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++ // Copyright 2009-2021 Intel Corporation
++ // SPDX-License-Identifier: Apache-2.0
++
++ #pragma once
++
++ #include "rtcore_buffer.h"
++ #include "rtcore_quaternion.h"
++
++ RTC_NAMESPACE_BEGIN
++
++ /* Opaque scene type */
++ typedef struct RTCSceneTy* RTCScene;
++
++ /* Opaque geometry type */
++ typedef struct RTCGeometryTy* RTCGeometry;
++
++ /* Types of geometries */
++ enum RTCGeometryType
++ {
++ RTC_GEOMETRY_TYPE_TRIANGLE = 0, // triangle mesh
++ RTC_GEOMETRY_TYPE_QUAD = 1, // quad (triangle pair) mesh
++ RTC_GEOMETRY_TYPE_GRID = 2, // grid mesh
++
++ RTC_GEOMETRY_TYPE_SUBDIVISION = 8, // Catmull-Clark subdivision surface
++
++ RTC_GEOMETRY_TYPE_CONE_LINEAR_CURVE = 15, // Cone linear curves - discontinuous at edge boundaries
++ RTC_GEOMETRY_TYPE_ROUND_LINEAR_CURVE = 16, // Round (rounded cone like) linear curves
++ RTC_GEOMETRY_TYPE_FLAT_LINEAR_CURVE = 17, // flat (ribbon-like) linear curves
++
++ RTC_GEOMETRY_TYPE_ROUND_BEZIER_CURVE = 24, // round (tube-like) Bezier curves
++ RTC_GEOMETRY_TYPE_FLAT_BEZIER_CURVE = 25, // flat (ribbon-like) Bezier curves
++ RTC_GEOMETRY_TYPE_NORMAL_ORIENTED_BEZIER_CURVE = 26, // flat normal-oriented Bezier curves
++
++ RTC_GEOMETRY_TYPE_ROUND_BSPLINE_CURVE = 32, // round (tube-like) B-spline curves
++ RTC_GEOMETRY_TYPE_FLAT_BSPLINE_CURVE = 33, // flat (ribbon-like) B-spline curves
++ RTC_GEOMETRY_TYPE_NORMAL_ORIENTED_BSPLINE_CURVE = 34, // flat normal-oriented B-spline curves
++
++ RTC_GEOMETRY_TYPE_ROUND_HERMITE_CURVE = 40, // round (tube-like) Hermite curves
++ RTC_GEOMETRY_TYPE_FLAT_HERMITE_CURVE = 41, // flat (ribbon-like) Hermite curves
++ RTC_GEOMETRY_TYPE_NORMAL_ORIENTED_HERMITE_CURVE = 42, // flat normal-oriented Hermite curves
++
++ RTC_GEOMETRY_TYPE_SPHERE_POINT = 50,
++ RTC_GEOMETRY_TYPE_DISC_POINT = 51,
++ RTC_GEOMETRY_TYPE_ORIENTED_DISC_POINT = 52,
++
++ RTC_GEOMETRY_TYPE_ROUND_CATMULL_ROM_CURVE = 58, // round (tube-like) Catmull-Rom curves
++ RTC_GEOMETRY_TYPE_FLAT_CATMULL_ROM_CURVE = 59, // flat (ribbon-like) Catmull-Rom curves
++ RTC_GEOMETRY_TYPE_NORMAL_ORIENTED_CATMULL_ROM_CURVE = 60, // flat normal-oriented Catmull-Rom curves
++
++ RTC_GEOMETRY_TYPE_USER = 120, // user-defined geometry
++ RTC_GEOMETRY_TYPE_INSTANCE = 121 // scene instance
++ };
++
++ /* Interpolation modes for subdivision surfaces */
++ enum RTCSubdivisionMode
++ {
++ RTC_SUBDIVISION_MODE_NO_BOUNDARY = 0,
++ RTC_SUBDIVISION_MODE_SMOOTH_BOUNDARY = 1,
++ RTC_SUBDIVISION_MODE_PIN_CORNERS = 2,
++ RTC_SUBDIVISION_MODE_PIN_BOUNDARY = 3,
++ RTC_SUBDIVISION_MODE_PIN_ALL = 4,
++ };
++
++ /* Curve segment flags */
++ enum RTCCurveFlags
++ {
++ RTC_CURVE_FLAG_NEIGHBOR_LEFT = (1 << 0), // left segments exists
++ RTC_CURVE_FLAG_NEIGHBOR_RIGHT = (1 << 1) // right segment exists
++ };
++
++ /* Arguments for RTCBoundsFunction */
++ struct RTCBoundsFunctionArguments
++ {
++ void* geometryUserPtr;
++ unsigned int primID;
++ unsigned int timeStep;
++ struct RTCBounds* bounds_o;
++ };
++
++ /* Bounding callback function */
++ typedef void (*RTCBoundsFunction)(const struct RTCBoundsFunctionArguments* args);
++
++ /* Arguments for RTCIntersectFunctionN */
++ struct RTCIntersectFunctionNArguments
++ {
++ int* valid;
++ void* geometryUserPtr;
++ unsigned int primID;
++ struct RTCIntersectContext* context;
++ struct RTCRayHitN* rayhit;
++ unsigned int N;
++ unsigned int geomID;
++ };
++
++ /* Intersection callback function */
++ typedef void (*RTCIntersectFunctionN)(const struct RTCIntersectFunctionNArguments* args);
++
++ /* Arguments for RTCOccludedFunctionN */
++ struct RTCOccludedFunctionNArguments
++ {
++ int* valid;
++ void* geometryUserPtr;
++ unsigned int primID;
++ struct RTCIntersectContext* context;
