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Fix OmnidirectionalSightline feature rendering on modern devices #249

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Fix OmnidirectionalSightline feature rendering on modern devices #249

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5 changes: 3 additions & 2 deletions worldwind/src/main/res/raw/gov_nasa_worldwind_sightlineprogram_frag.glsl
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Original file line number Diff line number Diff line change
Expand Up @@ -5,13 +5,14 @@

#ifdef GL_FRAGMENT_PRECISION_HIGH
precision highp float;
uniform highp sampler2D depthSampler;
#else
precision mediump float;
uniform mediump sampler2D depthSampler;
#endif

uniform float range;
uniform vec4 color[2];
uniform sampler2D depthSampler;

varying vec4 sightlinePosition;
varying float sightlineDistance;
Expand All @@ -32,7 +33,7 @@ void main() {
/* Compute a mask that's on when the object's depth is less than the sightline's depth. The depth texture contains
the scene's minimum depth at each position, from the sightline's point of view. */
vec3 sightlineCoord = clipCoord * 0.5 + 0.5;
float sightlineDepth = texture2D(depthSampler, sightlineCoord.xy).z;
float sightlineDepth = texture2D(depthSampler, sightlineCoord.xy).r;
float occludeMask = step(sightlineDepth, sightlineCoord.z);

/* Modulate the RGBA color with the computed masks to display fragments according to the sightline's configuration. */
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