/// <summary>
/// Compiles a shader.
/// </summary>
/// <param name="type">The type of shader to compile.</param>
/// <param name="source">The shader source.</param>
/// <returns>The id of the compiled shader.</returns>
private uint CompileShader(ShaderType type, string source)
{
// Create and compile the shader.
uint shaderPointer = Gl.CreateShader(type);
Gl.ShaderSource(shaderPointer, new[] { source });
Gl.CompileShader(shaderPointer);
CheckError($"shader compilation\n{source}");
// Check if there's a log to print.
Gl.GetShader(shaderPointer, ShaderParameterName.InfoLogLength, out int lLength);
if (lLength > 0)
{
// Get the info log.
StringBuilder compileStatusReader = new StringBuilder(lLength);
Gl.GetShaderInfoLog(shaderPointer, lLength, out int _, compileStatusReader);
string compileStatus = compileStatusReader.ToString();
Engine.Log.Warning($"Compilation log for shader of type {type}: {compileStatus}.\nSource:{source}", MessageSource.GL);
}
// Check if the shader compiled successfully, if not return 0.
Gl.GetShader(shaderPointer, ShaderParameterName.CompileStatus, out int status);
return(status == 1 ? shaderPointer : 0);
}
uint compileShader(OpenGL.ShaderType type, string source)
{
uint id = Gl.CreateShader(type);
Gl.ShaderSource(id, new string[] { source });
Gl.CompileShader(id);
// Check for compilation errors
int result;
Gl.GetShader(id, ShaderParameterName.CompileStatus, out result);
if (result == 0)
{
int length;
Gl.GetShader(id, ShaderParameterName.InfoLogLength, out length);
StringBuilder infoLog = new StringBuilder(length);
Gl.GetShaderInfoLog(id, length, out length, infoLog);
string shaderType = "Vertex";
if (type == OpenGL.ShaderType.GeometryShader)
{
shaderType = "Geometry";
}
if (type == OpenGL.ShaderType.FragmentShader)
{
shaderType = "Fragment";
}
Debug.WriteLine("ERROR: " + shaderType + " shader: " + infoLog.ToString());
}
return(id);
}
public Shader(string fragGlslPath, string vertGlslPath)
{
var fragGlslContents = File.ReadAllText(fragGlslPath);
var vertGlslContents = File.ReadAllText(vertGlslPath);
var fragId = Gl.CreateShader(ShaderType.FragmentShader);
Gl.ShaderSource(fragId, new[] { fragGlslContents });
Gl.CompileShader(fragId);
CheckForErrors(fragId);
var vertId = Gl.CreateShader(ShaderType.VertexShader);
Gl.ShaderSource(vertId, new[] { vertGlslContents });
Gl.CompileShader(vertId);
CheckForErrors(vertId);
Id = Gl.CreateProgram();
Gl.AttachShader(Id, fragId);
Gl.AttachShader(Id, vertId);
Gl.LinkProgram(Id);
Gl.DeleteShader(fragId);
Gl.DeleteShader(vertId);
}
public Shader(string source, ShaderType type)
{
Type = type;
ID = Gl.CreateShader(type);
Gl.ShaderSource(ID, new[] { source });
Gl.CompileShader(ID);
int compiled;
Gl.GetShader(ID, ShaderParameterName.CompileStatus, out compiled);
if (compiled != 0)
{
Trace.TraceInformation("Compiled {0} successfully.", type);
return;
}
const int logMaxLength = 1024;
var infoLog = new System.Text.StringBuilder(logMaxLength);
int infoLogLength;
Gl.GetShaderInfoLog(ID, logMaxLength, out infoLogLength, infoLog);
string message = $"Unable to compile shader: {infoLog}";
Trace.TraceError(message);
throw new InvalidOperationException(message);
}
/// <summary>
/// Creates and compiles a shader object.
/// </summary>
/// <param name="shaderType">
/// Specifies the type of shader to be created.
/// </param>
/// <param name="source">
/// Specifies an array of pointers to strings containing the source code to be loaded into the shader.
/// </param>
/// <returns>
/// It returns a shader object of type <paramref name="shaderType"/>.
