LXR qemu/ui/gtk-egl.c

   1/*
   2 * GTK UI -- egl opengl code.
   3 *
   4 * Note that gtk 3.16+ (released 2015-03-23) has a GtkGLArea widget,
   5 * which is GtkDrawingArea like widget with opengl rendering support.
   6 *
   7 * This code handles opengl support on older gtk versions, using egl
   8 * to get a opengl context for the X11 window.
   9 *
  10 * This work is licensed under the terms of the GNU GPL, version 2 or later.
  11 * See the COPYING file in the top-level directory.
  12 */
  13
  14#include "qemu/osdep.h"
  15#include "qemu/main-loop.h"
  16
  17#include "trace.h"
  18
  19#include "ui/console.h"
  20#include "ui/gtk.h"
  21#include "ui/egl-helpers.h"
  22#include "ui/shader.h"
  23
  24#include "sysemu/sysemu.h"
  25
  26static void gtk_egl_set_scanout_mode(VirtualConsole *vc, bool scanout)
  27{
  28    if (vc->gfx.scanout_mode == scanout) {
  29        return;
  30    }
  31
  32    vc->gfx.scanout_mode = scanout;
  33    if (!vc->gfx.scanout_mode) {
  34        egl_fb_destroy(&vc->gfx.guest_fb);
  35        if (vc->gfx.surface) {
  36            surface_gl_destroy_texture(vc->gfx.gls, vc->gfx.ds);
  37            surface_gl_create_texture(vc->gfx.gls, vc->gfx.ds);
  38        }
  39    }
  40}
  41
  42/** DisplayState Callbacks (opengl version) **/
  43
  44void gd_egl_init(VirtualConsole *vc)
  45{
  46    GdkWindow *gdk_window = gtk_widget_get_window(vc->gfx.drawing_area);
  47    if (!gdk_window) {
  48        return;
  49    }
  50
  51    Window x11_window = gdk_x11_window_get_xid(gdk_window);
  52    if (!x11_window) {
  53        return;
  54    }
  55
  56    vc->gfx.ectx = qemu_egl_init_ctx();
  57    vc->gfx.esurface = qemu_egl_init_surface_x11
  58        (vc->gfx.ectx, (EGLNativeWindowType)x11_window);
  59
  60    assert(vc->gfx.esurface);
  61}
  62
  63void gd_egl_draw(VirtualConsole *vc)
  64{
  65    GdkWindow *window;
  66#ifdef CONFIG_GBM
  67    QemuDmaBuf *dmabuf = vc->gfx.guest_fb.dmabuf;
  68#endif
  69    int ww, wh;
  70
  71    if (!vc->gfx.gls) {
  72        return;
  73    }
  74
  75    window = gtk_widget_get_window(vc->gfx.drawing_area);
  76    ww = gdk_window_get_width(window);
  77    wh = gdk_window_get_height(window);
  78
  79    if (vc->gfx.scanout_mode) {
  80#ifdef CONFIG_GBM
  81        if (dmabuf) {
  82            if (!dmabuf->draw_submitted) {
  83                return;
  84            } else {
  85                dmabuf->draw_submitted = false;
  86            }
  87        }
  88#endif
  89        gd_egl_scanout_flush(&vc->gfx.dcl, 0, 0, vc->gfx.w, vc->gfx.h);
  90
  91        vc->gfx.scale_x = (double)ww / vc->gfx.w;
  92        vc->gfx.scale_y = (double)wh / vc->gfx.h;
  93
  94        glFlush();
  95#ifdef CONFIG_GBM
  96        if (dmabuf) {
  97            egl_dmabuf_create_fence(dmabuf);
  98            if (dmabuf->fence_fd > 0) {
  99                qemu_set_fd_handler(dmabuf->fence_fd, gd_hw_gl_flushed, NULL, vc);
 100                return;
 101            }
 102            graphic_hw_gl_block(vc->gfx.dcl.con, false);
 103        }
 104#endif
 105    } else {
 106        if (!vc->gfx.ds) {
 107            return;
 108        }
 109        eglMakeCurrent(qemu_egl_display, vc->gfx.esurface,
 110                       vc->gfx.esurface, vc->gfx.ectx);
 111
 112        surface_gl_setup_viewport(vc->gfx.gls, vc->gfx.ds, ww, wh);
 113        surface_gl_render_texture(vc->gfx.gls, vc->gfx.ds);
 114
 115        eglSwapBuffers(qemu_egl_display, vc->gfx.esurface);
 116
 117        vc->gfx.scale_x = (double)ww / surface_width(vc->gfx.ds);
 118        vc->gfx.scale_y = (double)wh / surface_height(vc->gfx.ds);
 119
 120        glFlush();
 121    }
 122
 123    graphic_hw_gl_flushed(vc->gfx.dcl.con);
 124}
 125
 126void gd_egl_update(DisplayChangeListener *dcl,
 127                   int x, int y, int w, int h)
 128{
 129    VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
 130
 131    if (!vc->gfx.gls || !vc->gfx.ds) {
 132        return;
 133    }
 134
