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xenocara/xserver/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>
*
*/
#include "dix-config.h"
#define GLAMOR_FOR_XORG
#include <unistd.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <errno.h>
#include <xf86.h>
#include <xf86Priv.h>
#include <xf86drm.h>
#define EGL_DISPLAY_NO_X_MESA
#include <gbm.h>
#include <drm_fourcc.h>
#include "glamor_egl.h"
#include "glamor.h"
#include "glamor_priv.h"
#include "dri3.h"
struct glamor_egl_screen_private {
EGLDisplay display;
EGLContext context;
char *device_path;
CreateScreenResourcesProcPtr CreateScreenResources;
CloseScreenProcPtr CloseScreen;
int fd;
struct gbm_device *gbm;
int dmabuf_capable;
CloseScreenProcPtr saved_close_screen;
DestroyPixmapProcPtr saved_destroy_pixmap;
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 void
glamor_egl_make_current(struct glamor_context *glamor_ctx)
{
/* There's only a single global dispatch table in Mesa. EGL, GLX,
* and AIGLX's direct dispatch table manipulation don't talk to
* each other. We need to set the context to NULL first to avoid
* EGL's no-op context change fast path when switching back to
* EGL.
*/
eglMakeCurrent(glamor_ctx->display, EGL_NO_SURFACE,
EGL_NO_SURFACE, EGL_NO_CONTEXT);
if (!eglMakeCurrent(glamor_ctx->display,
EGL_NO_SURFACE, EGL_NO_SURFACE,
glamor_ctx->ctx)) {
FatalError("Failed to make EGL context current\n");
}
}
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) {
/*
* Assume non-GEM kernels have names identical to the handle
*/
if (errno == ENODEV) {
*name = handle;
return TRUE;
} else {
return FALSE;
}
}
*name = flink.name;
return TRUE;
}
static Bool
glamor_create_texture_from_image(ScreenPtr screen,
EGLImageKHR image, GLuint * texture)
{
struct glamor_screen_private *glamor_priv =
glamor_get_screen_private(screen);
glamor_make_current(glamor_priv);
glGenTextures(1, texture);
glBindTexture(GL_TEXTURE_2D, *texture);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, image);
glBindTexture(GL_TEXTURE_2D, 0);
return TRUE;
}
struct gbm_device *
glamor_egl_get_gbm_device(ScreenPtr screen)
{
struct glamor_egl_screen_private *glamor_egl =
glamor_egl_get_screen_private(xf86ScreenToScrn(screen));
return glamor_egl->gbm;
}
Bool
glamor_egl_create_textured_screen(ScreenPtr screen, int handle, int stride)
{
ScrnInfoPtr scrn = xf86ScreenToScrn(screen);
PixmapPtr screen_pixmap;
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;
}
return TRUE;
}
static void
glamor_egl_set_pixmap_image(PixmapPtr pixmap, EGLImageKHR image,
Bool used_modifiers)
{
struct glamor_pixmap_private *pixmap_priv =
glamor_get_pixmap_private(pixmap);
EGLImageKHR old;
old = pixmap_priv->image;
if (old) {
ScreenPtr screen = pixmap->drawable.pScreen;
ScrnInfoPtr scrn = xf86ScreenToScrn(screen);
struct glamor_egl_screen_private *glamor_egl = glamor_egl_get_screen_private(scrn);
eglDestroyImageKHR(glamor_egl->display, old);
}
pixmap_priv->image = image;
pixmap_priv->used_modifiers = used_modifiers;
}
Bool
glamor_egl_create_textured_pixmap(PixmapPtr pixmap, int handle, int stride)
{
ScreenPtr screen = pixmap->drawable.pScreen;
ScrnInfoPtr scrn = xf86ScreenToScrn(screen);
struct glamor_egl_screen_private *glamor_egl =
glamor_egl_get_screen_private(scrn);
int ret, fd;
/* GBM doesn't have an import path from handles, so we make a
* dma-buf fd from it and then go through that.
