ui/egl-headless.c

   1 #include "qemu/osdep.h"
   2 #include "qemu/error-report.h"
   3 #include "qemu/module.h"
   4 #include "qapi/error.h"
   5 #include "ui/console.h"
   6 #include "ui/egl-helpers.h"
   7 #include "ui/egl-context.h"
   8 #include "ui/shader.h"
   9
  10 typedef struct egl_dpy {
  11     DisplayChangeListener dcl;
  12     DisplaySurface *ds;
  13     QemuGLShader *gls;
  14     egl_fb guest_fb;
  15     egl_fb cursor_fb;
  16     egl_fb blit_fb;
  17     bool y_0_top;
  18     uint32_t pos_x;
  19     uint32_t pos_y;
  20 } egl_dpy;
  21
  22 /* ------------------------------------------------------------------ */
  23
  24 static void egl_refresh(DisplayChangeListener *dcl)
  25 {
  26     graphic_hw_update(dcl->con);
  27 }
  28
  29 static void egl_gfx_update(DisplayChangeListener *dcl,
  30                            int x, int y, int w, int h)
  31 {
  32 }
  33
  34 static void egl_gfx_switch(DisplayChangeListener *dcl,
  35                            struct DisplaySurface *new_surface)
  36 {
  37     egl_dpy *edpy = container_of(dcl, egl_dpy, dcl);
  38
  39     edpy->ds = new_surface;
  40 }
  41
  42 static QEMUGLContext egl_create_context(DisplayGLCtx *dgc,
  43                                         QEMUGLParams *params)
  44 {
  45     eglMakeCurrent(qemu_egl_display, EGL_NO_SURFACE, EGL_NO_SURFACE,
  46                    qemu_egl_rn_ctx);
  47     return qemu_egl_create_context(dgc, params);
  48 }
  49
  50 static void egl_scanout_disable(DisplayChangeListener *dcl)
  51 {
  52     egl_dpy *edpy = container_of(dcl, egl_dpy, dcl);
  53
  54     egl_fb_destroy(&edpy->guest_fb);
  55     egl_fb_destroy(&edpy->blit_fb);
  56 }
  57
  58 static void egl_scanout_texture(DisplayChangeListener *dcl,
  59                                 uint32_t backing_id,
  60                                 bool backing_y_0_top,
  61                                 uint32_t backing_width,
  62                                 uint32_t backing_height,
  63                                 uint32_t x, uint32_t y,
  64                                 uint32_t w, uint32_t h)
  65 {
  66     egl_dpy *edpy = container_of(dcl, egl_dpy, dcl);
  67
  68     edpy->y_0_top = backing_y_0_top;
  69
  70     /* source framebuffer */
  71     egl_fb_setup_for_tex(&edpy->guest_fb,
  72                          backing_width, backing_height, backing_id, false);
  73
  74     /* dest framebuffer */
  75     if (edpy->blit_fb.width  != backing_width ||
  76         edpy->blit_fb.height != backing_height) {
  77         egl_fb_destroy(&edpy->blit_fb);
  78         egl_fb_setup_new_tex(&edpy->blit_fb, backing_width, backing_height);
  79     }
  80 }
  81
  82 #ifdef CONFIG_GBM
  83
  84 static void egl_scanout_dmabuf(DisplayChangeListener *dcl,
  85                                QemuDmaBuf *dmabuf)
  86 {
  87     egl_dmabuf_import_texture(dmabuf);
  88     if (!dmabuf->texture) {
  89         return;
  90     }
  91
  92     egl_scanout_texture(dcl, dmabuf->texture,
  93                         false, dmabuf->width, dmabuf->height,
  94                         0, 0, dmabuf->width, dmabuf->height);
  95 }
  96
  97 static void egl_cursor_dmabuf(DisplayChangeListener *dcl,
  98                               QemuDmaBuf *dmabuf, bool have_hot,
  99                               uint32_t hot_x, uint32_t hot_y)
 100 {
 101     egl_dpy *edpy = container_of(dcl, egl_dpy, dcl);
 102
 103     if (dmabuf) {
 104         egl_dmabuf_import_texture(dmabuf);
 105         if (!dmabuf->texture) {
 106             return;
 107         }
 108         egl_fb_setup_for_tex(&edpy->cursor_fb, dmabuf->width, dmabuf->height,
 109                              dmabuf->texture, false);
 110     } else {
 111         egl_fb_destroy(&edpy->cursor_fb);
 112     }
 113 }
 114
 115 static void egl_release_dmabuf(DisplayChangeListener *dcl,
 116                                QemuDmaBuf *dmabuf)
 117 {
 118     egl_dmabuf_release_texture(dmabuf);
 119 }
 120
 121 #endif
 122
 123 static void egl_cursor_position(DisplayChangeListener *dcl,
 124                                 uint32_t pos_x, uint32_t pos_y)
