Fix dust rendering

shader/cloud/basic.frag

@@ -1,30 +1,15 @@
 #version 450 core
 in vec4 vPosID;
 in vec4 vCol;
-in vec4 vCenterSize;
 in vec4 vControls;
 layout (location=0) out vec4 fCol;
 layout (location=1) out vec4 fPos;
 layout (location=2) out vec4 fNorm;
 void main()
 {
-    // there are quite a few intricate controls concerning the normals
-    // we want normals to be bigger towards the center, so that when two clouds
-    // are blended central normals predominate
-    // similarly, we want normals to be bigger the further up the cloud is
-    // finally, we want normals to allow for shadows at the edge of a cloud
-    // when a light is direcly above the cloud
     float d = dot(vControls,vControls);
     if (d > 1) {discard;}
     fCol = vec4(vCol.xyz,vCol.w*(1-d));
-    //fCol = vCol;
-    //float rad = vCenterSize.w*0.5;
-    float rad = vCenterSize.w;
-    float h = (1-d) * rad;
-    fPos = vec4(vPosID.xy, vPosID.z + h, vCol.w*(1-d));
-    //vec3 vCen = 
-    //vec3 fn1 = fPos.z*normalize(vec3(vCenterSize.xyz - fPos.xyz));
-    vec3 fn1 = fPos.z*normalize(vec3(vCenterSize.xy - vPosID.xy,0));
-    //fNorm = vec4(fn1,fPos.w);
-    fNorm = vec4(vControls.xy, 0.1 ,fPos.w);
+    fPos = vec4(vPosID.xyz, vCol.w*(1-d));
+    fNorm = vec4(vControls.xy, 0.1 ,fPos.w); // note arbirary 0.1, might want to point downwards at the edges?
 }

shader/cloud/basic.vert

@@ -1,18 +1,18 @@
 #version 450 core
 layout (location = 0) in vec4 posID;
 layout (location = 1) in vec4 col;
-layout (location = 2) in vec4 centerSize;
-layout (location = 3) in vec4 controls;
+//layout (location = 2) in vec4 centerSize;
+layout (location = 2) in vec4 controls;
 layout (std140, binding = 0) uniform TheMat { mat4 theMat; } ;
 out vec4 vPosID;
 out vec4 vCol;
-out vec4 vCenterSize;
+//out vec4 vCenterSize;
 out vec4 vControls;
 void main()
 {
   gl_Position = theMat * vec4(posID.xyz,1);
   vPosID = posID;
   vCol = col;
-  vCenterSize = centerSize;
+  //vCenterSize = centerSize;
   vControls = controls;
 }

src/Preload/Render.hs

@@ -120,7 +120,8 @@ preloadRender = do
     chasmshader <- makeShaderUsingVBO "positional/blank" [vert, frag] (toFloatVAs [3]) pmTriangles chasmvbo
 
     putStrLn "Setup cloud VBO, shader"
-    let cloudverxsizes = [4, 4, 4, 4]
+    --let cloudverxsizes = [4, 4, 4, 4]
+    let cloudverxsizes = [4, 4, 4]
     cloudvbo <- setupVBO (floatSize * sum cloudverxsizes)
     (cloudshader, cloudebo) <-
         makeShaderEBO "cloud/basic" [vert, frag] (toFloatVAs cloudverxsizes) pmTriangles cloudvbo

src/Shader/Poke/Cloud.hs

@@ -22,7 +22,8 @@ pokeCloudVerx :: Ptr Float -> Cloud -> Int -> Int -> (Float, Float) -> IO ()
 pokeCloudVerx ptr cl nv i (dx, dy) =
     UV.imapM_ (pokeCloudFloat ptr (nv + i)) $
         UV.fromList
-            [x, y, cz, 1, r, g, b, a, cx, cy, cz, rad, dx, dy, 0, 0]
+            --[x, y, cz, 1, r, g, b, a, cx, cy, cz, rad, dx, dy, 0, 0]
+            [x, y, cz, 1, r, g, b, a, dx, dy, 0, 0]
   where
     V3 cx cy cz = _clPos cl
     V2 x y = V2 cx cy - rad *.* V2 dx dy
@@ -41,7 +42,8 @@ clColor = \case
 
 pokeCloudFloat :: Ptr Float -> Int -> Int -> Float -> IO ()
 {-# INLINE pokeCloudFloat #-}
-pokeCloudFloat ptr nv i = pokeElemOff ptr (nv * 16 + i)
+--pokeCloudFloat ptr nv i = pokeElemOff ptr (nv * 16 + i)
+pokeCloudFloat ptr nv i = pokeElemOff ptr (nv * 12 + i)
 
 pokeCloudIndex :: Ptr GLushort -> Int -> Int -> Int -> Int -> IO ()
 {-# INLINE pokeCloudIndex #-}
@@ -58,7 +60,8 @@ pokeDustVerx :: Ptr Float -> Dust -> Int -> Int -> (Float, Float) -> IO ()
 pokeDustVerx ptr cl nv i (dx, dy) =
     UV.imapM_ (pokeDustFloat ptr (nv + i)) $
         UV.fromList
-            [x, y, cz, 1, r, g, b, a, cx, cy, cz, rad, dx, dy, 0, 0]
+            --[x, y, cz, 1, r, g, b, a, cx, cy, cz, rad, dx, dy, 0, 0]
+            [x, y, cz, 1, r, g, b, a, dx, dy, 0, 0]
   where
     V3 cx cy cz = _dsPos cl
     V2 x y = V2 cx cy - rad *.* V2 dx dy
@@ -73,7 +76,8 @@ dustColor = materialColor . _dsType
 
 pokeDustFloat :: Ptr Float -> Int -> Int -> Float -> IO ()
 {-# INLINE pokeDustFloat #-}
-pokeDustFloat ptr nv i = pokeElemOff ptr (nv * 16 + i)
+--pokeDustFloat ptr nv i = pokeElemOff ptr (nv * 16 + i)
+pokeDustFloat ptr nv i = pokeElemOff ptr (nv * 12 + i)
 
 pokeDustIndex :: Ptr GLushort -> Int -> Int -> Int -> Int -> IO ()
 {-# INLINE pokeDustIndex #-}