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xserver-multidpi/hw/xwayland/xwayland-glamor-eglstream.c

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/*
* Copyright © 2017 Red Hat Inc.
*
* 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:
* Lyude Paul <lyude@redhat.com>
*
*/
#include "xwayland.h"
#include "wayland-eglstream-client-protocol.h"
#include "wayland-eglstream-controller-client-protocol.h"
#define MESA_EGL_NO_X11_HEADERS
#define EGL_NO_X11
#include <glamor_egl.h>
#include <glamor.h>
#include <glamor_transform.h>
#include <glamor_transfer.h>
#include <xf86drm.h>
#include <epoxy/egl.h>
struct xwl_eglstream_pending_stream {
PixmapPtr pixmap;
WindowPtr window;
struct xwl_pixmap *xwl_pixmap;
struct wl_callback *cb;
Bool is_valid;
struct xorg_list link;
};
struct xwl_eglstream_private {
EGLDeviceEXT egl_device;
struct wl_eglstream_display *display;
struct wl_eglstream_controller *controller;
uint32_t display_caps;
EGLConfig config;
SetWindowPixmapProcPtr SetWindowPixmap;
struct xorg_list pending_streams;
Bool have_egl_damage;
GLint blit_prog;
GLuint blit_vao;
GLuint blit_vbo;
GLuint blit_is_rgba_pos;
};
struct xwl_pixmap {
struct wl_buffer *buffer;
struct xwl_screen *xwl_screen;
/* The stream and associated resources have their own lifetime seperate
* from the pixmap's */
int refcount;
EGLStreamKHR stream;
EGLSurface surface;
};
static DevPrivateKeyRec xwl_eglstream_private_key;
static DevPrivateKeyRec xwl_eglstream_window_private_key;
static inline struct xwl_eglstream_private *
xwl_eglstream_get(struct xwl_screen *xwl_screen)
{
return dixLookupPrivate(&xwl_screen->screen->devPrivates,
&xwl_eglstream_private_key);
}
static inline struct xwl_eglstream_pending_stream *
xwl_eglstream_window_get_pending(WindowPtr window)
{
return dixLookupPrivate(&window->devPrivates,
&xwl_eglstream_window_private_key);
}
static inline void
xwl_eglstream_window_set_pending(WindowPtr window,
struct xwl_eglstream_pending_stream *stream)
{
dixSetPrivate(&window->devPrivates,
&xwl_eglstream_window_private_key, stream);
}
static GLint
xwl_eglstream_compile_glsl_prog(GLenum type, const char *source)
{
GLint ok;
GLint prog;
prog = glCreateShader(type);
glShaderSource(prog, 1, (const GLchar **) &source, NULL);
glCompileShader(prog);
glGetShaderiv(prog, GL_COMPILE_STATUS, &ok);
if (!ok) {
GLchar *info;
GLint size;
glGetShaderiv(prog, GL_INFO_LOG_LENGTH, &size);
info = malloc(size);
if (info) {
glGetShaderInfoLog(prog, size, NULL, info);
ErrorF("Failed to compile %s: %s\n",
type == GL_FRAGMENT_SHADER ? "FS" : "VS", info);
ErrorF("Program source:\n%s", source);
free(info);
}
else
ErrorF("Failed to get shader compilation info.\n");
FatalError("GLSL compile failure\n");
}
return prog;
}
static GLuint
xwl_eglstream_build_glsl_prog(GLuint vs, GLuint fs)
{
GLint ok;
GLuint prog;
prog = glCreateProgram();
glAttachShader(prog, vs);
glAttachShader(prog, fs);
glLinkProgram(prog);
glGetProgramiv(prog, GL_LINK_STATUS, &ok);
if (!ok) {
GLchar *info;
GLint size;
glGetProgramiv(prog, GL_INFO_LOG_LENGTH, &size);
info = malloc(size);
glGetProgramInfoLog(prog, size, NULL, info);
ErrorF("Failed to link: %s\n", info);
FatalError("GLSL link failure\n");
}
return prog;
}
static void
xwl_eglstream_cleanup(struct xwl_screen *xwl_screen)
{
struct xwl_eglstream_private *xwl_eglstream =
xwl_eglstream_get(xwl_screen);
if (xwl_eglstream->display)
wl_eglstream_display_destroy(xwl_eglstream->display);
if (xwl_eglstream->controller)
wl_eglstream_controller_destroy(xwl_eglstream->controller);
if (xwl_eglstream->blit_prog) {
glDeleteProgram(xwl_eglstream->blit_prog);
glDeleteBuffers(1, &xwl_eglstream->blit_vbo);
}
free(xwl_eglstream);
}
static Bool
xwl_glamor_egl_supports_device_probing(void)
{
return epoxy_has_egl_extension(NULL, "EGL_EXT_device_base");
}
static void **
xwl_glamor_egl_get_devices(int *num_devices)
{
EGLDeviceEXT *devices, *tmp;
Bool ret;
int drm_dev_count = 0;
int i;
if (!xwl_glamor_egl_supports_device_probing())
return NULL;
/* Get the number of devices */
