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Adding simple visibility pass

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Dynamitos
2024-06-04 21:34:14 +02:00
parent 157368a241
commit ad00e16cf9
10 changed files with 160 additions and 25 deletions
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res/shaders/lib/Scene.slang
+13 -15
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@@ -20,11 +20,11 @@ struct MeshData
uint32_t numIndices;
};
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;
static const uint32_t MAX_VERTICES = 256;
static const uint32_t MAX_PRIMITIVES = 256;
static const uint32_t TASK_GROUP_SIZE = 128;
static const uint32_t MESH_GROUP_SIZE = 32;
static const uint32_t MAX_MESHLETS_PER_INSTANCE = 2048;
struct InstanceData
{
@@ -34,12 +34,12 @@ struct InstanceData
struct MeshletCullingInfo
{
uint64_t visible[MAX_PRIMITIVES / 64];
uint32_t visible[MAX_PRIMITIVES / 32];
// lookup if a specific triangle is visible
bool triangleVisible(uint32_t primIndex)
{
uint32_t arrIdx = primIndex / 64;
uint32_t cullIdx = primIndex % 64;
uint32_t arrIdx = primIndex / 32;
uint32_t cullIdx = primIndex % 32;
return (visible[arrIdx] & (1 << cullIdx)) != 0;
}
bool triangleCulled(uint32_t primIndex)
@@ -72,19 +72,17 @@ struct Scene
layout(set = 2)
ParameterBlock<Scene> pScene;
uint32_t encodePrimitive(uint32_t primitiveId, uint32_t meshletId, uint32_t instanceId)
uint32_t encodePrimitive(uint32_t primitiveId, uint32_t meshletId)
{
return primitiveId + (meshletId * uint(MAX_PRIMITIVES)) + (instanceId * uint(MAX_MESHLETS_PER_INSTANCE * MAX_PRIMITIVES));
return primitiveId + (meshletId * uint(MAX_PRIMITIVES));
}
uint3 decodePrimitive(uint64_t encoded)
uint2 decodePrimitive(uint32_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);
uint meshletId = uint(encoded);
return uint2(prim, meshletId);
}
struct MeshPayload