A complete 3D game development suite written purely in Java.
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jmonkeyengine/jme3-examples/src/main/java/jme3test/material/TestShaderNodesApi.java

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package jme3test.material;
import com.jme3.app.SimpleApplication;
import com.jme3.material.Material;
import com.jme3.material.Technique;
import com.jme3.material.TechniqueDef;
import com.jme3.math.*;
import com.jme3.scene.Geometry;
import com.jme3.scene.VertexBuffer;
import com.jme3.scene.shape.Box;
import com.jme3.shader.*;
import com.jme3.shader.builder.MaterialBuilder;
import com.jme3.texture.Texture;
import java.util.logging.Level;
import java.util.logging.Logger;
public class TestShaderNodesApi extends SimpleApplication {
public static void main(String[] args) {
TestShaderNodesApi app = new TestShaderNodesApi();
app.start();
}
@Override
public void simpleInitApp() {
flyCam.setMoveSpeed(20);
Logger.getLogger("com.jme3").setLevel(Level.WARNING);
Box boxshape1 = new Box(1f, 1f, 1f);
Geometry cube = new Geometry("A Box", boxshape1);
Texture tex = assetManager.loadTexture("Interface/Logo/Monkey.jpg");
MaterialBuilder mb = new MaterialBuilder(assetManager);
mb.addMatParam(VarType.Vector4, "Color");
mb.addMatParam(VarType.Texture2D, "Texture");
mb.technique().addNode("CommonVert", "CommonVert", "jme3test/matdefs/CommonVert.vert")
.inputs(
mb.map("worldViewProjectionMatrix", UniformBinding.WorldViewProjectionMatrix),
mb.map("modelPosition", VertexBuffer.Type.Position))
.outputs(
mb.map("result", "Global.position")
);
mb.technique().inlineVertexNode("vec2","TexCoord", "%texIn")
.inputs(
mb.map("texIn", VertexBuffer.Type.TexCoord)
);
mb.technique().addNode("ColorMult", "ColorMult", "jme3test/matdefs/ColorMult.frag")
.inputs(
mb.map("color1", "vec4(0.1, 0.1, 0.1, 1.0)"),
mb.map("color2", "MatParam.Color"))
.outputs(
mb.map("result", "Global.color")
);
mb.technique().inlineFragmentNode("vec4","InlineNode","%color1 * texture2D(%tex, %texCoord)")
.inputs(
mb.map("color1", "ColorMult.result"),
mb.map("tex", "MatParam.Texture"),
mb.map("texCoord", "TexCoord.result")
).outputs(
mb.map("result", "Global.color")
);
Material mat = mb.build();
//Material mat = new Material(assetManager, "jme3test/matdefs/test2.j3md");
mat.selectTechnique(TechniqueDef.DEFAULT_TECHNIQUE_NAME, renderManager);
Technique t = mat.getActiveTechnique();
for (Shader.ShaderSource shaderSource : t.getDef().getShader(assetManager, renderer.getCaps(), t.getDynamicDefines()).getSources()) {
System.out.println(shaderSource.getSource());
}
mat.setColor("Color", ColorRGBA.Yellow);
mat.setTexture("Texture", tex);
cube.setMaterial(mat);
cube.move(0, 0, 0);
rootNode.attachChild(cube);
}
}