/// <summary>
/// Compiles and links vertex and fragment shaders from strings.
/// </summary>
/// <param name="sVertexShd_">The s vertex SHD_.</param>
/// <param name="sFragmentShd_">The s fragment SHD_.</param>
/// <returns>a new instance</returns>
public static Shader FromStrings(string sVertexShd_, string sFragmentShd_)
{
Shader shd = new Shader();
try
{
shd.Compile(sVertexShd_, ShaderType.VertexShader);
shd.Compile(sFragmentShd_, ShaderType.FragmentShader);
shd.Link();
}
catch(Exception e)
{
shd.Dispose();
throw e;
}
return shd;
}
/// <summary>
/// Compiles and links vertex and fragment shaders from strings.
/// </summary>
/// <param name="sVertexShd_">The s vertex SHD_.</param>
/// <param name="sFragmentShd_">The s fragment SHD_.</param>
/// <returns>a new instance</returns>
public static Shader FromStrings(string sVertexShd_, string sFragmentShd_)
{
Shader shd = new Shader();
try
{
shd.Compile(sVertexShd_, ShaderType.VertexShader);
shd.Compile(sFragmentShd_, ShaderType.FragmentShader);
shd.Link();
}
catch (Exception e)
{
shd.Dispose();
throw e;
}
return(shd);
}
/// <summary>
/// Reads the contents of a file into a string
/// </summary>
/// <param name="shaderFile">path to the shader file</param>
/// <returns>string with contents of shaderFile</returns>
public static string ShaderStringFromFileWithIncludes(string shaderFile)
{
string sShader = null;
if (!File.Exists(shaderFile))
{
throw new FileNotFoundException("Could not find shader file '" + shaderFile + "'");
}
sShader = File.ReadAllText(shaderFile);
//handle includes
string sCurrentPath = Path.GetDirectoryName(shaderFile) + Path.DirectorySeparatorChar; // get path to current shader
string sName = Path.GetFileName(shaderFile);
//split into lines
var lines = sShader.Split(new[] { Environment.NewLine }, StringSplitOptions.None);
var pattern = @"\s*#include\s+" + '"' + "(.+)" + '"';
int lineNr = 1;
foreach (var line in lines)
{
// Search for include pattern (e.g. #include raycast.glsl) (nested not supported)
foreach (Match match in Regex.Matches(line, pattern, RegexOptions.Singleline))
{
string sFullMatch = match.Value;
string sIncludeFileName = match.Groups[1].ToString(); // get the filename to include
string sIncludePath = sCurrentPath + sIncludeFileName; // build path to file
if (!File.Exists(sIncludePath))
{
throw new FileNotFoundException("Could not find include-file '" + sIncludeFileName + "' for shader '" + shaderFile + "'.");
}
string sIncludeShd = File.ReadAllText(sIncludePath); // read include as string
using (var shader = new Shader())
{
try
{
shader.Compile(sIncludeShd, ShaderType.FragmentShader); //test compile include shader
}
catch (ShaderException e)
{
throw new ShaderException("include compile '" + sIncludePath + "'", e.Message);
}
}
sIncludeShd += Environment.NewLine + "#line " + lineNr.ToString() + Environment.NewLine;
sShader = sShader.Replace(sFullMatch, sIncludeShd); // replace #include with actual include
}
++lineNr;
}
return(sShader);
}
/// <summary>
/// Reads the contents of a file into a string
/// </summary>
/// <param name="shaderFile">path to the shader file</param>
/// <returns>string with contents of shaderFile</returns>
public static string ShaderStringFromFileWithIncludes(string shaderFile, bool compileInclude)
{
string sShader = null;
if (!File.Exists(shaderFile))
{
throw new FileNotFoundException("Could not find shader file '" + shaderFile + "'");
}
sShader = File.ReadAllText(shaderFile);
//handle includes
string sCurrentPath = Path.GetDirectoryName(shaderFile) + Path.DirectorySeparatorChar; // get path to current shader
string sName = Path.GetFileName(shaderFile);
//split into lines
var lines = sShader.Split(new[] { Environment.NewLine }, StringSplitOptions.None);
var pattern = @"\s*#include\s+" + '"' + "(.+)" + '"';
int lineNr = 1;
foreach (var line in lines)
{
// Search for include pattern (e.g. #include raycast.glsl) (nested not supported)
foreach (Match match in Regex.Matches(line, pattern, RegexOptions.Singleline))
{
string sFullMatch = match.Value;
string sIncludeFileName = match.Groups[1].ToString(); // get the filename to include
string sIncludePath = sCurrentPath + sIncludeFileName; // build path to file
if (!File.Exists(sIncludePath))
{
throw new FileNotFoundException("Could not find include-file '" + sIncludeFileName + "' for shader '" + shaderFile + "'.");
}
string sIncludeShd = File.ReadAllText(sIncludePath); // read include as string
if (compileInclude)
{
using (var shader = new Shader())
{
try
{
shader.Compile(sIncludeShd, ShaderType.FragmentShader); //test compile include shader
}
catch (ShaderException e)
{
throw new ShaderException(e.Type,
"include compile '" + sIncludePath + "'",
e.Log, sIncludeShd);
}
}
}
sIncludeShd += Environment.NewLine + "#line " + lineNr.ToString() + Environment.NewLine;
sShader = sShader.Replace(sFullMatch, sIncludeShd); // replace #include with actual include
}
++lineNr;
}
return sShader;
}