++ struct RTCRayN* ray;
++ unsigned int N;
++ unsigned int geomID;
++ };
++
++ /* Occlusion callback function */
++ typedef void (*RTCOccludedFunctionN)(const struct RTCOccludedFunctionNArguments* args);
++
++ /* Arguments for RTCDisplacementFunctionN */
++ struct RTCDisplacementFunctionNArguments
++ {
++ void* geometryUserPtr;
++ RTCGeometry geometry;
++ unsigned int primID;
++ unsigned int timeStep;
++ const float* u;
++ const float* v;
++ const float* Ng_x;
++ const float* Ng_y;
++ const float* Ng_z;
++ float* P_x;
++ float* P_y;
++ float* P_z;
++ unsigned int N;
++ };
++
++ /* Displacement mapping callback function */
++ typedef void (*RTCDisplacementFunctionN)(const struct RTCDisplacementFunctionNArguments* args);
++
++ /* Creates a new geometry of specified type. */
++ RTC_API RTCGeometry rtcNewGeometry(RTCDevice device, enum RTCGeometryType type);
++
++ /* Retains the geometry (increments the reference count). */
++ RTC_API void rtcRetainGeometry(RTCGeometry geometry);
++
++ /* Releases the geometry (decrements the reference count) */
++ RTC_API void rtcReleaseGeometry(RTCGeometry geometry);
++
++ /* Commits the geometry. */
++ RTC_API void rtcCommitGeometry(RTCGeometry geometry);
++
++
++ /* Enables the geometry. */
++ RTC_API void rtcEnableGeometry(RTCGeometry geometry);
++
++ /* Disables the geometry. */
++ RTC_API void rtcDisableGeometry(RTCGeometry geometry);
++
++
++ /* Sets the number of motion blur time steps of the geometry. */
++ RTC_API void rtcSetGeometryTimeStepCount(RTCGeometry geometry, unsigned int timeStepCount);
++
++ /* Sets the motion blur time range of the geometry. */
++ RTC_API void rtcSetGeometryTimeRange(RTCGeometry geometry, float startTime, float endTime);
++
++ /* Sets the number of vertex attributes of the geometry. */
++ RTC_API void rtcSetGeometryVertexAttributeCount(RTCGeometry geometry, unsigned int vertexAttributeCount);
++
++ /* Sets the ray mask of the geometry. */
++ RTC_API void rtcSetGeometryMask(RTCGeometry geometry, unsigned int mask);
++
++ /* Sets the build quality of the geometry. */
++ RTC_API void rtcSetGeometryBuildQuality(RTCGeometry geometry, enum RTCBuildQuality quality);
++
++ /* Sets the maximal curve or point radius scale allowed by min-width feature. */
++ RTC_API void rtcSetGeometryMaxRadiusScale(RTCGeometry geometry, float maxRadiusScale);
++
++
++ /* Sets a geometry buffer. */
++ RTC_API void rtcSetGeometryBuffer(RTCGeometry geometry, enum RTCBufferType type, unsigned int slot, enum RTCFormat format, RTCBuffer buffer, size_t byteOffset, size_t byteStride, size_t itemCount);
++
++ /* Sets a shared geometry buffer. */
++ RTC_API void rtcSetSharedGeometryBuffer(RTCGeometry geometry, enum RTCBufferType type, unsigned int slot, enum RTCFormat format, const void* ptr, size_t byteOffset, size_t byteStride, size_t itemCount);
++
++ /* Creates and sets a new geometry buffer. */
++ RTC_API void* rtcSetNewGeometryBuffer(RTCGeometry geometry, enum RTCBufferType type, unsigned int slot, enum RTCFormat format, size_t byteStride, size_t itemCount);
++
++ /* Returns the pointer to the data of a buffer. */
++ RTC_API void* rtcGetGeometryBufferData(RTCGeometry geometry, enum RTCBufferType type, unsigned int slot);
++
++ /* Updates a geometry buffer. */
++ RTC_API void rtcUpdateGeometryBuffer(RTCGeometry geometry, enum RTCBufferType type, unsigned int slot);
++
++
++ /* Sets the intersection filter callback function of the geometry. */
++ RTC_API void rtcSetGeometryIntersectFilterFunction(RTCGeometry geometry, RTCFilterFunctionN filter);
++
++ /* Sets the occlusion filter callback function of the geometry. */
++ RTC_API void rtcSetGeometryOccludedFilterFunction(RTCGeometry geometry, RTCFilterFunctionN filter);
