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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 "VkFramebuffer.hpp"
#include "VkImageView.hpp"
#include "VkRenderPass.hpp"
#include <algorithm>
#include <memory.h>
namespace vk
{
Framebuffer::Framebuffer(const VkFramebufferCreateInfo* pCreateInfo, void* mem) :
attachmentCount(pCreateInfo->attachmentCount),
attachments(reinterpret_cast<ImageView**>(mem))
{
for(uint32_t i = 0; i < attachmentCount; i++)
{
attachments[i] = vk::Cast(pCreateInfo->pAttachments[i]);
}
}
void Framebuffer::destroy(const VkAllocationCallbacks* pAllocator)
{
vk::deallocate(attachments, pAllocator);
}
void Framebuffer::clear(const RenderPass* renderPass, uint32_t clearValueCount, const VkClearValue* pClearValues, const VkRect2D& renderArea)
{
ASSERT(attachmentCount == renderPass->getAttachmentCount());
const uint32_t count = std::min(clearValueCount, attachmentCount);
for (uint32_t i = 0; i < count; i++)
{
const VkAttachmentDescription attachment = renderPass->getAttachment(i);
VkImageAspectFlags aspectMask = Format(attachment.format).getAspects();
if (attachment.loadOp != VK_ATTACHMENT_LOAD_OP_CLEAR)
aspectMask &= VK_IMAGE_ASPECT_STENCIL_BIT;
if (attachment.stencilLoadOp != VK_ATTACHMENT_LOAD_OP_CLEAR)
aspectMask &= ~VK_IMAGE_ASPECT_STENCIL_BIT;
if (!aspectMask || !renderPass->isAttachmentUsed(i))
{
continue;
}
if (renderPass->isMultiView())
{
attachments[i]->clearWithLayerMask(pClearValues[i], aspectMask, renderArea,
renderPass->getAttachmentViewMask(i));
}
else
{
attachments[i]->clear(pClearValues[i], aspectMask, renderArea);
}
}
}
void Framebuffer::clearAttachment(const RenderPass* renderPass, uint32_t subpassIndex, const VkClearAttachment& attachment, const VkClearRect& rect)
{
VkSubpassDescription subpass = renderPass->getSubpass(subpassIndex);
if (attachment.aspectMask == VK_IMAGE_ASPECT_COLOR_BIT)
{
ASSERT(attachment.colorAttachment < subpass.colorAttachmentCount);
uint32_t attachmentIndex = subpass.pColorAttachments[attachment.colorAttachment].attachment;
if (attachmentIndex != VK_ATTACHMENT_UNUSED)
{
ASSERT(attachmentIndex < attachmentCount);
ImageView *imageView = attachments[attachmentIndex];
if (renderPass->isMultiView())
{
imageView->clearWithLayerMask(attachment.clearValue, attachment.aspectMask, rect.rect,
renderPass->getViewMask(subpassIndex));
}
else
{
imageView->clear(attachment.clearValue, attachment.aspectMask, rect);
}
}
}
else if (attachment.aspectMask & (VK_IMAGE_ASPECT_DEPTH_BIT | VK_IMAGE_ASPECT_STENCIL_BIT))
{
ASSERT(subpass.pDepthStencilAttachment->attachment < attachmentCount);
ImageView *imageView = attachments[subpass.pDepthStencilAttachment->attachment];
if (renderPass->isMultiView())
{
imageView->clearWithLayerMask(attachment.clearValue, attachment.aspectMask, rect.rect,
renderPass->getViewMask(subpassIndex));
}
else
{
imageView->clear(attachment.clearValue, attachment.aspectMask, rect);
}
}
}
ImageView *Framebuffer::getAttachment(uint32_t index) const
{
return attachments[index];
}
void Framebuffer::resolve(const RenderPass* renderPass, uint32_t subpassIndex)
{
auto const& subpass = renderPass->getSubpass(subpassIndex);
if(subpass.pResolveAttachments)
{
for(uint32_t i = 0; i < subpass.colorAttachmentCount; i++)
{
uint32_t resolveAttachment = subpass.pResolveAttachments[i].attachment;
if(resolveAttachment != VK_ATTACHMENT_UNUSED)
{
ImageView *imageView = attachments[subpass.pColorAttachments[i].attachment];
if (renderPass->isMultiView())
{
imageView->resolveWithLayerMask(attachments[resolveAttachment],
renderPass->getViewMask(subpassIndex));
}
else
{
imageView->resolve(attachments[resolveAttachment]);
}
}
}
}
}
size_t Framebuffer::ComputeRequiredAllocationSize(const VkFramebufferCreateInfo* pCreateInfo)
{
return pCreateInfo->attachmentCount * sizeof(void*);
}
} // namespace vk