public override void EarlyRender3D()
{
VAO.Bind();
Cubemap.Bind();
GL.DepthMask(false);
CubemapShader.Use();
var view = ECSScene.Camera.View();
var viewWithoutTrans = new Matrix4(new Matrix3(view));
CubemapShader.UniformMatrix4("View", ref viewWithoutTrans);
var proj = ECSScene.Camera.Projection();
CubemapShader.UniformMatrix4("Projection", ref proj);
CubemapShader.Uniform1i("Cubemap", 0);
if (RenderCubemaps)
{
GL.DrawArrays(PrimitiveType.Triangles, 0, 36);
}
GL.DepthMask(true);
GL.BindVertexArray(0);
}
public override void Create()
{
VAO = new("Cubemap VAO");
VBO = new("Cubemap VBO");
VAO.Bind();
VBO.Bind(BufferTarget.ArrayBuffer);
VBO.Data(skyboxVertices, BufferUsageHint.DynamicDraw);
var VS = File.ReadAllText("EngineResources/Shaders/Cubemap/cubemap.vert");
var FS = File.ReadAllText("EngineResources/Shaders/Cubemap/cubemap.frag");
var VP = new GLShader(VS, GLShaderType.Vertex);
var FP = new GLShader(FS, GLShaderType.Fragment);
CubemapShader = new GLShaderProgram()
.Label("Cubemap Shader")
.Attach(VP)
.Attach(FP)
.Link();
GL.EnableVertexAttribArray(0);
GL.VertexAttribPointer(0, 3, VertexAttribPointerType.Float, false, 3 * sizeof(float), 0);
GL.BindVertexArray(0);
}
private unsafe void SetUp()
{
VAO = new("Mesh VAO");
VBO = new("Mesh VBO");
EBO = new("Mesh EBO");
VAO.Bind();
VBO.Bind(BufferTarget.ArrayBuffer);
// Buffer the vertex data into the VBO.
var verarr = CollectionsMarshal.AsSpan(Vertices);
GL.BufferData(BufferTarget.ArrayBuffer, verarr.Length * sizeof(Vertex), ref verarr[0], BufferUsageHint.StaticDraw);
EBO.Bind(BufferTarget.ElementArrayBuffer);
// Buffer the element array into the EBO.
var indarr = CollectionsMarshal.AsSpan(Indices);
GL.BufferData(BufferTarget.ElementArrayBuffer, indarr.Length * sizeof(uint), ref indarr[0], BufferUsageHint.StaticDraw);
SetupPointers();
GL.BindVertexArray(0);
}
public void Draw()
{
VAO.Bind();
GL.Enable(EnableCap.DepthTest);
GL.DrawElements(BeginMode.Triangles, Indices.Count, DrawElementsType.UnsignedInt, 0);
GL.BindVertexArray(0);
}