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                                 void *d3d_tex2d)
  66 {
  67     egl_dpy *edpy = container_of(dcl, egl_dpy, dcl);
  68
  69     edpy->y_0_top = backing_y_0_top;
  70
  71     /* source framebuffer */
  72     egl_fb_setup_for_tex(&edpy->guest_fb,
  73                          backing_width, backing_height, backing_id, false);
  74
  75     /* dest framebuffer */
  76     if (edpy->blit_fb.width  != backing_width ||
  77         edpy->blit_fb.height != backing_height) {
  78         egl_fb_destroy(&edpy->blit_fb);
  79         egl_fb_setup_new_tex(&edpy->blit_fb, backing_width, backing_height);
  80     }
  81 }
  82
  83 #ifdef CONFIG_GBM
  84
  85 static void egl_scanout_dmabuf(DisplayChangeListener *dcl,
  86                                QemuDmaBuf *dmabuf)
  87 {
  88     egl_dmabuf_import_texture(dmabuf);
  89     if (!dmabuf->texture) {
  90         return;
  91     }
  92
  93     egl_scanout_texture(dcl, dmabuf->texture,
  94                         false, dmabuf->width, dmabuf->height,
  95                         0, 0, dmabuf->width, dmabuf->height, NULL);
  96 }
  97
  98 static void egl_cursor_dmabuf(DisplayChangeListener *dcl,
  99                               QemuDmaBuf *dmabuf, bool have_hot,
 100                               uint32_t hot_x, uint32_t hot_y)
 101 {
 102     egl_dpy *edpy = container_of(dcl, egl_dpy, dcl);
 103
 104     if (dmabuf) {
 105         egl_dmabuf_import_texture(dmabuf);
 106         if (!dmabuf->texture) {
 107             return;
 108         }
 109         egl_fb_setup_for_tex(&edpy->cursor_fb, dmabuf->width, dmabuf->height,
 110                              dmabuf->texture, false);
 111     } else {
 112         egl_fb_destroy(&edpy->cursor_fb);
 113     }
 114 }
 115
 116 static void egl_release_dmabuf(DisplayChangeListener *dcl,
 117                                QemuDmaBuf *dmabuf)
 118 {
 119     egl_dmabuf_release_texture(dmabuf);
 120 }
 121
 122 #endif
 123
 124 static void egl_cursor_position(DisplayChangeListener *dcl,
 125                                 uint32_t pos_x, uint32_t pos_y)
 126 {
 127     egl_dpy *edpy = container_of(dcl, egl_dpy, dcl);
 128
 129     edpy->pos_x = pos_x;
 130     edpy->pos_y = pos_y;
 131 }
 132
 133 static void egl_scanout_flush(DisplayChangeListener *dcl,
 134                               uint32_t x, uint32_t y,
 135                               uint32_t w, uint32_t h)
 136 {
 137     egl_dpy *edpy = container_of(dcl, egl_dpy, dcl);
 138
 139     if (!edpy->guest_fb.texture || !edpy->ds) {
 140         return;
 141     }
 142     assert(surface_format(edpy->ds) == PIXMAN_x8r8g8b8);
 143
 144     if (edpy->cursor_fb.texture) {
 145         /* have cursor -> render using textures */
 146         egl_texture_blit(edpy->gls, &edpy->blit_fb, &edpy->guest_fb,
 147                          !edpy->y_0_top);
 148         egl_texture_blend(edpy->gls, &edpy->blit_fb, &edpy->cursor_fb,
 149                           !edpy->y_0_top, edpy->pos_x, edpy->pos_y,
 150                           1.0, 1.0);
 151     } else {
 152         /* no cursor -> use simple framebuffer blit */
 153         egl_fb_blit(&edpy->blit_fb, &edpy->guest_fb, edpy->y_0_top);
 154     }
 155
 156     egl_fb_read(edpy->ds, &edpy->blit_fb);
 157     dpy_gfx_update(edpy->dcl.con, x, y, w, h);
 158 }
 159
 160 static const DisplayChangeListenerOps egl_ops = {
 161     .dpy_name                = "egl-headless",
 162     .dpy_refresh             = egl_refresh,
 163     .dpy_gfx_update          = egl_gfx_update,
 164     .dpy_gfx_switch          = egl_gfx_switch,
 165
 166     .dpy_gl_scanout_disable  = egl_scanout_disable,
 167     .dpy_gl_scanout_texture  = egl_scanout_texture,
 168 #ifdef CONFIG_GBM
 169     .dpy_gl_scanout_dmabuf   = egl_scanout_dmabuf,
 170     .dpy_gl_cursor_dmabuf    = egl_cursor_dmabuf,
 171     .dpy_gl_release_dmabuf   = egl_release_dmabuf,
 172 #endif
 173     .dpy_gl_cursor_position  = egl_cursor_position,
 174     .dpy_gl_update           = egl_scanout_flush,
 175 };
 176
 177 static bool
 178 egl_is_compatible_dcl(DisplayGLCtx *dgc,
 179                       DisplayChangeListener *dcl)
 180 {
 181     if (!dcl->ops->dpy_gl_update) {
 182         /*
 183          * egl-headless is compatible with all 2d listeners, as it blits the GL
 184          * updates on the 2d console surface.
 185          */
 186         return true;
 187     }
 188
 189     return dcl->ops == &egl_ops;
 190 }
 191
 192 static const DisplayGLCtxOps eglctx_ops = {
 193     .dpy_gl_ctx_is_compatible_dcl = egl_is_compatible_dcl,
 194     .dpy_gl_ctx_create       = egl_create_context,
 195     .dpy_gl_ctx_destroy      = qemu_egl_destroy_context,
 196     .dpy_gl_ctx_make_current = qemu_egl_make_context_current,
 197 };
 198
 199 static void early_egl_headless_init(DisplayOptions *opts)
 200 {
 201     DisplayGLMode mode = DISPLAYGL_MODE_ON;
 202
 203     if (opts->has_gl) {
 204         mode = opts->gl;
 205     }
 206
 207     egl_init(opts->u.egl_headless.rendernode, mode, &error_fatal);
 208 }
 209
 210 static void egl_headless_init(DisplayState *ds, DisplayOptions *opts)
 211 {
 212     QemuConsole *con;
 213     egl_dpy *edpy;
 214     int idx;
 215
 216     for (idx = 0;; idx++) {
 217         DisplayGLCtx *ctx;
 218
 219         con = qemu_console_lookup_by_index(idx);
 220         if (!con || !qemu_console_is_graphic(con)) {
 221             break;
 222         }
 223
 224         edpy = g_new0(egl_dpy, 1);
 225         edpy->dcl.con = con;
 226         edpy->dcl.ops = &egl_ops;
 227         edpy->gls = qemu_gl_init_shader();
 228         ctx = g_new0(DisplayGLCtx, 1);
 229         ctx->ops = &eglctx_ops;
 230         qemu_console_set_display_gl_ctx(con, ctx);
 231         register_displaychangelistener(&edpy->dcl);
 232     }
 233 }
 234
 235 static QemuDisplay qemu_display_egl = {
 236     .type       = DISPLAY_TYPE_EGL_HEADLESS,
 237     .early_init = early_egl_headless_init,
 238     .init       = egl_headless_init,
 239 };
 240
 241 static void register_egl(void)
 242 {
 243     qemu_display_register(&qemu_display_egl);
 244 }
 245
 246 type_init(register_egl);
 247
 248 module_dep("ui-opengl");