//Shader Compilation
public static void issuemodifyShaderRequest(GLSLShaderConfig config, GLSLShaderText shaderText)
{
Console.WriteLine("Sending Shader Modification Request");
ThreadRequest req = new ThreadRequest();
req.type = THREAD_REQUEST_TYPE.GL_MODIFY_SHADER_REQUEST;
req.arguments.Add(config);
req.arguments.Add(shaderText);
//Send request
CallBacks.issueRequestToGLControl(ref req);
}
//GLPreparation
public static GLSLShaderConfig compileShader(GLSLShaderText vs, GLSLShaderText fs, GLSLShaderText gs, GLSLShaderText tes, GLSLShaderText tcs, SHADER_TYPE type, ref string log)
{
GLSLShaderConfig shader_conf = new GLSLShaderConfig(vs, fs, gs, tcs, tes, type);
//Set modify Shader delegate
shader_conf.modifyShader = issuemodifyShaderRequest;
compileShader(shader_conf);
log += shader_conf.log; //Append log
return(shader_conf);
}
public GLSLShaderConfig(GLSLShaderText vvs, GLSLShaderText ffs, GLSLShaderText ggs, GLSLShaderText ttcs, GLSLShaderText ttes, SHADER_TYPE type)
{
shader_type = type; //Set my custom shader type for recognition
//Store objects
fs_text = ffs;
gs_text = ggs;
vs_text = vvs;
tes_text = ttes;
tcs_text = ttcs;
//Set parents to the shader objects
ffs?.parentShaders.Add(this);
ggs?.parentShaders.Add(this);
vvs?.parentShaders.Add(this);
ttes?.parentShaders.Add(this);
ttcs?.parentShaders.Add(this);
}
static public void modifyShader(GLSLShaderConfig shader_conf, GLSLShaderText shaderText)
{
Console.WriteLine("Actually Modifying Shader");
int[] attached_shaders = new int[20];
int count;
int status_code;
GL.GetAttachedShaders(shader_conf.program_id, 20, out count, attached_shaders);
for (int i = 0; i < count; i++)
{
int[] shader_params = new int[10];
GL.GetShader(attached_shaders[i], OpenTK.Graphics.OpenGL4.ShaderParameter.ShaderType, shader_params);
if (shader_params[0] == (int)shaderText.shader_type)
{
Console.WriteLine("Found modified shader");
//Trying to compile shader
shaderText.compile();
//Attach new shader back to program
GL.DetachShader(shader_conf.program_id, attached_shaders[i]);
GL.AttachShader(shader_conf.program_id, shaderText.shader_object_id);
GL.LinkProgram(shader_conf.program_id);
GL.GetProgram(shader_conf.program_id, GetProgramParameterName.LinkStatus, out status_code);
if (status_code != 1)
{
Console.WriteLine("Unable to link the new shader. Reverting to the old shader");
return;
}
//Delete old shader and reload uniforms
loadActiveUniforms(shader_conf); //Re-load active uniforms
Console.WriteLine("Shader was modified successfully");
break;
}
}
Console.WriteLine("Shader was not found...");
}
public static GLSLShaderConfig compileShader(string vs_path, string fs_path, string gs_path, string tcs_path, string tes_path,
List <string> directives, List <string> includes, SHADER_TYPE type, ref string log)
{
List <string> defines = new List <string>();
//General Directives are provided here
foreach (string d in directives)
{
defines.Add(d);
}
//Material Flags are provided here
foreach (string f in includes)
{
defines.Add("_" + f);
}
//Main Object Shader - Deferred Shading
GLSLShaderText main_deferred_shader_vs = new GLSLShaderText(ShaderType.VertexShader);
GLSLShaderText main_deferred_shader_fs = new GLSLShaderText(ShaderType.FragmentShader);
foreach (string s in defines)
{
main_deferred_shader_vs.addString("#define " + s + "\n");
}
main_deferred_shader_vs.addStringFromFile(vs_path);
foreach (string s in defines)
{
main_deferred_shader_fs.addString("#define " + s + "\n");
}
main_deferred_shader_fs.addStringFromFile(fs_path);
GLSLShaderConfig conf = compileShader(main_deferred_shader_vs, main_deferred_shader_fs, null, null, null,
type, ref log);
conf.shaderHash = calculateShaderHash(includes);
return(conf);
}
