diff options
Diffstat (limited to 'indra/llprimitive/llmodel.cpp')
| -rw-r--r-- | indra/llprimitive/llmodel.cpp | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/indra/llprimitive/llmodel.cpp b/indra/llprimitive/llmodel.cpp index 285c5f656b..1ce287d773 100644 --- a/indra/llprimitive/llmodel.cpp +++ b/indra/llprimitive/llmodel.cpp @@ -187,6 +187,15 @@ void LLModel::trimVolumeFacesToSize(U32 new_count, LLVolume::face_list_t* remain } } +// generate mikkt space tangents and cache optimize +void LLModel::preprocessVolumeFaces() +{ + for (auto& face : mVolumeFaces) + { + face.cacheOptimize(); + } +} + // Shrink the model to fit // on a 1x1x1 cube centered at the origin. // The positions and extents @@ -296,6 +305,7 @@ void LLModel::normalizeVolumeFaces() // the positions to fit within the unit cube. LLVector4a* pos = (LLVector4a*) face.mPositions; LLVector4a* norm = (LLVector4a*) face.mNormals; + LLVector4a* t = (LLVector4a*)face.mMikktSpaceTangents; for (U32 j = 0; j < face.mNumVertices; ++j) { @@ -306,6 +316,14 @@ void LLModel::normalizeVolumeFaces() norm[j].mul(inv_scale); norm[j].normalize3(); } + + if (t) + { + F32 w = t[j].getF32ptr()[3]; + t[j].mul(inv_scale); + t[j].normalize3(); + t[j].getF32ptr()[3] = w; + } } } @@ -726,10 +744,12 @@ LLSD LLModel::writeModel( LLSD::Binary verts(face.mNumVertices*3*2); LLSD::Binary tc(face.mNumVertices*2*2); LLSD::Binary normals(face.mNumVertices*3*2); + LLSD::Binary tangents(face.mNumVertices * 4 * 2); LLSD::Binary indices(face.mNumIndices*2); U32 vert_idx = 0; U32 norm_idx = 0; + U32 tan_idx = 0; U32 tc_idx = 0; LLVector2* ftc = (LLVector2*) face.mTexCoords; @@ -782,6 +802,22 @@ LLSD LLModel::writeModel( normals[norm_idx++] = buff[1]; } } + + if (face.mMikktSpaceTangents) + { //normals + F32* tangent = face.mMikktSpaceTangents[j].getF32ptr(); + + for (U32 k = 0; k < 4; ++k) + { //for each component + //convert to 16-bit normalized + U16 val = (U16)((tangent[k] + 1.f) * 0.5f * 65535); + U8* buff = (U8*)&val; + + //write to binary buffer + tangents[tan_idx++] = buff[0]; + tangents[tan_idx++] = buff[1]; + } + } //texcoord if (face.mTexCoords) @@ -819,6 +855,11 @@ LLSD LLModel::writeModel( mdl[model_names[idx]][i]["Normal"] = normals; } + if (face.mMikktSpaceTangents) + { + mdl[model_names[idx]][i]["Tangent"] = tangents; + } + if (face.mTexCoords) { mdl[model_names[idx]][i]["TexCoord0Domain"]["Min"] = min_tc.getValue(); |