private async Task <WebGLProgram> InitProgramAsync(WebGLContext gl, string vsSource, string fsSource)
{
var vertexShader = await this.LoadShaderAsync(gl, ShaderType.VERTEX_SHADER, vsSource);
var fragmentShader = await this.LoadShaderAsync(gl, ShaderType.FRAGMENT_SHADER, fsSource);
var program = await gl.CreateProgramAsync();
await gl.AttachShaderAsync(program, vertexShader);
await gl.AttachShaderAsync(program, fragmentShader);
await gl.LinkProgramAsync(program);
await gl.DeleteShaderAsync(vertexShader);
await gl.DeleteShaderAsync(fragmentShader);
if (!await gl.GetProgramParameterAsync <bool>(program, ProgramParameter.LINK_STATUS))
{
string info = await gl.GetProgramInfoLogAsync(program);
throw new Exception("An error occured while linking the program: " + info);
}
u_matrix_location = await _context.GetUniformLocationAsync(program, "u_matrix");
return(program);
}
private async Task InitProgramAsync(WebGLContext gl, string vsSource, string fsSource)
{
var vertexShader = await LoadShaderAsync(gl, ShaderType.VERTEX_SHADER, vsSource);
var fragmentShader = await LoadShaderAsync(gl, ShaderType.FRAGMENT_SHADER, fsSource);
var program = await gl.CreateProgramAsync();
await gl.AttachShaderAsync(program, vertexShader);
await gl.AttachShaderAsync(program, fragmentShader);
await gl.LinkProgramAsync(program);
await gl.DeleteShaderAsync(vertexShader);
await gl.DeleteShaderAsync(fragmentShader);
if (!await gl.GetProgramParameterAsync <bool>(program, ProgramParameter.LINK_STATUS))
{
string info = await gl.GetProgramInfoLogAsync(program);
throw new Exception("An error occured while linking the program: " + info);
}
Console.WriteLine($"shader program : id = {program.Id} , type = {program.WebGLType}");
ShaderProgram = program;
}
public static async Task <ShaderProgram> InitShaderProgram(WebGLContext gl, string vsSource, string fsSource, List <string> attributesNames = null, List <string> uniformsNames = null)
{
var vertexShader = await LoadShaderAsync(gl, ShaderType.VERTEX_SHADER, vsSource);
var fragmentShader = await LoadShaderAsync(gl, ShaderType.FRAGMENT_SHADER, fsSource);
var program = await gl.CreateProgramAsync();
await gl.AttachShaderAsync(program, vertexShader);
await gl.AttachShaderAsync(program, fragmentShader);
await gl.LinkProgramAsync(program);
await gl.DeleteShaderAsync(vertexShader);
await gl.DeleteShaderAsync(fragmentShader);
if (!await gl.GetProgramParameterAsync <bool>(program, ProgramParameter.LINK_STATUS))
{
string info = await gl.GetProgramInfoLogAsync(program);
throw new Exception("An error occured while linking the program: " + info);
}
attributesNames ??= new List <string>();
var attributesDict = new Dictionary <string, int>();
foreach (var attribute in attributesNames)
{
attributesDict.Add(attribute, await gl.GetAttribLocationAsync(program, attribute));
}
uniformsNames ??= new List <string>();
var uniformsDict = new Dictionary <string, WebGLUniformLocation>();
foreach (var uniform in uniformsNames)
{
uniformsDict.Add(uniform, await gl.GetUniformLocationAsync(program, uniform));
}
return(new ShaderProgram(program, gl, attributesDict, uniformsDict));
}
private async Task <WebGLShader> LoadShaderAsync(WebGLContext gl, ShaderType type, string source)
{
var shader = await gl.CreateShaderAsync(type);
await gl.ShaderSourceAsync(shader, source);
await gl.CompileShaderAsync(shader);
if (!await gl.GetShaderParameterAsync <bool>(shader, ShaderParameter.COMPILE_STATUS))
{
string info = await gl.GetShaderInfoLogAsync(shader);
await gl.DeleteShaderAsync(shader);
throw new Exception("An error occured while compiling the shader: " + info);
}
return(shader);
}