private AABB RotateBounds(ref float4x4 tx, ref AABB b)
{
WorldBounds wBounds;
Culling.AxisAlignedToWorldBounds(ref tx, ref b, out wBounds);
// now turn those bounds back to axis aligned..
AABB aab;
Culling.WorldBoundsToAxisAligned(ref wBounds, out aab);
return(aab);
}
private void EncodeBox(RendererBGFXInstance *sys, bgfx.Encoder *encoder, Entity ePass, ref float4x4 tx, float3 cMin, float3 cMax, float width, float4 color)
{
var pass = EntityManager.GetComponentData <RenderPass>(ePass);
float4x4 adjustedProjection = sys->GetAdjustedProjection(ref pass);
float2 normWidth = new float2(width / pass.viewport.w, width / pass.viewport.h);
for (int j = 0; j < Culling.EdgeTable.Length; j++)
{
float3 p0 = Culling.SelectCoordsMinMax(cMin, cMax, Culling.EdgeTable[j] & 7);
float3 p1 = Culling.SelectCoordsMinMax(cMin, cMax, Culling.EdgeTable[j] >> 3);
SubmitHelper.EncodeLine(sys, encoder, pass.viewId, p0, p1, color, normWidth,
ref tx, ref pass.viewTransform, ref adjustedProjection);
}
}
public unsafe void Execute(ArchetypeChunk chunk, int chunkIndex, int firstEntityIndex)
{
var chunkLocalToWorld = chunk.GetNativeArray(LocalToWorldType);
var chunkMeshRenderer = chunk.GetNativeArray(MeshRendererType);
var chunkMeshReference = chunk.GetNativeArray(LitMeshType);
var chunkWorldBoundingSphere = chunk.GetNativeArray(WorldBoundingSphereType);
var boundingSphere = chunk.GetChunkComponentData(ChunkWorldBoundingSphereType).Value;
var bounds = chunk.GetChunkComponentData(ChunkWorldBoundsType).Value;
Entity lighte = SharedLightingRef[chunkIndex];
var lighting = ComponentLightingBGFX[lighte];
Entity rtpe = SharedRenderToPass[chunkIndex];
Assert.IsTrue(ThreadIndex >= 0 && ThreadIndex < MaxPerThreadData);
bgfx.Encoder *encoder = PerThreadData[ThreadIndex].encoder;
if (encoder == null)
{
encoder = bgfx.encoder_begin(true);
Assert.IsTrue(encoder != null);
PerThreadData[ThreadIndex].encoder = encoder;
}
DynamicBuffer <RenderToPassesEntry> toPasses = BufferRenderToPassesEntry[rtpe];
// we can do this loop either way, passes first or renderers first.
// TODO: profile what is better!
for (int i = 0; i < toPasses.Length; i++)
{
Entity ePass = toPasses[i].e;
Frustum frustum = default;
if (ComponentFrustum.Exists(ePass))
{
frustum = ComponentFrustum[ePass]; // TODO, just make frustum a member of pass?
if (Culling.Cull(ref boundingSphere, ref frustum) == Culling.CullingResult.Outside)
{
continue; // nothing to do for this pass
}
}
Assert.IsTrue(encoder != null);
var pass = ComponentRenderPass[ePass];
for (int j = 0; j < chunk.Count; j++)
{
var wbs = chunkWorldBoundingSphere[j];
var meshRenderer = chunkMeshRenderer[j];
var meshRef = chunkMeshReference[j];
var mesh = ComponentSimpleMeshBGFX[meshRef.mesh];
var tx = chunkLocalToWorld[j].Value;
if (Culling.Cull(ref wbs, ref frustum) == Culling.CullingResult.Outside) // TODO: fine cull only if rough culling was !Inside
{
continue;
}
switch (pass.passType) // TODO: we can hoist this out of the loop
{
case RenderPassType.ZOnly:
SubmitHelper.EncodeZOnly(BGFXSystem, encoder, pass.viewId, ref mesh, ref tx, meshRenderer.startIndex, meshRenderer.indexCount, pass.flipCulling);
break;
case RenderPassType.ShadowMap:
float4 bias = new float4(0);
SubmitHelper.EncodeShadowMap(BGFXSystem, encoder, pass.viewId, ref mesh, ref tx, meshRenderer.startIndex, meshRenderer.indexCount, (byte)(pass.flipCulling ^ 0x3), bias);
break;
case RenderPassType.Transparent:
case RenderPassType.Opaque:
var material = ComponentLitMaterialBGFX[meshRenderer.material];
SubmitHelper.EncodeLit(BGFXSystem, encoder, pass.viewId, ref mesh, ref tx, ref material, ref lighting, ref pass.viewTransform, meshRenderer.startIndex, meshRenderer.indexCount, pass.flipCulling, ref PerThreadData[ThreadIndex].viewSpaceLightCache);
break;
default:
Assert.IsTrue(false);
break;
}
}
}
}
protected override void OnUpdate()
