- Document what works with GLES1 and GLES2 as of now

- Conditionaly disable what doesn't work
  so that libfreeglut can be compiled as-is for GLES1 and GLES2
  (Android and Mesa EGL)
- These #ifdef's are meant to disappear as more functions are implemented for GLES



git-svn-id: https://svn.code.sf.net/p/freeglut/code/trunk@1201 7f0cb862-5218-0410-a997-914c9d46530a

freeglut/freeglut/CMakeLists.txt

@@ -62,13 +62,13 @@ SET(FREEGLUT_SRCS
 IF(NOT FREEGLUT_GLES2 AND NOT FREEGLUT_GLES1)
     LIST(APPEND FREEGLUT_SRCS
         src/fg_font.c
-        src/fg_geometry.c
         src/fg_menu.c
         src/fg_teapot.c
         src/fg_teapot_data.h
     )
 ELSE()
     LIST(APPEND FREEGLUT_SRCS
+        src/fg_geometry.c
         src/gles_stubs.c
     )
 ENDIF()

freeglut/freeglut/include/GL/freeglut_ext.h

@@ -161,6 +161,7 @@ FGAPI void    FGAPIENTRY glutStrokeString( void* font, const unsigned char *stri
 /*
  * Geometry functions, see freeglut_geometry.c
  */
+#ifndef GL_ES_VERSION_2_0
 FGAPI void    FGAPIENTRY glutWireRhombicDodecahedron( void );
 FGAPI void    FGAPIENTRY glutSolidRhombicDodecahedron( void );
 
@@ -168,6 +169,7 @@ FGAPI void    FGAPIENTRY glutWireSierpinskiSponge ( int num_levels, double offse
 FGAPI void    FGAPIENTRY glutSolidSierpinskiSponge ( int num_levels, double offset[3], double scale );
 FGAPI void    FGAPIENTRY glutWireCylinder( double radius, double height, GLint slices, GLint stacks);
 FGAPI void    FGAPIENTRY glutSolidCylinder( double radius, double height, GLint slices, GLint stacks);
+#endif
 
 /*
  * Extension functions, see freeglut_ext.c

freeglut/freeglut/include/GL/freeglut_std.h

@@ -525,13 +525,18 @@ FGAPI int     FGAPIENTRY glutStrokeLength( void* font, const unsigned char* stri
  * Geometry functions, see freeglut_geometry.c
  */
 
+#ifndef GL_ES_VERSION_2_0
 FGAPI void    FGAPIENTRY glutWireCube( double size );
 FGAPI void    FGAPIENTRY glutSolidCube( double size );
+#endif
+#ifndef EGL_VERSION_1_0
 FGAPI void    FGAPIENTRY glutWireSphere( double radius, GLint slices, GLint stacks );
 FGAPI void    FGAPIENTRY glutSolidSphere( double radius, GLint slices, GLint stacks );
 FGAPI void    FGAPIENTRY glutWireCone( double base, double height, GLint slices, GLint stacks );
 FGAPI void    FGAPIENTRY glutSolidCone( double base, double height, GLint slices, GLint stacks );
+#endif
 
+#ifndef GL_ES_VERSION_2_0
 FGAPI void    FGAPIENTRY glutWireTorus( double innerRadius, double outerRadius, GLint sides, GLint rings );
 FGAPI void    FGAPIENTRY glutSolidTorus( double innerRadius, double outerRadius, GLint sides, GLint rings );
 FGAPI void    FGAPIENTRY glutWireDodecahedron( void );
@@ -542,12 +547,16 @@ FGAPI void    FGAPIENTRY glutWireTetrahedron( void );
 FGAPI void    FGAPIENTRY glutSolidTetrahedron( void );
 FGAPI void    FGAPIENTRY glutWireIcosahedron( void );
 FGAPI void    FGAPIENTRY glutSolidIcosahedron( void );
+#endif
 
 /*
  * Teapot rendering functions, found in freeglut_teapot.c
  */
+/* TODO: doesn't work with GLES1 yet */
+#ifndef EGL_VERSION_1_0
 FGAPI void    FGAPIENTRY glutWireTeapot( double size );
 FGAPI void    FGAPIENTRY glutSolidTeapot( double size );
+#endif
 
