Fix crash when expanding glyph cache beyond one texture

The textureInfo() function was returning pointers to the
m_textures array, which would then be stored in the
m_glyphTextures map and other places in the renderer.
Then the function then later resized it, the renderer
would be riddled with dangling pointers and crash pretty
quickly.

There is a preset maximum texture count, so we just make
sure the array is the correct size to begin with and
never resize it.

In addition, this contains a port of
46d72a117df642135718b38995346267312c4808 and
9a53834f1e7fce2fc3b1ecc2a311faedbc371d37 from Qt Quick.

Note: Glyph recycling does not seem to work, so you may end
up running out of cache space. However, it will no longer crash,
but glyphs will be missing instead.

Fixes: QT3DS-4235
Change-Id: I7d9707ff95ac0838e7e6574714a06ac1c23986fa
Reviewed-by: Janne Koskinen <janne.p.koskinen@qt.io>

0 files changed, 0 insertions, 0 deletions