/// <summary>
/// Generate the shadow map for a given spot light
/// </summary>
/// <param name="renderer"></param>
/// <param name="meshes"></param>
/// <param name="light"></param>
/// <param name="shadowMap"></param>
public void GenerateShadowTextureSpotLight(Renderer renderer, BaseSceneGraph renderWorld, Light light, SpotShadowMapEntry shadowMap)
{
//bind the render target
renderer.GraphicsDevice.SetRenderTarget(shadowMap.Texture);
//clear it to white, ie, far far away
renderer.GraphicsDevice.Clear(Color.White);
renderer.GraphicsDevice.BlendState = BlendState.Opaque;
renderer.GraphicsDevice.DepthStencilState = DepthStencilState.Default;
Matrix viewProj = light.ViewProjection;
shadowMap.LightViewProjection = viewProj;
BoundingFrustum frustum = light.Frustum;
_visibleMeshes.Clear();
//cull meshes outside the light volume
renderWorld.GetShadowCasters(frustum, _visibleMeshes);
renderer.InstancingGroupManager.Reset();
for (int index = 0; index < _visibleMeshes.Count; index++)
{
Mesh.SubMesh subMesh = _visibleMeshes[index];
//render it
if (!subMesh.InstanceEnabled)
subMesh.RenderShadowMap(ref viewProj, renderer.GraphicsDevice);
else
renderer.InstancingGroupManager.AddInstancedSubMesh(subMesh);
}
renderer.InstancingGroupManager.GenerateInstanceInfo(renderer.GraphicsDevice);
renderer.InstancingGroupManager.RenderShadowMap(ref viewProj, renderer.GraphicsDevice);
}
public ShadowRenderer(Renderer renderer)
{
//create the render targets
for (int i = 0; i < NUM_SPOT_SHADOWS; i++)
{
SpotShadowMapEntry entry = new SpotShadowMapEntry();
//we store the linear depth, in a float render target. We need also the HW zbuffer
entry.Texture = new RenderTarget2D(renderer.GraphicsDevice, SPOT_SHADOW_RESOLUTION,
SPOT_SHADOW_RESOLUTION, false, SurfaceFormat.Single,
DepthFormat.Depth24Stencil8, 0, RenderTargetUsage.DiscardContents);
entry.LightViewProjection = Matrix.Identity;
_spotShadowMaps.Add(entry);
}
}
public ShadowRenderer(Renderer renderer)
{
//create the render targets
for (int i = 0; i < NUM_SPOT_SHADOWS; i++)
{
SpotShadowMapEntry entry = new SpotShadowMapEntry();
//we store the linear depth, in a float render target. We need also the HW zbuffer
entry.Texture = new RenderTarget2D(renderer.GraphicsDevice, SPOT_SHADOW_RESOLUTION,
SPOT_SHADOW_RESOLUTION, false, SurfaceFormat.Single,
DepthFormat.Depth24Stencil8, 0, RenderTargetUsage.DiscardContents);
entry.LightViewProjection = Matrix.Identity;
_spotShadowMaps.Add(entry);
}
}
public void GenerateShadowTextureSpotLight(Renderer renderer, object[] meshes, object[] InstancedMeshes, Light light, SpotShadowMapEntry shadowMap)
{
//bind the render target
renderer.GraphicsDevice.SetRenderTarget(shadowMap.Texture);
//clear it to white, ie, far far away
renderer.GraphicsDevice.Clear(Color.White);
renderer.GraphicsDevice.BlendState = BlendState.Opaque;
renderer.GraphicsDevice.DepthStencilState = DepthStencilState.Default;
Matrix viewProj = light.ViewProjection;
shadowMap.LightViewProjection = viewProj;
BoundingFrustum frustum = light.Frustum;
foreach (object mesh in meshes)
{
if (mesh is List<Models>)
for (int index = 0; index < ((List<Models>)mesh).Count; index++)
