public void SetShader(IShaderProgramImp program)
{
_currentTextureUnit = 0;
_shaderParam2TexUnit.Clear();
GL.UseProgram(((ShaderProgramImp)program).Program);
}
public float GetParamValue(IShaderProgramImp program, IShaderParam param)
{
float f;
GL.GetUniform(((ShaderProgramImp)program).Program, ((ShaderParam)param).handle, out f);
return(f);
}
public IShaderParam GetShaderParam(IShaderProgramImp shaderProgram, string paramName)
{
int h = GL.GetUniformLocation(((ShaderProgramImp)shaderProgram).Program, paramName);
return((h == -1) ? null : new ShaderParam {
handle = h
});
}
/// <summary>
/// Initializes a new instance of the <see cref="ShaderProgram"/> class.
/// </summary>
/// <param name="renderContextImp">The <see cref="IRenderContextImp"/>.</param>
/// <param name="shaderProgramImp">The <see cref="IShaderProgramImp"/>.</param>
internal ShaderProgram(IRenderContextImp renderContextImp, IShaderProgramImp shaderProgramImp)
{
_spi = shaderProgramImp;
_rci = renderContextImp;
_paramsByName = new Dictionary <string, ShaderParamInfo>();
foreach (ShaderParamInfo info in _rci.GetShaderParamList(_spi))
{
_paramsByName.Add(info.Name, info);
}
}
public IList <ShaderParamInfo> GetShaderParamList(IShaderProgramImp shaderProgram)
{
var sp = (ShaderProgramImp)shaderProgram;
int nParams;
GL.GetProgram(sp.Program, ProgramParameter.ActiveUniforms, out nParams);
List <ShaderParamInfo> list = new List <ShaderParamInfo>();
for (int i = 0; i < nParams; i++)
{
ActiveUniformType t;
var ret = new ShaderParamInfo();
ret.Name = GL.GetActiveUniform(sp.Program, i, out ret.Size, out t);
ret.Handle = GetShaderParam(sp, ret.Name);
switch (t)
{
case ActiveUniformType.Int:
ret.Type = typeof(int);
break;
case ActiveUniformType.Float:
ret.Type = typeof(float);
break;
case ActiveUniformType.FloatVec2:
ret.Type = typeof(float2);
break;
case ActiveUniformType.FloatVec3:
ret.Type = typeof(float3);
break;
case ActiveUniformType.FloatVec4:
ret.Type = typeof(float4);
break;
case ActiveUniformType.FloatMat4:
ret.Type = typeof(float4x4);
break;
case ActiveUniformType.Sampler2D:
//TODO ret.Type = typeof (sampler?);
break;
default:
throw new ArgumentOutOfRangeException();
}
list.Add(ret);
}
return(list);
}
/// <summary>
/// Initializes a new instance of the <see cref="ShaderProgram"/> class.
/// </summary>
/// <param name="renderContextImp">The <see cref="IRenderContextImp"/>.</param>
/// <param name="shaderProgramImp">The <see cref="IShaderProgramImp"/>.</param>
internal ShaderProgram(IRenderContextImp renderContextImp, IShaderProgramImp shaderProgramImp)
{
_spi = shaderProgramImp;
_rci = renderContextImp;
_paramsByName = new Dictionary<string, IShaderParam>();
foreach (ShaderParamInfo info in _rci.GetShaderParamList(_spi))
{
_paramsByName.Add(info.Name, info.Handle);
}
//_paramsByName = new Dictionary<string, ShaderParamInfo>();
//foreach (ShaderParamInfo info in _rci.GetShaderParamList(_spi))
//{
// ShaderParamInfo newInfo = new ShaderParamInfo()
// {
// Handle = info.Handle,
// Name = info.Name,
// Type = info.Type,
// Size = info.Size,
// };
// _paramsByName.Add(info.Name, newInfo);
//}
}
/// <summary>
/// Sets the shaderprogram onto the GL Rendercontext.
