Add TFP and FBO helpers.

This commit is contained in:
gb 2010-03-30 12:59:15 +00:00
parent 4ff830812f
commit 502dec7c1c
2 changed files with 718 additions and 0 deletions

View file

@ -18,13 +18,38 @@
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#define _GNU_SOURCE 1 /* RTLD_DEFAULT */
#include "config.h"
#include <string.h>
#include <math.h>
#include <dlfcn.h>
#include "gstvaapiutils_glx.h"
#include "gstvaapiutils_x11.h"
#define DEBUG 1
#include "gstvaapidebug.h"
/** Lookup for substring NAME in string EXT using SEP as separators */
static gboolean
find_string(const char *name, const char *ext, const char *sep)
{
const char *end;
int name_len, n;
if (!name || !ext)
return FALSE;
end = ext + strlen(ext);
name_len = strlen(name);
while (ext < end) {
n = strcspn(ext, sep);
if (n == name_len && strncmp(name, ext, n) == 0)
return TRUE;
ext += (n + 1);
}
return FALSE;
}
/**
* gl_get_error_string:
* @error: an OpenGL error enumeration
@ -415,3 +440,594 @@ gl_create_texture(GLenum target, GLenum format, guint width, guint height)
gl_unbind_texture(&ts);
return texture;
}
/**
* get_proc_address:
* @name: the name of the OpenGL extension function to lookup
*
* Returns the specified OpenGL extension function
*
* Return value: the OpenGL extension matching @name, or %NULL if none
* was found
*/
typedef void (*GLFuncPtr)(void);
typedef GLFuncPtr (*GLXGetProcAddressProc)(const char *);
static GLFuncPtr
get_proc_address_default(const char *name)
{
return NULL;
}
static GLXGetProcAddressProc
get_proc_address_func(void)
{
GLXGetProcAddressProc get_proc_func;
dlerror();
get_proc_func = (GLXGetProcAddressProc)
dlsym(RTLD_DEFAULT, "glXGetProcAddress");
if (!dlerror())
return get_proc_func;
get_proc_func = (GLXGetProcAddressProc)
dlsym(RTLD_DEFAULT, "glXGetProcAddressARB");
if (!dlerror())
return get_proc_func;
return get_proc_address_default;
}
static inline GLFuncPtr
get_proc_address(const char *name)
{
static GLXGetProcAddressProc get_proc_func = NULL;
if (!get_proc_func)
get_proc_func = get_proc_address_func();
return get_proc_func(name);
}
/**
* gl_init_vtable:
*
* Initializes the global #GLVTable.
*
* Return value: the #GLVTable filled in with OpenGL extensions, or
* %NULL on error.
*/
static GLVTable gl_vtable_static;
static GLVTable *
gl_init_vtable(void)
{
GLVTable * const gl_vtable = &gl_vtable_static;
const gchar *gl_extensions = (const gchar *)glGetString(GL_EXTENSIONS);
gboolean has_extension;
/* GLX_EXT_texture_from_pixmap */
gl_vtable->glx_bind_tex_image = (PFNGLXBINDTEXIMAGEEXTPROC)
get_proc_address("glXBindTexImageEXT");
if (!gl_vtable->glx_bind_tex_image)
return NULL;
gl_vtable->glx_release_tex_image = (PFNGLXRELEASETEXIMAGEEXTPROC)
get_proc_address("glXReleaseTexImageEXT");
if (!gl_vtable->glx_release_tex_image)
return NULL;
/* GL_ARB_framebuffer_object */
has_extension = (
find_string("GL_ARB_framebuffer_object", gl_extensions, " ") ||
find_string("GL_EXT_framebuffer_object", gl_extensions, " ")
);
if (has_extension) {
gl_vtable->gl_gen_framebuffers = (PFNGLGENFRAMEBUFFERSEXTPROC)
get_proc_address("glGenFramebuffersEXT");
if (!gl_vtable->gl_gen_framebuffers)
return NULL;
gl_vtable->gl_delete_framebuffers = (PFNGLDELETEFRAMEBUFFERSEXTPROC)
