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0024864: Implementing refractions in ray-tracing
Refraction index passed to raytrace shader. For transparent objects implemented ray refraction according to refraction index. Transparent materials modified to look better with refractions.
This commit is contained in:
duv
apn
parent
4bc0bb8ab1
commit
dc9ef964d2
@ -363,6 +363,7 @@ void Graphic3d_Group::SetGroupPrimitivesAspect (const Handle(Graphic3d_AspectFil
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ContextFillArea.Back.Specular = float (aBack.Specular());
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ContextFillArea.Back.Transparency = float (aBack.Transparency());
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ContextFillArea.Back.Emission = float (aBack.Emissive());
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ContextFillArea.Back.RefractionIndex = float (aBack.RefractionIndex());
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// Reflection mode
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ContextFillArea.Back.IsAmbient = aBack.ReflectionMode (Graphic3d_TOR_AMBIENT) ? 1 : 0;
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@ -404,6 +405,7 @@ void Graphic3d_Group::SetGroupPrimitivesAspect (const Handle(Graphic3d_AspectFil
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ContextFillArea.Front.Specular = float (aFront.Specular());
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ContextFillArea.Front.Transparency = float (aFront.Transparency());
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ContextFillArea.Front.Emission = float (aFront.Emissive());
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ContextFillArea.Front.RefractionIndex = float (aFront.RefractionIndex());
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// Reflection mode
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ContextFillArea.Front.IsAmbient = aFront.ReflectionMode (Graphic3d_TOR_AMBIENT) ? 1 : 0;
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@ -219,7 +219,7 @@ Standard_Boolean OpenGl_Workspace::UpdateRaytraceGeometry (GeomUpdateMode theMod
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const BVH_Vec4f aSize = myRaytraceGeometry.Box().Size();
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myRaytraceSceneEpsilon = Max (1e-4f, 1e-4f * sqrtf (
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myRaytraceSceneEpsilon = Max (1e-7f, 1e-4f * sqrtf (
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aSize.x() * aSize.x() + aSize.y() * aSize.y() + aSize.z() * aSize.z()));
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return UploadRaytraceData();
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@ -290,8 +290,8 @@ void CreateMaterial (const OPENGL_SURF_PROP& theProp, OpenGl_RaytraceMaterial& t
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// to produce realistic-looking transparency effect
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theMaterial.Transparency = BVH_Vec4f (powf (theProp.trans, 0.75f),
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1.f - theProp.trans,
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1.f,
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1.f);
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theProp.index == 0 ? 1.f : theProp.index,
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theProp.index == 0 ? 1.f : 1.f / theProp.index);
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const float aMaxRefl = Max (theMaterial.Diffuse.x() + theMaterial.Specular.x(),
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Max (theMaterial.Diffuse.y() + theMaterial.Specular.y(),
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@ -92,14 +92,14 @@ struct SIntersect
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#define MAXFLOAT 1e15f
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#define SMALL vec3 (exp2 (-80.f))
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#define SMALL vec3 (exp2 (-80.0f))
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#define ZERO vec3 (0.f, 0.f, 0.f)
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#define UNIT vec3 (1.f, 1.f, 1.f)
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#define ZERO vec3 (0.0f, 0.0f, 0.0f)
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#define UNIT vec3 (1.0f, 1.0f, 1.0f)
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#define AXIS_X vec3 (1.f, 0.f, 0.f)
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#define AXIS_Y vec3 (0.f, 1.f, 0.f)
