protected virtual void SetupUniforms(IEnumerable <Uniform> uniforms)
{
foreach (var uniform in uniforms)
{
var loc = GL.GetUniformLocation(PgmId, uniform.Name);
var val = uniform.GetValue();
var type = val.GetType();
if (type == typeof(float))
{
GL.Uniform1(loc, (float)val);
}
else if (type == typeof(double))
{
GL.Uniform1(loc, (double)val);
}
else if (type == typeof(int))
{
GL.Uniform1(loc, (int)val);
}
else if (type == typeof(uint))
{
GL.Uniform1(loc, (uint)val);
}
else if (type == typeof(Vector2))
{
var vec2 = (Vector2)val;
GL.Uniform2(loc, vec2.X, vec2.Y);
}
else
{
throw new ArgumentException($"Unsupported uniform type: {type}");
}
}
}
public void SetVectorArrayParameter(string name, int index, Vector3 vector, string shader)
{
GL.UseProgram(_shaderHandleDictionary[shader]);
int location = GL.GetUniformLocation(_shaderHandleDictionary[shader], name + "[" + index + "]");
if (location != -1)
{
GL.Uniform3(location, vector);
}
}
public void SetNumericParameter(string name, float number, string shader)
{
GL.UseProgram(_shaderHandleDictionary[shader]);
int location = GL.GetUniformLocation(_shaderHandleDictionary[shader], name);
if (location != -1)
{
GL.Uniform1(location, number);
}
}
public void SetMatrixParameter(string name, Matrix4 matrix, string shader)
{
GL.UseProgram(_shaderHandleDictionary[shader]);
int location = GL.GetUniformLocation(_shaderHandleDictionary[shader], name);
if (location != -1)
{
GL.UniformMatrix4(location, false, ref matrix);
}
}
public void SetNumericParameter(string name, float number)
{
foreach (var shaderHandle in _shaderHandleDictionary.Values)
{
GL.UseProgram(shaderHandle);
int location = GL.GetUniformLocation(shaderHandle, name);
if (location != -1)
{
GL.Uniform1(location, number);
}
}
}
public void SetVectorArrayParameter(string name, int index, Vector3 vector)
{
foreach (var shaderHandle in _shaderHandleDictionary.Values)
{
GL.UseProgram(shaderHandle);
int location = GL.GetUniformLocation(shaderHandle, name + "[" + index + "]");
if (location != -1)
{
GL.Uniform3(location, vector);
}
}
}
public void SetMatrixParameter(string name, Matrix4 matrix)
{
foreach (var shaderHandle in _shaderHandleDictionary.Values)
{
GL.UseProgram(shaderHandle);
int location = GL.GetUniformLocation(shaderHandle, name);
if (location != -1)
{
GL.UniformMatrix4(location, false, ref matrix);
}
}
}
public void UseTexture(string textureName, string shader, string uniformName)
{
if (!_textureHandleDictionary.ContainsKey(textureName))
{
throw new ApplicationException("Texture has to be added before using");
}
GL.UseProgram(_shaderHandleDictionary[shader]);
var textureInfo = _textureHandleDictionary[textureName];
GL.ActiveTexture(TextureUnit.Texture0 + textureInfo.Unit);
GL.BindTexture(TextureTarget.Texture2D, textureInfo.Handle);
int location = GL.GetUniformLocation(_shaderHandleDictionary[shader], uniformName);
if (location != -1)
{
int textureUnitIndex = textureInfo.Unit;
GL.Uniform1(location, textureUnitIndex);
}
}