/// </returns>
protected static UInt32 CreateShaderObject(ShaderType shaderType, string[] source)
{
UInt32 shaderObject = 0;
try {
shaderObject = Gl.CreateShader(shaderType);
Gl.ShaderSource(shaderObject, source);
Gl.CompileShader(shaderObject);
int compileStatus;
Gl.GetShader(shaderObject, ShaderParameterName.CompileStatus, out compileStatus);
if (compileStatus == Gl.FALSE)
{
StringBuilder log = new StringBuilder(4096);
int logLength;
Gl.GetShaderInfoLog(shaderObject, log.Capacity, out logLength, log);
throw new InvalidOperationException(log.ToString());
}
return(shaderObject);
} catch {
if (shaderObject != 0)
{
Gl.DeleteShader(shaderObject);
}
throw;
}
}
public static uint Compile(string[] source, ShaderType type)
{
uint shader = Gl.CreateShader(type);
Gl.ShaderSource(shader, source);
Gl.CompileShader(shader);
int compiled;
Gl.GetShader(shader, ShaderParameterName.CompileStatus, out compiled);
if (compiled != 0)
{
return(shader);
}
Gl.DeleteShader(shader);
const int logMaxLength = 1024;
StringBuilder infoLog = new StringBuilder(logMaxLength);
int infoLogLength;
Gl.GetShaderInfoLog(shader, logMaxLength, out infoLogLength, infoLog);
throw new InvalidOperationException($"unable to compile shader: {infoLog}");
}
private bool compile(ref uint shaderId, ShaderType type, string[] src)
{
int errorcp = 0;
shaderId = Gl.CreateShader(type);
if (shaderId == 0)
{
Console.WriteLine("ERROR: shader type (" + type + ") does not exist");
}
Gl.ShaderSource(shaderId, src);
Gl.CompileShader(shaderId);
Gl.GetShader(shaderId, ShaderParameterName.CompileStatus, out errorcp);
if (errorcp != Gl.TRUE)
{
Console.WriteLine("ERROR: while compiling Shader :");
int errorSize;
Gl.GetShader(shaderId, ShaderParameterName.InfoLogLength, out errorSize);
StringBuilder error = new StringBuilder(1024);
Gl.GetShaderInfoLog(shaderId, errorSize, out errorSize, error);
Console.WriteLine(error.ToString());
error.Clear();
Gl.DeleteShader(shaderId);
return(false);
}
return(true);
}
public void Load()
{
if (ShaderContainer.Shaders.Any(s => s.fragShaderAsset.MountPath == fragShaderAsset.MountPath && s.vertShaderAsset.MountPath == vertShaderAsset.MountPath))
{
var cachedShader = ShaderContainer.Shaders.First(s => s.fragShaderAsset.MountPath == fragShaderAsset.MountPath && s.vertShaderAsset.MountPath == vertShaderAsset.MountPath);
Id = cachedShader.Id;
return;
}
var fragGlslContents = fragShaderAsset.AsString();
var vertGlslContents = vertShaderAsset.AsString();
var fragId = Gl.CreateShader(ShaderType.FragmentShader);
Gl.ShaderSource(fragId, new[] { fragGlslContents });
Gl.CompileShader(fragId);
CheckForErrors(fragId);
var vertId = Gl.CreateShader(ShaderType.VertexShader);
Gl.ShaderSource(vertId, new[] { vertGlslContents });
Gl.CompileShader(vertId);
CheckForErrors(vertId);
Id = Gl.CreateProgram();
Gl.AttachShader(Id, fragId);
Gl.AttachShader(Id, vertId);
Gl.LinkProgram(Id);
Gl.DeleteShader(fragId);
Gl.DeleteShader(vertId);
}
private void CreateShaders()
{
var fragmentShader = Gl.CreateShader(ShaderType.FragmentShader);
var vertexShader = Gl.CreateShader(ShaderType.VertexShader);
var sb = new StringBuilder(1000);
void CompileShader(uint id, string file)
{
var source = LoadShaderFromResource(file);
Gl.ShaderSource(id, new[] { source });
Gl.CompileShader(id);
Gl.GetShader(id, ShaderParameterName.CompileStatus, out int compileStatus);
Debug.WriteLine($"Compile status: {compileStatus == Gl.TRUE}");
