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Improve format choice and move CDefaultSwapchainFramebuffers.h to nbl::video 
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6 files changed

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‎examples_tests‎

‎include/nbl/video/declarations.h‎

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#include "nbl/video/utilities/SPhysicalDeviceFilter.h"
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#include "nbl/video/utilities/CSimpleResizeSurface.h"
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#include "nbl/video/utilities/CSmoothResizeSurface.h"
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#include "nbl/video/utilities/CDefaultSwapchainFramebuffers.h"
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//VT
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//#include "nbl/video/CGPUMeshPackerV2.h"

‎include/nbl/video/utilities/CDefaultSwapchainFramebuffers.h‎

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// Copyright (C) 2023-2023 - DevSH Graphics Programming Sp. z O.O.
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// This file is part of the "Nabla Engine".
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// For conditions of distribution and use, see copyright notice in nabla.h
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#ifndef _NBL_VIDEO_C_DEFAULT_SWAPCHAIN_FRAMEBUFFERS_HPP_INCLUDED_
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#define _NBL_VIDEO_C_DEFAULT_SWAPCHAIN_FRAMEBUFFERS_HPP_INCLUDED_
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// Build on top of the previous one
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#include "nabla.h"
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namespace nbl::video
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{
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// Just a class to create a Default single Subpass Renderpass and hold framebuffers derived from swapchain images.
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// WARNING: It assumes the format won't change between swapchain recreates!
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class CDefaultSwapchainFramebuffers : public ISimpleManagedSurface::ISwapchainResources
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{
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public:
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inline CDefaultSwapchainFramebuffers(ILogicalDevice* device, const asset::E_FORMAT format, const IGPURenderpass::SCreationParams::SSubpassDependency* dependencies)
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{
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// If we create the framebuffers by default, we also need to default the renderpass (except dependencies)
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const IGPURenderpass::SCreationParams::SColorAttachmentDescription colorAttachments[] = {
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{{
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.format = format,
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.samples = IGPUImage::ESCF_1_BIT,
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.mayAlias = false,
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.loadOp = IGPURenderpass::LOAD_OP::CLEAR,
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.storeOp = IGPURenderpass::STORE_OP::STORE,
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.initialLayout = IGPUImage::LAYOUT::UNDEFINED, // because we clear we don't care about contents
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.finalLayout = IGPUImage::LAYOUT::PRESENT_SRC // transition to presentation right away so we can skip a barrier
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}},
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IGPURenderpass::SCreationParams::ColorAttachmentsEnd
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};
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IGPURenderpass::SCreationParams::SSubpassDescription subpasses[] = {
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{},
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IGPURenderpass::SCreationParams::SubpassesEnd
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};
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subpasses[0].colorAttachments[0] = {.render={.attachmentIndex=0,.layout=IGPUImage::LAYOUT::ATTACHMENT_OPTIMAL}};
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IGPURenderpass::SCreationParams params = {};
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params.colorAttachments = colorAttachments;
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params.subpasses = subpasses;
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params.dependencies = dependencies;
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m_renderpass = device->createRenderpass(params);
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}
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inline IGPURenderpass* getRenderpass() {return m_renderpass.get();}
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inline IGPUFramebuffer* getFrambuffer(const uint8_t imageIx)
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{
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if (imageIx<m_framebuffers.size())
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return m_framebuffers[imageIx].get();
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return nullptr;
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}
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protected:
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virtual inline void invalidate_impl()
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{
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std::fill(m_framebuffers.begin(),m_framebuffers.end(),nullptr);
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}
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// For creating extra per-image or swapchain resources you might need
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virtual inline bool onCreateSwapchain_impl(const uint8_t qFam)
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{
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auto device = const_cast<ILogicalDevice*>(m_renderpass->getOriginDevice());
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const auto swapchain = getSwapchain();
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const auto count = swapchain->getImageCount();
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const auto& sharedParams = swapchain->getCreationParameters().sharedParams;
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for (uint8_t i=0u; i<count; i++)
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{
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auto imageView = device->createImageView({
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.flags = IGPUImageView::ECF_NONE,
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.subUsages = IGPUImage::EUF_RENDER_ATTACHMENT_BIT,
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.image = core::smart_refctd_ptr<IGPUImage>(getImage(i)),
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.viewType = IGPUImageView::ET_2D,
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.format = getImage(i)->getCreationParameters().format
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});
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m_framebuffers[i] = device->createFramebuffer({{
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.renderpass = core::smart_refctd_ptr(m_renderpass),
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.colorAttachments = &imageView.get(),
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.width = sharedParams.width,
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.height = sharedParams.height
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}});
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if (!m_framebuffers[i])
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return false;
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}
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return true;
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}
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core::smart_refctd_ptr<IGPURenderpass> m_renderpass;
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// Per-swapchain
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std::array<core::smart_refctd_ptr<IGPUFramebuffer>,ISwapchain::MaxImages> m_framebuffers;
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};
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}
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#endif

