Make OpenGL overpainting example compile under OpenGL/ES 1.1

Reviewed-by: trustme

2 files changed, 12 insertions, 5 deletions

diff --git a/examples/opengl/overpainting/glwidget.cpp b/examples/opengl/overpainting/glwidget.cpp
index 0dcccbf..f36fd4f 100644
--- a/examples/opengl/overpainting/glwidget.cpp
+++ b/examples/opengl/overpainting/glwidget.cpp
@@ -168,10 +168,10 @@ void GLWidget::paintEvent(QPaintEvent *event)
 //! [7]
     glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
     glLoadIdentity();
-    glTranslated(0.0, 0.0, -10.0);
-    glRotated(xRot / 16.0, 1.0, 0.0, 0.0);
-    glRotated(yRot / 16.0, 0.0, 1.0, 0.0);
-    glRotated(zRot / 16.0, 0.0, 0.0, 1.0);
+    glTranslatef(0.0, 0.0, -10.0);
+    glRotatef(xRot / 16.0, 1.0, 0.0, 0.0);
+    glRotatef(yRot / 16.0, 0.0, 1.0, 0.0);
+    glRotatef(zRot / 16.0, 0.0, 0.0, 1.0);
 
     logo->draw();
 //! [7]
@@ -252,7 +252,11 @@ void GLWidget::setupViewport(int width, int height)
 
     glMatrixMode(GL_PROJECTION);
     glLoadIdentity();
+#ifdef QT_OPENGL_ES
+    glOrthof(-0.5, +0.5, -0.5, 0.5, 4.0, 15.0);
+#else
     glOrtho(-0.5, +0.5, -0.5, 0.5, 4.0, 15.0);
+#endif
     glMatrixMode(GL_MODELVIEW);
 }
 //! [14]
diff --git a/examples/opengl/shared/qtlogo.cpp b/examples/opengl/shared/qtlogo.cpp
index 3294da1..b32b416 100644
--- a/examples/opengl/shared/qtlogo.cpp
+++ b/examples/opengl/shared/qtlogo.cpp
@@ -172,14 +172,17 @@ static inline void qMultMatrix(const QMatrix4x4 &mat)
 {
     if (sizeof(qreal) == sizeof(GLfloat))
         glMultMatrixf((GLfloat*)mat.constData());
+#ifndef QT_OPENGL_ES
     else if (sizeof(qreal) == sizeof(GLdouble))
         glMultMatrixd((GLdouble*)mat.constData());
+#endif
     else
     {
         GLfloat fmat[16];
         qreal const *r = mat.constData();
         for (int i = 0; i < 16; ++i)
             fmat[i] = r[i];
+        glMultMatrixf(fmat);
     }
 }
 
@@ -188,7 +191,7 @@ void Patch::draw() const
 {
     glPushMatrix();
     qMultMatrix(mat);
-    glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, faceColor);
+    glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, faceColor);
 
     const GLushort *indices = geom->faces.constData();
     glDrawElements(GL_TRIANGLES, count, GL_UNSIGNED_SHORT, indices + start);