Constructor Detail

• Program

  public Program​(Context context,
                 String vertexShaderFilePath,
                 String fragmentShaderFilePath)
          throws IOException

  Compiles a GL shader program from vertex and fragment shader GLSL GLES20 code.

  Parameters:

  context - The Context.

  vertexShaderFilePath - The path to a vertex shader program.

  fragmentShaderFilePath - The path to a fragment shader program.

  Throws:

  IOException - When failing to read shader files.

• Program

  public Program​(String vertexShaderGlsl,
                 String fragmentShaderGlsl)

  Creates a GL shader program from vertex and fragment shader GLSL GLES20 code.

  This involves slow steps, like compiling, linking, and switching the GL program, so do not call this in fast rendering loops.

  Parameters:

  vertexShaderGlsl - The vertex shader program.

  fragmentShaderGlsl - The fragment shader program.

Method Detail

• use

  public void use()

  Uses the program.

  Call this in the rendering loop to switch between different programs.

• delete

  public void delete()

  Deletes the program. Deleted programs cannot be used again.

• getAttributeArrayLocationAndEnable

  public int getAttributeArrayLocationAndEnable​(String attributeName)

  Returns the location of an GlUtil.Attribute, which has been enabled as a vertex attribute array.

• getUniformLocation

  public int getUniformLocation​(String uniformName)

  Returns the location of a GlUtil.Uniform.

• setBufferAttribute

  public void setBufferAttribute​(String name,
                                 float[] values,
                                 int size)

  Sets a float buffer type attribute.

• setSamplerTexIdUniform

  public void setSamplerTexIdUniform​(String name,
                                     int texId,
                                     int unit)

  Sets a texture sampler type uniform.

• setFloatUniform

  public void setFloatUniform​(String name,
                              float value)

  Sets a float type uniform.

• setFloatsUniform

  public void setFloatsUniform​(String name,
                               float[] value)

  Sets a float array type uniform.

• bindAttributesAndUniforms

  public void bindAttributesAndUniforms()

  Binds all attributes and uniforms in the program.