*/
ret = drmPrimeHandleToFD(glamor_egl->fd, handle, O_CLOEXEC, &fd);
if (ret) {
xf86DrvMsg(scrn->scrnIndex, X_ERROR,
"Failed to make prime FD for handle: %d\n", errno);
return FALSE;
}
if (!glamor_back_pixmap_from_fd(pixmap, fd,
pixmap->drawable.width,
pixmap->drawable.height,
stride,
pixmap->drawable.depth,
pixmap->drawable.bitsPerPixel)) {
xf86DrvMsg(scrn->scrnIndex, X_ERROR,
"Failed to make import prime FD as pixmap: %d\n", errno);
close(fd);
return FALSE;
}
close(fd);
return TRUE;
}
Bool
glamor_egl_create_textured_pixmap_from_gbm_bo(PixmapPtr pixmap,
struct gbm_bo *bo,
Bool used_modifiers)
{
ScreenPtr screen = pixmap->drawable.pScreen;
ScrnInfoPtr scrn = xf86ScreenToScrn(screen);
struct glamor_screen_private *glamor_priv =
glamor_get_screen_private(screen);
struct glamor_egl_screen_private *glamor_egl;
EGLImageKHR image;
GLuint texture;
Bool ret = FALSE;
glamor_egl = glamor_egl_get_screen_private(scrn);
glamor_make_current(glamor_priv);
image = eglCreateImageKHR(glamor_egl->display,
glamor_egl->context,
EGL_NATIVE_PIXMAP_KHR, bo, NULL);
if (image == EGL_NO_IMAGE_KHR) {
glamor_set_pixmap_type(pixmap, GLAMOR_DRM_ONLY);
goto done;
}
glamor_create_texture_from_image(screen, image, &texture);
glamor_set_pixmap_type(pixmap, GLAMOR_TEXTURE_DRM);
glamor_set_pixmap_texture(pixmap, texture);
glamor_egl_set_pixmap_image(pixmap, image, used_modifiers);
ret = TRUE;
done:
return ret;
}
static void
glamor_get_name_from_bo(int gbm_fd, struct gbm_bo *bo, int *name)
{
union gbm_bo_handle handle;
handle = gbm_bo_get_handle(bo);
if (!glamor_get_flink_name(gbm_fd, handle.u32, name))
*name = -1;
}
static Bool
glamor_make_pixmap_exportable(PixmapPtr pixmap, Bool modifiers_ok)
{
ScreenPtr screen = pixmap->drawable.pScreen;
ScrnInfoPtr scrn = xf86ScreenToScrn(screen);
struct glamor_egl_screen_private *glamor_egl =
glamor_egl_get_screen_private(scrn);
struct glamor_pixmap_private *pixmap_priv =
glamor_get_pixmap_private(pixmap);
unsigned width = pixmap->drawable.width;
unsigned height = pixmap->drawable.height;
uint32_t format;
struct gbm_bo *bo = NULL;
Bool used_modifiers = FALSE;
PixmapPtr exported;
GCPtr scratch_gc;
if (pixmap_priv->image &&
(modifiers_ok || !pixmap_priv->used_modifiers))
return TRUE;
if (pixmap->drawable.bitsPerPixel != 32) {
xf86DrvMsg(scrn->scrnIndex, X_ERROR,
"Failed to make %dbpp pixmap exportable\n",
pixmap->drawable.bitsPerPixel);
return FALSE;
}
if (pixmap->drawable.depth == 30)
format = GBM_FORMAT_ARGB2101010;
else
format = GBM_FORMAT_ARGB8888;
#ifdef GBM_BO_WITH_MODIFIERS
if (modifiers_ok && glamor_egl->dmabuf_capable) {
uint32_t num_modifiers;
uint64_t *modifiers = NULL;
glamor_get_modifiers(screen, format, &num_modifiers, &modifiers);
bo = gbm_bo_create_with_modifiers(glamor_egl->gbm, width, height,
format, modifiers, num_modifiers);
if (bo)
used_modifiers = TRUE;
free(modifiers);
}
#endif
if (!bo)
{
bo = gbm_bo_create(glamor_egl->gbm, width, height, format,
#ifdef GLAMOR_HAS_GBM_LINEAR
(pixmap->usage_hint == CREATE_PIXMAP_USAGE_SHARED ?
