work on fully shader volumetric

assets/Shaders/clouds1/clouds1.fs

@@ -0,0 +1,103 @@
+//version
+#version 330 core
+
+//macros
+#extension GL_ARB_explicit_uniform_location : enable
+
+//output
+out vec4 fragColor;
+
+//input
+in vec3 FragPos;
+in vec3 Normal;
+in vec2 TexCoord;
+in vec4 projCoord;
+in vec4 modelCoord;
+
+//uniforms
+uniform float time;
+uniform mat4 model;
+uniform vec3 viewPos;
+
+const float CONTACT_TEST_MARGIN = -0.001;
+
+/*
+Main method
+*/
+void main(){
+    
+    float timeS = time * 0.01;
+    
+    // Normalized pixel coordinates (from 0 to 1)
+    vec3 projCoordNorm = projCoord.xyz / projCoord.w / 2.0 + 0.5;
+    //make vec2
+    vec2 finalProd = projCoordNorm.xy;
+
+    //get vector that describes the movement through the cube
+    vec3 viewDir = normalize(viewPos - FragPos);
+    //need to transform to model space
+    //get inverse of model transform
+    mat4 inverseModel = inverse(model);
+    //apply to view dir
+    vec4 modelViewDir = normalize(inverseModel * vec4(viewDir,1.0));
+
+    //where the vector first hits the cube
+    vec4 contactPoint = modelCoord;
+
+    
+    float red = 1.0;
+    float green = 1.0;
+    float blue = 1.0;
+
+    red = modelViewDir.x;
+    green = modelViewDir.y;
+    blue = modelViewDir.z;
+
+
+    //need to calculate exit point
+    //if we hit one of the X edges
+    vec4 backPoint = vec4(1.0);
+    if(abs(contactPoint.x)-1.0>CONTACT_TEST_MARGIN){
+        red = 1.0;
+        //discard if backface
+        if(sign(contactPoint.x)!=sign(modelViewDir.x)){
+            discard;
+        }
+        //calculate distance to nearest face
+        float distX = 2.0;
+        //this is some really weird logic that I believe works to calculate distance to nearest face
+        float distY = abs(sign(modelViewDir.y) - contactPoint.y);
+        float distZ = abs(sign(modelViewDir.z) - contactPoint.z);
+        //calculate number of times to add viewDir to get dist
+        float scaleX = distX / modelViewDir.x;
+        float scaleY = distY / modelViewDir.y;
+        float scaleZ = distZ / modelViewDir.z;
+        //this is the smallest distance of all of them
+        float minScale = min(scaleX,min(scaleY,scaleZ));
+        backPoint = contactPoint + (modelViewDir * minScale);
+        float dist = length(abs(vec3(contactPoint) - vec3(backPoint)))/1.0;
+        red = green = blue = dist;
+    } else if(abs(contactPoint.y)-1.0>CONTACT_TEST_MARGIN){
+        green = 1.0;
+        //discard if backface
+        if(sign(contactPoint.y)!=sign(modelViewDir.y)){
+            discard;
+        }
+    } else if(abs(contactPoint.z)-1.0>CONTACT_TEST_MARGIN){
+        blue = 1.0;
+        //discard if backface
+        if(sign(contactPoint.z)!=sign(modelViewDir.z)){
+            discard;
+        }
+    }
+
+
+    vec4 color = vec4(
+        red,
+        green,
+        blue,
+        0.3
+        );
+        
+    fragColor = color;
+}

assets/Shaders/clouds1/clouds1.vs

@@ -0,0 +1,44 @@
+//Vertex Shader
+#version 330 core
+
+
+
+//input buffers
+layout (location = 0) in vec3 aPos;
+layout (location = 1) in vec3 aNormal;
+layout (location = 4) in vec2 aTex;
+
+
+//coordinate space transformation matrices
+uniform mat4 model;
+uniform mat4 view;
+uniform mat4 projection;
+uniform float time;
+
+
+
+//output buffers
+out vec3 FragPos;
+out vec3 Normal;
+out vec2 TexCoord;
+out vec4 projCoord;
+out vec4 modelCoord;
+
+
+
+void main() {
+    //normalize posiiton and normal
+    vec4 FinalVertex = vec4(aPos, 1.0);
+    vec4 FinalNormal = vec4(aNormal, 1.0);
+
+
+    //push frag, normal, and texture positions to fragment shader
+    FragPos = vec3(model * FinalVertex);
+    Normal = mat3(transpose(inverse(model))) * aNormal;
+    TexCoord = aTex;
+    projCoord = projection * view * model * FinalVertex;
+    modelCoord = FinalVertex;
+    
+    //set final position with opengl space
+    gl_Position = projection * view * model * FinalVertex;
+}

src/main/java/electrosphere/engine/LoadingThread.java

@@ -46,6 +46,7 @@ import electrosphere.net.client.ClientNetworking;
 import electrosphere.net.server.Server;
 import electrosphere.renderer.Mesh;
 import electrosphere.renderer.Model;
+import electrosphere.renderer.ModelUtils;
 import electrosphere.renderer.RenderUtils;
 import electrosphere.renderer.RenderingEngine;
 import electrosphere.renderer.actor.Actor;
@@ -683,6 +684,16 @@ public class LoadingThread extends Thread {
         Entity sword = ItemUtils.spawnBasicItem("Katana");
         EntityUtils.getPosition(sword).set(new Vector3f(1,0.4f,2));
         EntityUtils.getRotation(sword).set(new Quaternionf().rotationY((float)(Math.PI/2.0)));
+
+
+
+        //work on ez volumetrics shader
+        Entity myCube = EntityUtils.spawnDrawableEntity("Models/unitcube.fbx");
+        EntityUtils.getActor(myCube).maskShader("Cube", "Shaders/clouds1/clouds1.vs", "Shaders/clouds1/clouds1.fs");
+        Globals.assetManager.addShaderToQueue("Shaders/clouds1/clouds1.vs", "Shaders/clouds1/clouds1.fs");
+        myCube.putData(EntityDataStrings.DRAW_TRANSPARENT_PASS, true);
+        EntityUtils.getPosition(myCube).set(3,1,3);
+
         // Globals.entityManager.registerBehaviorTree(new BehaviorTree() {
         //     int i = 0;
         //     public void simulate(){

src/main/java/electrosphere/renderer/RenderUtils.java

@@ -1789,4 +1789,5 @@ public class RenderUtils {
 
     
 
+    
 }