Transparent texture rendering handling.

cube.obj

@@ -12,15 +12,15 @@ vt 0 1 #2
 vt 1 0 #3
 vt 1 1 #4
 
-f 1/2 3/1 7/3 #South
-f 1/2 7/3 5/4
-f 5/2 7/1 8/3 #East
-f 5/2 8/3 6/4
-f 6/2 8/1 4/3 #North
-f 6/2 4/3 2/4
-f 2/2 4/1 3/3 #West
-f 2/2 3/3 1/4
-f 3/2 4/1 8/3 #Top
-f 3/2 8/3 7/4
-f 6/2 2/1 1/3 #Bottom
-f 6/2 1/3 5/4
+f 1/2 3/1 7/3 #South/0
+f 1/2 7/3 5/4 #1
+f 5/2 7/1 8/3 #East/2
+f 5/2 8/3 6/4 #3
+f 6/2 8/1 4/3 #North/4
+f 6/2 4/3 2/4 #5
+f 2/2 4/1 3/3 #West/6
+f 2/2 3/3 1/4 #7
+f 3/2 4/1 8/3 #Top/8
+f 3/2 8/3 7/4 #9
+f 6/2 2/1 1/3 #Bottom/10
+f 6/2 1/3 5/4 #11

pom.xml

@@ -17,12 +17,6 @@
   </properties>
 
   <dependencies>
-    <!-- https://mvnrepository.com/artifact/org.jogamp.jogl/jogl-all-main -->
-    <dependency>
-      <groupId>org.jogamp.jogl</groupId>
-      <artifactId>jogl-all-main</artifactId>
-      <version>2.3.2</version>
-    </dependency>
   </dependencies>
 