{
Models m = ((List<Models>)mesh)[index];
//cull meshes outside the light volume
// if (!frustum.Intersects(m.BoundingSphere))
// continue;
//render it
m.RenderShadowMap(ref viewProj, renderer.GraphicsDevice);
}
if (mesh is Models)
{
//cull meshes outside the light volume
// if (!frustum.Intersects(((Models)mesh).BoundingSphere))
// continue;
//render it
((Models)mesh).RenderShadowMap(ref viewProj, renderer.GraphicsDevice);
}
if (mesh is CarPlayer)
{
((CarPlayer)mesh).RenderShadowMap(ref viewProj, renderer.GraphicsDevice);
}
if (mesh is Terrain.Terrain)
{
for (int index = 0; index < ((Terrain.Terrain)mesh).QuadTrees.Count; index++)
{
//cull meshes outside the light volume
// if (!frustum.Intersects(((Terrain.Terrain)mesh).QuadTrees[index].BoundingSphere))
// continue;
//render it
((Terrain.Terrain)mesh).QuadTrees[index].RenderShadowMap(ref viewProj, renderer.GraphicsDevice);
}
}
}
foreach (object mesh in InstancedMeshes)
{
if (mesh is Billboards.Billboard)
{
((Billboards.Billboard)mesh).TreePreDraw();
for (int lod = 0; lod < ((Billboards.Billboard)mesh).LOD; lod++)
if (((Billboards.Billboard)mesh).instanceTransforms[lod].Length != 0)
((Billboards.Billboard)mesh).trunck[lod][0].RenderShadowMap(ref viewProj, renderer.GraphicsDevice);
if (((Billboards.Billboard)mesh).Leaves)
for (int tree = 0; tree < ((Billboards.Billboard)mesh).NoTrees; tree++)
{
if (((Billboards.Billboard)mesh).LeavesAreVisible[tree])
for (int j = 0; j < ((Billboards.Billboard)mesh).NoLeaves; j++)
{
((Billboards.Billboard)mesh).leaves[tree][j].UpdateTransformationMatrix(((Billboards.Billboard)mesh).instanceTransforms1[tree]);
if (j == 0)
((Billboards.Billboard)mesh).leaves[tree][j].RenderShadowMap(ref viewProj, renderer.GraphicsDevice);
}
}
}
}
}
/// <summary>
/// Generate the shadow map for a given spot light
/// </summary>
/// <param name="renderer"></param>
/// <param name="meshes"></param>
/// <param name="light"></param>
/// <param name="shadowMap"></param>
public void GenerateShadowTextureSpotLight(Renderer renderer, BaseSceneGraph renderWorld, Light light, SpotShadowMapEntry shadowMap)
{
//bind the render target
renderer.GraphicsDevice.SetRenderTarget(shadowMap.Texture);
//clear it to white, ie, far far away
renderer.GraphicsDevice.Clear(Color.White);
renderer.GraphicsDevice.BlendState = BlendState.Opaque;
renderer.GraphicsDevice.DepthStencilState = DepthStencilState.Default;
Matrix viewProj = light.ViewProjection;
shadowMap.LightViewProjection = viewProj;
BoundingFrustum frustum = light.Frustum;
_visibleMeshes.Clear();
//cull meshes outside the light volume
renderWorld.GetShadowCasters(frustum, _visibleMeshes);
renderer.InstancingGroupManager.Reset();
for (int index = 0; index < _visibleMeshes.Count; index++)
{
Mesh.SubMesh subMesh = _visibleMeshes[index];
//render it
if (!subMesh.InstanceEnabled)
{
subMesh.RenderShadowMap(ref viewProj, renderer.GraphicsDevice);
}
else
{
renderer.InstancingGroupManager.AddInstancedSubMesh(subMesh);
}
}
renderer.InstancingGroupManager.GenerateInstanceInfo(renderer.GraphicsDevice);
renderer.InstancingGroupManager.RenderShadowMap(ref viewProj, renderer.GraphicsDevice);
}
