diff options
Diffstat (limited to 'intern/cycles/kernel/geom/geom_volume.h')
| -rw-r--r-- | intern/cycles/kernel/geom/geom_volume.h | 56 |
1 files changed, 31 insertions, 25 deletions
diff --git a/intern/cycles/kernel/geom/geom_volume.h b/intern/cycles/kernel/geom/geom_volume.h index 1977d263ece..96cf35a40dc 100644 --- a/intern/cycles/kernel/geom/geom_volume.h +++ b/intern/cycles/kernel/geom/geom_volume.h @@ -33,41 +33,47 @@ ccl_device_inline float3 volume_normalized_position(KernelGlobals *kg, const ShaderData *sd, float3 P) { - /* todo: optimize this so it's just a single matrix multiplication when - * possible (not motion blur), or perhaps even just translation + scale */ - const AttributeDescriptor desc = find_attribute(kg, sd, ATTR_STD_GENERATED_TRANSFORM); + /* todo: optimize this so it's just a single matrix multiplication when + * possible (not motion blur), or perhaps even just translation + scale */ + const AttributeDescriptor desc = find_attribute(kg, sd, ATTR_STD_GENERATED_TRANSFORM); - object_inverse_position_transform(kg, sd, &P); + object_inverse_position_transform(kg, sd, &P); - if(desc.offset != ATTR_STD_NOT_FOUND) { - Transform tfm = primitive_attribute_matrix(kg, sd, desc); - P = transform_point(&tfm, P); - } + if (desc.offset != ATTR_STD_NOT_FOUND) { + Transform tfm = primitive_attribute_matrix(kg, sd, desc); + P = transform_point(&tfm, P); + } - return P; + return P; } -ccl_device float volume_attribute_float(KernelGlobals *kg, const ShaderData *sd, const AttributeDescriptor desc) +ccl_device float volume_attribute_float(KernelGlobals *kg, + const ShaderData *sd, + const AttributeDescriptor desc) { - float3 P = volume_normalized_position(kg, sd, sd->P); - InterpolationType interp = (sd->flag & SD_VOLUME_CUBIC)? INTERPOLATION_CUBIC: INTERPOLATION_NONE; - float4 r = kernel_tex_image_interp_3d(kg, desc.offset, P.x, P.y, P.z, interp); - return average(float4_to_float3(r)); + float3 P = volume_normalized_position(kg, sd, sd->P); + InterpolationType interp = (sd->flag & SD_VOLUME_CUBIC) ? INTERPOLATION_CUBIC : + INTERPOLATION_NONE; + float4 r = kernel_tex_image_interp_3d(kg, desc.offset, P.x, P.y, P.z, interp); + return average(float4_to_float3(r)); } -ccl_device float3 volume_attribute_float3(KernelGlobals *kg, const ShaderData *sd, const AttributeDescriptor desc) +ccl_device float3 volume_attribute_float3(KernelGlobals *kg, + const ShaderData *sd, + const AttributeDescriptor desc) { - float3 P = volume_normalized_position(kg, sd, sd->P); - InterpolationType interp = (sd->flag & SD_VOLUME_CUBIC)? INTERPOLATION_CUBIC: INTERPOLATION_NONE; - float4 r = kernel_tex_image_interp_3d(kg, desc.offset, P.x, P.y, P.z, interp); + float3 P = volume_normalized_position(kg, sd, sd->P); + InterpolationType interp = (sd->flag & SD_VOLUME_CUBIC) ? INTERPOLATION_CUBIC : + INTERPOLATION_NONE; + float4 r = kernel_tex_image_interp_3d(kg, desc.offset, P.x, P.y, P.z, interp); - if(r.w > 1e-6f && r.w != 1.0f) { - /* For RGBA colors, unpremultiply after interpolation. */ - return float4_to_float3(r) / r.w; - } - else { - return float4_to_float3(r); - } + if (r.w > 1e-6f && r.w != 1.0f) { + /* For RGBA colors, unpremultiply after interpolation. */ + return float4_to_float3(r) / r.w; + } + else { + return float4_to_float3(r); + } } #endif |