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#define AXIS_Z vec3 (0.f, 0.f, 1.f)
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#define AXIS_X vec3 (1.0f, 0.0f, 0.0f)
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#define AXIS_Y vec3 (0.0f, 1.0f, 0.0f)
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#define AXIS_Z vec3 (0.0f, 0.0f, 1.0f)
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// =======================================================================
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@ -164,11 +164,11 @@ float IntersectSphere (in SRay theRay, in float theRadius)
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float aD = aDdotO * aDdotO - aDdotD * (aOdotO - theRadius * theRadius);
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if (aD > 0.f)
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if (aD > 0.0f)
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{
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float aTime = (sqrt (aD) - aDdotO) * (1.f / aDdotD);
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float aTime = (sqrt (aD) - aDdotO) * (1.0f / aDdotD);
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return aTime > 0.f ? aTime : MAXFLOAT;
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return aTime > 0.0f ? aTime : MAXFLOAT;
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}
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return MAXFLOAT;
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@ -190,7 +190,7 @@ float IntersectTriangle (in SRay theRay,
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theNorm = cross (aEdge1, aEdge0);
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vec3 aEdge2 = (1.f / dot (theNorm, theRay.Direct)) * (thePnt0 - theRay.Origin);
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vec3 aEdge2 = (1.0f / dot (theNorm, theRay.Direct)) * (thePnt0 - theRay.Origin);
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float aTime = dot (theNorm, aEdge2);
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@ -199,10 +199,10 @@ float IntersectTriangle (in SRay theRay,
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theUV.x = dot (theVec, aEdge1);
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theUV.y = dot (theVec, aEdge0);
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return bool (int(aTime >= 0.f) &
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int(theUV.x >= 0.f) &
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int(theUV.y >= 0.f) &
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int(theUV.x + theUV.y <= 1.f)) ? aTime : MAXFLOAT;
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return bool (int(aTime >= 0.0f) &
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int(theUV.x >= 0.0f) &
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int(theUV.y >= 0.0f) &
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int(theUV.x + theUV.y <= 1.0f)) ? aTime : MAXFLOAT;
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}
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//! Identifies the absence of intersection.
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@ -250,7 +250,7 @@ ivec4 ObjectNearestHit (in int theBVHOffset, in int theVrtOffset, in int theTrgO
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aTimeOut = min (aTimeMax.x, min (aTimeMax.y, aTimeMax.z));
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aTimeLft = max (aTimeMin.x, max (aTimeMin.y, aTimeMin.z));
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int aHitLft = int(aTimeLft <= aTimeOut) & int(aTimeOut >= 0.f) & int(aTimeLft <= theHit.Time);
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int aHitLft = int(aTimeLft <= aTimeOut) & int(aTimeOut >= 0.0f) & int(aTimeLft <= theHit.Time);
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aTimeMax = max (aTime0, aTime1);
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aTimeMin = min (aTime0, aTime1);
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@ -258,7 +258,7 @@ ivec4 ObjectNearestHit (in int theBVHOffset, in int theVrtOffset, in int theTrgO
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aTimeOut = min (aTimeMax.x, min (aTimeMax.y, aTimeMax.z));
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aTimeRgh = max (aTimeMin.x, max (aTimeMin.y, aTimeMin.z));
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int aHitRgh = int(aTimeRgh <= aTimeOut) & int(aTimeOut >= 0.f) & int(aTimeRgh <= theHit.Time);
