From 8bf954dd97493facdaccc56e60cc65ea22a0fe4a Mon Sep 17 00:00:00 2001
From: Josh Holtrop <jholtrop@gmail.com>
Date: Tue, 6 Mar 2012 22:47:16 -0500
Subject: [PATCH] add opengl

---
 Makefile   |  4 +--
 opengl.cpp | 87 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 89 insertions(+), 2 deletions(-)
 create mode 100644 opengl.cpp

diff --git a/Makefile b/Makefile
index 58c4102..8342f65 100644
--- a/Makefile
+++ b/Makefile
@@ -7,9 +7,9 @@ CXX := $(PREFIX)-g++
 LD := $(PREFIX)-ld
 CPPFLAGS := -I$(SFML_DIR)/include
 CXXFLAGS := -mwindows
-LDFLAGS := -L$(SFML_DIR)/lib -lsfml-system -lsfml-window -static-libstdc++ -static-libgcc -mwindows
+LDFLAGS := -L$(SFML_DIR)/lib -lsfml-system -lsfml-window -lopengl32 -lglu32 -static-libstdc++ -static-libgcc -mwindows
 
-all: clock window events dlls
+all: clock window events opengl dlls
 
 %: %.cpp
 	$(CXX) -o $@ $(CPPFLAGS) $(CXXFLAGS) $^ $(LDFLAGS)
diff --git a/opengl.cpp b/opengl.cpp
new file mode 100644
index 0000000..185af7f
--- /dev/null
+++ b/opengl.cpp
@@ -0,0 +1,87 @@
+
+#include <SFML/Window.hpp>
+
+int main()
+{
+    sf::Clock Clock;
+    sf::Window App(sf::VideoMode(800, 600, 32), "SFML OpenGL");
+    App.UseVerticalSync(true);
+    App.SetActive();
+
+    // Set color and depth clear value
+    glClearDepth(1.f);
+    glClearColor(0.f, 0.f, 0.f, 0.f);
+
+    // Enable Z-buffer read and write
+    glEnable(GL_DEPTH_TEST);
+    glDepthMask(GL_TRUE);
+
+    // Setup a perspective projection
+    glMatrixMode(GL_PROJECTION);
+    glLoadIdentity();
+    gluPerspective(90.f, 1.f, 1.f, 500.f);
+
+    while (App.IsOpened())
+    {
+        sf::Event Event;
+        while (App.GetEvent(Event))
+        {
+            if (Event.Type == sf::Event::Closed)
+                App.Close();
+
+            if ( (Event.Type == sf::Event::KeyPressed)
+                    && (Event.Key.Code == sf::Key::Escape) )
+                App.Close();
+
+            if (Event.Type == sf::Event::Resized)
+                glViewport(0, 0, Event.Size.Width, Event.Size.Height);
+
+        }
+
+        glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+        glMatrixMode(GL_MODELVIEW);
+        glLoadIdentity();
+        glTranslatef(0.f, 0.f, -200.f);
+        glRotatef(Clock.GetElapsedTime() * 50, 1.f, 0.f, 0.f);
+        glRotatef(Clock.GetElapsedTime() * 30, 0.f, 1.f, 0.f);
+        glRotatef(Clock.GetElapsedTime() * 90, 0.f, 0.f, 1.f);
+
+        glBegin(GL_QUADS);
+
+            glVertex3f(-50.f, -50.f, -50.f);
+            glVertex3f(-50.f,  50.f, -50.f);
+            glVertex3f( 50.f,  50.f, -50.f);
+            glVertex3f( 50.f, -50.f, -50.f);
+
+            glVertex3f(-50.f, -50.f, 50.f);
+            glVertex3f(-50.f,  50.f, 50.f);
+            glVertex3f( 50.f,  50.f, 50.f);
+            glVertex3f( 50.f, -50.f, 50.f);
+
+            glVertex3f(-50.f, -50.f, -50.f);
+            glVertex3f(-50.f,  50.f, -50.f);
+            glVertex3f(-50.f,  50.f,  50.f);
+            glVertex3f(-50.f, -50.f,  50.f);
+
+            glVertex3f(50.f, -50.f, -50.f);
+            glVertex3f(50.f,  50.f, -50.f);
+            glVertex3f(50.f,  50.f,  50.f);
+            glVertex3f(50.f, -50.f,  50.f);
+
+            glVertex3f(-50.f, -50.f,  50.f);
+            glVertex3f(-50.f, -50.f, -50.f);
+            glVertex3f( 50.f, -50.f, -50.f);
+            glVertex3f( 50.f, -50.f,  50.f);
+
+            glVertex3f(-50.f, 50.f,  50.f);
+            glVertex3f(-50.f, 50.f, -50.f);
+            glVertex3f( 50.f, 50.f, -50.f);
+            glVertex3f( 50.f, 50.f,  50.f);
+
+        glEnd();
+
+        App.Display();
+    }
+
+    return EXIT_SUCCESS;
+}