/*
* Copyright (C) 2009 Splitted-Desktop Systems. All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#define _GNU_SOURCE 1
#include "sysdeps.h"
#include "va_glx_private.h"
#include "va_glx_impl.h"
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#include <assert.h>
#include <dlfcn.h>
static void va_glx_error_message(const char *format, ...)
{
va_list args;
va_start(args, format);
fprintf(stderr, "libva-glx error: ");
vfprintf(stderr, format, args);
va_end(args);
}
// X error trap
static int x11_error_code = 0;
static int (*old_error_handler)(Display *, XErrorEvent *);
static int error_handler(Display *dpy, XErrorEvent *error)
{
x11_error_code = error->error_code;
return 0;
}
static void x11_trap_errors(void)
{
x11_error_code = 0;
old_error_handler = XSetErrorHandler(error_handler);
}
static int x11_untrap_errors(void)
{
XSetErrorHandler(old_error_handler);
return x11_error_code;
}
// Returns a string representation of an OpenGL error
static const char *gl_get_error_string(GLenum error)
{
static const struct {
GLenum val;
const char *str;
}
gl_errors[] = {
{ GL_NO_ERROR, "no error" },
{ GL_INVALID_ENUM, "invalid enumerant" },
{ GL_INVALID_VALUE, "invalid value" },
{ GL_INVALID_OPERATION, "invalid operation" },
{ GL_STACK_OVERFLOW, "stack overflow" },
{ GL_STACK_UNDERFLOW, "stack underflow" },
{ GL_OUT_OF_MEMORY, "out of memory" },
#ifdef GL_INVALID_FRAMEBUFFER_OPERATION_EXT
{ GL_INVALID_FRAMEBUFFER_OPERATION_EXT, "invalid framebuffer operation" },
#endif
{ ~0, NULL }
};
int i;
for (i = 0; gl_errors[i].str; i++) {
if (gl_errors[i].val == error)
return gl_errors[i].str;
}
return "unknown";
}
static inline int gl_do_check_error(int report)
{
GLenum error;
int is_error = 0;
while ((error = glGetError()) != GL_NO_ERROR) {
if (report)
va_glx_error_message("glError: %s caught\n",
gl_get_error_string(error));
is_error = 1;
}
return is_error;
}
static inline void gl_purge_errors(void)
{
gl_do_check_error(0);
}
static inline int gl_check_error(void)
{
return gl_do_check_error(1);
}
// glGetTexLevelParameteriv() wrapper
static int gl_get_texture_param(GLenum param, unsigned int *pval)
{
GLint val;
gl_purge_errors();
glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, param, &val);
if (gl_check_error())
return 0;
if (pval)
*pval = val;
return 1;
}
// Returns the OpenGL VTable
static inline VAOpenGLVTableP gl_get_vtable(VADriverContextP ctx)
{
return &VA_DRIVER_CONTEXT_GLX(ctx)->gl_vtable;
}
// Lookup for a GLX function
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);
}
// Check for GLX extensions (TFP, FBO)
static int check_extension(const char *name, const char *ext)
{
const char *end;
int name_len, n;
if (!name || !ext)
return 0;
end = ext + strlen(ext);
name_len = strlen(name);
while (ext < end) {
n = strcspn(ext, " ");
if (n == name_len && strncmp(name, ext, n) == 0)
return 1;
ext += (n + 1);
}
return 0;
}
static int check_extension3(const char *name)
{
int nbExtensions, i;
PFNGLGETSTRINGIPROC glGetStringi = 0;
glGetStringi = (PFNGLGETSTRINGIPROC) get_proc_address("glGetStringi");
if(!glGetStringi)
return 0;
glGetIntegerv(GL_NUM_EXTENSIONS, &nbExtensions);
for(i = 0; i < nbExtensions; i++)
