1 files changed, 65 insertions, 2 deletions

diff --git a/mogltk/glbase.cpp b/mogltk/glbase.cpp
index 71fcaa0..b2512ca 100644
--- a/mogltk/glbase.cpp
+++ b/mogltk/glbase.cpp
@@ -4,7 +4,7 @@
 #include <SDL.h>
 #include <SDL_opengl.h>
 
-int mogltk::glbase::width, mogltk::glbase::height, mogltk::glbase::inited = 0;
+int mogltk::glbase::width, mogltk::glbase::height, mogltk::glbase::inited = 0, mogltk::glbase::twoD = 0;
 SDL_Surface * mogltk::glbase::surface = 0;
 
 int mogltk::glbase::setup(int w, int h, int flags) throw(GeneralException) {
@@ -25,7 +25,10 @@ int mogltk::glbase::setup(int w, int h, int flags) throw(GeneralException) {
         throw GeneralException(String("Couldn't set GL mode: ") + SDL_GetError());
     }
 
-    printm(M_INFO, "Video resolution: %dx%dx%d\n", surface->w, surface->h, surface->format->BitsPerPixel);
+    float ratio = surface->w;
+    ratio /= surface->h;
+
+    printm(M_INFO, "Video resolution: %dx%dx%d (ratio = %3.2f)\n", surface->w, surface->h, surface->format->BitsPerPixel, ratio);
     printm(M_INFO, "\n");
     printm(M_INFO, "OpenGL infos\n");
     printm(M_INFO, "------------\n");
@@ -35,6 +38,27 @@ int mogltk::glbase::setup(int w, int h, int flags) throw(GeneralException) {
     printm(M_INFO, String("Extensions: ") + (char *) glGetString(GL_EXTENSIONS) + "\n");
 
     inited = 1;
+    
+    glViewport(0, 0, surface->w, surface->h);
+
+    glCullFace(GL_BACK);
+    glFrontFace(GL_CCW);
+    glEnable(GL_CULL_FACE);
+
+    glClearColor(0, 0, 0, 0);
+    glShadeModel(GL_SMOOTH);
+
+    glEnable(GL_DEPTH_TEST);
+    glDepthFunc(GL_LEQUAL);
+    glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
+
+    glMatrixMode(GL_PROJECTION);
+    glLoadIdentity();
+    gluPerspective(60.0, ratio, 1.0, 1024.0);
+
+    glMatrixMode(GL_MODELVIEW);
+    glLoadIdentity();
+    
     return 0;
 }
 
@@ -49,3 +73,42 @@ int mogltk::glbase::GetHeight(void) {
 int mogltk::glbase::GetInited(void) {
     return inited;
 }
+
+void mogltk::glbase::Enter2DMode(void) {
+    if (twoD)
+	return;
+    
+    glPushAttrib(GL_ENABLE_BIT);
+    glDisable(GL_DEPTH_TEST);
+    glDisable(GL_CULL_FACE);
+    glEnable(GL_TEXTURE_2D);
+    glEnable(GL_BLEND);
+    glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+    
+    glMatrixMode(GL_PROJECTION);
+    glPushMatrix();
+    glLoadIdentity();
+    glOrtho(0.0, width, height, 0.0, 0.0, 1.0);
+    
+    glMatrixMode(GL_MODELVIEW);
+    glPushMatrix();
+    glLoadIdentity();
+    
+    glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL);
+    
+    twoD = 1;
+}
+
+void mogltk::glbase::Leave2DMode(void) {
+    if (!twoD)
+	return;
+    
+    glMatrixMode(GL_MODELVIEW);
+    glPopMatrix();
+    glMatrixMode(GL_PROJECTION);
+    glPopMatrix();
+    
+    glPopAttrib();
+    
+    twoD = 0;
+}