blob: 1e033af35ce76ddb41bf32aefc0b9e0a6eee8c77 [file] [log] [blame]
#version 310 es
precision mediump float;
struct Tables {
uint edges[256];
int tris[4096];
};
layout (binding = 0) buffer Tables_1 {
uint edges[256];
int tris[4096];
} tables;
layout (binding = 1) buffer IsosurfaceVolume_1 {
vec3 tint_symbol;
vec3 tint_symbol_1;
vec3 tint_symbol_2;
uvec3 size;
float threshold;
float values[];
} volume;
layout (binding = 2) buffer PositionBuffer_1 {
float values[];
} positionsOut;
layout (binding = 3) buffer NormalBuffer_1 {
float values[];
} normalsOut;
layout (binding = 4) buffer IndexBuffer_1 {
uint tris[];
} indicesOut;
struct DrawIndirectArgs {
uint vc;
uint vertexCount;
uint firstVertex;
uint firstInstance;
uint indexCount;
uint indexedInstanceCount;
uint indexedFirstIndex;
uint indexedBaseVertex;
uint indexedFirstInstance;
};
layout (binding = 5) buffer DrawIndirectArgs_1 {
uint vc;
uint vertexCount;
uint firstVertex;
uint firstInstance;
uint indexCount;
uint indexedInstanceCount;
uint indexedFirstIndex;
uint indexedBaseVertex;
uint indexedFirstInstance;
} drawOut;
float valueAt(uvec3 index) {
if (any(greaterThanEqual(index, volume.size))) {
return 0.0f;
}
uint valueIndex = ((index.x + (index.y * volume.size.x)) + ((index.z * volume.size.x) * volume.size.y));
return volume.values[valueIndex];
}
vec3 positionAt(uvec3 index) {
return (volume.tint_symbol + (volume.tint_symbol_2 * vec3(index.xyz)));
}
vec3 normalAt(uvec3 index) {
return vec3((valueAt((index - uvec3(1u, 0u, 0u))) - valueAt((index + uvec3(1u, 0u, 0u)))), (valueAt((index - uvec3(0u, 1u, 0u))) - valueAt((index + uvec3(0u, 1u, 0u)))), (valueAt((index - uvec3(0u, 0u, 1u))) - valueAt((index + uvec3(0u, 0u, 1u)))));
}
vec3 positions[12] = vec3[12](vec3(0.0f, 0.0f, 0.0f), vec3(0.0f, 0.0f, 0.0f), vec3(0.0f, 0.0f, 0.0f), vec3(0.0f, 0.0f, 0.0f), vec3(0.0f, 0.0f, 0.0f), vec3(0.0f, 0.0f, 0.0f), vec3(0.0f, 0.0f, 0.0f), vec3(0.0f, 0.0f, 0.0f), vec3(0.0f, 0.0f, 0.0f), vec3(0.0f, 0.0f, 0.0f), vec3(0.0f, 0.0f, 0.0f), vec3(0.0f, 0.0f, 0.0f));
vec3 normals[12] = vec3[12](vec3(0.0f, 0.0f, 0.0f), vec3(0.0f, 0.0f, 0.0f), vec3(0.0f, 0.0f, 0.0f), vec3(0.0f, 0.0f, 0.0f), vec3(0.0f, 0.0f, 0.0f), vec3(0.0f, 0.0f, 0.0f), vec3(0.0f, 0.0f, 0.0f), vec3(0.0f, 0.0f, 0.0f), vec3(0.0f, 0.0f, 0.0f), vec3(0.0f, 0.0f, 0.0f), vec3(0.0f, 0.0f, 0.0f), vec3(0.0f, 0.0f, 0.0f));
uint indices[12] = uint[12](0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u);
uint cubeVerts = 0u;
void interpX(uint index, uvec3 i, float va, float vb) {
float mu = ((volume.threshold - va) / (vb - va));
positions[cubeVerts] = (positionAt(i) + vec3((volume.tint_symbol_2.x * mu), 0.0f, 0.0f));
vec3 na = normalAt(i);
vec3 nb = normalAt((i + uvec3(1u, 0u, 0u)));
normals[cubeVerts] = mix(na, nb, vec3(mu, mu, mu));
indices[index] = cubeVerts;
cubeVerts = (cubeVerts + 1u);
}
void interpY(uint index, uvec3 i, float va, float vb) {
float mu = ((volume.threshold - va) / (vb - va));
positions[cubeVerts] = (positionAt(i) + vec3(0.0f, (volume.tint_symbol_2.y * mu), 0.0f));
vec3 na = normalAt(i);
vec3 nb = normalAt((i + uvec3(0u, 1u, 0u)));
normals[cubeVerts] = mix(na, nb, vec3(mu, mu, mu));
indices[index] = cubeVerts;
cubeVerts = (cubeVerts + 1u);
}
void interpZ(uint index, uvec3 i, float va, float vb) {
float mu = ((volume.threshold - va) / (vb - va));
positions[cubeVerts] = (positionAt(i) + vec3(0.0f, 0.0f, (volume.tint_symbol_2.z * mu)));
