public BackgroundShader(OpenGL gl)
: base(gl)
{
_program = new ShaderProgram();
var vertex = new VertexShader();
var fragment = new FragmentShader();
vertex.CreateInContext(gl);
vertex.SetSource(File.ReadAllText("Shaders/Background.vert.glsl"));
vertex.Compile();
fragment.CreateInContext(gl);
fragment.SetSource(File.ReadAllText("Shaders/Background.frag.glsl"));
fragment.Compile();
_program.CreateInContext(gl);
_program.AttachShader(vertex);
_program.AttachShader(fragment);
_program.Link();
Debug.WriteLine(_program.InfoLog);
foreach (var attachedShader in _program.AttachedShaders)
{
Debug.WriteLine(attachedShader.InfoLog);
}
}
public OctreeShader(OpenGL gl)
: base(gl)
{
_program = new ShaderProgram();
var vertex = new VertexShader();
var fragment = new FragmentShader();
var geo = new GeometryShader();
vertex.CreateInContext(gl);
vertex.SetSource(File.ReadAllText("Shaders/Octree.vert.glsl"));
vertex.Compile();
fragment.CreateInContext(gl);
fragment.SetSource(File.ReadAllText("Shaders/Octree.frag.glsl"));
fragment.Compile();
geo.CreateInContext(gl);
geo.SetSource(File.ReadAllText("Shaders/Octree.geo.glsl"));
geo.Compile();
_program.CreateInContext(gl);
_program.AttachShader(vertex);
_program.AttachShader(fragment);
_program.AttachShader(geo);
_program.Link();
Debug.WriteLine(_program.InfoLog);
foreach (var attachedShader in _program.AttachedShaders)
{
Debug.WriteLine(attachedShader.InfoLog);
}
_modelLocation = gl.GetUniformLocation(_program.ProgramObject, "Model");
_viewLocation = gl.GetUniformLocation(_program.ProgramObject, "View");
_projectionLocation = gl.GetUniformLocation(_program.ProgramObject, "Projection");
}
private void OpenGLControl_OpenGLInitialized(object sender, OpenGLEventArgs args)
{
OpenGL gl = args.OpenGL;
gl.Enable(OpenGL.GL_DEPTH_TEST);
float[] global_ambient = new float[] { 0.5f, 0.5f, 0.5f, 1.0f };
float[] light0pos = new float[] { 0.0f, 5.0f, 10.0f, 1.0f };
float[] light0ambient = new float[] { 0.2f, 0.2f, 0.2f, 1.0f };
float[] light0diffuse = new float[] { 0.3f, 0.3f, 0.3f, 1.0f };
float[] light0specular = new float[] { 0.8f, 0.8f, 0.8f, 1.0f };
float[] lmodel_ambient = new float[] { 0.2f, 0.2f, 0.2f, 1.0f };
gl.LightModel(OpenGL.GL_LIGHT_MODEL_AMBIENT, lmodel_ambient);
gl.LightModel(OpenGL.GL_LIGHT_MODEL_AMBIENT, global_ambient);
gl.Light(OpenGL.GL_LIGHT0, OpenGL.GL_POSITION, light0pos);
gl.Light(OpenGL.GL_LIGHT0, OpenGL.GL_AMBIENT, light0ambient);
gl.Light(OpenGL.GL_LIGHT0, OpenGL.GL_DIFFUSE, light0diffuse);
gl.Light(OpenGL.GL_LIGHT0, OpenGL.GL_SPECULAR, light0specular);
gl.Enable(OpenGL.GL_LIGHTING);
gl.Enable(OpenGL.GL_LIGHT0);
gl.ShadeModel(OpenGL.GL_SMOOTH);
// Create a vertex shader.
VertexShader vertexShader = new VertexShader();
vertexShader.CreateInContext(gl);
vertexShader.SetSource(
"void main()" + Environment.NewLine +
"{" + Environment.NewLine +
"gl_Position = ftransform();" + Environment.NewLine +
"}" + Environment.NewLine);
// Create a fragment shader.
FragmentShader fragmentShader = new FragmentShader();
fragmentShader.CreateInContext(gl);
fragmentShader.SetSource(
"void main()" + Environment.NewLine +
"{" + Environment.NewLine +
"gl_FragColor = vec4(0.4,0.4,0.8,1.0);" + Environment.NewLine +
"}" + Environment.NewLine);
// Compile them both.
vertexShader.Compile();
fragmentShader.Compile();
// Build a program.
program.CreateInContext(gl);
// Attach the shaders.
program.AttachShader(vertexShader);
program.AttachShader(fragmentShader);
program.Link();
}
public void CreateBasicShader(OpenGL _context)
{
//ThrowIfNull(_context);
// Create a vertex shader.