Gl.GetShaderInfoLog(id, sb.Capacity, out int _, sb);
Debug.WriteLine(sb.ToString());
}
CompileShader(fragmentShader, "FragmentShader.glsl");
CompileShader(vertexShader, "VertexShader.glsl");
_program = Gl.CreateProgram();
Gl.AttachShader(_program, fragmentShader);
Gl.AttachShader(_program, vertexShader);
Gl.LinkProgram(_program);
Gl.GetProgram(_program, ProgramProperty.LinkStatus, out int linkResult);
Debug.WriteLine($"Link status: {linkResult == Gl.TRUE}");
Gl.GetProgramInfoLog(_program, sb.Capacity, out int _, sb);
}
public static ShaderStage FromSource(IEnumerable <string> codeLines, StageType type)
{
uint handle = Gl.CreateShader((ShaderType)type);
var sourceCodeLines = codeLines.ToArray();
for (int i = 0; i < sourceCodeLines.Length; i++)
{
sourceCodeLines[i] += sourceCodeLines[i].EndsWith("\n") ? "" : "\n";
}
Gl.ShaderSource(handle, sourceCodeLines);
Gl.CompileShader(handle);
Gl.GetShader(handle, ShaderParameterName.CompileStatus, out int compiled);
if (compiled != Gl.TRUE)
{
Gl.GetShader(handle, ShaderParameterName.InfoLogLength, out int logLength);
var errorLog = new StringBuilder(logLength);
Gl.GetShaderInfoLog(handle, logLength, out int _, errorLog);
throw new Exception("Shader Stage Compile Errors: \n" + errorLog);
}
return(new ShaderStage(handle, type));
}
public GlObject(ShaderType shaderType, string[] source)
{
if (source == null)
{
throw new ArgumentNullException(nameof(source));
}
// Create
ShaderName = Gl.CreateShader(shaderType);
// Submit source code
Gl.ShaderSource(ShaderName, source);
// Compile
Gl.CompileShader(ShaderName);
// Check compilation status
int compiled;
Gl.GetShader(ShaderName, ShaderParameterName.CompileStatus, out compiled);
if (compiled != 0)
{
return;
}
// Throw exception on compilation errors
const int logMaxLength = 1024;
StringBuilder infolog = new StringBuilder(logMaxLength);
int infologLength;
Gl.GetShaderInfoLog(ShaderName, logMaxLength, out infologLength, infolog);
throw new InvalidOperationException($"unable to compile shader: {infolog}");
}
private static uint loadShader(string[] shaderString, ShaderType type)
{
uint shaderID = Gl.CreateShader(type);
Console.WriteLine(shaderID);
Gl.ShaderSource(shaderID, shaderString);
Gl.CompileShader(shaderID);
int status;
Gl.GetShader(shaderID, ShaderParameterName.CompileStatus, out status);
if (status == Gl.TRUE)
{
Console.WriteLine($"{type} Creation Success.");
return(shaderID);
}
else if (status == Gl.FALSE)
{
Console.WriteLine($"{type} creation fail.");
Gl.GetShader(shaderID, ShaderParameterName.InfoLogLength, out int logLength);
int logMaxLength = 1024;
StringBuilder infoLog = new StringBuilder(logMaxLength);
Gl.GetShaderInfoLog(shaderID, 1024, out int infoLogLength, infoLog);
Console.WriteLine("Errors: \n{0}", infoLog.ToString());
return(0);
}
return(0);
}
public bool Compile()
{
GlHelper.ThrowNullException(Id);
Gl.CompileShader(Id);
GlHelper.GetError();
return(Status);
}
private uint CompileShader(string source, ShaderType type)
{
uint shader = Gl.CreateShader(type);
if (shader == 0)
{
return(shader);
}
Gl.ShaderSource(shader, new [] { source });
Gl.CompileShader(shader);
#if DEBUG
Gl.GetShader(shader, ShaderParameterName.CompileStatus, out var compiled);
if (compiled == 0)
{
Gl.GetShader(shader, ShaderParameterName.InfoLogLength, out var logLength);
if (logLength != 0)
{
StringBuilder sb = new StringBuilder();
sb.EnsureCapacity(999); // this is needed due to a rare Mono bug
