xserver-multidpi/glamor/glamor_egl.c

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/*
* Copyright © 2010 Intel Corporation.
*
* 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, sublicense, 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
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS 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.
*
* Authors:
* Zhigang Gong <zhigang.gong@linux.intel.com>
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#ifdef HAVE_DIX_CONFIG_H
#include <dix-config.h>
#endif
#define GLAMOR_FOR_XORG
#include "xorg-server.h"
#include <unistd.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <errno.h>
#include <xf86.h>
#include <xf86drm.h>
#define GL_GLEXT_PROTOTYPES
#define EGL_EGLEXT_PROTOTYPES
#define EGL_DISPLAY_NO_X_MESA
#ifdef GLAMOR_HAS_GBM
#include <gbm.h>
#endif
#if GLAMOR_GLES2
#include <GLES2/gl2.h>
#include <GLES2/gl2ext.h>
#else
#include <GL/gl.h>
#endif
#define MESA_EGL_NO_X11_HEADERS
#include <EGL/egl.h>
#include <EGL/eglext.h>
#include "glamor.h"
#include "glamor_gl_dispatch.h"
static const char glamor_name[] = "glamor";
static DevPrivateKeyRec glamor_egl_pixmap_private_key_index;
DevPrivateKey glamor_egl_pixmap_private_key = &glamor_egl_pixmap_private_key_index;
static void
glamor_identify(int flags)
{
xf86Msg(X_INFO, "%s: OpenGL accelerated X.org driver based.\n",
glamor_name);
}
struct glamor_egl_screen_private {
EGLDisplay display;
EGLContext context;
EGLint major, minor;
CreateScreenResourcesProcPtr CreateScreenResources;
CloseScreenProcPtr CloseScreen;
int fd;
EGLImageKHR front_image;
int cpp;
#ifdef GLAMOR_HAS_GBM
struct gbm_device *gbm;
#endif
int has_gem;
PFNEGLCREATEIMAGEKHRPROC egl_create_image_khr;
PFNEGLDESTROYIMAGEKHRPROC egl_destroy_image_khr;
PFNGLEGLIMAGETARGETTEXTURE2DOESPROC egl_image_target_texture2d_oes;
struct glamor_gl_dispatch *dispatch;
CloseScreenProcPtr saved_close_screen;
xf86FreeScreenProc *saved_free_screen;
};
int xf86GlamorEGLPrivateIndex = -1;
static struct glamor_egl_screen_private
*
glamor_egl_get_screen_private(ScrnInfoPtr scrn)
{
return (struct glamor_egl_screen_private *)
scrn->privates[xf86GlamorEGLPrivateIndex].ptr;
}
static EGLImageKHR
_glamor_egl_create_image(struct glamor_egl_screen_private *glamor_egl,
int width, int height, int stride, int name, int depth)
{
EGLImageKHR image;
EGLint attribs[] = {
EGL_WIDTH, 0,
EGL_HEIGHT, 0,
EGL_DRM_BUFFER_STRIDE_MESA, 0,
EGL_DRM_BUFFER_FORMAT_MESA,
EGL_DRM_BUFFER_FORMAT_ARGB32_MESA,
EGL_DRM_BUFFER_USE_MESA,
EGL_DRM_BUFFER_USE_SHARE_MESA |
EGL_DRM_BUFFER_USE_SCANOUT_MESA,
EGL_NONE
};
attribs[1] = width;
attribs[3] = height;
attribs[5] = stride;
if (depth != 32 && depth != 24)
return EGL_NO_IMAGE_KHR;
image = glamor_egl->egl_create_image_khr(glamor_egl->display,
glamor_egl->context,
EGL_DRM_BUFFER_MESA,
(void *) (uintptr_t)name, attribs);
if (image == EGL_NO_IMAGE_KHR)
return EGL_NO_IMAGE_KHR;
