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Diffstat (limited to 'src/shader/code/collide.glsl')
-rw-r--r-- | src/shader/code/collide.glsl | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/src/shader/code/collide.glsl b/src/shader/code/collide.glsl index 23e98f9..cb950cb 100644 --- a/src/shader/code/collide.glsl +++ b/src/shader/code/collide.glsl @@ -110,6 +110,16 @@ float getExternalPressureInflux(uint x, uint y) { } } +/// Domain description + +bool isEndOfWorld(uint x, uint y) { + return x == 0 || x == nX-1 || y == 0 || y == nY-1; +} + +bool isOuterWall(uint x, uint y) { + return x == 1 || x == nX-2 || y == 1 || y == nY-2; +} + /// Actual collide kernel void main() { @@ -120,6 +130,14 @@ void main() { return; } + if ( isEndOfWorld(x,y) ) { + return; + } + + if ( isOuterWall(x,y) ) { + return; + } + const float d = max(getExternalPressureInflux(x,y), density(x,y)); const vec2 v = velocity(x,y,d); |