80 lines
3.2 KiB
C++
80 lines
3.2 KiB
C++
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// occlusionAsync
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// athomas: 07/03/2013
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// Lighter Occlusion test methods for Async Jobs
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#define g_auxDmaTag (0)
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#include "occlusionAsync.h"
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///////////////////////////////////////////////////////////////////////////////
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// IsAABBOccludedAsync
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///////////////////////////////////////////////////////////////////////////////
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bool IsAABBOccludedAsync(const spdAABB& aabb, Vec3V_In camPos, int occluderPhase, const fwScanBaseInfo* scanBaseInfo, const Vec4V* hiZBuffer
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DEV_ONLY(, u32* trivialAcceptActiveFrustum, u32* trivialAcceptMinZ, u32* trivialAcceptVisiblePixel))
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{
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bool result = false;
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ScalarV area = rstTestAABBExactEdgeList(false, scanBaseInfo->m_transform[ occluderPhase ],
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ScalarVFromF32(scanBaseInfo->m_depthRescale[ occluderPhase ]),
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hiZBuffer, camPos, aabb.GetMin(), aabb.GetMax(), ScalarV(V_ZERO)
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, scanBaseInfo->m_minMaxBounds[occluderPhase], scanBaseInfo->m_minZ[occluderPhase]
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DEV_ONLY(, trivialAcceptActiveFrustum, trivialAcceptMinZ, trivialAcceptVisiblePixel)
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);
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result = IsGreaterThanAll( area, ScalarV(V_ZERO))==0;
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return result;
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}
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bool IsSphereVisibleAsync(const spdSphere& sphere, int occluderPhase, const fwScanBaseInfo* scanBaseInfo, const Vec4V* hiZBuffer,
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const Vec3V* IcosahedronPts, u32 numIcosahedronPts, const u8* IcosahedronIndices, u32 numIcosahedronIndices)
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{
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// generate a icosahedron
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#define MAX_ICOSAHEDRON_INDICES 60
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Assert(numIcosahedronIndices <= MAX_ICOSAHEDRON_INDICES);
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Vec3V pointList[ MAX_ICOSAHEDRON_INDICES ];
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for (u32 i = 0;i< numIcosahedronPts ;i++)
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{
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pointList[i]=AddScaled( sphere.GetCenter(), IcosahedronPts[i], sphere.GetRadius() );
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}
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ScalarV area = rstTestModelExact( scanBaseInfo->m_transform[ occluderPhase ],
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ScalarVFromF32(scanBaseInfo->m_depthRescale[ occluderPhase ]),
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hiZBuffer, pointList, IcosahedronIndices,
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numIcosahedronPts, numIcosahedronIndices, ScalarV(V_ZERO));
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return IsTrue( area > ScalarV(V_ZERO));
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}
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bool IsConeVisibleAsync(const Mat34V& mtx, float radius, float spreadf, int occluderPhase, const fwScanBaseInfo* scanBaseInfo, const Vec4V* hiZBuffer,
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const Vec3V* ConePts, u32 numConePts, const u8* ConeIndices, u32 numConeIndices)
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{
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// generate a icosahedron
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#define MAX_CONE_POINTS 8
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Assert(numConePts <= MAX_CONE_POINTS);
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Vec3V pointList[ MAX_CONE_POINTS+1 ];
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const Vec3V a = mtx.a();
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const Vec3V b = mtx.b();
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const Vec3V c = mtx.c();
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// Get location of the cap.
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const ScalarV computedRange = ScalarVFromF32(radius);
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const ScalarV spread = ScalarVFromF32(spreadf);
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// const ScalarV halfSpread = Scale( spread, ScalarV(V_HALF));
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const Vec3V endcap = AddScaled( mtx.d(), c, -computedRange /* +halfSpread */);
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pointList[0] = mtx.d();
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const Vec3V as = a*spread;
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const Vec3V bs = b* spread;
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const Vec3V cs = c * -spread;
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for (u32 i = 0; i<numConePts; i++)
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{
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pointList[i+1]= AddScaled(AddScaled( AddScaled( endcap, as, ConePts[i].GetY()), bs, ConePts[i].GetZ() ), cs, ConePts[i].GetX());
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}
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ScalarV area = rstTestModelExact( scanBaseInfo->m_transform[ occluderPhase ],
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ScalarVFromF32(scanBaseInfo->m_depthRescale[ occluderPhase ]),
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hiZBuffer, pointList, ConeIndices,
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numConePts+1, numConeIndices, ScalarV(V_ZERO));
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return IsTrue( area > ScalarV(V_ZERO));
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}
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