From 7ac1b01c591ed65743676b1181d60eb17c5cb69d Mon Sep 17 00:00:00 2001
From: Normand Briere <nbriere@noware.ca>
Date: Wed, 21 Aug 2019 18:58:52 -0400
Subject: [PATCH] U dir and average.

---
 CameraPane.java |   63 +++++++++++++++++++++----------
 1 files changed, 43 insertions(+), 20 deletions(-)

diff --git a/CameraPane.java b/CameraPane.java
index e8611a1..7370fc9 100644
--- a/CameraPane.java
+++ b/CameraPane.java
@@ -542,7 +542,8 @@
                 LA.vecSub(pv/*.pos*/, rv/*.pos*/, obj.v1);
                 LA.vecCross(obj.v0, obj.v1, obj.v2);
                 LA.vecNormalize(obj.v2);
-                gl.glNormal3f((float) obj.v2.x, (float) obj.v2.y, (float) obj.v2.z);
+                
+                SetGLNormal(gl, (float) obj.v2.x, (float) obj.v2.y, (float) obj.v2.z);
             }
 
             // P
@@ -564,7 +565,7 @@
                 y += ny * obj.NORMALPUSH;
                 z += nz * obj.NORMALPUSH;
                 
-                gl.glNormal3f(nx, ny, nz);
+                SetGLNormal(gl, nx, ny, nz);
             }
             gl.glColor4f(pv.AO, pv.AO, pv.AO, 1);
             SetColor(obj, pv);
@@ -596,7 +597,7 @@
                 y += ny * obj.NORMALPUSH;
                 z += nz * obj.NORMALPUSH;
                 
-                gl.glNormal3f(nx, ny, nz);
+                SetGLNormal(gl, nx, ny, nz);
             }
             //System.out.println("vertexq = " + qv.s + ", " + qv.t);
         //    boolean locked = false;
@@ -644,7 +645,7 @@
                 y += ny * obj.NORMALPUSH;
                 z += nz * obj.NORMALPUSH;
                 
-                gl.glNormal3f(nx, ny, nz);
+                SetGLNormal(gl, nx, ny, nz);
             }
             
         //    if ((dot&4) == 0)
@@ -1250,10 +1251,10 @@
                             {
                                 if (n[count3] != 0 || n[count3 + 1] != 0 || n[count3 + 2] != 0)
                                 {
-                                    gl.glNormal3f(n[count3], n[count3 + 1], n[count3 + 2]);
+                                    SetGLNormal(gl, n[count3], n[count3 + 1], n[count3 + 2]);
                                 } else
                                 {
-                                    gl.glNormal3f(0, 0, 1);
+                                    SetGLNormal(gl, 0, 0, 1);
                                 }
 
                                 if (c != null)
@@ -1277,10 +1278,10 @@
                             {
                                 if (n[count3] != 0 || n[count3 + 1] != 0 || n[count3 + 2] != 0)
                                 {
-                                    gl.glNormal3f(n[count3], n[count3 + 1], n[count3 + 2]);
+                                    SetGLNormal(gl, n[count3], n[count3 + 1], n[count3 + 2]);
                                 } else
                                 {
-                                    gl.glNormal3f(0, 0, 1);
+                                    SetGLNormal(gl, 0, 0, 1);
                                 }
                                 if (c != null)
                                 {
@@ -1305,10 +1306,10 @@
                                 {
                                     if (n[count3] != 0 || n[count3 + 1] != 0 || n[count3 + 2] != 0)
                                     {
-                                        gl.glNormal3f(n[count3], n[count3 + 1], n[count3 + 2]);
+                                        SetGLNormal(gl, n[count3], n[count3 + 1], n[count3 + 2]);
                                     } else
                                     {
-                                        gl.glNormal3f(0, 0, 1);
+                                        SetGLNormal(gl, 0, 0, 1);
                                     }
                                     if (c != null)
                                     {
@@ -1490,7 +1491,7 @@
     {
         if (!selectmode)
         {
-            gl.glNormal3f((float) pv.norm.x, (float) pv.norm.y, (float) pv.norm.z);
+            SetGLNormal(gl, (float) pv.norm.x, (float) pv.norm.y, (float) pv.norm.z);
             gl.glColor4f(pv.AO, pv.AO, pv.AO, 1);
             
             if (flipV)
@@ -2473,6 +2474,18 @@
         byte[] bytes = bytebuf.array();
         
         return CreateBim(bytes, width, height);
+    }
+
+    private void SetGLNormal(javax.media.opengl.GL gl, float nx, float ny, float nz)
+    {
+        gl.glNormal3f(nx, ny, nz);
+
+        if (ny > 0.9 || ny < -0.9)
+            // Ground or ceiling
+            gl.glVertexAttrib3f(4, 1, 0, 0);
+        else
+            // Walls
+            gl.glVertexAttrib3f(4, 0, 1, 0);
     }
 