VertexShader vertexShader = new VertexShader();
vertexShader.CreateInContext(_context);
vertexShader.SetSource(
"void main()" + Environment.NewLine +
"{" + Environment.NewLine +
"gl_Position = ftransform();" + Environment.NewLine +
"}" + Environment.NewLine);
// Create a fragment shader.
FragmentShader fragmentShader = new FragmentShader();
fragmentShader.CreateInContext(_context);
fragmentShader.SetSource(
"void main()" + Environment.NewLine +
"{" + Environment.NewLine +
"gl_FragColor = vec4(0.4,0.4,0.8,1.0);" + Environment.NewLine +
"}" + Environment.NewLine);
// Compile them both.
vertexShader.Compile();
fragmentShader.Compile();
// Build a program.
ShaderProgram.CreateInContext(_context);
// Attach the shaders.
ShaderProgram.AttachShader(vertexShader);
ShaderProgram.AttachShader(fragmentShader);
ShaderProgram.Link();
}
/// <summary>
/// Sets the full shader source.
/// </summary>
/// <param name="source">The source.</param>
public void SetFullShaderSource(string source)
{
// To compile a full shader, we must have a file like this:
// -- Vertex
// <a vertex shader>
// -- Fragment
// <a fragment shader>
// Prepare the source code.
string vertexShader = string.Empty;
string fragmentShader = string.Empty;
// Keep track of what we're building, 0 is nothing
// 1 is the vertex shader, 2 is the fragment shader.
int code = 0;
// Go through the source line by line.
var lines = source.Split('\n');
foreach (var line in lines)
{
// If the line is a vertex shader, switch to vertex mode.
if (line.StartsWith("--") && line.Contains("Vertex"))
{
code = 1;
}
else if (line.StartsWith("--") && line.Contains("Fragment"))
{
code = 2;
}
else
{
// Add the line to the appropriate shader.
switch (code)
{
case 1:
vertexShader += line + Environment.NewLine;
break;
case 2:
fragmentShader += line + Environment.NewLine;
break;
}
}
}
// If we have a vertex shader, build it.
if (string.IsNullOrEmpty(vertexShader) == false)
{
VertexShader shader = new VertexShader();
shader.CreateInContext(CurrentOpenGLContext);
shader.SetSource(vertexShader);
AttachShader(shader);
}
if (string.IsNullOrEmpty(fragmentShader) == false)
{
FragmentShader shader = new FragmentShader();
shader.CreateInContext(CurrentOpenGLContext);
shader.SetSource(fragmentShader);
AttachShader(shader);
}
}
/// <summary>
/// Sets the full shader source.
/// </summary>
/// <param name="source">The source.</param>
public void SetFullShaderSource(string source)
{
// To compile a full shader, we must have a file like this:
// -- Vertex
// <a vertex shader>
// -- Fragment
// <a fragment shader>
// Prepare the source code.
string vertexShader = string.Empty;
string fragmentShader = string.Empty;
// Keep track of what we're building, 0 is nothing
// 1 is the vertex shader, 2 is the fragment shader.
int code = 0;
// Go through the source line by line.
var lines = source.Split('\n');
foreach (var line in lines)
{
// If the line is a vertex shader, switch to vertex mode.
if (line.StartsWith("--") && line.Contains("Vertex"))
{
code = 1;
}
else if (line.StartsWith("--") && line.Contains("Fragment"))
{
code = 2;
}
else
{
// Add the line to the appropriate shader.
switch (code)
{
case 1:
vertexShader += line + Environment.NewLine;
break;
case 2:
fragmentShader += line + Environment.NewLine;
break;
}
}
}
// If we have a vertex shader, build it.
if (string.IsNullOrEmpty(vertexShader) == false)
{
VertexShader shader = new VertexShader();
shader.CreateInContext(CurrentOpenGLContext);
shader.SetSource(vertexShader);
AttachShader(shader);
}
if (string.IsNullOrEmpty(fragmentShader) == false)
{
FragmentShader shader = new FragmentShader();
shader.CreateInContext(CurrentOpenGLContext);
shader.SetSource(fragmentShader);
AttachShader(shader);
}
}
