public void Render(GraphicsDevice graphicsDevice, GameTime gameTime)
{
if (useEnvironmentMapping)
{
Entity camEnt = ComponentManager.Instance.GetFirstEntityOfType <CameraComponent>();
CameraComponent camComp = ComponentManager.Instance.GetEntityComponent <CameraComponent>(camEnt);
Entity envEnt = ComponentManager.Instance.GetFirstEntityOfType <EnvironmentmappingComponent>();
ModelComponent modelComp = ComponentManager.Instance.GetEntityComponent <ModelComponent>(envEnt);
EnvironmentmappingComponent envComp = ComponentManager.Instance.GetEntityComponent <EnvironmentmappingComponent>(envEnt);
TransformComponent tComp = ComponentManager.Instance.GetEntityComponent <TransformComponent>(envEnt);
CreateCubeMap(ref envComp, graphicsDevice, gameTime);
RasterizerState originalRasterizerState = graphicsDevice.RasterizerState;
RasterizerState rasterizerState = new RasterizerState();
rasterizerState.CullMode = CullMode.None;
graphicsDevice.RasterizerState = rasterizerState;
foreach (ModelMesh mesh in modelComp.model.Meshes)
{
foreach (ModelMeshPart part in mesh.MeshParts)
{
part.Effect = modelComp.effect;
part.Effect.Parameters["World"].SetValue(tComp.World * mesh.ParentBone.Transform * Matrix.CreateScale(new Vector3(20f)));
part.Effect.Parameters["View"].SetValue(camComp.viewMatrix);
part.Effect.Parameters["Projection"].SetValue(camComp.projectionMatrix);
part.Effect.Parameters["SkyboxTexture"].SetValue(envComp.environmentMap);
part.Effect.Parameters["CameraPosition"].SetValue(camComp.position);
part.Effect.Parameters["WorldInverseTranspose"].SetValue(Matrix.Transpose(Matrix.Invert(tComp.World * mesh.ParentBone.Transform)));
}
mesh.Draw();
}
graphicsDevice.RasterizerState = originalRasterizerState;
}
}
public static void CreateCubeMap(ref EnvironmentmappingComponent envComp, GraphicsDevice graphicsDevice, GameTime gameTime)
{
SpriteBatch spriteBatch = new SpriteBatch(graphicsDevice);
Entity camEnt = ComponentManager.Instance.GetFirstEntityOfType <CameraComponent>();
CameraComponent cam = ComponentManager.Instance.GetEntityComponent <CameraComponent>(camEnt);
Matrix camMatrix = new Matrix();
// Render our cube map, once for each cube face( 6 times ).
for (int i = 0; i < 6; i++)
{
// render the scene to all cubemap faces
CubeMapFace cubeMapFace = (CubeMapFace)i;
switch (cubeMapFace)
{
case CubeMapFace.NegativeX:
{
camMatrix = Matrix.CreateLookAt(Vector3.Zero, Vector3.Left, Vector3.Up);
break;
}
case CubeMapFace.NegativeY:
{
camMatrix = Matrix.CreateLookAt(Vector3.Zero, Vector3.Down, Vector3.Forward);
break;
}
case CubeMapFace.NegativeZ:
{
camMatrix = Matrix.CreateLookAt(Vector3.Zero, Vector3.Backward, Vector3.Up);
break;
}
case CubeMapFace.PositiveX:
{
camMatrix = Matrix.CreateLookAt(Vector3.Zero, Vector3.Right, Vector3.Up);
break;
}
case CubeMapFace.PositiveY:
{
camMatrix = Matrix.CreateLookAt(Vector3.Zero, Vector3.Up, Vector3.Backward);
break;
}
case CubeMapFace.PositiveZ:
{
camMatrix = Matrix.CreateLookAt(Vector3.Zero, Vector3.Forward, Vector3.Up);
break;
}
}
// Set the cubemap render target, using the selected face
graphicsDevice.SetRenderTarget(envComp.renderTargetCube, cubeMapFace);
useEnvironmentMapping = false;
SystemManager.Instance.RunAllRenderSystems(graphicsDevice, spriteBatch, gameTime);
useEnvironmentMapping = true;
}
envComp.environmentMap = envComp.renderTargetCube;
graphicsDevice.SetRenderTarget(null);
}