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int aHitRgh = int(aTimeRgh <= aTimeOut) & int(aTimeOut >= 0.0f) & int(aTimeRgh <= theHit.Time);
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if (bool(aHitLft & aHitRgh))
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{
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@ -356,7 +356,7 @@ float ObjectAnyHit (in int theBVHOffset, in int theVrtOffset, in int theTrgOffse
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aTimeOut = min (aTimeMax.x, min (aTimeMax.y, aTimeMax.z));
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aTimeLft = max (aTimeMin.x, max (aTimeMin.y, aTimeMin.z));
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int aHitLft = int(aTimeLft <= aTimeOut) & int(aTimeOut >= 0.f) & int(aTimeLft <= theDistance);
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int aHitLft = int(aTimeLft <= aTimeOut) & int(aTimeOut >= 0.0f) & int(aTimeLft <= theDistance);
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aTimeMax = max (aTime0, aTime1);
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aTimeMin = min (aTime0, aTime1);
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@ -364,7 +364,7 @@ float ObjectAnyHit (in int theBVHOffset, in int theVrtOffset, in int theTrgOffse
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aTimeOut = min (aTimeMax.x, min (aTimeMax.y, aTimeMax.z));
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aTimeRgh = max (aTimeMin.x, max (aTimeMin.y, aTimeMin.z));
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int aHitRgh = int(aTimeRgh <= aTimeOut) & int(aTimeOut >= 0.f) & int(aTimeRgh <= theDistance);
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int aHitRgh = int(aTimeRgh <= aTimeOut) & int(aTimeOut >= 0.0f) & int(aTimeRgh <= theDistance);
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if (bool(aHitLft & aHitRgh))
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{
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@ -381,7 +381,7 @@ float ObjectAnyHit (in int theBVHOffset, in int theVrtOffset, in int theTrgOffse
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else
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{
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if (aHead == theSentinel)
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return 1.f;
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return 1.0f;
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aNode = Stack[aHead--];
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}
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@ -408,17 +408,17 @@ float ObjectAnyHit (in int theBVHOffset, in int theVrtOffset, in int theTrgOffse
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aNormal);
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if (aTime < theDistance)
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return 0.f;
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return 0.0f;
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}
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if (aHead == theSentinel)
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return 1.f;
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return 1.0f;
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aNode = Stack[aHead--];
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}
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}
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return 1.f;
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return 1.0f;
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}
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// =======================================================================
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@ -461,17 +461,17 @@ ivec4 SceneNearestHit (in SRay theRay, in vec3 theInverse, inout SIntersect theH
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SRay aNewRay;
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aNewRay.Origin = MatrixColMultiply (vec4 (theRay.Origin, 1.f),
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aNewRay.Origin = MatrixColMultiply (vec4 (theRay.Origin, 1.0f),
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aInvTransf0, aInvTransf1, aInvTransf2, aInvTransf3);
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aNewRay.Direct = MatrixColMultiply (vec4 (theRay.Direct, 0.f),
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aNewRay.Direct = MatrixColMultiply (vec4 (theRay.Direct, 0.0f),
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aInvTransf0, aInvTransf1, aInvTransf2, aInvTransf3);
