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vbox6: basic 3D support

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Implement GLX and X functionality through Mesa's EGL interface. This
requires multiple OpenGL contexts and in turn GEM context support in
libdrm/iris, as implemented in libdrm and intel_gpu_drv.

Update recipes and machine.vbox6 files accordingly,

issue #4380
This commit is contained in:
Sebastian Sumpf 2021-10-12 17:45:34 +02:00 committed by Norman Feske
parent 27883c976c
commit b98e07ed34
14 changed files with 319 additions and 69 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

28
repos/ports/lib/mk/spec/x86_64/virtualbox6-devices.mk
View File

@ -1,6 +1,6 @@
include $(REP_DIR)/lib/mk/virtualbox6-common.inc
LIBS += stdcxx mesa
LIBS += stdcxx mesa egl virtualbox6-shaderlib
SRC_CC += Devices/Audio/AudioHlp.cpp
SRC_CC += Devices/Audio/AudioMixBuffer.cpp
@ -34,15 +34,6 @@ SRC_CC += Devices/Graphics/DevVGA_VBVA.cpp
SRC_CC += Devices/Graphics/DevVGA_VDMA.cpp
SRC_CC += Devices/Graphics/HGSMI/HGSMIHost.cpp
SRC_CC += Devices/Graphics/HGSMI/SHGSMIHost.cpp
SRC_C += Devices/Graphics/shaderlib/directx.c
SRC_C += Devices/Graphics/shaderlib/glsl_shader.c
SRC_C += Devices/Graphics/shaderlib/libWineStub/debug.c
SRC_C += Devices/Graphics/shaderlib/shader.c
SRC_C += Devices/Graphics/shaderlib/shader_sm1.c
SRC_C += Devices/Graphics/shaderlib/shader_sm4.c
SRC_C += Devices/Graphics/shaderlib/shaderapi.c
SRC_C += Devices/Graphics/shaderlib/stateblock.c
SRC_C += Devices/Graphics/shaderlib/utils.c
SRC_CC += Devices/Input/DevPS2.cpp
SRC_CC += Devices/Input/DevPS2K.cpp
SRC_CC += Devices/Input/DevPS2M.cpp
@ -129,23 +120,6 @@ INC_DIR += $(VIRTUALBOX_DIR)/include/VBox/Graphics
# found in src/VBox/Devices/Makefile.kmk
CC_OPT += -DVBOX_HGCM_HOST_CODE
# SVGA3D/wine specific config
WINE_CC_OPT := -D__WINESRC__ -DWINE_NOWINSOCK -D_USE_MATH_DEFINES \
-DVBOX_USING_WINDDK_W7_OR_LATER \
-DVBOX_WINE_WITH_SINGLE_SWAPCHAIN_CONTEXT \
-DVBOX_WINE_WITH_IPRT \
-UVBOX_WITH_WDDM
CC_OPT_Devices/Graphics/shaderlib/directx = $(WINE_CC_OPT)
CC_OPT_Devices/Graphics/shaderlib/glsl_shader = $(WINE_CC_OPT)
CC_OPT_Devices/Graphics/shaderlib/libWineStub/debug = $(WINE_CC_OPT)
CC_OPT_Devices/Graphics/shaderlib/shader = $(WINE_CC_OPT)
CC_OPT_Devices/Graphics/shaderlib/shader_sm1 = $(WINE_CC_OPT)
CC_OPT_Devices/Graphics/shaderlib/shader_sm4 = $(WINE_CC_OPT)
CC_OPT_Devices/Graphics/shaderlib/shaderapi = $(WINE_CC_OPT)
CC_OPT_Devices/Graphics/shaderlib/stateblock = $(WINE_CC_OPT)
CC_OPT_Devices/Graphics/shaderlib/utils = $(WINE_CC_OPT)
Devices/Graphics/DevVGA.o: vbetables.h
vbetables.h: vbetables-gen

