ezGALResourceState Struct Reference

Describes the usage state of a GPU resource for barrier and layout transition purposes. More...

#include <Enumerations.h>

Classes
struct	Bits

Public Types
enum	Enum : ezUInt32 {   Unknown = 0 , ShaderResource = EZ_BIT(0) , ConstantBuffer = EZ_BIT(1) , VertexBuffer = EZ_BIT(2) ,   IndexBuffer = EZ_BIT(3) , DrawIndirect = EZ_BIT(4) , DepthStencilRead = EZ_BIT(5) , CopySource = EZ_BIT(6) ,   ResolveSource = EZ_BIT(7) , UnorderedAccess = EZ_BIT(16) , RenderTarget = EZ_BIT(17) , DepthStencilWrite = EZ_BIT(18) ,   CopyDestination = EZ_BIT(19) , ResolveDestination = EZ_BIT(20) , Discard = EZ_BIT(28) , Present = EZ_BIT(29) ,   CpuRead = EZ_BIT(30) , CpuWrite = EZ_BIT(31) , AllTextureStates = ShaderResource | DepthStencilRead | CopySource | ResolveSource | UnorderedAccess | RenderTarget | DepthStencilWrite | CopyDestination | ResolveDestination | Discard , AllBufferStates = ShaderResource | ConstantBuffer | VertexBuffer | IndexBuffer | DrawIndirect | CopySource | UnorderedAccess | CopyDestination ,   AllReadStates = ShaderResource | ConstantBuffer | VertexBuffer | IndexBuffer | DrawIndirect | DepthStencilRead | CopySource | ResolveSource , AllWriteStates = UnorderedAccess | RenderTarget | DepthStencilWrite | CopyDestination | ResolveDestination | Discard , Default = Unknown }
using	StorageType = ezUInt32

Detailed Description

Describes the usage state of a GPU resource for barrier and layout transition purposes.

Read-only states can be combined via bitwise OR when a resource is used for multiple read purposes simultaneously (buffers ONLY, e.g., sampled in a shader while also bound as a vertex buffer). Write states are exclusive and must not be combined with other states.

Not every state is valid for every resource type. Using an invalid state (e.g., RenderTarget on a buffer) is a usage error.

Member Enumeration Documentation

Enum

enum ezGALResourceState::Enum : ezUInt32

Enumerator
ShaderResource	Texture/buffer read by a shader stage.
ConstantBuffer	Bound as a constant/uniform buffer.
VertexBuffer	Bound as a vertex buffer.
IndexBuffer	Bound as an index buffer.
DrawIndirect	Indirect draw/dispatch argument buffer.
DepthStencilRead	Depth/stencil attachment without writes.
CopySource	Source of a copy or blit operation.
ResolveSource	Source of an MSAA resolve.
UnorderedAccess	UAV/storage write.
RenderTarget	Color render target attachment.
DepthStencilWrite	Depth/stencil attachment with writes (implies read)
CopyDestination	Destination of a copy or blit operation.
ResolveDestination	Destination of an MSAA resolve.
Discard	Textures write only: The previous data / layout can be discarded.
Present	Swapchain presentation.
CpuRead	GPU->CPU readback (e.g., into a staging buffer)
CpuWrite	CPU->GPU upload (e.g., from a staging buffer)

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The documentation for this struct was generated from the following file:

• /home/runner/work/ezEngine/ezEngine/Code/Engine/RendererFoundation/Descriptors/Enumerations.h