MoltenVK/MoltenVK/Commands/MVKCmdTransfer.h - external/github.com/KhronosGroup/MoltenVK - Git at Google

 /*
  * MVKCmdTransfer.h
  *
  * Copyright (c) 2014-2018 The Brenwill Workshop Ltd. (http://www.brenwill.com)
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *     http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */

 #pragma once

 #include "MVKCommand.h"
 #include "MVKMTLBufferAllocation.h"
 #include "MVKCommandResourceFactory.h"
 #include "MVKFoundation.h"
 #include <vector>

 #import <Metal/Metal.h>

 class MVKCommandBuffer;
 class MVKImage;
 class MVKBuffer;


 #pragma mark -
 #pragma mark MVKCmdCopyImage

 /** Describes the Metal texture copying parameters. */
 typedef struct {
 	uint32_t	srcLevel;
 	uint32_t	srcSlice;
 	MTLOrigin	srcOrigin;
 	MTLSize		srcSize;
 	uint32_t	dstLevel;
 	uint32_t	dstSlice;
 	MTLOrigin	dstOrigin;
 } MVKMetalCopyTextureRegion;

 /** Vulkan command to copy image regions. */
 class MVKCmdCopyImage : public MVKCommand {

 public:
 	void setContent(VkImage srcImage,
 					VkImageLayout srcImageLayout,
 					VkImage dstImage,
 					VkImageLayout dstImageLayout,
 					uint32_t regionCount,
 					const VkImageCopy* pRegions,
                     MVKCommandUse commandUse = kMVKCommandUseCopyImage);

 	void encode(MVKCommandEncoder* cmdEncoder) override;

 	MVKCmdCopyImage(MVKCommandTypePool<MVKCmdCopyImage>* pool) :
 		MVKCommand::MVKCommand((MVKCommandTypePool<MVKCommand>*)pool) {}

 protected:
     void addMetalCopyRegions(const VkImageCopy* pRegion);

 	MVKImage* _srcImage;
 	VkImageLayout _srcLayout;
 	MVKImage* _dstImage;
 	VkImageLayout _dstLayout;
 	std::vector<MVKMetalCopyTextureRegion> _mtlTexCopyRegions;
     MVKCommandUse _commandUse = kMVKCommandUseNone;
 };


 #pragma mark -
 #pragma mark MVKCmdBlitImage

 /** Number of vertices in a BLIT rectangle. */
 #define kMVKBlitVertexCount		4

 /** Describes Metal texture rendering parameters. */
 typedef struct {
 	uint32_t	srcLevel;
 	uint32_t	srcSlice;
 	uint32_t	dstLevel;
 	uint32_t	dstSlice;
 	MVKVertexPosTex vertices[kMVKBlitVertexCount];
 } MVKMetalBlitTextureRender;

 /** Vulkan command to BLIT image regions. */
 class MVKCmdBlitImage : public MVKCmdCopyImage {

 public:
 	void setContent(VkImage srcImage,
 					VkImageLayout srcImageLayout,
 					VkImage dstImage,
 					VkImageLayout dstImageLayout,
 					uint32_t regionCount,
 					const VkImageBlit* pRegions,
                     VkFilter filter,
                     MVKCommandUse commandUse = kMVKCommandUseBlitImage);

 	void encode(MVKCommandEncoder* cmdEncoder) override;

 	MVKCmdBlitImage(MVKCommandTypePool<MVKCmdBlitImage>* pool);

 	~MVKCmdBlitImage() override;

 protected:
 	bool canCopy(const VkImageBlit* pRegion);
     void addMetalCopyRegions(const VkImageBlit* pRegion);
     void addMetalBlitRenders(const VkImageBlit* pRegion);
 	void populateVertices(MVKVertexPosTex* vertices, const VkImageBlit* pRegion);
     void initMTLRenderPassDescriptor();

 	MTLRenderPassDescriptor* _mtlRenderPassDescriptor;
 	MTLSamplerMinMagFilter _mtlFilter;
     MTLPixelFormat _mtlPixFmt;
 	MVKRPSKeyBlitImg _blitKey;
 	std::vector<MVKMetalBlitTextureRender> _mtlTexBlitRenders;
 };


 #pragma mark -
 #pragma mark MVKCmdResolveImage

 /** Describes Metal texture resolve parameters. */
 typedef struct {
     NSUInteger	level;
     NSUInteger	slice;
 } MVKMetalResolveSlice;

