multitexture.cpp
上传用户:center1979
上传日期:2022-07-26
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文件大小:3k
- // multirestexture.cpp
- //
- // Copyright (C) 2002 Deon Ramsey <dramsey@sourceforge.net>
- //
- // This program is free software; you can redistribute it and/or
- // modify it under the terms of the GNU General Public License
- // as published by the Free Software Foundation; either version 2
- // of the License, or (at your option) any later version.
- #include "multitexture.h"
- #include "texmanager.h"
- #include <celutil/debug.h>
- using namespace std;
- MultiResTexture::MultiResTexture()
- {
- tex[lores] = InvalidResource;
- tex[medres] = InvalidResource;
- tex[hires] = InvalidResource;
- }
- MultiResTexture::MultiResTexture(ResourceHandle loTex,
- ResourceHandle medTex,
- ResourceHandle hiTex)
- {
- tex[lores] = loTex;
- tex[medres] = medTex;
- tex[hires] = hiTex;
- }
- MultiResTexture::MultiResTexture(const string& source,
- const string& path)
- {
- setTexture(source, path);
- }
- void MultiResTexture::setTexture(const string& source, const string& path,
- unsigned int flags)
- {
- TextureManager* texMan = GetTextureManager();
- tex[lores] = texMan->getHandle(TextureInfo(source, path, flags, lores));
- tex[medres] = texMan->getHandle(TextureInfo(source, path, flags, medres));
- tex[hires] = texMan->getHandle(TextureInfo(source, path, flags, hires));
- }
- void MultiResTexture::setTexture(const string& source, const string& path,
- float bumpHeight, unsigned int flags)
- {
- TextureManager* texMan = GetTextureManager();
- tex[lores] = texMan->getHandle(TextureInfo(source, path, bumpHeight, flags, lores));
- tex[medres] = texMan->getHandle(TextureInfo(source, path, bumpHeight, flags, medres));
- tex[hires] = texMan->getHandle(TextureInfo(source, path, bumpHeight, flags, hires));
- }
- Texture* MultiResTexture::find(unsigned int resolution)
- {
- TextureManager* texMan = GetTextureManager();
- Texture* res = texMan->find(tex[resolution]);
- if (res != NULL)
- return res;
- // Preferred resolution isn't available; try the second choice
- // Set these to some defaults to avoid GCC complaints
- // about possible uninitialized variable usage:
- unsigned int secondChoice = medres;
- unsigned int lastResort = hires;
- switch (resolution)
- {
- case lores:
- secondChoice = medres;
- lastResort = hires;
- break;
- case medres:
- secondChoice = lores;
- lastResort = hires;
- break;
- case hires:
- secondChoice = medres;
- lastResort = lores;
- break;
- }
- tex[resolution] = tex[secondChoice];
- res = texMan->find(tex[resolution]);
- if (res != NULL)
- return res;
- tex[resolution] = tex[lastResort];
- return texMan->find(tex[resolution]);
- }
- bool MultiResTexture::isValid() const
- {
- return (tex[lores] != InvalidResource ||
- tex[medres] != InvalidResource ||
- tex[hires] != InvalidResource);
- }