Cycles: remove prefix from source code file names

Remove prefix of filenames that is the same as the folder name. This used
to help when #includes were using individual files, but now they are always
relative to the cycles root directory and so the prefixes are redundant.

For patches and branches, git merge and rebase should be able to detect the
renames and move over code to the right file.

1 files changed, 601 insertions, 0 deletions

diff --git a/intern/cycles/kernel/svm/types.h b/intern/cycles/kernel/svm/types.h
new file mode 100644
index 00000000000..8c95c571815
--- /dev/null
+++ b/intern/cycles/kernel/svm/types.h
@@ -0,0 +1,601 @@
+/*
+ * Copyright 2011-2013 Blender Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+CCL_NAMESPACE_BEGIN
+
+/* Stack */
+
+/* SVM stack has a fixed size */
+#define SVM_STACK_SIZE 255
+/* SVM stack offsets with this value indicate that it's not on the stack */
+#define SVM_STACK_INVALID 255
+
+#define SVM_BUMP_EVAL_STATE_SIZE 9
+
+/* Nodes */
+
+typedef enum ShaderNodeType {
+  NODE_END = 0,
+  NODE_SHADER_JUMP,
+  NODE_CLOSURE_BSDF,
+  NODE_CLOSURE_EMISSION,
+  NODE_CLOSURE_BACKGROUND,
+  NODE_CLOSURE_SET_WEIGHT,
+  NODE_CLOSURE_WEIGHT,
+  NODE_EMISSION_WEIGHT,
+  NODE_MIX_CLOSURE,
+  NODE_JUMP_IF_ZERO,
+  NODE_JUMP_IF_ONE,
+  NODE_GEOMETRY,
+  NODE_CONVERT,
+  NODE_TEX_COORD,
+  NODE_VALUE_F,
+  NODE_VALUE_V,
+  NODE_ATTR,
+  NODE_VERTEX_COLOR,
+  NODE_GEOMETRY_BUMP_DX,
+  NODE_GEOMETRY_BUMP_DY,
+  NODE_SET_DISPLACEMENT,
+  NODE_DISPLACEMENT,
+  NODE_VECTOR_DISPLACEMENT,
+  NODE_TEX_IMAGE,
+  NODE_TEX_IMAGE_BOX,
+  NODE_TEX_NOISE,
+  NODE_SET_BUMP,
+  NODE_ATTR_BUMP_DX,
+  NODE_ATTR_BUMP_DY,
+  NODE_VERTEX_COLOR_BUMP_DX,
+  NODE_VERTEX_COLOR_BUMP_DY,
+  NODE_TEX_COORD_BUMP_DX,
+  NODE_TEX_COORD_BUMP_DY,
+  NODE_CLOSURE_SET_NORMAL,
+  NODE_ENTER_BUMP_EVAL,
+  NODE_LEAVE_BUMP_EVAL,
+  NODE_HSV,
+  NODE_CLOSURE_HOLDOUT,
+  NODE_FRESNEL,
+  NODE_LAYER_WEIGHT,
+  NODE_CLOSURE_VOLUME,
+  NODE_PRINCIPLED_VOLUME,
+  NODE_MATH,
+  NODE_VECTOR_MATH,
+  NODE_RGB_RAMP,
+  NODE_GAMMA,
+  NODE_BRIGHTCONTRAST,
+  NODE_LIGHT_PATH,
+  NODE_OBJECT_INFO,
+  NODE_PARTICLE_INFO,
+  NODE_HAIR_INFO,
+  NODE_TEXTURE_MAPPING,
+  NODE_MAPPING,
+  NODE_MIN_MAX,
+  NODE_CAMERA,
+  NODE_TEX_ENVIRONMENT,
+  NODE_TEX_SKY,
+  NODE_TEX_GRADIENT,
+  NODE_TEX_VORONOI,