GBM_BO_USE_LINEAR : 0) |
#endif
GBM_BO_USE_RENDERING | GBM_BO_USE_SCANOUT);
}
if (!bo) {
xf86DrvMsg(scrn->scrnIndex, X_ERROR,
"Failed to make %dx%dx%dbpp GBM bo\n",
width, height, pixmap->drawable.bitsPerPixel);
return FALSE;
}
exported = screen->CreatePixmap(screen, 0, 0, pixmap->drawable.depth, 0);
screen->ModifyPixmapHeader(exported, width, height, 0, 0,
gbm_bo_get_stride(bo), NULL);
if (!glamor_egl_create_textured_pixmap_from_gbm_bo(exported, bo,
used_modifiers)) {
xf86DrvMsg(scrn->scrnIndex, X_ERROR,
"Failed to make %dx%dx%dbpp pixmap from GBM bo\n",
width, height, pixmap->drawable.bitsPerPixel);
screen->DestroyPixmap(exported);
gbm_bo_destroy(bo);
return FALSE;
}
gbm_bo_destroy(bo);
scratch_gc = GetScratchGC(pixmap->drawable.depth, screen);
ValidateGC(&pixmap->drawable, scratch_gc);
scratch_gc->ops->CopyArea(&pixmap->drawable, &exported->drawable,
scratch_gc,
0, 0, width, height, 0, 0);
FreeScratchGC(scratch_gc);
/* Now, swap the tex/gbm/EGLImage/etc. of the exported pixmap into
* the original pixmap struct.
*/
glamor_egl_exchange_buffers(pixmap, exported);
screen->DestroyPixmap(exported);
return TRUE;
}
static struct gbm_bo *
glamor_gbm_bo_from_pixmap_internal(ScreenPtr screen, PixmapPtr pixmap)
{
struct glamor_egl_screen_private *glamor_egl =
glamor_egl_get_screen_private(xf86ScreenToScrn(screen));
struct glamor_pixmap_private *pixmap_priv =
glamor_get_pixmap_private(pixmap);
if (!pixmap_priv->image)
return NULL;
return gbm_bo_import(glamor_egl->gbm, GBM_BO_IMPORT_EGL_IMAGE,
pixmap_priv->image, 0);
}
struct gbm_bo *
glamor_gbm_bo_from_pixmap(ScreenPtr screen, PixmapPtr pixmap)
{
if (!glamor_make_pixmap_exportable(pixmap, TRUE))
return NULL;
return glamor_gbm_bo_from_pixmap_internal(screen, pixmap);
}
int
glamor_egl_fds_from_pixmap(ScreenPtr screen, PixmapPtr pixmap, int *fds,
uint32_t *strides, uint32_t *offsets,
uint64_t *modifier)
{
#ifdef GLAMOR_HAS_GBM
struct gbm_bo *bo;
int num_fds;
#ifdef GBM_BO_WITH_MODIFIERS
int i;
#endif
if (!glamor_make_pixmap_exportable(pixmap, TRUE))
return 0;
bo = glamor_gbm_bo_from_pixmap_internal(screen, pixmap);
if (!bo)
return 0;
#ifdef GBM_BO_WITH_MODIFIERS
num_fds = gbm_bo_get_plane_count(bo);
for (i = 0; i < num_fds; i++) {
fds[i] = gbm_bo_get_fd(bo);
strides[i] = gbm_bo_get_stride_for_plane(bo, i);
offsets[i] = gbm_bo_get_offset(bo, i);
}
*modifier = gbm_bo_get_modifier(bo);
#else
num_fds = 1;
fds[0] = gbm_bo_get_fd(bo);
strides[0] = gbm_bo_get_stride(bo);
offsets[0] = 0;
*modifier = DRM_FORMAT_MOD_INVALID;
#endif
gbm_bo_destroy(bo);
return num_fds;
#else
return 0;
#endif
}
_X_EXPORT int
glamor_egl_fd_from_pixmap(ScreenPtr screen, PixmapPtr pixmap,
CARD16 *stride, CARD32 *size)
{
#ifdef GLAMOR_HAS_GBM
struct gbm_bo *bo;
int fd;
if (!glamor_make_pixmap_exportable(pixmap, FALSE))
return -1;
bo = glamor_gbm_bo_from_pixmap_internal(screen, pixmap);
if (!bo)
return -1;
fd = gbm_bo_get_fd(bo);
*stride = gbm_bo_get_stride(bo);
