unity沒有monodevelop，[UnityShader基礎]06.#pragma multi

unity沒有monodevelop，[UnityShader基礎]06.#pragma multi_compile

2023-12-06 阅读 18 评论 0

摘要：[UnityShader基礎]06.#pragma multi_compile 參考鏈接： https://blog.csdn.net/qq826364410/article/details/81774741 https://docs.unity3d.com/Manual/SL-MultipleProgramVariants.html ? 1.#pragma multi_compile MY_multi_1 MY_multi_2 定義了兩個shader關鍵字&#

[UnityShader基礎]06.#pragma multi_compile

參考鏈接：

https://blog.csdn.net/qq826364410/article/details/81774741

https://docs.unity3d.com/Manual/SL-MultipleProgramVariants.html

1.#pragma multi_compile MY_multi_1 MY_multi_2

定義了兩個shader關鍵字，一個是MY_multi_1，另一個是MY_multi_2

MultiCompile.shader

 1 Shader "Custom/MultiCompile"
 2 {
 3     SubShader
 4     {
 5         Pass
 6         {
 7             CGPROGRAM
 8             #pragma vertex vert
 9             #pragma fragment frag
10             #pragma multi_compile MY_multi_1 MY_multi_2
11             
12             #include "UnityCG.cginc"
13 
14             struct appdata
15             {
16                 float4 vertex : POSITION;
17             };
18 
19             struct v2f
20             {
21                 float4 vertex : SV_POSITION;
22             };
23 
24             v2f vert (appdata v)
25             {
26                 v2f o;
27                 o.vertex = mul(UNITY_MATRIX_MVP, v.vertex);
28                 return o;
29             }
30             
31             fixed4 frag (v2f i) : SV_Target
32             {
33                 fixed4 col = fixed4(1, 0, 0, 0);
34                 #ifdef MY_multi_1
35                 col = fixed4(0, 1, 0, 0);
36                 #endif
37                 #ifdef MY_multi_2
38                 col = fixed4(0, 0, 1, 0);
39                 #endif
40                 return col;
41             }
42             ENDCG
43         }
44     }
45 }

測試如下，來回按下QW，即可以看到兩種顏色的切換

 1 using UnityEngine;
 2 
 3 public class MultiCompile : MonoBehaviour {
 4 
 5     void Update ()
 6     {
 7         if (Input.GetKeyDown(KeyCode.Q))
 8         {
 9             Shader.EnableKeyword("MY_multi_1");
10             Shader.DisableKeyword("MY_multi_2");
11         }
12         else if(Input.GetKeyDown(KeyCode.W))
13         {
14             Shader.EnableKeyword("MY_multi_2");
15             Shader.DisableKeyword("MY_multi_1");
16         }
17     }
18 }

2.#pragma multi_compile __ MY_multi_3

定義了一個shader關鍵字，MY_multi_3

MultiCompile2.shader

 1 Shader "Custom/MultiCompile2"
 2 {
 3     SubShader
 4     {
 5         Pass
 6         {
 7             CGPROGRAM
 8             #pragma vertex vert
 9             #pragma fragment frag
10             #pragma multi_compile __ MY_multi_3
11             
12             #include "UnityCG.cginc"
13 
14             struct appdata
15             {
16                 float4 vertex : POSITION;
17             };
18 
19             struct v2f
20             {
21                 float4 vertex : SV_POSITION;
22             };
23 
24             v2f vert (appdata v)
25             {
26                 v2f o;
27                 o.vertex = mul(UNITY_MATRIX_MVP, v.vertex);
28                 return o;
29             }
30             
31             fixed4 frag (v2f i) : SV_Target
32             {
33                 fixed4 col = fixed4(1, 0, 0, 0);
34                 #ifdef MY_multi_3
35                 col = fixed4(1, 1, 1, 0);
36                 #endif
37                 return col;
38             }
39             ENDCG
40         }
41     }
42 }

測試如下，來回按下ER，即可以看到兩種顏色的切換

 1 using UnityEngine;
 2 
 3 public class MultiCompile2 : MonoBehaviour {
 4 
 5     void Update ()
 6     {
 7         if (Input.GetKeyDown(KeyCode.E))
 8         {
 9             Shader.EnableKeyword("MY_multi_3");
10         }
11         else if (Input.GetKeyDown(KeyCode.R))
12         {
13             Shader.DisableKeyword("MY_multi_3");
14         }
15     }
16 }

posted on 2019-04-13 17:13?艱苦奮斗中閱讀(...) 評論(...) 編輯收藏

轉載于:https://www.cnblogs.com/lyh916/p/10701939.html

原文链接：https://hbdhgg.com/2/190593.html