get_proc_address("glDeleteFramebuffersEXT");
if (!gl_vtable->gl_delete_framebuffers)
return NULL;
gl_vtable->gl_bind_framebuffer = (PFNGLBINDFRAMEBUFFEREXTPROC)
get_proc_address("glBindFramebufferEXT");
if (!gl_vtable->gl_bind_framebuffer)
return NULL;
gl_vtable->gl_gen_renderbuffers = (PFNGLGENRENDERBUFFERSEXTPROC)
get_proc_address("glGenRenderbuffersEXT");
if (!gl_vtable->gl_gen_renderbuffers)
return NULL;
gl_vtable->gl_delete_renderbuffers = (PFNGLDELETERENDERBUFFERSEXTPROC)
get_proc_address("glDeleteRenderbuffersEXT");
if (!gl_vtable->gl_delete_renderbuffers)
return NULL;
gl_vtable->gl_bind_renderbuffer = (PFNGLBINDRENDERBUFFEREXTPROC)
get_proc_address("glBindRenderbufferEXT");
if (!gl_vtable->gl_bind_renderbuffer)
return NULL;
gl_vtable->gl_renderbuffer_storage = (PFNGLRENDERBUFFERSTORAGEEXTPROC)
get_proc_address("glRenderbufferStorageEXT");
if (!gl_vtable->gl_renderbuffer_storage)
return NULL;
gl_vtable->gl_framebuffer_renderbuffer = (PFNGLFRAMEBUFFERRENDERBUFFEREXTPROC)
get_proc_address("glFramebufferRenderbufferEXT");
if (!gl_vtable->gl_framebuffer_renderbuffer)
return NULL;
gl_vtable->gl_framebuffer_texture_2d = (PFNGLFRAMEBUFFERTEXTURE2DEXTPROC)
get_proc_address("glFramebufferTexture2DEXT");
if (!gl_vtable->gl_framebuffer_texture_2d)
return NULL;
gl_vtable->gl_check_framebuffer_status = (PFNGLCHECKFRAMEBUFFERSTATUSEXTPROC)
get_proc_address("glCheckFramebufferStatusEXT");
if (!gl_vtable->gl_check_framebuffer_status)
return NULL;
gl_vtable->has_framebuffer_object = TRUE;
}
/* GL_ARB_fragment_program */
has_extension = (
find_string("GL_ARB_fragment_program", gl_extensions, " ")
);
if (has_extension) {
gl_vtable->gl_gen_programs = (PFNGLGENPROGRAMSARBPROC)
get_proc_address("glGenProgramsARB");
if (!gl_vtable->gl_gen_programs)
return NULL;
gl_vtable->gl_delete_programs = (PFNGLDELETEPROGRAMSARBPROC)
get_proc_address("glDeleteProgramsARB");
if (!gl_vtable->gl_delete_programs)
return NULL;
gl_vtable->gl_bind_program = (PFNGLBINDPROGRAMARBPROC)
get_proc_address("glBindProgramARB");
if (!gl_vtable->gl_bind_program)
return NULL;
gl_vtable->gl_program_string = (PFNGLPROGRAMSTRINGARBPROC)
get_proc_address("glProgramStringARB");
if (!gl_vtable->gl_program_string)
return NULL;
gl_vtable->gl_get_program_iv = (PFNGLGETPROGRAMIVARBPROC)
get_proc_address("glGetProgramivARB");
if (!gl_vtable->gl_get_program_iv)
return NULL;
gl_vtable->gl_program_local_parameter_4fv = (PFNGLPROGRAMLOCALPARAMETER4FVARBPROC)
get_proc_address("glProgramLocalParameter4fvARB");
if (!gl_vtable->gl_program_local_parameter_4fv)
return NULL;
gl_vtable->has_fragment_program = TRUE;
}
/* GL_ARB_multitexture */
has_extension = (
find_string("GL_ARB_multitexture", gl_extensions, " ")
);
if (has_extension) {
gl_vtable->gl_active_texture = (PFNGLACTIVETEXTUREPROC)
get_proc_address("glActiveTextureARB");
if (!gl_vtable->gl_active_texture)
return NULL;
gl_vtable->gl_multi_tex_coord_2f = (PFNGLMULTITEXCOORD2FPROC)
get_proc_address("glMultiTexCoord2fARB");
if (!gl_vtable->gl_multi_tex_coord_2f)
return NULL;
gl_vtable->has_multitexture = TRUE;
}
return gl_vtable;
}
/**
* gl_get_vtable:
*
* Retrieves a VTable for OpenGL extensions.
