int gl_support_anisotropy = false;
// GL_NV_texture_shader
int gl_textureshader = false;
+// GL_EXT_stencil_two_side
+int gl_support_stenciltwoside = false;
// LordHavoc: if window is hidden, don't update screen
int vid_hidden = true;
void (GLAPIENTRY *qglPolygonOffset)(GLfloat factor, GLfloat units);
+void (GLAPIENTRY *qglActiveStencilFaceEXT)(GLenum);
+
int GL_CheckExtension(const char *name, const dllfunction_t *funcs, const char *disableparm, int silent)
{
int failed = false;
{NULL, NULL}
};
+static dllfunction_t stenciltwosidefuncs[] =
+{
+ {"glActiveStencilFaceEXT", (void **) &qglActiveStencilFaceEXT},
+ {NULL, NULL}
+};
+
void VID_CheckExtensions(void)
{
gl_support_clamptoedge = false;
gl_support_var = false;
gl_support_var2 = false;
+ gl_support_stenciltwoside = false;
if (!GL_CheckExtension("OpenGL 1.1.0", opengl110funcs, NULL, false))
Sys_Error("OpenGL 1.1.0 functions not found\n");
gl_textureshader = GL_CheckExtension("GL_NV_texture_shader", NULL, "-notextureshader", false);
+ gl_support_stenciltwoside = GL_CheckExtension("GL_EXT_stencil_two_side", stenciltwosidefuncs, "-nostenciltwoside", false);
+
// we don't care if it's an extension or not, they are identical functions, so keep it simple in the rendering code
if (qglDrawRangeElements == NULL)
qglDrawRangeElements = qglDrawRangeElementsEXT;