#include <metal_stdlib> using namespace metal; template<typename T, size_t N> struct tint_array { const constant T& operator[](size_t i) const constant { return elements[i]; } device T& operator[](size_t i) device { return elements[i]; } const device T& operator[](size_t i) const device { return elements[i]; } thread T& operator[](size_t i) thread { return elements[i]; } const thread T& operator[](size_t i) const thread { return elements[i]; } threadgroup T& operator[](size_t i) threadgroup { return elements[i]; } const threadgroup T& operator[](size_t i) const threadgroup { return elements[i]; } T elements[N]; }; struct tint_symbol_1 { float2 a_particlePos [[attribute(0)]]; float2 a_particleVel [[attribute(1)]]; float2 a_pos [[attribute(2)]]; }; struct tint_symbol_2 { float4 value [[position]]; }; float4 vert_main_inner(float2 a_particlePos, float2 a_particleVel, float2 a_pos) { float angle = -(atan2(a_particleVel[0], a_particleVel[1])); float2 pos = float2(((a_pos[0] * cos(angle)) - (a_pos[1] * sin(angle))), ((a_pos[0] * sin(angle)) + (a_pos[1] * cos(angle)))); return float4((pos + a_particlePos), 0.0f, 1.0f); } vertex tint_symbol_2 vert_main(tint_symbol_1 tint_symbol [[stage_in]]) { float4 const inner_result = vert_main_inner(tint_symbol.a_particlePos, tint_symbol.a_particleVel, tint_symbol.a_pos); tint_symbol_2 wrapper_result = {}; wrapper_result.value = inner_result; return wrapper_result; } struct tint_symbol_3 { float4 value [[color(0)]]; }; float4 frag_main_inner() { return float4(1.0f); } fragment tint_symbol_3 frag_main() { float4 const inner_result_1 = frag_main_inner(); tint_symbol_3 wrapper_result_1 = {}; wrapper_result_1.value = inner_result_1; return wrapper_result_1; } struct Particle { /* 0x0000 */ float2 pos; /* 0x0008 */ float2 vel; }; struct SimParams { /* 0x0000 */ float deltaT; /* 0x0004 */ float rule1Distance; /* 0x0008 */ float rule2Distance; /* 0x000c */ float rule3Distance; /* 0x0010 */ float rule1Scale; /* 0x0014 */ float rule2Scale; /* 0x0018 */ float rule3Scale; }; struct Particles { /* 0x0000 */ tint_array<Particle, 5> particles; }; void comp_main_inner(uint3 gl_GlobalInvocationID, device Particles* const tint_symbol_4, const constant SimParams* const tint_symbol_5, device Particles* const tint_symbol_6) { uint index = gl_GlobalInvocationID[0]; if ((index >= 5u)) { return; } float2 vPos = (*(tint_symbol_4)).particles[index].pos; float2 vVel = (*(tint_symbol_4)).particles[index].vel; float2 cMass = float2(0.0f); float2 cVel = float2(0.0f); float2 colVel = float2(0.0f); int cMassCount = 0; int cVelCount = 0; float2 pos = 0.0f; float2 vel = 0.0f; for(uint i = 0u; (i < 5u); i = (i + 1u)) { if ((i == index)) { continue; } pos = float2((*(tint_symbol_4)).particles[i].pos).xy; vel = float2((*(tint_symbol_4)).particles[i].vel).xy; if ((distance(pos, vPos) < (*(tint_symbol_5)).rule1Distance)) { cMass = (cMass + pos); cMassCount = as_type<int>((as_type<uint>(cMassCount) + as_type<uint>(1))); } if ((distance(pos, vPos) < (*(tint_symbol_5)).rule2Distance)) { colVel = (colVel - (pos - vPos)); } if ((distance(pos, vPos) < (*(tint_symbol_5)).rule3Distance)) { cVel = (cVel + vel); cVelCount = as_type<int>((as_type<uint>(cVelCount) + as_type<uint>(1))); } } if ((cMassCount > 0)) { cMass = ((cMass / float2(float(cMassCount), float(cMassCount))) - vPos); } if ((cVelCount > 0)) { cVel = (cVel / float2(float(cVelCount), float(cVelCount))); } vVel = (((vVel + (cMass * (*(tint_symbol_5)).rule1Scale)) + (colVel * (*(tint_symbol_5)).rule2Scale)) + (cVel * (*(tint_symbol_5)).rule3Scale)); vVel = (normalize(vVel) * clamp(length(vVel), 0.0f, 0.100000001f)); vPos = (vPos + (vVel * (*(tint_symbol_5)).deltaT)); if ((vPos[0] < -1.0f)) { vPos[0] = 1.0f; } if ((vPos[0] > 1.0f)) { vPos[0] = -1.0f; } if ((vPos[1] < -1.0f)) { vPos[1] = 1.0f; } if ((vPos[1] > 1.0f)) { vPos[1] = -1.0f; } (*(tint_symbol_6)).particles[index].pos = vPos; (*(tint_symbol_6)).particles[index].vel = vVel; } kernel void comp_main(device Particles* tint_symbol_7 [[buffer(1)]], const constant SimParams* tint_symbol_8 [[buffer(0)]], device Particles* tint_symbol_9 [[buffer(2)]], uint3 gl_GlobalInvocationID [[thread_position_in_grid]]) { comp_main_inner(gl_GlobalInvocationID, tint_symbol_7, tint_symbol_8, tint_symbol_9); return; }