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473 lines (379 loc) · 18.1 KB
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/*
* Copyright (c) 2024-2025, NVIDIA CORPORATION. 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.
*
* SPDX-FileCopyrightText: Copyright (c) 2024-2025, NVIDIA CORPORATION.
* SPDX-License-Identifier: Apache-2.0
*/
#include <random>
#include <vector>
#include <glm/gtc/constants.hpp>
#include <glm/gtc/matrix_transform.hpp>
#include <glm/ext/scalar_constants.hpp>
#include "renderer.hpp"
#include "../shaders/shaderio.h"
namespace animatedclusters {
bool Renderer::initBasicShaders(Resources& res, Scene& scene, const RendererConfig& config)
{
res.compileShader(m_basicShaders.animComputeVertices, VK_SHADER_STAGE_COMPUTE_BIT, "animupdate_vertices.comp.glsl");
res.compileShader(m_basicShaders.animComputeNormals, VK_SHADER_STAGE_COMPUTE_BIT, "animupdate_normals.comp.glsl");
if(!res.verifyShaders(m_basicShaders))
{
return false;
}
return true;
}
void Renderer::initBasics(Resources& res, Scene& scene, const RendererConfig& config)
{
m_resourceUsageInfo = {};
nvvk::createPipelineLayout(res.m_device, &m_animPipelineLayout, {},
{{VK_SHADER_STAGE_COMPUTE_BIT, 0, sizeof(shaderio::AnimationConstants)}});
VkShaderModuleCreateInfo shaderInfo = {VK_STRUCTURE_TYPE_SHADER_MODULE_CREATE_INFO};
VkComputePipelineCreateInfo info = {VK_STRUCTURE_TYPE_COMPUTE_PIPELINE_CREATE_INFO};
info.layout = m_animPipelineLayout;
info.stage = {VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO};
info.stage.stage = VK_SHADER_STAGE_COMPUTE_BIT;
info.stage.pName = "main";
info.stage.pNext = &shaderInfo;
shaderInfo = nvvkglsl::GlslCompiler::makeShaderModuleCreateInfo(m_basicShaders.animComputeVertices);
vkCreateComputePipelines(res.m_device, nullptr, 1, &info, nullptr, &m_basicPipelines.animComputeVertices);
shaderInfo = nvvkglsl::GlslCompiler::makeShaderModuleCreateInfo(m_basicShaders.animComputeNormals);
vkCreateComputePipelines(res.m_device, nullptr, 1, &info, nullptr, &m_basicPipelines.animComputeNormals);
m_renderInstances.resize(scene.m_instances.size() * config.numSceneCopies);
m_renderInstanceBuffers.resize(m_renderInstances.size());
std::default_random_engine rng(2342);
std::uniform_real_distribution<float> randomUnorm(0.0f, 1.0f);
uint32_t axis = config.gridConfig;
size_t sq = 1;
int numAxis = 0;
if(!axis)
axis = 3;
for(int i = 0; i < 3; i++)
{
numAxis += (axis & (1 << i)) ? 1 : 0;
}
switch(numAxis)
{
case 1:
sq = config.numSceneCopies;
break;
case 2:
while(sq * sq < config.numSceneCopies)
{
sq++;
}
break;
case 3:
while(sq * sq * sq < config.numSceneCopies)
{
sq++;
}
break;
}
VkCommandBuffer cmd = res.createTempCmdBuffer();
size_t lastCopyIndex = 0;
glm::vec3 gridShift;
glm::mat4 gridRotMatrix;
m_geometryFirstInstance.resize(scene.m_geometries.size(), ~0);
for(size_t i = 0; i < m_renderInstances.size(); i++)
{
size_t originalIndex = i % scene.m_instances.size();
size_t copyIndex = i / scene.m_instances.size();
shaderio::RenderInstance& renderInstance = m_renderInstances[i];
renderInstance = {};
const uint32_t geometryID = scene.m_instances[originalIndex].geometryID;
