cachepc-qemu

Fork of AMDESE/qemu with changes for cachepc side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-qemu
Log | Files | Refs | Submodules | LICENSE | sfeed.txt

gtk-gl-area.c (7784B)

      1/*
      2 * GTK UI -- glarea opengl code.
      3 *
      4 * Requires 3.16+ (GtkGLArea widget).
      5 *
      6 * This work is licensed under the terms of the GNU GPL, version 2 or later.
      7 * See the COPYING file in the top-level directory.
      8 */
      9
     10#include "qemu/osdep.h"
     11#include "qemu/main-loop.h"
     12
     13#include "trace.h"
     14
     15#include "ui/console.h"
     16#include "ui/gtk.h"
     17#include "ui/egl-helpers.h"
     18
     19#include "sysemu/sysemu.h"
     20
     21static void gtk_gl_area_set_scanout_mode(VirtualConsole *vc, bool scanout)
     22{
     23    if (vc->gfx.scanout_mode == scanout) {
     24        return;
     25    }
     26
     27    vc->gfx.scanout_mode = scanout;
     28    if (!vc->gfx.scanout_mode) {
     29        egl_fb_destroy(&vc->gfx.guest_fb);
     30        if (vc->gfx.surface) {
     31            surface_gl_destroy_texture(vc->gfx.gls, vc->gfx.ds);
     32            surface_gl_create_texture(vc->gfx.gls, vc->gfx.ds);
     33        }
     34    }
     35}
     36
     37/** DisplayState Callbacks (opengl version) **/
     38
     39void gd_gl_area_draw(VirtualConsole *vc)
     40{
     41    int ww, wh, y1, y2;
     42
     43    if (!vc->gfx.gls) {
     44        return;
     45    }
     46
     47    gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
     48    ww = gtk_widget_get_allocated_width(vc->gfx.drawing_area);
     49    wh = gtk_widget_get_allocated_height(vc->gfx.drawing_area);
     50
     51    if (vc->gfx.scanout_mode) {
     52        if (!vc->gfx.guest_fb.framebuffer) {
     53            return;
     54        }
     55
     56        glBindFramebuffer(GL_READ_FRAMEBUFFER, vc->gfx.guest_fb.framebuffer);
     57        /* GtkGLArea sets GL_DRAW_FRAMEBUFFER for us */
     58
     59        glViewport(0, 0, ww, wh);
     60        y1 = vc->gfx.y0_top ? 0 : vc->gfx.h;
     61        y2 = vc->gfx.y0_top ? vc->gfx.h : 0;
     62        glBlitFramebuffer(0, y1, vc->gfx.w, y2,
     63                          0, 0, ww, wh,
     64                          GL_COLOR_BUFFER_BIT, GL_NEAREST);
     65    } else {
     66        if (!vc->gfx.ds) {
     67            return;
     68        }
     69        gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
     70
     71        surface_gl_setup_viewport(vc->gfx.gls, vc->gfx.ds, ww, wh);
     72        surface_gl_render_texture(vc->gfx.gls, vc->gfx.ds);
     73    }
     74
     75#ifdef CONFIG_GBM
     76    if (vc->gfx.guest_fb.dmabuf) {
     77        egl_dmabuf_create_sync(vc->gfx.guest_fb.dmabuf);
     78    }
     79#endif
     80
     81    glFlush();
     82#ifdef CONFIG_GBM
     83    if (vc->gfx.guest_fb.dmabuf) {
     84        QemuDmaBuf *dmabuf = vc->gfx.guest_fb.dmabuf;
     85
     86        egl_dmabuf_create_fence(dmabuf);
     87        if (dmabuf->fence_fd > 0) {
     88            qemu_set_fd_handler(dmabuf->fence_fd, gd_hw_gl_flushed, NULL, vc);
     89            return;
     90        }
     91        graphic_hw_gl_block(vc->gfx.dcl.con, false);
     92    }
     93#endif
     94    graphic_hw_gl_flushed(vc->gfx.dcl.con);
     95}
     96
     97void gd_gl_area_update(DisplayChangeListener *dcl,
     98                   int x, int y, int w, int h)
     99{
    100    VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
    101
    102    if (!vc->gfx.gls || !vc->gfx.ds) {
    103        return;
    104    }
    105
    106    gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
    107    surface_gl_update_texture(vc->gfx.gls, vc->gfx.ds, x, y, w, h);
    108    vc->gfx.glupdates++;
    109}
    110
    111void gd_gl_area_refresh(DisplayChangeListener *dcl)
    112{
    113    VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
    114
    115    if (!vc->gfx.gls) {
    116        if (!gtk_widget_get_realized(vc->gfx.drawing_area)) {
    117            return;
    118        }
    119        gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
    120        vc->gfx.gls = qemu_gl_init_shader();
    121        if (vc->gfx.ds) {
    122            surface_gl_create_texture(vc->gfx.gls, vc->gfx.ds);
    123        }
    124    }
    125
    126    graphic_hw_update(dcl->con);
    127
    128    if (vc->gfx.glupdates) {
    129        vc->gfx.glupdates = 0;
    130        gtk_gl_area_set_scanout_mode(vc, false);
    131        gtk_gl_area_queue_render(GTK_GL_AREA(vc->gfx.drawing_area));
    132    }
    133}
    134
    135void gd_gl_area_switch(DisplayChangeListener *dcl,
    136                       DisplaySurface *surface)
    137{
    138    VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
