/* The MIT License * * Copyright (c) 2010 OTClient, https://github.com/edubart/otclient * * 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. */ #include #include #include "graphics.h" Texture::Texture(int width, int height, int channels, uchar *pixels) { // generate opengl texture m_textureId = internalLoadGLTexture(pixels, channels, width, height); } uint Texture::internalLoadGLTexture(uchar *pixels, int channels, int width, int height) { GLint texSize; glGetIntegerv(GL_MAX_TEXTURE_SIZE, &texSize); if(width > texSize || height > texSize) { flogError("loading texture with size %dx%d failed, the maximum size is %dx%d", width % height % texSize % texSize); return 0; } // generate gl texture GLuint id; glGenTextures(1, &id); glBindTexture(GL_TEXTURE_2D, id); m_size.setSize(width, height); bool mustFree = false; if(!g_graphics.isExtensionSupported("GL_ARB_texture_non_power_of_two") && pixels) { int glWidth = 1; while(glWidth < width) glWidth = glWidth << 1; int glHeight = 1; while(glHeight < height) glHeight = glHeight << 1; if(m_size != m_glSize) { uchar *tmp = new uchar[glHeight*glWidth*channels]; memset(tmp, 0, glHeight*glWidth*channels); if(pixels) for(int y=0;y