const Scene::Geometry& geometry = scene.m_geometries[geometryID];
glm::mat4 worldMatrix = scene.m_instances[originalIndex].matrix;
bool isFirstInstance = false;
if(m_geometryFirstInstance[geometryID] == ~0)
{
m_geometryFirstInstance[geometryID] = uint32_t(i);
isFirstInstance = true;
}
if(copyIndex)
{
if(copyIndex != lastCopyIndex)
{
lastCopyIndex = copyIndex;
gridShift = config.refShift * (scene.m_bbox.hi - scene.m_bbox.lo);
size_t c = copyIndex;
float u = 0;
float v = 0;
float w = 0;
switch(numAxis)
{
case 1:
u = float(c);
break;
case 2:
u = float(c % sq);
v = float(c / sq);
break;
case 3:
u = float(c % sq);
v = float((c / sq) % sq);
w = float(c / (sq * sq));
break;
}
float use = u;
if(axis & (1 << 0))
{
gridShift.x *= -use;
if(numAxis > 1)
use = v;
}
else
{
gridShift.x = 0;
}
if(axis & (1 << 1))
{
gridShift.y *= use;
if(numAxis > 2)
use = w;
else if(numAxis > 1)
use = v;
}
else
{
gridShift.y = 0;
}
if(axis & (1 << 2))
{
gridShift.z *= -use;
}
else
{
gridShift.z = 0;
}
if(axis & (8 | 16 | 32))
{
glm::vec3 mask = {axis & 8 ? 1.0f : 0.0f, axis & 16 ? 1.0f : 0.0f, axis & 32 ? 1.0f : 0.0f};
glm::vec3 gridDir = glm::vec3(randomUnorm(rng), randomUnorm(rng), randomUnorm(rng));
gridDir = glm::max(gridDir * mask, mask * 0.00001f);
float gridAngle = randomUnorm(rng) * glm::pi<float>() * 2.0f;
gridDir = glm::normalize(gridDir);
gridRotMatrix = glm::rotate(glm::mat4(1), gridAngle, gridDir);
}
}
glm::vec3 translation;
translation = worldMatrix[3];
if(axis & (8 | 16 | 32))
{
worldMatrix[3] = glm::vec4(0, 0, 0, 1);
worldMatrix = gridRotMatrix * worldMatrix;
}
worldMatrix[3] = glm::vec4(translation + gridShift, 1.f);
}
renderInstance.worldMatrix = worldMatrix;
renderInstance.numVertices = geometry.numVertices;
renderInstance.numClusters = geometry.numClusters;
renderInstance.numTriangles = geometry.numTriangles;
renderInstance.geometryID = geometryID;
// original data
renderInstance.triangles = geometry.trianglesBuffer.address;
renderInstance.clusters = geometry.clustersBuffer.address;
renderInstance.clusterLocalTriangles = geometry.clusterLocalTrianglesBuffer.address;
renderInstance.clusterLocalVertices = geometry.clusterLocalVerticesBuffer.address;
renderInstance.clusterBboxes = geometry.clusterBboxesBuffer.address;
renderInstance.originalPositions = geometry.positionsBuffer.address;
RenderInstanceData& renderInstanceData = m_renderInstanceBuffers[i];
if(config.doAnimation)
{
// animated, each instance gets its own copy
res.m_allocator.createBuffer(renderInstanceData.positions, sizeof(glm::vec3) * geometry.numVertices,
VK_BUFFER_USAGE_STORAGE_BUFFER_BIT
| VK_BUFFER_USAGE_ACCELERATION_STRUCTURE_BUILD_INPUT_READ_ONLY_BIT_KHR);
res.m_allocator.createBuffer(renderInstanceData.normals, sizeof(glm::vec3) * geometry.numVertices,
VK_BUFFER_USAGE_STORAGE_BUFFER_BIT
| VK_BUFFER_USAGE_ACCELERATION_STRUCTURE_BUILD_INPUT_READ_ONLY_BIT_KHR);
m_resourceUsageInfo.sceneMemBytes += renderInstanceData.positions.bufferSize;
m_resourceUsageInfo.sceneMemBytes += renderInstanceData.normals.bufferSize;
// seed with original data
VkBufferCopy region;
region.dstOffset = 0;
region.size = sizeof(glm::vec3) * geometry.numVertices;