ret = eglQueryDevicesEXT(0, NULL, num_devices);
if (!ret || *num_devices < 1)
return NULL;
devices = calloc(*num_devices, sizeof(EGLDeviceEXT));
if (!devices)
return NULL;
ret = eglQueryDevicesEXT(*num_devices, devices, num_devices);
if (!ret)
goto error;
/* We're only ever going to care about devices that support
* EGL_EXT_device_drm, so filter out the ones that don't
*/
for (i = 0; i < *num_devices; i++) {
const char *extension_str =
eglQueryDeviceStringEXT(devices[i], EGL_EXTENSIONS);
if (!epoxy_extension_in_string(extension_str, "EGL_EXT_device_drm"))
continue;
devices[drm_dev_count++] = devices[i];
}
if (!drm_dev_count)
goto error;
*num_devices = drm_dev_count;
tmp = realloc(devices, sizeof(EGLDeviceEXT) * drm_dev_count);
if (!tmp)
goto error;
devices = tmp;
return devices;
error:
free(devices);
return NULL;
}
static Bool
xwl_glamor_egl_device_has_egl_extensions(void *device,
const char **ext_list, size_t size)
{
EGLDisplay egl_display;
int i;
Bool has_exts = TRUE;
egl_display = glamor_egl_get_display(EGL_PLATFORM_DEVICE_EXT, device);
if (!egl_display || !eglInitialize(egl_display, NULL, NULL))
return FALSE;
for (i = 0; i < size; i++) {
if (!epoxy_has_egl_extension(egl_display, ext_list[i])) {
has_exts = FALSE;
break;
}
}
eglTerminate(egl_display);
return has_exts;
}
static void
xwl_eglstream_unref_pixmap_stream(struct xwl_pixmap *xwl_pixmap)
{
struct xwl_screen *xwl_screen = xwl_pixmap->xwl_screen;
if (--xwl_pixmap->refcount >= 1)
return;
/* If we're using this stream in the current egl context, unbind it so the
* driver doesn't keep it around until the next eglMakeCurrent()
* don't have to keep it around until something else changes the surface
*/
xwl_glamor_egl_make_current(xwl_screen);
if (eglGetCurrentSurface(EGL_READ) == xwl_pixmap->surface ||
eglGetCurrentSurface(EGL_DRAW) == xwl_pixmap->surface) {
eglMakeCurrent(xwl_screen->egl_display,
EGL_NO_SURFACE, EGL_NO_SURFACE,
xwl_screen->egl_context);
}
if (xwl_pixmap->surface)
eglDestroySurface(xwl_screen->egl_display, xwl_pixmap->surface);
eglDestroyStreamKHR(xwl_screen->egl_display, xwl_pixmap->stream);
wl_buffer_destroy(xwl_pixmap->buffer);
free(xwl_pixmap);
}
static Bool
xwl_glamor_eglstream_destroy_pixmap(PixmapPtr pixmap)
{
struct xwl_pixmap *xwl_pixmap = xwl_pixmap_get(pixmap);
if (xwl_pixmap && pixmap->refcnt == 1)
xwl_eglstream_unref_pixmap_stream(xwl_pixmap);
return glamor_destroy_pixmap(pixmap);
}
static struct wl_buffer *
xwl_glamor_eglstream_get_wl_buffer_for_pixmap(PixmapPtr pixmap,
Bool *created)
{
/* XXX created? */
return xwl_pixmap_get(pixmap)->buffer;
}
static void
xwl_eglstream_set_window_pixmap(WindowPtr window, PixmapPtr pixmap)
{
struct xwl_screen *xwl_screen = xwl_screen_get(window->drawable.pScreen);
struct xwl_eglstream_private *xwl_eglstream =
xwl_eglstream_get(xwl_screen);
struct xwl_eglstream_pending_stream *pending;
pending = xwl_eglstream_window_get_pending(window);
if (pending) {
/* The pixmap for this window has changed before the compositor
* finished attaching the consumer for the window's pixmap's original
* eglstream. A producer can no longer be attached, so the stream's
* useless
*/
pending->is_valid = FALSE;
/* The compositor may still be using the stream, so we can't destroy
* it yet. We'll only have a guarantee that the stream is safe to
* destroy once we receive the pending wl_display_sync() for this
* stream
*/
pending->xwl_pixmap->refcount++;
}
xwl_screen->screen->SetWindowPixmap = xwl_eglstream->SetWindowPixmap;
(*xwl_screen->screen->SetWindowPixmap)(window, pixmap);
xwl_eglstream->SetWindowPixmap = xwl_screen->screen->SetWindowPixmap;
xwl_screen->screen->SetWindowPixmap = xwl_eglstream_set_window_pixmap;
}
/* Because we run asynchronously with our wayland compositor, it's possible
* that an X client event could cause us to begin creating a stream for a
* pixmap/window combo before the stream for the pixmap this window
* previously used has been fully initialized. An example:
*
* - Start processing X client events.
