import msp_interface;

#pragma MSP stage(compute)
layout(local_size_x=8, local_size_y=8) in;

uniform sampler2D bottom;
layout(r32f) uniform image2D surface_out;
layout(rg32f) uniform image2D velocity_out;
layout(r32f) uniform image2D clamping_out;

void main()
{
	ivec2 coord = ivec2(gl_GlobalInvocationID.xy);
	float surface = max(texelFetch(bottom, coord, 0).x, 0.0);
	imageStore(surface_out, coord, vec4(surface, 0.0, 0.0, 0.0));
	imageStore(velocity_out, coord, vec4(0.0));
	imageStore(clamping_out, coord, vec4(0.0));
}