return image;
}
static int
glamor_get_flink_name(int fd, int handle, int *name)
{
struct drm_gem_flink flink;
flink.handle = handle;
if (ioctl(fd, DRM_IOCTL_GEM_FLINK, &flink) < 0)
return FALSE;
*name = flink.name;
return TRUE;
}
static Bool
glamor_create_texture_from_image(struct glamor_egl_screen_private
*glamor_egl,
EGLImageKHR image, GLuint * texture)
{
glamor_egl->dispatch->glGenTextures(1, texture);
glamor_egl->dispatch->glBindTexture(GL_TEXTURE_2D, *texture);
glamor_egl->dispatch->glTexParameteri(GL_TEXTURE_2D,
GL_TEXTURE_MIN_FILTER,
GL_NEAREST);
glamor_egl->dispatch->glTexParameteri(GL_TEXTURE_2D,
GL_TEXTURE_MAG_FILTER,
GL_NEAREST);
(glamor_egl->egl_image_target_texture2d_oes) (GL_TEXTURE_2D,
image);
glamor_egl->dispatch->glBindTexture(GL_TEXTURE_2D, 0);
return TRUE;
}
Bool
glamor_egl_create_textured_screen(ScreenPtr screen, int handle, int stride)
{
ScrnInfoPtr scrn = xf86Screens[screen->myNum];
struct glamor_egl_screen_private *glamor_egl;
PixmapPtr screen_pixmap;
glamor_egl = glamor_egl_get_screen_private(scrn);
screen_pixmap = screen->GetScreenPixmap(screen);
if (!glamor_egl_create_textured_pixmap(screen_pixmap, handle, stride)) {
xf86DrvMsg(scrn->scrnIndex, X_ERROR, "Failed to create textured screen.");
return FALSE;
}
glamor_egl->front_image = dixLookupPrivate(&screen_pixmap->devPrivates,
glamor_egl_pixmap_private_key);
glamor_set_screen_pixmap(screen_pixmap);
return TRUE;
}
Bool
glamor_egl_check_has_gem(int fd)
{
struct drm_gem_flink flink;
flink.handle = 0;
int err;
ioctl(fd, DRM_IOCTL_GEM_FLINK, &flink);
if (errno == ENOENT || err == EINVAL)
return TRUE;
return FALSE;
}
Bool
glamor_egl_create_textured_pixmap(PixmapPtr pixmap, int handle, int stride)
{
ScreenPtr screen = pixmap->drawable.pScreen;
ScrnInfoPtr scrn = xf86Screens[screen->myNum];
struct glamor_egl_screen_private *glamor_egl;
EGLImageKHR image;
GLuint texture;
int name;
glamor_egl = glamor_egl_get_screen_private(scrn);
if (glamor_egl->has_gem) {
if (!glamor_get_flink_name(glamor_egl->fd, handle, &name)) {
xf86DrvMsg(scrn->scrnIndex, X_ERROR,
"Couldn't flink pixmap handle\n");
glamor_set_pixmap_type(pixmap, GLAMOR_DRM_ONLY);
exit(1);
}
} else
name = handle;
image = _glamor_egl_create_image(glamor_egl,
pixmap->drawable.width,
pixmap->drawable.height,
((stride * 8 + 7) / pixmap->drawable.bitsPerPixel),
name,
pixmap->drawable.depth);
if (image == EGL_NO_IMAGE_KHR)
return FALSE;
glamor_create_texture_from_image(glamor_egl, image, &texture);
glamor_set_pixmap_type(pixmap, GLAMOR_TEXTURE_DRM);
glamor_set_pixmap_texture(pixmap, texture);
dixSetPrivate(&pixmap->devPrivates, glamor_egl_pixmap_private_key,
image);
return TRUE;
}
static void
_glamor_egl_destroy_pixmap_image(PixmapPtr pixmap)
{
ScrnInfoPtr scrn = xf86Screens[pixmap->drawable.pScreen->myNum];
EGLImageKHR image;
struct glamor_egl_screen_private *glamor_egl =
glamor_egl_get_screen_private(scrn);
image = dixLookupPrivate(&pixmap->devPrivates,
