src/Vulkan/VkImageView.cpp - SwiftShader - Git at Google

 // Copyright 2018 The SwiftShader Authors. All Rights Reserved.
 //
 // 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.

 #include "VkImageView.hpp"
 #include "VkImage.hpp"

 namespace
 {
 	VkComponentMapping ResolveComponentMapping(VkComponentMapping m, vk::Format format)
 	{
 		m = vk::ResolveIdentityMapping(m);

 		// Replace non-present components with zero/one swizzles so that the sampler
 		// will give us correct interactions between channel replacement and texel replacement,
 		// where we've had to invent new channels behind the app's back (eg transparent decompression
 		// of ETC2 RGB -> BGRA8)
 		VkComponentSwizzle table[] = {
 			VK_COMPONENT_SWIZZLE_IDENTITY,
 			VK_COMPONENT_SWIZZLE_ZERO,
 			VK_COMPONENT_SWIZZLE_ONE,
 			VK_COMPONENT_SWIZZLE_R,
 			format.componentCount() < 2 ? VK_COMPONENT_SWIZZLE_ZERO : VK_COMPONENT_SWIZZLE_G,
 			format.componentCount() < 3 ? VK_COMPONENT_SWIZZLE_ZERO : VK_COMPONENT_SWIZZLE_B,
 			format.componentCount() < 4 ? VK_COMPONENT_SWIZZLE_ONE : VK_COMPONENT_SWIZZLE_A,
 		};

 		return {table[m.r], table[m.g], table[m.b], table[m.a]};
 	}

 	VkImageSubresourceRange ResolveRemainingLevelsLayers(VkImageSubresourceRange range, const vk::Image *image)
 	{
 		return {
 			range.aspectMask,
 			range.baseMipLevel,
 			(range.levelCount == VK_REMAINING_MIP_LEVELS) ? (image->getMipLevels() - range.baseMipLevel) : range.levelCount,
 			range.baseArrayLayer,
 			(range.layerCount == VK_REMAINING_ARRAY_LAYERS) ? (image->getArrayLayers() - range.baseArrayLayer) : range.layerCount,
 		};
 	}
 }

 namespace vk
 {

 std::atomic<uint32_t> ImageView::nextID(1);

 ImageView::ImageView(const VkImageViewCreateInfo* pCreateInfo, void* mem, const vk::SamplerYcbcrConversion *ycbcrConversion) :
 	image(vk::Cast(pCreateInfo->image)), viewType(pCreateInfo->viewType), format(pCreateInfo->format),
 	components(ResolveComponentMapping(pCreateInfo->components, format)),
 	subresourceRange(ResolveRemainingLevelsLayers(pCreateInfo->subresourceRange, image)),
 	ycbcrConversion(ycbcrConversion)
 {
 }

 size_t ImageView::ComputeRequiredAllocationSize(const VkImageViewCreateInfo* pCreateInfo)
 {
 	return 0;
 }

 void ImageView::destroy(const VkAllocationCallbacks* pAllocator)
 {
 }

 bool ImageView::imageTypesMatch(VkImageType imageType) const
 {
 	uint32_t imageArrayLayers = image->getArrayLayers();

 	switch(viewType)
 	{
 	case VK_IMAGE_VIEW_TYPE_1D:
 		return (imageType == VK_IMAGE_TYPE_1D) &&
 		       (subresourceRange.layerCount == 1);
 	case VK_IMAGE_VIEW_TYPE_1D_ARRAY:
 		return imageType == VK_IMAGE_TYPE_1D;
 	case VK_IMAGE_VIEW_TYPE_2D:
 		return ((imageType == VK_IMAGE_TYPE_2D) ||
 		        ((imageType == VK_IMAGE_TYPE_3D) &&
 		         (imageArrayLayers == 1))) &&
 		       (subresourceRange.layerCount == 1);
 	case VK_IMAGE_VIEW_TYPE_2D_ARRAY:
 		return (imageType == VK_IMAGE_TYPE_2D) ||
 		       ((imageType == VK_IMAGE_TYPE_3D) &&
 		        (imageArrayLayers == 1));
 	case VK_IMAGE_VIEW_TYPE_CUBE:
 		return image->isCube() &&
 		       (imageArrayLayers >= subresourceRange.layerCount) &&
 		       (subresourceRange.layerCount == 6);
 	case VK_IMAGE_VIEW_TYPE_CUBE_ARRAY:
 		return image->isCube() &&
 		       (imageArrayLayers >= subresourceRange.layerCount) &&
 		       (subresourceRange.layerCount >= 6);
 	case VK_IMAGE_VIEW_TYPE_3D:
 		return (imageType == VK_IMAGE_TYPE_3D) &&
 		       (imageArrayLayers == 1) &&
 		       (subresourceRange.layerCount == 1);
 	default:
 		UNREACHABLE("Unexpected viewType %d", (int)viewType);
 	}