* - X window receives resize event, causing us to create a new pixmap and
* begin creating the corresponding eglstream. This pixmap is known as
* pixmap A.
* - X window receives another resize event, and again changes it's current
* pixmap causing us to create another corresponding eglstream for the same
* window. This pixmap is known as pixmap B.
* - Start handling events from the wayland compositor.
*
* Since both pixmap A and B will have scheduled wl_display_sync events to
* indicate when their respective streams are connected, we will receive each
* callback in the original order the pixmaps were created. This means the
* following would happen:
*
* - Receive pixmap A's stream callback, attach it's stream to the surface of
* the window that just orphaned it.
* - Receive pixmap B's stream callback, fall over and fail because the
* window's surface now incorrectly has pixmap A's stream attached to it.
*
* We work around this problem by keeping a queue of pending streams, and
* only allowing one queue entry to exist for each window. In the scenario
* listed above, this should happen:
*
* - Begin processing X events...
* - A window is resized, causing us to add an eglstream (known as eglstream
* A) waiting for it's consumer to finish attachment to be added to the
* queue.
* - Resize on same window happens. We invalidate the previously pending
* stream and add another one to the pending queue (known as eglstream B).
* - Begin processing Wayland events...
* - Receive invalidated callback from compositor for eglstream A, destroy
* stream.
* - Receive callback from compositor for eglstream B, create producer.
* - Success!
*/
static void
xwl_eglstream_consumer_ready_callback(void *data,
struct wl_callback *callback,
uint32_t time)
{
struct xwl_screen *xwl_screen = data;
struct xwl_eglstream_private *xwl_eglstream =
xwl_eglstream_get(xwl_screen);
struct xwl_pixmap *xwl_pixmap;
struct xwl_eglstream_pending_stream *pending;
Bool found = FALSE;
wl_callback_destroy(callback);
xorg_list_for_each_entry(pending, &xwl_eglstream->pending_streams, link) {
if (pending->cb == callback) {
found = TRUE;
break;
}
}
assert(found);
if (!pending->is_valid) {
xwl_eglstream_unref_pixmap_stream(pending->xwl_pixmap);
goto out;
}
xwl_glamor_egl_make_current(xwl_screen);
xwl_pixmap = pending->xwl_pixmap;
xwl_pixmap->surface = eglCreateStreamProducerSurfaceKHR(
xwl_screen->egl_display, xwl_eglstream->config,
xwl_pixmap->stream, (int[]) {
EGL_WIDTH, pending->pixmap->drawable.width,
EGL_HEIGHT, pending->pixmap->drawable.height,
EGL_NONE
});
DebugF("eglstream: win %d completes eglstream for pixmap %p, congrats!\n",
pending->window->drawable.id, pending->pixmap);
xwl_eglstream_window_set_pending(pending->window, NULL);
out:
xorg_list_del(&pending->link);
free(pending);
}
static const struct wl_callback_listener consumer_ready_listener = {
xwl_eglstream_consumer_ready_callback
};
static void
xwl_eglstream_queue_pending_stream(struct xwl_screen *xwl_screen,
WindowPtr window, PixmapPtr pixmap)
{
struct xwl_eglstream_private *xwl_eglstream =
xwl_eglstream_get(xwl_screen);
struct xwl_eglstream_pending_stream *pending_stream;
#ifdef DEBUG
if (!xwl_eglstream_window_get_pending(window))
DebugF("eglstream: win %d begins new eglstream for pixmap %p\n",