34
repos/ports/lib/mk/spec/x86_64/virtualbox6-shaderlib.mk Normal file
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@ -0,0 +1,34 @@
include $(REP_DIR)/lib/mk/virtualbox6-common.inc
SHARED_LIB = yes
LIBS = stdcxx mesa
SRC_C += Devices/Graphics/shaderlib/directx.c
SRC_C += Devices/Graphics/shaderlib/glsl_shader.c
SRC_C += Devices/Graphics/shaderlib/libWineStub/debug.c
SRC_C += Devices/Graphics/shaderlib/shader.c
SRC_C += Devices/Graphics/shaderlib/shader_sm1.c
SRC_C += Devices/Graphics/shaderlib/shader_sm4.c
SRC_C += Devices/Graphics/shaderlib/shaderapi.c
SRC_C += Devices/Graphics/shaderlib/stateblock.c
SRC_C += Devices/Graphics/shaderlib/utils.c
INC_DIR += $(VBOX_DIR)/Devices/Graphics/shaderlib/wine/include
INC_DIR += $(VIRTUALBOX_DIR)/include/VBox/Graphics
# SVGA3D/wine specific config
WINE_CC_OPT := -D__WINESRC__ -DWINE_NOWINSOCK -D_USE_MATH_DEFINES \
-DVBOX_USING_WINDDK_W7_OR_LATER \
-DVBOX_WINE_WITH_SINGLE_SWAPCHAIN_CONTEXT \
-DVBOX_WINE_WITH_IPRT \
-UVBOX_WITH_WDDM
CC_OPT_Devices/Graphics/shaderlib/directx = $(WINE_CC_OPT)
CC_OPT_Devices/Graphics/shaderlib/glsl_shader = $(WINE_CC_OPT)
CC_OPT_Devices/Graphics/shaderlib/libWineStub/debug = $(WINE_CC_OPT)
CC_OPT_Devices/Graphics/shaderlib/shader = $(WINE_CC_OPT)
CC_OPT_Devices/Graphics/shaderlib/shader_sm1 = $(WINE_CC_OPT)
CC_OPT_Devices/Graphics/shaderlib/shader_sm4 = $(WINE_CC_OPT)
CC_OPT_Devices/Graphics/shaderlib/shaderapi = $(WINE_CC_OPT)
CC_OPT_Devices/Graphics/shaderlib/stateblock = $(WINE_CC_OPT)
CC_OPT_Devices/Graphics/shaderlib/utils = $(WINE_CC_OPT)

2
repos/ports/ports/virtualbox6.hash
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@ -1 +1 @@
7991a9853bb0a96cad9a54ebaf3290dfda9ae2d2
ee399455b46b3f366f0423567e06608b0bf1a853

4
repos/ports/recipes/pkg/vbox6/archives
View File

@ -1,13 +1,17 @@
_/raw/vbox6
_/src/expat
_/src/init
_/src/jpeg
_/src/libc
_/src/libdrm
_/src/libiconv
_/src/libyuv
_/src/mesa
_/src/posix
_/src/stdcxx
_/src/vbox6
_/src/vfs
_/src/vfs_gpu
_/src/vfs_oss
_/src/vfs_pipe
_/src/zlib

