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Push Mesh Loader example
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‎12_MeshLoaders/CMakeLists.txt‎

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set(NBL_INCLUDE_SERACH_DIRECTORIES
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"${CMAKE_CURRENT_SOURCE_DIR}/include"
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)
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# TODO; Arek I removed `NBL_EXECUTABLE_PROJECT_CREATION_PCH_TARGET` from the last parameter here, doesn't this macro have 4 arguments anyway !?
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nbl_create_executable_project("" "" "${NBL_INCLUDE_SERACH_DIRECTORIES}" "" "")
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# TODO: Arek temporarily disabled cause I haven't figured out how to make this target yet
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# LINK_BUILTIN_RESOURCES_TO_TARGET(${EXECUTABLE_NAME} nblExamplesGeometrySpirvBRD)

‎12_MeshLoaders/README.md‎

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https://github.com/user-attachments/assets/6f779700-e6d4-4e11-95fb-7a7fddc47255
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‎12_MeshLoaders/config.json.template‎

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{
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"enableParallelBuild": true,
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"threadsPerBuildProcess" : 2,
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"isExecuted": false,
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"scriptPath": "",
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"cmake": {
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"configurations": [ "Release", "Debug", "RelWithDebInfo" ],
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"buildModes": [],
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"requiredOptions": []
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},
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"profiles": [
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{
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"backend": "vulkan",
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"platform": "windows",
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"buildModes": [],
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"runConfiguration": "Release",
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"gpuArchitectures": []
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}
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],
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"dependencies": [],
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"data": [
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{
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"dependencies": [],
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"command": [""],
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"outputs": []
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}
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]
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}

‎12_MeshLoaders/include/common.hpp‎

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#ifndef _NBL_THIS_EXAMPLE_COMMON_H_INCLUDED_
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#define _NBL_THIS_EXAMPLE_COMMON_H_INCLUDED_
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#include "nbl/examples/examples.hpp"
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using namespace nbl;
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using namespace core;
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using namespace hlsl;
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using namespace system;
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using namespace asset;
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using namespace ui;
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using namespace video;
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using namespace scene;
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using namespace nbl::examples;
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#endif // __NBL_THIS_EXAMPLE_COMMON_H_INCLUDED__

