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Proof of concept

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This commit is contained in:
Jérôme Leclercq
2021-10-20 23:50:23 +02:00
parent 58485cfa79
commit e84ec8e4ac
25 changed files with 366 additions and 139 deletions
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174
src/Nazara/Graphics/SubmeshRenderer.cpp
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@@ -5,41 +5,48 @@
#include <Nazara/Graphics/SubmeshRenderer.hpp>
#include <Nazara/Graphics/Graphics.hpp>
#include <Nazara/Graphics/RenderSubmesh.hpp>
#include <Nazara/Graphics/ViewerInstance.hpp>
#include <Nazara/Renderer/CommandBufferBuilder.hpp>
#include <Nazara/Renderer/RenderFrame.hpp>
#include <Nazara/Graphics/Debug.hpp>
namespace Nz
{
SubmeshRenderer::SubmeshRenderer()
{
Graphics* graphics = Graphics::Instance();
const auto& whiteTexture = graphics->GetDefaultTextures().whiteTexture2d;
const auto& defaultSampler = graphics->GetSamplerCache().Get({});
m_renderDataBinding = graphics->GetReferencePipelineLayout()->AllocateShaderBinding(Graphics::DrawDataBindingSet);
m_renderDataBinding->Update({
{
0,
ShaderBinding::TextureBinding {
whiteTexture.get(), defaultSampler.get()
}
}
});
}
std::unique_ptr<ElementRendererData> SubmeshRenderer::InstanciateData()
{
return {};
return std::make_unique<SubmeshRendererData>();
}
void SubmeshRenderer::Render(ElementRendererData& /*rendererData*/, CommandBufferBuilder& commandBuffer, const Pointer<const RenderElement>* elements, std::size_t elementCount)
void SubmeshRenderer::Prepare(const ViewerInstance& viewerInstance, ElementRendererData& rendererData, RenderFrame& /*currentFrame*/, const Pointer<const RenderElement>* elements, std::size_t elementCount)
{
Graphics* graphics = Graphics::Instance();
auto& data = static_cast<SubmeshRendererData&>(rendererData);
const AbstractBuffer* currentIndexBuffer = nullptr;
const AbstractBuffer* currentVertexBuffer = nullptr;
const RenderPipeline* currentPipeline = nullptr;
const ShaderBinding* currentMaterialBinding = nullptr;
const ShaderBinding* currentShaderBinding = nullptr;
const WorldInstance* currentWorldInstance = nullptr;
commandBuffer.BindShaderBinding(Graphics::DrawDataBindingSet, *m_renderDataBinding);
auto FlushDrawCall = [&]()
{
// Does nothing for now (but will serve once instancing is implemented)
};
auto FlushDrawData = [&]()
{
FlushDrawCall();
currentShaderBinding = nullptr;
};
const auto& whiteTexture = Graphics::Instance()->GetDefaultTextures().whiteTexture2d;
const auto& defaultSampler = graphics->GetSamplerCache().Get({});
for (std::size_t i = 0; i < elementCount; ++i)
{
@@ -48,34 +55,139 @@ namespace Nz
if (const RenderPipeline* pipeline = submesh.GetRenderPipeline(); currentPipeline != pipeline)
{
commandBuffer.BindPipeline(*pipeline);
FlushDrawCall();
currentPipeline = pipeline;
}
if (const ShaderBinding* materialBinding = &submesh.GetMaterialBinding(); currentMaterialBinding != materialBinding)
{
commandBuffer.BindShaderBinding(Graphics::MaterialBindingSet, *materialBinding);
currentMaterialBinding = materialBinding;
}
if (const AbstractBuffer* indexBuffer = submesh.GetIndexBuffer(); currentIndexBuffer != indexBuffer)
{
commandBuffer.BindIndexBuffer(*indexBuffer);
FlushDrawCall();
currentIndexBuffer = indexBuffer;
}
if (const AbstractBuffer* vertexBuffer = submesh.GetVertexBuffer(); currentVertexBuffer != vertexBuffer)
{
commandBuffer.BindVertexBuffer(0, *vertexBuffer);
FlushDrawCall();
currentVertexBuffer = vertexBuffer;
}
commandBuffer.BindShaderBinding(Graphics::WorldBindingSet, submesh.GetInstanceBinding());
if (currentWorldInstance != &submesh.GetWorldInstance())
{
// TODO: Flushing draw calls on instance binding means we can have e.g. 1000 sprites rendered using a draw call for each one
// which is far from being efficient, using some bindless could help (or at least instancing?)
