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author | Adrian Kummerlaender | 2018-12-15 23:09:32 +0100 |
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committer | Adrian Kummerlaender | 2018-12-15 23:09:32 +0100 |
commit | 44f5ac32a68a617f93704d44c4339f7db13b323e (patch) | |
tree | 6c191524aca1c7dbf3329026a59cfa3bc0109d2f /src/shader/code/stream.glsl | |
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Hacky D2Q9 BGK LBM on GPU using GLSL compute shaders
Improvised on top of computicles's scaffolding.
Works in a world where _works_ is defined as "displays stuff on screen that invokes thoughts of fluid movement".
Diffstat (limited to 'src/shader/code/stream.glsl')
-rw-r--r-- | src/shader/code/stream.glsl | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/src/shader/code/stream.glsl b/src/shader/code/stream.glsl new file mode 100644 index 0000000..7dd5ba8 --- /dev/null +++ b/src/shader/code/stream.glsl @@ -0,0 +1,30 @@ +static const std::string STREAM_SHADER_CODE = R"( +#version 430 + +layout (local_size_x = 1, local_size_y = 1) in; +layout (std430, binding=1) buffer bufferCollide{ float collideCells[]; }; +layout (std430, binding=2) buffer bufferStream{ float streamCells[]; }; + +float get(uint x, uint y, int i, int j) { + return collideCells[9*128*y + 9*x + (i+1)*3 + j+1]; +} + +void set(uint x, uint y, int i, int j, float v) { + streamCells[9*128*y + 9*x + (i+1)*3 + j+1] = v; +} + +void main() { + const uint x = gl_GlobalInvocationID.x; + const uint y = gl_GlobalInvocationID.y; + + if ( x != 0 && x != 128-1 && y != 0 && y != 128-1 ) { + for ( int i = -1; i <= 1; ++i ) { + for ( int j = -1; j <= 1; ++j ) { + set(x+i,y+j,i,j, get(x,y,i,j)); + } + } + } else { + + } +} +)"; |