   <build>

src/sig/Block.java

@@ -21,27 +21,57 @@ public class Block {
     public void updateFaces() {
         if (SigRenderer.blockGrid.containsKey(pos.x+"_"+(pos.y+1)+"_"+pos.z)) {
             neighbors.UP=true;
+            if (block.triangles.get(Texture.TOP).tex.hasTransparency==SigRenderer.blockGrid.get(pos.x+"_"+(pos.y+1)+"_"+pos.z).block.triangles.get(Texture.BOTTOM).tex.hasTransparency) {
                 SigRenderer.blockGrid.get(pos.x+"_"+(pos.y+1)+"_"+pos.z).neighbors.DOWN=true;
+            } else
+            if (block.triangles.get(Texture.TOP).tex.hasTransparency&&!SigRenderer.blockGrid.get(pos.x+"_"+(pos.y+1)+"_"+pos.z).block.triangles.get(Texture.BOTTOM).tex.hasTransparency) {
+                SigRenderer.blockGrid.get(pos.x+"_"+(pos.y+1)+"_"+pos.z).neighbors.DOWN=false;
+            }
         }
         if (SigRenderer.blockGrid.containsKey(pos.x+"_"+(pos.y-1)+"_"+pos.z)) {
             neighbors.DOWN=true;
+            if (block.triangles.get(Texture.BOTTOM).tex.hasTransparency==SigRenderer.blockGrid.get(pos.x+"_"+(pos.y-1)+"_"+pos.z).block.triangles.get(Texture.TOP).tex.hasTransparency) {
                 SigRenderer.blockGrid.get(pos.x+"_"+(pos.y-1)+"_"+pos.z).neighbors.UP=true;
+            } else
+            if (block.triangles.get(Texture.BOTTOM).tex.hasTransparency&&!SigRenderer.blockGrid.get(pos.x+"_"+(pos.y-1)+"_"+pos.z).block.triangles.get(Texture.TOP).tex.hasTransparency) {
+                SigRenderer.blockGrid.get(pos.x+"_"+(pos.y-1)+"_"+pos.z).neighbors.UP=false;
+            }
         }
         if (SigRenderer.blockGrid.containsKey((pos.x-1)+"_"+(pos.y)+"_"+pos.z)) {
             neighbors.LEFT=true;
+            if (block.triangles.get(Texture.WEST).tex.hasTransparency==SigRenderer.blockGrid.get((pos.x-1)+"_"+(pos.y)+"_"+pos.z).block.triangles.get(Texture.EAST).tex.hasTransparency) {
                 SigRenderer.blockGrid.get((pos.x-1)+"_"+(pos.y)+"_"+pos.z).neighbors.RIGHT=true;
+            } else
+            if (block.triangles.get(Texture.WEST).tex.hasTransparency&&!SigRenderer.blockGrid.get((pos.x-1)+"_"+(pos.y)+"_"+pos.z).block.triangles.get(Texture.EAST).tex.hasTransparency) {
+                SigRenderer.blockGrid.get((pos.x-1)+"_"+(pos.y)+"_"+pos.z).neighbors.RIGHT=false;
+            }
         }
         if (SigRenderer.blockGrid.containsKey((pos.x+1)+"_"+(pos.y)+"_"+pos.z)) {
             neighbors.RIGHT=true;
+            if (block.triangles.get(Texture.EAST).tex.hasTransparency==SigRenderer.blockGrid.get((pos.x+1)+"_"+(pos.y)+"_"+pos.z).block.triangles.get(Texture.WEST).tex.hasTransparency) {
                 SigRenderer.blockGrid.get((pos.x+1)+"_"+(pos.y)+"_"+pos.z).neighbors.LEFT=true;
+            } else
+            if (block.triangles.get(Texture.EAST).tex.hasTransparency&&!SigRenderer.blockGrid.get((pos.x+1)+"_"+(pos.y)+"_"+pos.z).block.triangles.get(Texture.WEST).tex.hasTransparency) {
+                SigRenderer.blockGrid.get((pos.x+1)+"_"+(pos.y)+"_"+pos.z).neighbors.LEFT=false;
+            }
         }
         if (SigRenderer.blockGrid.containsKey(pos.x+"_"+(pos.y)+"_"+(pos.z+1))) {
             neighbors.FORWARD=true;
+            if (block.triangles.get(Texture.SOUTH).tex.hasTransparency==SigRenderer.blockGrid.get(pos.x+"_"+(pos.y)+"_"+(pos.z+1)).block.triangles.get(Texture.NORTH).tex.hasTransparency) {
                 SigRenderer.blockGrid.get(pos.x+"_"+(pos.y)+"_"+(pos.z+1)).neighbors.BACKWARD=true;
+            } else
+            if (block.triangles.get(Texture.SOUTH).tex.hasTransparency&&!SigRenderer.blockGrid.get(pos.x+"_"+(pos.y)+"_"+(pos.z+1)).block.triangles.get(Texture.NORTH).tex.hasTransparency) {
+                SigRenderer.blockGrid.get(pos.x+"_"+(pos.y)+"_"+(pos.z+1)).neighbors.BACKWARD=false;
+            }
         }
         if (SigRenderer.blockGrid.containsKey(pos.x+"_"+(pos.y)+"_"+(pos.z-1))) {
             neighbors.BACKWARD=true;
+            if (block.triangles.get(Texture.NORTH).tex.hasTransparency==SigRenderer.blockGrid.get(pos.x+"_"+(pos.y)+"_"+(pos.z-1)).block.triangles.get(Texture.SOUTH).tex.hasTransparency) {
                 SigRenderer.blockGrid.get(pos.x+"_"+(pos.y)+"_"+(pos.z-1)).neighbors.FORWARD=true;
+            } else
+            if (block.triangles.get(Texture.NORTH).tex.hasTransparency&&!SigRenderer.blockGrid.get(pos.x+"_"+(pos.y)+"_"+(pos.z-1)).block.triangles.get(Texture.SOUTH).tex.hasTransparency) {
+                SigRenderer.blockGrid.get(pos.x+"_"+(pos.y)+"_"+(pos.z-1)).neighbors.FORWARD=false;
+            }
         }
     }
     @Override

src/sig/Panel.java

@@ -9,6 +9,7 @@ import java.awt.Color;
 import java.awt.Image;
 import java.awt.image.MemoryImageSource;
 import java.util.ArrayList;
+import java.util.Collection;
 import java.util.HashMap;
 import java.util.List;
 import java.util.concurrent.ConcurrentLinkedQueue;
@@ -176,7 +177,12 @@ public class Panel extends JPanel implements Runnable {
         SigRenderer.tempAnswer=null;
         long totalTime=0;
         long startTime2=0;
-        ConcurrentLinkedQueue<Triangle> currentRender = (renderFirst)?accumulatedTris1:accumulatedTris2;
+        Collection<Triangle> currentRender = (renderFirst)?accumulatedTris1:accumulatedTris2;
+        List<Triangle> newTris = new ArrayList<>();
+        for (Triangle t:currentRender) {
+            prepareTriForRender(matWorld, matView, t.unmodifiedTri, newTris, true);
+        }
+        currentRender=newTris;
         for (Triangle t : currentRender) {
             Triangle[] clipped = new Triangle[]{new Triangle(),new Triangle()};
             List<Triangle> triList = new ArrayList<>();
@@ -206,7 +212,11 @@ public class Panel extends JPanel implements Runnable {
             }
             for (Triangle tt : triList) {
                 if (tt.tex!=null) {
-                    //tt.unmodifiedTri.nextRenderTime=System.currentTimeMillis()+200;
+                    if (renderFirst) {
+                        tt.unmodifiedTri.nextRenderTime=System.currentTimeMillis()+200;
+                    } else {
+                        tt.unmodifiedTri.nextRenderTime2=System.currentTimeMillis()+200;
+                    }
                     DrawUtils.TexturedTriangle(p, 
                         (int)tt.A.x,(int)tt.A.y,tt.T.u,tt.T.v,tt.T.w,
                         (int)tt.B.x,(int)tt.B.y,tt.U.u,tt.U.v,tt.U.w,
@@ -228,7 +238,7 @@ public class Panel extends JPanel implements Runnable {
             for (int y=0;y<SigRenderer.SCREEN_HEIGHT;y++) {
                 Triangle t = SigRenderer.depthBuffer_tri[x+y*SigRenderer.SCREEN_WIDTH];
                 if (t!=null) {
-                    t.nextRenderTime=-1;
+                    t.nextRenderTime=t.nextRenderTime2=-1;
                 }
             }
         }
@@ -239,8 +249,12 @@ public class Panel extends JPanel implements Runnable {
         }
     }
     
