60 lines
1.5 KiB
C++
60 lines
1.5 KiB
C++
#include <iostream>
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#include <cstdlib>
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#include <pnglite.h>
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#include "pheromone.hpp"
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PheromoneMap::PheromoneMap(const char * file_name) {
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load_map(file_name);
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sem_init(&map_semaphore, 0, 1);
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tex_created = false;
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}
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PheromoneMap::~PheromoneMap() {
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free(data);
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sem_destroy(&map_semaphore);
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if(tex_created) {
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glActiveTexture(GL_TEXTURE0);
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glBindTexture(GL_TEXTURE_2D, handle);
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glDeleteTextures(1, &handle);
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}
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}
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void PheromoneMap::load_map(const char * file_name) {
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png_t tex;
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png_init(0, 0);
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png_open_file_read(&tex, file_name);
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data = (unsigned char*) malloc(tex.width * tex.height * tex.bpp);
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png_get_data(&tex, data);
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std::cout << "Loaded map \"" << file_name << "\" :: " << tex.width << "x" << tex.height << "x" << (int)tex.bpp << std::endl;
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m_width = tex.width;
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m_height = tex.height;
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m_bpp = tex.bpp;
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png_close_file(&tex);
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}
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GLuint PheromoneMap::s_build_texture() {
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sem_wait(&map_semaphore); {
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if(tex_created) {
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glActiveTexture(GL_TEXTURE0);
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glBindTexture(GL_TEXTURE_2D, handle);
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glDeleteTextures(1, &handle);
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}
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glGenTextures(1, &handle);
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glActiveTexture(GL_TEXTURE0);
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glBindTexture(GL_TEXTURE_2D, handle);
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glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, m_width, m_height, 0, GL_RGB, GL_UNSIGNED_BYTE, data);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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tex_created = true;
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} sem_post(&map_semaphore);
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return handle;
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}
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