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Nick Fisher
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ios/include/filament/MaterialEnums.h
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226
ios/include/filament/MaterialEnums.h
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/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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//! \file
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#ifndef TNT_FILAMENT_MATERIAL_ENUM_H
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#define TNT_FILAMENT_MATERIAL_ENUM_H
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#include <utils/bitset.h>
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#include <stddef.h>
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#include <stdint.h>
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namespace filament {
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// update this when a new version of filament wouldn't work with older materials
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static constexpr size_t MATERIAL_VERSION = 12;
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/**
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* Supported shading models
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*/
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enum class Shading : uint8_t {
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UNLIT, //!< no lighting applied, emissive possible
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LIT, //!< default, standard lighting
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SUBSURFACE, //!< subsurface lighting model
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CLOTH, //!< cloth lighting model
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SPECULAR_GLOSSINESS, //!< legacy lighting model
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};
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/**
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* Attribute interpolation types in the fragment shader
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*/
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enum class Interpolation : uint8_t {
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SMOOTH, //!< default, smooth interpolation
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FLAT //!< flat interpolation
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};
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/**
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* Shader quality, affect some global quality parameters
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*/
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enum class ShaderQuality : int8_t {
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DEFAULT = -1, // LOW on mobile, HIGH on desktop
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LOW = 0, // enable optimizations that can slightly affect correctness
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NORMAL = 1, // normal quality, correctness honored
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HIGH = 2 // higher quality (e.g. better upscaling, etc...)
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};
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/**
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* Supported blending modes
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*/
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enum class BlendingMode : uint8_t {
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//! material is opaque
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OPAQUE,
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//! material is transparent and color is alpha-pre-multiplied, affects diffuse lighting only
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TRANSPARENT,
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//! material is additive (e.g.: hologram)
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ADD,
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//! material is masked (i.e. alpha tested)
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MASKED,
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/**
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* material is transparent and color is alpha-pre-multiplied, affects specular lighting
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* when adding more entries, change the size of FRenderer::CommandKey::blending
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*/
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FADE,
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//! material darkens what's behind it
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MULTIPLY,
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//! material brightens what's behind it
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SCREEN,
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};
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/**
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* How transparent objects are handled
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*/
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enum class TransparencyMode : uint8_t {
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//! the transparent object is drawn honoring the raster state
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DEFAULT,
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/**
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* the transparent object is first drawn in the depth buffer,
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* then in the color buffer, honoring the culling mode, but ignoring the depth test function
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*/
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TWO_PASSES_ONE_SIDE,
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/**
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* the transparent object is drawn twice in the color buffer,
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* first with back faces only, then with front faces; the culling
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* mode is ignored. Can be combined with two-sided lighting
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*/
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TWO_PASSES_TWO_SIDES
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};
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/**
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* Supported types of vertex domains.
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*/
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enum class VertexDomain : uint8_t {
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OBJECT, //!< vertices are in object space, default
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WORLD, //!< vertices are in world space
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VIEW, //!< vertices are in view space
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DEVICE //!< vertices are in normalized device space
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// when adding more entries, make sure to update VERTEX_DOMAIN_COUNT
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};
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/**
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* Vertex attribute types
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*/
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enum VertexAttribute : uint8_t {
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// Update hasIntegerTarget() in VertexBuffer when adding an attribute that will
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// be read as integers in the shaders
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POSITION = 0, //!< XYZ position (float3)
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TANGENTS = 1, //!< tangent, bitangent and normal, encoded as a quaternion (float4)
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COLOR = 2, //!< vertex color (float4)
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UV0 = 3, //!< texture coordinates (float2)
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UV1 = 4, //!< texture coordinates (float2)
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BONE_INDICES = 5, //!< indices of 4 bones, as unsigned integers (uvec4)
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BONE_WEIGHTS = 6, //!< weights of the 4 bones (normalized float4)
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// -- we have 1 unused slot here --
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CUSTOM0 = 8,
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CUSTOM1 = 9,
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CUSTOM2 = 10,
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CUSTOM3 = 11,
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CUSTOM4 = 12,
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CUSTOM5 = 13,
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CUSTOM6 = 14,
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CUSTOM7 = 15,
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// Aliases for vertex morphing.
