[Freeglut-cvs] SF.net SVN: freeglut:[1866] trunk/freeglut/freeglut/progs/demos/shapes/ shapes.c

[<jt...@us...>]

Revision: 1866
          http://sourceforge.net/p/freeglut/code/1866
Author:   jtsiomb
Date:     2021-09-29 13:09:31 +0000 (Wed, 29 Sep 2021)
Log Message:
-----------
shapes demo: added flat shading option (fixed-function only)

Modified Paths:
--------------
    trunk/freeglut/freeglut/progs/demos/shapes/shapes.c

Modified: trunk/freeglut/freeglut/progs/demos/shapes/shapes.c
===================================================================
--- trunk/freeglut/freeglut/progs/demos/shapes/shapes.c	2020-02-26 16:29:18 UTC (rev 1865)
+++ trunk/freeglut/freeglut/progs/demos/shapes/shapes.c	2021-09-29 13:09:31 UTC (rev 1866)
@@ -425,6 +425,7 @@
 static GLboolean animateXRot = GL_FALSE;
 static GLboolean useShader   = GL_FALSE;
 static GLboolean visNormals  = GL_FALSE;
+static GLboolean flat;
 
 /*
  * Enum to tell drawSizeInfo what to draw for each object
@@ -653,10 +654,15 @@
         shapesPrintf (row++, 1, "Perspective projection (p)");
     else
         shapesPrintf (row++, 1, "Orthographic projection (p)");
-    if (useShader)
+    if (useShader) {
         shapesPrintf (row++, 1, "Using shader (s)");
-    else
+    } else {
         shapesPrintf (row++, 1, "Using fixed function pipeline (s)");
+        if (flat)
+            shapesPrintf (row++, 1, "Flat shading (f)");
+        else
+            shapesPrintf (row++, 1, "Smooth shading (f)");
+    }
     if (animateXRot)
         shapesPrintf (row++, 1, "2D rotation (r)");
     else
@@ -683,6 +689,8 @@
 
     glutSetOption(GLUT_GEOMETRY_VISUALIZE_NORMALS,visNormals);  /* Normals visualized or not? */
 
+    glShadeModel(flat ? GL_FLAT : GL_SMOOTH);  /* flat or gouraud shading */
+
     if (useShader && !shaderReady)
         initShader();
 
@@ -820,6 +828,11 @@
                 function_index = 0;
         break;
 
+    case 'F':
+    case 'f':
+        flat ^= 1;
+        break;
+
     case 'N':
     case 'n': visNormals=!visNormals;     break;
 

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