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[*] Format hint for embedded textures improvement.

pull/1011/head
Alexandr Arutjunov 2016-09-28 17:50:17 +03:00
parent cb38054247
commit 9069ea20fa
1 changed files with 11 additions and 4 deletions
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15
include/assimp/texture.h
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@ -147,10 +147,17 @@ struct aiTexture
unsigned int mHeight; unsigned int mHeight;
/** A hint from the loader to make it easier for applications /** A hint from the loader to make it easier for applications
* to determine the type of embedded compressed textures. * to determine the type of embedded textures.
* *
* If mHeight != 0 this member is undefined. Otherwise it * If mHeight != 0 this member is show how data is packed. Hint will consist of
* is set set to '\\0\\0\\0\\0' if the loader has no additional * two parts: channel order and channel bitness (count of the bits for every
* color channel). For simple parsing by the viewer it's better to not omit
* absent color channel and just use 0 for bitness. For example:
* 1. Image contain RGBA and 8 bit per channel, achFormatHint == "rgba8888";
* 2. Image contain ARGB and 8 bit per channel, achFormatHint == "argb8888";
* 2. Image contain RGB and 5 bit for R and B channels and 6 bit for G channel, achFormatHint == "rgba5650";
* 3. One color image with B channel and 1 bit for it, achFormatHint == "rgba0010";
* If mHeight == 0 then achFormatHint is set set to '\\0\\0\\0\\0' if the loader has no additional
* information about the texture file format used OR the * information about the texture file format used OR the
* file extension of the format without a trailing dot. If there * file extension of the format without a trailing dot. If there
* are multiple file extensions for a format, the shortest * are multiple file extensions for a format, the shortest
@ -158,7 +165,7 @@ struct aiTexture
* E.g. 'dds\\0', 'pcx\\0', 'jpg\\0'. All characters are lower-case. * E.g. 'dds\\0', 'pcx\\0', 'jpg\\0'. All characters are lower-case.
* The fourth character will always be '\\0'. * The fourth character will always be '\\0'.
*/ */
char achFormatHint[4]; char achFormatHint[9];// 8 for string + 1 for terminator.
/** Data of the texture. /** Data of the texture.
* *