*
* Return value: VTable for OpenGL extensions
*/
GLVTable *
gl_get_vtable(void)
{
static GStaticMutex mutex = G_STATIC_MUTEX_INIT;
static gboolean gl_vtable_init = TRUE;
static GLVTable *gl_vtable = NULL;
g_static_mutex_lock(&mutex);
if (gl_vtable_init) {
gl_vtable_init = FALSE;
gl_vtable = gl_init_vtable();
}
g_static_mutex_unlock(&mutex);
return gl_vtable;
}
/**
* gl_create_pixmap_object:
* @dpy: an X11 #Display
* @width: the request width, in pixels
* @height: the request height, in pixels
*
* Creates a #GLPixmapObject of the specified dimensions. This
* requires the GLX_EXT_texture_from_pixmap extension.
*
* Return value: the newly created #GLPixmapObject object
*/
GLPixmapObject *
gl_create_pixmap_object(Display *dpy, guint width, guint height)
{
GLVTable * const gl_vtable = gl_get_vtable();
GLPixmapObject *pixo;
GLXFBConfig *fbconfig;
int screen;
Window rootwin;
XWindowAttributes wattr;
int *attr;
int n_fbconfig_attrs;
int fbconfig_attrs[32] = {
GLX_DRAWABLE_TYPE, GLX_PIXMAP_BIT,
GLX_DOUBLEBUFFER, GL_TRUE,
GLX_RENDER_TYPE, GLX_RGBA_BIT,
GLX_X_RENDERABLE, GL_TRUE,
GLX_Y_INVERTED_EXT, GL_TRUE,
GLX_RED_SIZE, 8,
GLX_GREEN_SIZE, 8,
GLX_BLUE_SIZE, 8,
GL_NONE,
};
int pixmap_attrs[10] = {
GLX_TEXTURE_TARGET_EXT, GLX_TEXTURE_2D_EXT,
GLX_MIPMAP_TEXTURE_EXT, GL_FALSE,
GL_NONE,
};
if (!gl_vtable)
return NULL;
screen = DefaultScreen(dpy);
rootwin = RootWindow(dpy, screen);
/* XXX: this won't work for different displays */
if (!gl_vtable->has_texture_from_pixmap) {
const char *glx_extensions;
int glx_major, glx_minor;
glx_extensions = glXQueryExtensionsString(dpy, screen);
if (!glx_extensions)
return NULL;
if (!find_string("GLX_EXT_texture_from_pixmap", glx_extensions, " "))
return NULL;
if (!glXQueryVersion(dpy, &glx_major, &glx_minor))
return NULL;
if (glx_major < 0 || (glx_major == 1 && glx_minor < 3)) /* 1.3 */
return NULL;
gl_vtable->has_texture_from_pixmap = TRUE;
}
pixo = calloc(1, sizeof(*pixo));
if (!pixo)
return NULL;
pixo->dpy = dpy;
pixo->width = width;
pixo->height = height;
pixo->pixmap = None;
pixo->glx_pixmap = None;
pixo->is_bound = FALSE;
XGetWindowAttributes(dpy, rootwin, &wattr);
pixo->pixmap = XCreatePixmap(dpy, rootwin, width, height, wattr.depth);
if (!pixo->pixmap)
goto error;
/* Initialize FBConfig attributes */
for (attr = fbconfig_attrs; *attr != GL_NONE; attr += 2)
;
*attr++ = GLX_DEPTH_SIZE; *attr++ = wattr.depth;
if (wattr.depth == 32) {
*attr++ = GLX_ALPHA_SIZE; *attr++ = 8;
*attr++ = GLX_BIND_TO_TEXTURE_RGBA_EXT; *attr++ = GL_TRUE;
}
else {
*attr++ = GLX_BIND_TO_TEXTURE_RGB_EXT; *attr++ = GL_TRUE;
}
*attr++ = GL_NONE;
fbconfig = glXChooseFBConfig(
dpy,
screen,
fbconfig_attrs, &n_fbconfig_attrs
);
if (!fbconfig)
goto error;
/* Initialize GLX Pixmap attrutes */
for (attr = pixmap_attrs; *attr != GL_NONE; attr += 2)
;
*attr++ = GLX_TEXTURE_FORMAT_EXT;
if (wattr.depth == 32)
*attr++ = GLX_TEXTURE_FORMAT_RGBA_EXT;
else
*attr++ = GLX_TEXTURE_FORMAT_RGB_EXT;
*attr++ = GL_NONE;
x11_trap_errors();
pixo->glx_pixmap = glXCreatePixmap(dpy, fbconfig[0], pixo->pixmap, pixmap_attrs);
free(fbconfig);
if (x11_untrap_errors() != 0)
goto error;
return pixo;
error:
gl_destroy_pixmap_object(pixo);
return NULL;
}
/**
* gl_destroy_pixmap_object:
* @pixo: a #GLPixmapObject
*
* Destroys the #GLPixmapObject object.
