[Java-game-lib-cvs] CVS: LWJGL/src/java/org/lwjgl/test/opengl Grass.java,NONE,1.1 cg_grass2.cg,NONE,

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Update of /cvsroot/java-game-lib/LWJGL/src/java/org/lwjgl/test/opengl
In directory sc8-pr-cvs1:/tmp/cvs-serv6033

Added Files:
	Grass.java cg_grass2.cg cg_grass2.vp 
Log Message:
Added shader demo Grass.java

--- NEW FILE: Grass.java ---
CVS Browser:
http://cvs.sourceforge.net/cgi-bin/viewcvs.cgi/java-game-lib/LWJGL/src/java/org/lwjgl/test/opengl/Grass.java
import org.lwjgl.input.*;
import org.lwjgl.opengl.*;
import org.lwjgl.*;

import java.net.*;
import java.io.*;
import java.nio.*;
import java.util.*;

	class Aslod {	
		float angle;
		float value;
		float ripple;
		float count;
	}

public class Grass {

        private static boolean finished = false;
        private static Random rand = new Random();

	static {
		try {
			DisplayMode[] modes = Display.getAvailableDisplayModes();
			System.out.println("Available display modes:");
			for (int i = 0; i < modes.length; i ++)
				System.out.println(modes[i]);
			// For now let's just pick a mode we're certain to have
			Display.create(new DisplayMode(800, 600, 16, 60), false);
			System.out.println("Created display.");
		} catch (Exception e) {
			System.err.println("Failed to create display due to "+e);
			System.exit(1);
		}
	}

	public static final GL gl = new GL(16, 0, 16, 8);
	public static final GLU glu = new GLU(gl);
	static {
		try {
			gl.create();
                        Keyboard.create();
                        Keyboard.enableBuffer();
                        Mouse.create();
			System.out.println("Created OpenGL.");
		} catch (Exception e) {
			System.err.println("Failed to create OpenGL due to "+e);
			System.exit(1);
		}

	}

        private static Aslod aslod = new Aslod();

        private static int mesh;
        private static int program_handle;

	private static byte[] loadFile(String file) {
		int next;
		java.util.Vector bytes = new java.util.Vector();
		try {
                        ClassLoader loader = ClassLoader.getSystemClassLoader();
                        URL url = loader.getResource(file);
			InputStream stream = new BufferedInputStream(url.openStream());
			while ((next = (stream.read())) != -1)
				bytes.add(new Byte((byte)next));
			stream.close();
			byte[] result = new byte[bytes.size()];
			for (int i = 0; i < result.length; i++)
				result[i] = ((Byte)bytes.get(i)).byteValue();
			return result;
		} catch (Exception e) {
			e.printStackTrace();
		}
		return null;
	}


        public static void main(String[] args) {
                
		ByteBuffer byte_buf = ByteBuffer.allocateDirect(4);
                byte_buf.order(ByteOrder.nativeOrder());
                System.out.println("Vertex program supported: " + gl.NV_vertex_program);
	        gl.genProgramsNV(1, Sys.getDirectBufferAddress(byte_buf));
                IntBuffer int_buf = byte_buf.asIntBuffer();
        	if (int_buf.get(0) == 0)
	        	throw new RuntimeException("Could not allocate new vertex program id!");

                program_handle = int_buf.get(0);
		byte[] program = loadFile("cg_grass2.vp");
                ByteBuffer program_buf = ByteBuffer.allocateDirect(program.length);
                program_buf.order(ByteOrder.nativeOrder());
                program_buf.rewind();
                program_buf.put(program);
                program_buf.rewind();
		gl.loadProgramNV(GL.VERTEX_PROGRAM_NV, program_handle, program_buf.remaining(), Sys.getDirectBufferAddress(program_buf));
		/*gl.getIntegerv(GL.PROGRAM_ERROR_POSITION_NV, Sys.getDirectBufferAddress(int_buf));
		System.out.println("error position: " + int_buf.get(0));*/

