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rendering: tune main light shadow bias defaults

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ssdfasd
2026-04-13 02:24:14 +08:00
parent b7428b0ef1
commit 00875e0c90
3 changed files with 13 additions and 9 deletions
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12
engine/include/XCEngine/Rendering/Shadow/DirectionalShadowSettings.h
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@@ -6,14 +6,18 @@ namespace XCEngine {
namespace Rendering {
struct DirectionalShadowSamplingSettings {
float receiverDepthBias = 0.0015f;
float normalBiasScale = 1.5f;
// Keep receiver bias modest and rely more on caster / normal bias so
// contact shadows do not detach too aggressively.
float receiverDepthBias = 0.0010f;
float normalBiasScale = 2.0f;
float shadowStrength = 0.85f;
};
struct DirectionalShadowCasterBiasSettings {
float depthBiasFactor = 1.0f;
int32_t depthBiasUnits = 2;
// Single-map directional shadows need a stronger raster bias baseline than
// the previous placeholder values to keep acne under control.
float depthBiasFactor = 2.5f;
int32_t depthBiasUnits = 4;
};
} // namespace Rendering

2
tests/Rendering/unit/test_camera_scene_renderer.cpp
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@@ -1340,7 +1340,7 @@ TEST(CameraRenderer_Test, AutoAllocatesDirectionalShadowSurfaceFromShadowPlan) {
EXPECT_FLOAT_EQ(pipelineState->lastShadowViewProjection.m[0][3], 11.0f);
EXPECT_FLOAT_EQ(pipelineState->lastShadowViewProjection.m[1][3], 12.0f);
EXPECT_FLOAT_EQ(pipelineState->lastShadowViewProjection.m[2][3], 13.0f);
EXPECT_FLOAT_EQ(pipelineState->lastShadowSampling.settings.receiverDepthBias, 0.0015f);
EXPECT_FLOAT_EQ(pipelineState->lastShadowSampling.settings.receiverDepthBias, 0.0010f);
EXPECT_FLOAT_EQ(pipelineState->lastShadowMapMetrics.inverseMapSize.x, 1.0f / 256.0f);
EXPECT_FLOAT_EQ(pipelineState->lastShadowMapMetrics.inverseMapSize.y, 1.0f / 128.0f);
EXPECT_FLOAT_EQ(pipelineState->lastShadowSampling.settings.shadowStrength, 0.85f);

8
tests/Rendering/unit/test_scene_render_request_planner.cpp
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@@ -285,9 +285,9 @@ TEST(SceneRenderRequestPlanner_Test, SanitizesInvalidDirectionalShadowPlanningSe
EXPECT_FLOAT_EQ(settings.minDepthRange, 20.0f);
EXPECT_FLOAT_EQ(settings.boundsPadding, 1.0f);
EXPECT_FLOAT_EQ(settings.minDepthPadding, 2.0f);
EXPECT_FLOAT_EQ(settings.sampling.receiverDepthBias, 0.0015f);
EXPECT_FLOAT_EQ(settings.sampling.normalBiasScale, 1.5f);
EXPECT_FLOAT_EQ(settings.sampling.receiverDepthBias, 0.0010f);
EXPECT_FLOAT_EQ(settings.sampling.normalBiasScale, 2.0f);
EXPECT_FLOAT_EQ(settings.sampling.shadowStrength, 1.0f);
EXPECT_FLOAT_EQ(settings.casterBias.depthBiasFactor, 1.0f);
EXPECT_EQ(settings.casterBias.depthBiasUnits, 2);
EXPECT_FLOAT_EQ(settings.casterBias.depthBiasFactor, 2.5f);
EXPECT_EQ(settings.casterBias.depthBiasUnits, 4);
}