public override void ProcessSystem()
{
var camera = EntityWorld.GetActiveCamera();
var viewRect = camera.GetViewRect(1.0f);
var device = _batch.GraphicsDevice;
Vertex3CTN vtx = new Vertex3CTN();
vtx.Color = Color.White;
vtx.Normal = Vector3.Forward;
var origSampleState = _batch.GraphicsDevice.SamplerStates[0];
device.SamplerStates[0] = SamplerState.LinearWrap;
device.BlendState = BlendState.Additive;
device.RasterizerState = RasterizerState.CullNone;
vtx.Position = new Vector3(viewRect.Left, viewRect.Top, 0);
vtx.TextureCoords = _dustTexture.GetUV(viewRect.Left, viewRect.Top);
_quad[0] = vtx;
vtx.Position = new Vector3(viewRect.Left, viewRect.Bottom, 0);
vtx.TextureCoords = _dustTexture.GetUV(viewRect.Left, viewRect.Bottom);
_quad[1] = vtx;
vtx.Position = new Vector3(viewRect.Right, viewRect.Top, 0);
vtx.TextureCoords = _dustTexture.GetUV(viewRect.Right, viewRect.Top);
_quad[2] = vtx;
vtx.Position = new Vector3(viewRect.Right, viewRect.Bottom, 0);
vtx.TextureCoords = _dustTexture.GetUV(viewRect.Right, viewRect.Bottom);
_quad[3] = vtx;
Matrix matrix = Matrix.Identity;
_batch.Begin(effect: camera.SpriteBatchBasicEffect);
_batch.DrawVertices(_dustTexture, _quad, _quadIndices, ref matrix);
_batch.End();
_batch.GraphicsDevice.SamplerStates[0] = origSampleState;
}
public void Draw(SpriteComponent sprite, ref Matrix transform, Color[] colors, Vector3[] normals)
{
Vertex3CTN vtx = new Vertex3CTN();
if (colors == null)
throw new ArgumentException(nameof(colors));
if(normals == null)
throw new ArgumentException(nameof(normals));
var tex = sprite.Texture;
Vector2 texCoordLT = tex.GetUV(sprite.TextureRect.Left, sprite.TextureRect.Top);
Vector2 texCoordBR = tex.GetUV(sprite.TextureRect.Right, sprite.TextureRect.Bottom);
vtx.Position = Vector3.Zero;
vtx.TextureCoords = texCoordLT;
vtx.Color = colors[0];
vtx.Normal = normals[0];
_quadVertices[0] = vtx;
vtx.Position = new Vector3(0, sprite.TextureRect.Height, 0);
vtx.TextureCoords = new Vector2(texCoordLT.X, texCoordBR.Y);
vtx.Color = colors[1];
vtx.Normal = normals[1];
_quadVertices[1] = vtx;
vtx.Position = new Vector3(sprite.TextureRect.Width, 0, 0);
vtx.TextureCoords = new Vector2(texCoordBR.X, texCoordLT.Y);
vtx.Color = colors[2];
vtx.Normal = normals[2];
_quadVertices[2] = vtx;
vtx.Position = new Vector3(sprite.TextureRect.Width, sprite.TextureRect.Height, 0);
vtx.TextureCoords = texCoordBR;
vtx.Color = colors[3];
vtx.Normal = normals[3];
_quadVertices[3] = vtx;
DrawVertices(tex, _quadVertices, _quadIndices, ref transform);
}
public void DrawVertices(Texture2D texture, Vertex3CTN[] vertices, int[] indices, ref Matrix transform)
{
if (_texture == null)
_texture = texture;
if (_texture != texture)
{
RenderImpl(texture);
_vertexCount = 0;
_indexCount = 0;
_texture = texture;
}
EnsureSpace(indices.Length, vertices.Length);
int baseIndex = _vertexCount;
for (int i = 0; i < vertices.Length; i++) {
var vtx = vertices[i];
Vector3.Transform(ref vtx.Position, ref transform, out vtx.Position);
if (Math.Abs(vtx.Position.Z) > float.Epsilon) throw new InvalidProgramException();
_vertices[_vertexCount++] = vtx;
}
for(int i = 0; i < indices.Length; i++)
{
_indices[_indexCount++] = indices[i] + baseIndex;
}
}