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MORPH_POSITION_0 = CUSTOM0,
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MORPH_POSITION_1 = CUSTOM1,
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MORPH_POSITION_2 = CUSTOM2,
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MORPH_POSITION_3 = CUSTOM3,
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MORPH_TANGENTS_0 = CUSTOM4,
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MORPH_TANGENTS_1 = CUSTOM5,
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MORPH_TANGENTS_2 = CUSTOM6,
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MORPH_TANGENTS_3 = CUSTOM7,
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// this is limited by driver::MAX_VERTEX_ATTRIBUTE_COUNT
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};
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static constexpr size_t MAX_MORPH_TARGETS = 4;
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static constexpr size_t MAX_CUSTOM_ATTRIBUTES = 8;
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/**
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* Material domains
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*/
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enum class MaterialDomain : uint8_t {
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SURFACE = 0, //!< shaders applied to renderables
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POST_PROCESS = 1, //!< shaders applied to rendered buffers
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};
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/**
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* Specular occlusion
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*/
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enum class SpecularAmbientOcclusion : uint8_t {
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NONE = 0, //!< no specular occlusion
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SIMPLE = 1, //!< simple specular occlusion
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BENT_NORMALS = 2, //!< more accurate specular occlusion, requires bent normals
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};
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/**
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* Refraction
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*/
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enum class RefractionMode : uint8_t {
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NONE = 0, //!< no refraction
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CUBEMAP = 1, //!< refracted rays go to the ibl cubemap
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SCREEN_SPACE = 2, //!< refracted rays go to screen space
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};
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/**
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* Refraction type
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*/
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enum class RefractionType : uint8_t {
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SOLID = 0, //!< refraction through solid objects (e.g. a sphere)
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THIN = 1, //!< refraction through thin objects (e.g. window)
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};
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// can't really use std::underlying_type<AttributeIndex>::type because the driver takes a uint32_t
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using AttributeBitset = utils::bitset32;
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static constexpr size_t MATERIAL_PROPERTIES_COUNT = 26;
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enum class Property : uint8_t {
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BASE_COLOR, //!< float4, all shading models
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ROUGHNESS, //!< float, lit shading models only
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METALLIC, //!< float, all shading models, except unlit and cloth
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REFLECTANCE, //!< float, all shading models, except unlit and cloth
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AMBIENT_OCCLUSION, //!< float, lit shading models only, except subsurface and cloth
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CLEAR_COAT, //!< float, lit shading models only, except subsurface and cloth
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CLEAR_COAT_ROUGHNESS, //!< float, lit shading models only, except subsurface and cloth
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CLEAR_COAT_NORMAL, //!< float, lit shading models only, except subsurface and cloth
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ANISOTROPY, //!< float, lit shading models only, except subsurface and cloth
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ANISOTROPY_DIRECTION, //!< float3, lit shading models only, except subsurface and cloth
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THICKNESS, //!< float, subsurface shading model only
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SUBSURFACE_POWER, //!< float, subsurface shading model only
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SUBSURFACE_COLOR, //!< float3, subsurface and cloth shading models only
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SHEEN_COLOR, //!< float3, lit shading models only, except subsurface
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SHEEN_ROUGHNESS, //!< float3, lit shading models only, except subsurface and cloth
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SPECULAR_COLOR, //!< float3, specular-glossiness shading model only
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GLOSSINESS, //!< float, specular-glossiness shading model only
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EMISSIVE, //!< float4, all shading models
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NORMAL, //!< float3, all shading models only, except unlit
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POST_LIGHTING_COLOR, //!< float4, all shading models
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CLIP_SPACE_TRANSFORM, //!< mat4, vertex shader only
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ABSORPTION, //!< float3, how much light is absorbed by the material
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TRANSMISSION, //!< float, how much light is refracted through the material
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IOR, //!< float, material's index of refraction
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MICRO_THICKNESS, //!< float, thickness of the thin layer
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BENT_NORMAL, //!< float3, all shading models only, except unlit
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// when adding new Properties, make sure to update MATERIAL_PROPERTIES_COUNT
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};
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} // namespace filament
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#endif
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