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Adjust DDGI quality and optimize

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This commit is contained in:
Wojciech Figat
2022-06-17 14:32:07 +02:00
parent b8ff4ae2e0
commit 9f99d74e53
5 changed files with 35 additions and 26 deletions
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10
Source/Engine/Renderer/GI/DynamicDiffuseGlobalIllumination.cpp
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@@ -34,7 +34,7 @@
// This must match HLSL
#define DDGI_TRACE_RAYS_PROBES_COUNT_LIMIT 4096 // Maximum amount of probes to update at once during rays tracing and blending
#define DDGI_TRACE_RAYS_GROUP_SIZE_X 32
#define DDGI_TRACE_RAYS_LIMIT 512 // Limit of rays per-probe (runtime value can be smaller)
#define DDGI_TRACE_RAYS_LIMIT 256 // Limit of rays per-probe (runtime value can be smaller)
#define DDGI_PROBE_RESOLUTION_IRRADIANCE 6 // Resolution (in texels) for probe irradiance data (excluding 1px padding on each side)
#define DDGI_PROBE_RESOLUTION_DISTANCE 14 // Resolution (in texels) for probe distance data (excluding 1px padding on each side)
#define DDGI_PROBE_UPDATE_BORDERS_GROUP_SIZE 8
@@ -268,26 +268,30 @@ bool DynamicDiffuseGlobalIlluminationPass::Render(RenderContext& renderContext,
// Setup options
auto& settings = renderContext.List->Settings.GlobalIllumination;
// TODO: implement GI Quality to affect cascades update rate, probes spacing and rays count per probe
const float probesSpacing = 100.0f; // GI probes placement spacing nearby camera (for closest cascade; gets automatically reduced for further cascades)
int32 probeRaysCount;
switch (Graphics::GIQuality)
{
case Quality::Low:
probeRaysCount = 96;
break;
case Quality::Medium:
probeRaysCount = 128;
break;
case Quality::High:
probeRaysCount = 192;
break;
case Quality::Ultra:
default:
probeRaysCount = 256;
break;
}
ASSERT_LOW_LAYER(Math::Min(Math::AlignUp(probeRaysCount, DDGI_TRACE_RAYS_GROUP_SIZE_X), DDGI_TRACE_RAYS_LIMIT) == probeRaysCount);
bool debugProbes = false; // TODO: add debug option to draw probes locations -> in Graphics window - Editor-only
const float indirectLightingIntensity = settings.Intensity;
const float probeHistoryWeight = Math::Clamp(settings.TemporalResponse, 0.0f, 0.98f);
const float distance = settings.Distance;
const Color fallbackIrradiance = settings.FallbackIrradiance;
const int32 probeRaysCount = Math::Min(Math::AlignUp(256, DDGI_TRACE_RAYS_GROUP_SIZE_X), DDGI_TRACE_RAYS_LIMIT); // TODO: make it based on the GI Quality
// Automatically calculate amount of cascades to cover the GI distance at the current probes spacing
const int32 idealProbesCount = 20; // Ideal amount of probes per-cascade to try to fit in order to cover whole distance