‎include/nbl/video/utilities/CSimpleResizeSurface.h‎

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@@ -54,7 +54,7 @@ class CSimpleResizeSurface final : public ISimpleManagedSurface
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// need to see if the swapchain is invalidated (e.g. because we're starting from 0-area old Swapchain) and try to recreate the swapchain
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inline uint8_t acquireNextImage()
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{
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if (m_swapchainResources && m_swapchainResources->getStatus()!=ISwapchainResources::STATUS::USABLE && !recreateSwapchain())
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if (!m_swapchainResources || m_swapchainResources->getStatus()!=ISwapchainResources::STATUS::USABLE && !recreateSwapchain())
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return ISwapchain::MaxImages;
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return ISimpleManagedSurface::acquireNextImage();
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}
@@ -112,7 +112,13 @@ class CSimpleResizeSurface final : public ISimpleManagedSurface
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.sharedParams = m_sharedParams
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// we're not going to support concurrent sharing in this simple class
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};
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if (params.deduceFormat(device->getPhysicalDevice()))
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const bool success = params.deduceFormat(
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device->getPhysicalDevice(),
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m_swapchainResources->getPreferredFormats(),
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m_swapchainResources->getPreferredEOTFs(),
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m_swapchainResources->getPreferredColorPrimaries()
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);
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if (success)
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newSwapchain = CVulkanSwapchain::create(core::smart_refctd_ptr<const ILogicalDevice>(device),std::move(params));
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}
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}

‎include/nbl/video/utilities/CSmoothResizeSurface.h‎

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@@ -252,7 +252,13 @@ class NBL_API2 ISmoothResizeSurface : public ISimpleManagedSurface
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.sharedParams = m_sharedParams
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// we're not going to support concurrent sharing in this simple class
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};
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if (params.deduceFormat(device->getPhysicalDevice()))
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const bool success = params.deduceFormat(
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device->getPhysicalDevice(),
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swapchainResources->getPreferredFormats(),
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swapchainResources->getPreferredEOTFs(),
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swapchainResources->getPreferredColorPrimaries()
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);
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if (success)
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newSwapchain = CVulkanSwapchain::create(core::smart_refctd_ptr<const ILogicalDevice>(device),std::move(params));
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}
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}

‎include/nbl/video/utilities/ISimpleManagedSurface.h‎

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friend class ISimpleManagedSurface;
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public:
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//
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virtual inline std::span<const asset::E_FORMAT> getPreferredFormats() const {return ISwapchain::SCreationParams::DefaultPreferredFormats;}
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virtual inline std::span<const asset::ELECTRO_OPTICAL_TRANSFER_FUNCTION> getPreferredEOTFs() const {return ISwapchain::SCreationParams::DefaultEOTFs;}
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virtual inline std::span<const asset::E_COLOR_PRIMARIES> getPreferredColorPrimaries() const {return ISwapchain::SCreationParams::DefaultColorPrimaries;}
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// If `init` not called yet this might return nullptr, or the old stale swapchain that should be retired
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inline ISwapchain* getSwapchain() const {return swapchain.get();}
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