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SigKeeper
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Textured Triangles

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Joshua Sigona 3 years ago
parent 15ca32fac1
commit 498539a09e
4 changed files with 176 additions and 5 deletions
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  1. 2
      src/sig/Panel.java
  2. 157
      src/sig/RenderKernel.java
  3. 22
      src/sig/SigKeeper.java
  4. BIN
      textures_256.png

2
src/sig/Panel.java
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@ -52,7 +52,7 @@ public class Panel extends JPanel implements Runnable {
mImageProducer = new MemoryImageSource(width, height, cm, pixel,0, width);
mImageProducer.setAnimated(true);
mImageProducer.setFullBufferUpdates(true);
renderer = new RenderKernel(pixel,triPoints,SigKeeper.SCREEN_WIDTH,SigKeeper.SCREEN_HEIGHT);
renderer = new RenderKernel(pixel,triPoints,SigKeeper.texData,SigKeeper.SCREEN_WIDTH,SigKeeper.SCREEN_HEIGHT,256,256);
renderer.setExplicit(true);
imageBuffer = Toolkit.getDefaultToolkit().createImage(mImageProducer);
if(thread.isInterrupted() || !thread.isAlive()){

157
src/sig/RenderKernel.java
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@ -6,14 +6,18 @@ public class RenderKernel extends Kernel{
int[] pixels;
float[] tris;
int width;
int height;
int[] tex;
int width,tex_width;
int height,tex_height;
RenderKernel(int[] pixels,float[] tris,int width,int height) {
RenderKernel(int[] pixels,float[] tris,int[] tex,int width,int height,int tex_width,int tex_height) {
this.pixels=pixels;
this.tris=tris;
this.width=width;
this.height=height;
this.tex=tex;
this.tex_width=tex_width;
this.tex_height=tex_height;
}
@Override
@ -25,7 +29,152 @@ public class RenderKernel extends Kernel{
int y2=(int)tris[id*12+5];
int x3=(int)tris[id*12+8];
int y3=(int)tris[id*12+9];
FillTriangle(x1,y1,x2,y2,x3,y3,0xFF0000);
TexturedTriangle(
x1,y1,0f,0f,1f,
x2,y2,1f,0f,1f,
x3,y3,1f,1f,1f,
getGlobalId()%256,1f);
}
int getTextureColor(int tex_id,float u,float v,float colorMult) {
int x = (int)(u*16+(16*(tex_id%16)));
int y = (int)(v*16+(16*(tex_id/16)));
if (x<0||x>=256||y<0||y>=256) {
return 0;
} else {
int col = tex[x+y*tex_width];
if (colorMult==1f) {
return col;
} else
if (colorMult==0f) {
return 0;
} else {
return (int)(((col&0xFF)*colorMult)+((int)(((col&0xFF00)>>>8)*colorMult)<<8)+((int)(((col&0xFF0000)>>>16)*colorMult)<<16) + ((int)(((col&0xFF000000)>>>24))<<24));
}
}
}
void TexturedTriangle(int x1, int y1, float u1,float v1,float w1,
int x2, int y2, float u2,float v2,float w2,
int x3, int y3, float u3,float v3,float w3,
int tex_id, float colorMult
) {
if (y2<y1) {int t=y1;y1=y2;y2=t;t=x1;x1=x2;x2=t;float u=u1;u1=u2;u2=u;float v=v1;v1=v2;v2=v;float w=w1;w1=w2;w2=w;}
if (y3<y1) {int t=y1;y1=y3;y3=t;t=x1;x1=x3;x3=t;float u=u1;u1=u3;u3=u;float v=v1;v1=v3;v3=v;float w=w1;w1=w3;w3=w;}
if (y3<y2) {int t=y2;y2=y3;y3=t;t=x2;x2=x3;x3=t;float u=u2;u2=u3;u3=u;float v=v2;v2=v3;v3=v;float w=w2;w2=w3;w3=w;}
int dy1=y2-y1;
int dx1=x2-x1;
float dv1=v2-v1;
float du1=u2-u1;
float dw1=w2-w1;
int dy2=y3-y1;
int dx2=x3-x1;
float dv2=v3-v1;
float du2=u3-u1;
float dw2=w3-w1;
float tex_u=0f,tex_v=0f,tex_w=0f;
float dax_step=0,dbx_step=0,
du1_step=0,dv1_step=0,dw1_step=0,
du2_step=0,dv2_step=0,dw2_step=0;
if (dy1!=0) {dax_step=dx1/((float)Math.abs(dy1));}
if (dy2!=0) {dbx_step=dx2/((float)Math.abs(dy2));}
if (dy1!=0) {du1_step=du1/((float)Math.abs(dy1));}
if (dy1!=0) {dv1_step=dv1/((float)Math.abs(dy1));}
if (dy1!=0) {dw1_step=dw1/((float)Math.abs(dy1));}
if (dy2!=0) {du2_step=du2/((float)Math.abs(dy2));}
if (dy2!=0) {dv2_step=dv2/((float)Math.abs(dy2));}
if (dy2!=0) {dw2_step=dw2/((float)Math.abs(dy2));}
if (dy1!=0) {
for (int i=y1;i<=y2;i++) {
int ax=(int)(x1+((float)(i-y1))*dax_step);
int bx=(int)(x1+((float)(i-y1))*dbx_step);
float tex_su=u1+((float)(i-y1))*du1_step;
float tex_sv=v1+((float)(i-y1))*dv1_step;
float tex_sw=w1+((float)(i-y1))*dw1_step;
float tex_eu=u1+((float)(i-y1))*du2_step;
float tex_ev=v1+((float)(i-y1))*dv2_step;
float tex_ew=w1+((float)(i-y1))*dw2_step;
if (ax>bx) {
int t=ax;ax=bx;bx=t;
float u=tex_su;tex_su=tex_eu;tex_eu=u;
float v=tex_sv;tex_sv=tex_ev;tex_ev=v;
float w=tex_sw;tex_sw=tex_ew;tex_ew=w;
}
tex_u=tex_su;
tex_v=tex_sv;
tex_w=tex_sw;
float tstep = 1.0f/(float)(bx-ax);
float t=0.0f;
for (int j=ax;j<=bx;j++) {
tex_u=(1.0f-t)*tex_su+t*tex_eu;
tex_v=(1.0f-t)*tex_sv+t*tex_ev;
tex_w=(1.0f-t)*tex_sw+t*tex_ew;
int col = getTextureColor(tex_id,tex_u/tex_w,tex_v/tex_w,colorMult);
Draw(j,i,col);
t+=tstep;
}
}
}
dy1=y3-y2;
dx1=x3-x2;
dv1=v3-v2;
du1=u3-u2;
dw1=w3-w2;
if (dy1!=0) {dax_step=dx1/((float)Math.abs(dy1));}
if (dy2!=0) {dbx_step=dx2/((float)Math.abs(dy2));}
du1_step=0f;
dv1_step=0f;
if (dy1!=0) {du1_step=du1/((float)Math.abs(dy1));}
if (dy1!=0) {dv1_step=dv1/((float)Math.abs(dy1));}
if (dy1!=0) {dw1_step=dw1/((float)Math.abs(dy1));}
if (dy1!=0) {
for (int i=y2;i<=y3;i++) {
int ax=(int)(x2+((float)(i-y2))*dax_step);
int bx=(int)(x1+((float)(i-y1))*dbx_step);
float tex_su=u2+((float)(i-y2))*du1_step;
float tex_sv=v2+((float)(i-y2))*dv1_step;
float tex_sw=w2+((float)(i-y2))*dw1_step;
float tex_eu=u1+((float)(i-y1))*du2_step;
float tex_ev=v1+((float)(i-y1))*dv2_step;
float tex_ew=w1+((float)(i-y1))*dw2_step;
if (ax>bx) {
int t=ax;ax=bx;bx=t;
float u=tex_su;tex_su=tex_eu;tex_eu=u;
float v=tex_sv;tex_sv=tex_ev;tex_ev=v;
float w=tex_sw;tex_sw=tex_ew;tex_ew=w;
}
tex_u=tex_su;
tex_v=tex_sv;
tex_w=tex_sw;
float tstep = 1.0f/(float)(bx-ax);
float t=0.0f;
for (int j=ax;j<=bx;j++) {
tex_u=(1.0f-t)*tex_su+t*tex_eu;
tex_v=(1.0f-t)*tex_sv+t*tex_ev;
tex_w=(1.0f-t)*tex_sw+t*tex_ew;
int col = getTextureColor(tex_id,tex_u/tex_w,tex_v/tex_w,colorMult);
Draw(j,i,col);
t+=tstep;
}
}
}
}
void DrawHorizontalLine(int sx,int ex,int ny,int col) {