 /** Vulkan command to resolve image regions. */
 class MVKCmdResolveImage : public MVKCommand {

 public:
     void setContent(VkImage srcImage,
                     VkImageLayout srcImageLayout,
                     VkImage dstImage,
                     VkImageLayout dstImageLayout,
                     uint32_t regionCount,
                     const VkImageResolve* pRegions);

     void encode(MVKCommandEncoder* cmdEncoder) override;

     MVKCmdResolveImage(MVKCommandTypePool<MVKCmdResolveImage>* pool);

     ~MVKCmdResolveImage() override;

 protected:
     void addExpansionRegion(const VkImageResolve& resolveRegion);
     void addCopyRegion(const VkImageResolve& resolveRegion);
     void addResolveSlices(const VkImageResolve& resolveRegion);
     void initMTLRenderPassDescriptor();

     MVKImage* _srcImage;
     VkImageLayout _srcLayout;
     MVKImage* _dstImage;
     VkImageLayout _dstLayout;
     std::vector<VkImageBlit> _expansionRegions;
     std::vector<VkImageCopy> _copyRegions;
     MVKImageDescriptorData _transferImageData;
     MTLRenderPassDescriptor* _mtlRenderPassDescriptor;
     std::vector<MVKMetalResolveSlice> _mtlResolveSlices;
 };


 #pragma mark -
 #pragma mark MVKCmdCopyBuffer

 /** Vulkan command to copy buffer regions. */
 class MVKCmdCopyBuffer : public MVKCommand {

 public:
 	void setContent(VkBuffer srcBuffer,
 					VkBuffer destBuffer,
 					uint32_t regionCount,
 					const VkBufferCopy* pRegions);

 	void encode(MVKCommandEncoder* cmdEncoder) override;

 	MVKCmdCopyBuffer(MVKCommandTypePool<MVKCmdCopyBuffer>* pool) :
 		MVKCommand::MVKCommand((MVKCommandTypePool<MVKCommand>*)pool) {}

 protected:

 	MVKBuffer* _srcBuffer;
 	MVKBuffer* _dstBuffer;
 	std::vector<VkBufferCopy> _mtlBuffCopyRegions;
 };


 #pragma mark -
 #pragma mark MVKCmdBufferImageCopy

 /** Command to copy either from a buffer to an image, or from an image to a buffer. */
 class MVKCmdBufferImageCopy : public MVKCommand {

 public:
     void setContent(VkBuffer buffer,
                     VkImage image,
                     VkImageLayout imageLayout,
                     uint32_t regionCount,
                     const VkBufferImageCopy* pRegions,
                     bool toImage);

     void encode(MVKCommandEncoder* cmdEncoder) override;

     MVKCmdBufferImageCopy(MVKCommandTypePool<MVKCmdBufferImageCopy>* pool) :
 		MVKCommand::MVKCommand((MVKCommandTypePool<MVKCommand>*)pool) {}

 protected:
     MVKBuffer* _buffer;
     MVKImage* _image;
     VkImageLayout _imageLayout;
     std::vector<VkBufferImageCopy> _mtlBuffImgCopyRegions;
     bool _toImage = false;
 };


 #pragma mark -
 #pragma mark MVKCmdClearAttachments

 /** Vulkan command to clear attachment regions. */
 class MVKCmdClearAttachments : public MVKCommand {

 public:
     void setContent(uint32_t attachmentCount,
                     const VkClearAttachment* pAttachments,
                     uint32_t rectCount,
                     const VkClearRect* pRects);

     void encode(MVKCommandEncoder* cmdEncoder) override;

     MVKCmdClearAttachments(MVKCommandTypePool<MVKCmdClearAttachments>* pool) :
 		MVKCommand::MVKCommand((MVKCommandTypePool<MVKCommand>*)pool) {}

 protected:
     void populateVertices(float attWidth, float attHeight);
     void populateVertices(VkClearRect& clearRect, float attWidth, float attHeight);

     std::vector<VkClearRect> _clearRects;
     std::vector<simd::float4> _vertices;
     simd::float4 _clearColors[kMVKAttachmentFormatCount];
     VkClearValue _vkClearValues[kMVKAttachmentFormatCount];
     MVKRPSKeyClearAtt _rpsKey;
     uint32_t _mtlStencilValue;
     bool _isClearingDepth;
     bool _isClearingStencil;
 };


