public GLShader(GlInterface gl, int shaderType, string source)
{
if (source == null)
{
throw new ArgumentNullException(nameof(source));
}
this.gl = gl;
ShaderId = gl.CreateShader(shaderType);
using (var b = new Utf8Buffer(source))
{
void *[] pstr = new void *[2];
long[] len = new long[2];
pstr[0] = (void *)b.DangerousGetHandle();
len[0] = b.ByteLen;
fixed(void **ppstr = pstr)
fixed(long *plen = len)
gl.ShaderSource(ShaderId, 1, (IntPtr)ppstr, (IntPtr)plen);
}
gl.CompileShader(ShaderId);
int compile_succeeded;
gl.GetShaderiv(ShaderId, GL_COMPILE_STATUS, &compile_succeeded);
if (compile_succeeded == 0)
{
byte[] buf = new byte[MaxErrorLength];
string log;
fixed(byte *pbuf = buf)
{
gl.GetShaderInfoLog(ShaderId, MaxErrorLength, out int log_length, pbuf);
log = Encoding.UTF8.GetString(pbuf, log_length);
}
throw new InvalidOperationException($"Failed to compile shader : {log}");
}
}