void SetSceneConstants()
{
FreeLook freelook = Demo.Freelook;
Vector3 up = MathHelper.Convert(freelook.Up);
sceneConstants.View = Matrix.LookAtLH(MathHelper.Convert(freelook.Eye), MathHelper.Convert(freelook.Target), up);
sceneConstants.Projection = Matrix.PerspectiveFovLH(FieldOfView, AspectRatio, _nearPlane, FarPlane);
sceneConstants.ViewInverse = Matrix.Invert(sceneConstants.View);
Vector3 light = new Vector3(20, 30, 10);
Texture2DDescription depthBuffer = lightDepthTexture.Description;
Matrix lightView = Matrix.LookAtLH(light, Vector3.Zero, up);
Matrix lightProjection = Matrix.OrthoLH(depthBuffer.Width / 8.0f, depthBuffer.Height / 8.0f, _nearPlane, FarPlane);
sceneConstants.LightViewProjection = lightView * lightProjection;
DataStream data;
_immediateContext.MapSubresource(sceneConstantsBuffer, MapMode.WriteDiscard, SharpDX.Direct3D11.MapFlags.None, out data);
Marshal.StructureToPtr(sceneConstants, data.DataPointer, false);
_immediateContext.UnmapSubresource(sceneConstantsBuffer, 0);
data.Dispose();
inverseProjectionVar.SetMatrix(Matrix.Invert(sceneConstants.Projection));
inverseViewVar.SetMatrix(sceneConstants.ViewInverse);
lightInverseViewProjectionVar.SetMatrix(Matrix.Invert(sceneConstants.LightViewProjection));
lightPositionVar.Set(new Vector4(light, 1));
eyePositionVar.Set(new Vector4(MathHelper.Convert(freelook.Eye), 1));
eyeZAxisVar.Set(new Vector4(Vector3.Normalize(MathHelper.Convert(freelook.Target - freelook.Eye)), 1));
float tanHalfFOVY = (float)Math.Tan(FieldOfView * 0.5f);
tanHalfFOVXVar.Set(tanHalfFOVY * AspectRatio);
tanHalfFOVYVar.Set(tanHalfFOVY);
float projectionA = FarPlane / (FarPlane - _nearPlane);
float projectionB = -projectionA * _nearPlane;
projectionAVar.Set(projectionA);
projectionBVar.Set(projectionB);
Matrix overlayMatrix = Matrix.Scaling(info.Width / _width, info.Height / _height, 1.0f);
overlayMatrix *= Matrix.Translation(-(_width - info.Width) / _width, (_height - info.Height) / _height, 0.0f);
overlayViewProjectionVar.SetMatrix(overlayMatrix);
}
void SetSceneConstants()
{
FreeLook freelook = Demo.Freelook;
Vector3 up = MathHelper.Convert(freelook.Up);
sceneConstants.View = Matrix.LookAtLH(MathHelper.Convert(freelook.Eye), MathHelper.Convert(freelook.Target), up);
sceneConstants.Projection = Matrix.PerspectiveFovLH(FieldOfView, AspectRatio, _nearPlane, FarPlane);
sceneConstants.ViewInverse = Matrix.Invert(sceneConstants.View);
Vector3 light = new Vector3(20, 30, 10);
Texture2DDescription depthBuffer = lightDepthTexture.Description;
Matrix lightView = Matrix.LookAtLH(light, Vector3.Zero, up);
Matrix lightProjection = Matrix.OrthoLH(depthBuffer.Width / 8.0f, depthBuffer.Height / 8.0f, _nearPlane, FarPlane);
sceneConstants.LightViewProjection = lightView * lightProjection;
using (var data = sceneConstantsBuffer.Map(MapMode.WriteDiscard))
{
Marshal.StructureToPtr(sceneConstants, data.DataPointer, false);
sceneConstantsBuffer.Unmap();
}
effect2.GetVariableByName("InverseProjection").AsMatrix().SetMatrix(Matrix.Invert(sceneConstants.Projection));
effect2.GetVariableByName("InverseView").AsMatrix().SetMatrix(sceneConstants.ViewInverse);
effect2.GetVariableByName("LightInverseViewProjection").AsMatrix().SetMatrix(Matrix.Invert(sceneConstants.LightViewProjection));
effect2.GetVariableByName("LightPosition").AsVector().Set(new Vector4(light, 1));
effect2.GetVariableByName("EyePosition").AsVector().Set(new Vector4(MathHelper.Convert(freelook.Eye), 1));
effect2.GetVariableByName("EyeZAxis").AsVector().Set(new Vector4(Vector3.Normalize(MathHelper.Convert(freelook.Target - freelook.Eye)), 1));
float tanHalfFOVY = (float)Math.Tan(FieldOfView * 0.5f);
effect2.GetVariableByName("TanHalfFOVX").AsScalar().Set(tanHalfFOVY * AspectRatio);
effect2.GetVariableByName("TanHalfFOVY").AsScalar().Set(tanHalfFOVY);
float projectionA = FarPlane / (FarPlane - _nearPlane);