glamor_egl_pixmap_private_key);
if (image != EGL_NO_IMAGE_KHR && image != NULL) {
/* Before destroy an image which was attached to
* a texture. we must call glFlush to make sure the
* operation on that texture has been done.*/
glamor_block_handler(pixmap->drawable.pScreen);
glamor_egl->egl_destroy_image_khr(glamor_egl->display, image);
dixSetPrivate(&pixmap->devPrivates, glamor_egl_pixmap_private_key, NULL);
}
}
void
glamor_egl_destroy_textured_pixmap(PixmapPtr pixmap)
{
if (pixmap->refcnt == 1)
_glamor_egl_destroy_pixmap_image(pixmap);
glamor_destroy_textured_pixmap(pixmap);
}
static Bool
glamor_egl_close_screen(int idx, ScreenPtr screen)
{
ScrnInfoPtr scrn;
struct glamor_egl_screen_private *glamor_egl;
PixmapPtr screen_pixmap;
scrn = xf86Screens[screen->myNum];
glamor_egl = glamor_egl_get_screen_private(scrn);
screen_pixmap = screen->GetScreenPixmap(screen);
glamor_egl->egl_destroy_image_khr(glamor_egl->display, glamor_egl->front_image);
dixSetPrivate(&screen_pixmap->devPrivates, glamor_egl_pixmap_private_key, NULL);
glamor_egl->front_image = NULL;
screen->CloseScreen = glamor_egl->saved_close_screen;
return screen->CloseScreen(idx, screen);
}
static Bool
glamor_egl_has_extension(struct glamor_egl_screen_private *glamor_egl,
char *extension)
{
const char *egl_extensions;
char *pext;
int ext_len;
ext_len = strlen(extension);
egl_extensions =
(const char *) eglQueryString(glamor_egl->display,
EGL_EXTENSIONS);
pext = (char *) egl_extensions;
if (pext == NULL || extension == NULL)
return FALSE;
while ((pext = strstr(pext, extension)) != NULL) {
if (pext[ext_len] == ' ' || pext[ext_len] == '\0')
return TRUE;
pext += ext_len;
}
return FALSE;
}
void
glamor_egl_screen_init(ScreenPtr screen)
{
ScrnInfoPtr scrn = xf86Screens[screen->myNum];
struct glamor_egl_screen_private *glamor_egl =
glamor_egl_get_screen_private(scrn);
glamor_egl->saved_close_screen = screen->CloseScreen;
screen->CloseScreen = glamor_egl_close_screen;
}
static void
glamor_egl_free_screen(int scrnIndex, int flags)
{
ScrnInfoPtr scrn = xf86Screens[scrnIndex];
struct glamor_egl_screen_private *glamor_egl;
ErrorF("free egl screen resources\n");
glamor_egl = glamor_egl_get_screen_private(scrn);
if (glamor_egl != NULL) {
eglMakeCurrent(glamor_egl->display,
EGL_NO_SURFACE, EGL_NO_SURFACE,
EGL_NO_CONTEXT);
#ifdef GLAMOR_HAS_GBM
if (glamor_egl->gbm)
gbm_device_destroy(glamor_egl->gbm);
#endif
scrn->FreeScreen = glamor_egl->saved_free_screen;
free(glamor_egl);
scrn->FreeScreen(scrnIndex, flags);
}
}
Bool
glamor_egl_init(ScrnInfoPtr scrn, int fd)
{
struct glamor_egl_screen_private *glamor_egl;
const char *version;
EGLint config_attribs[] = {
#ifdef GLAMOR_GLES2
EGL_CONTEXT_CLIENT_VERSION, 2,
#endif
EGL_NONE
};
glamor_identify(0);
glamor_egl = calloc(sizeof(*glamor_egl), 1);
if (xf86GlamorEGLPrivateIndex == -1)
xf86GlamorEGLPrivateIndex =
xf86AllocateScrnInfoPrivateIndex();