19
repos/ports/recipes/pkg/vbox6/runtime
View File

@ -1,10 +1,11 @@
<runtime ram="4300M" caps="2500" binary="init">
<runtime ram="4300M" caps="8000" binary="init">
<requires>
<file_system label="vm"/>
<file_system label="shared"/>
<vm/>
<timer/>
<gpu/>
<gui/>
<nic/>
<rom label="capslock"/>
@ -12,6 +13,7 @@
<report label="shape"/>
<report label="clipboard"/>
<rom label="clipboard"/>
<rom label="mesa_gpu_drv.lib.so"/>
<rm/>
<rtc/>
<rom label="usb_devices"/>
@ -30,6 +32,7 @@
<service name="LOG"/>
<service name="VM"/>
<service name="Gui"/>
<service name="Gpu"/>
<service name="Timer"/>
<service name="Rtc"/>
<service name="Report"/>
@ -44,14 +47,14 @@
<default caps="100"/>
<start name="vbox" caps="2000">
<start name="vbox" caps="7000">
<binary name="virtualbox6" />
<resource name="RAM" quantum="8G"/>
<exit propagate="yes"/>
<config vbox_file="machine.vbox6" xhci="yes" vm_name="linux" capslock="rom" ld_verbose="yes">
<vfs>
<dir name="dev">
<log/> <rtc/> <null/> <zero/> <oss name="dsp"/>
<log/> <rtc/> <null/> <gpu/> <zero/> <oss name="dsp"/>
</dir>
<dir name="pipe"> <pipe/> </dir>
<dir name="shared"> <fs label="shared" writeable="yes"/> </dir>
@ -82,6 +85,8 @@
<parent label="virtualbox6-sharedclipboard.lib.so"/> </service>
<service name="ROM" label="VBoxSharedFolders.so">
<parent label="virtualbox6-sharedfolders.lib.so"/> </service>
<service name="ROM" label="mesa_gpu_drv.lib.so">
<parent label="mesa_gpu_drv.lib.so"/> </service>
<service name="Nic"> <parent/> </service>
<service name="Report" label="shape"> <parent label="shape"/> </service>
<service name="ROM" label="clipboard"> <parent label="clipboard"/> </service>
@ -93,21 +98,29 @@
</config>
<content>
<rom label="egl.lib.so"/>
<rom label="expat.lib.so"/>
<rom label="glapi.lib.so"/>
<rom label="ld.lib.so"/>
<rom label="init"/>
<rom label="virtualbox6"/>
<rom label="jpeg.lib.so"/>
<rom label="libc.lib.so"/>
<rom label="libdrm.lib.so"/>
<rom label="libiconv.lib.so"/>
<rom label="libm.lib.so"/>
<rom label="libyuv.lib.so"/>
<rom label="mesa.lib.so"/>
<rom label="qemu-usb.lib.so"/>
<rom label="stdcxx.lib.so"/>
<rom label="vfs.lib.so"/>
<rom label="vfs_gpu.lib.so"/>
<rom label="vfs_oss.lib.so"/>
<rom label="vfs_pipe.lib.so"/>
<rom label="virtualbox6-shaderlib.lib.so"/>
<rom label="virtualbox6-sharedclipboard.lib.so"/>
<rom label="virtualbox6-sharedfolders.lib.so"/>
<rom label="zlib.lib.so"/>
</content>
</runtime>

7
repos/ports/recipes/raw/vbox6/machine.vbox6
View File

@ -17,7 +17,14 @@
</CPU>
<Memory RAMSize="4096"/>
<HID Pointing="PS2Mouse"/>
<!-- normal operation -->
<Display VRAMSize="20" monitorCount="1" controller="VBoxSVGA"/>
<!-- 3D Linux
<Display controller="VMSVGA" VRAMSize="256" accelerate3D="true"/>
-->
<!-- 3D Windows
<Display VRAMSize="128" monitorCount="1" controller="VBoxSVGA" accelerate3D="true"/>
-->
<RemoteDisplay enabled="false"/>
<Paravirt provider="KVM"/>
<BIOS>

1
repos/ports/recipes/src/vbox6/used_apis
View File

@ -6,6 +6,7 @@ gui_session
input_session
libc
libiconv
mesa
nic_session
nitpicker_gfx
os

