[Spice-devel] [PATCH spice-gtk] gtk: add spice-widget GL scanout support
Marc-André Lureau
marcandre.lureau at gmail.com
Mon Feb 15 13:40:31 UTC 2016
From: Marc-André Lureau <mlureau at redhat.com>
Hook to spice-glib events to show the GL scanout.
The opengl context is created with egl, and is currently
x11-only (supporting wayland with bare-egl doesn't seem trivial).
Using GtkGLArea is left for a future series, since SpiceDisplay widget
is a GtkDrawingArea and can't be replaced without breaking
ABI. Furthermore, GtkGLArea won't work on non-egl contexts, so this
approach is necessary on gtk+ < 3.16 or X11 (because gdk/x11 uses glx).
Signed-off-by: Marc-André Lureau <marcandre.lureau at redhat.com>
---
v3->v4:
- update after Victor reivew
- uppercase true/false
- use macros for buffer size
- get rid of useless variable
- reset attributes on unrealize
- comment some texture coordinates math
- explicit != NULL check
- check earlier if EGL_NO_SURFACE in draw
src/Makefile.am | 9 +
src/spice-widget-egl.c | 605 ++++++++++++++++++++++++++++++++++++++++++++++++
src/spice-widget-priv.h | 30 +++
src/spice-widget.c | 151 ++++++++++--
4 files changed, 775 insertions(+), 20 deletions(-)
create mode 100644 src/spice-widget-egl.c
diff --git a/src/Makefile.am b/src/Makefile.am
index 37b89fe..68884e6 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -122,6 +122,7 @@ SPICE_GTK_LIBADD_COMMON = \
libspice-client-glib-2.0.la \
$(GTK_LIBS) \
$(CAIRO_LIBS) \
+ $(EPOXY_LIBS) \
$(LIBM) \
$(NULL)
@@ -160,17 +161,25 @@ SPICE_GTK_SOURCES_COMMON += \
endif
if WITH_GTK
+if WITH_EPOXY
+SPICE_GTK_SOURCES_COMMON += \
+ spice-widget-egl.c \
+ $(NULL)
+endif
+
if HAVE_GTK_2
libspice_client_gtk_2_0_la_DEPEDENCIES = $(GTK_SYMBOLS_FILE)
libspice_client_gtk_2_0_la_LDFLAGS = $(SPICE_GTK_LDFLAGS_COMMON)
libspice_client_gtk_2_0_la_LIBADD = $(SPICE_GTK_LIBADD_COMMON)
libspice_client_gtk_2_0_la_SOURCES = $(SPICE_GTK_SOURCES_COMMON)
+libspice_client_gtk_2_0_la_CFLAGS = $(EPOXY_CFLAGS)
nodist_libspice_client_gtk_2_0_la_SOURCES = $(nodist_SPICE_GTK_SOURCES_COMMON)
else
libspice_client_gtk_3_0_la_DEPEDENCIES = $(GTK_SYMBOLS_FILE)
libspice_client_gtk_3_0_la_LDFLAGS = $(SPICE_GTK_LDFLAGS_COMMON)
libspice_client_gtk_3_0_la_LIBADD = $(SPICE_GTK_LIBADD_COMMON)
libspice_client_gtk_3_0_la_SOURCES = $(SPICE_GTK_SOURCES_COMMON)
+libspice_client_gtk_3_0_la_CFLAGS = $(EPOXY_CFLAGS)
nodist_libspice_client_gtk_3_0_la_SOURCES = $(nodist_SPICE_GTK_SOURCES_COMMON)
endif
diff --git a/src/spice-widget-egl.c b/src/spice-widget-egl.c
new file mode 100644
index 0000000..d0f9381
--- /dev/null
+++ b/src/spice-widget-egl.c
@@ -0,0 +1,605 @@
+/* -*- Mode: C; c-basic-offset: 4; indent-tabs-mode: nil -*- */
+/*
+ Copyright (C) 2014-2015 Red Hat, Inc.
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with this library; if not, see <http://www.gnu.org/licenses/>.