*size = *stride * gbm_bo_get_height(bo);
gbm_bo_destroy(bo);
return fd;
#else
return -1;
#endif
}
int
glamor_egl_fd_name_from_pixmap(ScreenPtr screen,
PixmapPtr pixmap,
CARD16 *stride, CARD32 *size)
{
struct glamor_egl_screen_private *glamor_egl;
struct gbm_bo *bo;
int fd = -1;
glamor_egl = glamor_egl_get_screen_private(xf86ScreenToScrn(screen));
if (!glamor_make_pixmap_exportable(pixmap, FALSE))
goto failure;
bo = glamor_gbm_bo_from_pixmap_internal(screen, pixmap);
if (!bo)
goto failure;
pixmap->devKind = gbm_bo_get_stride(bo);
glamor_get_name_from_bo(glamor_egl->fd, bo, &fd);
*stride = pixmap->devKind;
*size = pixmap->devKind * gbm_bo_get_height(bo);
gbm_bo_destroy(bo);
failure:
return fd;
}
_X_EXPORT Bool
glamor_back_pixmap_from_fd(PixmapPtr pixmap,
int fd,
CARD16 width,
CARD16 height,
CARD16 stride, CARD8 depth, CARD8 bpp)
{
ScreenPtr screen = pixmap->drawable.pScreen;
ScrnInfoPtr scrn = xf86ScreenToScrn(screen);
struct glamor_egl_screen_private *glamor_egl;
struct gbm_bo *bo;
struct gbm_import_fd_data import_data = { 0 };
Bool ret;
glamor_egl = glamor_egl_get_screen_private(scrn);
if (bpp != 32 || !(depth == 24 || depth == 32 || depth == 30) || width == 0 || height == 0)
return FALSE;
import_data.fd = fd;
import_data.width = width;
import_data.height = height;
import_data.stride = stride;
if (depth == 30)
import_data.format = GBM_FORMAT_ARGB2101010;
else
import_data.format = GBM_FORMAT_ARGB8888;
bo = gbm_bo_import(glamor_egl->gbm, GBM_BO_IMPORT_FD, &import_data, 0);
if (!bo)
return FALSE;
screen->ModifyPixmapHeader(pixmap, width, height, 0, 0, stride, NULL);
ret = glamor_egl_create_textured_pixmap_from_gbm_bo(pixmap, bo, FALSE);
gbm_bo_destroy(bo);
return ret;
}
static uint32_t
gbm_format_for_depth(CARD8 depth)
{
switch (depth) {
case 16:
return GBM_FORMAT_RGB565;
case 24:
return GBM_FORMAT_XRGB8888;
case 30:
return GBM_FORMAT_ARGB2101010;
default:
ErrorF("unexpected depth: %d\n", depth);
case 32:
return GBM_FORMAT_ARGB8888;
}
}
_X_EXPORT PixmapPtr
glamor_pixmap_from_fds(ScreenPtr screen,
CARD8 num_fds, const int *fds,
CARD16 width, CARD16 height,
const CARD32 *strides, const CARD32 *offsets,
CARD8 depth, CARD8 bpp,
uint64_t modifier)
{
PixmapPtr pixmap;
struct glamor_egl_screen_private *glamor_egl;
Bool ret = FALSE;
int i;
glamor_egl = glamor_egl_get_screen_private(xf86ScreenToScrn(screen));
pixmap = screen->CreatePixmap(screen, 0, 0, depth, 0);
#ifdef GBM_BO_WITH_MODIFIERS
if (glamor_egl->dmabuf_capable && modifier != DRM_FORMAT_MOD_INVALID) {
struct gbm_import_fd_modifier_data import_data = { 0 };
struct gbm_bo *bo;
import_data.width = width;
import_data.height = height;
import_data.num_fds = num_fds;
import_data.modifier = modifier;
for (i = 0; i < num_fds; i++) {
import_data.fds[i] = fds[i];
import_data.strides[i] = strides[i];
import_data.offsets[i] = offsets[i];
}
import_data.format = gbm_format_for_depth(depth);
bo = gbm_bo_import(glamor_egl->gbm, GBM_BO_IMPORT_FD_MODIFIER, &import_data, 0);