Gl.GetShaderInfoLog(shader, 999, out int _, sb);
Debug.WriteLine("Sparrow: Error compiling shader: " + sb);
}
Gl.DeleteShader(shader);
return(0);
}
#endif
return(shader);
}
private uint loadShader(string[] shaderString, ShaderType type)
{
uint shaderID = Gl.CreateShader(type);
Gl.ShaderSource(shaderID, shaderString);
Gl.CompileShader(shaderID);
// debuging code
int status;
Gl.GetShader(shaderID, ShaderParameterName.CompileStatus, out status);
if (status == Gl.TRUE)
{
Console.WriteLine(String.Format("shader number {0} creation succeeded", shaderID));
return(shaderID);
}
else if (status == Gl.FALSE)
{
Console.WriteLine(String.Format("shader number {0} creation failed", shaderID));
Gl.GetShader(shaderID, ShaderParameterName.InfoLogLength, out int logLength);
int logMaxLength = 1024;
StringBuilder infoLog = new StringBuilder(logMaxLength);
Gl.GetShaderInfoLog(shaderID, 1024, out int infoLogLength, infoLog);
Console.WriteLine("Errors: \n{0}", infoLog.ToString());
return(0);
}
return(0);
}
public bool CompileShader()
{
int infoLogLenght;
Gl.CompileShader(ShaderID);
Gl.GetShader(ShaderID, ShaderParameterName.CompileStatus, out base.actionStatus);
Gl.GetShader(ShaderID, ShaderParameterName.InfoLogLength, out infoLogLenght);
infoLog = new StringBuilder(string.Format(UNSUCCESSFUL_COMPILATION, ShaderName), infoLogLenght);
infoLog.EnsureCapacity(infoLogLenght);
int x;
if (CompilationStatus == Gl.TRUE)
{
this.isDirty = false;
infoLog.Clear();
infoLog.Append(string.Format(SUCCESSFUL_COMPILATION, ShaderName));
return(true);
}
else
{
Gl.GetShaderInfoLog(ShaderID, 1024, out x, infoLog);
return(false);
}
}
private bool CreateDeviceObjects()
{
// Backup GL state
// but why??
Gl.GetInteger(GetPName.TextureBinding2d, out int lastTexture);
Gl.GetInteger(GetPName.ArrayBufferBinding, out int lastArrayBuffer);
Gl.GetInteger(GetPName.VertexArrayBinding, out int lastVertexArray);
// Create shaders
string shaderSource;
var assembly = Assembly.GetExecutingAssembly();
using (var data = assembly.GetManifestResourceStream("imgui-vertex.glsl"))
using (var stream = new StreamReader(data))
{
shaderSource = stream.ReadToEnd();
}
_vertHandle = Gl.CreateShader(ShaderType.VertexShader);
Gl.ShaderSource(_vertHandle, new string[] { shaderSource });
Gl.CompileShader(_vertHandle);
CheckShader(_vertHandle, "vertex shader");
using (var data = assembly.GetManifestResourceStream("imgui-frag.glsl"))
using (var stream = new StreamReader(data))
{
shaderSource = stream.ReadToEnd();
}
_fragHandle = Gl.CreateShader(ShaderType.FragmentShader);
Gl.ShaderSource(_fragHandle, new string[] { shaderSource });
Gl.CompileShader(_fragHandle);
CheckShader(_fragHandle, "fragment shader");
_shaderHandle = Gl.CreateProgram();
Gl.AttachShader(_shaderHandle, _vertHandle);
Gl.AttachShader(_shaderHandle, _fragHandle);
Gl.LinkProgram(_shaderHandle);
CheckProgram(_shaderHandle, "shader program");
_attribLocationTex = Gl.GetUniformLocation(_shaderHandle, "Texture");
_attribLocationProjMtx = Gl.GetUniformLocation(_shaderHandle, "ProjMtx");
_attribLocationVtxPos = Gl.GetAttribLocation(_shaderHandle, "Position");
_attribLocationVtxUV = Gl.GetAttribLocation(_shaderHandle, "UV");
_attribLocationVtxColor = Gl.GetAttribLocation(_shaderHandle, "Color");
_vboHandle = Gl.GenBuffer();
_elementsHandle = Gl.GenBuffer();
CreateFontsTexture();
// Restore modified GL state
Gl.BindTexture(TextureTarget.Texture2d, (uint)lastTexture);