+*/
+#include "config.h"
+
+#include <math.h>
+
+#define EGL_EGLEXT_PROTOTYPES
+#define GL_GLEXT_PROTOTYPES
+
+#include "spice-widget.h"
+#include "spice-widget-priv.h"
+#include "spice-gtk-session-priv.h"
+#include <libdrm/drm_fourcc.h>
+
+#include <gdk/gdkx.h>
+
+#define VERTS_ARRAY_SIZE (sizeof(GLfloat) * 4 * 4)
+#define TEX_ARRAY_SIZE (sizeof(GLfloat) * 4 * 2)
+
+static const char *spice_egl_vertex_src = \
+" \
+ #version 130\n \
+ \
+ in vec4 position; \
+ in vec2 texcoords; \
+ out vec2 tcoords; \
+ uniform mat4 mproj; \
+ \
+ void main() \
+ { \
+ tcoords = texcoords; \
+ gl_Position = mproj * position; \
+ } \
+";
+
+static const char *spice_egl_fragment_src = \
+" \
+ #version 130\n \
+ \
+ in vec2 tcoords; \
+ out vec4 fragmentColor; \
+ uniform sampler2D samp; \
+ \
+ void main() \
+ { \
+ fragmentColor = texture2D(samp, tcoords); \
+ } \
+";
+
+static void apply_ortho(guint mproj, float left, float right,
+ float bottom, float top, float near, float far)
+
+{
+ float a = 2.0f / (right - left);
+ float b = 2.0f / (top - bottom);
+ float c = -2.0f / (far - near);
+
+ float tx = - (right + left) / (right - left);
+ float ty = - (top + bottom) / (top - bottom);
+ float tz = - (far + near) / (far - near);
+
+ float ortho[16] = {
+ a, 0, 0, 0,
+ 0, b, 0, 0,
+ 0, 0, c, 0,
+ tx, ty, tz, 1
+ };
+
+ glUniformMatrix4fv(mproj, 1, GL_FALSE, &ortho[0]);
+}
+
+static gboolean spice_egl_init_shaders(SpiceDisplay *display, GError **err)
+{
+ SpiceDisplayPrivate *d = SPICE_DISPLAY_GET_PRIVATE(display);
+ GLuint fs = 0, vs = 0, buf;
+ GLint status, tex_loc, prog;
+ gboolean success = FALSE;
+ gchar log[1000] = { 0, };
+ GLsizei len;
+
+ glGetIntegerv(GL_CURRENT_PROGRAM, &prog);
+
+ fs = glCreateShader(GL_FRAGMENT_SHADER);
+ glShaderSource(fs, 1, (const char **)&spice_egl_fragment_src, NULL);
+ glCompileShader(fs);
+ glGetShaderiv(fs, GL_COMPILE_STATUS, &status);
+ if (!status) {
+ glGetShaderInfoLog(fs, sizeof(log), &len, log);
+ g_set_error(err, SPICE_CLIENT_ERROR, SPICE_CLIENT_ERROR_FAILED,
+ "failed to compile fragment shader: %s", log);
+ goto end;
+ }
+
+ vs = glCreateShader(GL_VERTEX_SHADER);
+ glShaderSource(vs, 1, (const char **)&spice_egl_vertex_src, NULL);
+ glCompileShader(vs);
+ glGetShaderiv(vs, GL_COMPILE_STATUS, &status);
+ if (!status) {
+ glGetShaderInfoLog(vs, sizeof(log), &len, log);
+ g_set_error(err, SPICE_CLIENT_ERROR, SPICE_CLIENT_ERROR_FAILED,
+ "failed to compile vertex shader: %s", log);
+ goto end;
+ }
+
+ d->egl.prog = glCreateProgram();
+ glAttachShader(d->egl.prog, fs);
+ glAttachShader(d->egl.prog, vs);
+ glLinkProgram(d->egl.prog);
+ glGetProgramiv(d->egl.prog, GL_LINK_STATUS, &status);
+ if (!status) {
+ glGetProgramInfoLog(d->egl.prog, 1000, &len, log);
+ g_set_error(err, SPICE_CLIENT_ERROR, SPICE_CLIENT_ERROR_FAILED,
+ "error linking shaders: %s", log);
+ goto end;
+ }
+
+ glUseProgram(d->egl.prog);
+ glDetachShader(d->egl.prog, fs);
+ glDetachShader(d->egl.prog, vs);
+
+ d->egl.attr_pos = glGetAttribLocation(d->egl.prog, "position");
+ g_assert(d->egl.attr_pos != -1);
+ d->egl.attr_tex = glGetAttribLocation(d->egl.prog, "texcoords");
+ g_assert(d->egl.attr_tex != -1);
+ tex_loc = glGetUniformLocation(d->egl.prog, "samp");
+ g_assert(tex_loc != -1);
+ d->egl.mproj = glGetUniformLocation(d->egl.prog, "mproj");
+ g_assert(d->egl.mproj != -1);
+
