diff options
Diffstat (limited to 'intern/cycles/kernel/geom/geom_subd_triangle.h')
| -rw-r--r-- | intern/cycles/kernel/geom/geom_subd_triangle.h | 124 |
1 files changed, 104 insertions, 20 deletions
diff --git a/intern/cycles/kernel/geom/geom_subd_triangle.h b/intern/cycles/kernel/geom/geom_subd_triangle.h index 8d5b3c12833..81bac6e6ee1 100644 --- a/intern/cycles/kernel/geom/geom_subd_triangle.h +++ b/intern/cycles/kernel/geom/geom_subd_triangle.h @@ -382,13 +382,7 @@ ccl_device_noinline float3 subd_triangle_attribute_float3(KernelGlobals *kg, float2 p = dpdu * sd->u + dpdv * sd->v + uv[2]; float3 a, dads, dadt; - - if (desc.element == ATTR_ELEMENT_CORNER_BYTE) { - a = patch_eval_uchar4(kg, sd, desc.offset, patch, p.x, p.y, 0, &dads, &dadt); - } - else { - a = patch_eval_float3(kg, sd, desc.offset, patch, p.x, p.y, 0, &dads, &dadt); - } + a = patch_eval_float3(kg, sd, desc.offset, patch, p.x, p.y, 0, &dads, &dadt); # ifdef __RAY_DIFFERENTIALS__ if (dx || dy) { @@ -460,7 +454,7 @@ ccl_device_noinline float3 subd_triangle_attribute_float3(KernelGlobals *kg, return sd->u * a + sd->v * b + (1.0f - sd->u - sd->v) * c; } - else if (desc.element == ATTR_ELEMENT_CORNER || desc.element == ATTR_ELEMENT_CORNER_BYTE) { + else if (desc.element == ATTR_ELEMENT_CORNER) { float2 uv[3]; subd_triangle_patch_uv(kg, sd, uv); @@ -469,18 +463,10 @@ ccl_device_noinline float3 subd_triangle_attribute_float3(KernelGlobals *kg, float3 f0, f1, f2, f3; - if (desc.element == ATTR_ELEMENT_CORNER) { - f0 = float4_to_float3(kernel_tex_fetch(__attributes_float3, corners[0] + desc.offset)); - f1 = float4_to_float3(kernel_tex_fetch(__attributes_float3, corners[1] + desc.offset)); - f2 = float4_to_float3(kernel_tex_fetch(__attributes_float3, corners[2] + desc.offset)); - f3 = float4_to_float3(kernel_tex_fetch(__attributes_float3, corners[3] + desc.offset)); - } - else { - f0 = color_byte_to_float(kernel_tex_fetch(__attributes_uchar4, corners[0] + desc.offset)); - f1 = color_byte_to_float(kernel_tex_fetch(__attributes_uchar4, corners[1] + desc.offset)); - f2 = color_byte_to_float(kernel_tex_fetch(__attributes_uchar4, corners[2] + desc.offset)); - f3 = color_byte_to_float(kernel_tex_fetch(__attributes_uchar4, corners[3] + desc.offset)); - } + f0 = float4_to_float3(kernel_tex_fetch(__attributes_float3, corners[0] + desc.offset)); + f1 = float4_to_float3(kernel_tex_fetch(__attributes_float3, corners[1] + desc.offset)); + f2 = float4_to_float3(kernel_tex_fetch(__attributes_float3, corners[2] + desc.offset)); + f3 = float4_to_float3(kernel_tex_fetch(__attributes_float3, corners[3] + desc.offset)); if (subd_triangle_patch_num_corners(kg, patch) != 4) { f1 = (f1 + f0) * 0.5f; @@ -510,4 +496,102 @@ ccl_device_noinline float3 subd_triangle_attribute_float3(KernelGlobals *kg, } } +ccl_device_noinline float4 subd_triangle_attribute_float4(KernelGlobals *kg, + const ShaderData *sd, + const AttributeDescriptor desc, + float4 *dx, + float4 *dy) +{ + int patch = subd_triangle_patch(kg, sd); + +#ifdef __PATCH_EVAL__ + if (desc.flags & ATTR_SUBDIVIDED) { + float2 uv[3]; + subd_triangle_patch_uv(kg, sd, uv); + + float2 dpdu = uv[0] - uv[2]; + float2 dpdv = uv[1] - uv[2]; + + /* p is [s, t] */ + float2 p = dpdu * sd->u + dpdv * sd->v + uv[2]; + + float4 dads, dadt; + + float4 a = patch_eval_uchar4(kg, sd, desc.offset, patch, p.x, p.y, 0, &dads, &dadt); + +# ifdef __RAY_DIFFERENTIALS__ + if (dx || dy) { + float dsdu = dpdu.x; + float dtdu = dpdu.y; + float dsdv = dpdv.x; + float dtdv = dpdv.y; + + if (dx) { + float dudx = sd->du.dx; + float dvdx = sd->dv.dx; + + float dsdx = dsdu * dudx + dsdv * dvdx; + float dtdx = dtdu * dudx + dtdv * dvdx; + + *dx = dads * dsdx + dadt * dtdx; + } + if (dy) { + float dudy = sd->du.dy; + float dvdy = sd->dv.dy; + + float dsdy = dsdu * dudy + dsdv * dvdy; + float dtdy = dtdu * dudy + dtdv * dvdy; + + *dy = dads * dsdy + dadt * dtdy; + } + } +# endif + return a; + } + else +#endif /* __PATCH_EVAL__ */ + if (desc.element == ATTR_ELEMENT_CORNER_BYTE) { + float2 uv[3]; + subd_triangle_patch_uv(kg, sd, uv); + + int corners[4]; + subd_triangle_patch_corners(kg, patch, corners); + + float4 f0 = color_uchar4_to_float4( + kernel_tex_fetch(__attributes_uchar4, corners[0] + desc.offset)); + float4 f1 = color_uchar4_to_float4( + kernel_tex_fetch(__attributes_uchar4, corners[1] + desc.offset)); + float4 f2 = color_uchar4_to_float4( + kernel_tex_fetch(__attributes_uchar4, corners[2] + desc.offset)); + float4 f3 = color_uchar4_to_float4( + kernel_tex_fetch(__attributes_uchar4, corners[3] + desc.offset)); + + if (subd_triangle_patch_num_corners(kg, patch) != 4) { + f1 = (f1 + f0) * 0.5f; + f3 = (f3 + f0) * 0.5f; + } + + float4 a = mix(mix(f0, f1, uv[0].x), mix(f3, f2, uv[0].x), uv[0].y); + float4 b = mix(mix(f0, f1, uv[1].x), mix(f3, f2, uv[1].x), uv[1].y); + float4 c = mix(mix(f0, f1, uv[2].x), mix(f3, f2, uv[2].x), uv[2].y); + +#ifdef __RAY_DIFFERENTIALS__ + if (dx) + *dx = sd->du.dx * a + sd->dv.dx * b - (sd->du.dx + sd->dv.dx) * c; + if (dy) + *dy = sd->du.dy * a + sd->dv.dy * b - (sd->du.dy + sd->dv.dy) * c; +#endif + + return sd->u * a + sd->v * b + (1.0f - sd->u - sd->v) * c; + } + else { + if (dx) + *dx = make_float4(0.0f, 0.0f, 0.0f, 0.0f); + if (dy) + *dy = make_float4(0.0f, 0.0f, 0.0f, 0.0f); + + return make_float4(0.0f, 0.0f, 0.0f, 0.0f); + } +} + CCL_NAMESPACE_END |