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vec3 aNewInverse = 1.f / max (abs (aNewRay.Direct), SMALL);
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vec3 aNewInverse = 1.0f / max (abs (aNewRay.Direct), SMALL);
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aNewInverse.x = aNewRay.Direct.x < 0.f ? -aNewInverse.x : aNewInverse.x;
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aNewInverse.y = aNewRay.Direct.y < 0.f ? -aNewInverse.y : aNewInverse.y;
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aNewInverse.z = aNewRay.Direct.z < 0.f ? -aNewInverse.z : aNewInverse.z;
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aNewInverse.x = aNewRay.Direct.x < 0.0f ? -aNewInverse.x : aNewInverse.x;
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aNewInverse.y = aNewRay.Direct.y < 0.0f ? -aNewInverse.y : aNewInverse.y;
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aNewInverse.z = aNewRay.Direct.z < 0.0f ? -aNewInverse.z : aNewInverse.z;
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ivec4 aTriIndex = ObjectNearestHit (
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aData.y, aData.z, aData.w, aNewRay, aNewInverse, theHit, aHead);
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@ -508,7 +508,7 @@ ivec4 SceneNearestHit (in SRay theRay, in vec3 theInverse, inout SIntersect theH
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aTimeOut = min (aTimeMax.x, min (aTimeMax.y, aTimeMax.z));
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aTimeLft = max (aTimeMin.x, max (aTimeMin.y, aTimeMin.z));
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int aHitLft = int(aTimeLft <= aTimeOut) & int(aTimeOut >= 0.f) & int(aTimeLft <= theHit.Time);
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int aHitLft = int(aTimeLft <= aTimeOut) & int(aTimeOut >= 0.0f) & int(aTimeLft <= theHit.Time);
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aTime0 = (aNodeMinRgh - theRay.Origin) * theInverse;
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aTime1 = (aNodeMaxRgh - theRay.Origin) * theInverse;
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@ -519,7 +519,7 @@ ivec4 SceneNearestHit (in SRay theRay, in vec3 theInverse, inout SIntersect theH
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aTimeOut = min (aTimeMax.x, min (aTimeMax.y, aTimeMax.z));
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aTimeRgh = max (aTimeMin.x, max (aTimeMin.y, aTimeMin.z));
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int aHitRgh = int(aTimeRgh <= aTimeOut) & int(aTimeOut >= 0.f) & int(aTimeRgh <= theHit.Time);
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int aHitRgh = int(aTimeRgh <= aTimeOut) & int(aTimeOut >= 0.0f) & int(aTimeRgh <= theHit.Time);
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if (bool(aHitLft & aHitRgh))
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{
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@ -575,23 +575,23 @@ float SceneAnyHit (in SRay theRay, in vec3 theInverse, in float theDistance)
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SRay aNewRay;
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aNewRay.Origin = MatrixColMultiply (vec4 (theRay.Origin, 1.f),
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aNewRay.Origin = MatrixColMultiply (vec4 (theRay.Origin, 1.0f),
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aInvTransf0, aInvTransf1, aInvTransf2, aInvTransf3);
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aNewRay.Direct = MatrixColMultiply (vec4 (theRay.Direct, 0.f),
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aNewRay.Direct = MatrixColMultiply (vec4 (theRay.Direct, 0.0f),
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aInvTransf0, aInvTransf1, aInvTransf2, aInvTransf3);
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vec3 aNewInverse = 1.f / max (abs (aNewRay.Direct), SMALL);
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vec3 aNewInverse = 1.0f / max (abs (aNewRay.Direct), SMALL);
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aNewInverse.x = aNewRay.Direct.x < 0.f ? -aNewInverse.x : aNewInverse.x;
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aNewInverse.y = aNewRay.Direct.y < 0.f ? -aNewInverse.y : aNewInverse.y;
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aNewInverse.z = aNewRay.Direct.z < 0.f ? -aNewInverse.z : aNewInverse.z;
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aNewInverse.x = aNewRay.Direct.x < 0.0f ? -aNewInverse.x : aNewInverse.x;