window->drawable.id, pixmap);
else
DebugF("eglstream: win %d interrupts and replaces pending eglstream for pixmap %p\n",
window->drawable.id, pixmap);
#endif
pending_stream = malloc(sizeof(*pending_stream));
pending_stream->window = window;
pending_stream->pixmap = pixmap;
pending_stream->xwl_pixmap = xwl_pixmap_get(pixmap);
pending_stream->is_valid = TRUE;
xorg_list_init(&pending_stream->link);
xorg_list_add(&pending_stream->link, &xwl_eglstream->pending_streams);
xwl_eglstream_window_set_pending(window, pending_stream);
pending_stream->cb = wl_display_sync(xwl_screen->display);
wl_callback_add_listener(pending_stream->cb, &consumer_ready_listener,
xwl_screen);
}
static void
xwl_eglstream_buffer_release_callback(void *data, struct wl_buffer *wl_buffer)
{
xwl_eglstream_unref_pixmap_stream(data);
}
static const struct wl_buffer_listener xwl_eglstream_buffer_release_listener = {
xwl_eglstream_buffer_release_callback
};
static void
xwl_eglstream_create_pending_stream(struct xwl_screen *xwl_screen,
WindowPtr window, PixmapPtr pixmap)
{
struct xwl_eglstream_private *xwl_eglstream =
xwl_eglstream_get(xwl_screen);
struct xwl_pixmap *xwl_pixmap;
struct xwl_window *xwl_window = xwl_window_from_window(window);
struct wl_array stream_attribs;
int stream_fd = -1;
xwl_pixmap = calloc(sizeof(*xwl_pixmap), 1);
if (!xwl_pixmap)
FatalError("Not enough memory to create pixmap\n");
xwl_pixmap_set_private(pixmap, xwl_pixmap);
xwl_glamor_egl_make_current(xwl_screen);
xwl_pixmap->xwl_screen = xwl_screen;
xwl_pixmap->refcount = 1;
xwl_pixmap->stream = eglCreateStreamKHR(xwl_screen->egl_display, NULL);
stream_fd = eglGetStreamFileDescriptorKHR(xwl_screen->egl_display,
xwl_pixmap->stream);
wl_array_init(&stream_attribs);
xwl_pixmap->buffer =
wl_eglstream_display_create_stream(xwl_eglstream->display,
pixmap->drawable.width,
pixmap->drawable.height,
stream_fd,
WL_EGLSTREAM_HANDLE_TYPE_FD,
&stream_attribs);
wl_buffer_add_listener(xwl_pixmap->buffer,
&xwl_eglstream_buffer_release_listener,
xwl_pixmap);
wl_eglstream_controller_attach_eglstream_consumer(
xwl_eglstream->controller, xwl_window->surface, xwl_pixmap->buffer);
xwl_eglstream_queue_pending_stream(xwl_screen, window, pixmap);
close(stream_fd);
}
static Bool
xwl_glamor_eglstream_allow_commits(struct xwl_window *xwl_window)
{
struct xwl_screen *xwl_screen = xwl_window->xwl_screen;
struct xwl_eglstream_pending_stream *pending =
xwl_eglstream_window_get_pending(xwl_window->window);
PixmapPtr pixmap =
(*xwl_screen->screen->GetWindowPixmap)(xwl_window->window);
struct xwl_pixmap *xwl_pixmap = xwl_pixmap_get(pixmap);
if (xwl_pixmap) {
if (pending) {
/* Wait for the compositor to finish connecting the consumer for
* this eglstream */
if (pending->is_valid)
return FALSE;
/* The pixmap for this window was changed before the compositor
* finished connecting the eglstream for the window's previous
* pixmap. Begin creating a new eglstream. */
} else {
return TRUE;
}
}
/* Glamor pixmap has no backing stream yet; begin making one and disallow
* commits until then
*/
xwl_eglstream_create_pending_stream(xwl_screen, xwl_window->window,
pixmap);
return FALSE;
}
static void
xwl_glamor_eglstream_post_damage(struct xwl_window *xwl_window,
PixmapPtr pixmap, RegionPtr region)
{
