public void Setup(ScriptableRenderContext renderContext, CullingResults cullingResults, ShadowSettings shadowSettings)
{
this.cullingResults = cullingResults;
commandBuffer.BeginSample(bufferName);
shadowRenderer.Setup(renderContext, cullingResults, shadowSettings);
SetupLights();
shadowRenderer.Render();
commandBuffer.EndSample(bufferName);
renderContext.ExecuteCommandBuffer(commandBuffer);
commandBuffer.Clear();
}
public void Render()
{
// Update hulls internal data structures.
Hulls.Update();
// We want to use clamping sampler state throughout the lightmap rendering process.
// This is required when drawing lights. Since light rendering and alpha clearing is done
// in a single step, light is rendered with slightly larger quad where tex coords run out of the [0..1] range.
Device.SamplerStates[0] = SamplerState.LinearClamp;
// Switch render target to lightmap.
Device.SetRenderTargets(Textures.LightmapBindings);
// Clear lightmap color, depth and stencil data.
Device.Clear(ClearOptions.DepthBuffer | ClearOptions.Stencil | ClearOptions.Target, _ambientColor, 1f, 0);
// Set per frame shader data.
ShadowRenderer.PreRender();
// Generate lightmap. For each light, mask the shadowed areas determined by hulls and render light.
int lightCount = Lights.Count;
for (int i = 0; i < lightCount; i++)
{
Light light = Lights[i];
// Continue only if light is enabled and not inside any hull.
if (!light.Enabled || Hulls.Contains(light))
{
continue;
}
// Update light's internal data structures.
light.Update();
// Continue only if light is within camera view.
if (!light.Intersects(Camera))
{
continue;
}
// Set scissor rectangle to clip any shadows outside of light's range.
BoundingRectangle scissor;
Camera.GetScissorRectangle(light, out scissor);
Device.SetScissorRectangle(ref scissor);
// Mask shadowed areas by reducing alpha.
ShadowRenderer.Render(light);
// Draw light and clear alpha (reset it to 1 [fully lit] for next light).
LightRenderer.Render(light);
// Clear light's dirty flag.
light.Dirty = false;
}
// Switch render target back to default.
Device.SetRenderTargets(Textures.GetOriginalRenderTargetBindings());
// Blend original scene and lightmap and present to backbuffer.
LightMapRenderer.Present();
// Clear hulls dirty flag.
Hulls.Dirty = false;
}