diff options
Diffstat (limited to 'intern/cycles/kernel/geom/geom_triangle.h')
| -rw-r--r-- | intern/cycles/kernel/geom/geom_triangle.h | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/intern/cycles/kernel/geom/geom_triangle.h b/intern/cycles/kernel/geom/geom_triangle.h index 105aee8da15..300227c38e6 100644 --- a/intern/cycles/kernel/geom/geom_triangle.h +++ b/intern/cycles/kernel/geom/geom_triangle.h @@ -149,6 +149,53 @@ ccl_device float triangle_attribute_float(KernelGlobals *kg, const ShaderData *s } } +ccl_device float2 triangle_attribute_float2(KernelGlobals *kg, const ShaderData *sd, const AttributeDescriptor desc, float2 *dx, float2 *dy) +{ + if(desc.element == ATTR_ELEMENT_FACE) { + if(dx) *dx = make_float2(0.0f, 0.0f); + if(dy) *dy = make_float2(0.0f, 0.0f); + + return kernel_tex_fetch(__attributes_float2, desc.offset + sd->prim); + } + else if(desc.element == ATTR_ELEMENT_VERTEX || desc.element == ATTR_ELEMENT_VERTEX_MOTION) { + uint4 tri_vindex = kernel_tex_fetch(__tri_vindex, sd->prim); + + float2 f0 = kernel_tex_fetch(__attributes_float2, desc.offset + tri_vindex.x); + float2 f1 = kernel_tex_fetch(__attributes_float2, desc.offset + tri_vindex.y); + float2 f2 = kernel_tex_fetch(__attributes_float2, desc.offset + tri_vindex.z); + +#ifdef __RAY_DIFFERENTIALS__ + if(dx) *dx = sd->du.dx*f0 + sd->dv.dx*f1 - (sd->du.dx + sd->dv.dx)*f2; + if(dy) *dy = sd->du.dy*f0 + sd->dv.dy*f1 - (sd->du.dy + sd->dv.dy)*f2; +#endif + + return sd->u*f0 + sd->v*f1 + (1.0f - sd->u - sd->v)*f2; + } + else if(desc.element == ATTR_ELEMENT_CORNER) { + int tri = desc.offset + sd->prim*3; + float2 f0, f1, f2; + + if(desc.element == ATTR_ELEMENT_CORNER) { + f0 = kernel_tex_fetch(__attributes_float2, tri + 0); + f1 = kernel_tex_fetch(__attributes_float2, tri + 1); + f2 = kernel_tex_fetch(__attributes_float2, tri + 2); + } + +#ifdef __RAY_DIFFERENTIALS__ + if(dx) *dx = sd->du.dx*f0 + sd->dv.dx*f1 - (sd->du.dx + sd->dv.dx)*f2; + if(dy) *dy = sd->du.dy*f0 + sd->dv.dy*f1 - (sd->du.dy + sd->dv.dy)*f2; +#endif + + return sd->u*f0 + sd->v*f1 + (1.0f - sd->u - sd->v)*f2; + } + else { + if(dx) *dx = make_float2(0.0f, 0.0f); + if(dy) *dy = make_float2(0.0f, 0.0f); + + return make_float2(0.0f, 0.0f); + } +} + ccl_device float3 triangle_attribute_float3(KernelGlobals *kg, const ShaderData *sd, const AttributeDescriptor desc, float3 *dx, float3 *dy) { if(desc.element == ATTR_ELEMENT_FACE) { |