public ShaderSizeInfo GetTypeSizeInfo(ShaderDataType type)
{
int bt = MeshData.BytesPerFloat;
ShaderSizeInfo result;
switch (type)
{
case ShaderDataType.Float:
result = new ShaderSizeInfo(bt, 1);
break;
case ShaderDataType.Float2:
result = new ShaderSizeInfo(bt * 2, 2);
break;
case ShaderDataType.Float3:
result = new ShaderSizeInfo(bt * 3, 3);
break;
case ShaderDataType.Float4:
result = new ShaderSizeInfo(bt * 4, 4);
break;
case ShaderDataType.Mat4:
result = new ShaderSizeInfo(bt * 16, 16);
break;
default:
result = new ShaderSizeInfo(0, 0);
break;
}
return(result);
}
public ShaderProgram(string nameParam, params Shader[] shaders)
{
handle = GL.CreateProgram();
foreach (var shader in shaders)
{
GL.AttachShader(handle, shader.Handle);
}
GL.LinkProgram(handle);
// Check link errors
int successValue = 0;
GL.GetProgram(handle, GetProgramParameterName.LinkStatus, out successValue);
if (successValue == 0)
{
Logger.LogError(Logger.ErrorState.Limited, "Shader link failed: " + GL.GetProgramInfoLog(handle));
}
programName = nameParam;
Logger.LogInfoLinePart("Creating Shader Program: ", ConsoleColor.Gray);
Logger.LogInfoLinePart(programName, ConsoleColor.Cyan);
Logger.LogInfoLineEnd();
// Load Uniforms
///////////////////////////////////
int uniformAmount = -1;
GL.GetProgram(handle, GetProgramParameterName.ActiveUniforms, out uniformAmount);
Error.checkGLError("Shader()");
ShaderUniformManager uniManager = ShaderUniformManager.GetSingleton();
Logger.LogInfo("Program linked.");
uniforms = new List <ShaderUniform>(uniformAmount);
int maxShaderNameSize = 100;
StringBuilder shaderName = new StringBuilder(maxShaderNameSize);
int writtenLength;
int uniformSize;
ActiveUniformType type;
Logger.LogInfo("Uniforms (" + uniformAmount + ") >>>");
for (int i = 0; i < uniformAmount; i++)
{
GL.GetActiveUniform(this.handle, i, maxShaderNameSize, out writtenLength, out uniformSize, out type, shaderName);
string uniformName = shaderName.ToString();
ShaderSizeInfo info = uniManager.GetTypeSizeInfo(type);
ShaderUniform uniform = uniManager.CreateShaderUniform(uniformName, type, GetUniformLocation(this.handle, uniformName));
Logger.LogInfoLinePart(" " + i, ConsoleColor.White);
Logger.LogInfoLinePart("\t" + uniManager.GetDataTypeString(uniManager.UniformTypeToDataType(type)), ConsoleColor.Cyan);
Logger.LogInfoLinePart("\t" + uniformName + " (" + info.sizeElements + ")", ConsoleColor.White);
if (uniform.IsValid())
{
Logger.LogInfoLinePart("\t\t [", ConsoleColor.Gray);
Logger.LogInfoLinePart("OK", ConsoleColor.Green);
Logger.LogInfoLinePart("]", ConsoleColor.Gray);
uniforms.Add(uniform);
}
Logger.LogInfoLineEnd();
}
int attributeAmount = -1;
GL.GetProgram(handle, GetProgramParameterName.ActiveAttributes, out attributeAmount);
ActiveAttribType attribType;
int attrSize = -1;
Logger.LogInfo("Attributes (" + attributeAmount + ") >>>");
attributes = new List <ShaderAttribute>(attributeAmount);
for (int i = 0; i < attributeAmount; i++)
{
GL.GetActiveAttrib(this.handle, i, maxShaderNameSize, out writtenLength, out attrSize, out attribType, shaderName);
string attribName = shaderName.ToString();
int location = GetAttributeLocation(handle, attribName);
ShaderSizeInfo info = uniManager.GetTypeSizeInfo(attribType);
ShaderAttribute attribute = uniManager.CreateShaderAttribute(attribName, attribType, GetAttributeLocation(this.handle, attribName), info.sizeElements);
Logger.LogInfoLinePart(" " + i, ConsoleColor.White);
Logger.LogInfoLinePart("\t" + uniManager.GetDataTypeString(uniManager.AttribTypeToDataType(attribType)), ConsoleColor.Cyan);
Logger.LogInfoLinePart("\t" + attribName + " (" + info.sizeElements + ")", ConsoleColor.White);
Logger.LogInfoLinePart("\t " + location, ConsoleColor.Red);
if (attribute.IsValid())
{
Logger.LogInfoLinePart("\t\t [", ConsoleColor.Gray);
Logger.LogInfoLinePart("OK", ConsoleColor.Green);
Logger.LogInfoLinePart("]", ConsoleColor.Gray);
attributes.Add(attribute);
}
Logger.LogInfoLineEnd();
}
foreach (var shader in shaders)
{
GL.DeleteShader(shader.Handle);
}
}