		genMesh();

		float[] LightDiffuse = {1.0f, 0.0f, 0.0f, 1.0f};
		float[] LightPosition = {1.0f, 1.0f, 1.0f, 0.0f};
                ByteBuffer light_buf = ByteBuffer.allocateDirect(4*4);
                light_buf.order(ByteOrder.nativeOrder());
                FloatBuffer light_buf_f = light_buf.asFloatBuffer();
                light_buf_f.rewind();
                light_buf_f.put(LightDiffuse);

		gl.lightfv(GL.LIGHT0, GL.DIFFUSE, Sys.getDirectBufferAddress(light_buf_f));
                light_buf_f.rewind();
                light_buf_f.put(LightPosition);
		gl.lightfv(GL.LIGHT0, GL.POSITION, Sys.getDirectBufferAddress(light_buf_f));
		gl.enable(GL.LIGHT0);

		gl.enable(GL.LIGHTING);

		gl.enable(GL.DEPTH_TEST);

		gl.blendFunc(GL.SRC_ALPHA, GL.ONE_MINUS_SRC_ALPHA);
		gl.enable(GL.BLEND);

		gl.matrixMode(GL.PROJECTION);
		glu.perspective(40.0, 1.0, 1.0, 50.0);

		gl.matrixMode(GL.MODELVIEW);

		glu.lookAt(14.0, 10.0, -16.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0);

		aslod.angle = 2.6179935f;
		aslod.value = 0.2f;
		aslod.ripple = 0.0f;
		aslod.count = 0.0f;

		while (!finished) {
                        keyPoll();
			float degree = (1.0f + (aslod.value * 20.0f)) * 0.01745329f;

			degree *= (0.5 + myrand()) ;

			ptrAnimate(degree);
			gl.clear(GL.COLOR_BUFFER_BIT | GL.DEPTH_BUFFER_BIT);

			//ptrDraw();

			grsDraw();

			gl.swapBuffers();
		}
                Mouse.destroy();
                Keyboard.destroy();
                gl.destroy();
                Display.destroy();
        }

	private static float myrand() {
		// returns a value between 0 and 1
		return rand.nextFloat(); 
	}

	private static void genGrass( float fFaceHeight, float fFaceWidth, float fX, float fZ ) {
		int cFaces;
		int numFaces;
		float cWidth;
		float fDecWidth, frndWidth, frndHeight;
		float fRotate;
		float fRigid;

		numFaces = 5;
		frndHeight = fFaceHeight + ((fFaceHeight / 1.5f) * (float)java.lang.Math.cos(java.lang.Math.abs(rand.nextInt())));
		frndWidth = fFaceWidth + ((fFaceWidth / 4.0f) * (float)java.lang.Math.cos(java.lang.Math.abs(rand.nextInt())));

		fDecWidth = frndWidth / 5.0f;

		fRotate = myrand() * 3.1415f;

		fRigid = ((fRigid = myrand()) < 0.2f) ? 0.2f : fRigid;

		if (myrand() < 0.3)
			gl.begin(GL.LINE_STRIP);

		else
			gl.begin(GL.QUAD_STRIP);

		for (cFaces = 0; cFaces < numFaces; cFaces++)
		{
			for (cWidth = frndWidth; cWidth >=-frndWidth; cWidth-=(frndWidth * 2.0f))
			{
				gl.color4f(fX, fRigid, fZ, (float)cFaces/(float)numFaces);

				gl.vertex3f((float)(((cFaces-2)*0.1f)*java.lang.Math.cos(fRotate)+(cWidth)*java.lang.Math.sin(fRotate)), cFaces*frndHeight, 
						-(float)(((cFaces-2)*0.1f)*java.lang.Math.sin(fRotate) + (cWidth)*java.lang.Math.cos(fRotate)));
			}

			frndWidth -= fDecWidth;
		}

		gl.end();