-    private void prepareTriForRender(Matrix matWorld, Matrix matView, Triangle t, ConcurrentLinkedQueue<Triangle> accumulatedTris) {
-        if (t.nextRenderTime<=System.currentTimeMillis()) {
+    private void prepareTriForRender(Matrix matWorld, Matrix matView, Triangle t, Collection<Triangle> accumulatedTris) {
+        prepareTriForRender(matWorld,matView,t,accumulatedTris,false);
+    }
+
+    private void prepareTriForRender(Matrix matWorld, Matrix matView, Triangle t, Collection<Triangle> accumulatedTris, boolean buffer) {
+        if (!buffer||(buffer&&t.nextRenderTime<=System.currentTimeMillis())) {
             Triangle triProjected = new Triangle(),triTransformed=new Triangle(),triViewed=new Triangle();
 
             if (t.b!=null) {

src/sig/SigRenderer.java

@@ -2,8 +2,6 @@ package sig;
 import javax.imageio.ImageIO;
 import javax.swing.JFrame;
 
-import sig.utils.OBJReader;
-
 import java.awt.event.MouseEvent;
 import java.awt.event.MouseListener; 
 import java.awt.event.MouseMotionListener;
@@ -13,14 +11,10 @@ import java.io.File;
 import java.io.IOException;
 import java.awt.event.KeyEvent;
 import java.awt.event.KeyListener;
-import java.util.ArrayList;
-import java.util.Arrays;
 import java.util.HashMap;
 import java.util.List;
-import java.util.Map;
 import java.util.Random;
 import java.util.concurrent.ConcurrentHashMap;
-import java.util.concurrent.ConcurrentLinkedQueue;
 import java.awt.Toolkit;
 import java.awt.BorderLayout;
 
@@ -110,14 +104,22 @@ public class SigRenderer implements KeyListener,MouseListener,MouseMotionListene
     SigRenderer(JFrame f) {
         //cube = new Mesh(OBJReader.ReadOBJFile("teapot.obj",false));
         Random r = new Random(438107);
-        for (int x=0;x<256;x++) {
-            for (int z=0;z<256;z++) {
-                if (Math.random()<=0.5) {
+        for (int x=0;x<64;x++) {
+            for (int z=0;z<64;z++) {
                 addBlock(new Vector(x,0,z),BlockType.DIRT);
+                /*
+                if (Math.random()<=0.5) {
+                    addBlock(new Vector(x,y,z),BlockType.GLASS);
                 } else {
-                    addBlock(new Vector(x,0,z),BlockType.SNOW_DIRT);
+                    addBlock(new Vector(x,y,z),BlockType.SNOW_DIRT);
+                }*/
             }
         }
+
+        for (int x=0;x<64;x++) {
+            for (int y=0;y<5;y++) {
+                addBlock(new Vector(x,y,16),BlockType.GLASS);
+            }
         }
 
         Panel p = new Panel();
@@ -169,15 +171,19 @@ public class SigRenderer implements KeyListener,MouseListener,MouseMotionListene
             WritableRaster r = img.getRaster();
             for (TextureType tt : TextureType.values()) {
                 int[] pixelData = new int[tt.texWidth*BLOCK_WIDTH*tt.texHeight*BLOCK_HEIGHT];
+                Texture tex = new Texture(pixelData,tt.texWidth*BLOCK_WIDTH,tt.texHeight*BLOCK_HEIGHT);
                 int startX=tt.texX*BLOCK_WIDTH;
                 int startY=tt.texY*BLOCK_HEIGHT;
                 for (int x=0;x<tt.texWidth*BLOCK_WIDTH;x++) {
                     for (int y=0;y<tt.texHeight*BLOCK_HEIGHT;y++) {
                         int[] pixel = r.getPixel(x+startX,y+startY,new int[4]);
                         pixelData[x+y*tt.texWidth*BLOCK_WIDTH]=pixel[2]+(pixel[1]<<8)+(pixel[0]<<16)+(pixel[3]<<24);
+                        if (pixel[3]<255) {
+                            tex.hasTransparency=true;
+                        }
                     }
                 }
-                blockTextures.put(tt,new Texture(pixelData,tt.texWidth*BLOCK_WIDTH,tt.texHeight*BLOCK_HEIGHT));
+                blockTextures.put(tt,tex);
             }
 
