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[about] This package includes code to import/export the texgz image format into Gimp (via a plugin) or other apps. The texgz format is specifically designed to work well with OpenGL ES and uses zlib for lossless compression. The following formats are supported by texgz: RGBA-8888, RGB-888, BGRA-8888, RGB-565, RGBA-4444, RGBA-5551 For more information contact: Jeff Boody - email@example.com [example using texgz as a texture in OpenGL ES] // width/height may not equal stride/vstride for power-of-two textures // and you may need to adjust texture coordinates accordingly texgz_tex_t* tex = texgz_tex_import("sample.texgz"); glTexImage2D(GL_TEXTURE_2D, 0, tex->format, tex->stride, tex->vstride, 0, tex->format, tex->type, tex->pixels); texgz_tex_delete(tex); [example using texgz to save a screenshot in OpenGL ES] glPixelStorei(GL_UNPACK_ALIGNMENT, 1); glGetIntegerv(GL_IMPLEMENTATION_COLOR_READ_FORMAT, &format); glGetIntegerv(GL_IMPLEMENTATION_COLOR_READ_TYPE, &type); texgz_tex_t* tex = texgz_tex_new(width, height, width, height, type, format, NULL); glReadPixels(0, 0, width, height, format, type, (void*) tex->pixels); texgz_tex_flipvertical(tex); texgz_tex_export(tex, "sample.texgz"); texgz_tex_delete(&tex); [resources] http://developer.gimp.org/api/2.0/libgimp/libgimp.html # Gimp documentation is difficult to search on the website but you can # enter the following search string in Google as a workaround site:http://developer.gimp.org <function> # texgz plugin was based loosely on the pnm plugin http://gimp.sourcearchive.com/documentation/2.6.5/file-pnm_8c-source.html [install the Gimp plugin] # requires libgimp2.0-dev sudo apt-get install libgimp2.0-dev ./build-plugin.sh [license] Copyright (c) 2011 Jeff Boody Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.