struct xwl_screen *xwl_screen = xwl_window->xwl_screen;
struct xwl_eglstream_private *xwl_eglstream =
xwl_eglstream_get(xwl_screen);
struct xwl_pixmap *xwl_pixmap = xwl_pixmap_get(pixmap);
BoxPtr box = RegionExtents(region);
EGLint egl_damage[] = {
box->x1, box->y1,
box->x2 - box->x1, box->y2 - box->y1
};
GLint saved_vao;
/* Unbind the framebuffer BEFORE binding the EGLSurface, otherwise we
* won't actually draw to it
*/
xwl_glamor_egl_make_current(xwl_screen);
glBindFramebuffer(GL_FRAMEBUFFER, 0);
if (eglGetCurrentSurface(EGL_READ) != xwl_pixmap->surface ||
eglGetCurrentSurface(EGL_DRAW) != xwl_pixmap->surface)
eglMakeCurrent(xwl_screen->egl_display,
xwl_pixmap->surface, xwl_pixmap->surface,
xwl_screen->egl_context);
/* Save current GL state */
glGetIntegerv(GL_VERTEX_ARRAY_BINDING, &saved_vao);
/* Setup our GL state */
glUseProgram(xwl_eglstream->blit_prog);
glViewport(0, 0, pixmap->drawable.width, pixmap->drawable.height);
glActiveTexture(GL_TEXTURE0);
glBindVertexArray(xwl_eglstream->blit_vao);
glBindTexture(GL_TEXTURE_2D, glamor_get_pixmap_texture(pixmap));
glUniform1i(xwl_eglstream->blit_is_rgba_pos,
pixmap->drawable.depth >= 32);
/* Blit rendered image into EGLStream surface */
glDrawBuffer(GL_BACK);
glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
if (xwl_eglstream->have_egl_damage)
eglSwapBuffersWithDamageKHR(xwl_screen->egl_display,
xwl_pixmap->surface, egl_damage, 1);
else
eglSwapBuffers(xwl_screen->egl_display, xwl_pixmap->surface);
/* Restore previous state */
glBindVertexArray(saved_vao);
glBindTexture(GL_TEXTURE_2D, 0);
/* After this we will hand off the eglstream's wl_buffer to the
* compositor, which will own it until it sends a release() event. */
xwl_pixmap->refcount++;
}
static void
xwl_eglstream_display_handle_caps(void *data,
struct wl_eglstream_display *disp,
int32_t caps)
{
xwl_eglstream_get(data)->display_caps = caps;
}
static void
xwl_eglstream_display_handle_swapinterval_override(void *data,
struct wl_eglstream_display *disp,
int32_t swapinterval,
struct wl_buffer *stream)
{
}
const struct wl_eglstream_display_listener eglstream_display_listener = {
.caps = xwl_eglstream_display_handle_caps,
.swapinterval_override = xwl_eglstream_display_handle_swapinterval_override,
};
static Bool
xwl_glamor_eglstream_init_wl_registry(struct xwl_screen *xwl_screen,
struct wl_registry *wl_registry,
uint32_t id, const char *name,
uint32_t version)
{
struct xwl_eglstream_private *xwl_eglstream =
xwl_eglstream_get(xwl_screen);
if (strcmp(name, "wl_eglstream_display") == 0) {
xwl_eglstream->display = wl_registry_bind(
wl_registry, id, &wl_eglstream_display_interface, version);
wl_eglstream_display_add_listener(xwl_eglstream->display,
&eglstream_display_listener,
xwl_screen);
return TRUE;
} else if (strcmp(name, "wl_eglstream_controller") == 0) {
xwl_eglstream->controller = wl_registry_bind(
wl_registry, id, &wl_eglstream_controller_interface, version);
return TRUE;
}
/* no match */
return FALSE;
}
static Bool
xwl_glamor_eglstream_has_wl_interfaces(struct xwl_screen *xwl_screen)
{
struct xwl_eglstream_private *xwl_eglstream =
xwl_eglstream_get(xwl_screen);
if (xwl_eglstream->display == NULL) {
ErrorF("glamor: 'wl_eglstream_display' not supported\n");
return FALSE;
}
if (xwl_eglstream->controller == NULL) {