region.srcOffset = 0;
vkCmdCopyBuffer(cmd, geometry.positionsBuffer.buffer, renderInstanceData.positions.buffer, 1, ®ion);
vkCmdFillBuffer(cmd, renderInstanceData.normals.buffer, 0, renderInstanceData.normals.bufferSize, 0);
renderInstance.positions = renderInstanceData.positions.address;
renderInstance.normals = renderInstanceData.normals.address;
}
else if(isFirstInstance)
{
// first instance for a geometry will allocate a normal buffer, that all other instances will share
res.m_allocator.createBuffer(renderInstanceData.normals, sizeof(glm::vec3) * geometry.numVertices,
VK_BUFFER_USAGE_STORAGE_BUFFER_BIT
| VK_BUFFER_USAGE_ACCELERATION_STRUCTURE_BUILD_INPUT_READ_ONLY_BIT_KHR);
m_resourceUsageInfo.sceneMemBytes += renderInstanceData.normals.bufferSize;
renderInstance.positions = geometry.positionsBuffer.address;
renderInstance.normals = renderInstanceData.normals.address;
}
else
{
renderInstance.positions = geometry.positionsBuffer.address;
renderInstance.normals = m_renderInstanceBuffers[m_geometryFirstInstance[geometryID]].normals.address;
}
}
res.tempSyncSubmit(cmd);
res.m_allocator.createBuffer(m_renderInstanceBuffer, sizeof(shaderio::RenderInstance) * m_renderInstances.size(),
VK_BUFFER_USAGE_STORAGE_BUFFER_BIT);
res.simpleUploadBuffer(m_renderInstanceBuffer, m_renderInstances.data());
m_resourceUsageInfo.sceneMemBytes += m_renderInstanceBuffer.bufferSize;
{
cmd = res.createTempCmdBuffer();
// update normals once
shaderio::AnimationConstants constants;
constants.animationState = 0;
constants.instances = m_renderInstanceBuffer.address;
vkCmdBindPipeline(cmd, VK_PIPELINE_BIND_POINT_COMPUTE, m_basicPipelines.animComputeNormals);
for(size_t i = 0; i < m_renderInstances.size(); i++)
{
// without animation, only a subset of instances would have unique normals
if(!m_renderInstanceBuffers[i].normals.buffer)
continue;
constants.instanceIndex = uint32_t(i);
vkCmdPushConstants(cmd, m_animPipelineLayout, VK_SHADER_STAGE_COMPUTE_BIT, 0, sizeof(constants), &constants);
vkCmdDispatch(cmd, nvvk::getGroupCounts(m_renderInstances[i].numTriangles, ANIMATION_WORKGROUP_SIZE), 1, 1);
}
res.tempSyncSubmit(cmd);
}
}
void Renderer::deinitBasics(Resources& res)
{
res.destroyPipelines(m_basicPipelines);
vkDestroyPipelineLayout(res.m_device, m_animPipelineLayout, nullptr);
for(auto& it : m_renderInstanceBuffers)
{
res.m_allocator.destroyBuffer(it.positions);
res.m_allocator.destroyBuffer(it.normals);
}
res.m_allocator.destroyBuffer(m_renderInstanceBuffer);
}
void Renderer::updateAnimation(VkCommandBuffer cmd, Resources& res, Scene& scene, const FrameConfig& frame, nvvk::ProfilerGpuTimer& profiler)
{
assert(m_config.doAnimation);
auto timerSection = profiler.cmdFrameSection(cmd, "Animation");
shaderio::AnimationConstants constants;
constants.animationState = frame.frameConstants.animationState;
constants.instances = m_renderInstanceBuffer.address;
constants.rippleEnabled = frame.frameConstants.animationRippleEnabled;
constants.rippleFrequency = frame.frameConstants.animationRippleFrequency;
constants.rippleAmplitude = frame.frameConstants.animationRippleAmplitude;
constants.rippleSpeed = frame.frameConstants.animationRippleSpeed;
