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Cleanup.

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This commit is contained in:
Branimir Karadžić
2018-12-10 19:39:00 -08:00
parent d95a7bd4b8
commit 0740b29de7
5 changed files with 39 additions and 54 deletions
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30
examples/common/bgfx_utils.cpp
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@@ -285,13 +285,13 @@ void calcTangents(void* _vertices, uint16_t _numVertices, bgfx::VertexDecl _decl
uint32_t i1 = indices[1];
uint32_t i2 = indices[2];
bgfx::vertexUnpack(&v0.m_x, bgfx::Attrib::Position, _decl, _vertices, i0);
bgfx::vertexUnpack(&v0.m_x, bgfx::Attrib::Position, _decl, _vertices, i0);
bgfx::vertexUnpack(&v0.m_u, bgfx::Attrib::TexCoord0, _decl, _vertices, i0);
bgfx::vertexUnpack(&v1.m_x, bgfx::Attrib::Position, _decl, _vertices, i1);
bgfx::vertexUnpack(&v1.m_x, bgfx::Attrib::Position, _decl, _vertices, i1);
bgfx::vertexUnpack(&v1.m_u, bgfx::Attrib::TexCoord0, _decl, _vertices, i1);
bgfx::vertexUnpack(&v2.m_x, bgfx::Attrib::Position, _decl, _vertices, i2);
bgfx::vertexUnpack(&v2.m_x, bgfx::Attrib::Position, _decl, _vertices, i2);
bgfx::vertexUnpack(&v2.m_u, bgfx::Attrib::TexCoord0, _decl, _vertices, i2);
const float bax = v1.m_x - v0.m_x;
@@ -333,25 +333,21 @@ void calcTangents(void* _vertices, uint16_t _numVertices, bgfx::VertexDecl _decl
for (uint32_t ii = 0; ii < _numVertices; ++ii)
{
const float* tanu = &tangents[ii*6];
const float* tanv = &tangents[ii*6 + 3];
const bx::Vec3 tanu = bx::load(&tangents[ii*6]);
const bx::Vec3 tanv = bx::load(&tangents[ii*6 + 3]);
float normal[4];
bgfx::vertexUnpack(normal, bgfx::Attrib::Normal, _decl, _vertices, ii);
float ndt = bx::vec3Dot(normal, tanu);
float nxyzw[4];
bgfx::vertexUnpack(nxyzw, bgfx::Attrib::Normal, _decl, _vertices, ii);
float nxt[3];
bx::vec3Cross(nxt, normal, tanu);
float tmp[3];
tmp[0] = tanu[0] - normal[0] * ndt;
tmp[1] = tanu[1] - normal[1] * ndt;
tmp[2] = tanu[2] - normal[2] * ndt;
const bx::Vec3 normal = bx::load(nxyzw);
const float ndt = bx::dot(normal, tanu);
const bx::Vec3 nxt = bx::cross(normal, tanu);
const bx::Vec3 tmp = bx::sub(tanu, bx::mul(normal, ndt) );
float tangent[4];
bx::vec3Norm(tangent, tmp);
bx::store(tangent, bx::normalize(tmp) );
tangent[3] = bx::dot(nxt, tanv) < 0.0f ? -1.0f : 1.0f;
tangent[3] = bx::vec3Dot(nxt, tanv) < 0.0f ? -1.0f : 1.0f;
bgfx::vertexPack(tangent, true, bgfx::Attrib::Tangent, _decl, _vertices, ii);
}