scrn->privates[xf86GlamorEGLPrivateIndex].ptr = glamor_egl;
glamor_egl->fd = fd;
#ifdef GLAMOR_HAS_GBM
glamor_egl->gbm = gbm_create_device(glamor_egl->fd);
if (glamor_egl->gbm == NULL) {
ErrorF("couldn't get display device\n");
return FALSE;
}
glamor_egl->display = eglGetDisplay(glamor_egl->gbm);
#else
glamor_egl->display = eglGetDisplay((EGLNativeDisplayType)fd);
#endif
glamor_egl->has_gem = glamor_egl_check_has_gem(fd);
#ifndef GLAMOR_GLES2
eglBindAPI(EGL_OPENGL_API);
#else
eglBindAPI(EGL_OPENGL_ES_API);
#endif
if (!eglInitialize
(glamor_egl->display, &glamor_egl->major, &glamor_egl->minor))
{
xf86DrvMsg(scrn->scrnIndex, X_ERROR,
"eglInitialize() failed\n");
return FALSE;
}
version = eglQueryString(glamor_egl->display, EGL_VERSION);
xf86Msg(X_INFO, "%s: EGL version %s:\n", glamor_name, version);
#define GLAMOR_CHECK_EGL_EXTENSION(EXT) \
if (!glamor_egl_has_extension(glamor_egl, "EGL_" #EXT)) { \
ErrorF("EGL_" #EXT "required.\n"); \
return FALSE; \
}
GLAMOR_CHECK_EGL_EXTENSION(MESA_drm_image);
GLAMOR_CHECK_EGL_EXTENSION(KHR_gl_renderbuffer_image);
#ifdef GLAMOR_GLES2
GLAMOR_CHECK_EGL_EXTENSION(KHR_surfaceless_gles2);
#else
GLAMOR_CHECK_EGL_EXTENSION(KHR_surfaceless_opengl);
#endif
glamor_egl->egl_create_image_khr = (PFNEGLCREATEIMAGEKHRPROC)
eglGetProcAddress("eglCreateImageKHR");
glamor_egl->egl_destroy_image_khr = (PFNEGLDESTROYIMAGEKHRPROC)
eglGetProcAddress("eglDestroyImageKHR");
glamor_egl->egl_image_target_texture2d_oes =
(PFNGLEGLIMAGETARGETTEXTURE2DOESPROC)
eglGetProcAddress("glEGLImageTargetTexture2DOES");
if (!glamor_egl->egl_create_image_khr
|| !glamor_egl->egl_image_target_texture2d_oes) {
xf86DrvMsg(scrn->scrnIndex, X_ERROR,
"eglGetProcAddress() failed\n");
return FALSE;
}
glamor_egl->context = eglCreateContext(glamor_egl->display,
NULL, EGL_NO_CONTEXT,
config_attribs);
if (glamor_egl->context == EGL_NO_CONTEXT) {
xf86DrvMsg(scrn->scrnIndex, X_ERROR,
"Failed to create EGL context\n");
return FALSE;
}
if (!eglMakeCurrent(glamor_egl->display,
EGL_NO_SURFACE, EGL_NO_SURFACE,
glamor_egl->context)) {
xf86DrvMsg(scrn->scrnIndex, X_ERROR,
"Failed to make EGL context current\n");
return FALSE;
}
glamor_egl->saved_free_screen = scrn->FreeScreen;
scrn->FreeScreen = glamor_egl_free_screen;
return TRUE;
}
Bool
glamor_egl_init_textured_pixmap(ScreenPtr screen)
{
if (!dixRegisterPrivateKey
(glamor_egl_pixmap_private_key, PRIVATE_PIXMAP, 0)) {
LogMessage(X_WARNING,
"glamor%d: Failed to allocate egl pixmap private\n",
screen->myNum);
return FALSE;
}
return TRUE;
}
Bool
glamor_gl_dispatch_init(ScreenPtr screen,
struct glamor_gl_dispatch *dispatch,
int gl_version)
{
ScrnInfoPtr scrn = xf86Screens[screen->myNum];
struct glamor_egl_screen_private *glamor_egl =
glamor_egl_get_screen_private(scrn);
if (!glamor_gl_dispatch_init_impl
(dispatch, gl_version, (get_proc_address_t)eglGetProcAddress))
return FALSE;
glamor_egl->dispatch = dispatch;
return TRUE;
}