/// <summary>
/// Attach another GLSL Shader to this one.
/// </summary>
/// <param name="name"></param>
public void AttachChildShader(string name)
{
// is the name valid and already loaded?
// check with the high level program manager to see if it was loaded
HighLevelGpuProgram hlProgram = HighLevelGpuProgramManager.Instance.GetByName(name);
if (hlProgram != null)
{
if (hlProgram.SyntaxCode == "glsl")
{
// make sure attached program source gets loaded and compiled
// don't need a low level implementation for attached shader objects
// loadHighLevelImpl will only load the source and compile once
// so don't worry about calling it several times
GLSLProgram childShader = (GLSLProgram)hlProgram;
// load the source and attach the child shader only if supported
if (IsSupported)
{
childShader.LoadHighLevelImpl();
// add to the constainer
attachedGLSLPrograms.Add(childShader);
attachedShaderNames += name + " ";
}
}
}
}
public GLSLGpuProgram(GLSLProgram parent)
: base(parent.Creator, parent.Name, parent.Handle, parent.Group, false, null)
{
// store off the reference to the parent program
this.glslProgram = parent;
type = parent.Type;
syntaxCode = "glsl";
if (parent.Type == GpuProgramType.Vertex)
{
programId = ++vertexShaderCount;
}
else if (parent.Type == GpuProgramType.Fragment)
{
programId = ++fragmentShaderCount;
}
else
{
programId = ++geometryShaderCount;
}
// transfer skeletal animation status from parent
isSkeletalAnimationIncluded = this.glslProgram.IsSkeletalAnimationIncluded;
// there is nothing to load
LoadFromFile = false;
}
public GLSLGpuProgram( GLSLProgram parent )
: base( parent.Creator, parent.Name, parent.Handle, parent.Group, false, null )
{
this.Type = parent.Type;
this.SyntaxCode = "glsl";
// store off the reference to the parent program
glslProgram = parent;
if ( parent.Type == GpuProgramType.Vertex )
{
programId = ++vertexShaderCount;
}
else if (parent.Type == GpuProgramType.Fragment)
{
programId = ++fragmentShaderCount;
}
else
{
programId = ++geometryShaderCount;
}
// transfer skeletal animation status from parent
this.IsSkeletalAnimationIncluded = glslProgram.IsSkeletalAnimationIncluded;
// there is nothing to load
//LoadFromFile = false;
}
public GLSLGpuProgram(GLSLProgram parent)
: base(parent.Name, parent.Type, "glsl")
{
// store off the reference to the parent program
glslProgram = parent;
if(parent.Type == GpuProgramType.Vertex) {
programId = ++vertexShaderCount;
}
else {
programId = ++fragmentShaderCount;
}
// there is nothing to load
loadFromFile = false;
}
public GLSLGpuProgram(GLSLProgram parent) : base(parent.Name, parent.Type, "glsl")
{
// store off the reference to the parent program
glslProgram = parent;
if (parent.Type == GpuProgramType.Vertex)
{
programId = ++vertexShaderCount;
}
else
{
programId = ++fragmentShaderCount;
}
// there is nothing to load
loadFromFile = false;
}
/// <summary>
///
/// </summary>
/// <param name="programObject"></param>
public void AttachToProgramObject(int programObject)
{
Gl.glAttachObjectARB(programObject, glHandle);
GLSLHelper.CheckForGLSLError("Error attaching " + this.name + " shader object to GLSL Program Object.", programObject);
// atach child objects
for (int i = 0; i < attachedGLSLPrograms.Count; i++)
{
GLSLProgram childShader = (GLSLProgram)attachedGLSLPrograms[i];
// bug in ATI GLSL linker : modules without main function must be recompiled each time
// they are linked to a different program object
// don't check for compile errors since there won't be any
// *** minor inconvenience until ATI fixes there driver
childShader.Compile(false);
childShader.AttachToProgramObject(programObject);
}
}