{
const GLubyte *strExtension = glGetStringi(GL_EXTENSIONS, i);
if(strcmp((const char *) strExtension, name) == 0)
return 1;
}
return 0;
}
static int check_tfp_extensions(VADriverContextP ctx)
{
const char *gl_extensions;
const char *glx_extensions;
gl_extensions = (const char *)glGetString(GL_EXTENSIONS);
if (!check_extension("GL_ARB_texture_non_power_of_two", gl_extensions) && !check_extension3("GL_ARB_texture_non_power_of_two"))
return 0;
glx_extensions = glXQueryExtensionsString(ctx->native_dpy, ctx->x11_screen);
if (!check_extension("GLX_EXT_texture_from_pixmap", glx_extensions))
return 0;
return 1;
}
static int check_fbo_extensions(VADriverContextP ctx)
{
const char *gl_extensions;
gl_extensions = (const char *)glGetString(GL_EXTENSIONS);
if (check_extension("GL_ARB_framebuffer_object", gl_extensions) || check_extension3("GL_ARB_framebuffer_object"))
return 1;
if (check_extension("GL_EXT_framebuffer_object", gl_extensions) || check_extension3("GL_EXT_framebuffer_object"))
return 1;
return 0;
}
// Load GLX extensions
static int load_tfp_extensions(VADriverContextP ctx)
{
VAOpenGLVTableP pOpenGLVTable = gl_get_vtable(ctx);
pOpenGLVTable->glx_create_pixmap = (PFNGLXCREATEPIXMAPPROC)
get_proc_address("glXCreatePixmap");
if (!pOpenGLVTable->glx_create_pixmap)
return 0;
pOpenGLVTable->glx_destroy_pixmap = (PFNGLXDESTROYPIXMAPPROC)
get_proc_address("glXDestroyPixmap");
if (!pOpenGLVTable->glx_destroy_pixmap)
return 0;
pOpenGLVTable->glx_bind_tex_image = (PFNGLXBINDTEXIMAGEEXTPROC)
get_proc_address("glXBindTexImageEXT");
if (!pOpenGLVTable->glx_bind_tex_image)
return 0;
pOpenGLVTable->glx_release_tex_image = (PFNGLXRELEASETEXIMAGEEXTPROC)
get_proc_address("glXReleaseTexImageEXT");
if (!pOpenGLVTable->glx_release_tex_image)
return 0;
return 1;
}
static int load_fbo_extensions(VADriverContextP ctx)
{
VAOpenGLVTableP pOpenGLVTable = gl_get_vtable(ctx);
pOpenGLVTable->gl_gen_framebuffers = (PFNGLGENFRAMEBUFFERSEXTPROC)
get_proc_address("glGenFramebuffersEXT");
if (!pOpenGLVTable->gl_gen_framebuffers)
return 0;
pOpenGLVTable->gl_delete_framebuffers = (PFNGLDELETEFRAMEBUFFERSEXTPROC)
get_proc_address("glDeleteFramebuffersEXT");
if (!pOpenGLVTable->gl_delete_framebuffers)
return 0;
pOpenGLVTable->gl_bind_framebuffer = (PFNGLBINDFRAMEBUFFEREXTPROC)
get_proc_address("glBindFramebufferEXT");
if (!pOpenGLVTable->gl_bind_framebuffer)
return 0;
pOpenGLVTable->gl_gen_renderbuffers = (PFNGLGENRENDERBUFFERSEXTPROC)
get_proc_address("glGenRenderbuffersEXT");
if (!pOpenGLVTable->gl_gen_renderbuffers)
return 0;
pOpenGLVTable->gl_delete_renderbuffers = (PFNGLDELETERENDERBUFFERSEXTPROC)
get_proc_address("glDeleteRenderbuffersEXT");
if (!pOpenGLVTable->gl_delete_renderbuffers)
return 0;
pOpenGLVTable->gl_bind_renderbuffer = (PFNGLBINDRENDERBUFFEREXTPROC)
get_proc_address("glBindRenderbufferEXT");
if (!pOpenGLVTable->gl_bind_renderbuffer)
return 0;
pOpenGLVTable->gl_renderbuffer_storage = (PFNGLRENDERBUFFERSTORAGEEXTPROC)
get_proc_address("glRenderbufferStorageEXT");
if (!pOpenGLVTable->gl_renderbuffer_storage)
return 0;
pOpenGLVTable->gl_framebuffer_renderbuffer = (PFNGLFRAMEBUFFERRENDERBUFFEREXTPROC)