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aNewInverse.y = aNewRay.Direct.y < 0.0f ? -aNewInverse.y : aNewInverse.y;
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aNewInverse.z = aNewRay.Direct.z < 0.0f ? -aNewInverse.z : aNewInverse.z;
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bool isShadow = 0.f == ObjectAnyHit (
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bool isShadow = 0.0f == ObjectAnyHit (
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aData.y, aData.z, aData.w, aNewRay, aNewInverse, theDistance, aHead);
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if (aHead < 0 || isShadow)
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return isShadow ? 0.f : 1.f;
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return isShadow ? 0.0f : 1.0f;
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aNode = Stack[aHead--];
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}
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@ -611,7 +611,7 @@ float SceneAnyHit (in SRay theRay, in vec3 theInverse, in float theDistance)
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aTimeOut = min (aTimeMax.x, min (aTimeMax.y, aTimeMax.z));
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aTimeLft = max (aTimeMin.x, max (aTimeMin.y, aTimeMin.z));
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int aHitLft = int(aTimeLft <= aTimeOut) & int(aTimeOut >= 0.f) & int(aTimeLft <= theDistance);
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int aHitLft = int(aTimeLft <= aTimeOut) & int(aTimeOut >= 0.0f) & int(aTimeLft <= theDistance);
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aTime0 = (aNodeMinRgh - theRay.Origin) * theInverse;
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aTime1 = (aNodeMaxRgh - theRay.Origin) * theInverse;
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@ -622,7 +622,7 @@ float SceneAnyHit (in SRay theRay, in vec3 theInverse, in float theDistance)
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aTimeOut = min (aTimeMax.x, min (aTimeMax.y, aTimeMax.z));
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aTimeRgh = max (aTimeMin.x, max (aTimeMin.y, aTimeMin.z));
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int aHitRgh = int(aTimeRgh <= aTimeOut) & int(aTimeOut >= 0.f) & int(aTimeRgh <= theDistance);
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int aHitRgh = int(aTimeRgh <= aTimeOut) & int(aTimeOut >= 0.0f) & int(aTimeRgh <= theDistance);
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if (bool(aHitLft & aHitRgh))
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{
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@ -639,7 +639,7 @@ float SceneAnyHit (in SRay theRay, in vec3 theInverse, in float theDistance)
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else
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{
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if (aHead < 0)
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return 1.f;
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return 1.0f;
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aNode = Stack[aHead--];
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}
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@ -647,7 +647,7 @@ float SceneAnyHit (in SRay theRay, in vec3 theInverse, in float theDistance)
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}
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}
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return 1.f;
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return 1.0f;
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}
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#define PI 3.1415926f
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@ -678,7 +678,35 @@ vec3 SmoothNormal (in vec2 theUV, in ivec4 theTriangle)
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return normalize (aNormal1 * theUV.x +
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aNormal2 * theUV.y +
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aNormal0 * (1.f - theUV.x - theUV.y));
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aNormal0 * (1.0f - theUV.x - theUV.y));
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}
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// =======================================================================
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// function : Refract
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// purpose :