 #pragma mark -
 #pragma mark MVKCmdClearImage

 /** Vulkan command to clear an image. */
 class MVKCmdClearImage : public MVKCommand {

 public:
     void setContent(VkImage image,
                     VkImageLayout imageLayout,
                     const VkClearValue& clearValue,
                     uint32_t rangeCount,
                     const VkImageSubresourceRange* pRanges,
                     bool isDepthStencilClear);

     void encode(MVKCommandEncoder* cmdEncoder) override;

     MVKCmdClearImage(MVKCommandTypePool<MVKCmdClearImage>* pool) :
 		MVKCommand::MVKCommand((MVKCommandTypePool<MVKCommand>*)pool) {}

 protected:
     uint32_t populateMetalCopyRegions(const VkImageBlit* pRegion, uint32_t cpyRgnIdx);
     uint32_t populateMetalBlitRenders(const VkImageBlit* pRegion, uint32_t rendRgnIdx);
     void populateVertices(MVKVertexPosTex* vertices, const VkImageBlit* pRegion);

     MVKImage* _image;
     VkImageLayout _imgLayout;
     std::vector<VkImageSubresourceRange> _subresourceRanges;
 	MTLClearColor _mtlColorClearValue;
 	double _mtlDepthClearValue;
     uint32_t _mtlStencilClearValue;
     bool _isDepthStencilClear;
 };


 #pragma mark -
 #pragma mark MVKCmdFillBuffer

 /** Vulkan command to fill a buffer. */
 class MVKCmdFillBuffer : public MVKCommand {

 public:
     void setContent(VkBuffer dstBuffer, VkDeviceSize dstOffset, VkDeviceSize size, uint32_t data);

     void encode(MVKCommandEncoder* cmdEncoder) override;

     MVKCmdFillBuffer(MVKCommandTypePool<MVKCmdFillBuffer>* pool) :
 		MVKCommand::MVKCommand((MVKCommandTypePool<MVKCommand>*)pool) {}

 protected:
     MVKBuffer* _dstBuffer;
     VkDeviceSize _dstOffset;
     VkDeviceSize _size;
     uint32_t _dataValue;
 };


 #pragma mark -
 #pragma mark MVKCmdUpdateBuffer

 /** Vulkan command to update the contents of a buffer. */
 class MVKCmdUpdateBuffer : public MVKCommand {

 public:
     void setContent(VkBuffer dstBuffer,
                     VkDeviceSize dstOffset,
                     VkDeviceSize dataSize,
                     const void* pData,
                     bool useDataCache);

     void encode(MVKCommandEncoder* cmdEncoder) override;

     MVKCmdUpdateBuffer(MVKCommandTypePool<MVKCmdUpdateBuffer>* pool) :
 		MVKCommand::MVKCommand((MVKCommandTypePool<MVKCommand>*)pool) {}

 protected:
     MVKBuffer* _dstBuffer;
     VkDeviceSize _dstOffset;
     VkDeviceSize _dataSize;
     std::vector<uint8_t> _srcDataCache;
 };


 #pragma mark -
 #pragma mark Command creation functions

 /** Adds a copy image command to the specified command buffer. */
 void mvkCmdCopyImage(MVKCommandBuffer* cmdBuff,
 					 VkImage srcImage,
 					 VkImageLayout srcImageLayout,
 					 VkImage dstImage,
 					 VkImageLayout dstImageLayout,
 					 uint32_t regionCount,
 					 const VkImageCopy* pRegions);

 /** Adds a BLIT image command to the specified command buffer. */
 void mvkCmdBlitImage(MVKCommandBuffer* cmdBuff,
 					 VkImage srcImage,
 					 VkImageLayout srcImageLayout,
 					 VkImage dstImage,
 					 VkImageLayout dstImageLayout,
 					 uint32_t regionCount,
 					 const VkImageBlit* pRegions,
 					 VkFilter filter);

 /** Adds a resolve image command to the specified command buffer. */
 void mvkCmdResolveImage(MVKCommandBuffer* cmdBuff,
                      VkImage srcImage,
                      VkImageLayout srcImageLayout,
                      VkImage dstImage,
                      VkImageLayout dstImageLayout,
                      uint32_t regionCount,
                      const VkImageResolve* pRegions);

