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[Distant Horizons] Beacon beams depth-test #166

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[Distant Horizons] Beacon beams depth-test #166

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16 changes: 15 additions & 1 deletion shaders/lib/util/spaceConversion.glsl
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Original file line number Diff line number Diff line change
Expand Up @@ -25,4 +25,18 @@ vec3 ShadowClipToShadowView(vec3 pos) {

vec3 ShadowViewToPlayer(vec3 pos) {
return mat3(shadowModelViewInverse) * pos;
}
}

// Distant Horizon
#ifdef DISTANT_HORIZONS

vec3 ScreenToViewDH(vec3 pos) {
vec4 iProjDiag = vec4(dhProjectionInverse[0].x,
dhProjectionInverse[1].y,
dhProjectionInverse[2].zw);
vec3 p3 = pos * 2.0 - 1.0;
vec4 viewPos = iProjDiag * p3.xyzz + dhProjectionInverse[3];
return viewPos.xyz / viewPos.w;
}

#endif
13 changes: 13 additions & 0 deletions shaders/program/gbuffers_beaconbeam.glsl
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Expand Up @@ -41,6 +41,19 @@ void main() {
#else
vec3 viewPos = ScreenToView(screenPos);
#endif

#ifdef DISTANT_HORIZONS
vec3 screenPosDH = vec3(screenPos.xy, texture2D(dhDepthTex, screenPos.xy).r);
#ifdef TAA
vec3 viewPosDH = ScreenToViewDH(vec3(TAAJitter(screenPosDH.xy, -0.5), screenPosDH.z));
#else
vec3 viewPosDH = ScreenToViewDH(screenPosDH);
#endif

if (viewPos.z < viewPosDH.z)
discard;
#endif

float lViewPos = length(viewPos);

#ifdef IPBR
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