Class GlUtil

IDENTITY_MATRIX

public static final float IDENTITY_MATRIX

createProgram( String vertexSource, String fragmentSource )

Creates a new program from the supplied vertex and fragment shaders.

public static int createProgram(String vertexSource,String fragmentSource)

Method Parameters

vertexSource

fragmentSource

loadShader( int shaderType, String source )

Compiles the provided shader source.

public static int loadShader(int shaderType,String source)

Method Parameters

shaderType

source

checkGlError( String op )

Checks to see if a GLES error has been raised.

public static void checkGlError(String op)

Method Parameters

op

checkLocation( int location, String label )

Checks to see if the location we obtained is valid. GLES returns -1 if a label could not be found, but does not set the GL error.

Throws a RuntimeException if the location is invalid.

public static void checkLocation(int location,String label)

Method Parameters

location

label

createImageTexture( ByteBuffer data, int width, int height, int format )

Creates a texture from raw data.

public static int createImageTexture(ByteBuffer data,int width,int height,int format)

Method Parameters

data

Image data, in a "direct" ByteBuffer.

width

Texture width, in pixels (not bytes).

height

Texture height, in pixels.

format

Image data format (use constant appropriate for glTexImage2D(), e.g. GL_RGBA).

createFloatBuffer( float[] coords )

Allocates a direct float buffer, and populates it with the float array data.

public static java.nio.FloatBuffer createFloatBuffer(float[] coords)

Method Parameters

coords

logVersionInfo()

Writes GL version info to the log.

public static void logVersionInfo()