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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 {
}
}
)";
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