public static WebGLBuffer CreateArrayBufferWithUsage(this WebGLRenderingContextBase gl, Array items, uint usage)
{
var arrayBuffer = gl.CreateBuffer();
gl.BindBuffer(WebGLRenderingContextBase.ARRAY_BUFFER, arrayBuffer);
gl.BufferData(WebGLRenderingContextBase.ARRAY_BUFFER, items, usage);
return(arrayBuffer);
}
public static WebGLBuffer CreateElementArrayBuffer(this WebGLRenderingContextBase gl, Array items)
{
var elementArrayBuffer = gl.CreateBuffer();
gl.BindBuffer(WebGLRenderingContextBase.ELEMENT_ARRAY_BUFFER, elementArrayBuffer);
gl.BufferData(WebGLRenderingContextBase.ELEMENT_ARRAY_BUFFER, items, WebGLRenderingContextBase.STATIC_DRAW);
gl.BindBuffer(WebGLRenderingContextBase.ELEMENT_ARRAY_BUFFER, null);
return(elementArrayBuffer);
}
public static WebGLBuffer CreateArrayBuffer(this WebGLRenderingContextBase gl, Array items)
{
var arrayBuffer = gl.CreateBuffer();
gl.BindBuffer(WebGLRenderingContextBase.ARRAY_BUFFER, arrayBuffer);
gl.BufferData(WebGLRenderingContextBase.ARRAY_BUFFER, items, WebGLRenderingContextBase.STATIC_DRAW);
gl.BindBuffer(WebGLRenderingContextBase.ARRAY_BUFFER, null);
return(arrayBuffer);
}
public static WebGLShader GetShader(this WebGLRenderingContextBase gl, string shaderSource, uint type)
{
var shader = gl.CreateShader(type);
gl.ShaderSource(shader, shaderSource);
gl.CompileShader(shader);
var message = gl.GetShaderInfoLog(shader);
if (message.Length > 0)
{
var msg = $"Shader Error: {message}";
throw new Exception(msg);
}
return(shader);
}
public static WebGLProgram InitializeShaders(
this WebGLRenderingContextBase gl,
string vertexShaderCode,
string fragmentShaderCode)
{
var shaderProgram = gl.CreateProgram();
var vertexShader = GetShader(gl, vertexShaderCode, WebGLRenderingContextBase.VERTEX_SHADER);
var fragmentShader = GetShader(gl, fragmentShaderCode, WebGLRenderingContextBase.FRAGMENT_SHADER);
gl.AttachShader(shaderProgram, vertexShader);
gl.AttachShader(shaderProgram, fragmentShader);
gl.LinkProgram(shaderProgram);
gl.UseProgram(shaderProgram);
return(shaderProgram);
}