 135    eglMakeCurrent(qemu_egl_display, vc->gfx.esurface,
 136                   vc->gfx.esurface, vc->gfx.ectx);
 137    surface_gl_update_texture(vc->gfx.gls, vc->gfx.ds, x, y, w, h);
 138    vc->gfx.glupdates++;
 139}
 140
 141void gd_egl_refresh(DisplayChangeListener *dcl)
 142{
 143    VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
 144
 145    vc->gfx.dcl.update_interval = gd_monitor_update_interval(
 146            vc->window ? vc->window : vc->gfx.drawing_area);
 147
 148    if (!vc->gfx.esurface) {
 149        gd_egl_init(vc);
 150        if (!vc->gfx.esurface) {
 151            return;
 152        }
 153        vc->gfx.gls = qemu_gl_init_shader();
 154        if (vc->gfx.ds) {
 155            surface_gl_destroy_texture(vc->gfx.gls, vc->gfx.ds);
 156            surface_gl_create_texture(vc->gfx.gls, vc->gfx.ds);
 157        }
 158#ifdef CONFIG_GBM
 159        if (vc->gfx.guest_fb.dmabuf) {
 160            egl_dmabuf_release_texture(vc->gfx.guest_fb.dmabuf);
 161            gd_egl_scanout_dmabuf(dcl, vc->gfx.guest_fb.dmabuf);
 162        }
 163#endif
 164    }
 165
 166    graphic_hw_update(dcl->con);
 167
 168    if (vc->gfx.glupdates) {
 169        vc->gfx.glupdates = 0;
 170        gtk_egl_set_scanout_mode(vc, false);
 171        gd_egl_draw(vc);
 172    }
 173}
 174
 175void gd_egl_switch(DisplayChangeListener *dcl,
 176                   DisplaySurface *surface)
 177{
 178    VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
 179    bool resized = true;
 180
 181    trace_gd_switch(vc->label, surface_width(surface), surface_height(surface));
 182
 183    if (vc->gfx.ds &&
 184        surface_width(vc->gfx.ds) == surface_width(surface) &&
 185        surface_height(vc->gfx.ds) == surface_height(surface)) {
 186        resized = false;
 187    }
 188    eglMakeCurrent(qemu_egl_display, vc->gfx.esurface,
 189                   vc->gfx.esurface, vc->gfx.ectx);
 190
 191    surface_gl_destroy_texture(vc->gfx.gls, vc->gfx.ds);
 192    vc->gfx.ds = surface;
 193    if (vc->gfx.gls) {
 194        surface_gl_create_texture(vc->gfx.gls, vc->gfx.ds);
 195    }
 196
 197    if (resized) {
 198        gd_update_windowsize(vc);
 199    }
 200}
 201
 202QEMUGLContext gd_egl_create_context(DisplayChangeListener *dcl,
 203                                    QEMUGLParams *params)
 204{
 205    VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
 206
 207    eglMakeCurrent(qemu_egl_display, vc->gfx.esurface,
 208                   vc->gfx.esurface, vc->gfx.ectx);
 209    return qemu_egl_create_context(dcl, params);
 210}
 211
 212void gd_egl_scanout_disable(DisplayChangeListener *dcl)
 213{
 214    VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
 215
 216    vc->gfx.w = 0;
 217    vc->gfx.h = 0;
 218    gtk_egl_set_scanout_mode(vc, false);
 219}
 220
 221void gd_egl_scanout_texture(DisplayChangeListener *dcl,
 222                            uint32_t backing_id, bool backing_y_0_top,
 223                            uint32_t backing_width, uint32_t backing_height,
 224                            uint32_t x, uint32_t y,
 225                            uint32_t w, uint32_t h)
 226{
 227    VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
 228
 229    vc->gfx.x = x;
 230    vc->gfx.y = y;
 231    vc->gfx.w = w;
 232    vc->gfx.h = h;
 233    vc->gfx.y0_top = backing_y_0_top;
 234
 235    eglMakeCurrent(qemu_egl_display, vc->gfx.esurface,
 236                   vc->gfx.esurface, vc->gfx.ectx);
 237
 238    gtk_egl_set_scanout_mode(vc, true);
 239    egl_fb_setup_for_tex(&vc->gfx.guest_fb, backing_width, backing_height,
 240                         backing_id, false);
 241}
 242
 243void gd_egl_scanout_dmabuf(DisplayChangeListener *dcl,
 244                           QemuDmaBuf *dmabuf)
 245{
 246#ifdef CONFIG_GBM
 247    VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
 248
 249    eglMakeCurrent(qemu_egl_display, vc->gfx.esurface,
 250                   vc->gfx.esurface, vc->gfx.ectx);
 251
 252    egl_dmabuf_import_texture(dmabuf);