if (bo) {
screen->ModifyPixmapHeader(pixmap, width, height, 0, 0, strides[0], NULL);
ret = glamor_egl_create_textured_pixmap_from_gbm_bo(pixmap, bo, TRUE);
gbm_bo_destroy(bo);
}
} else
#endif
{
if (num_fds == 1) {
ret = glamor_back_pixmap_from_fd(pixmap, fds[0], width, height,
strides[0], depth, bpp);
}
}
if (ret == FALSE) {
screen->DestroyPixmap(pixmap);
return NULL;
}
return pixmap;
}
_X_EXPORT PixmapPtr
glamor_pixmap_from_fd(ScreenPtr screen,
int fd,
CARD16 width,
CARD16 height,
CARD16 stride, CARD8 depth, CARD8 bpp)
{
PixmapPtr pixmap;
Bool ret;
pixmap = screen->CreatePixmap(screen, 0, 0, depth, 0);
ret = glamor_back_pixmap_from_fd(pixmap, fd, width, height,
stride, depth, bpp);
if (ret == FALSE) {
screen->DestroyPixmap(pixmap);
return NULL;
}
return pixmap;
}
_X_EXPORT Bool
glamor_get_formats(ScreenPtr screen,
CARD32 *num_formats, CARD32 **formats)
{
#ifdef GLAMOR_HAS_EGL_QUERY_DMABUF
struct glamor_egl_screen_private *glamor_egl;
EGLint num;
/* Explicitly zero the count as the caller may ignore the return value */
*num_formats = 0;
glamor_egl = glamor_egl_get_screen_private(xf86ScreenToScrn(screen));
if (!glamor_egl->dmabuf_capable)
return TRUE;
if (!eglQueryDmaBufFormatsEXT(glamor_egl->display, 0, NULL, &num))
return FALSE;
if (num == 0)
return TRUE;
*formats = calloc(num, sizeof(CARD32));
if (*formats == NULL)
return FALSE;
if (!eglQueryDmaBufFormatsEXT(glamor_egl->display, num,
(EGLint *) *formats, &num)) {
free(*formats);
return FALSE;
}
*num_formats = num;
return TRUE;
#else
*num_formats = 0;
return TRUE;
#endif
}
_X_EXPORT Bool
glamor_get_modifiers(ScreenPtr screen, uint32_t format,
uint32_t *num_modifiers, uint64_t **modifiers)
{
#ifdef GLAMOR_HAS_EGL_QUERY_DMABUF
struct glamor_egl_screen_private *glamor_egl;
EGLint num;
/* Explicitly zero the count as the caller may ignore the return value */
*num_modifiers = 0;
glamor_egl = glamor_egl_get_screen_private(xf86ScreenToScrn(screen));
if (!glamor_egl->dmabuf_capable)
return FALSE;
if (!eglQueryDmaBufModifiersEXT(glamor_egl->display, format, 0, NULL,
NULL, &num))
return FALSE;
if (num == 0)
return TRUE;
*modifiers = calloc(num, sizeof(uint64_t));
if (*modifiers == NULL)
return FALSE;
if (!eglQueryDmaBufModifiersEXT(glamor_egl->display, format, num,
(EGLuint64KHR *) *modifiers, NULL, &num)) {
free(*modifiers);
return FALSE;
}
*num_modifiers = num;
return TRUE;
#else
*num_modifiers = 0;
return TRUE;
#endif
}
_X_EXPORT const char *
glamor_egl_get_driver_name(ScreenPtr screen)
{
#ifdef GLAMOR_HAS_EGL_QUERY_DRIVER
struct glamor_egl_screen_private *glamor_egl;
glamor_egl = glamor_egl_get_screen_private(xf86ScreenToScrn(screen));
if (epoxy_has_egl_extension(glamor_egl->display, "EGL_MESA_query_driver"))
return eglGetDisplayDriverName(glamor_egl->display);
#endif
return NULL;
}
static Bool
glamor_egl_destroy_pixmap(PixmapPtr pixmap)
{
ScreenPtr screen = pixmap->drawable.pScreen;
