Remove display lists and refactor ready for ES/ES2 port

Display lists, and a few other features dont work in ES/ES2.  Refaoctor to
allow redo of lighting and other non-fixed-function pipeline features.
Also use QAnimation* classes instead of timers, and correct a few minor
bugs (flipped texture).  Include new screenshot (old one manifested bug).

Reviewed-by: Rhys Weatherley

1 files changed, 30 insertions, 13 deletions

diff --git a/examples/opengl/pbuffers/glwidget.h b/examples/opengl/pbuffers/glwidget.h
index 5b64b08..991e8b9 100644
--- a/examples/opengl/pbuffers/glwidget.h
+++ b/examples/opengl/pbuffers/glwidget.h
@@ -39,32 +39,49 @@
 **
 ****************************************************************************/
 
-#include <QtOpenGL>
+#ifndef GLWIDGET_H
+#define GLWIDGET_H
+
+#include <QGLWidget>
+
+class Geometry;
+class Cube;
+class Tile;
 
 class GLWidget : public QGLWidget
 {
 public:
-    GLWidget(QWidget *parent);
+    GLWidget(QWidget *parent = 0);
     ~GLWidget();
+
+protected:
     void initializeGL();
-    void resizeGL(int w, int h);
     void paintGL();
-    void timerEvent(QTimerEvent *) { update(); }
-    void mousePressEvent(QMouseEvent *) { killTimer(timerId); }
-    void mouseReleaseEvent(QMouseEvent *) { timerId = startTimer(20); }
+    void resizeGL(int width, int height);
+    void mousePressEvent(QMouseEvent *) { setAnimationPaused(true); }
+    void mouseReleaseEvent(QMouseEvent *) { setAnimationPaused(false); }
 
-    void drawCube(int i, GLfloat z, GLfloat ri, GLfloat jmp, GLfloat amp);
-    void initCommon();
+private:
+    void initializeGeometry();
     void initPbuffer();
+    void initCommon();
+    void perspectiveProjection();
+    void orthographicProjection();
+    void drawPbuffer();
+    void setAnimationPaused(bool enable);
 
-private:
-    GLfloat rot[3], xOffs[3], yOffs[3], xInc[3];
-    GLuint pbufferList;
+    qreal aspect;
     GLuint dynamicTexture;
     GLuint cubeTexture;
-    int timerId;
     bool hasDynamicTextureUpdate;
-
     QGLPixelBuffer *pbuffer;
+    Geometry *geom;
+    Cube *cube;
+    Tile *backdrop;
+    QList<Cube *> cubes;
+    QList<Tile *> tiles;
+
 };
+//! [3]
 
+#endif