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Fix fading

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This commit is contained in:
Benau 2017-12-31 12:57:28 +08:00
parent 2bde6d1325
commit 9f8475bda1
1 changed files with 2 additions and 2 deletions
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4
src/graphics/skid_marks.cpp
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@ -258,7 +258,7 @@ void SkidMarks::SkidMarkQuads::add(const Vec3 &left,
// then when adding a new set of vertices, make the previous 2 opaque.
// this ensures that the last two vertices are always at alpha=0,
// producing a fade-out effect
if (n > 2)
if (n > 3)
{
m_dy_dc->getSPMVertex()[n - 1].m_color.setAlpha(m_start_alpha);
m_dy_dc->getSPMVertex()[n - 2].m_color.setAlpha(m_start_alpha);
@ -275,7 +275,7 @@ void SkidMarks::SkidMarkQuads::add(const Vec3 &left,
v.m_all_uvs[0] = 0;
v.m_all_uvs[1] = MiniGLM::toFloat16(distance * 0.5f);
m_dy_dc->addSPMVertex(v);
m_dy_dc->setUpdateOffset(n > 2 ? n - 2 : n);
m_dy_dc->setUpdateOffset(n > 3 ? n - 2 : n);
m_dy_dc->recalculateBoundingBox();
} // add