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");
}
public FlatShader(OpenGL gl)
: base(gl)
{
_program = new ShaderProgram();
var vertex = new VertexShader();
var fragment = new FragmentShader();
vertex.CreateInContext(gl);
vertex.SetSource(File.ReadAllText("Shaders/Flat.vert.glsl"));
vertex.Compile();
fragment.CreateInContext(gl);
fragment.SetSource(File.ReadAllText("Shaders/Flat.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);
}
}
private void OpenGLControl_OpenGLInitialized(object sender, OpenGLEventArgs args)
{
OpenGL gl = args.OpenGL;
Foo();
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 static void CompileShadersHotReload(OpenGL gl)
{
foreach (var name in shaderNames)
{
bool vertChanged = ResourceLoader.LoadTextFileIfChanged($"Shaders\\{name}.vert", out var vert);
bool fragChanged = ResourceLoader.LoadTextFileIfChanged($"Shaders\\{name}.frag", out var frag);
if (vertChanged || fragChanged)
{
string shaderError = "";
ShaderProgram program = new ShaderProgram();
// Create a vertex shader.
VertexShader vertexShader = new VertexShader();
vertexShader.CreateInContext(gl);
vertexShader.SetSource(vert);
// Create a fragment shader.
FragmentShader fragmentShader = new FragmentShader();
fragmentShader.CreateInContext(gl);
fragmentShader.SetSource(frag);
// Compile them both.
vertexShader.Compile();
fragmentShader.Compile();
if ((bool)!vertexShader.CompileStatus)
{
shaderError += $"{name}.vert: " + vertexShader.InfoLog + "\n\n";
}
if ((bool)!fragmentShader.CompileStatus)
{
shaderError += $"{name}.frag: " + fragmentShader.InfoLog;
}
// Build a program.
program.CreateInContext(gl);
// Attach the shaders.
program.AttachShader(vertexShader);
program.AttachShader(fragmentShader);
program.Link();
programs[name] = program;
shaderErrors[name] = shaderError;
}
}
}
public static void CompileShaders(OpenGL gl)
{
foreach (var name in shaderNames)
{
ShaderProgram program = new ShaderProgram();
string shaderError = "";
// Create a vertex shader.
VertexShader vertexShader = new VertexShader();
vertexShader.CreateInContext(gl);
vertexShader.SetSource(ResourceLoader.LoadEmbeddedTextFile($"Shaders\\{name}.vert"));
// Create a fragment shader.
FragmentShader fragmentShader = new FragmentShader();
fragmentShader.CreateInContext(gl);
fragmentShader.SetSource(ResourceLoader.LoadEmbeddedTextFile($"Shaders\\{name}.frag"));
// Compile them both.
vertexShader.Compile();
fragmentShader.Compile();
if ((bool)!vertexShader.CompileStatus)
{
shaderError += "color.vert: " + vertexShader.InfoLog + "\n\n";
}
if ((bool)!fragmentShader.CompileStatus)
{
shaderError += "color.frag: " + fragmentShader.InfoLog;
}
// Build a program.
program.CreateInContext(gl);
// Attach the shaders.
program.AttachShader(vertexShader);
program.AttachShader(fragmentShader);
program.Link();
programs.Add(name, program);
shaderErrors.Add(name, shaderError);
}
}
public static void CreateBasicShader(OpenGLWindow _window)
{
//ThrowIfNull(_window);
OpenGL context = _window.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.
_window.m_shaderProgram.CreateInContext(context);
// Attach the shaders.