+  NODE_TEX_MUSGRAVE,
+  NODE_TEX_WAVE,
+  NODE_TEX_MAGIC,
+  NODE_TEX_CHECKER,
+  NODE_TEX_BRICK,
+  NODE_TEX_WHITE_NOISE,
+  NODE_NORMAL,
+  NODE_LIGHT_FALLOFF,
+  NODE_IES,
+  NODE_RGB_CURVES,
+  NODE_VECTOR_CURVES,
+  NODE_TANGENT,
+  NODE_NORMAL_MAP,
+  NODE_INVERT,
+  NODE_MIX,
+  NODE_SEPARATE_VECTOR,
+  NODE_COMBINE_VECTOR,
+  NODE_SEPARATE_HSV,
+  NODE_COMBINE_HSV,
+  NODE_VECTOR_ROTATE,
+  NODE_VECTOR_TRANSFORM,
+  NODE_WIREFRAME,
+  NODE_WAVELENGTH,
+  NODE_BLACKBODY,
+  NODE_MAP_RANGE,
+  NODE_CLAMP,
+  NODE_BEVEL,
+  NODE_AMBIENT_OCCLUSION,
+  NODE_TEX_VOXEL,
+  NODE_AOV_START,
+  NODE_AOV_COLOR,
+  NODE_AOV_VALUE,
+  NODE_FLOAT_CURVE,
+  /* NOTE: for best OpenCL performance, item definition in the enum must
+   * match the switch case order in svm.h. */
+} ShaderNodeType;
+
+typedef enum NodeAttributeOutputType {
+  NODE_ATTR_OUTPUT_FLOAT3 = 0,
+  NODE_ATTR_OUTPUT_FLOAT,
+  NODE_ATTR_OUTPUT_FLOAT_ALPHA,
+} NodeAttributeOutputType;
+
+typedef enum NodeAttributeType {
+  NODE_ATTR_FLOAT = 0,
+  NODE_ATTR_FLOAT2,
+  NODE_ATTR_FLOAT3,
+  NODE_ATTR_FLOAT4,
+  NODE_ATTR_RGBA,
+  NODE_ATTR_MATRIX
+} NodeAttributeType;
+
+typedef enum NodeGeometry {
+  NODE_GEOM_P = 0,
+  NODE_GEOM_N,
+  NODE_GEOM_T,
+  NODE_GEOM_I,
+  NODE_GEOM_Ng,
+  NODE_GEOM_uv
+} NodeGeometry;
+
+typedef enum NodeObjectInfo {
+  NODE_INFO_OB_LOCATION,
+  NODE_INFO_OB_COLOR,
+  NODE_INFO_OB_INDEX,
+  NODE_INFO_MAT_INDEX,
+  NODE_INFO_OB_RANDOM
+} NodeObjectInfo;
+
+typedef enum NodeParticleInfo {
+  NODE_INFO_PAR_INDEX,
+  NODE_INFO_PAR_RANDOM,
+  NODE_INFO_PAR_AGE,
+  NODE_INFO_PAR_LIFETIME,
+  NODE_INFO_PAR_LOCATION,
+  NODE_INFO_PAR_ROTATION,
+  NODE_INFO_PAR_SIZE,
+  NODE_INFO_PAR_VELOCITY,
+  NODE_INFO_PAR_ANGULAR_VELOCITY
+} NodeParticleInfo;
+
+typedef enum NodeHairInfo {
+  NODE_INFO_CURVE_IS_STRAND,
+  NODE_INFO_CURVE_INTERCEPT,
+  NODE_INFO_CURVE_LENGTH,
+  NODE_INFO_CURVE_THICKNESS,
+  /* Fade for minimum hair width transiency. */
+  // NODE_INFO_CURVE_FADE,
+  NODE_INFO_CURVE_TANGENT_NORMAL,
+  NODE_INFO_CURVE_RANDOM,
+} NodeHairInfo;
+
+typedef enum NodeLightPath {
+  NODE_LP_camera = 0,
+  NODE_LP_shadow,
+  NODE_LP_diffuse,
+  NODE_LP_glossy,
+  NODE_LP_singular,
+  NODE_LP_reflection,
+  NODE_LP_transmission,
+  NODE_LP_volume_scatter,
+  NODE_LP_backfacing,
+  NODE_LP_ray_length,
