RenderableOrbitalKepler trail fix

modules/space/rendering/renderableorbitalkepler.cpp

@@ -687,11 +687,10 @@ void RenderableOrbitalKepler::updateBuffers() {
     glVertexAttribPointer(0, 4, GL_FLOAT, GL_FALSE, sizeof(TrailVBOLayout), nullptr);
 
     glEnableVertexAttribArray(1);
-    glVertexAttribPointer(
+    glVertexAttribLPointer(
         1,
         2,
         GL_DOUBLE,
-        GL_FALSE,
         sizeof(TrailVBOLayout),
         reinterpret_cast<GLvoid*>(4 * sizeof(GL_FLOAT))
     );
@@ -713,8 +712,8 @@ void RenderableOrbitalKepler::calculateSegmentsForPoints(const RenderData& data)
         // Check how far along the trail we are
         const kepler::Parameters& orbit = _parameters[i];
         const double nRevs = (data.time.j2000Seconds() - orbit.epoch) / orbit.period;
-        double frac = nRevs - std::trunc(nRevs);
-        frac += (frac < 0.0) ? 1.0: 0.0;
+        float frac = static_cast<float>(nRevs - std::trunc(nRevs));
+        frac += (frac < 0.f) ? 1.f: 0.f;
 
         // Get the closest vertex before that point
         const int nSegments = _segmentSizeRaw[i] - 1;
@@ -739,8 +738,8 @@ void RenderableOrbitalKepler::calculateSegmentsForTrails(const RenderData& data)
         // Check how far along the trail we are
         const kepler::Parameters& orbit = _parameters[i];
         const double nRevs = (data.time.j2000Seconds() - orbit.epoch) / orbit.period;
-        double frac = nRevs - std::trunc(nRevs);
-        frac += (frac < 0.0) ? 1.0 : 0.0;
+        float frac = static_cast<float>(nRevs - std::trunc(nRevs));
+        frac += (frac < 0.f) ? 1.f : 0.f;
 
         int p0Start = 0;
         int p0Length = 0;

modules/space/shaders/keplerpoints_gs.glsl

@@ -54,8 +54,8 @@ void main() {
   float v1Frac = vertexRevolutionFraction[1];
 
   // Interpolate position of current position of the trail head
-  float dFrac = abs(cFrac - v0Frac);
-  float vFrac = abs(v1Frac - v0Frac);
+  float dFrac = cFrac - v0Frac;
+  float vFrac = v1Frac - v0Frac;
   float percentage = dFrac / vFrac;
 
   vec4 v0Weighted = (1.0 - percentage) * gl_in[0].gl_Position;

modules/space/shaders/keplerpoints_vs.glsl

@@ -25,7 +25,7 @@
 #version __CONTEXT__
 
 layout (location = 0) in vec4 vertexData; // 1: x, 2: y, 3: z, 4: timeOffset,
-layout (location = 1) in vec2 orbitData; // 1: epoch, 2: period
+layout (location = 1) in dvec2 orbitData; // 1: epoch, 2: period
 
 uniform double inGameTime;
 
@@ -33,8 +33,8 @@ flat out float currentRevolutionFraction;
 flat out float vertexRevolutionFraction;
 
 void main() {
-  float epoch = orbitData.x;
-  float period = orbitData.y;
+  double epoch = orbitData.x;
+  double period = orbitData.y;
 
   // calculate nr of periods, get fractional part to know where the vertex closest to the
   // debris part is right now
@@ -45,7 +45,7 @@ void main() {
   }
 
   // Same procedure for the current vertex
-  vertexRevolutionFraction = vertexData.w / period;
+  vertexRevolutionFraction = float(vertexData.w / period);
 
   gl_Position = vec4(vertexData.xyz, 1.0);
 }

modules/space/shaders/keplertrails_vs.glsl

@@ -27,7 +27,7 @@
 #include "PowerScaling/powerScalingMath.hglsl"
 
 layout (location = 0) in vec4 vertexData; // 1: x, 2: y, 3: z, 4: timeOffset,
-layout (location = 1) in vec2 orbitData; // 1: epoch, 2: period
+layout (location = 1) in dvec2 orbitData; // 1: epoch, 2: period
 
 out vec4 viewSpacePosition;
 out float viewSpaceDepth;
@@ -48,18 +48,17 @@ void main() {
   // offsetPeriods is calculated to know how much to fade that specific fragment.
 
   // If orbit_data is doubles, cast to float first
-  float epoch = orbitData.x;
-  float period = orbitData.y;
+  double epoch = orbitData.x;
+  double period = orbitData.y;
 
   // Calculate nr of periods, get fractional part to know where the vertex closest to the
   // debris part is right now
   double nrOfRevolutions = (inGameTime - epoch) / period;
   double frac = double(int(nrOfRevolutions));
-  double periodFractiond = nrOfRevolutions - frac;
-  if (periodFractiond < 0.0) {
-    periodFractiond += 1.0;
+  periodFraction = float(nrOfRevolutions - frac);
+  if (periodFraction < 0.0) {
+    periodFraction += 1.0;
   }
-  periodFraction = float(periodFractiond);
 
   // Same procedure for the current vertex
   offsetPeriods = vertexData.w / float(period);