get_proc_address("glFramebufferRenderbufferEXT");
if (!pOpenGLVTable->gl_framebuffer_renderbuffer)
return 0;
pOpenGLVTable->gl_framebuffer_texture_2d = (PFNGLFRAMEBUFFERTEXTURE2DEXTPROC)
get_proc_address("glFramebufferTexture2DEXT");
if (!pOpenGLVTable->gl_framebuffer_texture_2d)
return 0;
pOpenGLVTable->gl_check_framebuffer_status = (PFNGLCHECKFRAMEBUFFERSTATUSEXTPROC)
get_proc_address("glCheckFramebufferStatusEXT");
if (!pOpenGLVTable->gl_check_framebuffer_status)
return 0;
return 1;
}
/* ========================================================================= */
/* === VA/GLX helpers === */
/* ========================================================================= */
// OpenGL context state
typedef struct OpenGLContextState *OpenGLContextStateP;
struct OpenGLContextState {
Display *display;
Window window;
GLXContext context;
};
static void
gl_destroy_context(OpenGLContextStateP cs)
{
if (!cs)
return;
if (cs->display && cs->context) {
if (glXGetCurrentContext() == cs->context)
glXMakeCurrent(cs->display, None, NULL);
glXDestroyContext(cs->display, cs->context);
cs->display = NULL;
cs->context = NULL;
}
free(cs);
}
static OpenGLContextStateP
gl_create_context(VADriverContextP ctx, OpenGLContextStateP parent)
{
OpenGLContextStateP cs;
GLXFBConfig *fbconfigs = NULL;
int fbconfig_id, val, n, n_fbconfigs;
Status status;
static GLint fbconfig_attrs[] = {
GLX_DRAWABLE_TYPE, GLX_WINDOW_BIT,
GLX_RENDER_TYPE, GLX_RGBA_BIT,
GLX_DOUBLEBUFFER, True,
GLX_RED_SIZE, 8,
GLX_GREEN_SIZE, 8,
GLX_BLUE_SIZE, 8,
None
};
cs = malloc(sizeof(*cs));
if (!cs)
goto error;
if (parent) {
cs->display = parent->display;
cs->window = parent->window;
}
else {
cs->display = ctx->native_dpy;
cs->window = None;
}
cs->context = NULL;
if (parent && parent->context) {
status = glXQueryContext(
parent->display,
parent->context,
GLX_FBCONFIG_ID, &fbconfig_id
);
if (status != Success)
goto error;
if (fbconfig_id == GLX_DONT_CARE)
goto choose_fbconfig;
fbconfigs = glXGetFBConfigs(
parent->display,
DefaultScreen(parent->display),
&n_fbconfigs
);
if (!fbconfigs)
goto error;
/* Find out a GLXFBConfig compatible with the parent context */
for (n = 0; n < n_fbconfigs; n++) {
status = glXGetFBConfigAttrib(
cs->display,
fbconfigs[n],
GLX_FBCONFIG_ID, &val
);
if (status == Success && val == fbconfig_id)
break;
}
if (n == n_fbconfigs)
goto error;
}
else {
choose_fbconfig:
fbconfigs = glXChooseFBConfig(
ctx->native_dpy,
ctx->x11_screen,
fbconfig_attrs, &n_fbconfigs
);
if (!fbconfigs)
goto error;
/* Select the first one */
n = 0;
}
cs->context = glXCreateNewContext(
cs->display,
fbconfigs[n],
GLX_RGBA_TYPE,
parent ? parent->context : NULL,
True
);
if (cs->context)
goto end;
error:
gl_destroy_context(cs);
cs = NULL;
end:
if (fbconfigs)
XFree(fbconfigs);
return cs;
}
static void gl_get_current_context(OpenGLContextStateP cs)
{
cs->display = glXGetCurrentDisplay();
cs->window = glXGetCurrentDrawable();
cs->context = glXGetCurrentContext();
}
static int
gl_set_current_context(OpenGLContextStateP new_cs, OpenGLContextStateP old_cs)
{
/* If display is NULL, this could be that new_cs was retrieved from
gl_get_current_context() with none set previously. If that case,