+ glUniform1i(tex_loc, 0);
+
+ /* we only use one VAO, so we always keep it bound */
+ glGenVertexArrays(1, &buf);
+ glBindVertexArray(buf);
+
+ glGenBuffers(1, &buf);
+ glBindBuffer(GL_ARRAY_BUFFER, buf);
+ glBufferData(GL_ARRAY_BUFFER,
+ VERTS_ARRAY_SIZE + TEX_ARRAY_SIZE,
+ NULL,
+ GL_STATIC_DRAW);
+ d->egl.vbuf_id = buf;
+
+ glGenTextures(1, &d->egl.tex_id);
+ glGenTextures(1, &d->egl.tex_pointer_id);
+
+ success = TRUE;
+
+end:
+ if (fs) {
+ glDeleteShader(fs);
+ }
+ if (vs) {
+ glDeleteShader(vs);
+ }
+
+ glUseProgram(prog);
+ return success;
+}
+
+G_GNUC_INTERNAL
+gboolean spice_egl_init(SpiceDisplay *display, GError **err)
+{
+ SpiceDisplayPrivate *d = SPICE_DISPLAY_GET_PRIVATE(display);
+ static const EGLint conf_att[] = {
+ EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
+ EGL_RENDERABLE_TYPE, EGL_OPENGL_BIT,
+ EGL_RED_SIZE, 8,
+ EGL_GREEN_SIZE, 8,
+ EGL_BLUE_SIZE, 8,
+ EGL_ALPHA_SIZE, 0,
+ EGL_NONE,
+ };
+ static const EGLint ctx_att[] = {
+#ifdef EGL_CONTEXT_MAJOR_VERSION
+ EGL_CONTEXT_MAJOR_VERSION, 3,
+#else
+ EGL_CONTEXT_CLIENT_VERSION, 3,
+#endif
+ EGL_NONE
+ };
+ EGLBoolean b;
+ EGLint major, minor, n;
+ EGLNativeDisplayType dpy = 0;
+ GdkDisplay *gdk_dpy = gdk_display_get_default();
+
+#ifdef GDK_WINDOWING_X11
+ if (GDK_IS_X11_DISPLAY(gdk_dpy)) {
+ dpy = (EGLNativeDisplayType)gdk_x11_display_get_xdisplay(gdk_dpy);
+ }
+#endif
+
+ d->egl.display = eglGetDisplay(dpy);
+ if (d->egl.display == EGL_NO_DISPLAY) {
+ g_set_error_literal(err, SPICE_CLIENT_ERROR, SPICE_CLIENT_ERROR_FAILED,
+ "failed to get EGL display");
+ return FALSE;
+ }
+
+ if (!eglInitialize(d->egl.display, &major, &minor)) {
+ g_set_error_literal(err, SPICE_CLIENT_ERROR, SPICE_CLIENT_ERROR_FAILED,
+ "failed to init EGL display");
+ return FALSE;
+ }
+
+ SPICE_DEBUG("EGL major/minor: %d.%d\n", major, minor);
+ SPICE_DEBUG("EGL version: %s\n",
+ eglQueryString(d->egl.display, EGL_VERSION));
+ SPICE_DEBUG("EGL vendor: %s\n",
+ eglQueryString(d->egl.display, EGL_VENDOR));
+ SPICE_DEBUG("EGL extensions: %s\n",
+ eglQueryString(d->egl.display, EGL_EXTENSIONS));
+
+ b = eglBindAPI(EGL_OPENGL_API);
+ if (!b) {
+ g_set_error_literal(err, SPICE_CLIENT_ERROR, SPICE_CLIENT_ERROR_FAILED,
+ "cannot bind OpenGL API");
+ return FALSE;
+ }
+
+ b = eglChooseConfig(d->egl.display, conf_att, &d->egl.conf,
+ 1, &n);
+
+ if (!b || n != 1) {
+ g_set_error_literal(err, SPICE_CLIENT_ERROR, SPICE_CLIENT_ERROR_FAILED,
+ "cannot find suitable EGL config");
+ return FALSE;
+ }
+
+ d->egl.ctx = eglCreateContext(d->egl.display,
+ d->egl.conf,
+ EGL_NO_CONTEXT,
+ ctx_att);
+ if (!d->egl.ctx) {
+ g_set_error_literal(err, SPICE_CLIENT_ERROR, SPICE_CLIENT_ERROR_FAILED,
+ "cannot create EGL context");
+ return FALSE;
+ }
+
+ eglMakeCurrent(d->egl.display, EGL_NO_SURFACE, EGL_NO_SURFACE,
+ d->egl.ctx);
+
+ return spice_egl_init_shaders(display, err);
+}
+
+static gboolean spice_widget_init_egl_win(SpiceDisplay *display, GdkWindow *win,
+ GError **err)
+{
+ SpiceDisplayPrivate *d = SPICE_DISPLAY_GET_PRIVATE(display);
+ EGLNativeWindowType native = 0;
+ EGLBoolean b;
+
+ if (d->egl.surface)
+ return TRUE;
+
+#ifdef GDK_WINDOWING_X11
+ if (GDK_IS_X11_WINDOW(win)) {
+ native = (EGLNativeWindowType)gdk_x11_window_get_xid(win);
+ }
+#endif
+
+ if (!native) {
+ g_set_error_literal(err, SPICE_CLIENT_ERROR, SPICE_CLIENT_ERROR_FAILED,
