lewkoo

  //set the image size
	int imageWidth = 960;
	int imageHeight = 540; // change these to any integers

  //instanciate a gradient variable
    ofImage gradient = ofImage();
	gradient.allocate(960,540,OF_IMAGE_COLOR);

lewkoo

#include "ofMain.h"
#include "testApp.h"
#include "ofAppGlutWindow.h"

//========================================================================
int main( ){

    ofAppGlutWindow window;
	ofSetupOpenGL(&window, 960, 540, OF_WINDOW);			// <-------- setup the GL context

lewkoo

#pragma once

#include "ofMain.h"

class testApp : public ofBaseApp{
	
	public:
		void setup();
		void update();
		void draw();

lewkoo

#include "testApp.h"

//--------------------------------------------------------------
void testApp::setup(){

	ofSetLogLevel(OF_LOG_VERBOSE);
	ofBackground(34, 34, 34);
	ofSetVerticalSync(false);
	ofEnableAlphaBlending();
		

lewkoo

#version 120

void main(){
	//this is the fragment shader
	//this is where the pixel level drawing happens
	//gl_FragCoord gives us the x and y of the current pixel its drawing
	

	gl_FragColor.r = gl_Color.r + 20;
	gl_FragColor.g = gl_Color.g + 20;

lewkoo

void testApp::draw()
{
  if(doShader)
    shader.begin();
    
  gradient.draw(0,0,960,540);
  
  if(doShader)
    shader.end();

lewkoo

#version 120

void main() {
    vec4 color;
    float xCor = gl_FragCoord.x;
    
    vec4 white = vec4(1);
    vec4 black = vec4(0);

    float x = smoothstep(0, 960.0, xCor);

lewkoo

#include "ofApp.h"

//--------------------------------------------------------------
void ofApp::setup(){
    
    ofSetLogLevel(OF_LOG_VERBOSE);
	ofBackground(34, 34, 34);
	ofSetVerticalSync(false);
	ofEnableAlphaBlending();

lewkoo

#ifndef _TEST_APP
#define _TEST_APP


#include "ofMain.h"
#include "ofxAndroid.h"

class ofApp : public ofxAndroidApp{
	
	public:

lewkoo

#include "ofMain.h"
#include "ofApp.h"

// comment out the line below if you want to use a fixed pipeline opengl renderer,
// otherwise leave this line uncommented if you want to use a programmable pipeline opengl renderer.
#define USE_PROGRAMMABLE_RENDERER

#ifdef USE_PROGRAMMABLE_RENDERER
#include "ofGLProgrammableRenderer.h"
#endif