the other fields are also NULL and we don't return an error */
if (!new_cs->display)
return !new_cs->window && !new_cs->context;
if (old_cs) {
if (old_cs == new_cs)
return 1;
gl_get_current_context(old_cs);
if (old_cs->display == new_cs->display &&
old_cs->window == new_cs->window &&
old_cs->context == new_cs->context)
return 1;
}
return glXMakeCurrent(new_cs->display, new_cs->window, new_cs->context);
}
/** Unique VASurfaceGLX identifier */
#define VA_SURFACE_GLX_MAGIC VA_FOURCC('V','A','G','L')
struct VASurfaceGLX {
uint32_t magic; ///< Magic number identifying a VASurfaceGLX
GLenum target; ///< GL target to which the texture is bound
GLuint texture; ///< GL texture
VASurfaceID surface; ///< Associated VA surface
unsigned int width;
unsigned int height;
OpenGLContextStateP gl_context;
int is_bound;
Pixmap pixmap;
GLuint pix_texture;
GLXPixmap glx_pixmap;
GLuint fbo;
};
// Create Pixmaps for GLX texture-from-pixmap extension
static int create_tfp_surface(VADriverContextP ctx, VASurfaceGLXP pSurfaceGLX)
{
VAOpenGLVTableP const pOpenGLVTable = gl_get_vtable(ctx);
const unsigned int width = pSurfaceGLX->width;
const unsigned int height = pSurfaceGLX->height;
Pixmap pixmap = None;
GLXFBConfig *fbconfig = NULL;
GLXPixmap glx_pixmap = None;
Window root_window;
XWindowAttributes wattr;
int *attrib;
int n_fbconfig_attrs;
root_window = RootWindow(ctx->native_dpy, ctx->x11_screen);
XGetWindowAttributes(ctx->native_dpy, root_window, &wattr);
if (wattr.depth != 24 && wattr.depth != 32)
return 0;
pixmap = XCreatePixmap(
ctx->native_dpy,
root_window,
width,
height,
wattr.depth
);
if (!pixmap)
return 0;
pSurfaceGLX->pixmap = pixmap;
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,
/*
* depth test isn't enabled in the implementaion of VA GLX,
* so depth buffer is unnecessary. However to workaround a
* bug in older verson of xorg-server, always require a depth
* buffer.
*
* See https://bugs.freedesktop.org/show_bug.cgi?id=76755
*/
GLX_DEPTH_SIZE, 1,
GL_NONE,
};
for (attrib = fbconfig_attrs; *attrib != GL_NONE; attrib += 2)
;
if (wattr.depth == 32) {
*attrib++ = GLX_ALPHA_SIZE; *attrib++ = 8;
*attrib++ = GLX_BIND_TO_TEXTURE_RGBA_EXT; *attrib++ = GL_TRUE;
}
else {
*attrib++ = GLX_BIND_TO_TEXTURE_RGB_EXT; *attrib++ = GL_TRUE;
}
*attrib++ = GL_NONE;
fbconfig = glXChooseFBConfig(
ctx->native_dpy,
ctx->x11_screen,
fbconfig_attrs,
&n_fbconfig_attrs
);
if (!fbconfig)
return 0;
int pixmap_attrs[10] = {
GLX_TEXTURE_TARGET_EXT, GLX_TEXTURE_2D_EXT,
GLX_MIPMAP_TEXTURE_EXT, GL_FALSE,
GL_NONE,
};
for (attrib = pixmap_attrs; *attrib != GL_NONE; attrib += 2)
;
*attrib++ = GLX_TEXTURE_FORMAT_EXT;
if (wattr.depth == 32)
*attrib++ = GLX_TEXTURE_FORMAT_RGBA_EXT;
else
*attrib++ = GLX_TEXTURE_FORMAT_RGB_EXT;
*attrib++ = GL_NONE;
x11_trap_errors();
glx_pixmap = pOpenGLVTable->glx_create_pixmap(
ctx->native_dpy,
fbconfig[0],
pixmap,
pixmap_attrs
);
free(fbconfig);
if (x11_untrap_errors() != 0)
return 0;
pSurfaceGLX->glx_pixmap = glx_pixmap;
glGenTextures(1, &pSurfaceGLX->pix_texture);
glBindTexture(GL_TEXTURE_2D, pSurfaceGLX->pix_texture);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
