janwas
a43205148b
- /* */ -> // - clarified expressions - add casts - func() -> func(void) - signed/unsigned This was SVN commit r1772.
64 lines
1.8 KiB
C
Executable File
64 lines
1.8 KiB
C
Executable File
// OpenGL texturing
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//
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// Copyright (c) 2003 Jan Wassenberg
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License as
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// published by the Free Software Foundation; either version 2 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// General Public License for more details.
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//
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// Contact info:
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// Jan.Wassenberg@stud.uni-karlsruhe.de
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// http://www.stud.uni-karlsruhe.de/~urkt/
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#ifndef __TEX_H__
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#define __TEX_H__
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#include "handle.h"
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enum TexInfoFlags
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{
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TEX_DXT = 0x07, // mask; value = {1,3,5}
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TEX_BGR = 0x08,
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TEX_ALPHA = 0x10,
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TEX_GRAY = 0x20,
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// orientation - never returned by tex_load, since it automatically
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// flips to match global orientation. these are passed to tex_write
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// to indicate the image orientation, or to tex_set_global_orientation.
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TEX_BOTTOM_UP = 0x40,
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TEX_TOP_DOWN = 0x80,
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TEX_ORIENTATION = TEX_BOTTOM_UP|TEX_TOP_DOWN // mask
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};
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// minimize size - stored in ogl tex resource control block
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struct TexInfo
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{
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Handle hm; // H_Mem handle to loaded file
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size_t ofs; // offset to image data in file
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uint w : 16;
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uint h : 16;
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uint bpp : 16;
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uint flags : 16;
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};
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extern int tex_load(const char* fn, TexInfo* ti);
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extern int tex_load_mem(Handle hm, const char* fn, TexInfo* t);
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extern int tex_free(TexInfo* ti);
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extern int tex_write(const char* fn, uint w, uint h, uint bpp, uint flags, void* img);
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extern int tex_is_known_fmt(void* p, size_t size_t);
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// param: either TEX_BOTTOM_UP or TEX_TOP_DOWN
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extern void tex_set_global_orientation(int orientation);
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#endif // __TEX_H__
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