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// =======================================================================
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vec3 Refract (in vec3 theInput,
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in vec3 theNormal,
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in float theRefractIndex,
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in float theInvRefractIndex)
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{
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float aNdotI = dot (theInput, theNormal);
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float anIndex = aNdotI < 0.0f
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? theInvRefractIndex
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: theRefractIndex;
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float aSquare = anIndex * anIndex * (1.0f - aNdotI * aNdotI);
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if (aSquare > 1.0f)
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{
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return reflect (theInput, theNormal);
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}
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float aNdotT = sqrt (1.0f - aSquare);
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return normalize (anIndex * theInput -
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(anIndex * aNdotI + (aNdotI < 0.0f ? aNdotT : -aNdotT)) * theNormal);
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}
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#define THRESHOLD vec3 (0.1f, 0.1f, 0.1f)
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@ -700,8 +728,8 @@ vec3 SmoothNormal (in vec2 theUV, in ivec4 theTriangle)
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// =======================================================================
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vec4 Radiance (in SRay theRay, in vec3 theInverse)
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{
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vec3 aResult = vec3 (0.f);
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vec4 aWeight = vec4 (1.f);
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vec3 aResult = vec3 (0.0f);
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vec4 aWeight = vec4 (1.0f);
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int anObjectId;
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@ -713,7 +741,7 @@ vec4 Radiance (in SRay theRay, in vec3 theInverse)
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if (aTriIndex.x == -1)
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{
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if (aWeight.w != 0.f)
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if (aWeight.w != 0.0f)
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{
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return vec4 (aResult.x,
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aResult.y,
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@ -726,7 +754,7 @@ vec4 Radiance (in SRay theRay, in vec3 theInverse)
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float aTime = IntersectSphere (theRay, uSceneRadius);
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aResult.xyz += aWeight.xyz * textureLod (uEnvironmentMapTexture,
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Latlong (theRay.Direct * aTime + theRay.Origin, uSceneRadius), 0.f).xyz;
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Latlong (theRay.Direct * aTime + theRay.Origin, uSceneRadius), 0.0f).xyz;
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}
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return vec4 (aResult.x,
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@ -737,14 +765,14 @@ vec4 Radiance (in SRay theRay, in vec3 theInverse)
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vec3 aPoint = theRay.Direct * aHit.Time + theRay.Origin;
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vec3 aAmbient = vec3 (texelFetch (
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uRaytraceMaterialTexture, MATERIAL_AMBN (aTriIndex.w)));
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vec3 aDiffuse = vec3 (texelFetch (
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uRaytraceMaterialTexture, MATERIAL_DIFF (aTriIndex.w)));
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vec4 aSpecular = vec4 (texelFetch (