 /** Adds a copy buffer command to the specified command buffer. */
 void mvkCmdCopyBuffer(MVKCommandBuffer* cmdBuff,
 					  VkBuffer srcBuffer,
 					  VkBuffer dstBuffer,
 					  uint32_t regionCount,
 					  const VkBufferCopy* pRegions);

 /** Adds a copy buffer to image command to the specified command buffer. */
 void mvkCmdCopyBufferToImage(MVKCommandBuffer* cmdBuff,
                              VkBuffer srcBuffer,
                              VkImage dstImage,
                              VkImageLayout dstImageLayout,
                              uint32_t regionCount,
                              const VkBufferImageCopy* pRegions);

 /** Adds a copy buffer to image command to the specified command buffer. */
 void mvkCmdCopyImageToBuffer(MVKCommandBuffer* cmdBuff,
                              VkImage srcImage,
                              VkImageLayout srcImageLayout,
                              VkBuffer dstBuffer,
                              uint32_t regionCount,
                              const VkBufferImageCopy* pRegions);

 /** Adds a clear attachments command to the specified command buffer. */
 void mvkCmdClearAttachments(MVKCommandBuffer* cmdBuff,
                             uint32_t attachmentCount,
                             const VkClearAttachment* pAttachments,
                             uint32_t rectCount,
                             const VkClearRect* pRects);

 /** Adds a clear color image command to the specified command buffer. */
 void mvkCmdClearColorImage(MVKCommandBuffer* cmdBuff,
 						   VkImage image,
 						   VkImageLayout imageLayout,
 						   const VkClearColorValue* pColor,
 						   uint32_t rangeCount,
 						   const VkImageSubresourceRange* pRanges);

 /** Adds a clear depth stencil image command to the specified command buffer. */
 void mvkCmdClearDepthStencilImage(MVKCommandBuffer* cmdBuff,
                                   VkImage image,
                                   VkImageLayout imageLayout,
                                   const VkClearDepthStencilValue* pDepthStencil,
                                   uint32_t rangeCount,
                                   const VkImageSubresourceRange* pRanges);

 /** Adds a fill buffer command to the specified command buffer. */
 void mvkCmdFillBuffer(MVKCommandBuffer* cmdBuff,
                       VkBuffer dstBuffer,
                       VkDeviceSize dstOffset,
                       VkDeviceSize size,
                       uint32_t data);

 /** Adds a buffer update command to the specified command buffer. */
 void mvkCmdUpdateBuffer(MVKCommandBuffer* cmdBuff,
                         VkBuffer dstBuffer,
                         VkDeviceSize dstOffset,
                         VkDeviceSize dataSize,
                         const void* pData);
	/*
	* MVKCmdTransfer.h
	*
	* Copyright (c) 2014-2018 The Brenwill Workshop Ltd. (http://www.brenwill.com)
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*/

	#pragma once

	#include "MVKCommand.h"
	#include "MVKMTLBufferAllocation.h"
	#include "MVKCommandResourceFactory.h"
	#include "MVKFoundation.h"
	#include <vector>

	#import <Metal/Metal.h>

	class MVKCommandBuffer;
	class MVKImage;
	class MVKBuffer;


	#pragma mark -
	#pragma mark MVKCmdCopyImage

	/** Describes the Metal texture copying parameters. */
	typedef struct {
	uint32_t srcLevel;
	uint32_t srcSlice;
	MTLOrigin srcOrigin;
	MTLSize srcSize;
	uint32_t dstLevel;
	uint32_t dstSlice;
	MTLOrigin dstOrigin;
	} MVKMetalCopyTextureRegion;

	/** Vulkan command to copy image regions. */
	class MVKCmdCopyImage : public MVKCommand {

	public:
	void setContent(VkImage srcImage,
	VkImageLayout srcImageLayout,
	VkImage dstImage,
	VkImageLayout dstImageLayout,
	uint32_t regionCount,
	const VkImageCopy* pRegions,
	MVKCommandUse commandUse = kMVKCommandUseCopyImage);

	void encode(MVKCommandEncoder* cmdEncoder) override;

	MVKCmdCopyImage(MVKCommandTypePool<MVKCmdCopyImage>* pool) :
	MVKCommand::MVKCommand((MVKCommandTypePool<MVKCommand>*)pool) {}

	protected:
	void addMetalCopyRegions(const VkImageCopy* pRegion);

	MVKImage* _srcImage;
	VkImageLayout _srcLayout;
	MVKImage* _dstImage;
	VkImageLayout _dstLayout;
	std::vector<MVKMetalCopyTextureRegion> _mtlTexCopyRegions;
	MVKCommandUse _commandUse = kMVKCommandUseNone;
	};


