org.oscim.renderer

Class GLUtils

java.lang.Object

org.oscim.renderer.GLUtils

public class GLUtils
extends java.lang.Object

Utility functions

Constructor Summary

Constructors

Constructor and Description
GLUtils()

Method Summary

Modifier and Type	Method and Description
static void	changeSaturation(float[] color, float change) public-domain function by Darel Rex Finley from http://alienryderflex.com/saturation.html
static void	checkGlError(java.lang.String op)
static boolean	checkGlOutOfMemory(java.lang.String op)
static float[]	colorToFloat(int color)
static float[]	colorToFloatP(int color)
static void	glDeleteBuffers(int num, int[] ids)
static void	glDeleteTextures(int num, int[] ids)
static int[]	glGenBuffers(int num)
static int[]	glGenTextures(int num)
static void	glUniform4fv(int location, int count, float[] val)
static int	loadTexture(byte[] pixel, int width, int height, int format, int min_filter, int mag_filter, int wrap_s, int wrap_t)
static void	setColor(int handle, float[] c, float alpha)
static void	setColor(int location, int color, float alpha)
static void	setColorBlend(int location, int color1, int color2, float mix)
static void	setTextureParameter(int min_filter, int mag_filter, int wrap_s, int wrap_t)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

GLUtils

public GLUtils()

Method Detail

setColor

public static void setColor(int location,
                            int color,
                            float alpha)

setColorBlend

public static void setColorBlend(int location,
                                 int color1,
                                 int color2,
                                 float mix)

setTextureParameter

public static void setTextureParameter(int min_filter,
                                       int mag_filter,
                                       int wrap_s,
                                       int wrap_t)

loadTexture

public static int loadTexture(byte[] pixel,
                              int width,
                              int height,
                              int format,
                              int min_filter,
                              int mag_filter,
                              int wrap_s,
                              int wrap_t)

checkGlError

public static void checkGlError(java.lang.String op)

checkGlOutOfMemory

public static boolean checkGlOutOfMemory(java.lang.String op)

setColor

public static void setColor(int handle,
                            float[] c,
                            float alpha)

colorToFloat

public static float[] colorToFloat(int color)

colorToFloatP

public static float[] colorToFloatP(int color)

changeSaturation

public static void changeSaturation(float[] color,
                                    float change)

public-domain function by Darel Rex Finley from http://alienryderflex.com/saturation.html

Parameters:

color - The passed-in RGB values can be on any desired scale, such as 0 to 1, or 0 to 255.

change - 0.0 creates a black-and-white image. 0.5 reduces the color saturation by half. 1.0 causes no change. 2.0 doubles the color saturation.

glUniform4fv

public static void glUniform4fv(int location,
                                int count,
                                float[] val)

glGenBuffers

public static int[] glGenBuffers(int num)

glDeleteBuffers

public static void glDeleteBuffers(int num,
                                   int[] ids)

glGenTextures

public static int[] glGenTextures(int num)

glDeleteTextures

public static void glDeleteTextures(int num,
                                    int[] ids)