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// 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 ResolveIdentityMapping(VkComponentMapping m)
{
return {
(m.r == VK_COMPONENT_SWIZZLE_IDENTITY) ? VK_COMPONENT_SWIZZLE_R : m.r,
(m.g == VK_COMPONENT_SWIZZLE_IDENTITY) ? VK_COMPONENT_SWIZZLE_G : m.g,
(m.b == VK_COMPONENT_SWIZZLE_IDENTITY) ? VK_COMPONENT_SWIZZLE_B : m.b,
(m.a == VK_COMPONENT_SWIZZLE_IDENTITY) ? VK_COMPONENT_SWIZZLE_A : m.a,
};
}
}
namespace vk
{
ImageView::ImageView(const VkImageViewCreateInfo* pCreateInfo, void* mem) :
image(Cast(pCreateInfo->image)), viewType(pCreateInfo->viewType), format(pCreateInfo->format),
components(ResolveIdentityMapping(pCreateInfo->components)), subresourceRange(pCreateInfo->subresourceRange)
{
}
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)
{
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(subresourceRange.baseMipLevel);
image->copyTo(*(resolveAttachment->image), region);
}
void *ImageView::getOffsetPointer(const VkOffset3D& offset, VkImageAspectFlagBits aspect, uint32_t mipLevel) const
{
ASSERT(mipLevel < subresourceRange.levelCount);
VkImageSubresourceLayers imageSubresourceLayers =
{
static_cast<VkImageAspectFlags>(aspect),
subresourceRange.baseMipLevel + mipLevel,
subresourceRange.baseArrayLayer,
subresourceRange.layerCount
};
return image->getTexelPointer(offset, imageSubresourceLayers);
}
}