// UNITY_SHADER_NO_UPGRADE

#ifndef _VLB_SHADER_DEFINES_INCLUDED_
#define _VLB_SHADER_DEFINES_INCLUDED_

/// ****************************************
/// GLOBAL DEFINES
/// ****************************************
#if UNITY_VERSION < 201810 // SRP support introduced in Unity 2018.1.0
#undef VLB_SRP_API
#endif

#if UNITY_VERSION >= 560 // Instancing API introduced in Unity 5.6
#define VLB_INSTANCING_API_AVAILABLE 1

#if defined(INSTANCING_ON)
#define VLB_GPU_INSTANCING 1
#endif

#endif

#if UNITY_VERSION >= 550 // Single Pass Instanced rendering introduced in Unity 5.5
#define VLB_STEREO_INSTANCING 1
#endif

#if VLB_SRP_API && VLB_INSTANCING_API_AVAILABLE && VLB_GPU_INSTANCING
// When using SRP API and GPU Instancing, the unity_WorldToObject and unity_ObjectToWorld matrices are not sent, so we have to manually send them
#define VLB_CUSTOM_INSTANCED_OBJECT_MATRICES 1
#endif

#if VLB_COLOR_GRADIENT_MATRIX_HIGH || VLB_COLOR_GRADIENT_MATRIX_LOW
#define VLB_COLOR_GRADIENT 1
#else
#define VLB_COLOR_FLAT 1
#endif
/// ****************************************

/// ****************************************
/// DEBUG
/// ****************************************
#define DEBUG_VALUE_DEPTHBUFFER_FROMEYE 1
#define DEBUG_VALUE_DEPTHBUFFER_FROMNEARPLANE 2
#define DEBUG_VALUE_DEPTHBLEND 3
#define DEBUG_VALUE_DEPTHSTEREOEYE 4
#define DEBUG_VALUE_LINEAR_OVERFLOW 5
#define DEBUG_VALUE_SHADOW_DEPTH 6
//#define DEBUG_DEPTH_MODE DEBUG_VALUE_SHADOW_DEPTH
//#define DEBUG_SHOW_NOISE3D 1
//#define DEBUG_BLEND_INSIDE_OUTSIDE 1

#if DEBUG_DEPTH_MODE && !VLB_DEPTH_BLEND
#define VLB_DEPTH_BLEND 1
#endif

#if DEBUG_SHOW_NOISE3D && !VLB_NOISE_3D
#define VLB_NOISE_3D 1
#endif
/// ****************************************

/// ****************************************
/// OPTIM
/// ****************************************
/// compute most of the intensity in VS => huge perf improvements
#if !VLB_SHADER_ACCURACY_HIGH
#define OPTIM_VS 1
#endif

/// when OPTIM_VS is enabled, also compute fresnel in VS => better perf,
/// but require too much tessellation for the same quality
//#define OPTIM_VS_FRESNEL_VS 1
/// ****************************************

/// ****************************************
/// FIXES
/// ****************************************
#define FIX_DISABLE_DEPTH_BLEND_WITH_OBLIQUE_PROJ 1
/// ****************************************


#endif