Procedural Materials

发表于 2017-07-04 | 更新于 2017-07-04 | 分类于 Graphics ， Graphics Overview ， Procedural Materials ， Procedural Materials

物理材质本质上和标准的材质是相同的
唯一的区别是可以使用运行时生成的纹理

Asynchronous Texture Upload

发表于 2017-07-03 | 更新于 2017-07-03 | 分类于 Graphics ， Graphics Overview ， Advanced Rendering Features ， Asynchronous Texture Upload

Asynchronous Texture Upload

Asynchronous Texture Upload enables asynchronous loading of Texture Data from disk and enables time-sliced upload to GPU on the Render-thread
对于没有开启读写的纹理，这个是自动开启的
目测不支持AB，所以并没卵用

Simple & Full Control Over Memory / Time-Slicing

在 QualitySettings 里面可以设置异步提交时间和 Buffer 大小

CullingGroup API

发表于 2017-07-03 | 更新于 2017-07-03 | 分类于 Graphics ， Graphics Overview ， Advanced Rendering Features ， CullingGroup API

CullingGroup API

CullingGroup offers a way to integrate your own systems into Unity’s culling and LOD pipeline.

CullingGroup API Best Practices

Using visibility

Using distance

Performance and design

Graphics hardware capabilities and emulation

发表于 2017-07-03 | 更新于 2017-07-03 | 分类于 Graphics ， Graphics Overview ， Advanced Rendering Features ， Graphics hardware capabilities and emulation

Graphics hardware capabilities and emulation

Edit > Graphics Emulation，可以模拟显卡，支持模拟哪些，还得看显卡的支持
列出了不同显卡支持功能

Shader Model 4 (Standalone & Windows Store platforms)

Shader Model 3 (Standalone platform)

Shader Model 2 (Standalone platform)

OpenGL ES 3.0 (Android platform)

Metal (iOS, tvOS platforms)

OpenGL ES 2.0 (Android, iOS, tvOS, Tizen platforms)

WebGL 1 and WebGL 2 (WebGL platform)

Shader Model 2 - DX11 FL9.3 (Windows Store Platform)

Sparse Textures

发表于 2017-07-03 | 更新于 2017-07-03 | 分类于 Graphics ， Graphics Overview ， Advanced Rendering Features ， Sparse Textures

Sparse Textures

支持的设备需求不太明确

GPU instancing

发表于 2017-07-03 | 更新于 2017-07-03 | 分类于 Graphics ， Graphics Overview ， Advanced Rendering Features ， GPU instancing

GPU instancing

Introduction

选多同一个 mesh 多次在同一时刻，牺牲一点 draw call
虽然是渲染同一个 mesh，但是可以有不同的参数

Adding instancing to your Materials

GPU Instancing is available on the following platforms and APIs:

DirectX 11 and DirectX 12 on Windows
OpenGL Core 4.1+/ES3.0+ on Windows, macOS, Linux, iOS and Android
Metal on macOS and iOS
Vulkan on Windows and Android
PlayStation 4 and Xbox One
WebGL (requires WebGL 2.0 API)

Advanced GPU instancing tips

Batching priority

优先顺序：静态合并 -》GPU Instancing -》动态合并

UnityObjectToClipPos

这玩意效率更高，比起自己写转换

Further notes

For Graphics.DrawMeshInstanced, you need to enable GPU Instancing on the Material that is being passed into this method. However, Graphics.DrawMeshInstancedIndirect does not require you to enable GPU Instancing. The indirect instancing keyword PROCEDURAL_INSTANCING_ON is not affected by stripping.
Instanced draw calls appear in the Frame Debugger as Draw Mesh (instanced).
When using forward rendering, Unity cannot efficiently instance objects that are affected by multiple lights. Only the base pass can make effective use of instancing, not the added passes. For more information about lighting passes, see documentation on Forward Rendering and Pass Tags
Objects that use lightmaps, or are affected by different light or Reflection Probes, can’t be instanced.
If you have more than two passes for multi-pass Shaders, only the first passes can be instanced. This is because Unity forces the later passes to be rendered together for each object, forcing Material changes.

Compute shaders

发表于 2017-07-01 | 更新于 2017-07-03 | 分类于 Graphics ， Graphics Overview ， Advanced Rendering Features ， Compute shaders

Compute shaders

compute shaders 跑在显卡上，在正常的渲染管线之外
主要用于大量的并行运算
Windows and Windows Store, with a DirectX 11 or DirectX 12 graphics API and Shader Model 5.0 GPU
macOS and iOS using Metal graphics API
Android, Linux and Windows platforms with Vulkan API
Modern OpenGL platforms (OpenGL 4.3 on Linux or Windows; OpenGL ES 3.1 on Android). Note that Mac - OS X does not support OpenGL 4.3
Modern consoles (Sony PS4 and Microsoft Xbox One)

Rendering Paths

发表于 2017-07-01 | 更新于 2017-07-01 | 分类于 Graphics ， Graphics Overview ， Advanced Rendering Features ， Rendering Paths

Rendering Paths

Rendering Paths Comparison

Deferred Forward Legacy Deferred Vertex Lit
Features
Per-pixel lighting (normal maps, light cookies) Yes Yes Yes -
Realtime shadows Yes With caveats Yes -
Reflection Probes Yes Yes - -
Depth&Normals Buffers Yes Additional render passes Yes -
Soft Particles Yes - Yes -
Semitransparent objects - Yes - Yes
Anti-Aliasing - Yes - Yes
Light Culling Masks Limited Yes Limited Yes
Lighting Fidelity All per-pixel Some per-pixel All per-pixel All per-vertex
Performance
Cost of a per-pixel Light Number of pixels it illuminates Number of pixels * Number of objects it illuminates Number of pixels it illuminates -
Number of times objects are normally rendered 1 Number of per-pixel lights 2 1
Overhead for simple scenes High None Medium None
Platform Support
PC (Windows/Mac) Shader Model 3.0+ & MRT All Shader Model 3.0+ All
Mobile (iOS/Android) OpenGL ES 3.0 & MRT All OpenGL ES 2.0 All
Consoles XB1, PS4 All XB1, PS4, 360 -