/// <summary>Function called to update items per frame on the layer.</summary>
protected override void OnUpdate()
{
if (Camera.NeedsUpdate)
{
if (Camera.ProjectionChanged)
{
Camera.GetProjectionMatrix(out DX.Matrix projectionMatrix);
SetProjection(ref projectionMatrix);
}
if (Camera.ViewChanged)
{
Camera.GetViewMatrix(out DX.Matrix viewMatrix);
SetView(ref viewMatrix);
}
}
Camera.GetViewMatrix(out DX.Matrix view);
_drawPlanets.Clear();
for (int i = 0; i < Planets.Count; ++i)
{
Planet planet = Planets[i];
planet.Update();
DX.RectangleF aabb = DX.RectangleF.Empty;
for (int j = 0; j < planet.Layers.Count; ++j)
{
PlanetaryLayer layer = planet.Layers[j];
DX.Vector3 originalPosition = layer.Mesh.Position;
UpdateMeshWorldMatrix(layer.Mesh);
DX.RectangleF meshAabb = layer.Mesh.GetAABB();
if (!meshAabb.IsEmpty)
{
if (aabb.IsEmpty)
{
aabb = meshAabb;
}
else
{
aabb = DX.RectangleF.Union(meshAabb, aabb);
}
}
layer.Mesh.Position = originalPosition;
}
// Cull the planet if it's outside of our view.
if (Camera.ViewableRegion.Intersects(aabb))
{
_drawPlanets.Add(planet);
}
}
}
/// <summary>
/// Function to load the resources for the layer.
/// </summary>
public override void LoadResources()
{
_drawCalls = new List <GorgonDrawIndexCall>();
BuildConstantBuffers();
for (int i = 0; i < Planets.Count; ++i)
{
Planet planet = Planets[i];
for (int j = 0; j < planet.Layers.Count; ++j)
{
PlanetaryLayer layer = planet.Layers[j];
GorgonVertexShader vertexShader = _resources.VertexShaders[layer.Mesh.Material.VertexShader];
GorgonPixelShader pixelShader = _resources.PixelShaders[layer.Mesh.Material.PixelShader];
// Create our vertex layout now.
if (_vertexLayout == null)
{
_vertexLayout = _vertexLayout = GorgonInputLayout.CreateUsingType <Vertex3D>(_graphics, vertexShader);
}
// Set up a pipeline state for the mesh.
GorgonPipelineState pipelineState = _stateBuilder.Clear()
.PixelShader(pixelShader)
.VertexShader(vertexShader)
.BlendState(layer.Mesh.Material.BlendState)
.PrimitiveType(PrimitiveType.TriangleList)
.Build();
_drawCallBuilder.Clear()
.PipelineState(pipelineState)
.IndexBuffer(layer.Mesh.IndexBuffer, 0, layer.Mesh.IndexCount)
.VertexBuffer(_vertexLayout, new GorgonVertexBufferBinding(layer.Mesh.VertexBuffer, Vertex3D.Size))
.ConstantBuffer(ShaderType.Vertex, _viewProjectionBuffer)
.ConstantBuffer(ShaderType.Vertex, _worldBuffer, 1)
.ConstantBuffer(ShaderType.Pixel, _cameraBuffer)
.ConstantBuffer(ShaderType.Pixel, _lightBuffer, 1)
.ConstantBuffer(ShaderType.Pixel, _materialBuffer, 2);
(int startTexture, int textureCount) = layer.Mesh.Material.Textures.GetDirtyItems();
for (int k = startTexture; k < startTexture + textureCount; ++k)
{
GorgonTexture2DView texture = _resources.Textures[layer.Mesh.Material.Textures[k]];
_drawCallBuilder.ShaderResource(ShaderType.Pixel, texture, k);
// We should have this in the material, but since we know what we've got here, this will be fine.
_drawCallBuilder.SamplerState(ShaderType.Pixel, GorgonSamplerState.Wrapping, k);
}
_drawCalls.Add(_drawCallBuilder.Build());
}
}
UpdateLightTransforms();
}
/// <summary>
/// Function to render the layer data.
/// </summary>
public override void Render()
{
int drawCallIndex = 0;
if (_drawPlanets.Count == 0)
{
return;
}
// Apply active lights
Array.Clear(_lightData, 0, _lightData.Length);
for (int i = 0; i < ActiveLights.Count.Min(_lightData.Length); ++i)
{
Light light = ActiveLights[i];
if (light == null)
{
continue;
}
_lightData[i] = new LightData
{
SpecularPower = light.SpecularPower,
Attenuation = light.Attenuation,
LightColor = light.Color,
LightPosition = new DX.Vector3(light.Position.X, light.Position.Y, -light.Position.Z),
SpecularColor = GorgonColor.White,
Intensity = light.Intensity
};
}
if (ActiveLights.Count > 0)
{
_lightBuffer.Buffer.SetData(_lightData);
}
for (int i = 0; i < _drawPlanets.Count; ++i)
{
Planet planet = _drawPlanets[i];
for (int j = 0; j < planet.Layers.Count; ++j)
{
PlanetaryLayer layer = planet.Layers[j];
MoveableMesh mesh = layer.Mesh;
UpdateMaterial(mesh);
UpdateWorldTransform(mesh);
_graphics.Submit(_drawCalls[drawCallIndex++]);
}
}
}