ScrnInfoPtr scrn = xf86ScreenToScrn(screen);
struct glamor_egl_screen_private *glamor_egl =
glamor_egl_get_screen_private(scrn);
Bool ret;
if (pixmap->refcnt == 1) {
struct glamor_pixmap_private *pixmap_priv =
glamor_get_pixmap_private(pixmap);
if (pixmap_priv->image)
eglDestroyImageKHR(glamor_egl->display, pixmap_priv->image);
}
screen->DestroyPixmap = glamor_egl->saved_destroy_pixmap;
ret = screen->DestroyPixmap(pixmap);
glamor_egl->saved_destroy_pixmap = screen->DestroyPixmap;
screen->DestroyPixmap = glamor_egl_destroy_pixmap;
return ret;
}
_X_EXPORT void
glamor_egl_exchange_buffers(PixmapPtr front, PixmapPtr back)
{
EGLImageKHR temp_img;
Bool temp_mod;
struct glamor_pixmap_private *front_priv =
glamor_get_pixmap_private(front);
struct glamor_pixmap_private *back_priv =
glamor_get_pixmap_private(back);
glamor_pixmap_exchange_fbos(front, back);
temp_img = back_priv->image;
temp_mod = back_priv->used_modifiers;
back_priv->image = front_priv->image;
back_priv->used_modifiers = front_priv->used_modifiers;
front_priv->image = temp_img;
front_priv->used_modifiers = temp_mod;
glamor_set_pixmap_type(front, GLAMOR_TEXTURE_DRM);
glamor_set_pixmap_type(back, GLAMOR_TEXTURE_DRM);
}
static Bool
glamor_egl_close_screen(ScreenPtr screen)
{
ScrnInfoPtr scrn;
struct glamor_egl_screen_private *glamor_egl;
struct glamor_pixmap_private *pixmap_priv;
PixmapPtr screen_pixmap;
scrn = xf86ScreenToScrn(screen);
glamor_egl = glamor_egl_get_screen_private(scrn);
screen_pixmap = screen->GetScreenPixmap(screen);
pixmap_priv = glamor_get_pixmap_private(screen_pixmap);
eglDestroyImageKHR(glamor_egl->display, pixmap_priv->image);
pixmap_priv->image = NULL;
screen->CloseScreen = glamor_egl->saved_close_screen;
return screen->CloseScreen(screen);
}
#ifdef DRI3
static int
glamor_dri3_open_client(ClientPtr client,
ScreenPtr screen,
RRProviderPtr provider,
int *fdp)
{
ScrnInfoPtr scrn = xf86ScreenToScrn(screen);
struct glamor_egl_screen_private *glamor_egl =
glamor_egl_get_screen_private(scrn);
int fd;
drm_magic_t magic;
#ifndef __OpenBSD__
fd = open(glamor_egl->device_path, O_RDWR|O_CLOEXEC);
#else
fd = priv_open_device(glamor_egl->device_path);
#endif
if (fd < 0)
return BadAlloc;
/* Before FD passing in the X protocol with DRI3 (and increased
* security of rendering with per-process address spaces on the
* GPU), the kernel had to come up with a way to have the server
* decide which clients got to access the GPU, which was done by
* each client getting a unique (magic) number from the kernel,
* passing it to the server, and the server then telling the
* kernel which clients were authenticated for using the device.
*
* Now that we have FD passing, the server can just set up the
* authentication on its own and hand the prepared FD off to the
* client.
*/
if (drmGetMagic(fd, &magic) < 0) {
if (errno == EACCES) {
/* Assume that we're on a render node, and the fd is
* already as authenticated as it should be.