 253    if (!dmabuf->texture) {
 254        return;
 255    }
 256
 257    gd_egl_scanout_texture(dcl, dmabuf->texture,
 258                           false, dmabuf->width, dmabuf->height,
 259                           0, 0, dmabuf->width, dmabuf->height);
 260
 261    if (dmabuf->allow_fences) {
 262        vc->gfx.guest_fb.dmabuf = dmabuf;
 263    }
 264#endif
 265}
 266
 267void gd_egl_cursor_dmabuf(DisplayChangeListener *dcl,
 268                          QemuDmaBuf *dmabuf, bool have_hot,
 269                          uint32_t hot_x, uint32_t hot_y)
 270{
 271#ifdef CONFIG_GBM
 272    VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
 273
 274    if (dmabuf) {
 275        egl_dmabuf_import_texture(dmabuf);
 276        if (!dmabuf->texture) {
 277            return;
 278        }
 279        egl_fb_setup_for_tex(&vc->gfx.cursor_fb, dmabuf->width, dmabuf->height,
 280                             dmabuf->texture, false);
 281    } else {
 282        egl_fb_destroy(&vc->gfx.cursor_fb);
 283    }
 284#endif
 285}
 286
 287void gd_egl_cursor_position(DisplayChangeListener *dcl,
 288                            uint32_t pos_x, uint32_t pos_y)
 289{
 290    VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
 291
 292    vc->gfx.cursor_x = pos_x * vc->gfx.scale_x;
 293    vc->gfx.cursor_y = pos_y * vc->gfx.scale_y;
 294}
 295
 296void gd_egl_scanout_flush(DisplayChangeListener *dcl,
 297                          uint32_t x, uint32_t y, uint32_t w, uint32_t h)
 298{
 299    VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
 300    GdkWindow *window;
 301    int ww, wh;
 302
 303    if (!vc->gfx.scanout_mode) {
 304        return;
 305    }
 306    if (!vc->gfx.guest_fb.framebuffer) {
 307        return;
 308    }
 309
 310    eglMakeCurrent(qemu_egl_display, vc->gfx.esurface,
 311                   vc->gfx.esurface, vc->gfx.ectx);
 312
 313    window = gtk_widget_get_window(vc->gfx.drawing_area);
 314    ww = gdk_window_get_width(window);
 315    wh = gdk_window_get_height(window);
 316    egl_fb_setup_default(&vc->gfx.win_fb, ww, wh);
 317    if (vc->gfx.cursor_fb.texture) {
 318        egl_texture_blit(vc->gfx.gls, &vc->gfx.win_fb, &vc->gfx.guest_fb,
 319                         vc->gfx.y0_top);
 320        egl_texture_blend(vc->gfx.gls, &vc->gfx.win_fb, &vc->gfx.cursor_fb,
 321                          vc->gfx.y0_top,
 322                          vc->gfx.cursor_x, vc->gfx.cursor_y,
 323                          vc->gfx.scale_x, vc->gfx.scale_y);
 324    } else {
 325        egl_fb_blit(&vc->gfx.win_fb, &vc->gfx.guest_fb, !vc->gfx.y0_top);
 326    }
 327
 328#ifdef CONFIG_GBM
 329    if (vc->gfx.guest_fb.dmabuf) {
 330        egl_dmabuf_create_sync(vc->gfx.guest_fb.dmabuf);
 331    }
 332#endif
 333
 334    eglSwapBuffers(qemu_egl_display, vc->gfx.esurface);
 335}
 336
 337void gd_egl_flush(DisplayChangeListener *dcl,
 338                  uint32_t x, uint32_t y, uint32_t w, uint32_t h)
 339{
 340    VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
 341    GtkWidget *area = vc->gfx.drawing_area;
 342
 343    if (vc->gfx.guest_fb.dmabuf) {
 344        graphic_hw_gl_block(vc->gfx.dcl.con, true);
 345        vc->gfx.guest_fb.dmabuf->draw_submitted = true;
 346        gtk_widget_queue_draw_area(area, x, y, w, h);
 347        return;
 348    }
 349
 350    gd_egl_scanout_flush(&vc->gfx.dcl, x, y, w, h);
 351}
 352
 353void gtk_egl_init(DisplayGLMode mode)
 354{
 355    GdkDisplay *gdk_display = gdk_display_get_default();
 356    Display *x11_display = gdk_x11_display_get_xdisplay(gdk_display);
 357
 358    if (qemu_egl_init_dpy_x11(x11_display, mode) < 0) {
 359        return;
 360    }
 361
 362    display_opengl = 1;
 363}
 364
 365int gd_egl_make_current(DisplayChangeListener *dcl,
 366                        QEMUGLContext ctx)
 367{
 368    VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
 369
 370    return eglMakeCurrent(qemu_egl_display, vc->gfx.esurface,
 371                          vc->gfx.esurface, ctx);
 372}
 373