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uRaytraceMaterialTexture, MATERIAL_SPEC (aTriIndex.w)));
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vec2 aOpacity = vec2 (texelFetch (
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uRaytraceMaterialTexture, MATERIAL_TRAN (aTriIndex.w)));
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vec3 aAmbient = texelFetch (
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uRaytraceMaterialTexture, MATERIAL_AMBN (aTriIndex.w)).rgb;
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vec3 aDiffuse = texelFetch (
|
||||
uRaytraceMaterialTexture, MATERIAL_DIFF (aTriIndex.w)).rgb;
|
||||
vec4 aSpecular = texelFetch (
|
||||
uRaytraceMaterialTexture, MATERIAL_SPEC (aTriIndex.w));
|
||||
vec4 aOpacity = texelFetch (
|
||||
uRaytraceMaterialTexture, MATERIAL_TRAN (aTriIndex.w));
|
||||
|
||||
vec3 aNormal = SmoothNormal (aHit.UV, aTriIndex);
|
||||
|
||||
@ -753,7 +781,7 @@ vec4 Radiance (in SRay theRay, in vec3 theInverse)
|
||||
vec4 aInvTransf2 = texelFetch (uSceneTransformTexture, anObjectId * 4 + 2);
|
||||
vec4 aInvTransf3 = texelFetch (uSceneTransformTexture, anObjectId * 4 + 3);
|
||||
|
||||
aNormal = MatrixRowMultiply (vec4 (aNormal, 0.f), aInvTransf0, aInvTransf1, aInvTransf2, aInvTransf3);
|
||||
aNormal = MatrixRowMultiply (vec4 (aNormal, 0.0f), aInvTransf0, aInvTransf1, aInvTransf2, aInvTransf3);
|
||||
aNormal = normalize (aNormal);
|
||||
|
||||
aHit.Normal = normalize (aHit.Normal);
|
||||
@ -765,47 +793,47 @@ vec4 Radiance (in SRay theRay, in vec3 theInverse)
|
||||
|
||||
float aDistance = MAXFLOAT;
|
||||
|
||||
if (aLight.w != 0.f) // point light source
|
||||
if (aLight.w != 0.0f) // point light source
|
||||
{
|
||||
aDistance = length (aLight.xyz -= aPoint);
|
||||
|
||||
aLight.xyz *= 1.f / aDistance;
|
||||
aLight.xyz *= 1.0f / aDistance;
|
||||
}
|
||||
|
||||
SRay aShadow = SRay (aPoint + aLight.xyz * uSceneEpsilon, aLight.xyz);
|
||||
|
||||
aShadow.Origin += aHit.Normal * uSceneEpsilon *
|
||||
(dot (aHit.Normal, aLight.xyz) >= 0.f ? 1.f : -1.f);
|
||||
(dot (aHit.Normal, aLight.xyz) >= 0.0f ? 1.0f : -1.0f);
|
||||
|
||||
float aVisibility = 1.f;
|
||||
float aVisibility = 1.0f;
|
||||
|
||||
if (bool(uShadowsEnable))
|
||||
{
|
||||
vec3 aInverse = 1.f / max (abs (aLight.xyz), SMALL);
|
||||
vec3 aInverse = 1.0f / max (abs (aLight.xyz), SMALL);
|
||||
|
||||
aInverse.x = aLight.x < 0.f ? -aInverse.x : aInverse.x;
|
||||
aInverse.y = aLight.y < 0.f ? -aInverse.y : aInverse.y;
|
||||
aInverse.z = aLight.z < 0.f ? -aInverse.z : aInverse.z;
|
||||
aInverse.x = aLight.x < 0.0f ? -aInverse.x : aInverse.x;
|
||||
aInverse.y = aLight.y < 0.0f ? -aInverse.y : aInverse.y;
|
||||
aInverse.z = aLight.z < 0.0f ? -aInverse.z : aInverse.z;
|
||||
|
||||
aVisibility = SceneAnyHit (aShadow, aInverse, aDistance);
|
||||
}
|
||||
|
||||
if (aVisibility > 0.f)
|
||||
if (aVisibility > 0.0f)
|
||||
{
|
||||
vec3 aIntensity = vec3 (texelFetch (
|
||||
uRaytraceLightSrcTexture, LIGHT_PWR (aLightIdx)));
|
||||
|
||||
float aLdotN = dot (aShadow.Direct, aNormal);
|
||||
|
||||
if (aOpacity.y > 0.f) // force two-sided lighting
|
||||
if (aOpacity.y > 0.0f) // force two-sided lighting
|
||||
aLdotN = abs (aLdotN); // for transparent surfaces
|
||||
|
||||
if (aLdotN > 0.f)
|
||||
if (aLdotN > 0.0f)
|
||||
{
|
||||
float aRdotV = dot (reflect (aShadow.Direct, aNormal), theRay.Direct);
|
||||
|
||||
aResult.xyz += aWeight.xyz * aOpacity.x * aIntensity *
|
||||
(aDiffuse * aLdotN + aSpecular.xyz * pow (max (0.f, aRdotV), aSpecular.w));
|
||||
(aDiffuse * aLdotN + aSpecular.xyz * pow (max (0.0f, aRdotV), aSpecular.w));
|
||||
}
|
||||
}
|
||||
}
|
||||
@ -813,29 +841,39 @@ vec4 Radiance (in SRay theRay, in vec3 theInverse)
|
||||
aResult.xyz += aWeight.xyz * uGlobalAmbient.xyz *
|
||||
aAmbient * aOpacity.x * max (abs (dot (aNormal, theRay.Direct)), 0.5f);
|
||||
|
||||
if (aOpacity.x != 1.f)
|
||||
if (aOpacity.x != 1.0f)
|
||||
{
|
||||
aWeight *= aOpacity.y;
|
||||
|
||||
theRay.Direct = Refract (theRay.Direct, aNormal, aOpacity.z, aOpacity.w);
|
||||
|
||||
theInverse = 1.0f / max (abs (theRay.Direct), SMALL);
|
||||
|
||||
theInverse.x = theRay.Direct.x < 0.0f ? -theInverse.x : theInverse.x;
|
||||
theInverse.y = theRay.Direct.y < 0.0f ? -theInverse.y : theInverse.y;
|
||||
theInverse.z = theRay.Direct.z < 0.0f ? -theInverse.z : theInverse.z;
|
||||
|
||||
aPoint += aHit.Normal * (dot (aHit.Normal, theRay.Direct) >= 0.0f ? uSceneEpsilon : -uSceneEpsilon);
|
||||
}
|
||||
else
|
||||
{
|
||||
aWeight *= bool(uReflectionsEnable) ?