*/
void
gl_destroy_pixmap_object(GLPixmapObject *pixo)
{
if (!pixo)
return;
gl_unbind_pixmap_object(pixo);
if (pixo->glx_pixmap) {
glXDestroyPixmap(pixo->dpy, pixo->glx_pixmap);
pixo->glx_pixmap = None;
}
if (pixo->pixmap) {
XFreePixmap(pixo->dpy, pixo->pixmap);
pixo->pixmap = None;
}
free(pixo);
}
/**
* gl_bind_pixmap_object:
* @pixo: a #GLPixmapObject
*
* Defines a two-dimensional texture image. The texture image is taken
* from the @pixo pixmap and need not be copied. The texture target,
* format and size are derived from attributes of the @pixo pixmap.
*
* Return value: %TRUE on success
*/
gboolean
gl_bind_pixmap_object(GLPixmapObject *pixo)
{
GLVTable * const gl_vtable = gl_get_vtable();
if (pixo->is_bound)
return TRUE;
x11_trap_errors();
gl_vtable->glx_bind_tex_image(
pixo->dpy,
pixo->glx_pixmap,
GLX_FRONT_LEFT_EXT,
NULL
);
XSync(pixo->dpy, False);
if (x11_untrap_errors() != 0) {
GST_DEBUG("failed to bind pixmap");
return FALSE;
}
pixo->is_bound = TRUE;
return TRUE;
}
/**
* gl_unbind_pixmap_object:
* @pixo: a #GLPixmapObject
*
* Releases a color buffers that is being used as a texture.
*
* Return value: %TRUE on success
*/
gboolean
gl_unbind_pixmap_object(GLPixmapObject *pixo)
{
GLVTable * const gl_vtable = gl_get_vtable();
if (!pixo->is_bound)
return TRUE;
x11_trap_errors();
gl_vtable->glx_release_tex_image(
pixo->dpy,
pixo->glx_pixmap,
GLX_FRONT_LEFT_EXT
);
XSync(pixo->dpy, False);
if (x11_untrap_errors() != 0) {
GST_DEBUG("failed to release pixmap");
return FALSE;
}
pixo->is_bound = FALSE;
return TRUE;
}
/**
* gl_create_framebuffer_object:
* @target: the target to which the texture is bound
* @texture: the GL texture to hold the framebuffer
* @width: the requested width, in pixels
* @height: the requested height, in pixels
*
* Creates an FBO with the specified texture and size.