	#pragma mark -
	#pragma mark MVKCmdBlitImage

	/** Number of vertices in a BLIT rectangle. */
	#define kMVKBlitVertexCount 4

	/** Describes Metal texture rendering parameters. */
	typedef struct {
	uint32_t srcLevel;
	uint32_t srcSlice;
	uint32_t dstLevel;
	uint32_t dstSlice;
	MVKVertexPosTex vertices[kMVKBlitVertexCount];
	} MVKMetalBlitTextureRender;

	/** Vulkan command to BLIT image regions. */
	class MVKCmdBlitImage : public MVKCmdCopyImage {

	public:
	void setContent(VkImage srcImage,
	VkImageLayout srcImageLayout,
	VkImage dstImage,
	VkImageLayout dstImageLayout,
	uint32_t regionCount,
	const VkImageBlit* pRegions,
	VkFilter filter,
	MVKCommandUse commandUse = kMVKCommandUseBlitImage);

	void encode(MVKCommandEncoder* cmdEncoder) override;

	MVKCmdBlitImage(MVKCommandTypePool<MVKCmdBlitImage>* pool);

	~MVKCmdBlitImage() override;

	protected:
	bool canCopy(const VkImageBlit* pRegion);
	void addMetalCopyRegions(const VkImageBlit* pRegion);
	void addMetalBlitRenders(const VkImageBlit* pRegion);
	void populateVertices(MVKVertexPosTex* vertices, const VkImageBlit* pRegion);
	void initMTLRenderPassDescriptor();

	MTLRenderPassDescriptor* _mtlRenderPassDescriptor;
	MTLSamplerMinMagFilter _mtlFilter;
	MTLPixelFormat _mtlPixFmt;
	MVKRPSKeyBlitImg _blitKey;
	std::vector<MVKMetalBlitTextureRender> _mtlTexBlitRenders;
	};


	#pragma mark -
	#pragma mark MVKCmdResolveImage

	/** Describes Metal texture resolve parameters. */
	typedef struct {
	NSUInteger level;
	NSUInteger slice;
	} MVKMetalResolveSlice;

	/** Vulkan command to resolve image regions. */
	class MVKCmdResolveImage : public MVKCommand {

	public:
	void setContent(VkImage srcImage,
	VkImageLayout srcImageLayout,
	VkImage dstImage,
	VkImageLayout dstImageLayout,
	uint32_t regionCount,
	const VkImageResolve* pRegions);

	void encode(MVKCommandEncoder* cmdEncoder) override;

	MVKCmdResolveImage(MVKCommandTypePool<MVKCmdResolveImage>* pool);

	~MVKCmdResolveImage() override;

	protected:
	void addExpansionRegion(const VkImageResolve& resolveRegion);
	void addCopyRegion(const VkImageResolve& resolveRegion);
	void addResolveSlices(const VkImageResolve& resolveRegion);
	void initMTLRenderPassDescriptor();

	MVKImage* _srcImage;
	VkImageLayout _srcLayout;
	MVKImage* _dstImage;
	VkImageLayout _dstLayout;
	std::vector<VkImageBlit> _expansionRegions;
	std::vector<VkImageCopy> _copyRegions;
	MVKImageDescriptorData _transferImageData;
	MTLRenderPassDescriptor* _mtlRenderPassDescriptor;
	std::vector<MVKMetalResolveSlice> _mtlResolveSlices;
	};


	#pragma mark -
	#pragma mark MVKCmdCopyBuffer

	/** Vulkan command to copy buffer regions. */
	class MVKCmdCopyBuffer : public MVKCommand {

	public:
	void setContent(VkBuffer srcBuffer,
	VkBuffer destBuffer,
	uint32_t regionCount,
	const VkBufferCopy* pRegions);

	void encode(MVKCommandEncoder* cmdEncoder) override;

	MVKCmdCopyBuffer(MVKCommandTypePool<MVKCmdCopyBuffer>* pool) :
	MVKCommand::MVKCommand((MVKCommandTypePool<MVKCommand>*)pool) {}

	protected:

	MVKBuffer* _srcBuffer;
	MVKBuffer* _dstBuffer;
	std::vector<VkBufferCopy> _mtlBuffCopyRegions;
	};


