134 lines
3.5 KiB
C++
134 lines
3.5 KiB
C++
/*
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Copyright (C) 2003, 2010 - Wolfire Games
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Copyright (C) 2010-2017 - Lugaru contributors (see AUTHORS file)
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This file is part of Lugaru.
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Lugaru is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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Lugaru is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Lugaru. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "Graphic/Texture.hpp"
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#include "Utils/Folders.hpp"
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#include "Utils/ImageIO.hpp"
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using namespace std;
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extern bool trilinear;
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void TextureRes::load()
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{
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ImageRec texture;
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//load image into 'texture'
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if (!load_image(filename.c_str(), texture)) {
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cerr << "Texture " << filename << " loading failed" << endl;
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return;
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}
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skinsize = texture.sizeX;
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GLuint type = GL_RGBA;
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if (texture.bpp == 24) {
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type = GL_RGB;
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}
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glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
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glDeleteTextures(1, &id);
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glGenTextures(1, &id);
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glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
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glBindTexture(GL_TEXTURE_2D, id);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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if (hasMipmap) {
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, (trilinear ? GL_LINEAR_MIPMAP_LINEAR : GL_LINEAR_MIPMAP_NEAREST));
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glTexParameteri(GL_TEXTURE_2D, GL_GENERATE_MIPMAP, GL_TRUE);
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} else {
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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}
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if (isSkin) {
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free(data);
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const int nb = texture.sizeY * texture.sizeX * (texture.bpp / 8);
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data = (GLubyte*)malloc(nb * sizeof(GLubyte));
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datalen = 0;
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for (int i = 0; i < nb; i++) {
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if ((i + 1) % 4 || type == GL_RGB) {
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data[datalen++] = texture.data[i];
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}
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}
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glTexImage2D(GL_TEXTURE_2D, 0, type, texture.sizeX, texture.sizeY, 0, GL_RGB, GL_UNSIGNED_BYTE, data);
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} else {
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glTexImage2D(GL_TEXTURE_2D, 0, type, texture.sizeX, texture.sizeY, 0, type, GL_UNSIGNED_BYTE, texture.data);
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}
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}
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void TextureRes::bind()
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{
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glBindTexture(GL_TEXTURE_2D, id);
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}
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TextureRes::TextureRes(const string& _filename, bool _hasMipmap)
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: id(0)
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, filename(_filename)
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, hasMipmap(_hasMipmap)
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, isSkin(false)
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, skinsize(0)
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, data(NULL)
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, datalen(0)
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{
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load();
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}
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TextureRes::TextureRes(const string& _filename, bool _hasMipmap, GLubyte* array, int* skinsizep)
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: id(0)
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, filename(_filename)
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, hasMipmap(_hasMipmap)
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, isSkin(true)
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, skinsize(0)
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, data(NULL)
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, datalen(0)
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{
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load();
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*skinsizep = skinsize;
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for (int i = 0; i < datalen; i++) {
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array[i] = data[i];
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}
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}
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TextureRes::~TextureRes()
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{
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free(data);
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glDeleteTextures(1, &id);
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}
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void Texture::load(const string& filename, bool hasMipmap)
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{
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tex.reset(new TextureRes(Folders::getResourcePath(filename), hasMipmap));
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}
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void Texture::load(const string& filename, bool hasMipmap, GLubyte* array, int* skinsizep)
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{
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tex.reset(new TextureRes(Folders::getResourcePath(filename), hasMipmap, array, skinsizep));
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}
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void Texture::bind()
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{
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if (tex) {
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tex->bind();
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} else {
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glBindTexture(GL_TEXTURE_2D, 0);
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}
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}
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