             JFrame f = new JFrame("SigRenderer");

src/sig/Texture.java

@@ -13,6 +13,7 @@ public class Texture{
     int[] tex;
     int width;
     int height;
+    public boolean hasTransparency=false;
 
     public Texture(File f) {
         try {
@@ -33,6 +34,13 @@ public class Texture{
         }
     }
 
+    public static final int SOUTH = 0;
+    public static final int EAST = 2;
+    public static final int NORTH = 4;
+    public static final int WEST = 6;
+    public static final int TOP = 8;
+    public static final int BOTTOM = 10;
+
     public Texture(int[] tex,int width,int height) {
         this.tex=tex;
         this.width=width;
@@ -47,7 +55,7 @@ public class Texture{
         } else {
             int indice = (int)(u*width-1)+(int)(v*height-1)*width;
             //return tex[indice];
-            return (int)((tex[indice]&0xFF)*mult) + ((int)(((tex[indice]&0xFF00)>>8)*mult)<<8) + ((int)(((tex[indice]&0xFF0000)>>16)*mult)<<16);
+            return (int)((tex[indice]&0xFF)*mult) + ((int)(((tex[indice]&0xFF00)>>>8)*mult)<<8) + ((int)(((tex[indice]&0xFF0000)>>>16)*mult)<<16) + ((((tex[indice]&0xFF000000)>>>24))<<24);
             /*Color newCol = new Color(tex.getRGB(sx,sy));
             return new Color((newCol.getRed()/255f)*mult,(newCol.getGreen()/255f)*mult,(newCol.getBlue()/255f)*mult);*/
         }

src/sig/Triangle.java

@@ -8,6 +8,7 @@ public class Triangle {
     public Block b = null;
     public Texture tex = null;
     public long nextRenderTime = -1l;
+    public long nextRenderTime2 = -1l;
     public Triangle unmodifiedTri;
     public Triangle() {
         this(new Vector(),new Vector(),new Vector());

src/sig/utils/DrawUtils.java

@@ -84,10 +84,15 @@ public class DrawUtils {
                         if (SigRenderer.request!=null&&j==SigRenderer.request.getX()&&i==SigRenderer.request.getY()) {
                             SigRenderer.tempAnswer=ref.b;
                         }
-                        Draw(canvas,j,i,texture.getColor(tex_u/tex_w,tex_v/tex_w,colorMult/255f));
+                        int col = texture.getColor(tex_u/tex_w,tex_v/tex_w,colorMult/255f);
+                        if (((col&0xFF000000)>>>24)!=0) {
+                            Draw(canvas,j,i,col);
+                        }
+                        if (((col&0xFF000000)>>>24)==255) {
                             SigRenderer.depthBuffer[i*SigRenderer.SCREEN_WIDTH+j] = tex_w;
                             SigRenderer.depthBuffer_tri[i*SigRenderer.SCREEN_WIDTH+j] = ref.unmodifiedTri;
                         }
+                    } 
                     t+=tstep;
                 }
             }
@@ -140,10 +145,15 @@ public class DrawUtils {
                         if (SigRenderer.request!=null&&j==SigRenderer.request.getX()&&i==SigRenderer.request.getY()) {
                             SigRenderer.tempAnswer=ref.b;
                         }
-                        Draw(canvas,j,i,texture.getColor(tex_u/tex_w,tex_v/tex_w,colorMult/255f));
+                        int col = texture.getColor(tex_u/tex_w,tex_v/tex_w,colorMult/255f);
+                        if (((col&0xFF000000)>>>24)!=0) {
+                            Draw(canvas,j,i,col);
+                        }
+                        if (((col&0xFF000000)>>>24)==255) {
                             SigRenderer.depthBuffer[i*SigRenderer.SCREEN_WIDTH+j] = tex_w;
                             SigRenderer.depthBuffer_tri[i*SigRenderer.SCREEN_WIDTH+j] = ref.unmodifiedTri;
                         }
+                    }
                     t+=tstep;
                 }
             }