 	return false;
 }

 void ImageView::clear(const VkClearValue& clearValue, const VkImageAspectFlags aspectMask, const VkRect2D& renderArea)
 {
 	// Note: clearing ignores swizzling, so components is ignored.

 	if(!imageTypesMatch(image->getImageType()))
 	{
 		UNIMPLEMENTED("imageTypesMatch");
 	}

 	if(!format.isCompatible(image->getFormat()))
 	{
 		UNIMPLEMENTED("incompatible formats");
 	}

 	VkImageSubresourceRange sr = subresourceRange;
 	sr.aspectMask = aspectMask;
 	image->clear(clearValue, format, renderArea, sr);
 }

 void ImageView::clear(const VkClearValue& clearValue, const VkImageAspectFlags aspectMask, const VkClearRect& renderArea)
 {
 	// Note: clearing ignores swizzling, so components is ignored.

 	if(!imageTypesMatch(image->getImageType()))
 	{
 		UNIMPLEMENTED("imageTypesMatch");
 	}

 	if(!format.isCompatible(image->getFormat()))
 	{
 		UNIMPLEMENTED("incompatible formats");
 	}

 	VkImageSubresourceRange sr;
 	sr.aspectMask = aspectMask;
 	sr.baseMipLevel = subresourceRange.baseMipLevel;
 	sr.levelCount = subresourceRange.levelCount;
 	sr.baseArrayLayer = renderArea.baseArrayLayer + subresourceRange.baseArrayLayer;
 	sr.layerCount = renderArea.layerCount;

 	image->clear(clearValue, format, renderArea.rect, sr);
 }

 void ImageView::resolve(ImageView* resolveAttachment, int layer)
 {
 	if((subresourceRange.levelCount != 1) || (resolveAttachment->subresourceRange.levelCount != 1))
 	{
 		UNIMPLEMENTED("levelCount");
 	}

 	VkImageCopy region;
 	region.srcSubresource =
 	{
 		subresourceRange.aspectMask,
 		subresourceRange.baseMipLevel,
 		subresourceRange.baseArrayLayer + layer,
 		1
 	};
 	region.srcOffset = { 0, 0, 0 };
 	region.dstSubresource =
 	{
 		resolveAttachment->subresourceRange.aspectMask,
 		resolveAttachment->subresourceRange.baseMipLevel,
 		resolveAttachment->subresourceRange.baseArrayLayer + layer,
 		1
 	};
 	region.dstOffset = { 0, 0, 0 };
 	region.extent = image->getMipLevelExtent(static_cast<VkImageAspectFlagBits>(subresourceRange.aspectMask),
 	                                         subresourceRange.baseMipLevel);

 	image->copyTo(resolveAttachment->image, region);
 }

 void ImageView::resolve(ImageView* resolveAttachment)
 {
 	if((subresourceRange.levelCount != 1) || (resolveAttachment->subresourceRange.levelCount != 1))
 	{
 		UNIMPLEMENTED("levelCount");
 	}

 	VkImageCopy region;
 	region.srcSubresource =
 	{
 		subresourceRange.aspectMask,
 		subresourceRange.baseMipLevel,
 		subresourceRange.baseArrayLayer,
 		subresourceRange.layerCount
 	};
 	region.srcOffset = { 0, 0, 0 };
 	region.dstSubresource =
 	{
 		resolveAttachment->subresourceRange.aspectMask,
 		resolveAttachment->subresourceRange.baseMipLevel,
 		resolveAttachment->subresourceRange.baseArrayLayer,
 		resolveAttachment->subresourceRange.layerCount
 	};
 	region.dstOffset = { 0, 0, 0 };
 	region.extent = image->getMipLevelExtent(static_cast<VkImageAspectFlagBits>(subresourceRange.aspectMask),
 	                                         subresourceRange.baseMipLevel);

 	image->copyTo(resolveAttachment->image, region);
 }

 const Image* ImageView::getImage(Usage usage) const
 {
 	switch(usage)
 	{
 	case RAW:
 		return image;
 	case SAMPLING:
 		return image->getSampledImage(format);
 	default:
 		UNIMPLEMENTED("usage %d", int(usage));
 		return nullptr;
 	}
 }