constants.twistEnabled = frame.frameConstants.animationTwistEnabled;
constants.twistSpeed = frame.frameConstants.animationTwistSpeed;
constants.twistMaxAngle = frame.frameConstants.animationTwistMaxAngle * glm::pi<float>() / 180.f;
// first pass all positions
vkCmdBindPipeline(cmd, VK_PIPELINE_BIND_POINT_COMPUTE, m_basicPipelines.animComputeVertices);
for(size_t i = 0; i < m_renderInstances.size(); i++)
{
const Scene::Geometry& sceneGeometry = scene.m_geometries[m_renderInstances[i].geometryID];
constants.instanceIndex = uint32_t(i);
// offset by instance
constants.animationState = frame.frameConstants.animationState + float(i);
constants.geometrySize = glm::length(sceneGeometry.bbox.hi - sceneGeometry.bbox.lo);
vkCmdPushConstants(cmd, m_animPipelineLayout, VK_SHADER_STAGE_COMPUTE_BIT, 0, sizeof(constants), &constants);
vkCmdDispatch(cmd, nvvk::getGroupCounts(m_renderInstances[i].numVertices, ANIMATION_WORKGROUP_SIZE), 1, 1);
}
nvvk::cmdMemoryBarrier(cmd, VK_PIPELINE_STAGE_2_COMPUTE_SHADER_BIT, VK_PIPELINE_STAGE_2_COMPUTE_SHADER_BIT);
// second pass all normals
vkCmdBindPipeline(cmd, VK_PIPELINE_BIND_POINT_COMPUTE, m_basicPipelines.animComputeNormals);
for(size_t i = 0; i < m_renderInstances.size(); i++)
{
constants.instanceIndex = uint32_t(i);
vkCmdPushConstants(cmd, m_animPipelineLayout, VK_SHADER_STAGE_COMPUTE_BIT, 0, sizeof(constants), &constants);
vkCmdDispatch(cmd, nvvk::getGroupCounts(m_renderInstances[i].numTriangles, ANIMATION_WORKGROUP_SIZE), 1, 1);
}
}
void Renderer::initRayTracingTlas(Resources& res, Scene& scene, const RendererConfig& config, const VkAccelerationStructureKHR* blas)
{
std::vector<VkAccelerationStructureInstanceKHR> tlasInstances(m_renderInstances.size());
for(size_t i = 0; i < m_renderInstances.size(); i++)
{
VkDeviceAddress blasAddress{};
if(blas != nullptr)
{
VkAccelerationStructureDeviceAddressInfoKHR addressInfo{VK_STRUCTURE_TYPE_ACCELERATION_STRUCTURE_DEVICE_ADDRESS_INFO_KHR};
addressInfo.accelerationStructure = blas[i];
blasAddress = vkGetAccelerationStructureDeviceAddressKHR(res.m_device, &addressInfo);
}
VkAccelerationStructureInstanceKHR instance{};
instance.transform = nvvk::toTransformMatrixKHR(m_renderInstances[i].worldMatrix);
instance.instanceCustomIndex = static_cast<uint32_t>(i); // gl_InstanceCustomIndexEX
instance.mask = 0xFF; // All objects
instance.instanceShaderBindingTableRecordOffset = 0, // We will use the same hit group for all object
instance.flags = VK_GEOMETRY_INSTANCE_FORCE_OPAQUE_BIT_KHR;
instance.accelerationStructureReference = blasAddress;
tlasInstances[i] = instance;
}
// Create a buffer holding the actual instance data (matrices++) for use by the AS builder
res.m_allocator.createBuffer(m_tlasInstancesBuffer, tlasInstances.size() * sizeof(VkAccelerationStructureInstanceKHR),
VK_BUFFER_USAGE_ACCELERATION_STRUCTURE_BUILD_INPUT_READ_ONLY_BIT_KHR | VK_BUFFER_USAGE_STORAGE_BUFFER_BIT);
m_resourceUsageInfo.rtOtherMemBytes += tlasInstances.size() * sizeof(VkAccelerationStructureInstanceKHR);
res.simpleUploadBuffer(m_tlasInstancesBuffer, tlasInstances.data());
// Wraps a device pointer to the above uploaded instances.