Gl.BindBuffer(BufferTarget.ArrayBuffer, (uint)lastArrayBuffer);
Gl.BindVertexArray((uint)lastVertexArray);
return(true);
}
public Shader(ShaderType type, string path)
{
GlShader = Gl.CreateShader(type);
Gl.ShaderSource(GlShader, new[] { File.ReadAllText(path) });
Gl.CompileShader(GlShader);
Validate();
}
protected uint CompileShader(string[] shaderSource, ShaderType shaderType, out int compiled)
{
uint shader = Gl.CreateShader(shaderType);
Gl.ShaderSource(shader, shaderSource);
Gl.CompileShader(shader);
Gl.GetShader(shader, ShaderParameterName.CompileStatus, out compiled);
return(shader);
}
private uint CreateProgramUniform(string[] srcVertex, string[] srcFragment)
{
uint shaderVertex = 0, shaderFragment = 0, program = 0;
try {
int compileStatus;
shaderVertex = Gl.CreateShader(ShaderType.VertexShader);
Gl.ShaderSource(shaderVertex, srcVertex);
Gl.CompileShader(shaderVertex);
Gl.GetShader(shaderVertex, ShaderParameterName.CompileStatus, out compileStatus);
if (compileStatus == 0)
{
throw new InvalidOperationException("unable to compiler vertex shader: " + GetShaderInfoLog(shaderVertex));
}
shaderFragment = Gl.CreateShader(ShaderType.FragmentShader);
Gl.ShaderSource(shaderFragment, srcFragment);
Gl.CompileShader(shaderFragment);
Gl.GetShader(shaderFragment, ShaderParameterName.CompileStatus, out compileStatus);
if (compileStatus == 0)
{
throw new InvalidOperationException("unable to compiler fragment shader: " + GetShaderInfoLog(shaderFragment));
}
program = Gl.CreateProgram();
Gl.AttachShader(program, shaderVertex);
Gl.AttachShader(program, shaderFragment);
Gl.LinkProgram(program);
Gl.GetProgram(program, ProgramProperty.LinkStatus, out compileStatus);
if (compileStatus == 0)
{
throw new InvalidOperationException("unable to link program");
}
Gl.UseProgram(program);
} catch {
if (shaderVertex != 0)
{
Gl.DeleteShader(shaderVertex);
}
if (shaderFragment != 0)
{
Gl.DeleteShader(shaderFragment);
}
if (shaderFragment != 0)
{
Gl.DeleteProgram(program);
}
throw;
}
return(program);
}
/// <summary>
/// Compiles a shader, which can be either vertex, fragment or geometry.
/// </summary>
/// <param name="source">Specifies the source code of the shader object.</param>
/// <param name="type">Specifies the type of shader to create (either vertex, fragment or geometry).</param>
public Shader(ShaderType type, string source)
{
this.ShaderType = type;
this.ShaderID = Gl.CreateShader((int)type);
GLShortcut.ShaderSource(ShaderID, source);
Gl.CompileShader(ShaderID);
GetParams(source);
}
public Shader(ShaderType type, string source)
{
var shaderLanguageVersion = Gl.GetString(StringName.ShadingLanguageVersion);
if (Environment.OSVersion.Platform == PlatformID.MacOSX)
{
source = string.Format("#version {0}\n{1}", shaderLanguageVersion.Replace(".", ""), source);
}
_type = type;
_source = source;
// Compile
_shaderHandle = Gl.CreateShader(type);
Gl.ShaderSource(_shaderHandle, new string[] { _source });
Gl.CompileShader(_shaderHandle);
// Get the log
int logLen;
Gl.GetShader(_shaderHandle, ShaderParameterName.InfoLogLength, out logLen);
// Anything in the log?
string log = "n/a";
if (logLen > 0)
{
var infolog = new StringBuilder(logLen + 10);
int infologLength;
Gl.GetShaderInfoLog(_shaderHandle, logLen + 10, out infologLength, infolog);
log = infolog.ToString();
if (!string.IsNullOrEmpty(log))
{
Console.WriteLine("Shader compile log:\n{0}", log);
}
}
// Success?
