internal GLProgram(bool valid, int programHandle, GLVertexSignature signature, GLUniformBlock[] uniformBlocks, GLUniform[] uniforms, string infoLog = null)
{
Valid = valid;
Handle = programHandle;
Signature = signature;
UniformBlocks = uniformBlocks;
Uniforms = uniforms;
InfoLog = infoLog;
}
public static GLProgram BuildShaderProgram(ShaderProgramSource source)
{
int programHandle = GL.CreateProgram();
int vertexShaderHandle = 0,
tessControlShaderHandle = 0,
tessEvalShaderHandle = 0,
geometryShaderHandle = 0,
fragmentShaderHandle = 0;
#region build single shaders
if (source.HasVertexStage)
{
vertexShaderHandle = BuildSingleShader(ShaderType.VertexShader, source.VertexSource);
GL.AttachShader(programHandle, vertexShaderHandle);
}
if (source.HasTessControlStage)
{
tessControlShaderHandle = BuildSingleShader(ShaderType.TessControlShader, source.TessControlSource);
GL.AttachShader(programHandle, tessControlShaderHandle);
}
if (source.HasTessEvalStage)
{
tessEvalShaderHandle = BuildSingleShader(ShaderType.TessEvaluationShader, source.TessEvalSource);
GL.AttachShader(programHandle, tessEvalShaderHandle);
}
if (source.HasGeometryStage)
{
geometryShaderHandle = BuildSingleShader(ShaderType.GeometryShader, source.GeometrySource);
GL.AttachShader(programHandle, geometryShaderHandle);
}
if (source.HasFragmentStage)
{
fragmentShaderHandle = BuildSingleShader(ShaderType.FragmentShader, source.FragmentSource);
GL.AttachShader(programHandle, fragmentShaderHandle);
}
#endregion
#region pre linking operations
#endregion
#region linking
GL.LinkProgram(programHandle);
int programStatus;
GL.GetProgram(programHandle, GetProgramParameterName.ValidateStatus, out programStatus);
string infoLog = GL.GetProgramInfoLog(programHandle);
#endregion
#region post linking operations
bool programValid = ValidateShaderProgram(programHandle);
var uniforms = ExtractUniforms(programHandle);
var uniformBlocks = ExtractUniformBlocks(programHandle, uniforms);
var attributes = ExtractAttributes(programHandle);
#endregion
#region clear single shaders
if (source.HasVertexStage)
{
GL.DeleteShader(vertexShaderHandle);
}
if (source.HasTessControlStage)
{
GL.DeleteShader(tessControlShaderHandle);
}
if (source.HasTessEvalStage)
{
GL.DeleteShader(tessEvalShaderHandle);
}
if (source.HasGeometryStage)
{
GL.DeleteShader(geometryShaderHandle);
}
if (source.HasFragmentStage)
{
GL.DeleteShader(fragmentShaderHandle);
}
#endregion
var signature = new GLVertexSignature(attributes);
return new GLProgram(programValid, programHandle, signature, uniformBlocks, uniforms, infoLog);
}