vec3 na = normalAt(i);
vec3 nb = normalAt((i + uvec3(0u, 0u, 1u)));
normals[cubeVerts] = mix(na, nb, vec3(mu, mu, mu));
indices[index] = cubeVerts;
cubeVerts = (cubeVerts + 1u);
}
struct tint_symbol_4 {
uvec3 global_id;
};
void computeMain_inner(uvec3 global_id) {
uvec3 i0 = global_id;
uvec3 i1 = (global_id + uvec3(1u, 0u, 0u));
uvec3 i2 = (global_id + uvec3(1u, 1u, 0u));
uvec3 i3 = (global_id + uvec3(0u, 1u, 0u));
uvec3 i4 = (global_id + uvec3(0u, 0u, 1u));
uvec3 i5 = (global_id + uvec3(1u, 0u, 1u));
uvec3 i6 = (global_id + uvec3(1u, 1u, 1u));
uvec3 i7 = (global_id + uvec3(0u, 1u, 1u));
float v0 = valueAt(i0);
float v1 = valueAt(i1);
float v2 = valueAt(i2);
float v3 = valueAt(i3);
float v4 = valueAt(i4);
float v5 = valueAt(i5);
float v6 = valueAt(i6);
float v7 = valueAt(i7);
uint cubeIndex = 0u;
if ((v0 < volume.threshold)) {
cubeIndex = (cubeIndex | 1u);
}
if ((v1 < volume.threshold)) {
cubeIndex = (cubeIndex | 2u);
}
if ((v2 < volume.threshold)) {
cubeIndex = (cubeIndex | 4u);
}
if ((v3 < volume.threshold)) {
cubeIndex = (cubeIndex | 8u);
}
if ((v4 < volume.threshold)) {
cubeIndex = (cubeIndex | 16u);
}
if ((v5 < volume.threshold)) {
cubeIndex = (cubeIndex | 32u);
}
if ((v6 < volume.threshold)) {
cubeIndex = (cubeIndex | 64u);
}
if ((v7 < volume.threshold)) {
cubeIndex = (cubeIndex | 128u);
}
uint edges = tables.edges[cubeIndex];
if (((edges & 1u) != 0u)) {
interpX(0u, i0, v0, v1);
}
if (((edges & 2u) != 0u)) {
interpY(1u, i1, v1, v2);
}
if (((edges & 4u) != 0u)) {
interpX(2u, i3, v3, v2);
}
if (((edges & 8u) != 0u)) {
interpY(3u, i0, v0, v3);
}
if (((edges & 16u) != 0u)) {
interpX(4u, i4, v4, v5);
}
if (((edges & 32u) != 0u)) {
interpY(5u, i5, v5, v6);
}
if (((edges & 64u) != 0u)) {
interpX(6u, i7, v7, v6);
}
if (((edges & 128u) != 0u)) {
interpY(7u, i4, v4, v7);
}
if (((edges & 256u) != 0u)) {
interpZ(8u, i0, v0, v4);
}
if (((edges & 512u) != 0u)) {
interpZ(9u, i1, v1, v5);
}
if (((edges & 1024u) != 0u)) {
interpZ(10u, i2, v2, v6);
}
if (((edges & 2048u) != 0u)) {
interpZ(11u, i3, v3, v7);
}
uint triTableOffset = ((cubeIndex << 4u) + 1u);
uint indexCount = uint(tables.tris[(triTableOffset - 1u)]);
uint firstVertex = atomicAdd(drawOut.vertexCount, cubeVerts);
uint bufferOffset = ((global_id.x + (global_id.y * volume.size.x)) + ((global_id.z * volume.size.x) * volume.size.y));
uint firstIndex = (bufferOffset * 15u);
{
for(uint i = 0u; (i < cubeVerts); i = (i + 1u)) {
positionsOut.values[((firstVertex * 3u) + (i * 3u))] = positions[i].x;
positionsOut.values[(((firstVertex * 3u) + (i * 3u)) + 1u)] = positions[i].y;
positionsOut.values[(((firstVertex * 3u) + (i * 3u)) + 2u)] = positions[i].z;
normalsOut.values[((firstVertex * 3u) + (i * 3u))] = normals[i].x;
normalsOut.values[(((firstVertex * 3u) + (i * 3u)) + 1u)] = normals[i].y;
normalsOut.values[(((firstVertex * 3u) + (i * 3u)) + 2u)] = normals[i].z;
}
}
{
for(uint i = 0u; (i < indexCount); i = (i + 1u)) {
int index = tables.tris[(triTableOffset + i)];
indicesOut.tris[(firstIndex + i)] = (firstVertex + indices[index]);
}
}
{
for(uint i = indexCount; (i < 15u); i = (i + 1u)) {
indicesOut.tris[(firstIndex + i)] = firstVertex;
}
}
}
layout(local_size_x = 4, local_size_y = 4, local_size_z = 4) in;
void computeMain(tint_symbol_4 tint_symbol_3) {
computeMain_inner(tint_symbol_3.global_id);
return;
}
void main() {
tint_symbol_4 inputs;
inputs.global_id = gl_GlobalInvocationID;
computeMain(inputs);
}