init

src/Obj/Analysis/test/glsl.js

@@ -0,0 +1,72 @@
+export default `
+ #define USE_CUBE_MAP_SHADOW true
+ uniform sampler2D colorTexture;
+ uniform sampler2D depthTexture;
+ varying vec2 v_textureCoordinates;
+ uniform mat4 camera_projection_matrix;
+ uniform mat4 camera_view_matrix;
+ uniform vec4 helsing_visibleAreaColor;
+ uniform vec4 helsing_invisibleAreaColor;
+ uniform sampler2D helsing_texture;
+
+ vec4 getPositionEC(){
+     return czm_windowToEyeCoordinates(gl_FragCoord);
+ }
+
+ vec3 getNormalEC(){
+     return vec3(1.);
+ }
+
+ vec4 toEye(in vec2 uv,in float depth){
+     vec2 xy=vec2((uv.x*2.-1.),(uv.y*2.-1.));
+     vec4 posInCamera=czm_inverseProjection*vec4(xy,depth,1.);
+     posInCamera=posInCamera/posInCamera.w;
+     return posInCamera;
+ }
+
+ vec3 pointProjectOnPlane(in vec3 planeNormal,in vec3 planeOrigin,in vec3 point){
+     vec3 v01=point-planeOrigin;
+     float d=dot(planeNormal,v01);
+     return(point-planeNormal*d);
+ }
+
+ float getDepth(in vec4 depth){
+     float z_window=czm_unpackDepth(depth);
+     z_window=czm_reverseLogDepth(z_window);
+     float n_range=czm_depthRange.near;
+     float f_range=czm_depthRange.far;
+     return(2.*z_window-n_range-f_range)/(f_range-n_range);
+ }
+
+ bool visible(in vec4 result)
+ {
+     result.x/=result.w;
+     result.y/=result.w;
+     result.z/=result.w;
+     return result.x>=-1.&&result.x<=1.
+     &&result.y>=-1.&&result.y<=1.
+     &&result.z>=-1.&&result.z<=1.;
+ }
+
+ void main(){
+     // 釉色 = 结构二维(颜色纹理, 纹理坐标)
+     gl_FragColor = texture2D(colorTexture, v_textureCoordinates);
+     // 深度 = 获取深度(结构二维(深度纹理, 纹理坐标))
+     float depth = getDepth(texture2D(depthTexture, v_textureCoordinates));
+     // 视角 = (纹理坐标, 深度)
+     vec4 positionEC = toEye(v_textureCoordinates, depth);
+     // 世界坐标
+     vec4 wordPos = czm_inverseView * positionEC;
+     // 虚拟相机中坐标
+     vec4 vcPos = camera_view_matrix * wordPos;
+     vec4 videoColor = texture2D(helsing_texture, v_textureCoordinates);
+     float dis = length(vcPos.xyz);
+     vec4 posInEye = camera_projection_matrix * vcPos;
+         // 可视区颜色
+         // vec4 helsing_visibleAreaColor=vec4(0.,1.,0.,.5);
+         // vec4 helsing_invisibleAreaColor=vec4(1.,0.,0.,.5);
+         if(visible(posInEye)){
+            vec4 out_FragColor = helsing_visibleAreaColor;
+            gl_FragColor = mix(gl_FragColor,videoColor,1.0);
+        }
+ }`;