ErrorF("glamor: 'wl_eglstream_controller' not supported\n");
return FALSE;
}
return TRUE;
}
static inline void
xwl_eglstream_init_shaders(struct xwl_screen *xwl_screen)
{
struct xwl_eglstream_private *xwl_eglstream =
xwl_eglstream_get(xwl_screen);
GLint fs, vs, attrib;
GLuint vbo;
const char *blit_vs_src =
"attribute vec2 texcoord;\n"
"attribute vec2 position;\n"
"varying vec2 t;\n"
"void main() {\n"
" t = texcoord;\n"
" gl_Position = vec4(position, 0, 1);\n"
"}";
const char *blit_fs_src =
"varying vec2 t;\n"
"uniform sampler2D s;\n"
"uniform bool is_rgba;\n"
"void main() {\n"
" if (is_rgba)\n"
" gl_FragColor = texture2D(s, t);\n"
" else\n"
" gl_FragColor = vec4(texture2D(s, t).rgb, 1.0);\n"
"}";
static const float position[] = {
/* position */
-1, -1,
1, -1,
1, 1,
-1, 1,
/* texcoord */
0, 1,
1, 1,
1, 0,
0, 0,
};
vs = xwl_eglstream_compile_glsl_prog(GL_VERTEX_SHADER, blit_vs_src);
fs = xwl_eglstream_compile_glsl_prog(GL_FRAGMENT_SHADER, blit_fs_src);
xwl_eglstream->blit_prog = xwl_eglstream_build_glsl_prog(vs, fs);
glDeleteShader(vs);
glDeleteShader(fs);
/* Create the blitter's vao */
glGenVertexArrays(1, &xwl_eglstream->blit_vao);
glBindVertexArray(xwl_eglstream->blit_vao);
/* Set the data for both position and texcoord in the vbo */
glGenBuffers(1, &vbo);
glBindBuffer(GL_ARRAY_BUFFER, vbo);
glBufferData(GL_ARRAY_BUFFER, sizeof(position), position, GL_STATIC_DRAW);
xwl_eglstream->blit_vbo = vbo;
/* Define each shader attribute's data location in our vbo */
attrib = glGetAttribLocation(xwl_eglstream->blit_prog, "position");
glVertexAttribPointer(attrib, 2, GL_FLOAT, TRUE, 0, NULL);
glEnableVertexAttribArray(attrib);
attrib = glGetAttribLocation(xwl_eglstream->blit_prog, "texcoord");
glVertexAttribPointer(attrib, 2, GL_FLOAT, TRUE, 0,
(void*)(sizeof(float) * 8));
glEnableVertexAttribArray(attrib);
/* Save the location of uniforms we'll set later */
xwl_eglstream->blit_is_rgba_pos =
glGetUniformLocation(xwl_eglstream->blit_prog, "is_rgba");
}
static Bool
xwl_glamor_eglstream_init_egl(struct xwl_screen *xwl_screen)
{
struct xwl_eglstream_private *xwl_eglstream =
xwl_eglstream_get(xwl_screen);
EGLConfig config;
const EGLint attrib_list[] = {
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_CONTEXT_PRIORITY_LEVEL_IMG, EGL_CONTEXT_PRIORITY_HIGH_IMG,
EGL_NONE
};
const EGLint config_attribs[] = {
EGL_SURFACE_TYPE, EGL_STREAM_BIT_KHR,
EGL_RENDERABLE_TYPE, EGL_OPENGL_BIT,
EGL_RED_SIZE, 8,
EGL_GREEN_SIZE, 8,
EGL_BLUE_SIZE, 8,
EGL_ALPHA_SIZE, 8,
EGL_NONE,
};
int n;
xwl_screen->egl_display = glamor_egl_get_display(
EGL_PLATFORM_DEVICE_EXT, xwl_eglstream->egl_device);
if (!xwl_screen->egl_display)
goto error;
if (!eglInitialize(xwl_screen->egl_display, NULL, NULL)) {
xwl_screen->egl_display = NULL;
goto error;
}
if (!epoxy_has_egl_extension(xwl_screen->egl_display,
"EGL_IMG_context_priority")) {
ErrorF("EGL_IMG_context_priority not available\n");
goto error;
}
eglChooseConfig(xwl_screen->egl_display, config_attribs, &config, 1, &n);
if (!n) {
ErrorF("No acceptable EGL configs found\n");
goto error;
}
xwl_eglstream->config = config;
#if 0
xwl_screen->formats =
XWL_FORMAT_RGB565 | XWL_FORMAT_XRGB8888 | XWL_FORMAT_ARGB8888;
#endif
eglBindAPI(EGL_OPENGL_API);
xwl_screen->egl_context = eglCreateContext(