VkAccelerationStructureGeometryInstancesDataKHR instancesVk{VK_STRUCTURE_TYPE_ACCELERATION_STRUCTURE_GEOMETRY_INSTANCES_DATA_KHR};
instancesVk.data.deviceAddress = m_tlasInstancesBuffer.address;
// Put the above into a VkAccelerationStructureGeometryKHR. We need to put the instances struct in a union and label it as instance data.
m_tlasGeometry.sType = VK_STRUCTURE_TYPE_ACCELERATION_STRUCTURE_GEOMETRY_KHR;
m_tlasGeometry.geometryType = VK_GEOMETRY_TYPE_INSTANCES_KHR;
m_tlasGeometry.geometry.instances = instancesVk;
// Find sizes
m_tlasBuildInfo.sType = VK_STRUCTURE_TYPE_ACCELERATION_STRUCTURE_BUILD_GEOMETRY_INFO_KHR;
m_tlasBuildInfo.flags = VK_BUILD_ACCELERATION_STRUCTURE_ALLOW_UPDATE_BIT_KHR;
m_tlasBuildInfo.geometryCount = 1;
m_tlasBuildInfo.pGeometries = &m_tlasGeometry;
// FIXME
m_tlasBuildInfo.mode = VK_BUILD_ACCELERATION_STRUCTURE_MODE_BUILD_KHR;
m_tlasBuildInfo.type = VK_ACCELERATION_STRUCTURE_TYPE_TOP_LEVEL_KHR;
m_tlasBuildInfo.srcAccelerationStructure = VK_NULL_HANDLE;
uint32_t instanceCount = uint32_t(m_renderInstances.size());
VkAccelerationStructureBuildSizesInfoKHR sizeInfo{VK_STRUCTURE_TYPE_ACCELERATION_STRUCTURE_BUILD_SIZES_INFO_KHR};
vkGetAccelerationStructureBuildSizesKHR(res.m_device, VK_ACCELERATION_STRUCTURE_BUILD_TYPE_DEVICE_KHR,
&m_tlasBuildInfo, &instanceCount, &sizeInfo);
// Create TLAS
VkAccelerationStructureCreateInfoKHR createInfo{VK_STRUCTURE_TYPE_ACCELERATION_STRUCTURE_CREATE_INFO_KHR};
createInfo.type = VK_ACCELERATION_STRUCTURE_TYPE_TOP_LEVEL_KHR;
createInfo.size = sizeInfo.accelerationStructureSize;
res.m_allocator.createAcceleration(m_tlas, createInfo);
m_resourceUsageInfo.rtTlasMemBytes += createInfo.size;
// Allocate the scratch memory
res.m_allocator.createBuffer(m_tlasScratchBuffer, sizeInfo.buildScratchSize,
VK_BUFFER_USAGE_STORAGE_BUFFER_BIT | VK_BUFFER_USAGE_ACCELERATION_STRUCTURE_STORAGE_BIT_KHR);
m_resourceUsageInfo.rtOtherMemBytes += sizeInfo.buildScratchSize;
// Update build information
m_tlasBuildInfo.srcAccelerationStructure = VK_NULL_HANDLE;
m_tlasBuildInfo.dstAccelerationStructure = m_tlas.accel;
m_tlasBuildInfo.scratchData.deviceAddress = m_tlasScratchBuffer.address;
}
void Renderer::updateRayTracingTlas(VkCommandBuffer cmd, Resources& res, Scene& scene, bool update)
{
if(update)
{
m_tlasBuildInfo.mode = VK_BUILD_ACCELERATION_STRUCTURE_MODE_UPDATE_KHR;
m_tlasBuildInfo.srcAccelerationStructure = m_tlas.accel;
}
else
{
m_tlasBuildInfo.mode = VK_BUILD_ACCELERATION_STRUCTURE_MODE_BUILD_KHR;
m_tlasBuildInfo.srcAccelerationStructure = VK_NULL_HANDLE;
}
// Build Offsets info: n instances
VkAccelerationStructureBuildRangeInfoKHR buildOffsetInfo{uint32_t(m_renderInstances.size()), 0, 0, 0};
const VkAccelerationStructureBuildRangeInfoKHR* pBuildOffsetInfo = &buildOffsetInfo;
// Build the TLAS
vkCmdBuildAccelerationStructuresKHR(cmd, 1, &m_tlasBuildInfo, &pBuildOffsetInfo);
}
} // namespace animatedclusters
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