++
++ /* Sets the user-defined data pointer of the geometry. */
++ RTC_API void rtcSetGeometryUserData(RTCGeometry geometry, void* ptr);
++
++ /* Gets the user-defined data pointer of the geometry. */
++ RTC_API void* rtcGetGeometryUserData(RTCGeometry geometry);
++
++ /* Set the point query callback function of a geometry. */
++ RTC_API void rtcSetGeometryPointQueryFunction(RTCGeometry geometry, RTCPointQueryFunction pointQuery);
++
++ /* Sets the number of primitives of a user geometry. */
++ RTC_API void rtcSetGeometryUserPrimitiveCount(RTCGeometry geometry, unsigned int userPrimitiveCount);
++
++ /* Sets the bounding callback function to calculate bounding boxes for user primitives. */
++ RTC_API void rtcSetGeometryBoundsFunction(RTCGeometry geometry, RTCBoundsFunction bounds, void* userPtr);
++
++ /* Set the intersect callback function of a user geometry. */
++ RTC_API void rtcSetGeometryIntersectFunction(RTCGeometry geometry, RTCIntersectFunctionN intersect);
++
++ /* Set the occlusion callback function of a user geometry. */
++ RTC_API void rtcSetGeometryOccludedFunction(RTCGeometry geometry, RTCOccludedFunctionN occluded);
++
++ /* Invokes the intersection filter from the intersection callback function. */
++ RTC_API void rtcFilterIntersection(const struct RTCIntersectFunctionNArguments* args, const struct RTCFilterFunctionNArguments* filterArgs);
++
++ /* Invokes the occlusion filter from the occlusion callback function. */
++ RTC_API void rtcFilterOcclusion(const struct RTCOccludedFunctionNArguments* args, const struct RTCFilterFunctionNArguments* filterArgs);
++
++
++ /* Sets the instanced scene of an instance geometry. */
++ RTC_API void rtcSetGeometryInstancedScene(RTCGeometry geometry, RTCScene scene);
++
++ /* Sets the transformation of an instance for the specified time step. */
++ RTC_API void rtcSetGeometryTransform(RTCGeometry geometry, unsigned int timeStep, enum RTCFormat format, const void* xfm);
++
++ /* Sets the transformation quaternion of an instance for the specified time step. */
++ RTC_API void rtcSetGeometryTransformQuaternion(RTCGeometry geometry, unsigned int timeStep, const struct RTCQuaternionDecomposition* qd);
++
++ /* Returns the interpolated transformation of an instance for the specified time. */
++ RTC_API void rtcGetGeometryTransform(RTCGeometry geometry, float time, enum RTCFormat format, void* xfm);
++
++
++ /* Sets the uniform tessellation rate of the geometry. */
++ RTC_API void rtcSetGeometryTessellationRate(RTCGeometry geometry, float tessellationRate);
++
++ /* Sets the number of topologies of a subdivision surface. */
++ RTC_API void rtcSetGeometryTopologyCount(RTCGeometry geometry, unsigned int topologyCount);
++
++ /* Sets the subdivision interpolation mode. */
++ RTC_API void rtcSetGeometrySubdivisionMode(RTCGeometry geometry, unsigned int topologyID, enum RTCSubdivisionMode mode);
++
++ /* Binds a vertex attribute to a topology of the geometry. */
++ RTC_API void rtcSetGeometryVertexAttributeTopology(RTCGeometry geometry, unsigned int vertexAttributeID, unsigned int topologyID);
++
++ /* Sets the displacement callback function of a subdivision surface. */
++ RTC_API void rtcSetGeometryDisplacementFunction(RTCGeometry geometry, RTCDisplacementFunctionN displacement);
++
++ /* Returns the first half edge of a face. */
++ RTC_API unsigned int rtcGetGeometryFirstHalfEdge(RTCGeometry geometry, unsigned int faceID);
++
++ /* Returns the face the half edge belongs to. */
++ RTC_API unsigned int rtcGetGeometryFace(RTCGeometry geometry, unsigned int edgeID);
++
++ /* Returns next half edge. */
++ RTC_API unsigned int rtcGetGeometryNextHalfEdge(RTCGeometry geometry, unsigned int edgeID);
++