*
* Return value: the newly created #GLFramebufferObject, or %NULL if
* an error occurred
*/
GLFramebufferObject *
gl_create_framebuffer_object(
GLenum target,
GLuint texture,
guint width,
guint height
)
{
GLVTable * const gl_vtable = gl_get_vtable();
GLFramebufferObject *fbo;
GLTextureState ts;
GLenum status;
gboolean texture_was_bound;
if (!gl_vtable || !gl_vtable->has_framebuffer_object)
return NULL;
/* XXX: we only support GL_TEXTURE_2D at this time */
if (target != GL_TEXTURE_2D)
return NULL;
fbo = calloc(1, sizeof(*fbo));
if (!fbo)
return NULL;
fbo->width = width;
fbo->height = height;
fbo->fbo = 0;
fbo->fbo_buffer = 0;
fbo->fbo_target = target;
fbo->fbo_texture = 0;
fbo->old_fbo = 0;
fbo->is_bound = FALSE;
fbo->fbo_texture = gl_create_texture(target, GL_BGRA, width, height);
if (!fbo->fbo_texture)
goto error;
gl_get_param(GL_FRAMEBUFFER_BINDING, &fbo->old_fbo);
gl_vtable->gl_gen_framebuffers(1, &fbo->fbo);
gl_vtable->gl_bind_framebuffer(GL_FRAMEBUFFER_EXT, fbo->fbo);
gl_vtable->gl_gen_renderbuffers(1, &fbo->fbo_buffer);
gl_vtable->gl_bind_renderbuffer(GL_RENDERBUFFER_EXT, fbo->fbo_buffer);
texture_was_bound = gl_bind_texture(&ts, target, texture);
if (texture_was_bound) {
gl_vtable->gl_framebuffer_texture_2d(
GL_FRAMEBUFFER_EXT,
GL_COLOR_ATTACHMENT0_EXT,
target, texture,
0
);
gl_unbind_texture(&ts);
}
status = gl_vtable->gl_check_framebuffer_status(GL_DRAW_FRAMEBUFFER_EXT);
gl_vtable->gl_bind_framebuffer(GL_FRAMEBUFFER_EXT, fbo->old_fbo);
if (!texture_was_bound || status != GL_FRAMEBUFFER_COMPLETE_EXT)
goto error;
return fbo;
error:
gl_destroy_framebuffer_object(fbo);
return NULL;
}
/**
* gl_destroy_framebuffer_object:
* @fbo: a #GLFramebufferObject
*
* Destroys the @fbo object.
*/
void
gl_destroy_framebuffer_object(GLFramebufferObject *fbo)
{
GLVTable * const gl_vtable = gl_get_vtable();
if (!fbo)
return;
gl_unbind_framebuffer_object(fbo);
if (fbo->fbo_texture) {
glDeleteTextures(1, &fbo->fbo_texture);
fbo->fbo_texture = 0;
}
if (fbo->fbo_buffer) {
gl_vtable->gl_delete_renderbuffers(1, &fbo->fbo_buffer);
fbo->fbo_buffer = 0;
}
if (fbo->fbo) {
gl_vtable->gl_delete_framebuffers(1, &fbo->fbo);
fbo->fbo = 0;
}
free(fbo);
}
/**
* gl_bind_framebuffer_object:
* @fbo: a #GLFramebufferObject
*
* Binds @fbo object.
*
* Return value: %TRUE on success
*/
gboolean
gl_bind_framebuffer_object(GLFramebufferObject *fbo)
{
GLVTable * const gl_vtable = gl_get_vtable();
const guint width = fbo->width;
const guint height = fbo->height;
const guint attribs = (GL_VIEWPORT_BIT|
GL_CURRENT_BIT|
GL_ENABLE_BIT|
GL_TEXTURE_BIT|
GL_COLOR_BUFFER_BIT);
if (fbo->is_bound)
return TRUE;
gl_get_param(GL_FRAMEBUFFER_BINDING, &fbo->old_fbo);
gl_vtable->gl_bind_framebuffer(GL_FRAMEBUFFER_EXT, fbo->fbo);
glPushAttrib(attribs);
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glLoadIdentity();
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
glLoadIdentity();
glViewport(0, 0, width, height);
glTranslatef(-1.0f, -1.0f, 0.0f);
glScalef(2.0f / width, 2.0f / height, 1.0f);
if (!gl_bind_texture(&fbo->old_texture, fbo->fbo_target, fbo->fbo_texture))
return FALSE;
fbo->is_bound = TRUE;
return TRUE;
}
/**
* gl_unbind_framebuffer_object:
* @fbo: a #GLFramebufferObject
*
* Releases @fbo object.