	}

	private static void genMesh() {
		float cI, cJ, fArea;

		fArea = 20.0f;
                mesh = gl.genLists(1);
		gl.newList(mesh, GL.COMPILE);

		for (cI = -fArea/2; cI < fArea/2; cI+=0.25f)
		{
			for (cJ = -fArea/2; cJ < fArea/2; cJ+=0.25f)
			{
				genGrass(0.5f, 0.1f, cI, cJ);
			}
		}

		gl.endList();

	}

	private static void grsDraw()
	{
		gl.enable(GL.VERTEX_PROGRAM_NV);
		gl.bindProgramNV(GL.VERTEX_PROGRAM_NV, program_handle);
		gl.trackMatrixNV(GL.VERTEX_PROGRAM_NV, 0, GL.MODELVIEW_PROJECTION_NV, GL.IDENTITY_NV);

		gl.programParameter4fNV( GL.VERTEX_PROGRAM_NV, 4, 0.0f, 0.0f, 0.0f, 0.0f);
		gl.programParameter4fNV( GL.VERTEX_PROGRAM_NV, 5, 0.0f, 0.0f, 0.0f, 0.0f);
		gl.programParameter4fNV( GL.VERTEX_PROGRAM_NV, 6, 1.763609f, 0.496495f, 0.0f, 0.0f);
		gl.programParameter4fNV( GL.VERTEX_PROGRAM_NV, 7, -0.943599f, 3.203737f, 0.0f, 0.0f);
		gl.programParameter4fNV( GL.VERTEX_PROGRAM_NV, 8, 4.101107f, 0.943413f, 0.0f, 0.0f);  
		gl.programParameter4fNV( GL.VERTEX_PROGRAM_NV, 9, -1.218603f, 6.259399f, 0.0f, 0.0f);  
		gl.programParameter4fNV( GL.VERTEX_PROGRAM_NV, 10, 7.214299f, 1.352961f, 0.0f, 0.0f);
		gl.programParameter4fNV( GL.VERTEX_PROGRAM_NV, 11, -1.540748f, 10.080958f, 0.0f, 0.0f);
		gl.programParameter4fNV( GL.VERTEX_PROGRAM_NV, 12, 10.880035f, 1.759046f, 0.0f, 0.0f);
		gl.programParameter4fNV( GL.VERTEX_PROGRAM_NV, 13, -1.852705f, 14.468674f, 0.0f, 0.0f);
		gl.programParameter4fNV( GL.VERTEX_PROGRAM_NV, 14, 14.292879f, 1.973329f, 0.0f, 0.0f);
		gl.programParameter4fNV( GL.VERTEX_PROGRAM_NV, 15, -1.973387f, 18.506531f, 0.0f, 0.0f);
		gl.programParameter4fNV( GL.VERTEX_PROGRAM_NV, 16, (float)(java.lang.Math.sin(aslod.angle) * (aslod.value + aslod.ripple)), 0.0f, (float)(java.lang.Math.cos(aslod.angle) * (aslod.value + aslod.ripple)), 0.0f);

                gl.programParameter4fNV( GL.VERTEX_PROGRAM_NV, 17, 1.7f, 5f, 2f, 0f);
                gl.programParameter4fNV( GL.VERTEX_PROGRAM_NV, 18, -0.0187293f, 0.074261f, 0.2121144f, 1.570729f);
                gl.programParameter4fNV( GL.VERTEX_PROGRAM_NV, 20, 0f, 0.5f, 1f, 0f);
                gl.programParameter4fNV( GL.VERTEX_PROGRAM_NV, 21, 0.25f, -9f, 0.75f, 0.1591549f);
                gl.programParameter4fNV( GL.VERTEX_PROGRAM_NV, 22, 24.9808f, -24.9808f, -60.14581f, 60.14581f);
                gl.programParameter4fNV( GL.VERTEX_PROGRAM_NV, 23, 85.45379f, -85.45379f, -64.93935f, 64.93935f);
                gl.programParameter4fNV( GL.VERTEX_PROGRAM_NV, 24, 19.73921f, -19.73921f, -1f, 1f);
                gl.programParameter4fNV( GL.VERTEX_PROGRAM_NV, 25, 0f, 4f, 0f, 0f);
                gl.programParameter4fNV( GL.VERTEX_PROGRAM_NV, 19, 1f, 3.141593f, 0.5f, 1f);
                gl.programParameter4fNV( GL.VERTEX_PROGRAM_NV, 26, 0.7f, 0.4f, 0f, 0f);
		gl.callList(mesh);
		gl.disable(GL.VERTEX_PROGRAM_NV);

