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Lots of shader changes, basic primitive writing

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Dynamitos
2024-05-30 21:24:21 +02:00
parent f278afad66
commit 953c90f2de
18 changed files with 599 additions and 464 deletions
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res/shaders/lib/Scene.slang
+67 -40
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@@ -2,49 +2,54 @@ import Bounding;
struct MeshletDescription
{
AABB bounding;
uint32_t vertexCount;
uint32_t primitiveCount;
uint32_t vertexOffset;
uint32_t primitiveOffset;
float3 color;
uint32_t indicesOffset;
AABB bounding;
uint32_t vertexCount;
uint32_t primitiveCount;
uint32_t vertexOffset;
uint32_t primitiveOffset;
float3 color;
uint32_t indicesOffset;
};
struct MeshData
{
AABB bounding;
uint32_t numMeshlets;
uint32_t meshletOffset;
uint32_t firstIndex;
uint32_t numIndices;
AABB bounding;
uint32_t numMeshlets;
uint32_t meshletOffset;
uint32_t firstIndex;
uint32_t numIndices;
};
static const uint MAX_VERTICES = 256;
static const uint MAX_PRIMITIVES = 256;
static const uint TASK_GROUP_SIZE = 128;
static const uint MESH_GROUP_SIZE = 32;
static const uint64_t MAX_VERTICES = 256;
static const uint64_t MAX_PRIMITIVES = 256;
static const uint64_t TASK_GROUP_SIZE = 128;
static const uint64_t MESH_GROUP_SIZE = 32;
static const uint64_t MAX_MESHLETS_PER_INSTANCE = 2048;
struct InstanceData
{
float4x4 transformMatrix;
float4x4 inverseTransformMatrix;
float4x4 transformMatrix;
float4x4 inverseTransformMatrix;
};
struct MeshletCullingInfo
{
uint64_t cull[MAX_PRIMITIVES / 64];
// lookup if a specific triangle is visible
bool triangleVisible(uint32_t primIndex)
{
uint32_t arrIdx = primIndex / 64;
uint32_t cullIdx = primIndex % 64;
return (cull[arrIdx] & (1 << cullIdx)) != 0;
}
bool anyVisible()
{
return (cull[0] | cull[1] | cull[2] | cull[3]) != 0;
}
uint64_t visible[MAX_PRIMITIVES / 64];
// lookup if a specific triangle is visible
bool triangleVisible(uint32_t primIndex)
{
uint32_t arrIdx = primIndex / 64;
uint32_t cullIdx = primIndex % 64;
return (visible[arrIdx] & (1 << cullIdx)) != 0;
}
bool triangleCulled(uint32_t primIndex)
{
return !triangleVisible(primIndex);
}
bool anyVisible()
{
return (visible[0] + visible[1] + visible[2] + visible[3]) != 0;
}
};
struct DrawCallOffsets
@@ -56,20 +61,42 @@ ConstantBuffer<DrawCallOffsets> pOffsets;
struct Scene
{
StructuredBuffer<InstanceData> instances;
StructuredBuffer<MeshData> meshData;
StructuredBuffer<MeshletDescription> meshletInfos;
StructuredBuffer<uint8_t> primitiveIndices;
StructuredBuffer<uint32_t> vertexIndices;
StructuredBuffer<MeshletCullingInfo> culledMeshlets;
StructuredBuffer<uint32_t> cullingOffsets;
StructuredBuffer<InstanceData> instances;
StructuredBuffer<MeshData> meshData;
StructuredBuffer<MeshletDescription> meshletInfos;
StructuredBuffer<uint8_t> primitiveIndices;
StructuredBuffer<uint32_t> vertexIndices;
StructuredBuffer<MeshletCullingInfo> culledMeshlets;
StructuredBuffer<uint32_t> cullingOffsets;
};
layout(set=2)
layout(set = 2)
ParameterBlock<Scene> pScene;
uint32_t encodePrimitive(uint32_t primitiveId, uint32_t meshletId, uint32_t instanceId)
{
uint32_t encoded = instanceId;
encoded *= MAX_MESHLETS_PER_INSTANCE;
encoded += meshletId;
encoded *= MAX_PRIMITIVES;
encoded += primitiveId;
return encoded;
}
uint3 decodePrimitive(uint64_t encoded)
{
uint prim = uint(encoded % MAX_PRIMITIVES);
encoded = encoded / MAX_PRIMITIVES;
uint meshletId = uint(encoded % MAX_MESHLETS_PER_INSTANCE);
encoded = encoded / MAX_MESHLETS_PER_INSTANCE;
uint instanceId = uint(encoded);
return uint3(prim, meshletId, instanceId);
}
struct MeshPayload
{
uint instanceId;
uint culledMeshlets[2048];
uint instanceId;
uint meshletOffset;
uint cullingOffset;
uint culledMeshlets[MAX_MESHLETS_PER_INSTANCE];
};