    139    bool resized = true;
    140
    141    trace_gd_switch(vc->label, surface_width(surface), surface_height(surface));
    142
    143    if (vc->gfx.ds &&
    144        surface_width(vc->gfx.ds) == surface_width(surface) &&
    145        surface_height(vc->gfx.ds) == surface_height(surface)) {
    146        resized = false;
    147    }
    148
    149    if (vc->gfx.gls) {
    150        gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
    151        surface_gl_destroy_texture(vc->gfx.gls, vc->gfx.ds);
    152        surface_gl_create_texture(vc->gfx.gls, surface);
    153    }
    154    vc->gfx.ds = surface;
    155
    156    if (resized) {
    157        gd_update_windowsize(vc);
    158    }
    159}
    160
    161QEMUGLContext gd_gl_area_create_context(DisplayChangeListener *dcl,
    162                                        QEMUGLParams *params)
    163{
    164    VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
    165    GdkWindow *window;
    166    GdkGLContext *ctx;
    167    GError *err = NULL;
    168
    169    gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
    170    window = gtk_widget_get_window(vc->gfx.drawing_area);
    171    ctx = gdk_window_create_gl_context(window, &err);
    172    if (err) {
    173        g_printerr("Create gdk gl context failed: %s\n", err->message);
    174        g_error_free(err);
    175        return NULL;
    176    }
    177    gdk_gl_context_set_required_version(ctx,
    178                                        params->major_ver,
    179                                        params->minor_ver);
    180    gdk_gl_context_realize(ctx, &err);
    181    if (err) {
    182        g_printerr("Realize gdk gl context failed: %s\n", err->message);
    183        g_error_free(err);
    184        g_clear_object(&ctx);
    185        return NULL;
    186    }
    187    return ctx;
    188}
    189
    190void gd_gl_area_destroy_context(DisplayChangeListener *dcl, QEMUGLContext ctx)
    191{
    192    /* FIXME */
    193}
    194
    195void gd_gl_area_scanout_texture(DisplayChangeListener *dcl,
    196                                uint32_t backing_id,
    197                                bool backing_y_0_top,
    198                                uint32_t backing_width,
    199                                uint32_t backing_height,
    200                                uint32_t x, uint32_t y,
    201                                uint32_t w, uint32_t h)
    202{
    203    VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
    204
    205    vc->gfx.x = x;
    206    vc->gfx.y = y;
    207    vc->gfx.w = w;
    208    vc->gfx.h = h;
    209    vc->gfx.y0_top = backing_y_0_top;
    210
    211    gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
    212
    213    if (backing_id == 0 || vc->gfx.w == 0 || vc->gfx.h == 0) {
    214        gtk_gl_area_set_scanout_mode(vc, false);
    215        return;
    216    }
    217
    218    gtk_gl_area_set_scanout_mode(vc, true);
    219    egl_fb_setup_for_tex(&vc->gfx.guest_fb, backing_width, backing_height,
    220                         backing_id, false);
    221}
    222
    223void gd_gl_area_scanout_disable(DisplayChangeListener *dcl)
    224{
    225    VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
    226
    227    gtk_gl_area_set_scanout_mode(vc, false);
    228}
    229
    230void gd_gl_area_scanout_flush(DisplayChangeListener *dcl,
    231                          uint32_t x, uint32_t y, uint32_t w, uint32_t h)
    232{
    233    VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
    234
    235    if (vc->gfx.guest_fb.dmabuf) {
    236        graphic_hw_gl_block(vc->gfx.dcl.con, true);
    237    }
    238    gtk_gl_area_queue_render(GTK_GL_AREA(vc->gfx.drawing_area));
    239}
    240
    241void gd_gl_area_scanout_dmabuf(DisplayChangeListener *dcl,
    242                               QemuDmaBuf *dmabuf)
    243{
    244#ifdef CONFIG_GBM
    245    VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
    246
    247    gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
    248    egl_dmabuf_import_texture(dmabuf);
    249    if (!dmabuf->texture) {
    250        return;
    251    }
    252
    253    gd_gl_area_scanout_texture(dcl, dmabuf->texture,
    254                               false, dmabuf->width, dmabuf->height,
    255                               0, 0, dmabuf->width, dmabuf->height);
    256
    257    if (dmabuf->allow_fences) {
    258        vc->gfx.guest_fb.dmabuf = dmabuf;
    259    }
    260#endif
    261}
    262
    263void gtk_gl_area_init(void)
    264{
    265    display_opengl = 1;
    266}
    267
    268int gd_gl_area_make_current(DisplayChangeListener *dcl,
    269                            QEMUGLContext ctx)
    270{
    271    gdk_gl_context_make_current(ctx);
    272    return 0;
    273}