// TODO Store Shader Code
internal static ShaderProgram CreateFromString(string vertexShaderCode, string fragmentShaderCode)
{
using (TracedStopwatch.Start("load shader from string: "))
{
var rv = new ShaderProgram
{
VertexShaderFileName = "Created From String",
FragmentShaderFileName = "Created From String",
VertexShaderCode = vertexShaderCode,
FragmentShaderCode = fragmentShaderCode
};
var vertexShader = OpenGL.GlBindings.CreateShader(ShaderType.VertexShader);
GlBindings.ShaderSource(vertexShader, vertexShaderCode);
GlBindings.CompileShader(vertexShader);
int result;
GlBindings.GetShaderInfo(vertexShader, ShaderParameter.CompileStatus, out result);
if (result != (int)Result.Ok)
{
var error = GlBindings.GetShaderInfoLog(vertexShader);
Console.WriteLine("Shader Compilation Failed:/r/n" + error);
}
// Fragment Shader
var fragmentShader = OpenGL.GlBindings.CreateShader(ShaderType.FragmentShader);
GlBindings.ShaderSource(fragmentShader, fragmentShaderCode);
GlBindings.CompileShader(fragmentShader);
GlBindings.GetShaderInfo(fragmentShader, ShaderParameter.CompileStatus, out result);
if (result != (int)Result.Ok)
{
var error = OpenGL.GlBindings.GetShaderInfoLog(fragmentShader);
Console.WriteLine("Shader Compilation Failed:/r/n" + error);
}
// Link Shaders
rv.ShaderProgramId = OpenGL.GlBindings.CreateProgram();
GlBindings.AttachShader(rv.ShaderProgramId, vertexShader);
GlBindings.AttachShader(rv.ShaderProgramId, fragmentShader);
GlBindings.LinkProgram(rv.ShaderProgramId);
GlBindings.GetProgramInfo(rv.ShaderProgramId, ProgramParameter.LinkStatus, out result);
if (result != (int)Result.Ok)
{
var error = OpenGL.GlBindings.GetProgramInfoLog(rv.ShaderProgramId);
Console.WriteLine("Shader Link Failed:/r/n" + error);
}
GlBindings.GetProgramInfo(rv.ShaderProgramId, ProgramParameter.GL_ACTIVE_UNIFORMS, out result);
//if (result != (int)Result.Ok)
{
Console.WriteLine("Active Uniform Count:" + (int)result);
}
for (var i = 0; i < result; i++)
{
var uniformInfo = GlBindings.GetActiveUniformInfo(rv.ShaderProgramId, i);
Console.WriteLine("Active Uniform: " + uniformInfo);
}
/*
* glGetProgramiv(program, GL_ACTIVE_UNIFORMS, &count);
* printf("Active Uniforms: %d\n", count);
*
*/
GlBindings.DeleteShader(fragmentShader);
GlBindings.DeleteShader(vertexShader);
return(rv);
}
}