/// </summary>
/// <param name="program">The shaderprogram.</param>
public void SetShader(IShaderProgramImp program)
{
_currentTextureUnit = 0;
_shaderParam2TexUnit.Clear();
GL.UseProgram(((ShaderProgramImp) program).Program);
}
/// <summary>
/// Gets the shader parameter list of a specific <see cref="IShaderProgramImp" />.
/// </summary>
/// <param name="shaderProgram">The shader program.</param>
/// <returns>All Shader parameters of a shaderprogram are returned.</returns>
/// <exception cref="System.ArgumentOutOfRangeException"></exception>
public IList<ShaderParamInfo> GetShaderParamList(IShaderProgramImp shaderProgram)
{
var sp = (ShaderProgramImp)shaderProgram;
int nParams;
GL.GetProgram(sp.Program, ProgramParameter.ActiveUniforms, out nParams);
var list = new List<ShaderParamInfo>();
for (int i = 0; i < nParams; i++)
{
ActiveUniformType t;
var ret = new ShaderParamInfo();
ret.Name = GL.GetActiveUniform(sp.Program, i, out ret.Size, out t);
ret.Handle = GetShaderParam(sp, ret.Name);
switch (t)
{
case ActiveUniformType.Int:
ret.Type = typeof(int);
break;
case ActiveUniformType.Float:
ret.Type = typeof(float);
break;
case ActiveUniformType.FloatVec2:
ret.Type = typeof(float2);
break;
case ActiveUniformType.FloatVec3:
ret.Type = typeof(float3);
break;
case ActiveUniformType.FloatVec4:
ret.Type = typeof(float4);
break;
case ActiveUniformType.FloatMat4:
ret.Type = typeof(float4x4);
break;
case ActiveUniformType.Sampler2D:
ret.Type = typeof (ITexture);
break;
default:
throw new ArgumentOutOfRangeException();
}
list.Add(ret);
}
return list;
}
/// <summary>
/// Gets the shader parameter.
/// The Shader parameter is used to bind values inside of shaderprograms that run on the graphics card.
/// Do not use this function in frequent updates as it transfers information from graphics card to the cpu which takes time.
/// </summary>
/// <param name="shaderProgram">The shader program.</param>
/// <param name="paramName">Name of the parameter.</param>
/// <returns>The Shader parameter is returned if the name is found, otherwise null.</returns>
public IShaderParam GetShaderParam(IShaderProgramImp shaderProgram, string paramName)
{
int h = GL.GetUniformLocation(((ShaderProgramImp)shaderProgram).Program, paramName);
return (h == -1) ? null : new ShaderParam { handle = h };
}
/// <summary>
/// Gets the float parameter value inside a shaderprogram by using a <see cref="IShaderParam" /> as search reference.
/// Do not use this function in frequent updates as it transfers information from graphics card to the cpu which takes time.
/// </summary>
/// <param name="program">The program.</param>
/// <param name="param">The parameter.</param>
/// <returns>A float number (default is 0).</returns>
public float GetParamValue(IShaderProgramImp program, IShaderParam param)
{
float f;
GL.GetUniform(((ShaderProgramImp)program).Program, ((ShaderParam)param).handle, out f);
return f;
}
public float GetParamValue(IShaderProgramImp shaderProgram, IShaderParam param)
{
throw new System.NotImplementedException();
}
public IShaderParam GetShaderParam(IShaderProgramImp shaderProgram, string paramName)
{
throw new System.NotImplementedException();
}
public IList <ShaderParamInfo> GetShaderParamList(IShaderProgramImp shaderProgram)
{
throw new System.NotImplementedException();
}
public void RemoveShader(IShaderProgramImp sp)
{
throw new NotImplementedException();
}
public void SetShader(IShaderProgramImp shaderProgramImp)
{
throw new System.NotImplementedException();
}
