/* ** emptytexture.cpp ** Texture class for empty placeholder textures ** (essentially patches with dimensions and offsets of (0,0) ) ** These need special treatment because a texture size of 0 is illegal ** **--------------------------------------------------------------------------- ** Copyright 2009 Christoph Oelckers ** All rights reserved. ** ** Redistribution and use in source and binary forms, with or without ** modification, are permitted provided that the following conditions ** are met: ** ** 1. Redistributions of source code must retain the above copyright ** notice, this list of conditions and the following disclaimer. ** 2. Redistributions in binary form must reproduce the above copyright ** notice, this list of conditions and the following disclaimer in the ** documentation and/or other materials provided with the distribution. ** 3. The name of the author may not be used to endorse or promote products ** derived from this software without specific prior written permission. ** ** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR ** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES ** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. ** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, ** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT ** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF ** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. **--------------------------------------------------------------------------- ** ** */ #include "files.h" #include "filesystem.h" #include "image.h" //========================================================================== // // // //========================================================================== class FEmptyTexture : public FImageSource { public: FEmptyTexture (int lumpnum); TArray<uint8_t> CreatePalettedPixels(int conversion) override; }; //========================================================================== // // // //========================================================================== FImageSource *EmptyImage_TryCreate(FileReader & file, int lumpnum) { char check[8]; if (file.GetLength() != 8) return NULL; file.Seek(0, FileReader::SeekSet); if (file.Read(check, 8) != 8) return NULL; if (memcmp(check, "\0\0\0\0\0\0\0\0", 8)) return NULL; return new FEmptyTexture(lumpnum); } FImageSource* CreateEmptyTexture() { return new FEmptyTexture(0); } //========================================================================== // // // //========================================================================== FEmptyTexture::FEmptyTexture (int lumpnum) : FImageSource(lumpnum) { bMasked = true; Width = Height = 1; bUseGamePalette = true; } //========================================================================== // // // //========================================================================== TArray<uint8_t> FEmptyTexture::CreatePalettedPixels(int conversion) { TArray<uint8_t> Pixel(1, true); Pixel[0] = 0; return Pixel; }