protected void readUniformsFromSource(GL2 gl, String source) {
// read the uniforms defined by the shader source
int samplerNumber = 0;
Pattern uniformPattern = Pattern.compile("uniform\\s+(\\w+)\\s+([^;]+);");
Matcher matcher = uniformPattern.matcher(source);
while (matcher.find()) {
String[] names = matcher.group(2).split("\\s*,\\s*");
if (matcher.group(1).equals("sampler2D")) {
// a sampler2D was found; set them to incremental integers (assume that they are defined by
// texture order)
for (String name : names) {
gl.glUniform1i(gl.glGetUniformLocation(shaderProgram, name), samplerNumber++);
}
} else {
for (String name : names) {
// check if we have a setter for this uniform name
IUniformSetter setter = setters.get(name);
if (setter != null) {
int uniformLocation = gl.glGetUniformLocation(shaderProgram, name);
uniforms.put(uniformLocation, setter);
}
}
}
}
}
@Override
public void uniforms() {
GL2 gl = getGL();
// System.out.println("A : kernelSize = " + kernelSize);
gl.glUniform4f(uniform("ScaleFactor"), scaleFactor, scaleFactor, scaleFactor, scaleFactor);
gl.glUniform1i(uniform("KernelSize"), kernelSize);
// System.out.println("B");
gl.glUniform4fv(uniform("KernelValueH[0]"), kernelValueH.length, kernelValueH, 0);
gl.glUniform4fv(uniform("KernelValueV[0]"), kernelValueV.length, kernelValueV, 0);
// System.out.println("C");
gl.glUniform2fv(uniform("Offset[0]"), offsets.length, offsets, 0);
}
public void setTextureUnit(GL2 gl, String texname, int texunit) {
int[] params = new int[] {0};
gl.glGetProgramiv(_progId, GL2.GL_LINK_STATUS, params, 0);
if (params[0] != 1) {
System.err.println("Error: setTextureUnit needs program to be linked.");
}
int id = gl.glGetUniformLocation(_progId, texname);
if (id == -1) {
System.err.println("Warning: Invalid texture " + texname);
return;
}
gl.glUniform1i(id, texunit);
}
public void drawTextureToOffScreenTextureUsingShader(int texId, int attachment, Program program)
// public void drawTextureToOffScreenTextureUsingShader(Texture tex, int attachment, Program
// program)
{
GL2 gl = getGL();
program.bind();
gl.glBindTexture(GL_TEXTURE_2D, texId);
// gl.glBindTexture(GL_TEXTURE_2D, tex.getTextureObject());
gl.glDrawBuffer(attachment);
gl.glEnable(GL_TEXTURE_2D);
// gl.glActiveTexture(GL_TEXTURE0);
gl.glClear(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT);
gl.glViewport(0, 0, fboWidth, fboHeight);
gl.glUniform1i(program.uniform("theTexture"), 0);
// set projection to ortho
gl.glMatrixMode(gl.GL_PROJECTION);
gl.glPushMatrix();
{
gl.glLoadIdentity();
Renderer.getInstance().glu.gluOrtho2D(0, fboWidth, fboHeight, 0);
gl.glMatrixMode(gl.GL_MODELVIEW);
gl.glPushMatrix();
{
gl.glLoadIdentity();
gl.glColor4f(1f, 1f, 1f, 1f);
drawSquare(gl, 0, 0, fboWidth, fboHeight);
}
gl.glPopMatrix();
gl.glMatrixMode(gl.GL_PROJECTION);
}
gl.glPopMatrix();
gl.glMatrixMode(gl.GL_MODELVIEW);
gl.glDisable(GL_TEXTURE_2D);
program.unbind();
}
public void setUniforms(GL2 gl) {
gl.glUniform1i(textureLocation, 0);
}