1. we don't need it
2. it's dropped in SDL 3
3. it breaks compilation on Alpine and postmarketOS with SDL2 enabled
(and the bug never going to get fixed on SDL2 side)
Signed-off-by: David Heidelberg <david@ixit.cz>
Minetest using RTTI, so we cannot apply the flag here
if we want to start using IPO/LTO.
If we keep `-fno-rtti` here, compiler loses part of informations and
cannot do efficient optimizations.
The benefit of using RTTI on Irrlicht disappears with IPO/LTO on whole binary.
Signed-off-by: David Heidelberg <david@ixit.cz>
The size of a mip map is `max{floor(width / 2 ^ level), 1} x max{floor(height / 2 ^ level), 1}`,
where `width x height` is the size of the full-resolution image,
`level` is the integer mip map level
and the smallest mip map has `1 x 1` resolution.
If `regenerateMipMapLevels` is called with custom mip map data,
the mip map sizes are calculated in this function and separately in `uploadTexture`.
`uploadTexture` calculates a size by `floor(width / 2 ^ level) x floor(height / 2 ^ level)`.
To support non-square textures, after this change,
`uploadTexture` sets the mip map width or height to `1` if it is `0`.
The irrString implementation doesn't allow constructing a string with a
size that would exceed a u32, so it should be safe to narrow the size of
the underlying STL container back to a u32.
This fixes 5 narrowing cast warnings from Visual Studio 17 2022.
it's enabled inconditionally on android
also remove some _IRR_COMPILE_WITH_ANDROID_DEVICE_ which are useless because cmake is already properly configured
Rest of Irrlicht is using left-handed rotatations.
But 2d vector rotations all uses ccw which is kinda the same direction as this one if you consider those as rotations around Y, so I guess that was maybe the reason back then.
git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@6536 dfc29bdd-3216-0410-991c-e03cc46cb475
