ui/egl-headless.c

   1 #include "qemu/osdep.h"
   2 #include "qemu/module.h"
   3 #include "sysemu/sysemu.h"
   4 #include "ui/console.h"
   5 #include "ui/egl-helpers.h"
   6 #include "ui/egl-context.h"
   7 #include "ui/shader.h"
   8
   9 typedef struct egl_dpy {
  10     DisplayChangeListener dcl;
  11     DisplaySurface *ds;
  12     QemuGLShader *gls;
  13     egl_fb guest_fb;
  14     egl_fb cursor_fb;
  15     egl_fb blit_fb;
  16     bool y_0_top;
  17     uint32_t pos_x;
  18     uint32_t pos_y;
  19 } egl_dpy;
  20
  21 /* ------------------------------------------------------------------ */
  22
  23 static void egl_refresh(DisplayChangeListener *dcl)
  24 {
  25     graphic_hw_update(dcl->con);
  26 }
  27
  28 static void egl_gfx_update(DisplayChangeListener *dcl,
  29                            int x, int y, int w, int h)
  30 {
  31 }
  32
  33 static void egl_gfx_switch(DisplayChangeListener *dcl,
  34                            struct DisplaySurface *new_surface)
  35 {
  36     egl_dpy *edpy = container_of(dcl, egl_dpy, dcl);
  37
  38     edpy->ds = new_surface;
  39 }
  40
  41 static QEMUGLContext egl_create_context(DisplayChangeListener *dcl,
  42                                         QEMUGLParams *params)
  43 {
  44     eglMakeCurrent(qemu_egl_display, EGL_NO_SURFACE, EGL_NO_SURFACE,
  45                    qemu_egl_rn_ctx);
  46     return qemu_egl_create_context(dcl, params);
  47 }
  48
  49 static void egl_scanout_disable(DisplayChangeListener *dcl)
  50 {
  51     egl_dpy *edpy = container_of(dcl, egl_dpy, dcl);
  52
  53     egl_fb_destroy(&edpy->guest_fb);
  54     egl_fb_destroy(&edpy->blit_fb);
  55 }
  56
  57 static void egl_scanout_texture(DisplayChangeListener *dcl,
  58                                 uint32_t backing_id,
  59                                 bool backing_y_0_top,
  60                                 uint32_t backing_width,
  61                                 uint32_t backing_height,
  62                                 uint32_t x, uint32_t y,
  63                                 uint32_t w, uint32_t h)
  64 {
  65     egl_dpy *edpy = container_of(dcl, egl_dpy, dcl);
  66
  67     edpy->y_0_top = backing_y_0_top;
  68
  69     /* source framebuffer */
  70     egl_fb_setup_for_tex(&edpy->guest_fb,
  71                          backing_width, backing_height, backing_id, false);
  72
  73     /* dest framebuffer */
  74     if (edpy->blit_fb.width  != backing_width ||
  75         edpy->blit_fb.height != backing_height) {
  76         egl_fb_destroy(&edpy->blit_fb);
  77         egl_fb_setup_new_tex(&edpy->blit_fb, backing_width, backing_height);
  78     }
  79 }
  80
  81 static void egl_scanout_dmabuf(DisplayChangeListener *dcl,
  82                                QemuDmaBuf *dmabuf)
  83 {
  84     egl_dmabuf_import_texture(dmabuf);
  85     if (!dmabuf->texture) {
  86         return;
  87     }
  88
  89     egl_scanout_texture(dcl, dmabuf->texture,
  90                         false, dmabuf->width, dmabuf->height,
  91                         0, 0, dmabuf->width, dmabuf->height);
  92 }
  93
  94 static void egl_cursor_dmabuf(DisplayChangeListener *dcl,
  95                               QemuDmaBuf *dmabuf, bool have_hot,
  96                               uint32_t hot_x, uint32_t hot_y)
  97 {
  98     egl_dpy *edpy = container_of(dcl, egl_dpy, dcl);
  99
 100     if (dmabuf) {
 101         egl_dmabuf_import_texture(dmabuf);
 102         if (!dmabuf->texture) {
 103             return;
 104         }
 105         egl_fb_setup_for_tex(&edpy->cursor_fb, dmabuf->width, dmabuf->height,
 106                              dmabuf->texture, false);
 107     } else {
 108         egl_fb_destroy(&edpy->cursor_fb);
 109     }
 110 }
 111
 112 static void egl_cursor_position(DisplayChangeListener *dcl,