*/
*fdp = fd;
return Success;
} else {
close(fd);
return BadMatch;
}
}
if (drmAuthMagic(glamor_egl->fd, magic) < 0) {
close(fd);
return BadMatch;
}
*fdp = fd;
return Success;
}
static const dri3_screen_info_rec glamor_dri3_info = {
.version = 2,
.open_client = glamor_dri3_open_client,
.pixmap_from_fds = glamor_pixmap_from_fds,
.fd_from_pixmap = glamor_egl_fd_from_pixmap,
.fds_from_pixmap = glamor_egl_fds_from_pixmap,
.get_formats = glamor_get_formats,
.get_modifiers = glamor_get_modifiers,
.get_drawable_modifiers = glamor_get_drawable_modifiers,
};
#endif /* DRI3 */
void
glamor_egl_screen_init(ScreenPtr screen, struct glamor_context *glamor_ctx)
{
ScrnInfoPtr scrn = xf86ScreenToScrn(screen);
struct glamor_egl_screen_private *glamor_egl =
glamor_egl_get_screen_private(scrn);
#ifdef DRI3
glamor_screen_private *glamor_priv = glamor_get_screen_private(screen);
#endif
glamor_egl->saved_close_screen = screen->CloseScreen;
screen->CloseScreen = glamor_egl_close_screen;
glamor_egl->saved_destroy_pixmap = screen->DestroyPixmap;
screen->DestroyPixmap = glamor_egl_destroy_pixmap;
glamor_ctx->ctx = glamor_egl->context;
glamor_ctx->display = glamor_egl->display;
glamor_ctx->make_current = glamor_egl_make_current;
#ifdef DRI3
/* Tell the core that we have the interfaces for import/export
* of pixmaps.
*/
glamor_enable_dri3(screen);
/* If the driver wants to do its own auth dance (e.g. Xwayland
* on pre-3.15 kernels that don't have render nodes and thus
* has the wayland compositor as a master), then it needs us
* to stay out of the way and let it init DRI3 on its own.
*/
if (!(glamor_priv->flags & GLAMOR_NO_DRI3)) {
/* To do DRI3 device FD generation, we need to open a new fd
* to the same device we were handed in originally.
*/
glamor_egl->device_path = drmGetDeviceNameFromFd2(glamor_egl->fd);
if (!dri3_screen_init(screen, &glamor_dri3_info)) {
xf86DrvMsg(scrn->scrnIndex, X_ERROR,
"Failed to initialize DRI3.\n");
}
}
#endif
}
static void glamor_egl_cleanup(struct glamor_egl_screen_private *glamor_egl)
{
if (glamor_egl->display != EGL_NO_DISPLAY) {
eglMakeCurrent(glamor_egl->display,
EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
/*
* Force the next glamor_make_current call to update the context
* (on hot unplug another GPU may still be using glamor)
*/
lastGLContext = NULL;
eglTerminate(glamor_egl->display);
}
if (glamor_egl->gbm)
gbm_device_destroy(glamor_egl->gbm);
free(glamor_egl->device_path);
free(glamor_egl);
}
static void
glamor_egl_free_screen(ScrnInfoPtr scrn)
{
struct glamor_egl_screen_private *glamor_egl;
glamor_egl = glamor_egl_get_screen_private(scrn);
if (glamor_egl != NULL) {
scrn->FreeScreen = glamor_egl->saved_free_screen;
glamor_egl_cleanup(glamor_egl);
scrn->FreeScreen(scrn);
}
}
Bool
glamor_egl_init(ScrnInfoPtr scrn, int fd)
{
struct glamor_egl_screen_private *glamor_egl;
const GLubyte *renderer;
glamor_egl = calloc(sizeof(*glamor_egl), 1);
if (glamor_egl == NULL)
return FALSE;
if (xf86GlamorEGLPrivateIndex == -1)
xf86GlamorEGLPrivateIndex = xf86AllocateScrnInfoPrivateIndex();
scrn->privates[xf86GlamorEGLPrivateIndex].ptr = glamor_egl;
glamor_egl->fd = fd;
glamor_egl->gbm = gbm_create_device(glamor_egl->fd);
if (glamor_egl->gbm == NULL) {
ErrorF("couldn't get display device\n");
goto error;
}