+  NODE_LP_ray_depth,
+  NODE_LP_ray_diffuse,
+  NODE_LP_ray_glossy,
+  NODE_LP_ray_transparent,
+  NODE_LP_ray_transmission,
+} NodeLightPath;
+
+typedef enum NodeLightFalloff {
+  NODE_LIGHT_FALLOFF_QUADRATIC,
+  NODE_LIGHT_FALLOFF_LINEAR,
+  NODE_LIGHT_FALLOFF_CONSTANT
+} NodeLightFalloff;
+
+typedef enum NodeTexCoord {
+  NODE_TEXCO_NORMAL,
+  NODE_TEXCO_OBJECT,
+  NODE_TEXCO_CAMERA,
+  NODE_TEXCO_WINDOW,
+  NODE_TEXCO_REFLECTION,
+  NODE_TEXCO_DUPLI_GENERATED,
+  NODE_TEXCO_DUPLI_UV,
+  NODE_TEXCO_VOLUME_GENERATED
+} NodeTexCoord;
+
+typedef enum NodeMix {
+  NODE_MIX_BLEND = 0,
+  NODE_MIX_ADD,
+  NODE_MIX_MUL,
+  NODE_MIX_SUB,
+  NODE_MIX_SCREEN,
+  NODE_MIX_DIV,
+  NODE_MIX_DIFF,
+  NODE_MIX_DARK,
+  NODE_MIX_LIGHT,
+  NODE_MIX_OVERLAY,
+  NODE_MIX_DODGE,
+  NODE_MIX_BURN,
+  NODE_MIX_HUE,
+  NODE_MIX_SAT,
+  NODE_MIX_VAL,
+  NODE_MIX_COLOR,
+  NODE_MIX_SOFT,
+  NODE_MIX_LINEAR,
+  NODE_MIX_CLAMP /* used for the clamp UI option */
+} NodeMix;
+
+typedef enum NodeMathType {
+  NODE_MATH_ADD,
+  NODE_MATH_SUBTRACT,
+  NODE_MATH_MULTIPLY,
+  NODE_MATH_DIVIDE,
+  NODE_MATH_SINE,
+  NODE_MATH_COSINE,
+  NODE_MATH_TANGENT,
+  NODE_MATH_ARCSINE,
+  NODE_MATH_ARCCOSINE,
+  NODE_MATH_ARCTANGENT,
+  NODE_MATH_POWER,
+  NODE_MATH_LOGARITHM,
+  NODE_MATH_MINIMUM,
+  NODE_MATH_MAXIMUM,
+  NODE_MATH_ROUND,
+  NODE_MATH_LESS_THAN,
+  NODE_MATH_GREATER_THAN,
+  NODE_MATH_MODULO,
+  NODE_MATH_ABSOLUTE,
+  NODE_MATH_ARCTAN2,
+  NODE_MATH_FLOOR,
+  NODE_MATH_CEIL,
+  NODE_MATH_FRACTION,
+  NODE_MATH_SQRT,
+  NODE_MATH_INV_SQRT,
+  NODE_MATH_SIGN,
+  NODE_MATH_EXPONENT,
+  NODE_MATH_RADIANS,
+  NODE_MATH_DEGREES,
+  NODE_MATH_SINH,
+  NODE_MATH_COSH,
+  NODE_MATH_TANH,
+  NODE_MATH_TRUNC,
+  NODE_MATH_SNAP,
+  NODE_MATH_WRAP,
+  NODE_MATH_COMPARE,
+  NODE_MATH_MULTIPLY_ADD,
+  NODE_MATH_PINGPONG,
+  NODE_MATH_SMOOTH_MIN,
+  NODE_MATH_SMOOTH_MAX,
+} NodeMathType;
+
+typedef enum NodeVectorMathType {
+  NODE_VECTOR_MATH_ADD,
+  NODE_VECTOR_MATH_SUBTRACT,
+  NODE_VECTOR_MATH_MULTIPLY,
+  NODE_VECTOR_MATH_DIVIDE,
+
+  NODE_VECTOR_MATH_CROSS_PRODUCT,
+  NODE_VECTOR_MATH_PROJECT,
+  NODE_VECTOR_MATH_REFLECT,
+  NODE_VECTOR_MATH_DOT_PRODUCT,
+
+  NODE_VECTOR_MATH_DISTANCE,
+  NODE_VECTOR_MATH_LENGTH,
+  NODE_VECTOR_MATH_SCALE,
+  NODE_VECTOR_MATH_NORMALIZE,
+
+  NODE_VECTOR_MATH_SNAP,