 113                                 uint32_t pos_x, uint32_t pos_y)
 114 {
 115     egl_dpy *edpy = container_of(dcl, egl_dpy, dcl);
 116
 117     edpy->pos_x = pos_x;
 118     edpy->pos_y = pos_y;
 119 }
 120
 121 static void egl_release_dmabuf(DisplayChangeListener *dcl,
 122                                QemuDmaBuf *dmabuf)
 123 {
 124     egl_dmabuf_release_texture(dmabuf);
 125 }
 126
 127 static void egl_scanout_flush(DisplayChangeListener *dcl,
 128                               uint32_t x, uint32_t y,
 129                               uint32_t w, uint32_t h)
 130 {
 131     egl_dpy *edpy = container_of(dcl, egl_dpy, dcl);
 132
 133     if (!edpy->guest_fb.texture || !edpy->ds) {
 134         return;
 135     }
 136     assert(surface_width(edpy->ds)  == edpy->guest_fb.width);
 137     assert(surface_height(edpy->ds) == edpy->guest_fb.height);
 138     assert(surface_format(edpy->ds) == PIXMAN_x8r8g8b8);
 139
 140     if (edpy->cursor_fb.texture) {
 141         /* have cursor -> render using textures */
 142         egl_texture_blit(edpy->gls, &edpy->blit_fb, &edpy->guest_fb,
 143                          !edpy->y_0_top);
 144         egl_texture_blend(edpy->gls, &edpy->blit_fb, &edpy->cursor_fb,
 145                           !edpy->y_0_top, edpy->pos_x, edpy->pos_y,
 146                           1.0, 1.0);
 147     } else {
 148         /* no cursor -> use simple framebuffer blit */
 149         egl_fb_blit(&edpy->blit_fb, &edpy->guest_fb, edpy->y_0_top);
 150     }
 151
 152     egl_fb_read(surface_data(edpy->ds), &edpy->blit_fb);
 153     dpy_gfx_update(edpy->dcl.con, x, y, w, h);
 154 }
 155
 156 static const DisplayChangeListenerOps egl_ops = {
 157     .dpy_name                = "egl-headless",
 158     .dpy_refresh             = egl_refresh,
 159     .dpy_gfx_update          = egl_gfx_update,
 160     .dpy_gfx_switch          = egl_gfx_switch,
 161
 162     .dpy_gl_ctx_create       = egl_create_context,
 163     .dpy_gl_ctx_destroy      = qemu_egl_destroy_context,
 164     .dpy_gl_ctx_make_current = qemu_egl_make_context_current,
 165     .dpy_gl_ctx_get_current  = qemu_egl_get_current_context,
 166
 167     .dpy_gl_scanout_disable  = egl_scanout_disable,
 168     .dpy_gl_scanout_texture  = egl_scanout_texture,
 169     .dpy_gl_scanout_dmabuf   = egl_scanout_dmabuf,
 170     .dpy_gl_cursor_dmabuf    = egl_cursor_dmabuf,
 171     .dpy_gl_cursor_position  = egl_cursor_position,
 172     .dpy_gl_release_dmabuf   = egl_release_dmabuf,
 173     .dpy_gl_update           = egl_scanout_flush,
 174 };
 175
 176 static void early_egl_headless_init(DisplayOptions *opts)
 177 {
 178     display_opengl = 1;
 179 }
 180
 181 static void egl_headless_init(DisplayState *ds, DisplayOptions *opts)
 182 {
 183     DisplayGLMode mode = opts->has_gl ? opts->gl : DISPLAYGL_MODE_ON;
 184     QemuConsole *con;
 185     egl_dpy *edpy;
 186     int idx;
 187
 188     if (egl_rendernode_init(opts->u.egl_headless.rendernode, mode) < 0) {
 189         error_report("egl: render node init failed");
 190         exit(1);
 191     }
 192
 193     for (idx = 0;; idx++) {
 194         con = qemu_console_lookup_by_index(idx);
 195         if (!con || !qemu_console_is_graphic(con)) {
 196             break;
 197         }
 198
 199         edpy = g_new0(egl_dpy, 1);
 200         edpy->dcl.con = con;
 201         edpy->dcl.ops = &egl_ops;
 202         edpy->gls = qemu_gl_init_shader();
 203         register_displaychangelistener(&edpy->dcl);
 204     }
 205 }
 206
 207 static QemuDisplay qemu_display_egl = {
 208     .type       = DISPLAY_TYPE_EGL_HEADLESS,
 209     .early_init = early_egl_headless_init,
 210     .init       = egl_headless_init,
 211 };
 212
 213 static void register_egl(void)
 214 {
 215     qemu_display_register(&qemu_display_egl);
 216 }
 217
 218 type_init(register_egl);