	#pragma mark -
	#pragma mark MVKCmdBufferImageCopy

	/** Command to copy either from a buffer to an image, or from an image to a buffer. */
	class MVKCmdBufferImageCopy : public MVKCommand {

	public:
	void setContent(VkBuffer buffer,
	VkImage image,
	VkImageLayout imageLayout,
	uint32_t regionCount,
	const VkBufferImageCopy* pRegions,
	bool toImage);

	void encode(MVKCommandEncoder* cmdEncoder) override;

	MVKCmdBufferImageCopy(MVKCommandTypePool<MVKCmdBufferImageCopy>* pool) :
	MVKCommand::MVKCommand((MVKCommandTypePool<MVKCommand>*)pool) {}

	protected:
	MVKBuffer* _buffer;
	MVKImage* _image;
	VkImageLayout _imageLayout;
	std::vector<VkBufferImageCopy> _mtlBuffImgCopyRegions;
	bool _toImage = false;
	};


	#pragma mark -
	#pragma mark MVKCmdClearAttachments

	/** Vulkan command to clear attachment regions. */
	class MVKCmdClearAttachments : public MVKCommand {

	public:
	void setContent(uint32_t attachmentCount,
	const VkClearAttachment* pAttachments,
	uint32_t rectCount,
	const VkClearRect* pRects);

	void encode(MVKCommandEncoder* cmdEncoder) override;

	MVKCmdClearAttachments(MVKCommandTypePool<MVKCmdClearAttachments>* pool) :
	MVKCommand::MVKCommand((MVKCommandTypePool<MVKCommand>*)pool) {}

	protected:
	void populateVertices(float attWidth, float attHeight);
	void populateVertices(VkClearRect& clearRect, float attWidth, float attHeight);

	std::vector<VkClearRect> _clearRects;
	std::vector<simd::float4> _vertices;
	simd::float4 _clearColors[kMVKAttachmentFormatCount];
	VkClearValue _vkClearValues[kMVKAttachmentFormatCount];
	MVKRPSKeyClearAtt _rpsKey;
	uint32_t _mtlStencilValue;
	bool _isClearingDepth;
	bool _isClearingStencil;
	};


	#pragma mark -
	#pragma mark MVKCmdClearImage

	/** Vulkan command to clear an image. */
	class MVKCmdClearImage : public MVKCommand {

	public:
	void setContent(VkImage image,
	VkImageLayout imageLayout,
	const VkClearValue& clearValue,
	uint32_t rangeCount,
	const VkImageSubresourceRange* pRanges,
	bool isDepthStencilClear);

	void encode(MVKCommandEncoder* cmdEncoder) override;

	MVKCmdClearImage(MVKCommandTypePool<MVKCmdClearImage>* pool) :
	MVKCommand::MVKCommand((MVKCommandTypePool<MVKCommand>*)pool) {}

	protected:
	uint32_t populateMetalCopyRegions(const VkImageBlit* pRegion, uint32_t cpyRgnIdx);
	uint32_t populateMetalBlitRenders(const VkImageBlit* pRegion, uint32_t rendRgnIdx);
	void populateVertices(MVKVertexPosTex* vertices, const VkImageBlit* pRegion);

	MVKImage* _image;
	VkImageLayout _imgLayout;
	std::vector<VkImageSubresourceRange> _subresourceRanges;
	MTLClearColor _mtlColorClearValue;
	double _mtlDepthClearValue;
	uint32_t _mtlStencilClearValue;
	bool _isDepthStencilClear;
	};


	#pragma mark -
	#pragma mark MVKCmdFillBuffer

	/** Vulkan command to fill a buffer. */
	class MVKCmdFillBuffer : public MVKCommand {

	public:
	void setContent(VkBuffer dstBuffer, VkDeviceSize dstOffset, VkDeviceSize size, uint32_t data);

	void encode(MVKCommandEncoder* cmdEncoder) override;

	MVKCmdFillBuffer(MVKCommandTypePool<MVKCmdFillBuffer>* pool) :
	MVKCommand::MVKCommand((MVKCommandTypePool<MVKCommand>*)pool) {}

	protected:
	MVKBuffer* _dstBuffer;
	VkDeviceSize _dstOffset;
	VkDeviceSize _size;
	uint32_t _dataValue;
	};