+  NODE_VECTOR_MATH_FLOOR,
+  NODE_VECTOR_MATH_CEIL,
+  NODE_VECTOR_MATH_MODULO,
+  NODE_VECTOR_MATH_FRACTION,
+  NODE_VECTOR_MATH_ABSOLUTE,
+  NODE_VECTOR_MATH_MINIMUM,
+  NODE_VECTOR_MATH_MAXIMUM,
+  NODE_VECTOR_MATH_WRAP,
+  NODE_VECTOR_MATH_SINE,
+  NODE_VECTOR_MATH_COSINE,
+  NODE_VECTOR_MATH_TANGENT,
+  NODE_VECTOR_MATH_REFRACT,
+  NODE_VECTOR_MATH_FACEFORWARD,
+  NODE_VECTOR_MATH_MULTIPLY_ADD,
+} NodeVectorMathType;
+
+typedef enum NodeClampType {
+  NODE_CLAMP_MINMAX,
+  NODE_CLAMP_RANGE,
+} NodeClampType;
+
+typedef enum NodeMapRangeType {
+  NODE_MAP_RANGE_LINEAR,
+  NODE_MAP_RANGE_STEPPED,
+  NODE_MAP_RANGE_SMOOTHSTEP,
+  NODE_MAP_RANGE_SMOOTHERSTEP,
+} NodeMapRangeType;
+
+typedef enum NodeMappingType {
+  NODE_MAPPING_TYPE_POINT,
+  NODE_MAPPING_TYPE_TEXTURE,
+  NODE_MAPPING_TYPE_VECTOR,
+  NODE_MAPPING_TYPE_NORMAL
+} NodeMappingType;
+
+typedef enum NodeVectorRotateType {
+  NODE_VECTOR_ROTATE_TYPE_AXIS,
+  NODE_VECTOR_ROTATE_TYPE_AXIS_X,
+  NODE_VECTOR_ROTATE_TYPE_AXIS_Y,
+  NODE_VECTOR_ROTATE_TYPE_AXIS_Z,
+  NODE_VECTOR_ROTATE_TYPE_EULER_XYZ,
+} NodeVectorRotateType;
+
+typedef enum NodeVectorTransformType {
+  NODE_VECTOR_TRANSFORM_TYPE_VECTOR,
+  NODE_VECTOR_TRANSFORM_TYPE_POINT,
+  NODE_VECTOR_TRANSFORM_TYPE_NORMAL
+} NodeVectorTransformType;
+
+typedef enum NodeVectorTransformConvertSpace {
+  NODE_VECTOR_TRANSFORM_CONVERT_SPACE_WORLD,
+  NODE_VECTOR_TRANSFORM_CONVERT_SPACE_OBJECT,
+  NODE_VECTOR_TRANSFORM_CONVERT_SPACE_CAMERA
+} NodeVectorTransformConvertSpace;
+
+typedef enum NodeConvert {
+  NODE_CONVERT_FV,
+  NODE_CONVERT_FI,
+  NODE_CONVERT_CF,
+  NODE_CONVERT_CI,
+  NODE_CONVERT_VF,
+  NODE_CONVERT_VI,
+  NODE_CONVERT_IF,
+  NODE_CONVERT_IV
+} NodeConvert;
+
+typedef enum NodeMusgraveType {
+  NODE_MUSGRAVE_MULTIFRACTAL,
+  NODE_MUSGRAVE_FBM,
+  NODE_MUSGRAVE_HYBRID_MULTIFRACTAL,
+  NODE_MUSGRAVE_RIDGED_MULTIFRACTAL,
+  NODE_MUSGRAVE_HETERO_TERRAIN
+} NodeMusgraveType;
+
+typedef enum NodeWaveType { NODE_WAVE_BANDS, NODE_WAVE_RINGS } NodeWaveType;
+
+typedef enum NodeWaveBandsDirection {
+  NODE_WAVE_BANDS_DIRECTION_X,
+  NODE_WAVE_BANDS_DIRECTION_Y,
+  NODE_WAVE_BANDS_DIRECTION_Z,
+  NODE_WAVE_BANDS_DIRECTION_DIAGONAL
+} NodeWaveBandsDirection;
+
+typedef enum NodeWaveRingsDirection {
+  NODE_WAVE_RINGS_DIRECTION_X,
+  NODE_WAVE_RINGS_DIRECTION_Y,