return 1;
}
// Destroy Pixmaps used for TFP
static void destroy_tfp_surface(VADriverContextP ctx, VASurfaceGLXP pSurfaceGLX)
{
VAOpenGLVTableP const pOpenGLVTable = gl_get_vtable(ctx);
if (pSurfaceGLX->pix_texture) {
glDeleteTextures(1, &pSurfaceGLX->pix_texture);
pSurfaceGLX->pix_texture = 0;
}
if (pSurfaceGLX->glx_pixmap) {
pOpenGLVTable->glx_destroy_pixmap(ctx->native_dpy, pSurfaceGLX->glx_pixmap);
pSurfaceGLX->glx_pixmap = None;
}
if (pSurfaceGLX->pixmap) {
XFreePixmap(ctx->native_dpy, pSurfaceGLX->pixmap);
pSurfaceGLX->pixmap = None;
}
}
// Bind GLX Pixmap to texture
static int bind_pixmap(VADriverContextP ctx, VASurfaceGLXP pSurfaceGLX)
{
VAOpenGLVTableP pOpenGLVTable = gl_get_vtable(ctx);
if (pSurfaceGLX->is_bound)
return 1;
glBindTexture(GL_TEXTURE_2D, pSurfaceGLX->pix_texture);
x11_trap_errors();
pOpenGLVTable->glx_bind_tex_image(
ctx->native_dpy,
pSurfaceGLX->glx_pixmap,
GLX_FRONT_LEFT_EXT,
NULL
);
XSync(ctx->native_dpy, False);
if (x11_untrap_errors() != 0) {
va_glx_error_message("failed to bind pixmap\n");
return 0;
}
pSurfaceGLX->is_bound = 1;
return 1;
}
// Release GLX Pixmap from texture
static int unbind_pixmap(VADriverContextP ctx, VASurfaceGLXP pSurfaceGLX)
{
VAOpenGLVTableP pOpenGLVTable = gl_get_vtable(ctx);
if (!pSurfaceGLX->is_bound)
return 1;
x11_trap_errors();
pOpenGLVTable->glx_release_tex_image(
ctx->native_dpy,
pSurfaceGLX->glx_pixmap,
GLX_FRONT_LEFT_EXT
);
XSync(ctx->native_dpy, False);
if (x11_untrap_errors() != 0) {
va_glx_error_message("failed to release pixmap\n");
return 0;
}
glBindTexture(GL_TEXTURE_2D, 0);
pSurfaceGLX->is_bound = 0;
return 1;
}
// Render GLX Pixmap to texture
static void render_pixmap(VADriverContextP ctx, VASurfaceGLXP pSurfaceGLX)
{
const unsigned int w = pSurfaceGLX->width;
const unsigned int h = pSurfaceGLX->height;
glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
glBegin(GL_QUADS);
{
glTexCoord2f(0.0f, 0.0f); glVertex2i(0, 0);
glTexCoord2f(0.0f, 1.0f); glVertex2i(0, h);
glTexCoord2f(1.0f, 1.0f); glVertex2i(w, h);
glTexCoord2f(1.0f, 0.0f); glVertex2i(w, 0);
}
glEnd();
}
// Create offscreen surface
static int create_fbo_surface(VADriverContextP ctx, VASurfaceGLXP pSurfaceGLX)
{
VAOpenGLVTableP pOpenGLVTable = gl_get_vtable(ctx);
GLuint fbo;
GLenum status;
pOpenGLVTable->gl_gen_framebuffers(1, &fbo);
pOpenGLVTable->gl_bind_framebuffer(GL_FRAMEBUFFER_EXT, fbo);
pOpenGLVTable->gl_framebuffer_texture_2d(
GL_FRAMEBUFFER_EXT,
GL_COLOR_ATTACHMENT0_EXT,
GL_TEXTURE_2D,
pSurfaceGLX->texture,
0
);
status = pOpenGLVTable->gl_check_framebuffer_status(GL_DRAW_FRAMEBUFFER_EXT);
pOpenGLVTable->gl_bind_framebuffer(GL_FRAMEBUFFER_EXT, 0);
if (status != GL_FRAMEBUFFER_COMPLETE_EXT)
return 0;
pSurfaceGLX->fbo = fbo;
return 1;
}
// Destroy offscreen surface
static void destroy_fbo_surface(VADriverContextP ctx, VASurfaceGLXP pSurfaceGLX)
{
VAOpenGLVTableP pOpenGLVTable = gl_get_vtable(ctx);
if (pSurfaceGLX->fbo) {
pOpenGLVTable->gl_delete_framebuffers(1, &pSurfaceGLX->fbo);
pSurfaceGLX->fbo = 0;
}
}
// Setup matrices to match the FBO texture dimensions
static void fbo_enter(VADriverContextP ctx, VASurfaceGLXP pSurfaceGLX)
{
VAOpenGLVTableP pOpenGLVTable = gl_get_vtable(ctx);
