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Graphics: Add initial support for transparency

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This commit is contained in:
Jérôme Leclercq
2021-09-08 19:08:44 +02:00
parent c6763bc623
commit 72f2a5b531
12 changed files with 154 additions and 40 deletions
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63
include/Nazara/Graphics/RenderSubmesh.inl
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@@ -7,36 +7,71 @@
namespace Nz
{
inline RenderSubmesh::RenderSubmesh(int renderLayer, std::shared_ptr<RenderPipeline> renderPipeline, std::size_t indexCount, std::shared_ptr<AbstractBuffer> indexBuffer, std::shared_ptr<AbstractBuffer> vertexBuffer, const ShaderBinding& instanceBinding, const ShaderBinding& materialBinding) :
inline RenderSubmesh::RenderSubmesh(int renderLayer, std::shared_ptr<RenderPipeline> renderPipeline, std::size_t indexCount, std::shared_ptr<AbstractBuffer> indexBuffer, std::shared_ptr<AbstractBuffer> vertexBuffer, const WorldInstance& worldInstance, const ShaderBinding& materialBinding, const MaterialPassFlags& matFlags) :
RenderElement(BasicRenderElement::Submesh),
m_indexBuffer(std::move(indexBuffer)),
m_vertexBuffer(std::move(vertexBuffer)),
m_renderPipeline(std::move(renderPipeline)),
m_indexCount(indexCount),
m_instanceBinding(instanceBinding),
m_matFlags(matFlags),
m_worldInstance(worldInstance),
m_materialBinding(materialBinding),
m_renderLayer(renderLayer)
{
}
inline UInt64 RenderSubmesh::ComputeSortingScore(const RenderQueueRegistry& registry) const
inline UInt64 RenderSubmesh::ComputeSortingScore(const Nz::Frustumf& frustum, const RenderQueueRegistry& registry) const
{
UInt64 layerIndex = registry.FetchLayerIndex(m_renderLayer);
UInt64 elementType = GetElementType();
UInt64 pipelineIndex = registry.FetchPipelineIndex(m_renderPipeline.get());
UInt64 vertexBufferIndex = registry.FetchVertexBuffer(m_vertexBuffer.get());
if (m_matFlags.Test(MaterialPassFlag::Transparent))
{
UInt64 matFlags = 1;
// RQ index:
// - Layer (8bits)
// - Element type (4bits)
// - Pipeline (16bits)
// - VertexBuffer (8bits)
// - ?? (24bits) - Depth?
#if defined(arm) && \
((defined(__MAVERICK__) && defined(NAZARA_BIG_ENDIAN)) || \
(!defined(__SOFTFP__) && !defined(__VFP_FP__) && !defined(__MAVERICK__)))
#error The following code relies on native-endian IEEE-754 representation, which your platform does not guarantee
#endif
return (layerIndex & 0xFF) << 60 |
(elementType & 0xF) << 52 |
(pipelineIndex & 0xFFFF) << 36 |
(vertexBufferIndex & 0xFF) << 24;
static_assert(sizeof(float) == sizeof(UInt32));
float distanceNear = frustum.GetPlane(Nz::FrustumPlane::Near).Distance(m_worldInstance.GetWorldMatrix().GetTranslation());
UInt32 distanceInt;
std::memcpy(&distanceInt, &distanceNear, sizeof(UInt32));
UInt64 distance = ~distanceInt; //< Reverse distance to have back to front
// Transparent RQ index:
// - Layer (8bits)
// - Transparent flag (1bit)
// - Distance to near plane (32bits)
return (layerIndex & 0xFF) << 60 |
(matFlags) << 52 |
(distance) << 51;
}
else
{
UInt64 matFlags = 0;
// Opaque RQ index:
// - Layer (8bits)
// - Transparent flag (1bit)
// - Element type (4bits)
// - Pipeline (16bits)
// - VertexBuffer (8bits)
// - ?? (24bits) - Depth?
return (layerIndex & 0xFF) << 60 |
(matFlags) << 52 |
(elementType & 0xF) << 51 |
(pipelineIndex & 0xFFFF) << 35 |
(vertexBufferIndex & 0xFF) << 23;
}
}
inline const AbstractBuffer* RenderSubmesh::GetIndexBuffer() const
@@ -56,7 +91,7 @@ namespace Nz
inline const ShaderBinding& RenderSubmesh::GetInstanceBinding() const
{
return m_instanceBinding;
return m_worldInstance.GetShaderBinding();
}
inline const ShaderBinding& RenderSubmesh::GetMaterialBinding() const