+  NODE_WAVE_RINGS_DIRECTION_Z,
+  NODE_WAVE_RINGS_DIRECTION_SPHERICAL
+} NodeWaveRingsDirection;
+
+typedef enum NodeWaveProfile {
+  NODE_WAVE_PROFILE_SIN,
+  NODE_WAVE_PROFILE_SAW,
+  NODE_WAVE_PROFILE_TRI,
+} NodeWaveProfile;
+
+typedef enum NodeSkyType { NODE_SKY_PREETHAM, NODE_SKY_HOSEK, NODE_SKY_NISHITA } NodeSkyType;
+
+typedef enum NodeGradientType {
+  NODE_BLEND_LINEAR,
+  NODE_BLEND_QUADRATIC,
+  NODE_BLEND_EASING,
+  NODE_BLEND_DIAGONAL,
+  NODE_BLEND_RADIAL,
+  NODE_BLEND_QUADRATIC_SPHERE,
+  NODE_BLEND_SPHERICAL
+} NodeGradientType;
+
+typedef enum NodeVoronoiDistanceMetric {
+  NODE_VORONOI_EUCLIDEAN,
+  NODE_VORONOI_MANHATTAN,
+  NODE_VORONOI_CHEBYCHEV,
+  NODE_VORONOI_MINKOWSKI,
+} NodeVoronoiDistanceMetric;
+
+typedef enum NodeVoronoiFeature {
+  NODE_VORONOI_F1,
+  NODE_VORONOI_F2,
+  NODE_VORONOI_SMOOTH_F1,
+  NODE_VORONOI_DISTANCE_TO_EDGE,
+  NODE_VORONOI_N_SPHERE_RADIUS,
+} NodeVoronoiFeature;
+
+typedef enum NodeBlendWeightType {
+  NODE_LAYER_WEIGHT_FRESNEL,
+  NODE_LAYER_WEIGHT_FACING
+} NodeBlendWeightType;
+
+typedef enum NodeTangentDirectionType {
+  NODE_TANGENT_RADIAL,
+  NODE_TANGENT_UVMAP
+} NodeTangentDirectionType;
+
+typedef enum NodeTangentAxis {
+  NODE_TANGENT_AXIS_X,
+  NODE_TANGENT_AXIS_Y,
+  NODE_TANGENT_AXIS_Z
+} NodeTangentAxis;
+
+typedef enum NodeNormalMapSpace {
+  NODE_NORMAL_MAP_TANGENT,
+  NODE_NORMAL_MAP_OBJECT,
+  NODE_NORMAL_MAP_WORLD,
+  NODE_NORMAL_MAP_BLENDER_OBJECT,
+  NODE_NORMAL_MAP_BLENDER_WORLD,
+} NodeNormalMapSpace;
+
+typedef enum NodeImageProjection {
+  NODE_IMAGE_PROJ_FLAT = 0,
+  NODE_IMAGE_PROJ_BOX = 1,
+  NODE_IMAGE_PROJ_SPHERE = 2,
+  NODE_IMAGE_PROJ_TUBE = 3,
+} NodeImageProjection;
+
+typedef enum NodeImageFlags {
+  NODE_IMAGE_COMPRESS_AS_SRGB = 1,
+  NODE_IMAGE_ALPHA_UNASSOCIATE = 2,
+} NodeImageFlags;
+
+typedef enum NodeEnvironmentProjection {
+  NODE_ENVIRONMENT_EQUIRECTANGULAR = 0,
+  NODE_ENVIRONMENT_MIRROR_BALL = 1,
+} NodeEnvironmentProjection;
+
+typedef enum NodeBumpOffset {
+  NODE_BUMP_OFFSET_CENTER,
+  NODE_BUMP_OFFSET_DX,
+  NODE_BUMP_OFFSET_DY,
+} NodeBumpOffset;
+
+typedef enum NodeTexVoxelSpace {
+  NODE_TEX_VOXEL_SPACE_OBJECT = 0,
+  NODE_TEX_VOXEL_SPACE_WORLD = 1,
+} NodeTexVoxelSpace;
+
+typedef enum NodeAO {
+  NODE_AO_ONLY_LOCAL = (1 << 0),
+  NODE_AO_INSIDE = (1 << 1),
+  NODE_AO_GLOBAL_RADIUS = (1 << 2),
