ellipsoid/QuaternionEngine
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OPTIM: shader optimization

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hydrogendeuteride
2025-12-26 14:29:59 +09:00
parent d6216b20fc
commit cead54c32e
12 changed files with 196 additions and 109 deletions
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25
shaders/cloud_voxel_advect.comp
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@@ -100,6 +100,7 @@ float sample_density_trilinear(vec3 uvw, int res)
{
uvw = clamp(uvw, vec3(0.0), vec3(1.0));
int slice = res * res;
float fres = float(res);
vec3 g = uvw * (fres - 1.0);
@@ -108,16 +109,23 @@ float sample_density_trilinear(vec3 uvw, int res)
vec3 f = fract(g);
ivec3 b1 = min(base + ivec3(1), ivec3(res - 1));
ivec3 step = b1 - base; // 0 or 1 per axis
float d000 = vox_in.density[idx3(ivec3(base.x, base.y, base.z), res)];
float d100 = vox_in.density[idx3(ivec3(b1.x, base.y, base.z), res)];
float d010 = vox_in.density[idx3(ivec3(base.x, b1.y, base.z), res)];
float d110 = vox_in.density[idx3(ivec3(b1.x, b1.y, base.z), res)];
int baseIndex = base.x + base.y * res + base.z * slice;
int dx = step.x;
int dy = step.y * res;
int dz = step.z * slice;
float d001 = vox_in.density[idx3(ivec3(base.x, base.y, b1.z), res)];
float d101 = vox_in.density[idx3(ivec3(b1.x, base.y, b1.z), res)];
float d011 = vox_in.density[idx3(ivec3(base.x, b1.y, b1.z), res)];
float d111 = vox_in.density[idx3(ivec3(b1.x, b1.y, b1.z), res)];
float d000 = vox_in.density[baseIndex];
float d100 = vox_in.density[baseIndex + dx];
float d010 = vox_in.density[baseIndex + dy];
float d110 = vox_in.density[baseIndex + dy + dx];
int baseIndexZ = baseIndex + dz;
float d001 = vox_in.density[baseIndexZ];
float d101 = vox_in.density[baseIndexZ + dx];
float d011 = vox_in.density[baseIndexZ + dy];
float d111 = vox_in.density[baseIndexZ + dy + dx];
float x00 = mix(d000, d100, f.x);
float x10 = mix(d010, d110, f.x);
@@ -223,4 +231,3 @@ void main()
vox_out.density[idx3(c, res)] = out_d;
}