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intern/cycles/kernel/geom/triangle_intersect.h
| Show All 31 Lines | ccl_device_inline bool triangle_intersect(KernelGlobals kg, | ||||
| float3 dir, | float3 dir, | ||||
| float tmax, | float tmax, | ||||
| uint visibility, | uint visibility, | ||||
| int object, | int object, | ||||
| int prim_addr) | int prim_addr) | ||||
| { | { | ||||
| const int prim = kernel_tex_fetch(__prim_index, prim_addr); | const int prim = kernel_tex_fetch(__prim_index, prim_addr); | ||||
| const uint tri_vindex = kernel_tex_fetch(__tri_vindex, prim).w; | const uint tri_vindex = kernel_tex_fetch(__tri_vindex, prim).w; | ||||
| #if defined(__KERNEL_SSE2__) && defined(__KERNEL_SSE__) | |||||
| const ssef *ssef_verts = (ssef *)&kg->__tri_verts.data[tri_vindex]; | |||||
| #else | |||||
| const float3 tri_a = kernel_tex_fetch(__tri_verts, tri_vindex + 0), | const float3 tri_a = kernel_tex_fetch(__tri_verts, tri_vindex + 0), | ||||
| tri_b = kernel_tex_fetch(__tri_verts, tri_vindex + 1), | tri_b = kernel_tex_fetch(__tri_verts, tri_vindex + 1), | ||||
| tri_c = kernel_tex_fetch(__tri_verts, tri_vindex + 2); | tri_c = kernel_tex_fetch(__tri_verts, tri_vindex + 2); | ||||
| #endif | |||||
| float t, u, v; | float t, u, v; | ||||
| if (ray_triangle_intersect(P, | if (ray_triangle_intersect(P, dir, tmax, tri_a, tri_b, tri_c, &u, &v, &t)) { | ||||
| dir, | |||||
| tmax, | |||||
| #if defined(__KERNEL_SSE2__) && defined(__KERNEL_SSE__) | |||||
| ssef_verts, | |||||
| #else | |||||
| tri_a, | |||||
| tri_b, | |||||
| tri_c, | |||||
| #endif | |||||
| &u, | |||||
| &v, | |||||
| &t)) { | |||||
| #ifdef __VISIBILITY_FLAG__ | #ifdef __VISIBILITY_FLAG__ | ||||
| /* Visibility flag test. we do it here under the assumption | /* Visibility flag test. we do it here under the assumption | ||||
| * that most triangles are culled by node flags. | * that most triangles are culled by node flags. | ||||
| */ | */ | ||||
| if (kernel_tex_fetch(__prim_visibility, prim_addr) & visibility) | if (kernel_tex_fetch(__prim_visibility, prim_addr) & visibility) | ||||
| #endif | #endif | ||||
| { | { | ||||
| isect->object = (object == OBJECT_NONE) ? kernel_tex_fetch(__prim_object, prim_addr) : | isect->object = (object == OBJECT_NONE) ? kernel_tex_fetch(__prim_object, prim_addr) : | ||||
| Show All 32 Lines | ccl_device_inline bool triangle_intersect_local(KernelGlobals kg, | ||||
| if (object == OBJECT_NONE) { | if (object == OBJECT_NONE) { | ||||
| if (kernel_tex_fetch(__prim_object, prim_addr) != local_object) { | if (kernel_tex_fetch(__prim_object, prim_addr) != local_object) { | ||||
| return false; | return false; | ||||
| } | } | ||||
| } | } | ||||
| const int prim = kernel_tex_fetch(__prim_index, prim_addr); | const int prim = kernel_tex_fetch(__prim_index, prim_addr); | ||||
| const uint tri_vindex = kernel_tex_fetch(__tri_vindex, prim).w; | const uint tri_vindex = kernel_tex_fetch(__tri_vindex, prim).w; | ||||
| # if defined(__KERNEL_SSE2__) && defined(__KERNEL_SSE__) | |||||
| const ssef *ssef_verts = (ssef *)&kg->__tri_verts.data[tri_vindex]; | |||||
| # else | |||||
| const float3 tri_a = kernel_tex_fetch(__tri_verts, tri_vindex + 0), | const float3 tri_a = kernel_tex_fetch(__tri_verts, tri_vindex + 0), | ||||
| tri_b = kernel_tex_fetch(__tri_verts, tri_vindex + 1), | tri_b = kernel_tex_fetch(__tri_verts, tri_vindex + 1), | ||||
| tri_c = kernel_tex_fetch(__tri_verts, tri_vindex + 2); | tri_c = kernel_tex_fetch(__tri_verts, tri_vindex + 2); | ||||
| # endif | |||||
| float t, u, v; | float t, u, v; | ||||
| if (!ray_triangle_intersect(P, | if (!ray_triangle_intersect(P, dir, tmax, tri_a, tri_b, tri_c, &u, &v, &t)) { | ||||
| dir, | |||||
| tmax, | |||||
| # if defined(__KERNEL_SSE2__) && defined(__KERNEL_SSE__) | |||||
| ssef_verts, | |||||
| # else | |||||
| tri_a, | |||||
| tri_b, | |||||
| tri_c, | |||||
| # endif | |||||
| &u, | |||||
| &v, | |||||
| &t)) { | |||||
| return false; | return false; | ||||
| } | } | ||||
| /* If no actual hit information is requested, just return here. */ | /* If no actual hit information is requested, just return here. */ | ||||
| if (max_hits == 0) { | if (max_hits == 0) { | ||||
| return true; | return true; | ||||
| } | } | ||||
| Show All 35 Lines | ccl_device_inline bool triangle_intersect_local(KernelGlobals kg, | ||||
| isect->prim = prim; | isect->prim = prim; | ||||
| isect->object = local_object; | isect->object = local_object; | ||||
| isect->type = PRIMITIVE_TRIANGLE; | isect->type = PRIMITIVE_TRIANGLE; | ||||
| isect->u = u; | isect->u = u; | ||||
| isect->v = v; | isect->v = v; | ||||
| isect->t = t; | isect->t = t; | ||||
| /* Record geometric normal. */ | /* Record geometric normal. */ | ||||
| # if defined(__KERNEL_SSE2__) && defined(__KERNEL_SSE__) | |||||
| const float3 tri_a = kernel_tex_fetch(__tri_verts, tri_vindex + 0), | |||||
| tri_b = kernel_tex_fetch(__tri_verts, tri_vindex + 1), | |||||
| tri_c = kernel_tex_fetch(__tri_verts, tri_vindex + 2); | |||||
| # endif | |||||
| local_isect->Ng[hit] = normalize(cross(tri_b - tri_a, tri_c - tri_a)); | local_isect->Ng[hit] = normalize(cross(tri_b - tri_a, tri_c - tri_a)); | ||||
| return false; | return false; | ||||
| } | } | ||||
| #endif /* __BVH_LOCAL__ */ | #endif /* __BVH_LOCAL__ */ | ||||
| /* Refine triangle intersection to more precise hit point. For rays that travel | /* Refine triangle intersection to more precise hit point. For rays that travel | ||||
| * far the precision is often not so good, this reintersects the primitive from | * far the precision is often not so good, this reintersects the primitive from | ||||
| ▲ Show 20 Lines • Show All 119 Lines • Show Last 20 Lines | |||||