int status;
Gl.GetShader(_shaderHandle, ShaderParameterName.CompileStatus, out status);
if (status != 0) // Returns GL_TRUE if successful
{
return;
}
// Delete it
Gl.DeleteShader(_shaderHandle);
_shaderHandle = 0;
throw new InvalidOperationException(string.Format("Compilation of shader failed - {0}", log));
}
private uint GetFragmentShader()
{
string[] text = File.ReadAllLines($"{_rootPath}{FragmentShaderPath}{_shaderSelector}.glsl")
.Select(s => s + "\n").ToArray();;
uint shader = Gl.CreateShader(ShaderType.FragmentShader);
Gl.ShaderSource(shader, text);
Gl.CompileShader(shader);
VerifyCompiled(shader);
return(shader);
}
private void RenderControl_ContextCreated(object sender, GlControlEventArgs e)
{
// Update Form caption
Text = String.Format("Hello triangle with ANGLE (Version: {0})", Gl.GetString(StringName.Version));
// Create resources
StringBuilder infolog = new StringBuilder(1024);
int infologLength;
int compiled;
infolog.EnsureCapacity(1024);
// Vertex shader
uint vertexShader = Gl.CreateShader(ShaderType.VertexShader);
Gl.ShaderSource(vertexShader, _Es2_ShaderVertexSource);
Gl.CompileShader(vertexShader);
Gl.GetShader(vertexShader, ShaderParameterName.CompileStatus, out compiled);
if (compiled == 0)
{
Gl.GetShaderInfoLog(vertexShader, 1024, out infologLength, infolog);
}
// Fragment shader
uint fragmentShader = Gl.CreateShader(ShaderType.FragmentShader);
Gl.ShaderSource(fragmentShader, _Es2_ShaderFragmentSource);
Gl.CompileShader(fragmentShader);
Gl.GetShader(fragmentShader, ShaderParameterName.CompileStatus, out compiled);
if (compiled == 0)
{
Gl.GetShaderInfoLog(fragmentShader, 1024, out infologLength, infolog);
}
// Program
_Es2_Program = Gl.CreateProgram();
Gl.AttachShader(_Es2_Program, vertexShader);
Gl.AttachShader(_Es2_Program, fragmentShader);
Gl.LinkProgram(_Es2_Program);
int linked;
Gl.GetProgram(_Es2_Program, ProgramProperty.LinkStatus, out linked);
if (linked == 0)
{
Gl.GetProgramInfoLog(_Es2_Program, 1024, out infologLength, infolog);
}
_Es2_Program_Location_uMVP = Gl.GetUniformLocation(_Es2_Program, "uMVP");
_Es2_Program_Location_aPosition = Gl.GetAttribLocation(_Es2_Program, "aPosition");
_Es2_Program_Location_aColor = Gl.GetAttribLocation(_Es2_Program, "aColor");
}
private void Es2_ContextCreated()
{
int compilationStatus;
// Vertex shader
uint vertexShader = Gl.CreateShader(ShaderType.VertexShader);
Gl.ShaderSource(vertexShader, _Es2_ShaderVertexSource);
Gl.CompileShader(vertexShader);
// Fragment shader
uint fragmentShader = Gl.CreateShader(ShaderType.FragmentShader);
Gl.ShaderSource(fragmentShader, _Es2_ShaderFragmentSource);
Gl.CompileShader(fragmentShader);
// Program
_Es2_Program = Gl.CreateProgram();
Gl.AttachShader(_Es2_Program, vertexShader);
Gl.AttachShader(_Es2_Program, fragmentShader);
Gl.LinkProgram(_Es2_Program);
// Check for linking errors
int lStatus;
Gl.GetProgram(_Es2_Program, Gl.LINK_STATUS, out lStatus);
if (lStatus != Gl.TRUE)
{
const int MaxInfoLength = 4096;
StringBuilder logInfo = new StringBuilder(MaxInfoLength);
int logLength;
// Obtain compilation log
Gl.GetProgramInfoLog(_Es2_Program, MaxInfoLength, out logLength, logInfo);
// Stop link process
StringBuilder sb = new StringBuilder(logInfo.Capacity);
string[] compilerLogLines = logInfo.ToString().Split(new char[] { '\n' }, StringSplitOptions.RemoveEmptyEntries);
foreach (string logLine in compilerLogLines)
{
sb.AppendLine(" $ " + logLine);
}
throw new InvalidOperationException(sb.ToString());
}