208
repos/ports/src/virtualbox6/glx_x11.cc
View File

@ -1,6 +1,7 @@
/*
* \brief GLX/X11 emulation for SVGA3D
* \author Christian Helmuth
* \author Sebastian Sumpf
* \date 2021-10-01
*/
@ -27,7 +28,7 @@
/* local includes */
#include <stub_macros.h>
static bool const debug = true;
static bool const debug = false;
using namespace Genode;
@ -40,42 +41,187 @@ extern "C" int ExplicitlyLoadVBoxSVGA3D(bool fResolveAllImports, PRTERRINFO pErr
* GLX
*/
//static void impl_glXGetProcAddress(GLubyte const *procname)
//{
//}
void (*glXGetProcAddress(const GLubyte *procname))(void)
{
log(__func__, ": procname='", (char const *)procname, "'");
return (void(*)())nullptr;
}
extern "C" GLXFBConfig * glXChooseFBConfig(Display *dpy, int screen, const int *attribList, int *nitems) STOP
extern "C" XVisualInfo * glXChooseVisual(Display *dpy, int screen, int *attribList) STOP
extern "C" GLXContext glXCreateContext(Display *dpy, XVisualInfo *vis, GLXContext shareList, Bool direct) STOP
extern "C" void glXDestroyContext(Display *dpy, GLXContext ctx) STOP
extern "C" int glXGetFBConfigAttrib(Display *dpy, GLXFBConfig config, int attribute, int *value) STOP
extern "C" XVisualInfo * glXGetVisualFromFBConfig(Display *dpy, GLXFBConfig config) STOP
extern "C" Bool glXMakeCurrent(Display *dpy, GLXDrawable drawable, GLXContext ctx) STOP
extern "C" Bool glXQueryVersion(Display *dpy, int *maj, int *min) STOP
typedef void (*__GLXextFuncPtr)(void);
__GLXextFuncPtr glXGetProcAddress(GLubyte const *procname)
{
return (__GLXextFuncPtr)eglGetProcAddress((char const *)procname);
}
extern "C"
Bool glXQueryVersion(Display *display, int *major, int *minor)
{
EGLBoolean initialized = eglInitialize(display->dpy, major, minor);
if (initialized)
Genode::log("EGL_VERSION = ", eglQueryString(display->dpy, EGL_VERSION));
return initialized;
}
extern "C"
XVisualInfo * glXChooseVisual(Display *display, int screen, int *attribList)
{
EGLConfig config;
EGLint config_attribs[32];
EGLint num_configs, i;
i = 0;
config_attribs[i++] = EGL_RED_SIZE;
config_attribs[i++] = 1;
config_attribs[i++] = EGL_GREEN_SIZE;
config_attribs[i++] = 1;
config_attribs[i++] = EGL_BLUE_SIZE;
config_attribs[i++] = 1;
config_attribs[i++] = EGL_DEPTH_SIZE;
config_attribs[i++] = 1;
config_attribs[i++] = EGL_SURFACE_TYPE;
config_attribs[i++] = EGL_WINDOW_BIT;
config_attribs[i++] = EGL_RENDERABLE_TYPE;
config_attribs[i++] = EGL_OPENGL_BIT;
config_attribs[i] = EGL_NONE;
if (!eglChooseConfig(display->dpy, config_attribs, &config, 1, &num_configs)
|| !num_configs) {
Genode::error("failed to choose a config");
return nullptr;
}
static XVisualInfo info { };
static Visual visual { };
visual.config = config;
info.visual = &visual;
return &info;
}
extern "C"
GLXContext glXCreateContext(Display *display, XVisualInfo *vis,
GLXContext shareList, Bool direct)
{
eglBindAPI(EGL_OPENGL_API);
EGLint context_attribs[1] { EGL_NONE };
GLXContext ctx = new _GLXContext();
ctx->context = eglCreateContext(display->dpy, vis->visual->config,
shareList ? shareList->context : EGL_NO_CONTEXT,
context_attribs);
if (!ctx->context) {
Genode::error("failed to create context");
return nullptr;
}
return ctx;
}
extern "C"
Bool glXMakeCurrent(Display *display, GLXDrawable drawable, GLXContext ctx)
{
if (!eglMakeCurrent(display->dpy,
drawable ? drawable->surface : EGL_NO_SURFACE,
drawable ? drawable->surface : EGL_NO_SURFACE,
ctx ? ctx->context : EGL_NO_CONTEXT)) {
Genode::error("failed to make current drawable");
return False;
}
//Genode::warning("glXMakeCurrent: succeeded");
return True;
}
extern "C"
void glXDestroyContext(Display *display, GLXContext ctx)
{
eglDestroyContext(display->dpy, ctx->context);
}
/*
* Xlib
*/
extern "C" Window XDefaultRootWindow(Display *) TRACE(Window());
extern "C" Colormap XCreateColormap(Display *, Window, Visual *, int) TRACE(Colormap(1));
extern "C" XErrorHandler XSetErrorHandler(XErrorHandler) TRACE(XErrorHandler(nullptr));
extern "C" int XCloseDisplay(Display *) STOP
extern "C" Colormap XCreateColormap(Display *, Window, Visual *, int) STOP
extern "C" Window XCreateWindow( Display *, Window, int, int, unsigned int, unsigned int, unsigned int, int, unsigned int, Visual *, unsigned long, XSetWindowAttributes *) STOP
extern "C" Window XDefaultRootWindow(Display *) STOP
extern "C" int XDestroyWindow(Display *, Window) STOP
extern "C" XErrorHandler XSetErrorHandler(XErrorHandler) STOP
extern "C" int XFree(void *) STOP
extern "C" Status XGetWindowAttributes(Display *, Window, XWindowAttributes *) STOP
extern "C" int XMapWindow(Display *, Window) STOP
extern "C" int XNextEvent(Display *, XEvent *) STOP
extern "C" Display * XOpenDisplay(char *name) STOP
extern "C" int XPending(Display *) STOP
extern "C" int XScreenNumberOfScreen(Screen *) STOP
extern "C" int XSync(Display *, Bool) STOP
extern "C" int XFree(void *) STOP
extern "C" Status XGetWindowAttributes(Display *, Window, XWindowAttributes *) STOP
extern "C" int XMapWindow(Display *, Window) STOP
extern "C" int XNextEvent(Display *, XEvent *) STOP
extern "C" int XScreenNumberOfScreen(Screen *) STOP
extern "C" int XSync(Display *, Bool) STOP
extern "C"
Display * XOpenDisplay(char *)
{
Display *display = new Display();
display->dpy = eglGetDisplay(EGLNativeDisplayType());
return display;
}
extern "C"
int XCloseDisplay(Display *display)
{
delete display;
return 0;
}
extern "C"
int XPending(Display *)
{
static bool once = true;
if (once) {
Genode::error(__func__, " called by 'vmsvga3dXEventThread' implement!");
once = false;
}
return 0;
}
extern "C"
Window XCreateWindow(Display *display, Window,
int, int,
unsigned width, unsigned height,
unsigned int, int, unsigned int,
Visual *visual, unsigned long, XSetWindowAttributes *)
{
Genode_egl_window *egl_window = new Genode_egl_window();
egl_window->width = width;
egl_window->height = height;
egl_window->type = Surface_type::WINDOW;
egl_window->addr = (unsigned char*)0xcafebabe;
Window window = new _Window();
window->window = egl_window;
window->surface = eglCreateWindowSurface(display->dpy, visual->config, egl_window, NULL);
if (window->surface == EGL_NO_SURFACE) {
Genode::error("could not create surface");
return nullptr;
}
return window;
}
extern "C" int XDestroyWindow(Display *display, Window window)
{
eglDestroySurface(display->dpy, window->surface);
delete window->window;
delete window;
return 0;
}