 Format ImageView::getFormat(Usage usage) const
 {
 	return ((usage == RAW) || (getImage(usage) == image)) ? format : getImage(usage)->getFormat();
 }

 int ImageView::rowPitchBytes(VkImageAspectFlagBits aspect, uint32_t mipLevel, Usage usage) const
 {
 	return getImage(usage)->rowPitchBytes(aspect, subresourceRange.baseMipLevel + mipLevel);
 }

 int ImageView::slicePitchBytes(VkImageAspectFlagBits aspect, uint32_t mipLevel, Usage usage) const
 {
 	return getImage(usage)->slicePitchBytes(aspect, subresourceRange.baseMipLevel + mipLevel);
 }

 int ImageView::layerPitchBytes(VkImageAspectFlagBits aspect, Usage usage) const
 {
 	return static_cast<int>(getImage(usage)->getLayerSize(aspect));
 }

 VkExtent3D ImageView::getMipLevelExtent(uint32_t mipLevel) const
 {
 	return image->getMipLevelExtent(static_cast<VkImageAspectFlagBits>(subresourceRange.aspectMask),
 	                                subresourceRange.baseMipLevel + mipLevel);
 }

 void *ImageView::getOffsetPointer(const VkOffset3D& offset, VkImageAspectFlagBits aspect, uint32_t mipLevel, uint32_t layer, Usage usage) const
 {
 	ASSERT(mipLevel < subresourceRange.levelCount);

 	VkImageSubresourceLayers imageSubresourceLayers =
 	{
 		static_cast<VkImageAspectFlags>(aspect),
 		subresourceRange.baseMipLevel + mipLevel,
 		subresourceRange.baseArrayLayer + layer,
 		subresourceRange.layerCount
 	};

 	return getImage(usage)->getTexelPointer(offset, imageSubresourceLayers);
 }

 }
	// Copyright 2018 The SwiftShader Authors. All Rights Reserved.
	//
	// 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.

	#include "VkImageView.hpp"
	#include "VkImage.hpp"

	namespace
	{
	VkComponentMapping ResolveComponentMapping(VkComponentMapping m, vk::Format format)
	{
	m = vk::ResolveIdentityMapping(m);

	// Replace non-present components with zero/one swizzles so that the sampler
	// will give us correct interactions between channel replacement and texel replacement,
	// where we've had to invent new channels behind the app's back (eg transparent decompression
	// of ETC2 RGB -> BGRA8)
	VkComponentSwizzle table[] = {
	VK_COMPONENT_SWIZZLE_IDENTITY,
	VK_COMPONENT_SWIZZLE_ZERO,
	VK_COMPONENT_SWIZZLE_ONE,
	VK_COMPONENT_SWIZZLE_R,
	format.componentCount() < 2 ? VK_COMPONENT_SWIZZLE_ZERO : VK_COMPONENT_SWIZZLE_G,
	format.componentCount() < 3 ? VK_COMPONENT_SWIZZLE_ZERO : VK_COMPONENT_SWIZZLE_B,
	format.componentCount() < 4 ? VK_COMPONENT_SWIZZLE_ONE : VK_COMPONENT_SWIZZLE_A,
	};

	return {table[m.r], table[m.g], table[m.b], table[m.a]};
	}

	VkImageSubresourceRange ResolveRemainingLevelsLayers(VkImageSubresourceRange range, const vk::Image *image)
	{
	return {
	range.aspectMask,
	range.baseMipLevel,
	(range.levelCount == VK_REMAINING_MIP_LEVELS) ? (image->getMipLevels() - range.baseMipLevel) : range.levelCount,
	range.baseArrayLayer,
	(range.layerCount == VK_REMAINING_ARRAY_LAYERS) ? (image->getArrayLayers() - range.baseArrayLayer) : range.layerCount,
	};
	}
	}

	namespace vk
	{

	std::atomic<uint32_t> ImageView::nextID(1);

