//-----------------------------------------------------------------------------------------
private bool _InitProgram()
{
int vertexShader = Shader.Load(Program.BasePath + @"Source\Listing_07L04_07L06\grass.vs.glsl",
ShaderType.VertexShader);
int fragmentShader = Shader.Load(Program.BasePath + @"Source\Listing_07L04_07L06\grass.fs.glsl",
ShaderType.FragmentShader);
_shaderProgram = Shader.Link(new int[] { vertexShader, fragmentShader }, 2);
_vao = GL.GenVertexArray();
GL.BindVertexArray(_vao);
_mvpMatrixUniformLoc = GL.GetUniformLocation(_shaderProgram, "mvpMatrix");
GL.ActiveTexture(TextureUnit.Texture1);
KTX.Load(Program.BasePath + @"Media\Textures\grass_length.ktx", ref _textures.grassLength);
GL.ActiveTexture(TextureUnit.Texture2);
KTX.Load(Program.BasePath + @"Media\Textures\grass_orientation.ktx", ref _textures.grassOrientation);
GL.ActiveTexture(TextureUnit.Texture3);
KTX.Load(Program.BasePath + @"Media\Textures\grass_color.ktx", ref _textures.grassColor);
GL.ActiveTexture(TextureUnit.Texture4);
KTX.Load(Program.BasePath + @"Media\Textures\grass_bend.ktx", ref _textures.grassBend);
return(true);
}
public IEnumerable <Color> Load(byte[] tex)
{
if (Width < 0 || Height < 0)
{
throw new InvalidDataException("Height and Width has to be set for ASTC.");
}
CreateTempASTCFile("tmp.astc", tex);
var wrapper = new ASTCContext();
wrapper.Decode("tmp.astc", "tmp.ktx", _blockMode);
File.Delete("tmp.astc");
var ktx = new KTX("tmp.ktx");
var colors = ktx.GetImageColors().Reverse().ToList();
ktx.Dispose();
File.Delete("tmp.ktx");
return(colors);
}