13.1 获取深度和法线纹理

G-buffer

A screen space representation of geometry and material information, generated by an intermediate rendering pass in deferred shading rendering pipelines.

几何体和材质信息的屏幕空间表示，由延迟着色渲染管道中的中间渲染通道生成。

13.1.2 如何获取

13.1.3 查看深度和法线纹理

13.2 再谈运动模糊

用深度纹理重建世界坐标

Camera

depthTextureMode

previousViewProjectionMatrix

camera.projectionMatrix

// Set an off-center projection, where perspective's vanishing

// point is not necessarily in the center of the screen.

//

// left/right/top/bottom define near plane size, i.e.

// how offset are corners of camera's near plane.

// Tweak the values and you can see camera's frustum change.


using UnityEngine;

using System.Collections;


[ExecuteInEditMode]

public class ExampleClass : MonoBehaviour

{

    public float left = -0.2F;

    public float right = 0.2F;

    public float top = 0.2F;

    public float bottom = -0.2F;

    void LateUpdate()

    {

        Camera cam = Camera.main;

        Matrix4x4 m = PerspectiveOffCenter(left, right, bottom, top, cam.nearClipPlane, cam.farClipPlane);

        cam.projectionMatrix = m;

    }


    static Matrix4x4 PerspectiveOffCenter(float left, float right, float bottom, float top, float near, float far)

    {

        float x = 2.0F * near / (right - left);

        float y = 2.0F * near / (top - bottom);

        float a = (right + left) / (right - left);

        float b = (top + bottom) / (top - bottom);

        float c = -(far + near) / (far - near);

        float d = -(2.0F * far * near) / (far - near);

        float e = -1.0F;

        Matrix4x4 m = new Matrix4x4();

        m[0, 0] = x;

        m[0, 1] = 0;

        m[0, 2] = a;

        m[0, 3] = 0;

        m[1, 0] = 0;

        m[1, 1] = y;

        m[1, 2] = b;

        m[1, 3] = 0;

        m[2, 0] = 0;

        m[2, 1] = 0;

        m[2, 2] = c;

        m[2, 3] = d;

        m[3, 0] = 0;

        m[3, 1] = 0;

        m[3, 2] = e;

        m[3, 3] = 0;

        return m;

    }

}

ExecuteInEditMode

Shader

UNITY_UV_STARTS_AT_TOP

13.3 全局雾效

13.3.3 实现

GetComponent

Component.GetComponent

GameObject.GetComponent

OnEnable

SetRow

material.SetMatrix

// Use this shader on an object together with the above example script.

// The shader transforms texture coordinates with a matrix set from a script.

Shader "RotatingTexture"

{

    Properties

    {

        _MainTex ("Base (RGB)", 2D) = "white" {}

    }

    SubShader

    {

        Pass

        {

            CGPROGRAM

            #pragma vertex vert

            #pragma fragment frag


            struct v2f

            {

                float2 uv : TEXCOORD0;

                float4 pos : SV_POSITION;

            };


            float4x4 _TextureRotation;


            v2f vert (float4 pos : POSITION, float2 uv : TEXCOORD0)

            {

                v2f o;

                o.pos = UnityObjectToClipPos(pos);

                o.uv = mul(_TextureRotation, float4(uv,0,1)).xy;

                return o;

            }


            sampler2D _MainTex;

            fixed4 frag (v2f i) : SV_Target

            {

                return tex2D(_MainTex, i.uv);

            }

            ENDCG

        }

    }

}

Normalize