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IrrlichtMt: Implement mip-mapping for RTTs (#16434)

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This can be helpful to draw fonts memory-efficiently at varying scales.

Adds ETCF_CREATE_RTT_MIP_MAPS to generate mip-maps on request.
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SmallJoker 2025-09-04 18:58:23 +02:00 • committed by GitHub
parent e86d2fea8d
commit 024e1d2d27
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5 changed files with 43 additions and 44 deletions
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5
irr/include/ITexture.h
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@ -66,6 +66,11 @@ enum E_TEXTURE_CREATION_FLAG
not recommended to enable this flag. */
ETCF_NO_ALPHA_CHANNEL = 0x00000020,
/** Creates Render Target Textures with mipmap levels.
See also: `ETCF_CREATE_MIP_MAPS` for other textures.
This is disabled by default. */
ETCF_CREATE_RTT_MIP_MAPS = 0x00000040,
//! Allow the driver to keep a copy of the texture in memory
/** Enabling this makes calls to ITexture::lock a lot faster, but costs main memory.
This is disabled by default.