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Graphics: Add support for multi-viewer rendering (a bit hacky)

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This commit is contained in:
Jérôme Leclercq
2021-11-13 20:08:03 +01:00
parent 342c053faa
commit ecd1e43890
8 changed files with 80 additions and 36 deletions
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45
src/Nazara/Graphics/FrameGraph.cpp
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@@ -33,7 +33,7 @@ namespace Nz
BakedFrameGraph FrameGraph::Bake()
{
if (!m_backbufferOutput.has_value())
if (m_backbufferOutputs.empty())
throw std::runtime_error("no backbuffer output has been set");
m_pending.attachmentReadList.clear();
@@ -46,17 +46,18 @@ namespace Nz
m_pending.renderPasses.clear();
m_pending.textures.clear();
m_pending.backbufferResourceIndex = m_backbufferOutput.value();
BuildReadWriteList();
auto it = m_pending.attachmentWriteList.find(m_pending.backbufferResourceIndex);
if (it == m_pending.attachmentWriteList.end())
throw std::runtime_error("no pass writes to backbuffer");
for (std::size_t output : m_backbufferOutputs)
{
auto it = m_pending.attachmentWriteList.find(output);
if (it == m_pending.attachmentWriteList.end())
throw std::runtime_error("no pass writes to backbuffer");
const std::vector<std::size_t>& backbufferPasses = it->second;
for (std::size_t passIndex : backbufferPasses)
TraverseGraph(passIndex);
const std::vector<std::size_t>& backbufferPasses = it->second;
for (std::size_t passIndex : backbufferPasses)
TraverseGraph(passIndex);
}
std::reverse(m_pending.passList.begin(), m_pending.passList.end());
@@ -88,8 +89,22 @@ namespace Nz
bakedSubpass.commandCallback = framePass.GetCommandCallback();
for (const auto& output : framePass.GetOutputs())
{
bakedPass.outputTextureIndices.push_back(Retrieve(m_pending.attachmentToTextures, output.attachmentId));
auto& clearValues = bakedPass.outputClearValues.emplace_back();
if (output.clearColor)
clearValues.color = *output.clearColor;
}
// Add depth-stencil clear values
auto& dsClearValues = bakedPass.outputClearValues.emplace_back();
if (const auto& depthStencilClear = framePass.GetDepthStencilClear())
{
dsClearValues.depth = depthStencilClear->depth;
dsClearValues.stencil = depthStencilClear->stencil;
}
std::size_t attachmentId;
if (attachmentId = framePass.GetDepthStencilOutput(); attachmentId != FramePass::InvalidAttachmentId)
bakedPass.outputTextureIndices.push_back(Retrieve(m_pending.attachmentToTextures, attachmentId));
@@ -228,12 +243,14 @@ namespace Nz
}
// Add TextureUsage::Sampled to backbuffer output
for (std::size_t output : m_backbufferOutputs)
{
auto it = m_pending.attachmentToTextures.find(output);
assert(it != m_pending.attachmentToTextures.end());
auto it = m_pending.attachmentToTextures.find(m_pending.backbufferResourceIndex);
assert(it != m_pending.attachmentToTextures.end());
auto& backbufferTexture = m_pending.textures[it->second];
backbufferTexture.usage |= TextureUsage::ShaderSampling;
auto& backbufferTexture = m_pending.textures[it->second];
backbufferTexture.usage |= TextureUsage::ShaderSampling;
}
}
void FrameGraph::BuildBarriers()