‎12_MeshLoaders/main.cpp‎

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// Copyright (C) 2018-2020 - 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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#include "common.hpp"
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#include "../3rdparty/portable-file-dialogs/portable-file-dialogs.h"
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class MeshLoadersApp final : public MonoWindowApplication, public BuiltinResourcesApplication
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{
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using device_base_t = MonoWindowApplication;
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using asset_base_t = BuiltinResourcesApplication;
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public:
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inline MeshLoadersApp(const path& _localInputCWD, const path& _localOutputCWD, const path& _sharedInputCWD, const path& _sharedOutputCWD)
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: IApplicationFramework(_localInputCWD, _localOutputCWD, _sharedInputCWD, _sharedOutputCWD),
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device_base_t({1280,720}, EF_UNKNOWN, _localInputCWD, _localOutputCWD, _sharedInputCWD, _sharedOutputCWD) {}
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inline bool onAppInitialized(smart_refctd_ptr<ISystem>&& system) override
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{
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if (!asset_base_t::onAppInitialized(smart_refctd_ptr(system)))
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return false;
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if (!device_base_t::onAppInitialized(smart_refctd_ptr(system)))
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return false;
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m_semaphore = m_device->createSemaphore(m_realFrameIx);
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if (!m_semaphore)
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return logFail("Failed to Create a Semaphore!");
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auto pool = m_device->createCommandPool(getGraphicsQueue()->getFamilyIndex(),IGPUCommandPool::CREATE_FLAGS::RESET_COMMAND_BUFFER_BIT);
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for (auto i=0u; i<MaxFramesInFlight; i++)
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{
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if (!pool)
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return logFail("Couldn't create Command Pool!");
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if (!pool->createCommandBuffers(IGPUCommandPool::BUFFER_LEVEL::PRIMARY,{m_cmdBufs.data()+i,1}))
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return logFail("Couldn't create Command Buffer!");
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}
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//! cache results -- speeds up mesh generation on second run
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m_qnc->loadCacheFromFile<EF_R8G8B8_SNORM>(m_system.get(),sharedOutputCWD/"../../tmp/normalCache888.sse");
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//
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if (!reloadModel())
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return false;
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#if 0
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const uint32_t addtionalBufferOwnershipFamilies[] = {getGraphicsQueue()->getFamilyIndex()};
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// we want to use the vertex data through UTBs
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using usage_f = IGPUBuffer::E_USAGE_FLAGS;
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CAssetConverter::patch_t<asset::ICPUPolygonGeometry> patch = {};
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patch.positionBufferUsages = usage_f::EUF_UNIFORM_TEXEL_BUFFER_BIT;
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patch.indexBufferUsages = usage_f::EUF_INDEX_BUFFER_BIT;
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patch.otherBufferUsages = usage_f::EUF_UNIFORM_TEXEL_BUFFER_BIT;
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m_scene = CGeometryCreatorScene::create(
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{
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.transferQueue = getTransferUpQueue(),
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.utilities = m_utils.get(),
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.logger = m_logger.get(),
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.addtionalBufferOwnershipFamilies = addtionalBufferOwnershipFamilies
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},patch
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);
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#endif
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auto scRes = static_cast<CDefaultSwapchainFramebuffers*>(m_surface->getSwapchainResources());
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m_renderer = CSimpleDebugRenderer::create(m_assetMgr.get(),scRes->getRenderpass(),0,nullptr);
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camera.mapKeysToArrows();
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onAppInitializedFinish();
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return true;
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}
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inline IQueue::SSubmitInfo::SSemaphoreInfo renderFrame(const std::chrono::microseconds nextPresentationTimestamp) override
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{
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m_inputSystem->getDefaultMouse(&mouse);
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m_inputSystem->getDefaultKeyboard(&keyboard);
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//
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const auto resourceIx = m_realFrameIx % MaxFramesInFlight;
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auto* const cb = m_cmdBufs.data()[resourceIx].get();
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cb->reset(IGPUCommandBuffer::RESET_FLAGS::RELEASE_RESOURCES_BIT);
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cb->begin(IGPUCommandBuffer::USAGE::ONE_TIME_SUBMIT_BIT);
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// clear to black for both things
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{
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// begin renderpass
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{
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auto scRes = static_cast<CDefaultSwapchainFramebuffers*>(m_surface->getSwapchainResources());
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auto* framebuffer = scRes->getFramebuffer(device_base_t::getCurrentAcquire().imageIndex);
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const IGPUCommandBuffer::SClearColorValue clearValue = { .float32 = {1.f,0.f,1.f,1.f} };
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const IGPUCommandBuffer::SClearDepthStencilValue depthValue = { .depth = 0.f };
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const VkRect2D currentRenderArea =
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{
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.offset = {0,0},
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.extent = {framebuffer->getCreationParameters().width,framebuffer->getCreationParameters().height}
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};
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const IGPUCommandBuffer::SRenderpassBeginInfo info =
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{
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.framebuffer = framebuffer,
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.colorClearValues = &clearValue,
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.depthStencilClearValues = &depthValue,
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.renderArea = currentRenderArea
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};
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cb->beginRenderPass(info,IGPUCommandBuffer::SUBPASS_CONTENTS::INLINE);
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const SViewport viewport = {
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.x = static_cast<float>(currentRenderArea.offset.x),
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.y = static_cast<float>(currentRenderArea.offset.y),
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.width = static_cast<float>(currentRenderArea.extent.width),
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.height = static_cast<float>(currentRenderArea.extent.height)
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};
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cb->setViewport(0u,1u,&viewport);
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cb->setScissor(0u,1u,&currentRenderArea);
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}
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// late latch input
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{
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camera.beginInputProcessing(nextPresentationTimestamp);
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mouse.consumeEvents([&](const IMouseEventChannel::range_t& events) -> void { camera.mouseProcess(events); }, m_logger.get());
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keyboard.consumeEvents([&](const IKeyboardEventChannel::range_t& events) -> void
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{
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camera.keyboardProcess(events);
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},
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m_logger.get()
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);
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camera.endInputProcessing(nextPresentationTimestamp);
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}
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// draw scene
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{
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float32_t3x4 viewMatrix;
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float32_t4x4 viewProjMatrix;
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// TODO: get rid of legacy matrices
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{
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memcpy(&viewMatrix,camera.getViewMatrix().pointer(),sizeof(viewMatrix));
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memcpy(&viewProjMatrix,camera.getConcatenatedMatrix().pointer(),sizeof(viewProjMatrix));
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}
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m_renderer->render(cb,CSimpleDebugRenderer::SViewParams(viewMatrix,viewProjMatrix));