     /**/
@@ -12940,13 +12953,17 @@
                 "MOV normald, normal;" +
                 "MOV normals, normal;" +
                 
+                "MOV temp, fragment.texcoord[4];" +
+                
                 // UV base		
                 //"DP3 UP.x,state.matrix.modelview.row[0],Y;" +
                 //"DP3 UP.y,state.matrix.modelview.row[1],Y;" +
                 //"DP3 UP.z,state.matrix.modelview.row[2],Y;" +
-                "DP3 UP.x,state.matrix.texture[7].row[0],Y;" +
-                "DP3 UP.y,state.matrix.texture[7].row[1],Y;" +
-                "DP3 UP.z,state.matrix.texture[7].row[2],Y;" +
+                "DP3 UP.x,state.matrix.texture[7].row[0],temp;" +
+                "DP3 UP.y,state.matrix.texture[7].row[1],temp;" +
+                "DP3 UP.z,state.matrix.texture[7].row[2],temp;" +
+                Normalize("UP") +
+                
                 "XPD V, normal, UP;" +
                 Normalize("V") +
                 "XPD U, V, normal;" +
@@ -12978,8 +12995,12 @@
                 
                 "SUB temp, temp, temp2;" +
                 
-                "TEX texSamp, temp, texture[0], 2D;" +
-                "POW texSamp.a, texSamp.a, params6.w;" + // punch through
+                "TEX temp, temp, texture[0], 2D;" +
+                "POW temp.a, temp.a, params6.w;" + // punch through
+                
+                "ADD texSamp, temp, texSamp;" +
+                "MUL temp.xyz, half, texSamp;" +
+                
                 "MOV alpha, texSamp.aaaa;" +
                 
 // parallax mapping
@@ -13936,7 +13957,7 @@
                 "PARAM p[4]    = { state.matrix.projection };     # modelview projection matrix\n" +
                 "PARAM zero    = { 0.0, 0.0, 0.0, 1.0 };" +
                 "PARAM half    = { 0.5, 0.5, 0.5, 1.0 };" +
-                "PARAM one     = { 1.0, 1.0, 1.0, 0.0 };" +
+                "PARAM one     = { 1.0, 1.0, 1.0, 1.0 };" +
                 "PARAM two     = { 2.0, 2.0, 2.0, 1.0 };" +
                 "PARAM third   = { 0.33333333333, 0.33333333333, 0.33333333333, 1.0 };" +
                 //"PARAM v256    = { 256.0, 256.0, 256.0, 1.0 };" +
@@ -13997,7 +14018,7 @@
                 "DP4 temp.x,state.matrix.texture[0].inverse.row[0],vertex.texcoord;" +
                 "DP4 temp.y,state.matrix.texture[0].inverse.row[1],vertex.texcoord;" +
                 "DP4 temp.z,state.matrix.texture[0].inverse.row[2],vertex.texcoord;" +
-                //"MOV result.texcoord, vertex.texcoord;" +
+                //"MOV result.texcoord, vertex.fogcoord;" +
                 "MOV result.texcoord, temp;" +
                 // border fade
                 "MOV result.texcoord[3], vertex.texcoord;" +
@@ -14044,7 +14065,9 @@
 
                 //"ADD temp.z, temp.z, one;" +
 
-                "MOV result.color, temp;"
+                "MOV result.texcoord[4], vertex.attrib[4];" + // U dir
+                
+                "MOV result.color, temp;" // Normal
                 : "MOV result.color, vertex.color;") +
                 ((mode & VP_PROJECTION) != 0 ? "MOV result.color, zero;"
                 : "") +
@@ -16925,7 +16948,7 @@
             gl.glScalef(1.0f, -1.0f, 1.0f);
         }
 
-        gl.glNormal3f(0.0f, 0.0f, 1.0f);
+        SetGLNormal(gl, 0.0f, 0.0f, 1.0f);
             
         float step = 2; // 0.1666f; //0.25f;
         float stepv = 2; // step * 1652 / 998;

--
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