+ "this platform isn't supported");
+ return FALSE;
+ }
+
+ d->egl.surface = eglCreateWindowSurface(d->egl.display,
+ d->egl.conf,
+ native, NULL);
+
+ if (!d->egl.surface) {
+ g_set_error_literal(err, SPICE_CLIENT_ERROR, SPICE_CLIENT_ERROR_FAILED,
+ "failed to init egl surface");
+ return FALSE;
+ }
+
+ b = eglMakeCurrent(d->egl.display,
+ d->egl.surface,
+ d->egl.surface,
+ d->egl.ctx);
+ if (!b) {
+ g_set_error_literal(err, SPICE_CLIENT_ERROR, SPICE_CLIENT_ERROR_FAILED,
+ "failed to activate context");
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+G_GNUC_INTERNAL
+gboolean spice_egl_realize_display(SpiceDisplay *display, GdkWindow *win, GError **err)
+{
+ SPICE_DEBUG("egl realize");
+ if (!spice_widget_init_egl_win(display, win, err))
+ return FALSE;
+
+ spice_egl_resize_display(display, gdk_window_get_width(win),
+ gdk_window_get_height(win));
+
+ return TRUE;
+}
+
+G_GNUC_INTERNAL
+void spice_egl_unrealize_display(SpiceDisplay *display)
+{
+ SpiceDisplayPrivate *d = SPICE_DISPLAY_GET_PRIVATE(display);
+
+ SPICE_DEBUG("egl unrealize %p", d->egl.surface);
+
+ if (d->egl.image != NULL) {
+ eglDestroyImageKHR(d->egl.display, d->egl.image);
+ d->egl.image = NULL;
+ }
+
+ if (d->egl.tex_id) {
+ glDeleteTextures(1, &d->egl.tex_id);
+ d->egl.tex_id = 0;
+ }
+
+ if (d->egl.tex_pointer_id) {
+ glDeleteTextures(1, &d->egl.tex_pointer_id);
+ d->egl.tex_pointer_id = 0;
+ }
+
+ if (d->egl.surface != EGL_NO_SURFACE) {
+ eglDestroySurface(d->egl.display, d->egl.surface);
+ d->egl.surface = EGL_NO_SURFACE;
+ }
+ if (d->egl.vbuf_id) {
+ glDeleteBuffers(1, &d->egl.vbuf_id);
+ d->egl.vbuf_id = 0;
+ }
+
+ if (d->egl.prog) {
+ glDeleteProgram(d->egl.prog);
+ d->egl.prog = 0;
+ }
+
+ if (d->egl.ctx) {
+ eglDestroyContext(d->egl.display, d->egl.ctx);
+ d->egl.ctx = 0;
+ }
+
+ eglMakeCurrent(d->egl.display, EGL_NO_SURFACE, EGL_NO_SURFACE,
+ EGL_NO_CONTEXT);
+}
+
+G_GNUC_INTERNAL
+void spice_egl_resize_display(SpiceDisplay *display, int w, int h)
+{
+ SpiceDisplayPrivate *d = SPICE_DISPLAY_GET_PRIVATE(display);
+ int prog;
+
+ glGetIntegerv(GL_CURRENT_PROGRAM, &prog);
+
+ glUseProgram(d->egl.prog);
+ apply_ortho(d->egl.mproj, 0, w, 0, h, -1, 1);
+ glViewport(0, 0, w, h);
+
+ if (d->egl.image)
+ spice_egl_update_display(display);
+
+ glUseProgram(prog);
+}
+
+static void
+draw_rect_from_arrays(SpiceDisplay *display, const void *verts, const void *tex)
+{
+ SpiceDisplayPrivate *d = SPICE_DISPLAY_GET_PRIVATE(display);
+
+ glBindBuffer(GL_ARRAY_BUFFER, d->egl.vbuf_id);
+
+ if (verts) {
+ glEnableVertexAttribArray(d->egl.attr_pos);
+ glBufferSubData(GL_ARRAY_BUFFER,
+ 0,
+ VERTS_ARRAY_SIZE,
+ verts);
+ glVertexAttribPointer(d->egl.attr_pos, 4, GL_FLOAT,
+ GL_FALSE, 0, 0);
+ }
+ if (tex) {
+ glEnableVertexAttribArray(d->egl.attr_tex);
+ glBufferSubData(GL_ARRAY_BUFFER,
+ VERTS_ARRAY_SIZE,
+ TEX_ARRAY_SIZE,
+ tex);
+ glVertexAttribPointer(d->egl.attr_tex, 2, GL_FLOAT,
+ GL_FALSE, 0,
+ (void *)VERTS_ARRAY_SIZE);
+ }
+
+ glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
+ if (verts)
+ glDisableVertexAttribArray(d->egl.attr_pos);
+ if (tex)
+ glDisableVertexAttribArray(d->egl.attr_tex);
+
+ glBindBuffer(GL_ARRAY_BUFFER, 0);
+}
+
+static GLvoid
+client_draw_rect_tex(SpiceDisplay *display,
+ float x, float y, float w, float h,
+ float tx, float ty, float tw, float th)
+{
+ float verts[4][4];
