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A method that allows for fast GPU resizing in the Unity Engine.
unity-gpu-texture-resize's Introduction
Why This Script Was Created This class allows you to resize an image on the GPU.
Methods
Speeds
Source
ResizeTool.Resize(..)00:00:40.89 This Tool [FREE]
UnityEngine.Texture2D.Resize(..)01:08:08.55 Unity Method
ResizePro.Resize(..)00:00:40.28 ResizePro [PAID ASSET]
RenderTexture rt = RenderTexture.GetTemporary() create a temporary render texture with the target sizeRenderTexture.active set the active RenderTexture to the temporary texture so we can read from itGraphics.Blit() Copies source texture into destination render texture with a shader (on the gpu) more info texture2D.Resize() resize the texture to the target values (this sets the pixel data as undefined) more info texture2D.ReadPixels() reads the pixel values from the temporary RenderTexture onto the resized texture more info texture2D.Apply() actually upload the changed pixels to the graphics card more info
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unity-gpu-texture-resize's Issues
I don't really see why the rendertexture is used here, the data is blitted once from input Texture2d to the rendertexture it doesn't seem to be used anywhere later.
Seems you are only applying Graphics.Blit - how does this compare to ResizePro?
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