	#pragma mark -
	#pragma mark MVKCmdUpdateBuffer

	/** Vulkan command to update the contents of a buffer. */
	class MVKCmdUpdateBuffer : public MVKCommand {

	public:
	void setContent(VkBuffer dstBuffer,
	VkDeviceSize dstOffset,
	VkDeviceSize dataSize,
	const void* pData,
	bool useDataCache);

	void encode(MVKCommandEncoder* cmdEncoder) override;

	MVKCmdUpdateBuffer(MVKCommandTypePool<MVKCmdUpdateBuffer>* pool) :
	MVKCommand::MVKCommand((MVKCommandTypePool<MVKCommand>*)pool) {}

	protected:
	MVKBuffer* _dstBuffer;
	VkDeviceSize _dstOffset;
	VkDeviceSize _dataSize;
	std::vector<uint8_t> _srcDataCache;
	};


	#pragma mark -
	#pragma mark Command creation functions

	/** Adds a copy image command to the specified command buffer. */
	void mvkCmdCopyImage(MVKCommandBuffer* cmdBuff,
	VkImage srcImage,
	VkImageLayout srcImageLayout,
	VkImage dstImage,
	VkImageLayout dstImageLayout,
	uint32_t regionCount,
	const VkImageCopy* pRegions);

	/** Adds a BLIT image command to the specified command buffer. */
	void mvkCmdBlitImage(MVKCommandBuffer* cmdBuff,
	VkImage srcImage,
	VkImageLayout srcImageLayout,
	VkImage dstImage,
	VkImageLayout dstImageLayout,
	uint32_t regionCount,
	const VkImageBlit* pRegions,
	VkFilter filter);

	/** Adds a resolve image command to the specified command buffer. */
	void mvkCmdResolveImage(MVKCommandBuffer* cmdBuff,
	VkImage srcImage,
	VkImageLayout srcImageLayout,
	VkImage dstImage,
	VkImageLayout dstImageLayout,
	uint32_t regionCount,
	const VkImageResolve* pRegions);

	/** Adds a copy buffer command to the specified command buffer. */
	void mvkCmdCopyBuffer(MVKCommandBuffer* cmdBuff,
	VkBuffer srcBuffer,
	VkBuffer dstBuffer,
	uint32_t regionCount,
	const VkBufferCopy* pRegions);

	/** Adds a copy buffer to image command to the specified command buffer. */
	void mvkCmdCopyBufferToImage(MVKCommandBuffer* cmdBuff,
	VkBuffer srcBuffer,
	VkImage dstImage,
	VkImageLayout dstImageLayout,
	uint32_t regionCount,
	const VkBufferImageCopy* pRegions);

	/** Adds a copy buffer to image command to the specified command buffer. */
	void mvkCmdCopyImageToBuffer(MVKCommandBuffer* cmdBuff,
	VkImage srcImage,
	VkImageLayout srcImageLayout,
	VkBuffer dstBuffer,
	uint32_t regionCount,
	const VkBufferImageCopy* pRegions);

	/** Adds a clear attachments command to the specified command buffer. */
	void mvkCmdClearAttachments(MVKCommandBuffer* cmdBuff,
	uint32_t attachmentCount,
	const VkClearAttachment* pAttachments,
	uint32_t rectCount,
	const VkClearRect* pRects);

	/** Adds a clear color image command to the specified command buffer. */
	void mvkCmdClearColorImage(MVKCommandBuffer* cmdBuff,
	VkImage image,
	VkImageLayout imageLayout,
	const VkClearColorValue* pColor,
	uint32_t rangeCount,
	const VkImageSubresourceRange* pRanges);

	/** Adds a clear depth stencil image command to the specified command buffer. */
	void mvkCmdClearDepthStencilImage(MVKCommandBuffer* cmdBuff,
	VkImage image,
	VkImageLayout imageLayout,
	const VkClearDepthStencilValue* pDepthStencil,
	uint32_t rangeCount,
	const VkImageSubresourceRange* pRanges);

	/** Adds a fill buffer command to the specified command buffer. */
	void mvkCmdFillBuffer(MVKCommandBuffer* cmdBuff,
	VkBuffer dstBuffer,
	VkDeviceSize dstOffset,
	VkDeviceSize size,
	uint32_t data);

	/** Adds a buffer update command to the specified command buffer. */
	void mvkCmdUpdateBuffer(MVKCommandBuffer* cmdBuff,
	VkBuffer dstBuffer,
	VkDeviceSize dstOffset,
	VkDeviceSize dataSize,
	const void* pData);