float projectionB = -projectionA * _nearPlane;
effect2.GetVariableByName("ProjectionA").AsScalar().Set(projectionA);
effect2.GetVariableByName("ProjectionB").AsScalar().Set(projectionB);
Matrix overlayMatrix = Matrix.Scaling(2 * info.Width / _width, 2 * info.Height / _height, 1.0f);
overlayMatrix *= Matrix.Translation(-(_width - info.Width) / _width, (_height - info.Height) / _height, 0.0f);
effect2.GetVariableByName("OverlayViewProjection").AsMatrix().SetMatrix(overlayMatrix);
}
public override void Initialize()
{
Form.SizeChanged += (o, args) =>
{
_width = Form.ClientSize.Width;
_height = Form.ClientSize.Height;
if (_swapChain == null)
{
return;
}
renderView.Dispose();
depthView.Dispose();
_swapChain.ResizeBuffers(_swapChain.Description.BufferCount, 0, 0, Format.Unknown, 0);
CreateBuffers();
SetSceneConstants();
};
_width = 1024;
_height = 768;
_nearPlane = 1.0f;
ambient = new Color4(Color.Gray.ToArgb());
try
{
OnInitializeDevice();
}
catch (Exception e)
{
MessageBox.Show(e.ToString(), "Could not create DirectX 10 device.");
return;
}
// shader.fx
const ShaderFlags shaderFlags = ShaderFlags.None;
//const ShaderFlags shaderFlags = ShaderFlags.Debug | ShaderFlags.SkipOptimization;
ShaderBytecode shaderByteCode = LoadShader("shader.fx", shaderFlags);
effect = new Effect(_device, shaderByteCode);
EffectTechnique technique = effect.GetTechniqueByIndex(0);
shadowGenPass = technique.GetPassByIndex(0);
gBufferGenPass = technique.GetPassByIndex(1);
debugDrawPass = technique.GetPassByName("debug");
BufferDescription sceneConstantsDesc = new BufferDescription()
{
SizeInBytes = Marshal.SizeOf(typeof(ShaderSceneConstants)),
Usage = ResourceUsage.Dynamic,
BindFlags = BindFlags.ConstantBuffer,
CpuAccessFlags = CpuAccessFlags.Write,
OptionFlags = ResourceOptionFlags.None
};
sceneConstantsBuffer = new Buffer(_device, sceneConstantsDesc);
EffectConstantBuffer effectConstantBuffer = effect.GetConstantBufferByName("scene");
effectConstantBuffer.SetConstantBuffer(sceneConstantsBuffer);
RasterizerStateDescription desc = new RasterizerStateDescription()
{
CullMode = CullMode.None,
FillMode = FillMode.Solid,
IsFrontCounterClockwise = true,
DepthBias = 0,
DepthBiasClamp = 0,
SlopeScaledDepthBias = 0,
IsDepthClipEnabled = true,
};
_device.Rasterizer.State = new RasterizerState(_device, desc);
DepthStencilStateDescription depthDesc = new DepthStencilStateDescription()
{
IsDepthEnabled = true,
IsStencilEnabled = false,
DepthWriteMask = DepthWriteMask.All,
DepthComparison = Comparison.Less
};
depthStencilState = new DepthStencilState(_device, depthDesc);
DepthStencilStateDescription lightDepthStateDesc = new DepthStencilStateDescription()
{
IsDepthEnabled = true,
IsStencilEnabled = false,
DepthWriteMask = DepthWriteMask.All,
DepthComparison = Comparison.Less
};
lightDepthStencilState = new DepthStencilState(_device, lightDepthStateDesc);
// grender.fx
shaderByteCode = LoadShader("grender.fx", shaderFlags);
effect2 = new Effect(_device, shaderByteCode);
technique = effect2.GetTechniqueByIndex(0);
gBufferRenderPass = technique.GetPassByIndex(0);
gBufferOverlayPass = technique.GetPassByIndex(1);
Buffer quad = DemoFramework.SharpDX.MeshFactory.CreateScreenQuad(_device);
quadBinding = new VertexBufferBinding(quad, 20, 0);
Matrix quadProjection = Matrix.OrthoLH(1, 1, 0.1f, 1.0f);
effect2.GetVariableByName("ViewProjection").AsMatrix().SetMatrix(quadProjection);
InputElement[] elements = new[]
{
new InputElement("POSITION", 0, Format.R32G32B32_Float, 0, 0, InputClassification.PerVertexData, 0),
new InputElement("TEXCOORD", 0, Format.R32G32_Float, 12, 0, InputClassification.PerVertexData, 0),
};
quadBufferLayout = new InputLayout(_device, gBufferRenderPass.Description.Signature, elements);
info = new InfoText(_device);
_meshFactory = new MeshFactory(this);
MeshFactory = _meshFactory;
CreateBuffers();
LibraryManager.LibraryStarted();
}
