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Changed the occlusion culling plane model to be on the XZ plane and adjusted the corner point computations

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Doug McDiarmid
2021-06-03 18:40:44 -07:00
parent 792176d764
commit 2449a9322d
4 changed files with 13 additions and 13 deletions
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Gems/Atom/Feature/Common/Assets/Models/OcclusionCullingPlane.fbx
+2 -2
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@@ -1,3 +1,3 @@
version https://git-lfs.github.com/spec/v1
oid sha256:0a1f8d75dcd85e8b4aa57f6c0c81af0300ff96915ba3c2b591095c215d5e1d8c
size 12072
oid sha256:75cdf73fcb9698a76a38294a1cf927a4fb41a34869e0429e1f02bf8d361a7258
size 20400
Gems/Atom/Feature/Common/Code/Source/OcclusionCullingPlane/OcclusionCullingPlaneFeatureProcessor.cpp
+5 -5
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@@ -64,18 +64,18 @@ namespace AZ
RPI::CullingScene::OcclusionPlane rpiOcclusionPlane;
static const Vector3 BL = Vector3(-0.5f, -0.5f, 0.0f);
static const Vector3 BR = Vector3(0.5f, -0.5f, 0.0f);
static const Vector3 TL = Vector3(-0.5f, 0.5f, 0.0f);
static const Vector3 TR = Vector3(0.5f, 0.5f, 0.0f);
static const Vector3 BL = Vector3(-0.5f, 0.0f, -0.5f);
static const Vector3 TL = Vector3(-0.5f, 0.0f, 0.5f);
static const Vector3 TR = Vector3( 0.5f, 0.0f, 0.5f);
static const Vector3 BR = Vector3( 0.5f, 0.0f, -0.5f);
const AZ::Transform& transform = occlusionCullingPlane->GetTransform();
// convert corners to world space
rpiOcclusionPlane.m_cornerBL = transform.TransformPoint(BL);
rpiOcclusionPlane.m_cornerBR = transform.TransformPoint(BR);
rpiOcclusionPlane.m_cornerTL = transform.TransformPoint(TL);
rpiOcclusionPlane.m_cornerTR = transform.TransformPoint(TR);
rpiOcclusionPlane.m_cornerBR = transform.TransformPoint(BR);
// build world space AABB
AZ::Vector3 aabbMin = rpiOcclusionPlane.m_cornerBL.GetMin(rpiOcclusionPlane.m_cornerTR);
Gems/Atom/RPI/Code/Include/Atom/RPI.Public/Culling.h
+1 -1
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@@ -219,9 +219,9 @@ namespace AZ
{
// World space corners of the occluson plane
Vector3 m_cornerBL;
Vector3 m_cornerBR;
Vector3 m_cornerTL;
Vector3 m_cornerTR;
Vector3 m_cornerBR;
Aabb m_aabb;
};
Gems/Atom/RPI/Code/Source/RPI.Public/Culling.cpp
+5 -5
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@@ -574,18 +574,18 @@ namespace AZ
{
// convert to clip-space
Vector4 projectedBL = view.GetWorldToClipMatrix() * Vector4(occlusionPlane.first.m_cornerBL);
Vector4 projectedBR = view.GetWorldToClipMatrix() * Vector4(occlusionPlane.first.m_cornerBR);
Vector4 projectedTL = view.GetWorldToClipMatrix() * Vector4(occlusionPlane.first.m_cornerTL);
Vector4 projectedTR = view.GetWorldToClipMatrix() * Vector4(occlusionPlane.first.m_cornerTR);
Vector4 projectedBR = view.GetWorldToClipMatrix() * Vector4(occlusionPlane.first.m_cornerBR);
// store to float array
float verts[16];
projectedBL.StoreToFloat4(&verts[0]);
projectedBR.StoreToFloat4(&verts[4]);
projectedTL.StoreToFloat4(&verts[8]);
projectedTR.StoreToFloat4(&verts[12]);
projectedTL.StoreToFloat4(&verts[4]);
projectedTR.StoreToFloat4(&verts[8]);
projectedBR.StoreToFloat4(&verts[12]);
static uint32_t indices[6] = { 0, 2, 1, 2, 3, 1 };
static uint32_t indices[6] = { 0, 1, 2, 2, 3, 0 };
// render into the occlusion buffer, specifying BACKFACE_NONE so it functions as a double-sided occluder
maskedOcclusionCulling->RenderTriangles((float*)verts, indices, 2, nullptr, MaskedOcclusionCulling::BACKFACE_NONE);