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}
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cb->endRenderPass();
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}
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cb->end();
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//updateGUIDescriptorSet();
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IQueue::SSubmitInfo::SSemaphoreInfo retval =
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{
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.semaphore = m_semaphore.get(),
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.value = ++m_realFrameIx,
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.stageMask = PIPELINE_STAGE_FLAGS::ALL_GRAPHICS_BITS
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};
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const IQueue::SSubmitInfo::SCommandBufferInfo commandBuffers[] =
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{
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{.cmdbuf = cb }
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};
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const IQueue::SSubmitInfo::SSemaphoreInfo acquired[] = {
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{
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.semaphore = device_base_t::getCurrentAcquire().semaphore,
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.value = device_base_t::getCurrentAcquire().acquireCount,
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.stageMask = PIPELINE_STAGE_FLAGS::NONE
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}
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};
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const IQueue::SSubmitInfo infos[] =
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{
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{
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.waitSemaphores = acquired,
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.commandBuffers = commandBuffers,
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.signalSemaphores = {&retval,1}
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}
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};
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if (getGraphicsQueue()->submit(infos) != IQueue::RESULT::SUCCESS)
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{
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retval.semaphore = nullptr; // so that we don't wait on semaphore that will never signal
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m_realFrameIx--;
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}
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std::string caption = "[Nabla Engine] Mesh Loaders";
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{
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caption += ", displaying [";
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caption += m_modelPath;
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caption += "]";
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m_window->setCaption(caption);
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}
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return retval;
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}
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protected:
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const video::IGPURenderpass::SCreationParams::SSubpassDependency* getDefaultSubpassDependencies() const override
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{
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// Subsequent submits don't wait for each other, hence its important to have External Dependencies which prevent users of the depth attachment overlapping.
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const static IGPURenderpass::SCreationParams::SSubpassDependency dependencies[] = {
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// wipe-transition of Color to ATTACHMENT_OPTIMAL and depth
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{
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.srcSubpass = IGPURenderpass::SCreationParams::SSubpassDependency::External,
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.dstSubpass = 0,
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.memoryBarrier = {
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// last place where the depth can get modified in previous frame, `COLOR_ATTACHMENT_OUTPUT_BIT` is implicitly later
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.srcStageMask = PIPELINE_STAGE_FLAGS::LATE_FRAGMENT_TESTS_BIT,
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// don't want any writes to be available, we'll clear
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.srcAccessMask = ACCESS_FLAGS::NONE,
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// destination needs to wait as early as possible
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// TODO: `COLOR_ATTACHMENT_OUTPUT_BIT` shouldn't be needed, because its a logically later stage, see TODO in `ECommonEnums.h`
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.dstStageMask = PIPELINE_STAGE_FLAGS::EARLY_FRAGMENT_TESTS_BIT | PIPELINE_STAGE_FLAGS::COLOR_ATTACHMENT_OUTPUT_BIT,
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// because depth and color get cleared first no read mask
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.dstAccessMask = ACCESS_FLAGS::DEPTH_STENCIL_ATTACHMENT_WRITE_BIT | ACCESS_FLAGS::COLOR_ATTACHMENT_WRITE_BIT
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}
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// leave view offsets and flags default
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},
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// color from ATTACHMENT_OPTIMAL to PRESENT_SRC
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{
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.srcSubpass = 0,
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.dstSubpass = IGPURenderpass::SCreationParams::SSubpassDependency::External,
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.memoryBarrier = {
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// last place where the color can get modified, depth is implicitly earlier
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.srcStageMask = PIPELINE_STAGE_FLAGS::COLOR_ATTACHMENT_OUTPUT_BIT,
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// only write ops, reads can't be made available
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.srcAccessMask = ACCESS_FLAGS::COLOR_ATTACHMENT_WRITE_BIT
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// spec says nothing is needed when presentation is the destination
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}
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// leave view offsets and flags default
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},
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IGPURenderpass::SCreationParams::DependenciesEnd
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};
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return dependencies;
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}
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private:
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inline bool reloadModel()
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{
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pfd::open_file file("Choose a supported Model File", "../../media", { "All Supported Formats", "*.ply *.stl *.serialized *.obj",
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"TODO (.ply)", "*.ply",
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"TODO (.stl)", "*.stl",
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"Mitsuba 0.6 Serialized (.serialized)", "*.serialized",
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"Wavefront Object (.obj)", "*.obj"
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});
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if (file.result().empty())
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return false;
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m_modelPath = file.result()[0];
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// free up
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m_assetMgr->clearAllAssetCache();
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//! load the geometry
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IAssetLoader::SAssetLoadParams params = {};
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params.meshManipulatorOverride = nullptr; // TODO
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auto bundle = m_assetMgr->getAsset(m_modelPath,params);
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if (bundle.getContents().empty())
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return false;
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//! cache results -- speeds up mesh generation on second run
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m_qnc->saveCacheToFile<EF_R8G8B8_SNORM>(m_system.get(),sharedOutputCWD/"../../tmp/normalCache888.sse");
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return true;
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}
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// Maximum frames which can be simultaneously submitted, used to cycle through our per-frame resources like command buffers
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constexpr static inline uint32_t MaxFramesInFlight = 3u;
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//
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smart_refctd_ptr<CQuantNormalCache> m_qnc;
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smart_refctd_ptr<CSimpleDebugRenderer> m_renderer;
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//
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smart_refctd_ptr<ISemaphore> m_semaphore;
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uint64_t m_realFrameIx = 0;
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std::array<smart_refctd_ptr<IGPUCommandBuffer>,MaxFramesInFlight> m_cmdBufs;
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//
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InputSystem::ChannelReader<IMouseEventChannel> mouse;
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InputSystem::ChannelReader<IKeyboardEventChannel> keyboard;
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//
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Camera camera = Camera(core::vectorSIMDf(0, 0, 0), core::vectorSIMDf(0, 0, 0), core::matrix4SIMD());
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// mutables
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std::string m_modelPath;
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};
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NBL_MAIN_FUNC(MeshLoadersApp)

