初次提交

2022-09-19 18:05:01 +08:00
commit 57051fc44b
5401 changed files with 325410 additions and 0 deletions
--- a/第22章夜鹰行动/AircraftAttack/assets/frag_tex_landform.sh
+++ b/第22章夜鹰行动/AircraftAttack/assets/frag_tex_landform.sh
@@ -0,0 +1,85 @@
+precision mediump float;
+varying vec2 vTextureCoord; //接收纹理坐标参数
+varying float vertexHeight;//接受顶点的高度值
+uniform sampler2D usTextureTuCeng;//纹理内容数据   ----土层
+uniform sampler2D usTextureCaoDi;//纹理内容数据-----草地
+uniform sampler2D usTextureShiTou;//纹理内容数据-----石头
+uniform sampler2D usTextureShanDing;//纹理内容数据-----山顶
+uniform float uheight;//最低点高度
+uniform float uheight_span;
+uniform int uland_flag;//山的标志1为地面上的高山
+void main()                         
+{           
+   //第一块地图的高度
+ 	float height1=30.0;//第一个的渐变高度
+ 	float height2=30.0;
+ 	float height3=10.0;
+ 	
+ 	float land1=250.0;//陆地山的过度
+	float land2=400.0;
+
+ 	vec4 finalColor0=vec4(0.3,0.3,0.3,0.5);//黑色条
+   vec4 finalColor1=texture2D(usTextureTuCeng, vTextureCoord);//土层
+   vec4 finalColor2=texture2D(usTextureCaoDi, vTextureCoord);   //草地
+   vec4 finalColor3=texture2D(usTextureShiTou, vTextureCoord);//石头
+   vec4 finalColor4=texture2D(usTextureShanDing, vTextureCoord);//山顶纹理
+   if(uland_flag==0)
+   {
+	   if(abs(vertexHeight)<uheight)
+	   {
+	      float ratio=abs(vertexHeight)/uheight;
+	      finalColor3 *=(1.0-ratio); 
+	   	  finalColor0 *=ratio;
+	      gl_FragColor =finalColor3+ finalColor0;
+	   }
+	   else if(abs(vertexHeight)>=uheight&&abs(vertexHeight)<=uheight+height1)//第一个渐变高度
+	   {
+	   		float ratio=(abs(vertexHeight)-uheight)/height1;
+	   		finalColor0 *=(1.0-ratio); 
+	   		finalColor1 *=ratio;
+	   		gl_FragColor =finalColor1 + finalColor0; 
+	   }
+	   else if(abs(vertexHeight)>uheight+height1&&abs(vertexHeight)<=uheight_span-height2)
+	   {
+	   		gl_FragColor =finalColor1;
+	   }
+	   else if(abs(vertexHeight)>=uheight_span-height2&&abs(vertexHeight)<=uheight_span)
+	   {
+	   		float ratio=(abs(vertexHeight)-uheight_span+height2)/height2;
+	   		finalColor1 *=(1.0-ratio); 
+	   		finalColor0 *=ratio;
+	   		gl_FragColor =finalColor1 + finalColor0; 
+	   }
+	   else if(abs(vertexHeight)>=uheight_span&&abs(vertexHeight)<=uheight_span+height3)
+	   {
+	   		float ratio=(abs(vertexHeight)-uheight_span)/height3;
+	   		finalColor0 *=(1.0-ratio); 
+	   		finalColor2 *=ratio;
+	   		finalColor0.a=0.2;
+	   		gl_FragColor =finalColor2 + finalColor0; 
+	   }   
+	   else
+	   {
+	    	gl_FragColor = finalColor2; 
+	   }  
+	}
+	else
+	{
+		
+		if(abs(vertexHeight)<land1)
+		{
+			gl_FragColor = finalColor2; 
+		}
+		else if(abs(vertexHeight)>=land1&&abs(vertexHeight)<=land2)
+		{
+			float ratio=(abs(vertexHeight)-land1)/(land2-land1);
+	   		finalColor2 *=(1.0-ratio); 
+	   		finalColor4 *=ratio;
+	   		gl_FragColor =finalColor2 + finalColor4; 
+		}
+		else
+		{
+			gl_FragColor = finalColor4; 
+		}
+	} 
+}