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Removed falloff distance from shader

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This commit is contained in:
Olivier Prat 2018-09-17 14:33:48 +02:00
parent acab748f57
commit ad5064b045
4 changed files with 10 additions and 11 deletions
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2
libraries/render-utils/src/AmbientOcclusionEffect.h
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@ -79,7 +79,7 @@ public:
void setRadius(float newRadius) { radius = std::max(0.01f, newRadius); emit dirty(); } void setRadius(float newRadius) { radius = std::max(0.01f, newRadius); emit dirty(); }
void setObscuranceLevel(float level) { obscuranceLevel = std::max(0.01f, level); emit dirty(); } void setObscuranceLevel(float level) { obscuranceLevel = std::max(0.01f, level); emit dirty(); }
void setFalloffAngle(float bias) { falloffAngle = std::max(0.0f, std::min(bias, 0.2f)); emit dirty(); } void setFalloffAngle(float bias) { falloffAngle = std::max(0.0f, std::min(bias, 1.0f)); emit dirty(); }
void setFalloffDistance(float value) { falloffDistance = std::max(0.0f, value); emit dirty(); } void setFalloffDistance(float value) { falloffDistance = std::max(0.0f, value); emit dirty(); }
void setEdgeSharpness(float sharpness) { edgeSharpness = std::max(0.0f, (float)sharpness); emit dirty(); } void setEdgeSharpness(float sharpness) { edgeSharpness = std::max(0.0f, (float)sharpness); emit dirty(); }
void setBlurDeviation(float deviation) { blurDeviation = std::max(0.0f, deviation); emit dirty(); } void setBlurDeviation(float deviation) { blurDeviation = std::max(0.0f, deviation); emit dirty(); }

14
libraries/render-utils/src/ssao.slh
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@ -290,14 +290,14 @@ float evalVisibilitySSAO(in vec3 centerPosition, in vec3 centerNormal, in vec3 t
return f * f * f * max((vn - getFalloffAngle()) / (epsilon + vv), 0.0); return f * f * f * max((vn - getFalloffAngle()) / (epsilon + vv), 0.0);
} }
float computeHorizonFromTap(vec3 tapPositionES, vec3 fragPositionES, vec3 fragNormalES, float normalizedRadius) { float computeHorizonFromTap(vec3 tapPositionES, vec3 fragPositionES, vec3 fragNormalES) {
vec3 deltaVec = tapPositionES - fragPositionES; vec3 deltaVec = tapPositionES - fragPositionES;
float distance = abs(deltaVec.z); float distanceSquared = dot(deltaVec, deltaVec);
float rawHorizon = dot(normalize(deltaVec), fragNormalES); float rawHorizon = dot(normalize(deltaVec), fragNormalES);
float radiusFalloff = distanceSquared / getRadius2();
rawHorizon = (rawHorizon - getFalloffAngle()) / (1.0 - getFalloffAngle()); rawHorizon = max(0.0, (rawHorizon - getFalloffAngle()) / (1.0 - getFalloffAngle()));
rawHorizon *= 1.0 - normalizedRadius * normalizedRadius; rawHorizon *= 1.0 - radiusFalloff;
rawHorizon *= 1.0 - smoothstep(getFalloffDistance()/2, getFalloffDistance(), distance);
return rawHorizon; return rawHorizon;
} }
@ -306,12 +306,12 @@ float computeHorizonFromTap(vec3 tapPositionES, vec3 fragPositionES, vec3 fragNo
vec3 tap = vec3(tapPixelPos, radius); vec3 tap = vec3(tapPixelPos, radius);
vec4 tapUVZ_mip = fetchTap(side, centerPixelPos, tap, imageSize); vec4 tapUVZ_mip = fetchTap(side, centerPixelPos, tap, imageSize);
vec3 tapPositionES = evalEyePositionFromZeye(side.x, tapUVZ_mip.z, tapUVZ_mip.xy); vec3 tapPositionES = evalEyePositionFromZeye(side.x, tapUVZ_mip.z, tapUVZ_mip.xy);
float rawHorizon = computeHorizonFromTap(tapPositionES, fragPositionES, fragNormalES, radius / searchRadius); float rawHorizon = computeHorizonFromTap(tapPositionES, fragPositionES, fragNormalES);
<$horizon$> = max(<$horizon$>, rawHorizon); <$horizon$> = max(<$horizon$>, rawHorizon);
<@endfunc@> <@endfunc@>
#define SSAO_LINEAR_SAMPLING 0 #define SSAO_LINEAR_SAMPLING 1
<@func updateHorizon(horizon, deltaPixelTap)@> <@func updateHorizon(horizon, deltaPixelTap)@>
{ {

3
libraries/render-utils/src/ssao_makeOcclusion.slf
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@ -69,8 +69,7 @@ void main(void) {
#endif #endif
} }
visibilitySum = visibilitySum * getInvNumSamples(); float occlusion = clamp(1.0 - visibilitySum * getObscuranceScaling() * getInvNumSamples(), 0.0, 1.0);
float occlusion = clamp(1.0 - visibilitySum * getObscuranceScaling(), 0.0, 1.0);
// KEEP IT for Debugging // KEEP IT for Debugging
// Bilateral box-filter over a quad for free, respecting depth edges // Bilateral box-filter over a quad for free, respecting depth edges

2
scripts/developer/utilities/render/ambientOcclusionPass.qml
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@ -37,7 +37,7 @@ Rectangle {
"Level:obscuranceLevel:1.0:false", "Level:obscuranceLevel:1.0:false",
"Num Taps:numSamples:32:true", "Num Taps:numSamples:32:true",
"Taps Spiral:numSpiralTurns:10.0:false", "Taps Spiral:numSpiralTurns:10.0:false",
"Falloff Angle:falloffAngle:0.2:false", "Falloff Angle:falloffAngle:0.5:false",
"Falloff Distance:falloffDistance:2.0:false", "Falloff Distance:falloffDistance:2.0:false",
"Blur Edge Sharpness:edgeSharpness:1.0:false", "Blur Edge Sharpness:edgeSharpness:1.0:false",
"Blur Radius:blurRadius:15.0:false", "Blur Radius:blurRadius:15.0:false",