glamor_egl->display = glamor_egl_get_display(EGL_PLATFORM_GBM_MESA,
glamor_egl->gbm);
if (!glamor_egl->display) {
xf86DrvMsg(scrn->scrnIndex, X_ERROR, "eglGetDisplay() failed\n");
goto error;
}
if (!eglInitialize(glamor_egl->display, NULL, NULL)) {
xf86DrvMsg(scrn->scrnIndex, X_ERROR, "eglInitialize() failed\n");
glamor_egl->display = EGL_NO_DISPLAY;
goto error;
}
#define GLAMOR_CHECK_EGL_EXTENSION(EXT) \
if (!epoxy_has_egl_extension(glamor_egl->display, "EGL_" #EXT)) { \
ErrorF("EGL_" #EXT " required.\n"); \
goto error; \
}
#define GLAMOR_CHECK_EGL_EXTENSIONS(EXT1, EXT2) \
if (!epoxy_has_egl_extension(glamor_egl->display, "EGL_" #EXT1) && \
!epoxy_has_egl_extension(glamor_egl->display, "EGL_" #EXT2)) { \
ErrorF("EGL_" #EXT1 " or EGL_" #EXT2 " required.\n"); \
goto error; \
}
GLAMOR_CHECK_EGL_EXTENSION(KHR_surfaceless_context);
if (eglBindAPI(EGL_OPENGL_API)) {
static const EGLint config_attribs_core[] = {
EGL_CONTEXT_OPENGL_PROFILE_MASK_KHR,
EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR,
EGL_CONTEXT_MAJOR_VERSION_KHR,
GLAMOR_GL_CORE_VER_MAJOR,
EGL_CONTEXT_MINOR_VERSION_KHR,
GLAMOR_GL_CORE_VER_MINOR,
EGL_NONE
};
static const EGLint config_attribs[] = {
EGL_NONE
};
glamor_egl->context = eglCreateContext(glamor_egl->display,
NULL, EGL_NO_CONTEXT,
config_attribs_core);
if (glamor_egl->context == EGL_NO_CONTEXT)
glamor_egl->context = eglCreateContext(glamor_egl->display,
NULL, EGL_NO_CONTEXT,
config_attribs);
}
if (glamor_egl->context == EGL_NO_CONTEXT) {
static const EGLint config_attribs[] = {
EGL_CONTEXT_CLIENT_VERSION, 2,
EGL_NONE
};
if (!eglBindAPI(EGL_OPENGL_ES_API)) {
xf86DrvMsg(scrn->scrnIndex, X_ERROR,
"glamor: Failed to bind either GL or GLES APIs.\n");
goto error;
}
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,
"glamor: Failed to create GL or GLES2 contexts\n");
goto error;
}
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");
goto error;
}
renderer = glGetString(GL_RENDERER);
if (!renderer) {
xf86DrvMsg(scrn->scrnIndex, X_ERROR,
"glGetString() returned NULL, your GL is broken\n");
goto error;
}
if (strstr((const char *)renderer, "llvmpipe")) {
xf86DrvMsg(scrn->scrnIndex, X_INFO,
"Refusing to try glamor on llvmpipe\n");
goto error;
}
/*
* Force the next glamor_make_current call to set the right context
* (in case of multiple GPUs using glamor)
*/
lastGLContext = NULL;
if (!epoxy_has_gl_extension("GL_OES_EGL_image")) {
xf86DrvMsg(scrn->scrnIndex, X_ERROR,
"glamor acceleration requires GL_OES_EGL_image\n");
goto error;
}
xf86DrvMsg(scrn->scrnIndex, X_INFO, "glamor X acceleration enabled on %s\n",
renderer);
#ifdef GBM_BO_WITH_MODIFIERS
if (epoxy_has_egl_extension(glamor_egl->display,
"EGL_EXT_image_dma_buf_import") &&
epoxy_has_egl_extension(glamor_egl->display,
"EGL_EXT_image_dma_buf_import_modifiers")) {
if (xf86Info.debug != NULL)
glamor_egl->dmabuf_capable = !!strstr(xf86Info.debug,
"dmabuf_capable");
else
glamor_egl->dmabuf_capable = FALSE;
}
#endif
glamor_egl->saved_free_screen = scrn->FreeScreen;
scrn->FreeScreen = glamor_egl_free_screen;
return TRUE;
error:
glamor_egl_cleanup(glamor_egl);
return FALSE;
}
/** Stub to retain compatibility with pre-server-1.16 ABI. */
Bool
glamor_egl_init_textured_pixmap(ScreenPtr screen)
{
return TRUE;
}
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