	}

/*	private static void ptrDraw()
	{
		glRotatef((aslod.angle * 180.0f) / 3.1415f, 0, 1, 0);
		glTranslatef(0, 4.5, -7.5);
		glRotatef(-90, 0, 1, 0);
		glRotatef(-45, 0, 0, 1);

		glMaterialfv(GL.FRONT, GL.AMBIENT, vec4f(.1f,.1f,0,1).v);
		glMaterialfv(GL.FRONT, GL.DIFFUSE, vec4f(.6f,.6f,.1f,1).v);
		glMaterialfv(GL.FRONT, GL.SPECULAR, vec4f(1,1,.75f,1).v);
		glMaterialf(GL.FRONT, GL.SHININESS, 128.f);

		glutSolidTeapot(aslod.value*5);

		gl.rotatef(45, 0, 0, 1);
		gl.totatef(90, 0, 1, 0);
		gl.translatef(0, -4.5, 7.5);
		gl.rotatef(-(aslod.angle * 180.0f) / 3.1415f, 0f, 1f, 0f);

	}
*/
	private static void ptrAnimate(float degree)
	{
		aslod.count += degree;

		aslod.ripple = (float)(java.lang.Math.cos(aslod.count) / 80.0);

	}

	private static void keyPoll() {
		Keyboard.read();
		for (int i = 0; i < Keyboard.getNumKeyboardEvents(); i++) {
			Keyboard.next();
			if (!Keyboard.state)
				continue;
			switch(Keyboard.key)
			{
				case Keyboard.KEY_A:

					aslod.angle += 0.1;
					break;

				case Keyboard.KEY_D:

					aslod.angle -= 0.1;
					break;

				case Keyboard.KEY_W:

					aslod.value += (aslod.value >= 0.15) ? 0.0 : 0.0025;
					break;

				case Keyboard.KEY_S:

					aslod.value -= (aslod.value <= 0.005) ? 0.0 : 0.0025;
					break;
				case Keyboard.KEY_ESCAPE:
					finished = true;
					break;
			}
		}
	}

}


--- NEW FILE: cg_grass2.cg ---
CVS Browser:
http://cvs.sourceforge.net/cgi-bin/viewcvs.cgi/java-game-lib/LWJGL/src/java/org/lwjgl/test/opengl/cg_grass2.cg
#pragma bind app2vert.position = ATTR0
#pragma bind app2vert.normal = ATTR2
#pragma bind app2vert.color = ATTR3


struct app2vert : application2vertex
{
  float4 position; //in object space
  float3 normal; //in object space
  float4 color;
};

#pragma bind vert2frag.HPOS = HPOS
#pragma bind vert2frag.COL0 = COL0

struct vert2frag : vertex2fragment 
{
  float4 HPOS;
  float4 COL0;
};

vert2frag main(app2vert IN,
               uniform float4x4 ModelViewProj,
               uniform float4 Stiff[12],
               uniform float4 Load)
{
	vert2frag OUT;
	float4 position;
	float3 normal;
	float3 disloc;
    float4 dif;
    float index;
    float teta;
	float alpha;

	alpha = IN.position.y / 1.7;

	// matrix line index
    index = IN.color.a * 5 * 2;