++ /* Returns previous half edge. */
++ RTC_API unsigned int rtcGetGeometryPreviousHalfEdge(RTCGeometry geometry, unsigned int edgeID);
++
++ /* Returns opposite half edge. */
++ RTC_API unsigned int rtcGetGeometryOppositeHalfEdge(RTCGeometry geometry, unsigned int topologyID, unsigned int edgeID);
++
++
++ /* Arguments for rtcInterpolate */
++ struct RTCInterpolateArguments
++ {
++ RTCGeometry geometry;
++ unsigned int primID;
++ float u;
++ float v;
++ enum RTCBufferType bufferType;
++ unsigned int bufferSlot;
++ float* P;
++ float* dPdu;
++ float* dPdv;
++ float* ddPdudu;
++ float* ddPdvdv;
++ float* ddPdudv;
++ unsigned int valueCount;
++ };
++
++ /* Interpolates vertex data to some u/v location and optionally calculates all derivatives. */
++ RTC_API void rtcInterpolate(const struct RTCInterpolateArguments* args);
++
++ /* Interpolates vertex data to some u/v location. */
++ RTC_FORCEINLINE void rtcInterpolate0(RTCGeometry geometry, unsigned int primID, float u, float v, enum RTCBufferType bufferType, unsigned int bufferSlot, float* P, unsigned int valueCount)
++ {
++ struct RTCInterpolateArguments args;
++ args.geometry = geometry;
++ args.primID = primID;
++ args.u = u;
++ args.v = v;
++ args.bufferType = bufferType;
++ args.bufferSlot = bufferSlot;
++ args.P = P;
++ args.dPdu = NULL;
++ args.dPdv = NULL;
++ args.ddPdudu = NULL;
++ args.ddPdvdv = NULL;
++ args.ddPdudv = NULL;
++ args.valueCount = valueCount;
++ rtcInterpolate(&args);
++ }
++
++ /* Interpolates vertex data to some u/v location and calculates first order derivatives. */
++ RTC_FORCEINLINE void rtcInterpolate1(RTCGeometry geometry, unsigned int primID, float u, float v, enum RTCBufferType bufferType, unsigned int bufferSlot,
++ float* P, float* dPdu, float* dPdv, unsigned int valueCount)
++ {
++ struct RTCInterpolateArguments args;
++ args.geometry = geometry;
++ args.primID = primID;
++ args.u = u;
++ args.v = v;
++ args.bufferType = bufferType;
++ args.bufferSlot = bufferSlot;
++ args.P = P;
++ args.dPdu = dPdu;
++ args.dPdv = dPdv;
++ args.ddPdudu = NULL;
++ args.ddPdvdv = NULL;
++ args.ddPdudv = NULL;
++ args.valueCount = valueCount;
++ rtcInterpolate(&args);
++ }
++
++ /* Interpolates vertex data to some u/v location and calculates first and second order derivatives. */
++ RTC_FORCEINLINE void rtcInterpolate2(RTCGeometry geometry, unsigned int primID, float u, float v, enum RTCBufferType bufferType, unsigned int bufferSlot,
++ float* P, float* dPdu, float* dPdv, float* ddPdudu, float* ddPdvdv, float* ddPdudv, unsigned int valueCount)
++ {
++ struct RTCInterpolateArguments args;
++ args.geometry = geometry;
++ args.primID = primID;
++ args.u = u;
++ args.v = v;
++ args.bufferType = bufferType;
++ args.bufferSlot = bufferSlot;
++ args.P = P;
++ args.dPdu = dPdu;
++ args.dPdv = dPdv;
++ args.ddPdudu = ddPdudu;
++ args.ddPdvdv = ddPdvdv;
++ args.ddPdudv = ddPdudv;
++ args.valueCount = valueCount;
++ rtcInterpolate(&args);
++ }
++
++ /* Arguments for rtcInterpolateN */
++ struct RTCInterpolateNArguments
++ {
++ RTCGeometry geometry;
++ const void* valid;
++ const unsigned int* primIDs;
++ const float* u;
++ const float* v;
++ unsigned int N;
++ enum RTCBufferType bufferType;
++ unsigned int bufferSlot;
++ float* P;
++ float* dPdu;
++ float* dPdv;
++ float* ddPdudu;
++ float* ddPdvdv;
++ float* ddPdudv;
++ unsigned int valueCount;
++ };
++
++ /* Interpolates vertex data to an array of u/v locations. */
++ RTC_API void rtcInterpolateN(const struct RTCInterpolateNArguments* args);
++
++ /* RTCGrid primitive for grid mesh */
++ struct RTCGrid
++ {
++ unsigned int startVertexID;
++ unsigned int stride;
++ unsigned short width,height; // max is a 32k x 32k grid
++ };
++
++ RTC_NAMESPACE_END
++
++