const unsigned int width = pSurfaceGLX->width;
const unsigned int height = pSurfaceGLX->height;
pOpenGLVTable->gl_bind_framebuffer(GL_FRAMEBUFFER_EXT, pSurfaceGLX->fbo);
glPushAttrib(GL_VIEWPORT_BIT);
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);
}
// Restore original OpenGL matrices
static void fbo_leave(VADriverContextP ctx)
{
VAOpenGLVTableP pOpenGLVTable = gl_get_vtable(ctx);
glPopAttrib();
glMatrixMode(GL_PROJECTION);
glPopMatrix();
glMatrixMode(GL_MODELVIEW);
glPopMatrix();
pOpenGLVTable->gl_bind_framebuffer(GL_FRAMEBUFFER_EXT, 0);
}
// Check internal texture format is supported
static int is_supported_internal_format(GLenum format)
{
/* XXX: we don't support other textures than RGBA */
switch (format) {
case 4:
case GL_RGBA:
case GL_RGBA8:
return 1;
}
return 0;
}
// Destroy VA/GLX surface
static void
destroy_surface(VADriverContextP ctx, VASurfaceGLXP pSurfaceGLX)
{
unbind_pixmap(ctx, pSurfaceGLX);
destroy_fbo_surface(ctx, pSurfaceGLX);
destroy_tfp_surface(ctx, pSurfaceGLX);
free(pSurfaceGLX);
}
// Create VA/GLX surface
static VASurfaceGLXP
create_surface(VADriverContextP ctx, GLenum target, GLuint texture)
{
VASurfaceGLXP pSurfaceGLX = NULL;
unsigned int internal_format, border_width, width, height;
int is_error = 1;
pSurfaceGLX = malloc(sizeof(*pSurfaceGLX));
if (!pSurfaceGLX)
goto end;
pSurfaceGLX->magic = VA_SURFACE_GLX_MAGIC;
pSurfaceGLX->target = target;
pSurfaceGLX->texture = texture;
pSurfaceGLX->surface = VA_INVALID_SURFACE;
pSurfaceGLX->gl_context = NULL;
pSurfaceGLX->is_bound = 0;
pSurfaceGLX->pixmap = None;
pSurfaceGLX->pix_texture = 0;
pSurfaceGLX->glx_pixmap = None;
pSurfaceGLX->fbo = 0;
glEnable(target);
glBindTexture(target, texture);
if (!gl_get_texture_param(GL_TEXTURE_INTERNAL_FORMAT, &internal_format))
goto end;
if (!is_supported_internal_format(internal_format))
goto end;
/* Check texture dimensions */
if (!gl_get_texture_param(GL_TEXTURE_BORDER, &border_width))
goto end;
if (!gl_get_texture_param(GL_TEXTURE_WIDTH, &width))
goto end;
if (!gl_get_texture_param(GL_TEXTURE_HEIGHT, &height))
goto end;
width -= 2 * border_width;
height -= 2 * border_width;
if (width == 0 || height == 0)
goto end;
pSurfaceGLX->width = width;
pSurfaceGLX->height = height;
/* Create TFP objects */
if (!create_tfp_surface(ctx, pSurfaceGLX))
goto end;
/* Create FBO objects */
if (!create_fbo_surface(ctx, pSurfaceGLX))
goto end;
is_error = 0;
end:
if (is_error && pSurfaceGLX) {
destroy_surface(ctx, pSurfaceGLX);
pSurfaceGLX = NULL;
}
return pSurfaceGLX;
}
/* ========================================================================= */
/* === VA/GLX implementation from the driver (fordward calls) === */
/* ========================================================================= */
#define INVOKE(ctx, func, args) do { \
VADriverVTableGLXP vtable = (ctx)->vtable_glx; \
if (!vtable->va##func##GLX) \
return VA_STATUS_ERROR_UNIMPLEMENTED; \
\
VAStatus status = vtable->va##func##GLX args; \
if (status != VA_STATUS_SUCCESS) \
return status; \
} while (0)
static VAStatus
vaCreateSurfaceGLX_impl_driver(
VADriverContextP ctx,
GLenum target,
GLuint texture,