*
* Return value: %TRUE on success
*/
gboolean
gl_unbind_framebuffer_object(GLFramebufferObject *fbo)
{
GLVTable * const gl_vtable = gl_get_vtable();
if (!fbo->is_bound)
return TRUE;
glPopAttrib();
glMatrixMode(GL_PROJECTION);
glPopMatrix();
glMatrixMode(GL_MODELVIEW);
glPopMatrix();
gl_vtable->gl_bind_framebuffer(GL_FRAMEBUFFER_EXT, fbo->old_fbo);
fbo->is_bound = FALSE;
return TRUE;
}

View file

@ -23,9 +23,20 @@
#include "config.h"
#include <GL/gl.h>
#include <GL/glext.h>
#include <GL/glx.h>
#include <GL/glxext.h>
#include <glib/gtypes.h>
#if GLX_GLXEXT_VERSION < 18
typedef void (*PFNGLXBINDTEXIMAGEEXTPROC)(Display *, GLXDrawable, int, const int *);
typedef void (*PFNGLXRELEASETEXIMAGEEXTPROC)(Display *, GLXDrawable, int);
#endif
#ifndef GL_FRAMEBUFFER_BINDING
#define GL_FRAMEBUFFER_BINDING GL_FRAMEBUFFER_BINDING_EXT
#endif
const char *
gl_get_error_string(GLenum error)
attribute_hidden;
@ -88,4 +99,95 @@ GLuint
gl_create_texture(GLenum target, GLenum format, guint width, guint height)
attribute_hidden;
typedef struct _GLVTable GLVTable;
struct _GLVTable {
PFNGLXBINDTEXIMAGEEXTPROC glx_bind_tex_image;
PFNGLXRELEASETEXIMAGEEXTPROC glx_release_tex_image;
PFNGLGENFRAMEBUFFERSEXTPROC gl_gen_framebuffers;
PFNGLDELETEFRAMEBUFFERSEXTPROC gl_delete_framebuffers;
PFNGLBINDFRAMEBUFFEREXTPROC gl_bind_framebuffer;
PFNGLGENRENDERBUFFERSEXTPROC gl_gen_renderbuffers;
PFNGLDELETERENDERBUFFERSEXTPROC gl_delete_renderbuffers;
PFNGLBINDRENDERBUFFEREXTPROC gl_bind_renderbuffer;
PFNGLRENDERBUFFERSTORAGEEXTPROC gl_renderbuffer_storage;
PFNGLFRAMEBUFFERRENDERBUFFEREXTPROC gl_framebuffer_renderbuffer;
PFNGLFRAMEBUFFERTEXTURE2DEXTPROC gl_framebuffer_texture_2d;
PFNGLCHECKFRAMEBUFFERSTATUSEXTPROC gl_check_framebuffer_status;
PFNGLGENPROGRAMSARBPROC gl_gen_programs;
PFNGLDELETEPROGRAMSARBPROC gl_delete_programs;
PFNGLBINDPROGRAMARBPROC gl_bind_program;
PFNGLPROGRAMSTRINGARBPROC gl_program_string;
PFNGLGETPROGRAMIVARBPROC gl_get_program_iv;
PFNGLPROGRAMLOCALPARAMETER4FVARBPROC gl_program_local_parameter_4fv;
PFNGLACTIVETEXTUREPROC gl_active_texture;
PFNGLMULTITEXCOORD2FPROC gl_multi_tex_coord_2f;
guint has_texture_from_pixmap : 1;
guint has_framebuffer_object : 1;
guint has_fragment_program : 1;
guint has_multitexture : 1;
};
GLVTable *
gl_get_vtable(void)
attribute_hidden;
typedef struct _GLPixmapObject GLPixmapObject;
struct _GLPixmapObject {
Display *dpy;
guint width;
guint height;
Pixmap pixmap;
GLXPixmap glx_pixmap;
guint is_bound : 1;
};
GLPixmapObject *
gl_create_pixmap_object(Display *dpy, guint width, guint height)
attribute_hidden;
void
gl_destroy_pixmap_object(GLPixmapObject *pixo)
attribute_hidden;
gboolean
gl_bind_pixmap_object(GLPixmapObject *pixo)
attribute_hidden;
gboolean
gl_unbind_pixmap_object(GLPixmapObject *pixo)
attribute_hidden;
typedef struct _GLFramebufferObject GLFramebufferObject;
struct _GLFramebufferObject {
guint width;
guint height;
GLuint fbo;
GLuint fbo_buffer;
GLenum fbo_target;
GLuint fbo_texture;
GLuint old_fbo;
GLTextureState old_texture;
guint is_bound : 1;
};
GLFramebufferObject *
gl_create_framebuffer_object(
GLenum target,
GLuint texture,
guint width,
guint height
) attribute_hidden;
void
gl_destroy_framebuffer_object(GLFramebufferObject *fbo)
attribute_hidden;
gboolean
gl_bind_framebuffer_object(GLFramebufferObject *fbo)
attribute_hidden;
gboolean
gl_unbind_framebuffer_object(GLFramebufferObject *fbo)
attribute_hidden;
#endif /* GST_VAAPI_UTILS_GLX_H */