{
var sys = World.GetExistingSystem <RendererBGFXSystem>();
if (!sys.Initialized)
{
return;
}
// get all MeshRenderer, cull them, and add them to graph nodes that need them
// any mesh renderer MUST have a shared component data that has a list of passes to render to
// this list is usually very shared - all opaque meshes will render to all ZOnly and Opaque passes
// this shared data is not dynamically updated - other systems are responsible to update them if needed
// simple
Entities.ForEach((Entity e, ref MeshRenderer mr, ref SimpleMeshReference meshRef, ref LocalToWorld tx, ref WorldBounds wb, ref WorldBoundingSphere wbs) =>
{
if (!EntityManager.HasComponent <RenderToPasses>(e))
{
return;
}
RenderToPasses toPassesRef = EntityManager.GetSharedComponentData <RenderToPasses>(e);
DynamicBuffer <RenderToPassesEntry> toPasses = EntityManager.GetBufferRO <RenderToPassesEntry>(toPassesRef.e);
for (int i = 0; i < toPasses.Length; i++)
{
Entity ePass = toPasses[i].e;
var pass = EntityManager.GetComponentData <RenderPass>(ePass);
if (EntityManager.HasComponent <Frustum>(ePass))
{
var frustum = EntityManager.GetComponentData <Frustum>(ePass);
if (Culling.Cull(ref wbs, ref frustum) == Culling.CullingResult.Outside)
{
continue;
}
// double cull as example only
if (Culling.IsCulled(ref wb, ref frustum))
{
continue;
}
}
var mesh = EntityManager.GetComponentData <SimpleMeshBGFX>(meshRef.mesh);
switch (pass.passType)
{
case RenderPassType.ZOnly:
SubmitHelper.SubmitZOnlyDirect(sys, pass.viewId, ref mesh, ref tx.Value, mr.startIndex, mr.indexCount, pass.flipCulling);
break;
case RenderPassType.ShadowMap:
SubmitHelper.SubmitZOnlyDirect(sys, pass.viewId, ref mesh, ref tx.Value, mr.startIndex, mr.indexCount, (byte)(pass.flipCulling ^ 0x3));
break;
case RenderPassType.Transparent:
case RenderPassType.Opaque:
var material = EntityManager.GetComponentData <SimpleMaterialBGFX>(mr.material);
SubmitHelper.SubmitSimpleDirect(sys, pass.viewId, ref mesh, ref tx.Value, ref material, mr.startIndex, mr.indexCount, pass.flipCulling);
break;
default:
Assert.IsTrue(false);
break;
}
}
});
}
protected override void OnUpdate()
{
// check if we need bounds
bool needBounds = false;
Entities.ForEach((Entity e, ref AutoMovingDirectionalLight amdl) =>
{
if (amdl.autoBounds)
{
needBounds = true;
}
});
// compute bounds if needed
// TODO: separate bounds for shadow casters and receivers?
AABB autoBounds = default;
if (needBounds)
{
// TODO: use chunk bounds instead!
float3 bbMin = new float3(float.MaxValue);
float3 bbMax = new float3(-float.MaxValue);
Entities.ForEach((Entity e, ref WorldBounds wb) =>
{
Culling.GrowBounds(ref bbMin, ref bbMax, wb);
});
autoBounds = new AABB {
Center = (bbMin + bbMax) * .5f,
Extents = (bbMax - bbMin) * .5f
};
if (math.any(autoBounds.Extents < 0.0f))
{
autoBounds.Center = new float3(0);
autoBounds.Extents = new float3(0);
}
}
// do assignment
Entities.ForEach((Entity e, ref AutoMovingDirectionalLight amdl, ref DirectionalLight dl, ref Light l, ref LocalToWorld tx) =>
{
if (amdl.autoBounds)
{
amdl.boundsCasters = autoBounds;
amdl.boundsReceivers = autoBounds;
}
// transform bounds into light space rotation
float4x4 rotOnlyTx = tx.Value;
rotOnlyTx.c3 = new float4(0, 0, 0, 1);
float4x4 rotOnlyTxInv = math.inverse(rotOnlyTx);
AABB aabCasters = RotateBounds(ref rotOnlyTx, ref amdl.boundsCasters);
AABB aabReceivers = RotateBounds(ref rotOnlyTx, ref amdl.boundsReceivers);
l.clipZFar = l.clipZNear + aabReceivers.Extents.z + aabCasters.Extents.z; // do not change near clip
float3 posls;
posls.x = aabCasters.Center.x;
posls.y = aabCasters.Center.y;
posls.z = aabCasters.Center.z - aabCasters.Extents.z - l.clipZNear;
tx.Value.c3.xyz = math.transform(rotOnlyTx, posls); // back to world space
dl.size = math.max(aabCasters.Extents.x, aabCasters.Extents.y);
});
}