 125 {
 126     egl_dpy *edpy = container_of(dcl, egl_dpy, dcl);
 127
 128     edpy->pos_x = pos_x;
 129     edpy->pos_y = pos_y;
 130 }
 131
 132 static void egl_scanout_flush(DisplayChangeListener *dcl,
 133                               uint32_t x, uint32_t y,
 134                               uint32_t w, uint32_t h)
 135 {
 136     egl_dpy *edpy = container_of(dcl, egl_dpy, dcl);
 137
 138     if (!edpy->guest_fb.texture || !edpy->ds) {
 139         return;
 140     }
 141     assert(surface_format(edpy->ds) == PIXMAN_x8r8g8b8);
 142
 143     if (edpy->cursor_fb.texture) {
 144         /* have cursor -> render using textures */
 145         egl_texture_blit(edpy->gls, &edpy->blit_fb, &edpy->guest_fb,
 146                          !edpy->y_0_top);
 147         egl_texture_blend(edpy->gls, &edpy->blit_fb, &edpy->cursor_fb,
 148                           !edpy->y_0_top, edpy->pos_x, edpy->pos_y,
 149                           1.0, 1.0);
 150     } else {
 151         /* no cursor -> use simple framebuffer blit */
 152         egl_fb_blit(&edpy->blit_fb, &edpy->guest_fb, edpy->y_0_top);
 153     }
 154
 155     egl_fb_read(edpy->ds, &edpy->blit_fb);
 156     dpy_gfx_update(edpy->dcl.con, x, y, w, h);
 157 }
 158
 159 static const DisplayChangeListenerOps egl_ops = {
 160     .dpy_name                = "egl-headless",
 161     .dpy_refresh             = egl_refresh,
 162     .dpy_gfx_update          = egl_gfx_update,
 163     .dpy_gfx_switch          = egl_gfx_switch,
 164
 165     .dpy_gl_scanout_disable  = egl_scanout_disable,
 166     .dpy_gl_scanout_texture  = egl_scanout_texture,
 167 #ifdef CONFIG_GBM
 168     .dpy_gl_scanout_dmabuf   = egl_scanout_dmabuf,
 169     .dpy_gl_cursor_dmabuf    = egl_cursor_dmabuf,
 170     .dpy_gl_release_dmabuf   = egl_release_dmabuf,
 171 #endif
 172     .dpy_gl_cursor_position  = egl_cursor_position,
 173     .dpy_gl_update           = egl_scanout_flush,
 174 };
 175
 176 static bool
 177 egl_is_compatible_dcl(DisplayGLCtx *dgc,
 178                       DisplayChangeListener *dcl)
 179 {
 180     if (!dcl->ops->dpy_gl_update) {
 181         /*
 182          * egl-headless is compatible with all 2d listeners, as it blits the GL
 183          * updates on the 2d console surface.
 184          */
 185         return true;
 186     }
 187
 188     return dcl->ops == &egl_ops;
 189 }
 190
 191 static const DisplayGLCtxOps eglctx_ops = {
 192     .dpy_gl_ctx_is_compatible_dcl = egl_is_compatible_dcl,
 193     .dpy_gl_ctx_create       = egl_create_context,
 194     .dpy_gl_ctx_destroy      = qemu_egl_destroy_context,
 195     .dpy_gl_ctx_make_current = qemu_egl_make_context_current,
 196 };
 197
 198 static void early_egl_headless_init(DisplayOptions *opts)
 199 {
 200     DisplayGLMode mode = DISPLAYGL_MODE_ON;
 201
 202     if (opts->has_gl) {
 203         mode = opts->gl;
 204     }
 205
 206     egl_init(opts->u.egl_headless.rendernode, mode, &error_fatal);
 207 }
 208
 209 static void egl_headless_init(DisplayState *ds, DisplayOptions *opts)
 210 {
 211     QemuConsole *con;
 212     egl_dpy *edpy;
 213     int idx;
 214
 215     for (idx = 0;; idx++) {
 216         DisplayGLCtx *ctx;
 217
 218         con = qemu_console_lookup_by_index(idx);
 219         if (!con || !qemu_console_is_graphic(con)) {
 220             break;
 221         }
 222
 223         edpy = g_new0(egl_dpy, 1);
 224         edpy->dcl.con = con;
 225         edpy->dcl.ops = &egl_ops;
 226         edpy->gls = qemu_gl_init_shader();
 227         ctx = g_new0(DisplayGLCtx, 1);
 228         ctx->ops = &eglctx_ops;
 229         qemu_console_set_display_gl_ctx(con, ctx);
 230         register_displaychangelistener(&edpy->dcl);
 231     }
 232 }
 233
 234 static QemuDisplay qemu_display_egl = {
 235     .type       = DISPLAY_TYPE_EGL_HEADLESS,
 236     .early_init = early_egl_headless_init,
 237     .init       = egl_headless_init,
 238 };
 239
 240 static void register_egl(void)
 241 {
 242     qemu_display_register(&qemu_display_egl);
 243 }
 244
 245 type_init(register_egl);
 246
 247 module_dep("ui-opengl");