22
src/sig/SigKeeper.java
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@ -1,5 +1,6 @@
package sig;
import javax.imageio.ImageIO;
import javax.swing.JFrame;
import java.awt.Cursor;
import java.awt.event.MouseWheelListener;
@ -13,7 +14,11 @@ import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.BorderLayout;
import java.awt.image.BufferedImage;
import java.awt.image.WritableRaster;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.awt.GraphicsDevice;
import java.awt.GraphicsEnvironment;
@ -32,9 +37,24 @@ public class SigKeeper implements WindowFocusListener,KeyListener,MouseListener,
public static Cursor invisibleCursor;
public static List<Triangle> tris = new ArrayList<Triangle>();
public static int[] texData = new int[256*256];
SigKeeper() {
try {
BufferedImage img = ImageIO.read(new File("textures_256.png"));
WritableRaster r = img.getRaster();
for (int x=0;x<256;x++) {
for (int y=0;y<256;y++) {
int[] pixel = r.getPixel(x,y,new int[4]);
texData[x+y*256]=pixel[2]+(pixel[1]<<8)+(pixel[0]<<16)+(pixel[3]<<24);
}
}
} catch (IOException e1) {
System.out.println("Could not load game textures! (textures_256.png not found)");
}
frame = new JFrame("SigKeeper");
panel = new Panel();
@ -59,6 +79,8 @@ public class SigKeeper implements WindowFocusListener,KeyListener,MouseListener,
new Vertex((float)Math.random()*SCREEN_WIDTH,(float)Math.random()*SCREEN_HEIGHT,(float)Math.random()*100),
new Vertex((float)Math.random()*SCREEN_WIDTH,(float)Math.random()*SCREEN_HEIGHT,(float)Math.random()*100)));
}
/*tris.add(new Triangle(new Vertex(50,300,100),new Vertex(300,300,100),new Vertex(50,100,100)));
tris.add(new Triangle(new Vertex(300,300,100),new Vertex(300,100,100),new Vertex(50,100,100)));*/
for (int i=0;i<SigKeeper.tris.size();i++) {
Triangle t = SigKeeper.tris.get(i);
Panel.triPoints[i*12+0]=t.A.x;

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textures_256.png
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