -4398,14 +4390,11 @@ dictionary GPURenderPassDepthStencilAttachmentDescriptor {
single [=subresource=].
1. |this|.{{GPURenderPassDepthStencilAttachmentDescriptor/attachment}}.{{GPUTexture/[[textureUsage]]}}
must contain {{GPUTextureUsage/OUTPUT_ATTACHMENT}}.
1. |this|.{{GPURenderPassDepthStencilAttachmentDescriptor/depthReadOnly}} is `true`,
|this|.{{GPURenderPassDepthStencilAttachmentDescriptor/depthLoadValue}} must be
{{GPULoadOp/"load"}} and |this|.{{GPURenderPassDepthStencilAttachmentDescriptor/depthStoreOp}}
must be {{GPUStoreOp/"store"}}.
1. |this|.{{GPURenderPassDepthStencilAttachmentDescriptor/stencilReadOnly}} is `true`,
|this|.{{GPURenderPassDepthStencilAttachmentDescriptor/stencilLoadValue}} must be
{{GPULoadOp/"load"}} and |this|.{{GPURenderPassDepthStencilAttachmentDescriptor/stencilStoreOp}}
must be {{GPUStoreOp/"store"}}.
1. if |this|.{{GPURenderPassDepthStencilAttachmentDescriptor/attachment}}.{{GPUTextureView/[[descriptor]]}}.{{GPUTextureViewDescriptor/readOnly}} is `true`:
- |this|.{{GPURenderPassDepthStencilAttachmentDescriptor/depthLoadValue}} must be {{GPULoadOp/"load"}}.
- |this|.{{GPURenderPassDepthStencilAttachmentDescriptor/depthStoreOp}} must be {{GPUStoreOp/"store"}}.
- |this|.{{GPURenderPassDepthStencilAttachmentDescriptor/stencilLoadValue}} must be {{GPULoadOp/"load"}}.
- |this|.{{GPURenderPassDepthStencilAttachmentDescriptor/stencilStoreOp}} must be {{GPUStoreOp/"store"}}.

Issue: Describe the remaining validation rules for this type.
</div>
Expand Down