void **gl_surface
)
{
INVOKE(ctx, CreateSurface, (ctx, target, texture, gl_surface));
return VA_STATUS_SUCCESS;
}
static VAStatus
vaDestroySurfaceGLX_impl_driver(VADriverContextP ctx, void *gl_surface)
{
INVOKE(ctx, DestroySurface, (ctx, gl_surface));
return VA_STATUS_SUCCESS;
}
static VAStatus
vaCopySurfaceGLX_impl_driver(
VADriverContextP ctx,
void *gl_surface,
VASurfaceID surface,
unsigned int flags
)
{
INVOKE(ctx, CopySurface, (ctx, gl_surface, surface, flags));
return VA_STATUS_SUCCESS;
}
#undef INVOKE
/* ========================================================================= */
/* === VA/GLX implementation from libVA (generic and suboptimal path) === */
/* ========================================================================= */
#define INIT_SURFACE(surface, surface_arg) do { \
surface = (VASurfaceGLXP)(surface_arg); \
if (!check_surface(surface)) \
return VA_STATUS_ERROR_INVALID_SURFACE; \
} while (0)
// Check VASurfaceGLX is valid
static inline int check_surface(VASurfaceGLXP pSurfaceGLX)
{
return pSurfaceGLX && pSurfaceGLX->magic == VA_SURFACE_GLX_MAGIC;
}
static VAStatus
vaCreateSurfaceGLX_impl_libva(
VADriverContextP ctx,
GLenum target,
GLuint texture,
void **gl_surface
)
{
VASurfaceGLXP pSurfaceGLX;
struct OpenGLContextState old_cs, *new_cs;
gl_get_current_context(&old_cs);
new_cs = gl_create_context(ctx, &old_cs);
if (!new_cs)
goto error;
if (!gl_set_current_context(new_cs, NULL))
goto error;
pSurfaceGLX = create_surface(ctx, target, texture);
if (!pSurfaceGLX)
goto error;
pSurfaceGLX->gl_context = new_cs;
*gl_surface = pSurfaceGLX;
gl_set_current_context(&old_cs, NULL);
return VA_STATUS_SUCCESS;
error:
if (new_cs)
gl_destroy_context(new_cs);
return VA_STATUS_ERROR_ALLOCATION_FAILED;
}
static VAStatus
vaDestroySurfaceGLX_impl_libva(VADriverContextP ctx, void *gl_surface)
{
VASurfaceGLXP pSurfaceGLX;
struct OpenGLContextState old_cs, *new_cs;
INIT_SURFACE(pSurfaceGLX, gl_surface);
new_cs = pSurfaceGLX->gl_context;
if (!gl_set_current_context(new_cs, &old_cs))
return VA_STATUS_ERROR_OPERATION_FAILED;
destroy_surface(ctx, pSurfaceGLX);
gl_destroy_context(new_cs);
gl_set_current_context(&old_cs, NULL);
return VA_STATUS_SUCCESS;
}
static inline VAStatus
deassociate_surface(VADriverContextP ctx, VASurfaceGLXP pSurfaceGLX)
{
if (!unbind_pixmap(ctx, pSurfaceGLX))
return VA_STATUS_ERROR_OPERATION_FAILED;
pSurfaceGLX->surface = VA_INVALID_SURFACE;
return VA_STATUS_SUCCESS;
}
static VAStatus
associate_surface(
VADriverContextP ctx,
VASurfaceGLXP pSurfaceGLX,
VASurfaceID surface,
unsigned int flags
)
{
VAStatus status;
/* XXX: optimise case where we are associating the same VA surface
as before an no changed occurred to it */
status = deassociate_surface(ctx, pSurfaceGLX);
if (status != VA_STATUS_SUCCESS)
return status;
x11_trap_errors();
status = ctx->vtable->vaPutSurface(
ctx,
surface,
(void *)pSurfaceGLX->pixmap,
0, 0, pSurfaceGLX->width, pSurfaceGLX->height,
0, 0, pSurfaceGLX->width, pSurfaceGLX->height,
NULL, 0,
flags
);
XSync(ctx->native_dpy, False);
if (x11_untrap_errors() != 0)
return VA_STATUS_ERROR_OPERATION_FAILED;
if (status != VA_STATUS_SUCCESS)
return status;
