diff options
Diffstat (limited to 'src/imageloader.cpp')
-rw-r--r-- | src/imageloader.cpp | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/src/imageloader.cpp b/src/imageloader.cpp new file mode 100644 index 00000000..8325b7f6 --- /dev/null +++ b/src/imageloader.cpp @@ -0,0 +1,45 @@ +#include "imageloader.hpp" +#include "iomanager.hpp" +#include "picopng.hpp" + +#include <stdexcept> + +namespace yage +{ + +GlTexture ImageLoader::loadPng(const std::string &file_path) +{ + GlTexture texture = {}; + + std::vector<unsigned char> in; + std::vector<unsigned char> out; + unsigned long width, height; + + if(!IoManager::readFileToBuffer(file_path, in)) + throw std::runtime_error("Failed to load '"+file_path+"' to buffer"); + + int error_code = decodePNG(out, width, height, &in[0], in.size()); + if(error_code != 0) + throw std::runtime_error("Failed to load '"+file_path+"' to png with error code"+std::to_string(error_code)); + + glGenTextures(1, &texture.id); + + glBindTexture(GL_TEXTURE_2D, texture.id); + glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, &out[0]); + + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR); + + glGenerateMipmap(GL_TEXTURE_2D); + + glBindTexture(GL_TEXTURE_2D, 0); + + texture.width = (int)width; + texture.height = (int)height; + + return texture; +} + +} // yage |