private SceneObject CreateSkyBoxObject()
{
if (!Gl.CurrentExtensions.TextureCubeMap_ARB)
{
return(null);
}
SceneObjectGeometry skyboxObject = new SceneObjectGeometry();
#region Texture
OpenGL.Objects.Image[] cubeMap = new OpenGL.Objects.Image[6];
using (Stream imageStream = Assembly.GetExecutingAssembly().GetManifestResourceStream("HelloObjects.Data.PiazzaDelPopolo.posx.jpg"))
cubeMap[0] = ImageCodec.Instance.Load(imageStream, ImageFormat.Jpeg);
using (Stream imageStream = Assembly.GetExecutingAssembly().GetManifestResourceStream("HelloObjects.Data.PiazzaDelPopolo.negx.jpg"))
cubeMap[1] = ImageCodec.Instance.Load(imageStream, ImageFormat.Jpeg);
using (Stream imageStream = Assembly.GetExecutingAssembly().GetManifestResourceStream("HelloObjects.Data.PiazzaDelPopolo.posy.jpg"))
cubeMap[2] = ImageCodec.Instance.Load(imageStream, ImageFormat.Jpeg);
using (Stream imageStream = Assembly.GetExecutingAssembly().GetManifestResourceStream("HelloObjects.Data.PiazzaDelPopolo.negy.jpg"))
cubeMap[3] = ImageCodec.Instance.Load(imageStream, ImageFormat.Jpeg);
using (Stream imageStream = Assembly.GetExecutingAssembly().GetManifestResourceStream("HelloObjects.Data.PiazzaDelPopolo.posz.jpg"))
cubeMap[4] = ImageCodec.Instance.Load(imageStream, ImageFormat.Jpeg);
using (Stream imageStream = Assembly.GetExecutingAssembly().GetManifestResourceStream("HelloObjects.Data.PiazzaDelPopolo.negz.jpg"))
cubeMap[5] = ImageCodec.Instance.Load(imageStream, ImageFormat.Jpeg);
foreach (OpenGL.Objects.Image image in cubeMap)
{
image.FlipVertically();
}
TextureCube cubeMapTexture = new TextureCube();
cubeMapTexture.Create(PixelLayout.RGB24, cubeMap);
#endregion
#region State
skyboxObject.LocalModel.Scale(170.0f);
skyboxObject.ObjectState.DefineState(new DepthTestState(DepthFunction.Less));
skyboxObject.ObjectState.DefineState(new CullFaceState(FrontFaceDirection.Cw, CullFaceMode.Back));
ShaderUniformState skyboxUniformState = new ShaderUniformState("OpenGL.Skybox");
skyboxUniformState.SetUniformState("glo_CubeMapTexture", cubeMapTexture);
skyboxObject.ObjectState.DefineState(skyboxUniformState);
#endregion
#region Program
skyboxObject.ProgramTag = ShadersLibrary.Instance.CreateProgramTag("OpenGL.Skybox");
skyboxObject.Program.Create(_Context);
#endregion
#region Vertex Array
// Define vertex arrays
skyboxObject.VertexArray = new VertexArrayObject();
skyboxObject.VertexArray.SetArray(_CubeArrayPosition, VertexArraySemantic.Position);
skyboxObject.VertexArray.SetElementArray(PrimitiveType.Triangles);
skyboxObject.VertexArray.Create(_Context);
#endregion
return(skyboxObject);
}