_window.m_shaderProgram.AttachShader(vertexShader);
_window.m_shaderProgram.AttachShader(fragmentShader);
_window.m_shaderProgram.Link();
}
public void swapShader(OpenGL gl, string Vertex_shader_textbox, string Fragment_shader_textbox)
{
// Create a vertex shader.
vertexShader = new VertexShader();
vertexShader.CreateInContext(gl);
vertexShader.SetSource(Vertex_shader_textbox);
// Create a fragment shader.
fragmentShader = new FragmentShader();
fragmentShader.CreateInContext(gl);
fragmentShader.SetSource(Fragment_shader_textbox);
// Compile them both.
vertexShader.Compile();
fragmentShader.Compile();
// Build a program.
m_shaderProgram.CreateInContext(gl);
// Attach the shaders.
m_shaderProgram.AttachShader(vertexShader);
m_shaderProgram.AttachShader(fragmentShader);
m_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);
}
}
public void OpenGLInit(object sender, OpenGLEventArgs args, string Vertex_shader_textbox, string Fragment_shader_textbox)
{
//CREATE THE VAO
args.OpenGL.GenVertexArrays(1, vao);
args.OpenGL.BindVertexArray(vao[0]);
//CREATE THE VBO AND POPULATE IT WITH THE QUAD VERTICIES
args.OpenGL.GenBuffers(1, vbo);
args.OpenGL.BindBuffer(OpenGL.GL_ARRAY_BUFFER, vbo[0]);
args.OpenGL.BufferData(OpenGL.GL_ARRAY_BUFFER, g_vertex_buffer_data.Length * sizeof(float), GCHandle.Alloc(g_vertex_buffer_data, GCHandleType.Pinned).AddrOfPinnedObject(), OpenGL.GL_STATIC_DRAW);
args.OpenGL.VertexAttribPointer(0, 3, OpenGL.GL_FLOAT, false, 0, new IntPtr(0));
//Tell opengl what attribute arrays we need
args.OpenGL.EnableVertexAttribArray(0);
args.OpenGL.EnableVertexAttribArray(1);
args.OpenGL.EnableVertexAttribArray(2);
args.OpenGL.EnableVertexAttribArray(3);
//This is the position attribute pointer (layout(location = 0) in vec2 vertexPosition;)
args.OpenGL.VertexAttribPointer(1, 2, OpenGL.GL_FLOAT, false, 0, new IntPtr(0));
//This is the color attribute pointer layout(location = 1) in vec4 vertexColor;
args.OpenGL.VertexAttribPointer(2, 4, OpenGL.GL_UNSIGNED_BYTE, false, 0, new IntPtr(2));
//This is the UV attribute pointer layout(location = 2) in vec2 vertexUV;
args.OpenGL.VertexAttribPointer(3, 2, OpenGL.GL_FLOAT, false, 0, new IntPtr(0));
//UNBIND WHEN FINISHED
args.OpenGL.BindVertexArray(0);
args.OpenGL.BindBuffer(OpenGL.GL_ARRAY_BUFFER, 0);
//SET SOME GL CONSTANTS
args.OpenGL.Enable(OpenGL.GL_DEPTH_TEST);
args.OpenGL.Enable(OpenGL.GL_BLEND);
args.OpenGL.BlendFunc(OpenGL.GL_SRC_ALPHA, OpenGL.GL_ONE_MINUS_SRC_ALPHA);
args.OpenGL.ShadeModel(OpenGL.GL_SMOOTH);
// Create a vertex shader.
vertexShader = new VertexShader();
vertexShader.CreateInContext(args.OpenGL);
vertexShader.SetSource(Vertex_shader_textbox);
// Create a fragment shader.
fragmentShader = new FragmentShader();
fragmentShader.CreateInContext(args.OpenGL);
fragmentShader.SetSource(Fragment_shader_textbox);
// Compile them both.
vertexShader.Compile();
fragmentShader.Compile();
// Build a program.
m_shaderProgram.CreateInContext(args.OpenGL);
// Attach the shaders.
m_shaderProgram.AttachShader(vertexShader);
m_shaderProgram.AttachShader(fragmentShader);
m_shaderProgram.Link();
//SET UP TEXTURE 1
texture.Create(args.OpenGL, Environment.CurrentDirectory + @"\1.png");
texture.Bind(args.OpenGL);
}