+ float tex[4][2];
+
+ verts[0][0] = x;
+ verts[0][1] = y;
+ verts[0][2] = 0.0;
+ verts[0][3] = 1.0;
+ tex[0][0] = tx;
+ tex[0][1] = ty;
+ verts[1][0] = x + w;
+ verts[1][1] = y;
+ verts[1][2] = 0.0;
+ verts[1][3] = 1.0;
+ tex[1][0] = tx + tw;
+ tex[1][1] = ty;
+ verts[2][0] = x;
+ verts[2][1] = y + h;
+ verts[2][2] = 0.0;
+ verts[2][3] = 1.0;
+ tex[2][0] = tx;
+ tex[2][1] = ty + th;
+ verts[3][0] = x + w;
+ verts[3][1] = y + h;
+ verts[3][2] = 0.0;
+ verts[3][3] = 1.0;
+ tex[3][0] = tx + tw;
+ tex[3][1] = ty + th;
+
+ draw_rect_from_arrays(display, verts, tex);
+}
+
+G_GNUC_INTERNAL
+void spice_egl_cursor_set(SpiceDisplay *display)
+{
+ SpiceDisplayPrivate *d = SPICE_DISPLAY_GET_PRIVATE(display);
+ GdkPixbuf *image = d->mouse_pixbuf;
+
+ if (image == NULL)
+ return;
+
+ int width = gdk_pixbuf_get_width(image);
+ int height = gdk_pixbuf_get_height(image);
+
+ glBindTexture(GL_TEXTURE_2D, d->egl.tex_pointer_id);
+ glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+ glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA,
+ width, height, 0,
+ GL_RGBA, GL_UNSIGNED_BYTE,
+ gdk_pixbuf_read_pixels(image));
+ glBindTexture(GL_TEXTURE_2D, 0);
+}
+
+G_GNUC_INTERNAL
+void spice_egl_update_display(SpiceDisplay *display)
+{
+ SpiceDisplayPrivate *d = SPICE_DISPLAY_GET_PRIVATE(display);
+ double s;
+ int x, y, w, h;
+ gdouble tx, ty, tw, th;
+ int prog;
+
+ g_return_if_fail(d->egl.image != NULL);
+ if (d->egl.surface == EGL_NO_SURFACE)
+ return;
+
+ spice_display_get_scaling(display, &s, &x, &y, &w, &h);
+
+ glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
+ glClear(GL_COLOR_BUFFER_BIT);
+
+ tx = ((float)d->area.x / (float)d->egl.scanout.width);
+ ty = ((float)d->area.y / (float)d->egl.scanout.height);
+ tw = ((float)d->area.width / (float)d->egl.scanout.width);
+ th = ((float)d->area.height / (float)d->egl.scanout.height);
+
+ /* convert to opengl coordinates, 0 is bottom, 1 is top. ty should
+ * be the bottom of the area, since th is upward */
+ /* 1+---------------+ */
+ /* | | */
+ /* | ty to |th | */
+ /* | | -> | | */
+ /* | |th ty | */
+ /* | | */
+ /* | | */
+ /* +---------------+ */
+ /* 0 */
+ ty = 1 - (ty + th);
+
+
+ /* if the scanout is inverted, then invert coordinates and direction too */
+ if (!d->egl.scanout.y0top) {
+ ty = 1 - ty;
+ th = -1 * th;
+ }
+ SPICE_DEBUG("update %f +%d+%d %dx%d +%f+%f %fx%f", s, x, y, w, h,
+ tx, ty, tw, th);
+
+ glBindTexture(GL_TEXTURE_2D, d->egl.tex_id);
+ glDisable(GL_BLEND);
+ glGetIntegerv(GL_CURRENT_PROGRAM, &prog);
+ glUseProgram(d->egl.prog);
+ client_draw_rect_tex(display, x, y, w, h,
+ tx, ty, tw, th);
+
+ if (d->mouse_mode == SPICE_MOUSE_MODE_SERVER &&
+ d->mouse_guest_x != -1 && d->mouse_guest_y != -1 &&
+ !d->show_cursor &&
+ spice_gtk_session_get_pointer_grabbed(d->gtk_session) &&
+ d->mouse_pixbuf != NULL) {
+ GdkPixbuf *image = d->mouse_pixbuf;
+ int width = gdk_pixbuf_get_width(image);
+ int height = gdk_pixbuf_get_height(image);
+
+ glBindTexture(GL_TEXTURE_2D, d->egl.tex_pointer_id);
+ glEnable(GL_BLEND);
+ glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+ client_draw_rect_tex(display,
+ x + (d->mouse_guest_x - d->mouse_hotspot.x) * s,
+ y + h - (d->mouse_guest_y - d->mouse_hotspot.y) * s,
+ width, -height,
+ 0, 0, 1, 1);
+ }
+
+ eglSwapBuffers(d->egl.display, d->egl.surface);
+
+ glUseProgram(prog);
+}
+