9
repos/ports/src/virtualbox6/include/GL/glx.h
View File

@ -4,7 +4,7 @@
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <GL/gl.h>
#include <EGL/egl.h>
#ifdef __cplusplus
extern "C" {
@ -23,10 +23,13 @@ extern "C" {
#define GLX_WINDOW_BIT 0x00000001
#define GLX_DRAWABLE_TYPE 0x8010
typedef struct _GLXContext { void *dummy; } * GLXContext;
typedef struct _GLXContext
{
EGLContext context;
} * GLXContext;
typedef struct _GLXFBConfig { void *dummy; } * GLXFBConfig;
typedef XID GLXDrawable;
typedef Window GLXDrawable;
extern void (*glXGetProcAddress(const GLubyte *procname))(void);

6
repos/ports/src/virtualbox6/include/X11/X.h
View File

@ -1,6 +1,8 @@
#ifndef _X11__X_H_
#define _X11__X_H_
#include <EGL/egl.h>
#ifdef __cplusplus
extern "C" {
#endif
@ -8,9 +10,11 @@ extern "C" {
/* originally in X11/Xmd.h */
typedef unsigned int CARD32;
struct _Window;
typedef CARD32 XID;
typedef CARD32 VisualID;
typedef XID Window;
typedef struct _Window* Window;
typedef XID Colormap;
#define None 0L

15
repos/ports/src/virtualbox6/include/X11/Xlib.h
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@ -2,7 +2,7 @@
#define _X11__XLIB_H_
#include <X11/X.h>
#include <EGL/egl.h>
#ifdef __cplusplus
extern "C" {
#endif
@ -12,9 +12,18 @@ extern "C" {
#define True 1
#define False 0
typedef struct { void *dummy; } Display;
typedef struct { EGLDisplay dpy; } Display;
typedef struct { void *dummy; } Screen;
typedef struct { void *dummy; } Visual;
typedef struct
{
EGLConfig config;
} Visual;
struct _Window
{
EGLSurface surface;
EGLNativeWindowType window;
};
typedef struct { unsigned char error_code; } XErrorEvent;

2
repos/ports/src/virtualbox6/patches/series
View File

@ -9,3 +9,5 @@ tm_poke.patch
exec_state.patch
rttimer.patch
devsvga.patch
shaderlib.patch
svga.patch