_Es2_Program_Location_uMVP = Gl.GetUniformLocation(_Es2_Program, "uMVP");
_Es2_Program_Location_aPosition = Gl.GetAttribLocation(_Es2_Program, "aPosition");
_Es2_Program_Location_aColor = Gl.GetAttribLocation(_Es2_Program, "aColor");
}
/// <summary>
/// Creates the shader and returns the handle to it
/// </summary>
/// <param name="vertexSource"></param>
/// <param name="fragmentSource"></param>
/// <returns></returns>
private static uint CreateShader(string[] vertexSource, string[] fragmentSource)
{
StringBuilder infolog = new StringBuilder(1024);
int infoLogLength;
// Create a shader id
uint programid = Gl.CreateProgram();
uint vertexId = Gl.CreateShader(ShaderType.VertexShader);
uint fragmentId = Gl.CreateShader(ShaderType.FragmentShader);
// Create shader from source
Gl.ShaderSource(vertexId, vertexSource);
Gl.ShaderSource(fragmentId, fragmentSource);
int compileStatus = 0;
// Compile the shaders
Gl.CompileShader(vertexId);
Gl.GetShader(vertexId, ShaderParameterName.CompileStatus, out compileStatus);
if (compileStatus == 0)
{
Gl.GetShaderInfoLog(vertexId, 1024, out infoLogLength, infolog);
}
Gl.CompileShader(fragmentId);
Gl.GetShader(fragmentId, ShaderParameterName.CompileStatus, out compileStatus);
if (compileStatus == 0)
{
Gl.GetShaderInfoLog(fragmentId, 1024, out infoLogLength, infolog);
}
if (infolog.Length > 0)
{
Debug.Log("Could not compile shaders " + infolog, Debug.DebugLayer.Shaders, Debug.DebugLevel.Warning);
}
// Attach the shaders to the shader program
Gl.AttachShader(programid, vertexId);
Gl.AttachShader(programid, fragmentId);
// Link the shaders
Gl.LinkProgram(programid);
// Validate the shader program
Gl.ValidateProgram(programid);
Debug.Log("Shaders Compiled: Id " + vertexId + ":" + fragmentId, Debug.DebugLayer.Shaders, Debug.DebugLevel.Information);
return(programid);
}
private void RenderControl_ContextCreated_ES(object sender, GlControlEventArgs e)
{
StringBuilder infolog = new StringBuilder(1024);
int infologLength;
int compiled;
infolog.EnsureCapacity(1024);
// Vertex shader
uint vertexShader = Gl.CreateShader(Gl.VERTEX_SHADER);
Gl.ShaderSource(vertexShader, _Es2_ShaderVertexSource);
Gl.CompileShader(vertexShader);
Gl.GetShader(vertexShader, Gl.COMPILE_STATUS, out compiled);
if (compiled == 0)
{
Gl.GetShaderInfoLog(vertexShader, 1024, out infologLength, infolog);
}
// Fragment shader
uint fragmentShader = Gl.CreateShader(Gl.FRAGMENT_SHADER);
Gl.ShaderSource(fragmentShader, _Es2_ShaderFragmentSource);
Gl.CompileShader(fragmentShader);
Gl.GetShader(fragmentShader, Gl.COMPILE_STATUS, out compiled);
if (compiled == 0)
{
Gl.GetShaderInfoLog(fragmentShader, 1024, out infologLength, infolog);
}
// Program
Program_Shader = Gl.CreateProgram();
Gl.AttachShader(Program_Shader, vertexShader);
Gl.AttachShader(Program_Shader, fragmentShader);
Gl.LinkProgram(Program_Shader);
int linked;
Gl.GetProgram(Program_Shader, Gl.LINK_STATUS, out linked);
if (linked == 0)
{
Gl.GetProgramInfoLog(Program_Shader, 1024, out infologLength, infolog);
}
Program_Location_uProjection = Gl.GetUniformLocation(Program_Shader, "uProjection");
Program_Location_uView = Gl.GetUniformLocation(Program_Shader, "uView");
Program_Location_uModel = Gl.GetUniformLocation(Program_Shader, "uModel");
Program_Location_aPosition = Gl.GetAttribLocation(Program_Shader, "aPosition");
Program_Location_aColor = Gl.GetAttribLocation(Program_Shader, "aColor");
}
private void CompileShaders(string vertexCode, string fragmentCode)
{
uint vertex, fragment;
int success;