+
+G_GNUC_INTERNAL
+gboolean spice_egl_update_scanout(SpiceDisplay *display,
+ const SpiceGlScanout *scanout,
+ GError **err)
+{
+ SpiceDisplayPrivate *d = SPICE_DISPLAY_GET_PRIVATE(display);
+ EGLint attrs[13];
+ guint32 format;
+
+ g_return_val_if_fail(scanout != NULL, FALSE);
+ format = scanout->format;
+
+ if (d->egl.image != NULL) {
+ eglDestroyImageKHR(d->egl.display, d->egl.image);
+ d->egl.image = NULL;
+ }
+
+ if (scanout->fd == -1)
+ return TRUE;
+
+ attrs[0] = EGL_DMA_BUF_PLANE0_FD_EXT;
+ attrs[1] = scanout->fd;
+ attrs[2] = EGL_DMA_BUF_PLANE0_PITCH_EXT;
+ attrs[3] = scanout->stride;
+ attrs[4] = EGL_DMA_BUF_PLANE0_OFFSET_EXT;
+ attrs[5] = 0;
+ attrs[6] = EGL_WIDTH;
+ attrs[7] = scanout->width;
+ attrs[8] = EGL_HEIGHT;
+ attrs[9] = scanout->height;
+ attrs[10] = EGL_LINUX_DRM_FOURCC_EXT;
+ attrs[11] = format;
+ attrs[12] = EGL_NONE;
+ SPICE_DEBUG("fd:%d stride:%d y0:%d %dx%d format:0x%x (%c%c%c%c)",
+ scanout->fd, scanout->stride, scanout->y0top,
+ scanout->width, scanout->height, format,
+ format & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff, format >> 24);
+
+ d->egl.image = eglCreateImageKHR(d->egl.display,
+ EGL_NO_CONTEXT,
+ EGL_LINUX_DMA_BUF_EXT,
+ (EGLClientBuffer)NULL,
+ attrs);
+
+ glBindTexture(GL_TEXTURE_2D, d->egl.tex_id);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+ glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, (GLeglImageOES)d->egl.image);
+ d->egl.scanout = *scanout;
+
+ return TRUE;
+}
diff --git a/src/spice-widget-priv.h b/src/spice-widget-priv.h
index 682e889..c708e25 100644
--- a/src/spice-widget-priv.h
+++ b/src/spice-widget-priv.h
@@ -30,6 +30,10 @@
#include <windows.h>
#endif
+#ifdef USE_EPOXY
+#include <epoxy/egl.h>
+#endif
+
#include "spice-widget.h"
#include "spice-common.h"
#include "spice-gtk-session.h"
@@ -124,6 +128,22 @@ struct _SpiceDisplayPrivate {
int x11_accel_denominator;
int x11_threshold;
#endif
+#ifdef USE_EPOXY
+ struct {
+ gboolean enabled;
+ EGLSurface surface;
+ EGLDisplay display;
+ EGLConfig conf;
+ EGLContext ctx;
+ gint mproj, attr_pos, attr_tex;
+ guint vbuf_id;
+ guint tex_id;
+ guint tex_pointer_id;
+ guint prog;
+ EGLImageKHR image;
+ SpiceGlScanout scanout;
+ } egl;
+#endif
};
int spicex_image_create (SpiceDisplay *display);
@@ -135,6 +155,16 @@ void spicex_expose_event (SpiceDisplay *display, GdkEventExp
#endif
gboolean spicex_is_scaled (SpiceDisplay *display);
void spice_display_get_scaling (SpiceDisplay *display, double *s, int *x, int *y, int *w, int *h);
+gboolean spice_egl_init (SpiceDisplay *display, GError **err);
+gboolean spice_egl_realize_display (SpiceDisplay *display, GdkWindow *win,
+ GError **err);
+void spice_egl_unrealize_display (SpiceDisplay *display);
+void spice_egl_update_display (SpiceDisplay *display);
+void spice_egl_resize_display (SpiceDisplay *display, int w, int h);
+gboolean spice_egl_update_scanout (SpiceDisplay *display,
+ const SpiceGlScanout *scanout,
+ GError **err);
+void spice_egl_cursor_set (SpiceDisplay *display);
G_END_DECLS
diff --git a/src/spice-widget.c b/src/spice-widget.c
index 19753e7..c3577a1 100644
--- a/src/spice-widget.c
+++ b/src/spice-widget.c
@@ -552,6 +552,7 @@ static void spice_display_init(SpiceDisplay *display)
GtkWidget *widget = GTK_WIDGET(display);
SpiceDisplayPrivate *d;
GtkTargetEntry targets = { "text/uri-list", 0, 0 };
