Texture.readData

src/graphics/Texture.cpp

@@ -1,6 +1,7 @@
 #include "Texture.h"
 #include <GL/glew.h>
 #include <stdexcept>
+#include <memory>
 
 #include "ImageData.h"
 
@@ -37,6 +38,14 @@ void Texture::reload(ubyte* data){
     glBindTexture(GL_TEXTURE_2D, 0);
 }
 
+ImageData* Texture::readData() {
+    std::unique_ptr<ubyte[]> data (new ubyte[width * height * 4]);
+    glBindTexture(GL_TEXTURE_2D, id);
+    glGetTexImage(GL_TEXTURE_2D, 0, GL_RGBA, GL_UNSIGNED_BYTE, data.get());
+    glBindTexture(GL_TEXTURE_2D, 0);
+    return new ImageData(ImageFormat::rgba8888, width, height, data.release());
+}
+
 Texture* Texture::from(const ImageData* image) {
     uint width = image->getWidth();
     uint height = image->getHeight();

src/graphics/Texture.h

@@ -18,6 +18,8 @@ public:
 	void bind();
 	void reload(ubyte* data);
 
+    ImageData* readData();
+
 	static Texture* from(const ImageData* image);
 };