public override void Render(Mesh mesh, Camera camera, Matrix4x4[] matrices)
{
Bind();
VertexArray.Bind();
PositionBuffer.Bind();
PositionBuffer.SetData(mesh.Attributes["POSITION"].BufferData);
NormalBuffer.Bind();
NormalBuffer.SetData(mesh.Attributes["NORMAL"].BufferData);
MatrixBuffer.Bind();
MatrixBuffer.SetData(matrices);
var projectionCast = camera.GetComponent <CameraComponent>().Projection().Cast();
var projectionViewLocation = GL.GetUniformLocation(ProgramId, "uViewProjection");
GL.ProgramUniformMatrix4(ProgramId, projectionViewLocation, false, ref projectionCast);
var colorLocation = GL.GetUniformLocation(ProgramId, "uColor");
var colorCast = Color.CastRendering();
GL.ProgramUniform3(ProgramId, colorLocation, ref colorCast);
GL.DrawElementsInstancedBaseInstance(PrimitiveType.Triangles, mesh.Attributes["INDEX"].BufferData.Length / 2, DrawElementsType.UnsignedShort, mesh.Attributes["INDEX"].BufferData, matrices.Length, 0);
}
public override void Render(Mesh mesh, Camera camera, Matrix4x4[] matrices)
{
Bind();
VertexArray.Bind();
PositionBuffer.Bind();
PositionBuffer.SetData(mesh.Attributes["POSITION"].BufferData);
NormalBuffer.Bind();
NormalBuffer.SetData(mesh.Attributes["NORMAL"].BufferData);
ColorBuffer.Bind();
ColorBuffer.SetData(mesh.Attributes["COLOR_0"].BufferData);
MatrixBuffer.Bind();
MatrixBuffer.SetData(matrices);
Vector3 lightInvDir = new Vector3(0.5f, 2, 2);
// Compute the MVP matrix from the light's point of view
Matrix4x4 depthProjectionMatrix = Matrix4x4.CreateOrthographicOffCenter(-10, 10, -10, 10, -10, 20);
Matrix4x4 depthViewMatrix = Matrix4x4.CreateLookAt(lightInvDir, new Vector3(0, 0, 0), Vector3.UnitY);
Matrix4x4 depthModelMatrix = Matrix4x4.Identity;;
Matrix4x4 depthMVP = depthProjectionMatrix * depthViewMatrix * depthModelMatrix;
var projectionCast = camera.GetComponent <CameraComponent>().Projection().Cast();
var projectionViewLocation = GL.GetUniformLocation(ProgramId, "uViewProjection");
GL.ProgramUniformMatrix4(ProgramId, projectionViewLocation, false, ref projectionCast);
var depthProjectionCast = depthMVP.Cast();
var depthProjectionViewLocation = GL.GetUniformLocation(ProgramId, "uDepthMVP");
GL.ProgramUniformMatrix4(ProgramId, depthProjectionViewLocation, false, ref depthProjectionCast);
Matrix4x4 biasMatrix = new Matrix4x4(
0.5f, 0.0f, 0.0f, 0.0f,
0.0f, 0.5f, 0.0f, 0.0f,
0.0f, 0.0f, 0.5f, 0.0f,
0.5f, 0.5f, 0.5f, 1.0f
);
Matrix4x4 depthBiasMVP = biasMatrix * depthMVP;
var depthBiasCast = depthBiasMVP.Cast();
var depthBiasLocation = GL.GetUniformLocation(ProgramId, "uDepthBias");
GL.ProgramUniformMatrix4(ProgramId, depthBiasLocation, false, ref depthBiasCast);
var colorLocation = GL.GetUniformLocation(ProgramId, "uColor");
var colorCast = Color.CastRendering();
GL.ProgramUniform3(ProgramId, colorLocation, ref colorCast);
GL.DrawElementsInstancedBaseInstance(PrimitiveType.Triangles, mesh.Attributes["INDEX"].BufferData.Length / 2, DrawElementsType.UnsignedShort, mesh.Attributes["INDEX"].BufferData, matrices.Length, 0);
}
public BasicShadedColoredMaterial()
{
var vertexShader = new GlShader(ShaderType.VertexShader);
vertexShader.LoadSource(VertexShaderSource);
var fragmentShader = new GlShader(ShaderType.FragmentShader);
fragmentShader.LoadSource(FragmentShaderSource);
Bind();
LoadShader(vertexShader);
LoadShader(fragmentShader);
Link();
PositionBuffer = new GlBuffer(BufferTarget.ArrayBuffer);
PositionBuffer.Bind();
NormalBuffer = new GlBuffer(BufferTarget.ArrayBuffer);
NormalBuffer.Bind();
ColorBuffer = new GlBuffer(BufferTarget.ArrayBuffer);
ColorBuffer.Bind();
MatrixBuffer = new GlBuffer(BufferTarget.ArrayBuffer);
MatrixBuffer.Bind();
var positionBufferLayout = new GlBufferLayout();
positionBufferLayout.Add(VertexAttribPointerType.Float, 3); //Vector3 3 floats
var normalBufferLayout = new GlBufferLayout();
normalBufferLayout.Add(VertexAttribPointerType.Float, 3);
var colorBufferLayout = new GlBufferLayout();
colorBufferLayout.Add(VertexAttribPointerType.Float, 4);
var matrixBufferLayout = new GlBufferLayout();
matrixBufferLayout.Add(VertexAttribPointerType.Float, 4, divisor: 1); //Matrix 16 floats
matrixBufferLayout.Add(VertexAttribPointerType.Float, 4, divisor: 1);
matrixBufferLayout.Add(VertexAttribPointerType.Float, 4, divisor: 1);
matrixBufferLayout.Add(VertexAttribPointerType.Float, 4, divisor: 1);
VertexArray = new GlVertexArray();
VertexArray.AddBuffer(PositionBuffer, positionBufferLayout);
VertexArray.AddBuffer(NormalBuffer, normalBufferLayout);
VertexArray.AddBuffer(ColorBuffer, colorBufferLayout);
VertexArray.AddBuffer(MatrixBuffer, matrixBufferLayout);
}