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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"
#include "System/Math.hpp"
#include <climits>
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,
};
}
} // anonymous namespace
namespace vk {
Identifier::Identifier(const Image *image, VkImageViewType type, VkFormat fmt, VkComponentMapping mapping)
{
imageViewType = type;
format = Format::mapTo8bit(fmt);
r = mapping.r;
g = mapping.g;
b = mapping.b;
a = mapping.a;
}
Identifier::Identifier(VkFormat fmt)
{
static_assert(vk::VK_IMAGE_VIEW_TYPE_END_RANGE == 6, "VkImageViewType does not allow using 7 to indicate buffer view");
imageViewType = 7; // Still fits in 3-bit field
format = Format::mapTo8bit(fmt);
}
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)
, id(image, viewType, format.getAspectFormat(subresourceRange.aspectMask), components)
{
}
size_t ImageView::ComputeRequiredAllocationSize(const VkImageViewCreateInfo *pCreateInfo)
{
return 0;
}
void ImageView::destroy(const VkAllocationCallbacks *pAllocator)
{
}
// Vulkan 1.2 Table 8. Image and image view parameter compatibility requirements
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.
ASSERT(imageTypesMatch(image->getImageType()));
ASSERT(format.isCompatible(image->getFormat()));
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.
ASSERT(imageTypesMatch(image->getImageType()));
ASSERT(format.isCompatible(image->getFormat()));
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::clearWithLayerMask(const VkClearValue &clearValue, VkImageAspectFlags aspectMask, const VkRect2D &renderArea, uint32_t layerMask)
{
while(layerMask)
{
uint32_t layer = sw::log2i(layerMask);
layerMask &= ~(1 << layer);
VkClearRect r = { renderArea, layer, 1 };
r.baseArrayLayer = layer;
clear(clearValue, aspectMask, r);
}
}
void ImageView::resolve(ImageView *resolveAttachment, int layer)
{
if((subresourceRange.levelCount != 1) || (resolveAttachment->subresourceRange.levelCount != 1))
{
UNIMPLEMENTED("b/148242443: levelCount != 1"); // FIXME(b/148242443)
}
VkImageResolve 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->resolveTo(resolveAttachment->image, region);
}
void ImageView::resolve(ImageView *resolveAttachment)
{
if((subresourceRange.levelCount != 1) || (resolveAttachment->subresourceRange.levelCount != 1))
{
UNIMPLEMENTED("b/148242443: levelCount != 1"); // FIXME(b/148242443)
}
VkImageResolve 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->resolveTo(resolveAttachment->image, region);
}
void ImageView::resolveWithLayerMask(ImageView *resolveAttachment, uint32_t layerMask)
{
while(layerMask)
{
int layer = sw::log2i(layerMask);
layerMask &= ~(1 << layer);
resolve(resolveAttachment, layer);
}
}
const Image *ImageView::getImage(Usage usage) const
{
switch(usage)
{
case RAW:
return image;
case SAMPLING:
return image->getSampledImage(format);
default:
UNREACHABLE("usage %d", int(usage));
return nullptr;
}
}
Format ImageView::getFormat(Usage usage) const
{
Format imageFormat = ((usage == RAW) || (getImage(usage) == image)) ? format : getImage(usage)->getFormat();
return imageFormat.getAspectFormat(subresourceRange.aspectMask);
}
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::getMipLevelSize(VkImageAspectFlagBits aspect, uint32_t mipLevel, Usage usage) const
{
return getImage(usage)->getMipLevelSize(aspect, subresourceRange.baseMipLevel + mipLevel);
}
int ImageView::layerPitchBytes(VkImageAspectFlagBits aspect, Usage usage) const
{
return static_cast<int>(getImage(usage)->getLayerSize(aspect));
}
VkExtent2D ImageView::getMipLevelExtent(uint32_t mipLevel) const
{
VkExtent3D extent = image->getMipLevelExtent(static_cast<VkImageAspectFlagBits>(subresourceRange.aspectMask),
subresourceRange.baseMipLevel + mipLevel);
return { extent.width, extent.height };
}
int ImageView::getDepthOrLayerCount(uint32_t mipLevel) const
{
VkExtent3D extent = image->getMipLevelExtent(static_cast<VkImageAspectFlagBits>(subresourceRange.aspectMask),
subresourceRange.baseMipLevel + mipLevel);
int layers = subresourceRange.layerCount;
int depthOrLayers = layers > 1 ? layers : extent.depth;
// For cube images the number of whole cubes is returned
if(viewType == VK_IMAGE_VIEW_TYPE_CUBE ||
viewType == VK_IMAGE_VIEW_TYPE_CUBE_ARRAY)
{
depthOrLayers /= 6;
}
return depthOrLayers;
}
void *ImageView::getOffsetPointer(const VkOffset3D &offset, VkImageAspectFlagBits aspect, uint32_t mipLevel, uint32_t layer, Usage usage) const
{
ASSERT(mipLevel < subresourceRange.levelCount);
VkImageSubresource imageSubresource = {
static_cast<VkImageAspectFlags>(aspect),
subresourceRange.baseMipLevel + mipLevel,
subresourceRange.baseArrayLayer + layer,
};
return getImage(usage)->getTexelPointer(offset, imageSubresource);
}
} // namespace vk