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Fixed mismatch between coordinates indices (rather min/max values thereof)

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Martin Opat
2025-01-11 13:26:05 +01:00
parent 4971d693fd
commit b151e70167
3 changed files with 27 additions and 16 deletions
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16
src/illumination/transferFunction.cu
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@@ -22,8 +22,8 @@ __device__ float sampleVolumeTrilinear(float* volumeData, const int volW, const
int iz = (int)floorf(fz);
// Clamp indices to valid range
int ix1 = min(ix + 1, volW - 1);
int iy1 = min(iy + 1, volH - 1);
int ix1 = min(ix + 1, volH - 1);
int iy1 = min(iy + 1, volW - 1);
int iz1 = min(iz + 1, volD - 1);
ix = max(ix, 0);
iy = max(iy, 0);
@@ -96,11 +96,12 @@ __device__ float4 transferFunction(float density, const Vec3& grad, const Point3
// TODO: Add a way to pick stops here
Color3 baseColor = colorMap(normDensity, d_stopsPythonLike, lenStopsPythonLike);
// TODO: Add a way to pick different function for alpha
float alpha = opacityFromGradient(grad);
// alpha = 0.1f;
alpha = 0.1f;
alpha = opacitySigmoid(normDensity);
float alphaSample = density * alpha; // TODO: Decide whether to keep alpha here or not
float alphaSample = density * alpha;
// --------------------------- Shading ---------------------------
// Apply Phong
@@ -114,11 +115,12 @@ __device__ float4 transferFunction(float density, const Vec3& grad, const Point3
result.x = shadedColor.x * alphaSample;
result.y = shadedColor.y * alphaSample;
result.z = shadedColor.z * alphaSample;
result.w = alpha; // TODO: Again, decide if alpha here is correct or not
result.w = alpha;
// --------------------------- Silhouettes ---------------------------
// TODO: This is the black silhouette, technically if we are doing alpha based on gradient then it's kind of redundant (?) ... but could also be used for even more pronounced edges
if (grad.length() > epsilon && fabs(grad.normalize().dot(viewDir)) < 0.2f) {
// TODO: Add a way to adjust the treshold (0.2f atm)
if (grad.length() > epsilon && fabs(grad.normalize().dot(viewDir.normalize())) < 0.2f) {
result.x = 0.0f;
result.y = 0.0f;
result.z = 0.0f;