‎12_MeshLoaders/pipeline.groovy‎

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import org.DevshGraphicsProgramming.Agent
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import org.DevshGraphicsProgramming.BuilderInfo
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import org.DevshGraphicsProgramming.IBuilder
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class CUIBuilder extends IBuilder
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{
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public CUIBuilder(Agent _agent, _info)
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{
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super(_agent, _info)
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}
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@Override
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public boolean prepare(Map axisMapping)
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{
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return true
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}
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@Override
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public boolean build(Map axisMapping)
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{
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IBuilder.CONFIGURATION config = axisMapping.get("CONFIGURATION")
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IBuilder.BUILD_TYPE buildType = axisMapping.get("BUILD_TYPE")
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def nameOfBuildDirectory = getNameOfBuildDirectory(buildType)
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def nameOfConfig = getNameOfConfig(config)
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agent.execute("cmake --build ${info.rootProjectPath}/${nameOfBuildDirectory}/${info.targetProjectPathRelativeToRoot} --target ${info.targetBaseName} --config ${nameOfConfig} -j12 -v")
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return true
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}
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@Override
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public boolean test(Map axisMapping)
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{
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return true
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}
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@Override
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public boolean install(Map axisMapping)
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{
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return true
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}
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}
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def create(Agent _agent, _info)
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{
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return new CUIBuilder(_agent, _info)
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}
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return this

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