Don't load non-core GL functions for OpenGL 3.2 core context

Also declare the GL functions in tr_local.h so there is compile error
for non-core GL functions instead of SEGFAULT from dereferencing a NULL
pointer.

Disable the non-functional stencil shadow code that hasn't been updated
to use OpenGL 3.2 core compatible drawing.

code/renderergl2/tr_local.h

@@ -36,6 +36,18 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 #include "../renderercommon/iqm.h"
 #include "../renderercommon/qgl.h"
 
+#define GLE(ret, name, ...) extern name##proc * qgl##name;
+QGL_1_1_PROCS;
+QGL_DESKTOP_1_1_PROCS;
+QGL_1_3_PROCS;
+QGL_1_5_PROCS;
+QGL_2_0_PROCS;
+QGL_3_0_PROCS;
+QGL_ARB_framebuffer_object_PROCS;
+QGL_ARB_vertex_array_object_PROCS;
+QGL_EXT_direct_state_access_PROCS;
+#undef GLE
+
 #define GL_INDEX_TYPE		GL_UNSIGNED_INT
 typedef unsigned int glIndex_t;
 

code/renderergl2/tr_shadows.c

@@ -43,8 +43,8 @@ typedef struct {
 
 static	edgeDef_t	edgeDefs[SHADER_MAX_VERTEXES][MAX_EDGE_DEFS];
 static	int			numEdgeDefs[SHADER_MAX_VERTEXES];
-static	int			facing[SHADER_MAX_INDEXES/3];
-static	vec3_t		shadowXyz[SHADER_MAX_VERTEXES];
+//static	int			facing[SHADER_MAX_INDEXES/3];
+//static	vec3_t		shadowXyz[SHADER_MAX_VERTEXES];
 
 void R_AddEdgeDef( int i1, int i2, int facing ) {
 	int		c;
@@ -60,6 +60,8 @@ void R_AddEdgeDef( int i1, int i2, int facing ) {
 }
 
 void R_RenderShadowEdges( void ) {
+	// FIXME: implement this
+#if 0
 	int		i;
 
 #if 0
@@ -138,6 +140,7 @@ void R_RenderShadowEdges( void ) {
 		}
 	}
 #endif
+#endif
 }
 
 /*
@@ -153,6 +156,8 @@ triangleFromEdge[ v1 ][ v2 ]
 =================
 */
 void RB_ShadowTessEnd( void ) {
+	// FIXME: implement this
+#if 0
 	int		i;
 	int		numTris;
 	vec3_t	lightDir;
@@ -230,6 +235,7 @@ void RB_ShadowTessEnd( void ) {
 
 	// reenable writing to the color buffer
 	qglColorMask(rgba[0], rgba[1], rgba[2], rgba[3]);
+#endif
 }
 
 
@@ -244,6 +250,8 @@ overlap and double darken.
 =================
 */
 void RB_ShadowFinish( void ) {
+	// FIXME: implement this
+#if 0
 	if ( r_shadows->integer != 2 ) {
 		return;
 	}
@@ -275,6 +283,7 @@ void RB_ShadowFinish( void ) {
 
 	qglColor4f(1,1,1,1);
 	qglDisable( GL_STENCIL_TEST );
+#endif
 }