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近期才發現Unity3D還有一個訪問硬件設備信息的類SystemInfo。
概述：
UnityEngine.SystemInfo類中的屬性都是只讀屬性，存儲着運行平台的一些硬件信息，找出底層平台和硬件的功能，如：設備的名稱、設備的類型、顯卡的類型，顯卡的名稱、顯卡供應商（制造商）、系統內存大小、顯存大小、支持的渲染目標數量等等。我們也可以檢查支持哪些RenderTexture(渲染紋理)格式(SupportsRenderTextureFormat)，CPU有多少可用的線程的(processorCount)等等。
SystemInfo類中的靜態變量：
中文顯示：
Rendering.CopyTextureSupport copyTextureSupport：（只讀）支持多種復制紋理功能的情況。
string deviceModel：（只讀）設備的模型或模式。
string deviceName：（只讀）用戶定義的設備名稱。
DeviceType deviceType：（只讀）返回程序運行所在的設備類型（PC電腦、掌上型等）。
string deviceUniqueIdentifier：（只讀）設備的唯一標識符。每一台設備都有唯一的標識符。
int graphicsDeviceID：（只讀）顯卡的唯一標識符ID。
string graphicsDeviceName：（只讀）顯卡的名稱。
Rending.GraphicsDeviceType graphicsDeviceType：（只讀）顯卡的類型。
string graphicsDeviceVendor：（只讀）顯卡的供應商。
int graphicsDeviceVendorID：（只讀）顯卡供應商的唯一識別碼ID。
string graphicsDeviceVersion：（只讀）顯卡的類型和版本。
int graphicsMemorySize：（只讀）顯存大小。
bool graphicsMultiThreaded：（只讀）是否支持多線程渲染？
int graphicsShaderLevel：（只讀）顯卡着色器的級別。
int maxTextureSize：（只讀）支持的最大紋理大小。
NPOTSupport npotSupport：（只讀）GPU支持的NPOT紋理。
string operatingSystem：（只讀）操作系統的版本名稱。
int processorCount：（只讀）當前處理器的數量。
int processorFrequency：（只讀）處理器的頻率。
string processorType：（只讀）處理器的名稱。
int supportedRenderTargetCount：（只讀）支持渲染多少目標紋理。
bool supports2DArrayTextures：（只讀）是否支持2D數組紋理。
bool supports3DTextures：（只讀）是否支持3D（體積）紋理。
bool supportsAccelerometer：（只讀）是否支持獲取加速度計。
bool supportsAudio：（只讀）是否支持獲取用於回放的音頻設備。
bool supportsComputeShaders：（只讀）是否支持計算着色器。
bool supportsGyroscope：是否支持獲取陀螺儀。
bool supportsImageEffects：（只讀）是否支持圖形特效。
bool supportsInstancing：（只讀）是否支持實例化GPU的Draw Call。
bool supportsLocationService：是否支持定位功能。
bool supportsMotionVectors：是否支持運動向量。
bool supportsRawShadowDepthSampling：（只讀）是否支持陰影深度。
bool supportsRenderTextures：（只讀）是否支持渲染紋理。
bool supportsRenderToCubemap：（只讀）是否支持立方體紋理。
bool supportsShadows：（只讀）是否支持內置陰影。
bool supportsSparseTextures：（只讀）是否支持稀疏紋理。
bool supportsStencil：（只讀）是否支持模版緩存。
bool supportsVibration：是否支持用戶觸摸震動反饋。
int systemMemorySize：（只讀）系統內存大小。
string unsupportedIdentifier：不支持運行在當前設備的SystemInfo屬性值。
官方文檔英文顯示：
| copyTextureSupport | Support for various Graphics.CopyTexture cases (Read Only). |
| deviceModel | The model of the device (Read Only). |
| deviceName | The user defined name of the device (Read Only). |
| deviceType | Returns the kind of device the application is running on (Read Only). |
| deviceUniqueIdentifier | A unique device identifier. It is guaranteed to be unique for every device (Read Only). |
| graphicsDeviceID | The identifier code of the graphics device (Read Only). |
| graphicsDeviceName | The name of the graphics device (Read Only). |
| graphicsDeviceType | The graphics API type used by the graphics device (Read Only). |
| graphicsDeviceVendor | The vendor of the graphics device (Read Only). |
| graphicsDeviceVendorID | The identifier code of the graphics device vendor (Read Only). |
| graphicsDeviceVersion | The graphics API type and driver version used by the graphics device (Read Only). |
| graphicsMemorySize | Amount of video memory present (Read Only). |
| graphicsMultiThreaded | Is graphics device using multi-threaded rendering (Read Only)? |
| graphicsShaderLevel | Graphics device shader capability level (Read Only). |
| maxTextureSize | Maximum texture size (Read Only). |
| npotSupport | What NPOT (non-power of two size) texture support does the GPU provide? (Read Only) |
| operatingSystem | Operating system name with version (Read Only). |
| processorCount | Number of processors present (Read Only). |
| processorFrequency | Processor frequency in MHz (Read Only). |
| processorType | Processor name (Read Only). |
| supportedRenderTargetCount | How many simultaneous render targets (MRTs) are supported? (Read Only) |
| supports2DArrayTextures | Are 2D Array textures supported? (Read Only) |
| supports3DTextures | Are 3D (volume) textures supported? (Read Only) |
| supportsAccelerometer | Is an accelerometer available on the device? |
| supportsAudio | Is there an Audio device available for playback? |
| supportsComputeShaders | Are compute shaders supported? (Read Only) |
| supportsGyroscope | Is a gyroscope available on the device? |
| supportsImageEffects | Are image effects supported? (Read Only) |
| supportsInstancing | Is GPU draw call instancing supported? (Read Only) |
| supportsLocationService | Is the device capable of reporting its location? |
| supportsMotionVectors | Are motion vectors supported. |
| supportsRawShadowDepthSampling | Is sampling raw depth from shadowmaps supported? (Read Only) |
| supportsRenderTextures | Are render textures supported? (Read Only) |
| supportsRenderToCubemap | Are cubemap render textures supported? (Read Only) |
| supportsShadows | Are built-in shadows supported? (Read Only) |
| supportsSparseTextures | Are sparse textures supported? (Read Only) |
| supportsStencil | Is the stencil buffer supported? (Read Only) |
| supportsVibration | Is the device capable of providing the user haptic feedback by vibration? |
| systemMemorySize | Amount of system memory present (Read Only). |
| unsupportedIdentifier | Value returned by SystemInfo string properties which are not supported on the current platform. |
SystemInfo類中的函數：
bool SupportsRenderTextureFormat(
RenderTextureFormat format);
輸入一個渲染紋理的格式，判斷設備是否支持這種格式
bool SupportsTextureFormat(
TextureFormat format);
輸入一個紋理的格式，判斷設備是否支持這種格式。