43
repos/ports/src/virtualbox6/patches/shaderlib.patch Normal file
View File

@ -0,0 +1,43 @@
diff --git a/src/virtualbox6/src/VBox/Devices/Graphics/shaderlib/shader.c b/src/virtualbox6/src/VBox/Devices/Graphics/shaderlib/shader.c
index 19da2bc..1510e67 100644
--- a/src/virtualbox6/src/VBox/Devices/Graphics/shaderlib/shader.c
+++ b/src/virtualbox6/src/VBox/Devices/Graphics/shaderlib/shader.c
@@ -745,7 +745,8 @@ static HRESULT shader_get_registers_used(IWineD3DBaseShader *iface, const struct
/* Fake sampler usage, only set reserved bit and type. */
sampler_idx = dst_param.reg.idx;
- AssertReturn(sampler_idx < RT_ELEMENTS(reg_maps->sampler_type), E_INVALIDARG);
+ /* triggers in native VirtualBox6 as well */
+ //AssertReturn(sampler_idx < RT_ELEMENTS(reg_maps->sampler_type), E_INVALIDARG);
TRACE("Setting fake 2D sampler for 1.x pixelshader.\n");
reg_maps->sampler_type[sampler_idx] = WINED3DSTT_2D;
diff --git a/src/virtualbox6/src/VBox/Devices/Graphics/shaderlib/wined3d_gl.h b/src/virtualbox6/src/VBox/Devices/Graphics/shaderlib/wined3d_gl.h
index 2fa9b12..99bd0d9 100644
--- a/src/virtualbox6/src/VBox/Devices/Graphics/shaderlib/wined3d_gl.h
+++ b/src/virtualbox6/src/VBox/Devices/Graphics/shaderlib/wined3d_gl.h
@@ -64,6 +64,11 @@
#define WINE_GLAPI
#endif
+#ifdef DECLSPEC_HIDDEN
+#undef DECLSPEC_HIDDEN
+#endif
+#define DECLSPEC_HIDDEN __attribute__((visibility("hidden")))
+
/****************************************************
* OpenGL 1.0/1.1/1.2/1.3
* types, #defines and function pointers
diff --git a/src/virtualbox6/src/VBox/Devices/Graphics/shaderlib/wined3d_private.h b/src/virtualbox6/src/VBox/Devices/Graphics/shaderlib/wined3d_private.h
index 3c7e750..bc23da2 100644
--- a/src/virtualbox6/src/VBox/Devices/Graphics/shaderlib/wined3d_private.h
+++ b/src/virtualbox6/src/VBox/Devices/Graphics/shaderlib/wined3d_private.h
@@ -1323,7 +1323,7 @@ struct wined3d_context *context_create(IWineD3DSwapChainImpl *swapchain, IWineD3
, struct VBOXUHGSMI *pHgsmi
#endif
) DECLSPEC_HIDDEN;
-struct IWineD3DDeviceImpl *context_get_device(const struct wined3d_context *context); DECLSPEC_HIDDEN;
+struct IWineD3DDeviceImpl *context_get_device(const struct wined3d_context *context) DECLSPEC_HIDDEN;
#ifdef VBOX_WITH_WDDM
struct wined3d_context *context_find_create(IWineD3DDeviceImpl *device, IWineD3DSwapChainImpl *swapchain, IWineD3DSurfaceImpl *target,
const struct wined3d_format_desc *ds_format_desc) DECLSPEC_HIDDEN;

10
repos/ports/src/virtualbox6/patches/svga.patch Normal file
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@ -0,0 +1,10 @@
--- virtualbox6-0cabc6a3f8e2884326dabeb1768916704dfdd115/src/virtualbox6/src/VBox/Devices/Graphics/DevVGA-SVGA3d-internal.h 2021-01-07 16:39:17.000000000 +0100
+++ virtualbox6-devel-gpu/src/virtualbox6/src/VBox/Devices/Graphics/DevVGA-SVGA3d-internal.h 2021-10-12 12:06:58.895163551 +0200
@@ -88,6 +88,7 @@
#include "vmsvga/svga3d_shaderdefs.h"
#ifdef VMSVGA3D_OPENGL
+#undef GL_GLEXT_VERSION
# include "vmsvga_glext/glext.h"
# include "shaderlib/shaderlib.h"
#endif