+} NodeAO;
+
+typedef enum ShaderType {
+  SHADER_TYPE_SURFACE,
+  SHADER_TYPE_VOLUME,
+  SHADER_TYPE_DISPLACEMENT,
+  SHADER_TYPE_BUMP,
+} ShaderType;
+
+typedef enum NodePrincipledHairParametrization {
+  NODE_PRINCIPLED_HAIR_REFLECTANCE = 0,
+  NODE_PRINCIPLED_HAIR_PIGMENT_CONCENTRATION = 1,
+  NODE_PRINCIPLED_HAIR_DIRECT_ABSORPTION = 2,
+  NODE_PRINCIPLED_HAIR_NUM,
+} NodePrincipledHairParametrization;
+
+/* Closure */
+
+typedef enum ClosureType {
+  /* Special type, flags generic node as a non-BSDF. */
+  CLOSURE_NONE_ID,
+
+  CLOSURE_BSDF_ID,
+
+  /* Diffuse */
+  CLOSURE_BSDF_DIFFUSE_ID,
+  CLOSURE_BSDF_OREN_NAYAR_ID,
+  CLOSURE_BSDF_DIFFUSE_RAMP_ID,
+  CLOSURE_BSDF_PRINCIPLED_DIFFUSE_ID,
+  CLOSURE_BSDF_PRINCIPLED_SHEEN_ID,
+  CLOSURE_BSDF_DIFFUSE_TOON_ID,
+  CLOSURE_BSDF_TRANSLUCENT_ID,
+
+  /* Glossy */
+  CLOSURE_BSDF_REFLECTION_ID,
+  CLOSURE_BSDF_MICROFACET_GGX_ID,
+  CLOSURE_BSDF_MICROFACET_GGX_FRESNEL_ID,
+  CLOSURE_BSDF_MICROFACET_GGX_CLEARCOAT_ID,
+  CLOSURE_BSDF_MICROFACET_BECKMANN_ID,
+  CLOSURE_BSDF_MICROFACET_MULTI_GGX_ID,
+  CLOSURE_BSDF_MICROFACET_MULTI_GGX_FRESNEL_ID,
+  CLOSURE_BSDF_ASHIKHMIN_SHIRLEY_ID,
+  CLOSURE_BSDF_ASHIKHMIN_VELVET_ID,
+  CLOSURE_BSDF_PHONG_RAMP_ID,
+  CLOSURE_BSDF_GLOSSY_TOON_ID,
+  CLOSURE_BSDF_HAIR_REFLECTION_ID,
+
+  /* Transmission */
+  CLOSURE_BSDF_REFRACTION_ID,
+  CLOSURE_BSDF_MICROFACET_BECKMANN_REFRACTION_ID,
+  CLOSURE_BSDF_MICROFACET_GGX_REFRACTION_ID,
+  CLOSURE_BSDF_MICROFACET_MULTI_GGX_GLASS_ID,
+  CLOSURE_BSDF_MICROFACET_BECKMANN_GLASS_ID,
+  CLOSURE_BSDF_MICROFACET_GGX_GLASS_ID,
+  CLOSURE_BSDF_MICROFACET_MULTI_GGX_GLASS_FRESNEL_ID,
+  CLOSURE_BSDF_SHARP_GLASS_ID,
+  CLOSURE_BSDF_HAIR_PRINCIPLED_ID,
+  CLOSURE_BSDF_HAIR_TRANSMISSION_ID,
+
+  /* Special cases */
+  CLOSURE_BSDF_TRANSPARENT_ID,
+
+  /* BSSRDF */
+  CLOSURE_BSSRDF_BURLEY_ID,
+  CLOSURE_BSSRDF_RANDOM_WALK_ID,
+  CLOSURE_BSSRDF_RANDOM_WALK_FIXED_RADIUS_ID,
+
+  /* Other */
+  CLOSURE_HOLDOUT_ID,
+
+  /* Volume */
+  CLOSURE_VOLUME_ID,
+  CLOSURE_VOLUME_ABSORPTION_ID,
+  CLOSURE_VOLUME_HENYEY_GREENSTEIN_ID,
+
+  CLOSURE_BSDF_PRINCIPLED_ID,
+
+  NBUILTIN_CLOSURES
+} ClosureType;
+
+/* watch this, being lazy with memory usage */
+#define CLOSURE_IS_BSDF(type) (type <= CLOSURE_BSDF_TRANSPARENT_ID)
+#define CLOSURE_IS_BSDF_DIFFUSE(type) \