xwl_screen->egl_display, config, EGL_NO_CONTEXT, attrib_list);
if (xwl_screen->egl_context == EGL_NO_CONTEXT) {
ErrorF("Failed to create main EGL context: 0x%x\n", eglGetError());
goto error;
}
if (!eglMakeCurrent(xwl_screen->egl_display,
EGL_NO_SURFACE, EGL_NO_SURFACE,
xwl_screen->egl_context)) {
ErrorF("Failed to make EGL context current\n");
goto error;
}
xwl_eglstream->have_egl_damage =
epoxy_has_egl_extension(xwl_screen->egl_display,
"EGL_KHR_swap_buffers_with_damage");
if (!xwl_eglstream->have_egl_damage)
ErrorF("Driver lacks EGL_KHR_swap_buffers_with_damage, performance "
"will be affected\n");
xwl_eglstream_init_shaders(xwl_screen);
return TRUE;
error:
xwl_eglstream_cleanup(xwl_screen);
return FALSE;
}
static Bool
xwl_glamor_eglstream_init_screen(struct xwl_screen *xwl_screen)
{
struct xwl_eglstream_private *xwl_eglstream =
xwl_eglstream_get(xwl_screen);
ScreenPtr screen = xwl_screen->screen;
/* We can just let glamor handle CreatePixmap */
screen->DestroyPixmap = xwl_glamor_eglstream_destroy_pixmap;
xwl_eglstream->SetWindowPixmap = screen->SetWindowPixmap;
screen->SetWindowPixmap = xwl_eglstream_set_window_pixmap;
if (!dixRegisterPrivateKey(&xwl_eglstream_window_private_key,
PRIVATE_WINDOW, 0))
return FALSE;
return TRUE;
}
static EGLDeviceEXT
xwl_eglstream_get_device(struct xwl_screen *xwl_screen)
{
void **devices = NULL;
const char *exts[] = {
"EGL_KHR_stream",
"EGL_KHR_stream_producer_eglsurface",
};
int num_devices, i;
EGLDeviceEXT device = EGL_NO_DEVICE_EXT;
/* No device specified by the user, so find one ourselves */
devices = xwl_glamor_egl_get_devices(&num_devices);
if (!devices)
goto out;
for (i = 0; i < num_devices; i++) {
if (xwl_glamor_egl_device_has_egl_extensions(devices[i], exts,
ARRAY_SIZE(exts))) {
device = devices[i];
break;
}
}
free(devices);
out:
if (!device)
ErrorF("glamor: No eglstream capable devices found\n");
return device;
}
void
xwl_glamor_init_eglstream(struct xwl_screen *xwl_screen)
{
struct xwl_eglstream_private *xwl_eglstream;
EGLDeviceEXT egl_device;
xwl_screen->eglstream_backend.is_available = FALSE;
egl_device = xwl_eglstream_get_device(xwl_screen);
if (egl_device == EGL_NO_DEVICE_EXT)
return;
if (!dixRegisterPrivateKey(&xwl_eglstream_private_key, PRIVATE_SCREEN, 0))
return;
xwl_eglstream = calloc(sizeof(*xwl_eglstream), 1);
if (!xwl_eglstream) {
ErrorF("Failed to allocate memory required to init EGLStream support\n");
return;
}
dixSetPrivate(&xwl_screen->screen->devPrivates,
&xwl_eglstream_private_key, xwl_eglstream);
xwl_eglstream->egl_device = egl_device;
xorg_list_init(&xwl_eglstream->pending_streams);
xwl_screen->eglstream_backend.init_egl = xwl_glamor_eglstream_init_egl;
xwl_screen->eglstream_backend.init_wl_registry = xwl_glamor_eglstream_init_wl_registry;
xwl_screen->eglstream_backend.has_wl_interfaces = xwl_glamor_eglstream_has_wl_interfaces;
xwl_screen->eglstream_backend.init_screen = xwl_glamor_eglstream_init_screen;
xwl_screen->eglstream_backend.get_wl_buffer_for_pixmap = xwl_glamor_eglstream_get_wl_buffer_for_pixmap;
xwl_screen->eglstream_backend.post_damage = xwl_glamor_eglstream_post_damage;
xwl_screen->eglstream_backend.allow_commits = xwl_glamor_eglstream_allow_commits;
xwl_screen->eglstream_backend.is_available = TRUE;
}
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