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package com.jogamp.graph.curve.opengl;
import javax.media.opengl.GL2ES2;
import javax.media.opengl.GLUniformData;
import javax.media.opengl.fixedfunc.GLMatrixFunc;
import jogamp.opengl.Debug;
import com.jogamp.graph.geom.Vertex;
import com.jogamp.graph.geom.opengl.SVertex;
import com.jogamp.opengl.util.PMVMatrix;
import com.jogamp.opengl.util.glsl.ShaderState;
public abstract class Renderer {
protected static final boolean DEBUG = Debug.debug("CurveRenderer");
protected abstract boolean initImpl(GL2ES2 gl);
protected abstract void disposeImpl(GL2ES2 gl);
/**
* Flushes all cached data
*/
public abstract void flushCache();
public abstract float getAlpha();
public abstract void setAlpha(GL2ES2 gl, float alpha_t);
public abstract void setColor(GL2ES2 gl, float r, float g, float b);
protected final Vertex.Factory<? extends Vertex> pointFactory;
protected ShaderState st = new ShaderState();
protected PMVMatrix pmvMatrix = new PMVMatrix();
protected GLUniformData mgl_PMVMatrix;
protected int renderType;
protected int vp_width = 0;
protected int vp_height = 0;
private boolean vboSupported = false;
private boolean initialized = false;
/**
*
* @param factory
* @param renderType either {@link com.jogamp.graph.curve.Region#SINGLE_PASS} or {@link com.jogamp.graph.curve.Region#TWO_PASS}
*/
protected Renderer(Vertex.Factory<? extends Vertex> factory, int renderType) {
this.renderType = renderType;
this.pointFactory = (null != factory) ? factory : SVertex.factory();
}
public Vertex.Factory<? extends Vertex> getFactory() { return pointFactory; }
public final boolean isInitialized() { return initialized; }
public final boolean isVBOSupported() { return vboSupported; }
public final int getRenderType() { return renderType; }
public final int getWidth() { return vp_width; }
public final int getHeight() { return vp_height; }
/**
* Initialize shaders and bindings for GPU based rendering.
* Leaves the renderer enabled, ie ShaderState on.
*
* @param gl the current GL state
* @return true if succeeded, false otherwise
*/
public boolean init(GL2ES2 gl) {
if(initialized){
if(DEBUG) {
System.err.println("TextRenderer: Already initialized!");
}
return true;
}
vboSupported = gl.isFunctionAvailable("glGenBuffers") &&
gl.isFunctionAvailable("glBindBuffer") &&
gl.isFunctionAvailable("glBufferData") &&
gl.isFunctionAvailable("glDrawElements") &&
gl.isFunctionAvailable("glVertexAttribPointer") &&
gl.isFunctionAvailable("glDeleteBuffers");
if(DEBUG) {
System.err.println("TextRendererImpl01: VBO Supported = " + isVBOSupported());
}
initialized = initImpl(gl);
return initialized;
}
public void dispose(GL2ES2 gl) {
if(!initialized){
if(DEBUG) {
System.err.println("TextRenderer: Not initialized!");
}
return;
}
disposeImpl(gl);
st.destroy(gl);
flushCache();
initialized = false;
}
public final ShaderState getShaderState() { return st; }
public final void enable(GL2ES2 gl, boolean enable) {
st.glUseProgram(gl, enable);
}
public final PMVMatrix getMatrix() { return pmvMatrix; }
public void rotate(GL2ES2 gl, float angle, float x, float y, float z) {
pmvMatrix.glRotatef(angle, x, y, z);
if(initialized && null != gl && st.inUse()) {
st.glUniform(gl, mgl_PMVMatrix);
}
}
public void translate(GL2ES2 gl, float x, float y, float z) {
pmvMatrix.glTranslatef(x, y, z);
if(initialized && null != gl && st.inUse()) {
st.glUniform(gl, mgl_PMVMatrix);
}
}
public void resetModelview(GL2ES2 gl) {
pmvMatrix.glMatrixMode(GLMatrixFunc.GL_MODELVIEW);
pmvMatrix.glLoadIdentity();
if(initialized && null != gl && st.inUse()) {
st.glUniform(gl, mgl_PMVMatrix);
}
}
public void updateMatrix(GL2ES2 gl) {
if(initialized && null != gl && st.inUse()) {
st.glUniform(gl, mgl_PMVMatrix);
}
}
public boolean reshapePerspective(GL2ES2 gl, float angle, int width, int height, float near, float far) {
this.vp_width = width;
this.vp_height = height;
float ratio = (float)width/(float)height;
pmvMatrix.glMatrixMode(GLMatrixFunc.GL_PROJECTION);
pmvMatrix.glLoadIdentity();
pmvMatrix.gluPerspective(angle, ratio, near, far);
if(initialized && null != gl) {
st.glUniform(gl, mgl_PMVMatrix);
}
return true;
}
public boolean reshapeOrtho(GL2ES2 gl, int width, int height, float near, float far) {
this.vp_width = width;
this.vp_height = height;
pmvMatrix.glMatrixMode(GLMatrixFunc.GL_PROJECTION);
pmvMatrix.glLoadIdentity();
pmvMatrix.glOrthof(0, width, 0, height, near, far);
if(initialized && null != gl) {
st.glUniform(gl, mgl_PMVMatrix);
}
return true;
}
}
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