StringBuilder infoLog = new StringBuilder(512);
// Vertex Shader
vertex = Gl.CreateShader(Gl.VERTEX_SHADER);
Gl.ShaderSource(vertex, new[] { vertexCode });
Gl.CompileShader(vertex);
// Print compile errors if any
Gl.GetShader(vertex, Gl.COMPILE_STATUS, out success);
if (success == 0)
{
int length;
Gl.GetShaderInfoLog(vertex, 512, out length, infoLog);
MessageBox.Show(Render.Program.bithack3D, "ERROR::SHADER::VERTEX::COMPILATION_FAILED\n" + infoLog.ToString());
Render.Program.bithack3D.BeginInvoke(new MethodInvoker(Render.Program.bithack3D.Close));
}
// Fragment Shader
fragment = Gl.CreateShader(Gl.FRAGMENT_SHADER);
Gl.ShaderSource(fragment, new[] { fragmentCode });
Gl.CompileShader(fragment);
// Print compile errors if any
Gl.GetShader(fragment, Gl.COMPILE_STATUS, out success);
if (success == 0)
{
int length;
Gl.GetShaderInfoLog(vertex, 512, out length, infoLog);
MessageBox.Show(Render.Program.bithack3D, "ERROR::SHADER::FRAGMENT::COMPILATION_FAILED\n" + infoLog.ToString());
Render.Program.bithack3D.BeginInvoke(new MethodInvoker(Render.Program.bithack3D.Close));
}
// Shader Program
this.Program = Gl.CreateProgram();
Gl.AttachShader(this.Program, vertex);
Gl.AttachShader(this.Program, fragment);
Gl.LinkProgram(this.Program);
// Print linking errors if any
Gl.GetProgram(this.Program, Gl.LINK_STATUS, out success);
if (success == 0)
{
int length;
Gl.GetProgramInfoLog(this.Program, 512, out length, infoLog);
MessageBox.Show(Render.Program.bithack3D, "ERROR::SHADER::PROGRAM::LINKING_FAILED\n" + infoLog.ToString());
Render.Program.bithack3D.BeginInvoke(new MethodInvoker(Render.Program.bithack3D.Close));
}
// Delete the shaders as they're linked into our program now and no longer necessery
Gl.DeleteShader(vertex);
Gl.DeleteShader(fragment);
}
private static uint CreateShader(uint type, string source)
{
var ret = Gl.CreateShader(type);
Gl.ShaderSource(ret, source);
Gl.CompileShader(ret);
var success = new int[1];
Gl.GetShader(ret, Gl.GL_COMPILE_STATUS, success);
var str = new StringBuilder(1000);
Gl.GetShaderInfoLog(ret, 1000, IntPtr.Zero, str);
return(ret);
}
private static void Initialize()
{
// Create resources
StringBuilder infolog = new StringBuilder(1024);
int infologLength;
int compiled;
infolog.EnsureCapacity(1024);
// Vertex shader
uint vertexShader = Gl.CreateShader(ShaderType.VertexShader);
Gl.ShaderSource(vertexShader, _Es2_ShaderVertexSource);
Gl.CompileShader(vertexShader);
Gl.GetShader(vertexShader, ShaderParameterName.CompileStatus, out compiled);
if (compiled == 0)
{
Gl.GetShaderInfoLog(vertexShader, 1024, out infologLength, infolog);
}
// Fragment shader
uint fragmentShader = Gl.CreateShader(ShaderType.FragmentShader);
Gl.ShaderSource(fragmentShader, _Es2_ShaderFragmentSource);
Gl.CompileShader(fragmentShader);
Gl.GetShader(fragmentShader, ShaderParameterName.CompileStatus, out compiled);
if (compiled == 0)
{
Gl.GetShaderInfoLog(fragmentShader, 1024, out infologLength, infolog);
}
// Program
_Es2_Program = Gl.CreateProgram();
Gl.AttachShader(_Es2_Program, vertexShader);
Gl.AttachShader(_Es2_Program, fragmentShader);
Gl.LinkProgram(_Es2_Program);
int linked;
Gl.GetProgram(_Es2_Program, Gl.LINK_STATUS, out linked);
if (linked == 0)
{
Gl.GetProgramInfoLog(_Es2_Program, 1024, out infologLength, infolog);
}
_Es2_Program_Location_uMVP = Gl.GetUniformLocation(_Es2_Program, "uMVP");
_Es2_Program_Location_aPosition = Gl.GetAttribLocation(_Es2_Program, "aPosition");
_Es2_Program_Location_aColor = Gl.GetAttribLocation(_Es2_Program, "aColor");
}