public Shader(string vertexFile, string fragmentFile, ShaderInputLayout layout)
{
_uniformCache = new Dictionary <string, int>();
_samplers = new Dictionary <string, int>();
_arraySamplers = new Dictionary <string, int>();
string vertexCode = File.ReadAllText(vertexFile);
string fragmentCode = File.ReadAllText(fragmentFile);
//Find samplers
{
int cSampler = 0;
string findCode = fragmentCode;
int i = findCode.IndexOf("uniform sampler2D");
while (i != -1)
{
findCode = findCode.Substring(i + 18);
int nx = findCode.IndexOf(';');
string var = findCode.Substring(0, nx);
if (var.EndsWith("]")) //Array sampler
{
nx = findCode.IndexOf('[');
string name = var.Substring(0, nx);
var = var.Substring(nx, var.Length - nx);
var = var.Substring(1, var.Length - 1).Substring(0, var.Length - 2);
int num = Convert.ToInt32(var);
_arraySamplers.Add(name, num);
cSampler += num;
}
else
{
_samplers.Add(var, cSampler);
cSampler++;
}
i = findCode.IndexOf("uniform sampler2D");
}
}
int vs = GL.CreateShader(ShaderType.VertexShader);
int ps = GL.CreateShader(ShaderType.FragmentShader);
GL.ShaderSource(vs, vertexCode);
GL.ShaderSource(ps, fragmentCode);
GL.CompileShader(vs);
GL.CompileShader(ps);
string vertexLog = GL.GetShaderInfoLog(vs);
string fragmentLog = GL.GetShaderInfoLog(ps);
if (!string.IsNullOrEmpty(vertexLog) || !string.IsNullOrEmpty(fragmentLog))
{
MessageBox.Show("Failed to compile shader:\nVertex shader log: " + vertexLog + "\nFragment shader log: " + fragmentLog);
return;
}
_shader = GL.CreateProgram();
GL.AttachShader(_shader, vs);
GL.AttachShader(_shader, ps);
if (layout != null)
{
layout.BindLayouts(_shader);
}
GL.LinkProgram(_shader);
GL.DeleteShader(vs);
GL.DeleteShader(ps);
string programLog = GL.GetShaderInfoLog(vs);
if (!string.IsNullOrEmpty(programLog))
{
MessageBox.Show("Failed to compile shader: " + programLog);
return;
}
}
public Shader(string vertexFile, string fragmentFile, ShaderInputLayout layout)
{
_uniformCache = new Dictionary<string, int>();
_samplers = new Dictionary<string, int>();
_arraySamplers = new Dictionary<string, int>();
string vertexCode = File.ReadAllText(vertexFile);
string fragmentCode = File.ReadAllText(fragmentFile);
//Find samplers
{
int cSampler = 0;
string findCode = fragmentCode;
int i = findCode.IndexOf("uniform sampler2D");
while (i != -1)
{
findCode = findCode.Substring(i + 18);
int nx = findCode.IndexOf(';');
string var = findCode.Substring(0, nx);
if (var.EndsWith("]")) //Array sampler
{
nx = findCode.IndexOf('[');
string name = var.Substring(0, nx);
var = var.Substring(nx, var.Length - nx);
var = var.Substring(1, var.Length - 1).Substring(0, var.Length - 2);
int num = Convert.ToInt32(var);
_arraySamplers.Add(name, num);
cSampler += num;
}
else
{
_samplers.Add(var, cSampler);
cSampler++;
}
i = findCode.IndexOf("uniform sampler2D");
}
}
int vs = GL.CreateShader(ShaderType.VertexShader);
int ps = GL.CreateShader(ShaderType.FragmentShader);
GL.ShaderSource(vs, vertexCode);
GL.ShaderSource(ps, fragmentCode);
GL.CompileShader(vs);
GL.CompileShader(ps);
string vertexLog = GL.GetShaderInfoLog(vs);
string fragmentLog = GL.GetShaderInfoLog(ps);
if (!string.IsNullOrEmpty(vertexLog) || !string.IsNullOrEmpty(fragmentLog))
{
MessageBox.Show("Failed to compile shader:\nVertex shader log: " + vertexLog + "\nFragment shader log: " + fragmentLog);
return;
}
_shader = GL.CreateProgram();
GL.AttachShader(_shader, vs);
GL.AttachShader(_shader, ps);
if (layout != null)
layout.BindLayouts(_shader);
GL.LinkProgram(_shader);
GL.DeleteShader(vs);
GL.DeleteShader(ps);
string programLog = GL.GetShaderInfoLog(vs);
if (!string.IsNullOrEmpty(programLog))
{
MessageBox.Show("Failed to compile shader: " + programLog);
return;
}
}
public void Dispose()
{
PixelShader.Dispose();
VertexShader.Dispose();
ShaderInputLayout.Dispose();
}
