Shader 指令优化#

如果需要对Shader做复杂度优化，可以使用Shader LOD 来完成

如何快速定位 Shader 瓶颈#

Xcode抓帧，选择Group by Pipeline State，此时会将shader按开销从高到低排列 https://www.bilibili.com/video/BV1Ra411M7aE/?vd_source=87d6628a2e72b87e7260cc3fdba77a81

Block Feature	Type	Could be Half
”Space” Block Feature
unity_ObjectToWorld	float4x4	No
unity_WorldToObject	float4x4	No
unity_WorldTransformParams	float	No
LightMap Block Feature
unity_LightmapST	float4	No
unity_DynamicLightmapST	float4	No
Render Layer Block Feature
unity_RenderingLayer	float4	No
Spherical Harmonic Block Feature
unity_SHAr	float4	Yes
unity_SHAg	float4	Yes
unity_SHAb	float4	Yes
unity_SHBr	float4	Yes
unity_SHBg	float4	Yes
unity_SHBb	float4	Yes
unity_SHC	float4	Yes
Probe Volume Block Feature
unity_ProbeVolumeParams	float4	No
unity_ProbeVolumeWorldToObject	float4x4	No
unity_ProbeVolumeSizeInv	float4	No
unity_ProbeVolumeMin	float4	No
Probe Occlusion Block Feature
unity_ProbesOcclusion	float4	No
Motion Vector Block Feature
unity_MatrixPreviousM	float4x4	No
unity_MatrixPreviousMI	float4x4	No
unity_MotionVectorsParams	float4	No
Light Indices Block Feature (used in LWRP)
unity_LightData	float4	Yes
unity_LightIndices[2]	float4 (2 elements)	Yes
Reflection Probe 0 Block Feature
unity_SpecCube0_HDR	float4	Yes
Reflection Probe 1 Block Feature
unity_SpecCube1_HDR	float4	Yes