Adding spritebatch class

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