FlushDrawData();
currentWorldInstance = &submesh.GetWorldInstance();
}
if (currentIndexBuffer)
commandBuffer.DrawIndexed(submesh.GetIndexCount());
else
commandBuffer.Draw(submesh.GetIndexCount());
if (!currentShaderBinding)
{
m_bindingCache.clear();
const MaterialPass& materialPass = submesh.GetMaterialPass();
materialPass.FillShaderBinding(m_bindingCache);
// Predefined shader bindings
const auto& matSettings = materialPass.GetSettings();
if (std::size_t bindingIndex = matSettings->GetPredefinedBinding(PredefinedShaderBinding::InstanceDataUbo); bindingIndex != MaterialSettings::InvalidIndex)
{
const auto& instanceBuffer = currentWorldInstance->GetInstanceBuffer();
auto& bindingEntry = m_bindingCache.emplace_back();
bindingEntry.bindingIndex = bindingIndex;
bindingEntry.content = ShaderBinding::UniformBufferBinding{
instanceBuffer.get(),
0, instanceBuffer->GetSize()
};
}
if (std::size_t bindingIndex = matSettings->GetPredefinedBinding(PredefinedShaderBinding::ViewerDataUbo); bindingIndex != MaterialSettings::InvalidIndex)
{
const auto& viewerBuffer = viewerInstance.GetViewerBuffer();
auto& bindingEntry = m_bindingCache.emplace_back();
bindingEntry.bindingIndex = bindingIndex;
bindingEntry.content = ShaderBinding::UniformBufferBinding{
viewerBuffer.get(),
0, viewerBuffer->GetSize()
};
}
if (std::size_t bindingIndex = matSettings->GetPredefinedBinding(PredefinedShaderBinding::OverlayTexture); bindingIndex != MaterialSettings::InvalidIndex)
{
auto& bindingEntry = m_bindingCache.emplace_back();
bindingEntry.bindingIndex = bindingIndex;
bindingEntry.content = ShaderBinding::TextureBinding{
whiteTexture.get(), defaultSampler.get()
};
}
ShaderBindingPtr drawDataBinding = currentPipeline->GetPipelineInfo().pipelineLayout->AllocateShaderBinding(0);
drawDataBinding->Update(m_bindingCache.data(), m_bindingCache.size());
currentShaderBinding = drawDataBinding.get();
data.shaderBindings.emplace_back(std::move(drawDataBinding));
}
auto& drawCall = data.drawCalls.emplace_back();
drawCall.indexBuffer = currentIndexBuffer;
drawCall.indexCount = submesh.GetIndexCount();
drawCall.renderPipeline = currentPipeline;
drawCall.shaderBinding = currentShaderBinding;
drawCall.vertexBuffer = currentVertexBuffer;
}
}
void SubmeshRenderer::Render(const ViewerInstance& /*viewerInstance*/, ElementRendererData& rendererData, CommandBufferBuilder& commandBuffer, const Pointer<const RenderElement>* /*elements*/, std::size_t /*elementCount*/)
{
auto& data = static_cast<SubmeshRendererData&>(rendererData);
const AbstractBuffer* currentIndexBuffer = nullptr;
const AbstractBuffer* currentVertexBuffer = nullptr;
const RenderPipeline* currentPipeline = nullptr;
const ShaderBinding* currentShaderBinding = nullptr;
for (const auto& drawData : data.drawCalls)
{
if (currentPipeline != drawData.renderPipeline)
{
commandBuffer.BindPipeline(*drawData.renderPipeline);
currentPipeline = drawData.renderPipeline;
}
if (currentShaderBinding != drawData.shaderBinding)
{
commandBuffer.BindShaderBinding(0, *drawData.shaderBinding);
currentShaderBinding = drawData.shaderBinding;
}
if (currentIndexBuffer != drawData.indexBuffer)
{
commandBuffer.BindIndexBuffer(*drawData.indexBuffer);
currentIndexBuffer = drawData.indexBuffer;
}
if (currentVertexBuffer != drawData.vertexBuffer)
{
commandBuffer.BindVertexBuffer(0, *drawData.vertexBuffer);
currentVertexBuffer = drawData.vertexBuffer;
}
if (currentIndexBuffer)
commandBuffer.DrawIndexed(drawData.indexCount);
else
commandBuffer.Draw(drawData.indexCount);
}
}
void SubmeshRenderer::Reset(ElementRendererData& rendererData, RenderFrame& currentFrame)
{
auto& data = static_cast<SubmeshRendererData&>(rendererData);
for (auto& shaderBinding : data.shaderBindings)
currentFrame.PushForRelease(std::move(shaderBinding));
data.shaderBindings.clear();
data.drawCalls.clear();
}
}