	// straw stiffness (randomic)
	Load = Load * IN.color.y;

    disloc.x = IN.position.x + dot(Stiff[index].xy, Load.xz);
    disloc.y = IN.position.y;
    disloc.z = IN.position.z + dot(Stiff[index + 1].xy, Load.xz);

	// find the normal
    teta = acos(IN.position.y / length(disloc));

    normal = IN.position.xyz - disloc.xyz;
    normal.y = sin(teta) * length(disloc);
    normal = normalize(normal);

    position.x = disloc.x + IN.color.x;
    position.y = disloc.y;
    position.z = disloc.z + IN.color.z;
    position.w = 1;

    OUT.HPOS = mul(ModelViewProj, position);

	// calculate diffuse lighting off the normal that was just calculated
    float4 lightPos = float4(0,4,0,0);
    float4 lightVec = normalize(lightPos - position);
    float diffuseInten = dot(lightVec.xyz, normal);

	diffuseInten = (diffuseInten < 0.5) ? 0.5 : diffuseInten;

    OUT.COL0 = float4(IN.color.y * 0.7, 0.7, 0.4, alpha) * diffuseInten;

    return OUT;
}

--- NEW FILE: cg_grass2.vp ---
CVS Browser:
http://cvs.sourceforge.net/cgi-bin/viewcvs.cgi/java-game-lib/LWJGL/src/java/org/lwjgl/test/opengl/cg_grass2.vp
!!VP1.0
# NV_vertex_program generated by NVIDIA Cg compiler
# cgc version 1.5.0001, build date Sep 12 2002  15:49:58
# command line args: -profile vp20 cg_grass2.cg
# nv30vp backend compiling 'main' program
#vendor NVIDIA Corporation
#version 1.0.1
#profile vp20
#program main
#semantic main.ModelViewProj
#semantic main.Stiff
#semantic main.Load
#var float4 IN.position : $vin.ATTR0 : ATTR0 : 0 : 1
#var float3 IN.normal : $vin.ATTR2 : ATTR2 : 0 : 1
#var float4 IN.color : $vin.ATTR3 : ATTR3 : 0 : 1
#var float4x4 ModelViewProj :  : c[0], 4 : 1 : 1
#var float4 Stiff[0] :  : c[4] : 2 : 1
#var float4 Stiff[1] :  : c[5] : 2 : 1
#var float4 Stiff[2] :  : c[6] : 2 : 1
#var float4 Stiff[3] :  : c[7] : 2 : 1
#var float4 Stiff[4] :  : c[8] : 2 : 1
#var float4 Stiff[5] :  : c[9] : 2 : 1
#var float4 Stiff[6] :  : c[10] : 2 : 1
#var float4 Stiff[7] :  : c[11] : 2 : 1
#var float4 Stiff[8] :  : c[12] : 2 : 1
#var float4 Stiff[9] :  : c[13] : 2 : 1
#var float4 Stiff[10] :  : c[14] : 2 : 1
#var float4 Stiff[11] :  : c[15] : 2 : 1
#var float4 Load :  : c[16] : 3 : 1
#var float4 HPOS : $vout.HPOS : HPOS : -1 : 1
#var float4 COL0 : $vout.COL0 : COL0 : -1 : 1
#const c[17] = 1.7 5 2 0
#const c[18] = -0.0187293 0.074261 0.2121144 1.570729
