private void RenderVelocityBuffer(CameraFrustumQuery frustumQuery, RenderContext context)
{
// Create a render target for the velocity buffer and store it in the render context.
RenderTarget2D velocityBuffer = GraphicsService.RenderTargetPool.Obtain2D(
new RenderTargetFormat(
context.Viewport.Width,
context.Viewport.Height,
false,
SurfaceFormat.HalfVector2,
DepthFormat.Depth24Stencil8));
context.Data[RenderContextKeys.VelocityBuffer] = velocityBuffer;
var graphicsDevice = GraphicsService.GraphicsDevice;
graphicsDevice.SetRenderTarget(velocityBuffer);
graphicsDevice.Clear(Color.Black);
// Update the info in the render context. Some renderers or effects might use this info.
context.RenderTarget = velocityBuffer;
context.Viewport = graphicsDevice.Viewport;
// We do not have a valid depth buffer. In this pass we do not want to render
// all objects again, therefore we rebuild the hardware depth buffer from the
// G-Buffer using the RebuildZBufferRenderer. (As a side effect, this also
// clears the color target.)
_rebuildZBufferRenderer.Render(context, false);
// Render the meshes using the "Velocity" material pass.
// It is only necessary to render meshes that have moved since the last frame.
foreach (var node in frustumQuery.SceneNodes)
{
if (node is MeshNode && node.LastPoseWorld.HasValue && node.LastPoseWorld.Value != node.PoseWorld)
_movingMeshes.Add(node);
}
graphicsDevice.DepthStencilState = DepthStencilState.Default;
graphicsDevice.RasterizerState = RasterizerState.CullCounterClockwise;
graphicsDevice.BlendState = BlendState.Opaque;
context.RenderPass = "******";
_meshRenderer.Render(_movingMeshes, context);
context.RenderPass = null;
_movingMeshes.Clear();
}
private RenderTarget2D RenderScene(CameraFrustumQuery frustumQuery, RenderContext context)
{
// Set an offscreen render target. The size is determined by the current viewport.
RenderTarget2D sceneRenderTarget = GraphicsService.RenderTargetPool.Obtain2D(
new RenderTargetFormat(
context.Viewport.Width,
context.Viewport.Height,
false,
SurfaceFormat.Color,
DepthFormat.Depth24Stencil8));
var graphicsDevice = GraphicsService.GraphicsDevice;
graphicsDevice.SetRenderTarget(sceneRenderTarget);
// Update the info in the render context. Some renderers or effects might use this info.
context.RenderTarget = sceneRenderTarget;
context.Viewport = graphicsDevice.Viewport;
graphicsDevice.Clear(Color.CornflowerBlue);
// Render the meshes using the "Default" material.
graphicsDevice.DepthStencilState = DepthStencilState.Default;
graphicsDevice.RasterizerState = RasterizerState.CullCounterClockwise;
graphicsDevice.BlendState = BlendState.Opaque;
graphicsDevice.SamplerStates[0] = SamplerState.AnisotropicWrap;
context.RenderPass = "******";
_meshRenderer.Render(frustumQuery.SceneNodes, context);
context.RenderPass = null;
// Render the sky.
_skyRenderer.Render(frustumQuery.SceneNodes, context);
// Set the render states for alpha blended objects and render BillboardNodes
// and ParticleSystemNodes.
graphicsDevice.DepthStencilState = DepthStencilState.DepthRead;
graphicsDevice.RasterizerState = RasterizerState.CullNone;
graphicsDevice.BlendState = BlendState.NonPremultiplied;
graphicsDevice.SamplerStates[0] = SamplerState.LinearWrap;
_billboardRenderer.Render(frustumQuery.SceneNodes, context);
return sceneRenderTarget;
}
private void RenderGBuffer(CameraFrustumQuery frustumQuery, RenderContext context)
{
// Create render targets for the G-buffer.
context.GBuffer0 = GraphicsService.RenderTargetPool.Obtain2D(
new RenderTargetFormat(
context.Viewport.Width,
context.Viewport.Height,
true, // Note: Only the SaoFilter for SSAO requires mipmaps to boost performance.
SurfaceFormat.Single,
DepthFormat.Depth24Stencil8));
context.GBuffer1 = GraphicsService.RenderTargetPool.Obtain2D(
new RenderTargetFormat(
context.Viewport.Width,
context.Viewport.Height,
false,
SurfaceFormat.Color,
DepthFormat.None));
var graphicsDevice = GraphicsService.GraphicsDevice;
_renderTargetBindings[0] = new RenderTargetBinding(context.GBuffer0);
_renderTargetBindings[1] = new RenderTargetBinding(context.GBuffer1);
graphicsDevice.SetRenderTargets(_renderTargetBindings);
// Update the info in the render context. Some renderers or effects might use this info.
context.RenderTarget = context.GBuffer0;
context.Viewport = graphicsDevice.Viewport;
// Clear the depth-stencil buffer.
graphicsDevice.Clear(ClearOptions.DepthBuffer | ClearOptions.Stencil, Color.Black, 1, 0);
// Reset the G-buffer to default values.
_clearGBufferRenderer.Render(context);
// Render the meshes using the "GBuffer" material pass.
graphicsDevice.DepthStencilState = DepthStencilState.Default;
graphicsDevice.RasterizerState = RasterizerState.CullCounterClockwise;
graphicsDevice.BlendState = BlendState.Opaque;
context.RenderPass = "******";
_meshRenderer.Render(frustumQuery.SceneNodes, context);
context.RenderPass = null;
}