+  (type >= CLOSURE_BSDF_DIFFUSE_ID && type <= CLOSURE_BSDF_TRANSLUCENT_ID)
+#define CLOSURE_IS_BSDF_GLOSSY(type) \
+  ((type >= CLOSURE_BSDF_REFLECTION_ID && type <= CLOSURE_BSDF_HAIR_REFLECTION_ID) || \
+   (type == CLOSURE_BSDF_HAIR_PRINCIPLED_ID))
+#define CLOSURE_IS_BSDF_TRANSMISSION(type) \
+  (type >= CLOSURE_BSDF_REFRACTION_ID && type <= CLOSURE_BSDF_HAIR_TRANSMISSION_ID)
+#define CLOSURE_IS_BSDF_SINGULAR(type) \
+  (type == CLOSURE_BSDF_REFLECTION_ID || type == CLOSURE_BSDF_REFRACTION_ID || \
+   type == CLOSURE_BSDF_TRANSPARENT_ID)
+#define CLOSURE_IS_BSDF_TRANSPARENT(type) (type == CLOSURE_BSDF_TRANSPARENT_ID)
+#define CLOSURE_IS_BSDF_MULTISCATTER(type) \
+  (type == CLOSURE_BSDF_MICROFACET_MULTI_GGX_ID || \
+   type == CLOSURE_BSDF_MICROFACET_MULTI_GGX_GLASS_ID)
+#define CLOSURE_IS_BSDF_MICROFACET(type) \
+  ((type >= CLOSURE_BSDF_MICROFACET_GGX_ID && type <= CLOSURE_BSDF_ASHIKHMIN_SHIRLEY_ID) || \
+   (type >= CLOSURE_BSDF_MICROFACET_BECKMANN_REFRACTION_ID && \
+    type <= CLOSURE_BSDF_MICROFACET_MULTI_GGX_GLASS_ID) || \
+   (type == CLOSURE_BSDF_MICROFACET_MULTI_GGX_GLASS_FRESNEL_ID))
+#define CLOSURE_IS_BSDF_MICROFACET_FRESNEL(type) \
+  (type == CLOSURE_BSDF_MICROFACET_MULTI_GGX_FRESNEL_ID || \
+   type == CLOSURE_BSDF_MICROFACET_MULTI_GGX_GLASS_FRESNEL_ID || \
+   type == CLOSURE_BSDF_MICROFACET_GGX_FRESNEL_ID || \
+   type == CLOSURE_BSDF_MICROFACET_GGX_CLEARCOAT_ID)
+#define CLOSURE_IS_BSDF_OR_BSSRDF(type) (type <= CLOSURE_BSSRDF_RANDOM_WALK_FIXED_RADIUS_ID)
+#define CLOSURE_IS_BSSRDF(type) \
+  (type >= CLOSURE_BSSRDF_BURLEY_ID && type <= CLOSURE_BSSRDF_RANDOM_WALK_FIXED_RADIUS_ID)
+#define CLOSURE_IS_VOLUME(type) \
+  (type >= CLOSURE_VOLUME_ID && type <= CLOSURE_VOLUME_HENYEY_GREENSTEIN_ID)
+#define CLOSURE_IS_VOLUME_SCATTER(type) (type == CLOSURE_VOLUME_HENYEY_GREENSTEIN_ID)
+#define CLOSURE_IS_VOLUME_ABSORPTION(type) (type == CLOSURE_VOLUME_ABSORPTION_ID)
+#define CLOSURE_IS_HOLDOUT(type) (type == CLOSURE_HOLDOUT_ID)
+#define CLOSURE_IS_PHASE(type) (type == CLOSURE_VOLUME_HENYEY_GREENSTEIN_ID)
+#define CLOSURE_IS_GLASS(type) \
+  (type >= CLOSURE_BSDF_MICROFACET_MULTI_GGX_GLASS_ID && type <= CLOSURE_BSDF_SHARP_GLASS_ID)
+#define CLOSURE_IS_PRINCIPLED(type) (type == CLOSURE_BSDF_PRINCIPLED_ID)
+
+#define CLOSURE_WEIGHT_CUTOFF 1e-5f
+
+CCL_NAMESPACE_END