 /*
  * Game mode functions, see freeglut_gamemode.c

freeglut/freeglut/src/fg_ext.c

@@ -126,24 +126,34 @@ static GLUTproc fghGetGLUTProcAddress( const char* procName )
     CHECK_NAME(glutStrokeWidth);
     CHECK_NAME(glutBitmapLength);
     CHECK_NAME(glutStrokeLength);
+#ifndef EGL_VERSION_1_0
     CHECK_NAME(glutWireSphere);
     CHECK_NAME(glutSolidSphere);
     CHECK_NAME(glutWireCone);
     CHECK_NAME(glutSolidCone);
-    CHECK_NAME(glutWireCube);
-    CHECK_NAME(glutSolidCube);
     CHECK_NAME(glutWireTorus);
     CHECK_NAME(glutSolidTorus);
-    CHECK_NAME(glutWireDodecahedron);
+    CHECK_NAME(glutWireCylinder);
-    CHECK_NAME(glutSolidDodecahedron);
+    CHECK_NAME(glutSolidCylinder);
     CHECK_NAME(glutWireTeapot);
     CHECK_NAME(glutSolidTeapot);
+#endif
+#ifndef GL_ES_VERSION_2_0
+    CHECK_NAME(glutWireCube);
+    CHECK_NAME(glutSolidCube);
+    CHECK_NAME(glutWireDodecahedron);
+    CHECK_NAME(glutSolidDodecahedron);
     CHECK_NAME(glutWireOctahedron);
     CHECK_NAME(glutSolidOctahedron);
     CHECK_NAME(glutWireTetrahedron);
     CHECK_NAME(glutSolidTetrahedron);
     CHECK_NAME(glutWireIcosahedron);
     CHECK_NAME(glutSolidIcosahedron);
+    CHECK_NAME(glutWireRhombicDodecahedron);
+    CHECK_NAME(glutSolidRhombicDodecahedron);
+    CHECK_NAME(glutWireSierpinskiSponge);
+    CHECK_NAME(glutSolidSierpinskiSponge);
+#endif
     CHECK_NAME(glutVideoResizeGet);
     CHECK_NAME(glutSetupVideoResizing);
     CHECK_NAME(glutStopVideoResizing);
@@ -171,12 +181,6 @@ static GLUTproc fghGetGLUTProcAddress( const char* procName )
     CHECK_NAME(glutStrokeHeight);
     CHECK_NAME(glutBitmapString);
     CHECK_NAME(glutStrokeString);
-    CHECK_NAME(glutWireRhombicDodecahedron);
-    CHECK_NAME(glutSolidRhombicDodecahedron);
-    CHECK_NAME(glutWireSierpinskiSponge);
-    CHECK_NAME(glutSolidSierpinskiSponge);
-    CHECK_NAME(glutWireCylinder);
-    CHECK_NAME(glutSolidCylinder);
     CHECK_NAME(glutGetProcAddress);
     CHECK_NAME(glutMouseWheelFunc);
     CHECK_NAME(glutJoystickGetNumAxes);

freeglut/freeglut/src/fg_geometry.c

@@ -33,6 +33,7 @@
  */
 
 
+#ifndef GL_ES_VERSION_2_0
 /* General functions for drawing geometry
  * Solids are drawn by glDrawArrays if composed of triangles, or by
  * glDrawElements if consisting of squares or pentagons that were
@@ -725,11 +726,13 @@ static void fghSierpinskiSponge ( int numLevels, double offset[3], GLfloat scale
         free(normals );
     }
 }
+#endif /* GL_ES_VERSION_2_0 */
 
 
 /* -- INTERFACE FUNCTIONS ---------------------------------------------- */
 
 
+#ifndef EGL_VERSION_1_0
 /*
  * Draws a solid sphere
  */
@@ -1324,6 +1327,7 @@ void FGAPIENTRY glutSolidTorus( double dInnerRadius, double dOuterRadius, GLint
   free ( normal ) ;
   glPopMatrix();
 }
+#endif /* EGL_VERSION_1_0 */
 
 
 

freeglut/freeglut/src/gles_stubs.c

@@ -1,3 +1,5 @@
+/* TODO: implement me! */
+
 #include <GL/freeglut.h>
 #include "fg_internal.h"
 
@@ -14,3 +16,33 @@ GLboolean fgCheckActiveMenu ( SFG_Window *window, int button, GLboolean pressed,
                               int mouse_x, int mouse_y )  {
   fprintf(stderr, "fgCheckActiveMenu: STUB\n");
 }
+
+int  glutCreateMenu( void (* callback)( int menu ) ) {}
+void glutDestroyMenu( int menu ) {}
+int  glutGetMenu( void ) {}
+void glutSetMenu( int menu ) {}
+void glutAddMenuEntry( const char* label, int value ) {}
+void glutAddSubMenu( const char* label, int subMenu ) {}
+void glutChangeToMenuEntry( int item, const char* label, int value ) {}
+void glutChangeToSubMenu( int item, const char* label, int value ) {}
+void glutRemoveMenuItem( int item ) {}
+void glutAttachMenu( int button ) {}
+void glutDetachMenu( int button ) {}
+
+void glutBitmapCharacter( void* font, int character ) {}
+int  glutBitmapWidth( void* font, int character ) {}
+void glutStrokeCharacter( void* font, int character ) {}
+int  glutStrokeWidth( void* font, int character ) {}
+int  glutBitmapLength( void* font, const unsigned char* string ) {}
+int  glutStrokeLength( void* font, const unsigned char* string ) {}
+
+void *glutGetMenuData( void ) {}
+void  glutSetMenuData(void* data) {}
+
+int     glutBitmapHeight( void* font ) {}
+GLfloat glutStrokeHeight( void* font ) {}
+void    glutBitmapString( void* font, const unsigned char *string ) {}
+void    glutStrokeString( void* font, const unsigned char *string ) {}
+
+void glutWireTeapot( double size ){}
+void glutSolidTeapot( double size ){}