pSurfaceGLX->surface = surface;
return VA_STATUS_SUCCESS;
}
static inline VAStatus
sync_surface(VADriverContextP ctx, VASurfaceGLXP pSurfaceGLX)
{
if (pSurfaceGLX->surface == VA_INVALID_SURFACE)
return VA_STATUS_ERROR_INVALID_SURFACE;
return ctx->vtable->vaSyncSurface(ctx, pSurfaceGLX->surface);
}
static inline VAStatus
begin_render_surface(VADriverContextP ctx, VASurfaceGLXP pSurfaceGLX)
{
VAStatus status;
status = sync_surface(ctx, pSurfaceGLX);
if (status != VA_STATUS_SUCCESS)
return status;
if (!bind_pixmap(ctx, pSurfaceGLX))
return VA_STATUS_ERROR_OPERATION_FAILED;
return VA_STATUS_SUCCESS;
}
static inline VAStatus
end_render_surface(VADriverContextP ctx, VASurfaceGLXP pSurfaceGLX)
{
if (!unbind_pixmap(ctx, pSurfaceGLX))
return VA_STATUS_ERROR_OPERATION_FAILED;
return VA_STATUS_SUCCESS;
}
static VAStatus
copy_surface(
VADriverContextP ctx,
VASurfaceGLXP pSurfaceGLX,
VASurfaceID surface,
unsigned int flags
)
{
VAStatus status;
/* Associate VA surface */
status = associate_surface(ctx, pSurfaceGLX, surface, flags);
if (status != VA_STATUS_SUCCESS)
return status;
/* Render to FBO */
fbo_enter(ctx, pSurfaceGLX);
status = begin_render_surface(ctx, pSurfaceGLX);
if (status == VA_STATUS_SUCCESS) {
render_pixmap(ctx, pSurfaceGLX);
status = end_render_surface(ctx, pSurfaceGLX);
}
fbo_leave(ctx);
if (status != VA_STATUS_SUCCESS)
return status;
return deassociate_surface(ctx, pSurfaceGLX);
}
static VAStatus
vaCopySurfaceGLX_impl_libva(
VADriverContextP ctx,
void *gl_surface,
VASurfaceID surface,
unsigned int flags
)
{
VASurfaceGLXP pSurfaceGLX;
VAStatus status;
struct OpenGLContextState old_cs;
INIT_SURFACE(pSurfaceGLX, gl_surface);
if (!gl_set_current_context(pSurfaceGLX->gl_context, &old_cs))
return VA_STATUS_ERROR_OPERATION_FAILED;
status = copy_surface(ctx, pSurfaceGLX, surface, flags);
gl_set_current_context(&old_cs, NULL);
return status;
}
#undef INIT_SURFACE
/* ========================================================================= */
/* === Private VA/GLX vtable initialization === */
/* ========================================================================= */
// Initialize GLX driver context
VAStatus va_glx_init_context(VADriverContextP ctx)
{
VADriverContextGLXP glx_ctx = VA_DRIVER_CONTEXT_GLX(ctx);
VADriverVTableGLXP vtable = &glx_ctx->vtable;
int glx_major, glx_minor;
if (glx_ctx->is_initialized)
return VA_STATUS_SUCCESS;
if (ctx->vtable_glx && ctx->vtable_glx->vaCopySurfaceGLX) {
vtable->vaCreateSurfaceGLX = vaCreateSurfaceGLX_impl_driver;
vtable->vaDestroySurfaceGLX = vaDestroySurfaceGLX_impl_driver;
vtable->vaCopySurfaceGLX = vaCopySurfaceGLX_impl_driver;
}
else {
vtable->vaCreateSurfaceGLX = vaCreateSurfaceGLX_impl_libva;
vtable->vaDestroySurfaceGLX = vaDestroySurfaceGLX_impl_libva;
vtable->vaCopySurfaceGLX = vaCopySurfaceGLX_impl_libva;
if (!glXQueryVersion(ctx->native_dpy, &glx_major, &glx_minor))
return VA_STATUS_ERROR_UNIMPLEMENTED;
if (!check_tfp_extensions(ctx) || !load_tfp_extensions(ctx))
return VA_STATUS_ERROR_UNIMPLEMENTED;
if (!check_fbo_extensions(ctx) || !load_fbo_extensions(ctx))
return VA_STATUS_ERROR_UNIMPLEMENTED;
}
glx_ctx->is_initialized = 1;
return VA_STATUS_SUCCESS;
}