+ G_GNUC_UNUSED GError *err = NULL;
d = display->priv = SPICE_DISPLAY_GET_PRIVATE(display);
@@ -583,6 +584,13 @@ static void spice_display_init(SpiceDisplay *display)
d->mouse_cursor = get_blank_cursor();
d->have_mitshm = true;
+
+#ifdef USE_EPOXY
+ if (!spice_egl_init(display, &err)) {
+ g_critical("egl init failed: %s", err->message);
+ g_clear_error(&err);
+ }
+#endif
}
static GObject *
@@ -1132,6 +1140,20 @@ static gboolean do_color_convert(SpiceDisplay *display, GdkRectangle *r)
return true;
}
+static void set_egl_enabled(SpiceDisplay *display, bool enabled)
+{
+#ifdef USE_EPOXY
+ SpiceDisplayPrivate *d = display->priv;
+
+ if (d->egl.enabled != enabled) {
+ d->egl.enabled = enabled;
+ /* even though the function is marked as deprecated, it's the
+ * only way I found to prevent glitches when the window is
+ * resized. */
+ gtk_widget_set_double_buffered(GTK_WIDGET(display), !enabled);
+ }
+#endif
+}
#if GTK_CHECK_VERSION (2, 91, 0)
static gboolean draw_event(GtkWidget *widget, cairo_t *cr)
@@ -1140,6 +1162,13 @@ static gboolean draw_event(GtkWidget *widget, cairo_t *cr)
SpiceDisplayPrivate *d = display->priv;
g_return_val_if_fail(d != NULL, false);
+#ifdef USE_EPOXY
+ if (d->egl.enabled) {
+ spice_egl_update_display(display);
+ return false;
+ }
+#endif
+
if (d->mark == 0 || d->data == NULL ||
d->area.width == 0 || d->area.height == 0)
return false;
@@ -1760,6 +1789,10 @@ static void size_allocate(GtkWidget *widget, GtkAllocation *conf, gpointer data)
d->ww = conf->width;
d->wh = conf->height;
recalc_geometry(widget);
+#ifdef USE_EPOXY
+ if (d->egl.enabled)
+ spice_egl_resize_display(display, conf->width, conf->height);
+#endif
}
d->mx = conf->x;
@@ -1786,18 +1819,29 @@ static void realize(GtkWidget *widget)
{
SpiceDisplay *display = SPICE_DISPLAY(widget);
SpiceDisplayPrivate *d = display->priv;
+ G_GNUC_UNUSED GError *err = NULL;
GTK_WIDGET_CLASS(spice_display_parent_class)->realize(widget);
d->keycode_map =
vnc_display_keymap_gdk2xtkbd_table(gtk_widget_get_window(widget),
&d->keycode_maplen);
+
+#ifdef USE_EPOXY
+ if (!spice_egl_realize_display(display, gtk_widget_get_window(GTK_WIDGET(display)), &err)) {
+ g_critical("egl realize failed: %s", err->message);
+ g_clear_error(&err);
+ }
+#endif
update_image(display);
}
static void unrealize(GtkWidget *widget)
{
spicex_image_destroy(SPICE_DISPLAY(widget));
+#ifdef USE_EPOXY
+ spice_egl_unrealize_display(SPICE_DISPLAY(widget));
+#endif
GTK_WIDGET_CLASS(spice_display_parent_class)->unrealize(widget);
}
@@ -2206,6 +2250,8 @@ static void invalidate(SpiceChannel *channel,
.height = h
};
+ set_egl_enabled(display, false);
+
if (!gtk_widget_get_window(GTK_WIDGET(display)))
return;
@@ -2269,6 +2315,9 @@ static void cursor_set(SpiceCursorChannel *channel,
} else
g_warn_if_reached();
+#ifdef USE_EPOXY
+ spice_egl_cursor_set(display);
+#endif
if (d->show_cursor) {
/* unhide */
gdk_cursor_unref(d->show_cursor);
@@ -2416,6 +2465,38 @@ static void cursor_reset(SpiceCursorChannel *channel, gpointer data)
gdk_window_set_cursor(window, NULL);
}
+#ifdef USE_EPOXY
+static void gl_scanout(SpiceDisplay *display)
+{
+ SpiceDisplayPrivate *d = display->priv;
+ const SpiceGlScanout *scanout;
+ GError *err = NULL;
+
+ scanout = spice_display_get_gl_scanout(SPICE_DISPLAY_CHANNEL(d->display));
+ g_return_if_fail(scanout != NULL);
+
