public void Draw(Matrix4 fov, Matrix4 cameraView)
{
//Logging.Debug("Entering background draw.");
if (!HasBackground)
{
return;
}
//Logging.Debug("We have a background.");
_backgroundProgram.Use();
//Logging.Debug("Set background program.");
GL.ActiveTexture(TextureUnit.Texture0);
//Logging.Debug("Set active texture.");
GlUtility.BindTexture(_backgroundTexture);
//Logging.Debug("Bound background texture.");
_backgroundProgram["projection_matrix"].SetValue(fov);
_backgroundProgram["view_matrix"].SetValue(cameraView);
//Logging.Debug("Bound background uniforms.");
GlUtility.BindBuffer(_points);
//Logging.Debug("Bound background points.");
//vertexPosition
GL.VertexAttribPointer(ShaderProgram.VertexPosition, 3, _points.PointerType, false, 5 * Marshal.SizeOf(typeof(float)), IntPtr.Zero);
GL.EnableVertexAttribArray(ShaderProgram.VertexPosition);
//Logging.Debug("Bound background positions to array.");
GL.DisableVertexAttribArray(ShaderProgram.VertexColor);
//Logging.Debug("Disabled VertexColor array.");
GL.DisableVertexAttribArray(ShaderProgram.VertexSize);
//textureCoords
GL.VertexAttribPointer(ShaderProgram.TextureCoords, 2, _points.PointerType, false, 5 * Marshal.SizeOf(typeof(float)), Vector3.SizeInBytes);
GL.EnableVertexAttribArray(ShaderProgram.TextureCoords);
//Logging.Debug("Bound background texture coords to array.");
GlUtility.BindBuffer(_backgroundElements);
GL.DrawElements(PrimitiveType.Triangles, 6, DrawElementsType.UnsignedInt, IntPtr.Zero);
//Logging.Debug("Exit background draw.");
}
public void Draw(ShaderProgram program)
{
//Logging.Debug("Entering Draw.");
if (_points.Count == 0)
{
//Logging.Debug("Exiting Draw.");
return;
}
//program["pointSize"].SetValue((float)PixelSize);
VBO <float> points = new VBO <float>(_points.ToArray());
//Logging.Debug("Created VBO.");
GlUtility.BindBuffer(points);
//Logging.Debug("Buffer Bound.");
GL.VertexAttribPointer(ShaderProgram.VertexPosition, 3, VertexAttribPointerType.Float, false, EightFloatDataSize, IntPtr.Zero);
GL.EnableVertexAttribArray(ShaderProgram.VertexPosition);
//Logging.Debug("Point pointer set.");
GL.VertexAttribPointer(ShaderProgram.VertexColor, 4, VertexAttribPointerType.Float, false, EightFloatDataSize, Vector3.SizeInBytes);
GL.EnableVertexAttribArray(ShaderProgram.VertexColor);
GL.VertexAttribPointer(ShaderProgram.VertexSize, 1, VertexAttribPointerType.Float, false, EightFloatDataSize, Vector3.SizeInBytes + Vector4.SizeInBytes);
GL.EnableVertexAttribArray(ShaderProgram.VertexSize);
GL.DisableVertexAttribArray(ShaderProgram.TextureCoords);
//Logging.Debug("Color pointer set.");
//Logging.Debug("Beginning draw.");
// draw the points
GL.DrawArrays(PrimitiveType.Points, 0, points.Count / 8);
//Logging.Debug("Draw completed for shape.");
points.Dispose();
//Logging.Debug("VBO Disposed.");
//Logging.Debug("Exiting Draw.");
}