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Implement screen space cone tracing (SSCT)

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This is a technique from Naughty Dog used in TLOU2, where we compute
the "ambient" shadowing of a dominant light in screen-space.

This is currently integrated to the SSAO pass.
This commit is contained in:
Pixelflinger
2020-09-28 10:53:30 -07:00
committed by Mathias Agopian
parent 0f2993aec7
commit bfd1de809a
9 changed files with 280 additions and 19 deletions
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samples/material_sandbox.cpp
+14
View File
@@ -615,6 +615,20 @@ static void gui(filament::Engine* engine, filament::View*) {
ImGui::SliderInt("Quality", &quality, 0, 3);
ImGui::SliderInt("Low Pass", &lowpass, 0, 2);
ImGui::Checkbox("High quality upsampling", &upsampling);
if (ImGui::CollapsingHeader("Dominant Light Shadows")) {
int sampleCount = params.ssaoOptions.ssct.sampleCount;
ImGui::Checkbox("Enabled##dls", &params.ssaoOptions.ssct.enabled);
ImGui::SliderFloat("Cone angle", &params.ssaoOptions.ssct.lightConeRad, 0.0f, (float)M_PI_2);
ImGui::SliderFloat("Start dist", &params.ssaoOptions.ssct.startTraceDistance, 0.0f, 1.0f);
ImGui::SliderFloat("Contact dist max", &params.ssaoOptions.ssct.contactDistanceMax, 0.0f, 100.0f);
ImGui::SliderFloat("Intensity##dls", &params.ssaoOptions.ssct.intensity, 0.0f, 10.0f);
ImGui::SliderFloat("Depth bias", &params.ssaoOptions.ssct.depthBias, 0.0f, 1.0f);
ImGui::SliderFloat("Depth slope bias", &params.ssaoOptions.ssct.depthSlopeBias, 0.0f, 1.0f);
ImGui::SliderFloat("Scale", &params.ssaoOptions.ssct.scale, 0.0f, 10.0f);
ImGui::SliderInt("Sample Count", &sampleCount, 1, 32);
ImGuiExt::DirectionWidget("Direction##dls", params.ssaoOptions.ssct.lightDirection.v);
params.ssaoOptions.ssct.sampleCount = sampleCount;
}
params.ssaoOptions.upsampling = upsampling ? View::QualityLevel::HIGH : View::QualityLevel::LOW;
params.ssaoOptions.quality = (View::QualityLevel)quality;
params.ssaoOptions.lowPassFilter = (View::QualityLevel)lowpass;