1 files changed, 53 insertions, 0 deletions
diff --git a/apps/openmb/renderer/Texture.cpp b/apps/openmb/renderer/Texture.cpp
new file mode 100644
index 0000000..e551f86
--- /dev/null
+++ b/apps/openmb/renderer/Texture.cpp
@@ -0,0 +1,53 @@
+#define STB_IMAGE_IMPLEMENTATION
+#include <stb_image.h>
+
+#include "Texture.hpp"
+
+#include <iostream>
+
+namespace renderer {
+Texture::Texture () : mID( 0 ) {}
+
+Texture::~Texture () {
+    if( mID )
+        glDeleteTextures( 1, &mID );
+}
+
+bool Texture::loadFromFile ( const std::string& path, bool flip ) {
+    stbi_set_flip_vertically_on_load( flip );
+    int            w, h, channels;
+    unsigned char* data = stbi_load( path.c_str(), &w, &h, &channels, 0 );
+    if( !data ) {
+        std::cerr << "Failed to load texture: " << path << std::endl;
+        return false;
+    }
+
+    GLenum format = GL_RGB;
+    if( channels == 1 )
+        format = GL_RED;
+    else if( channels == 3 )
+        format = GL_RGB;
+    else if( channels == 4 )
+        format = GL_RGBA;
+
+    glGenTextures( 1, &mID );
+    glBindTexture( GL_TEXTURE_2D, mID );
+    glTexImage2D( GL_TEXTURE_2D, 0, format, w, h, 0, format, GL_UNSIGNED_BYTE, data );
+    glGenerateMipmap( GL_TEXTURE_2D );
+
+    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_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR );
+    glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR );
+
+    stbi_image_free( data );
+    glBindTexture( GL_TEXTURE_2D, 0 );
+    return true;
+}
+
+void Texture::bind ( unsigned unit ) const {
+    glActiveTexture( GL_TEXTURE0 + unit );
+    glBindTexture( GL_TEXTURE_2D, mID );
+}
+
+}   // namespace renderer