	ImageView::ImageView(const VkImageViewCreateInfo* pCreateInfo, void* mem, const vk::SamplerYcbcrConversion *ycbcrConversion) :
	image(vk::Cast(pCreateInfo->image)), viewType(pCreateInfo->viewType), format(pCreateInfo->format),
	components(ResolveComponentMapping(pCreateInfo->components, format)),
	subresourceRange(ResolveRemainingLevelsLayers(pCreateInfo->subresourceRange, image)),
	ycbcrConversion(ycbcrConversion)
	{
	}

	size_t ImageView::ComputeRequiredAllocationSize(const VkImageViewCreateInfo* pCreateInfo)
	{
	return 0;
	}

	void ImageView::destroy(const VkAllocationCallbacks* pAllocator)
	{
	}

	bool ImageView::imageTypesMatch(VkImageType imageType) const
	{
	uint32_t imageArrayLayers = image->getArrayLayers();

	switch(viewType)
	{
	case VK_IMAGE_VIEW_TYPE_1D:
	return (imageType == VK_IMAGE_TYPE_1D) &&
	(subresourceRange.layerCount == 1);
	case VK_IMAGE_VIEW_TYPE_1D_ARRAY:
	return imageType == VK_IMAGE_TYPE_1D;
	case VK_IMAGE_VIEW_TYPE_2D:
	return ((imageType == VK_IMAGE_TYPE_2D) \|\|
	((imageType == VK_IMAGE_TYPE_3D) &&
	(imageArrayLayers == 1))) &&
	(subresourceRange.layerCount == 1);
	case VK_IMAGE_VIEW_TYPE_2D_ARRAY:
	return (imageType == VK_IMAGE_TYPE_2D) \|\|
	((imageType == VK_IMAGE_TYPE_3D) &&
	(imageArrayLayers == 1));
	case VK_IMAGE_VIEW_TYPE_CUBE:
	return image->isCube() &&
	(imageArrayLayers >= subresourceRange.layerCount) &&
	(subresourceRange.layerCount == 6);
	case VK_IMAGE_VIEW_TYPE_CUBE_ARRAY:
	return image->isCube() &&
	(imageArrayLayers >= subresourceRange.layerCount) &&
	(subresourceRange.layerCount >= 6);
	case VK_IMAGE_VIEW_TYPE_3D:
	return (imageType == VK_IMAGE_TYPE_3D) &&
	(imageArrayLayers == 1) &&
	(subresourceRange.layerCount == 1);
	default:
	UNREACHABLE("Unexpected viewType %d", (int)viewType);
	}

	return false;
	}

	void ImageView::clear(const VkClearValue& clearValue, const VkImageAspectFlags aspectMask, const VkRect2D& renderArea)
	{
	// Note: clearing ignores swizzling, so components is ignored.

	if(!imageTypesMatch(image->getImageType()))
	{
	UNIMPLEMENTED("imageTypesMatch");
	}

	if(!format.isCompatible(image->getFormat()))
	{
	UNIMPLEMENTED("incompatible formats");
	}

	VkImageSubresourceRange sr = subresourceRange;
	sr.aspectMask = aspectMask;
	image->clear(clearValue, format, renderArea, sr);
	}

	void ImageView::clear(const VkClearValue& clearValue, const VkImageAspectFlags aspectMask, const VkClearRect& renderArea)
	{
	// Note: clearing ignores swizzling, so components is ignored.

	if(!imageTypesMatch(image->getImageType()))
	{
	UNIMPLEMENTED("imageTypesMatch");
	}

	if(!format.isCompatible(image->getFormat()))
	{
	UNIMPLEMENTED("incompatible formats");
	}

	VkImageSubresourceRange sr;
	sr.aspectMask = aspectMask;
	sr.baseMipLevel = subresourceRange.baseMipLevel;
	sr.levelCount = subresourceRange.levelCount;
	sr.baseArrayLayer = renderArea.baseArrayLayer + subresourceRange.baseArrayLayer;
	sr.layerCount = renderArea.layerCount;

	image->clear(clearValue, format, renderArea.rect, sr);
	}

	void ImageView::resolve(ImageView* resolveAttachment, int layer)
	{
	if((subresourceRange.levelCount != 1) \|\| (resolveAttachment->subresourceRange.levelCount != 1))
	{
	UNIMPLEMENTED("levelCount");
	}

