Adding OpenGL support to the Bitmap object

src/Application/Graphics/Bitmap.cc

@@ -1 +1,47 @@
-#include "Bitmap.h"
+#include "Bitmap.h"
+
+namespace yaze {
+namespace Application {
+namespace Graphics {
+
+Bitmap::Bitmap() {}
+
+// Simple helper function to load an image into a OpenGL texture with common
+// settings
+bool Bitmap::LoadBitmapFromROM(unsigned char* texture_data, GLuint* out_texture,
+                               int* out_width, int* out_height) {
+  // Load from file
+  int image_width = 0;
+  int image_height = 0;
+  if (texture_data == NULL) return false;
+
+  // Create a OpenGL texture identifier
+  GLuint image_texture;
+  glGenTextures(1, &image_texture);
+  glBindTexture(GL_TEXTURE_2D, image_texture);
+
+  // Setup filtering parameters for display
+  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S,
+                  GL_CLAMP_TO_EDGE);  // This is required on WebGL for non
+                                      // power-of-two textures
+  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);  // Same
+
+  // Upload pixels into texture
+#if defined(GL_UNPACK_ROW_LENGTH) && !defined(__EMSCRIPTEN__)
+  glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
+#endif
+  glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, image_width, image_height, 0, GL_RGBA,
+               GL_UNSIGNED_BYTE, texture_data);
+
+  *out_texture = image_texture;
+  *out_width = image_width;
+  *out_height = image_height;
+
+  return true;
+}
+
+}  // namespace Graphics
+}  // namespace Application
+}  // namespace yaze

src/Application/Graphics/Bitmap.h

@@ -1,14 +1,22 @@
 #ifndef YAZE_APPLICATION_UTILS_BITMAP_H
 #define YAZE_APPLICATION_UTILS_BITMAP_H
 
+#include "GL/glew.h"
+#include <SDL2/SDL_opengl.h>
+
+#include "Utils/ROM.h"
+
 namespace yaze {
 namespace Application {
-namespace Utils {
+namespace Graphics {
 class Bitmap {
+ public:
+  Bitmap();
 
-  
+  bool LoadBitmapFromROM(unsigned char* texture_data, GLuint* out_texture,
+                         int* out_width, int* out_height);
 };
-}  // namespace Utils
+}  // namespace Graphics
 }  // namespace Application
 }  // namespace yaze