+ SPICE_DEBUG("%s: got scanout", __FUNCTION__);
+ set_egl_enabled(display, true);
+
+ if (!spice_egl_update_scanout(display, scanout, &err)) {
+ g_critical("update scanout failed: %s", err->message);
+ g_clear_error(&err);
+ }
+}
+
+static void gl_draw(SpiceDisplay *display,
+ guint32 x, guint32 y, guint32 w, guint32 h)
+{
+ SpiceDisplayPrivate *d = display->priv;
+
+ SPICE_DEBUG("%s", __FUNCTION__);
+ set_egl_enabled(display, true);
+
+ spice_egl_update_display(display);
+ spice_display_gl_draw_done(SPICE_DISPLAY_CHANNEL(d->display));
+}
+#endif
+
static void channel_new(SpiceSession *s, SpiceChannel *channel, gpointer data)
{
SpiceDisplay *display = data;
@@ -2451,6 +2532,13 @@ static void channel_new(SpiceSession *s, SpiceChannel *channel, gpointer data)
primary.stride, primary.shmid, primary.data, display);
mark(display, primary.marked);
}
+#ifdef USE_EPOXY
+ spice_g_signal_connect_object(channel, "notify::gl-scanout",
+ G_CALLBACK(gl_scanout), display, G_CONNECT_SWAPPED);
+ spice_g_signal_connect_object(channel, "gl-draw",
+ G_CALLBACK(gl_draw), display, G_CONNECT_SWAPPED);
+#endif
+
spice_channel_connect(channel);
return;
}
@@ -2634,34 +2722,57 @@ GdkPixbuf *spice_display_get_pixbuf(SpiceDisplay *display)
{
SpiceDisplayPrivate *d;
GdkPixbuf *pixbuf;
- int x, y;
- guchar *src, *data, *dest;
+ guchar *data;
g_return_val_if_fail(SPICE_IS_DISPLAY(display), NULL);
d = display->priv;
g_return_val_if_fail(d != NULL, NULL);
- /* TODO: ensure d->data has been exposed? */
- g_return_val_if_fail(d->data != NULL, NULL);
-
- data = g_malloc0(d->area.width * d->area.height * 3);
- src = d->data;
- dest = data;
-
- src += d->area.y * d->stride + d->area.x * 4;
- for (y = 0; y < d->area.height; ++y) {
- for (x = 0; x < d->area.width; ++x) {
- dest[0] = src[x * 4 + 2];
- dest[1] = src[x * 4 + 1];
- dest[2] = src[x * 4 + 0];
- dest += 3;
+ g_return_val_if_fail(d->display != NULL, NULL);
+
+#ifdef USE_EPOXY
+ if (d->egl.enabled) {
+ GdkPixbuf *tmp;
+
+ data = g_malloc0(d->area.width * d->area.height * 4);
+ glReadBuffer(GL_FRONT);
+ glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
+ glReadPixels(0, 0, d->area.width, d->area.height,
+ GL_RGBA, GL_UNSIGNED_BYTE, data);
+ tmp = gdk_pixbuf_new_from_data(data, GDK_COLORSPACE_RGB, true,
+ 8, d->area.width, d->area.height,
+ d->area.width * 4,
+ (GdkPixbufDestroyNotify)g_free, NULL);
+ pixbuf = gdk_pixbuf_flip(tmp, false);
+ g_object_unref(tmp);
+ } else
+#endif
+ {
+ guchar *src, *dest;
+ int x, y;
+
+ /* TODO: ensure d->data has been exposed? */
+ g_return_val_if_fail(d->data != NULL, NULL);
+ data = g_malloc0(d->area.width * d->area.height * 3);
+ src = d->data;
+ dest = data;
+
+ src += d->area.y * d->stride + d->area.x * 4;
+ for (y = 0; y < d->area.height; ++y) {
+ for (x = 0; x < d->area.width; ++x) {
+ dest[0] = src[x * 4 + 2];
+ dest[1] = src[x * 4 + 1];
+ dest[2] = src[x * 4 + 0];
+ dest += 3;
+ }
+ src += d->stride;
}
- src += d->stride;
+ pixbuf = gdk_pixbuf_new_from_data(data, GDK_COLORSPACE_RGB, false,
+ 8, d->area.width, d->area.height,
+ d->area.width * 3,
+ (GdkPixbufDestroyNotify)g_free, NULL);
}
- pixbuf = gdk_pixbuf_new_from_data(data, GDK_COLORSPACE_RGB, false,
- 8, d->area.width, d->area.height, d->area.width * 3,
- (GdkPixbufDestroyNotify)g_free, NULL);
return pixbuf;
}
--
2.5.0
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