#const c[20] = 0 0.5 1 0
#const c[21] = 0.25 -9 0.75 0.1591549
#const c[22] = 24.9808 -24.9808 -60.14581 60.14581
#const c[23] = 85.45379 -85.45379 -64.93935 64.93935
#const c[24] = 19.73921 -19.73921 -1 1
#const c[25] = 0 4 0 0
#const c[19] = 1 3.141593 0.5 1
#const c[26] = 0.7 0.4 0 0
	MUL R2, c[16], v[3].y;
	MUL R0, v[3].w, c[17].y;
	MUL R1, R0.x, c[17].z;
	ARL A0.x, R1.x;
	MUL R0, c[A0.x + 4].xyxx, R2.xzxx;
	ADD R0, R0.x, R0.y;
	ADD R3.x, v[0].x, R0.x;
	MOV R3.y, v[0].y;
	MUL R0, c[A0.x + 5].xyxx, R2.xzxx;
	ADD R0, R0.x, R0.y;
	ADD R3.z, v[0].z, R0.x;
	ADD R2.x, R3.x, v[3].x;
	MOV R2.y, R3.y;
	ADD R2.z, R3.z, v[3].z;
	MOV R2.w, c[19].x;
	DP4 R0.x, c[0], R2;
	DP4 R0.y, c[1], R2;
	DP4 R0.z, c[2], R2;
	DP4 R0.w, c[3], R2;
	MOV o[HPOS], R0;
	ADD R1.xz, v[0].xyzx, -R3.xyzx;
	DP3 R0, R3.xyzx, R3.xyzx;
	RSQ R0, R0.x;
	RCP R0, R0.x;
	RCP R3, R0.x;
	MUL R6, v[0].y, R3.x;
	MAX R5, R6.x, -R6.x;
	MAD R3, c[18].x, R5.x, c[18].y;
	MAD R3, R3.x, R5.x, -c[18].z;
	MAD R4, R3.x, R5.x, c[18].w;
	ADD R3, c[19].x, -R5.x;
	RSQ R3, R3.x;
	RCP R3, R3.x;
	MUL R5, R4.x, R3.x;
	SLT R4, R6.x, c[17].w;
	MUL R3, c[17].z, R4.x;
	MUL R3, R3.x, R5.x;
	ADD R3, R5.x, -R3.x;
	MAD R3, R4.x, c[19].y, R3.x;
	MAD R6, c[21].w, R3.x, -c[21].x;
	EXP R6.y, R6.x;
	ADD R3, c[20].xyzx, -R6.yyyy;
	MUL R5, R3.xyzx, R3.xyzx;
	SLT R4.x, R6.y, c[21].x;
	SGE R3, R6.yyyy, c[21].yzyy;
	MOV R4.yz, R3.xxyw;
	DP3 R4.y, R4.xyzx, c[24].zwzz;
	MAD R3, c[22].xyxx, R5.xyzx, c[22].zwzz;
	MAD R3, R3.xyzx, R5.xyzx, c[23].xyxx;
	MAD R3, R3.xyzx, R5.xyzx, c[23].zwzz;
	MAD R3, R3.xyzx, R5.xyzx, c[24].xyxx;
	MAD R3, R3.xyzx, R5.xyzx, c[24].zwzz;
	DP3 R5.x, R3.xyzx, -R4.xyzx;
	MUL R1.y, R5.x, R0.x;
	DP3 R0, R1.xyzx, R1.xyzx;
	RSQ R0, R0.x;
	MUL R3, R0.x, R1.xyzx;
	ADD R1, c[25], -R2;
	DP4 R0, R1, R1;
	RSQ R0, R0.x;
	MUL R0, R0.x, R1;
	DP3 R2, R0.xyzx, R3.xyzx;
	SLT R1, R2.x, c[19].z;
	ADD R0, c[19].w, -R1.x;
	MUL R0, R0.x, R2.x;
	MAD R2, R1.x, c[19].z, R0.x;
	MUL R1.x, v[3].y, c[26].x;
	MOV R1.y, c[26].x;
	MOV R1.z, c[26].y;
	RCP R0, c[17].x;
	MUL R1.w, v[0].y, R0.x;
	MUL o[COL0], R1, R2.x;
END
# 72 instructions
# End of program

[Java-game-lib-cvs] CVS: LWJGL/src/java/org/lwjgl/test/opengl Grass.java,NONE,1.1 cg_grass2.cg,NONE,

[Java-game-lib-cvs] CVS: LWJGL/src/java/org/lwjgl/test/opengl Grass.java,NONE,1.1 cg_grass2.cg,NONE,1.1 cg_grass2.vp,NONE,1.1