	VkImageCopy region;
	region.srcSubresource =
	{
	subresourceRange.aspectMask,
	subresourceRange.baseMipLevel,
	subresourceRange.baseArrayLayer + layer,
	1
	};
	region.srcOffset = { 0, 0, 0 };
	region.dstSubresource =
	{
	resolveAttachment->subresourceRange.aspectMask,
	resolveAttachment->subresourceRange.baseMipLevel,
	resolveAttachment->subresourceRange.baseArrayLayer + layer,
	1
	};
	region.dstOffset = { 0, 0, 0 };
	region.extent = image->getMipLevelExtent(static_cast<VkImageAspectFlagBits>(subresourceRange.aspectMask),
	subresourceRange.baseMipLevel);

	image->copyTo(resolveAttachment->image, region);
	}

	void ImageView::resolve(ImageView* resolveAttachment)
	{
	if((subresourceRange.levelCount != 1) \|\| (resolveAttachment->subresourceRange.levelCount != 1))
	{
	UNIMPLEMENTED("levelCount");
	}

	VkImageCopy region;
	region.srcSubresource =
	{
	subresourceRange.aspectMask,
	subresourceRange.baseMipLevel,
	subresourceRange.baseArrayLayer,
	subresourceRange.layerCount
	};
	region.srcOffset = { 0, 0, 0 };
	region.dstSubresource =
	{
	resolveAttachment->subresourceRange.aspectMask,
	resolveAttachment->subresourceRange.baseMipLevel,
	resolveAttachment->subresourceRange.baseArrayLayer,
	resolveAttachment->subresourceRange.layerCount
	};
	region.dstOffset = { 0, 0, 0 };
	region.extent = image->getMipLevelExtent(static_cast<VkImageAspectFlagBits>(subresourceRange.aspectMask),
	subresourceRange.baseMipLevel);

	image->copyTo(resolveAttachment->image, region);
	}

	const Image* ImageView::getImage(Usage usage) const
	{
	switch(usage)
	{
	case RAW:
	return image;
	case SAMPLING:
	return image->getSampledImage(format);
	default:
	UNIMPLEMENTED("usage %d", int(usage));
	return nullptr;
	}
	}

	Format ImageView::getFormat(Usage usage) const
	{
	return ((usage == RAW) \|\| (getImage(usage) == image)) ? format : getImage(usage)->getFormat();
	}

	int ImageView::rowPitchBytes(VkImageAspectFlagBits aspect, uint32_t mipLevel, Usage usage) const
	{
	return getImage(usage)->rowPitchBytes(aspect, subresourceRange.baseMipLevel + mipLevel);
	}

	int ImageView::slicePitchBytes(VkImageAspectFlagBits aspect, uint32_t mipLevel, Usage usage) const
	{
	return getImage(usage)->slicePitchBytes(aspect, subresourceRange.baseMipLevel + mipLevel);
	}

	int ImageView::layerPitchBytes(VkImageAspectFlagBits aspect, Usage usage) const
	{
	return static_cast<int>(getImage(usage)->getLayerSize(aspect));
	}

	VkExtent3D ImageView::getMipLevelExtent(uint32_t mipLevel) const
	{
	return image->getMipLevelExtent(static_cast<VkImageAspectFlagBits>(subresourceRange.aspectMask),
	subresourceRange.baseMipLevel + mipLevel);
	}

	void *ImageView::getOffsetPointer(const VkOffset3D& offset, VkImageAspectFlagBits aspect, uint32_t mipLevel, uint32_t layer, Usage usage) const
	{
	ASSERT(mipLevel < subresourceRange.levelCount);

	VkImageSubresourceLayers imageSubresourceLayers =
	{
	static_cast<VkImageAspectFlags>(aspect),
	subresourceRange.baseMipLevel + mipLevel,
	subresourceRange.baseArrayLayer + layer,
	subresourceRange.layerCount
	};

	return getImage(usage)->getTexelPointer(offset, imageSubresourceLayers);
	}

	}