|
||||
texelFetch (uRaytraceMaterialTexture, MATERIAL_REFL (aTriIndex.w)) : vec4 (0.f);
|
||||
texelFetch (uRaytraceMaterialTexture, MATERIAL_REFL (aTriIndex.w)) : vec4 (0.0f);
|
||||
|
||||
theRay.Direct = reflect (theRay.Direct, aNormal);
|
||||
|
||||
if (dot (theRay.Direct, aHit.Normal) < 0.f)
|
||||
if (dot (theRay.Direct, aHit.Normal) < 0.0f)
|
||||
{
|
||||
theRay.Direct = reflect (theRay.Direct, aHit.Normal);
|
||||
}
|
||||
|
||||
theInverse = 1.0 / max (abs (theRay.Direct), SMALL);
|
||||
theInverse = 1.0f / max (abs (theRay.Direct), SMALL);
|
||||
|
||||
theInverse.x = theRay.Direct.x < 0.0 ? -theInverse.x : theInverse.x;
|
||||
theInverse.y = theRay.Direct.y < 0.0 ? -theInverse.y : theInverse.y;
|
||||
theInverse.z = theRay.Direct.z < 0.0 ? -theInverse.z : theInverse.z;
|
||||
theInverse.x = theRay.Direct.x < 0.0f ? -theInverse.x : theInverse.x;
|
||||
theInverse.y = theRay.Direct.y < 0.0f ? -theInverse.y : theInverse.y;
|
||||
theInverse.z = theRay.Direct.z < 0.0f ? -theInverse.z : theInverse.z;
|
||||
|
||||
aPoint += aHit.Normal * (dot (aHit.Normal, theRay.Direct) >= 0.f ? uSceneEpsilon : -uSceneEpsilon);
|
||||
aPoint += aHit.Normal * (dot (aHit.Normal, theRay.Direct) >= 0.0f ? uSceneEpsilon : -uSceneEpsilon);
|
||||
}
|
||||
|
||||
if (all (lessThanEqual (aWeight.xyz, THRESHOLD)))
|
||||
|
||||
74
tests/v3d/raytrace/refraction
Normal file
74
tests/v3d/raytrace/refraction
Normal file
@ -0,0 +1,74 @@
|
||||
puts "========"
|
||||
puts "Ray Tracing - check refraction"
|
||||
puts "========"
|
||||
|
||||
vinit View1
|
||||
vsetdispmode 1
|
||||
vsetgradientbg 180 200 255 180 180 180 2
|
||||
|
||||
box wall1 1 8 8
|
||||
box wall2 1 8 8
|
||||
box wall3 16 8 1
|
||||
|
||||
psphere S1 1.5
|
||||
psphere S2 1.5
|
||||
psphere S3 1.5
|
||||
|
||||
box B1 -1.5 -1.5 -1.5 2.5 2 3
|
||||
box B2 -1.5 -1.5 -1.5 2.5 2 3
|
||||
box B3 -1.5 -1.5 -1.5 2.5 2 3
|
||||
|
||||
vdisplay S1
|
||||
vdisplay S2
|
||||
vdisplay S3
|
||||
|
||||
vdisplay B1
|
||||
vdisplay B2
|
||||
vdisplay B3
|
||||
|
||||
vdisplay wall1
|
||||
vdisplay wall2
|
||||
vdisplay wall3
|
||||
|
||||
vsetlocation S1 2 2 4
|
||||
vsetlocation S2 -2 2 4
|
||||
vsetlocation S3 -6 2 4
|
||||
|
||||
vsetlocation B1 2 6 4
|
||||
vsetlocation B2 -2 6 4
|
||||
vsetlocation B3 -6 6 4
|
||||
|
||||
vsetlocation wall1 -10 0 0
|
||||
vsetlocation wall2 5 0 0
|
||||
vsetlocation wall3 -10 0 -1
|
||||
|
||||
vsetmaterial S1 water
|
||||
vsetmaterial S2 glass
|
||||
vsetmaterial S3 diamond
|
||||
|
||||
vsetmaterial B1 water
|
||||
vsetmaterial B2 glass
|
||||
vsetmaterial B3 diamond
|
||||
|
||||
vsetmaterial wall1 stone
|
||||
vsetmaterial wall2 stone
|
||||
vsetmaterial wall3 stone
|
||||
|
||||
vsetcolor wall1 red
|
||||
vsetcolor wall2 green
|
||||
|
||||
vsettransparency S1 0.8
|
||||
vsettransparency S2 0.8
|
||||
vsettransparency S3 0.8
|
||||
|
||||
vsettransparency B1 0.8
|
||||
vsettransparency B2 0.8
|
||||
vsettransparency B3 0.8
|
||||
|
||||
vright
|
||||
vturnview 0 -0.3 0
|
||||
vfit
|
||||
vlight change 0 pos 1 1 1
|
||||
vlight add directional
|
||||
vraytrace 1
|
||||
vsetraytracemode aa=0 shad=0 refl=0
|
||||
Loading…
x
Reference in New Issue
Block a user