/// <summary>
/// Create a shader object from this Object.
/// </summary>
/// <returns></returns>
public ShaderObject Create()
{
ShaderObject shaderObject = new ShaderObject(Stage);
// Load source
shaderObject.LoadSource(Path);
return(shaderObject);
}
/// <summary>
/// Create a program from this Program.
/// </summary>
/// <param name="cctx"></param>
/// <returns></returns>
public ShaderProgram Create(ShaderCompilerContext cctx)
{
if (String.IsNullOrEmpty(Id))
{
throw new InvalidOperationException("invalid program identifier");
}
if (cctx == null)
{
throw new ArgumentNullException("cctx");
}
ShaderProgram shaderProgram = new ShaderProgram(Id);
// Attach required objects
foreach (Object shaderProgramObject in Objects)
{
ShaderObject shaderObject = new ShaderObject(shaderProgramObject.Stage);
// Load source
shaderObject.LoadSource(shaderProgramObject.Path);
// Attach object
shaderProgram.AttachShader(shaderObject);
}
// Register attributes semantic
foreach (Attribute attribute in Attributes)
{
shaderProgram.SetAttributeSemantic(attribute.Name, attribute.Semantic);
if (attribute.Location >= 0)
{
shaderProgram.SetAttributeLocation(attribute.Name, attribute.Location);
}
}
// Register uniforms semantic
foreach (Uniform uniform in Uniforms)
{
shaderProgram.SetUniformSemantic(uniform.Name, uniform.Semantic);
}
shaderProgram.Create(cctx);
return(shaderProgram);
}
/// <summary>
/// Actually create this ShaderObject resources.
/// </summary>
/// <param name="ctx">
/// A <see cref="GraphicsContext"/> used for allocating resources.
/// </param>
protected override void CreateObject(GraphicsContext ctx)
{
CheckCurrentContext(ctx);
if (ctx.Extensions.ShadingLanguageInclude_ARB)
{
List <string> source = ShaderObject.CleanSource(Source);
// Build include source string
StringBuilder sb = new StringBuilder();
foreach (string line in Source)
{
sb.Append(line);
}
// Create shader include
Gl.NamedStringARB(Gl.SHADER_INCLUDE_ARB, -1, IncludePath, -1, sb.ToString());
}
}
/// <summary>
/// Load the shader source from an embedded resource
/// </summary>
/// <param name="resourcePath">
/// A <see cref="String"/> that specify the embedded resource path.
/// </param>
/// <exception cref="ArgumentNullException">
/// Exception thrown if <paramref name="resourcePath"/> is null.
/// </exception>
/// <exception cref="ArgumentException">
/// Exception thrown if no embedded resource can be found.
/// </exception>
public void LoadSource(string resourcePath)
{
_SourceStrings = ShaderObject.LoadSourceLines(resourcePath);
}
/// <summary>
/// Load the shader source from a stream.
/// </summary>
/// <param name="sourceStream">
/// A <see cref="Stream"/>that holds the source lines.
/// </param>
/// <exception cref="ArgumentNullException">
/// Exception thrown in the case <paramref name="sourceStream"/> is null.
/// </exception>
public void LoadSource(Stream sourceStream)
{
_SourceStrings = ShaderObject.LoadSourceLines(sourceStream);
}
