public static Reaction <Camera> Renderer(SceneGraph scene,
int mapSize, ShadowMapType type, bool cascaded)
{
var depthFramebuffer = new Framebuffer(FramebufferTarget.Framebuffer);
_shadowShader = cascaded ?
new GLProgram(
VertexShaderCascaded(),
GeometryShaderCascaded(),
DepthFragmentShader()) :
new GLProgram(
VertexShader(),
type == ShadowMapType.Depth ? DepthFragmentShader() : VarianceFragmentShader());
_instance = new Shadows(_shadowShader, cascaded);
Texture depthTexture;
var render = React.By <Camera> (_instance.Render);
if (type == ShadowMapType.Depth || cascaded)
{
depthTexture = cascaded ?
new Texture(TextureTarget.Texture2DArray, PixelInternalFormat.DepthComponent16,
mapSize, mapSize, CascadedShadowUniforms.MapCount, PixelFormat.DepthComponent,
PixelType.Float, IntPtr.Zero) :
new Texture(TextureTarget.Texture2D, PixelInternalFormat.DepthComponent16,
mapSize, mapSize, PixelFormat.DepthComponent, PixelType.Float, IntPtr.Zero);
depthFramebuffer.AddTexture(FramebufferAttachment.DepthAttachment, depthTexture);
}
else
{
depthTexture = new Texture(TextureTarget.Texture2D, PixelInternalFormat.Rg32f,
mapSize, mapSize, PixelFormat.Rg, PixelType.Float, IntPtr.Zero);
depthFramebuffer.AddTexture(FramebufferAttachment.ColorAttachment0, depthTexture);
depthFramebuffer.AddRenderbuffer(FramebufferAttachment.DepthAttachment,
RenderbufferStorage.DepthComponent16, mapSize, mapSize);
var gaussTexture = new Texture(TextureTarget.Texture2D, PixelInternalFormat.Rg32f,
mapSize / 2, mapSize / 2, PixelFormat.Rg, PixelType.Float, IntPtr.Zero);
render = render.And(GaussianFilter.Both().MapInput((Camera cam) =>
Tuple.Create(depthTexture, gaussTexture)));
}
scene.GlobalLighting.ShadowMap = depthTexture;
return(render
.DrawBuffer(type == ShadowMapType.Depth ? DrawBufferMode.None : DrawBufferMode.Front)
.DepthTest()
.Culling()
.Viewport(new Vec2i(mapSize, mapSize))
.Program(_shadowShader)
.Texture(depthTexture)
.Framebuffer(depthFramebuffer));
}
public static Reaction<Camera> Renderer(SceneGraph scene,
int mapSize, ShadowMapType type, bool cascaded)
{
var depthFramebuffer = new Framebuffer (FramebufferTarget.Framebuffer);
_shadowShader = cascaded ?
new GLProgram (
VertexShaderCascaded (),
GeometryShaderCascaded (),
DepthFragmentShader ()) :
new GLProgram (
VertexShader (),
type == ShadowMapType.Depth ? DepthFragmentShader () : VarianceFragmentShader ());
_instance = new Shadows (_shadowShader, cascaded);
Texture depthTexture;
var render =React.By<Camera> (_instance.Render);
if (type == ShadowMapType.Depth || cascaded)
{
depthTexture = cascaded ?
new Texture (TextureTarget.Texture2DArray, PixelInternalFormat.DepthComponent16,
mapSize, mapSize, CascadedShadowUniforms.MapCount, PixelFormat.DepthComponent,
PixelType.Float, IntPtr.Zero) :
new Texture (TextureTarget.Texture2D, PixelInternalFormat.DepthComponent16,
mapSize, mapSize, PixelFormat.DepthComponent, PixelType.Float, IntPtr.Zero);
depthFramebuffer.AddTexture (FramebufferAttachment.DepthAttachment, depthTexture);
}
else
{
depthTexture = new Texture (TextureTarget.Texture2D, PixelInternalFormat.Rg32f,
mapSize, mapSize, PixelFormat.Rg, PixelType.Float, IntPtr.Zero);
depthFramebuffer.AddTexture (FramebufferAttachment.ColorAttachment0, depthTexture);
depthFramebuffer.AddRenderbuffer (FramebufferAttachment.DepthAttachment,
RenderbufferStorage.DepthComponent16, mapSize, mapSize);
var gaussTexture = new Texture (TextureTarget.Texture2D, PixelInternalFormat.Rg32f,
mapSize / 2, mapSize / 2, PixelFormat.Rg, PixelType.Float, IntPtr.Zero);
render = render.And (GaussianFilter.Both ().MapInput ((Camera cam) =>
Tuple.Create (depthTexture, gaussTexture)));
}
scene.GlobalLighting.ShadowMap = depthTexture;
return render
.DrawBuffer (type == ShadowMapType.Depth ? DrawBufferMode.None : DrawBufferMode.Front)
.DepthTest ()
.Culling ()
.Viewport (new Vec2i (mapSize, mapSize))
.Program (_shadowShader)
.Texture (depthTexture)
.Framebuffer (depthFramebuffer);
}