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     uint32_t width, height, texture;
  89
  90     egl_dmabuf_import_texture(dmabuf);
  91     texture = qemu_dmabuf_get_texture(dmabuf);
  92     if (!texture) {
  93         return;
  94     }
  95
  96     width = qemu_dmabuf_get_width(dmabuf);
  97     height = qemu_dmabuf_get_height(dmabuf);
  98
  99     egl_scanout_texture(dcl, texture, false, width, height, 0, 0,
 100                         width, height, NULL);
 101 }
 102
 103 static void egl_cursor_dmabuf(DisplayChangeListener *dcl,
 104                               QemuDmaBuf *dmabuf, bool have_hot,
 105                               uint32_t hot_x, uint32_t hot_y)
 106 {
 107     uint32_t width, height, texture;
 108     egl_dpy *edpy = container_of(dcl, egl_dpy, dcl);
 109
 110     if (dmabuf) {
 111         egl_dmabuf_import_texture(dmabuf);
 112         texture = qemu_dmabuf_get_texture(dmabuf);
 113         if (!texture) {
 114             return;
 115         }
 116
 117         width = qemu_dmabuf_get_width(dmabuf);
 118         height = qemu_dmabuf_get_height(dmabuf);
 119         egl_fb_setup_for_tex(&edpy->cursor_fb, width, height, texture, false);
 120     } else {
 121         egl_fb_destroy(&edpy->cursor_fb);
 122     }
 123 }
 124
 125 static void egl_release_dmabuf(DisplayChangeListener *dcl,
 126                                QemuDmaBuf *dmabuf)
 127 {
 128     egl_dmabuf_release_texture(dmabuf);
 129 }
 130
 131 #endif
 132
 133 static void egl_cursor_position(DisplayChangeListener *dcl,
 134                                 uint32_t pos_x, uint32_t pos_y)
 135 {
 136     egl_dpy *edpy = container_of(dcl, egl_dpy, dcl);
 137
 138     edpy->pos_x = pos_x;
 139     edpy->pos_y = pos_y;
 140 }
 141
 142 static void egl_scanout_flush(DisplayChangeListener *dcl,
 143                               uint32_t x, uint32_t y,
 144                               uint32_t w, uint32_t h)
 145 {
 146     egl_dpy *edpy = container_of(dcl, egl_dpy, dcl);
 147
 148     if (!edpy->guest_fb.texture || !edpy->ds) {
 149         return;
 150     }
 151     assert(surface_format(edpy->ds) == PIXMAN_x8r8g8b8);
 152
 153     if (edpy->cursor_fb.texture) {
 154         /* have cursor -> render using textures */
 155         egl_texture_blit(edpy->gls, &edpy->blit_fb, &edpy->guest_fb,
 156                          !edpy->y_0_top);
 157         egl_texture_blend(edpy->gls, &edpy->blit_fb, &edpy->cursor_fb,
 158                           !edpy->y_0_top, edpy->pos_x, edpy->pos_y,
 159                           1.0, 1.0);
 160     } else {
 161         /* no cursor -> use simple framebuffer blit */
 162         egl_fb_blit(&edpy->blit_fb, &edpy->guest_fb, edpy->y_0_top);
 163     }
 164
 165     egl_fb_read(edpy->ds, &edpy->blit_fb);
 166     dpy_gfx_update(edpy->dcl.con, x, y, w, h);
 167 }
 168
 169 static const DisplayChangeListenerOps egl_ops = {
 170     .dpy_name                = "egl-headless",
 171     .dpy_refresh             = egl_refresh,
 172     .dpy_gfx_update          = egl_gfx_update,
 173     .dpy_gfx_switch          = egl_gfx_switch,
 174
 175     .dpy_gl_scanout_disable  = egl_scanout_disable,
 176     .dpy_gl_scanout_texture  = egl_scanout_texture,
 177 #ifdef CONFIG_GBM
 178     .dpy_gl_scanout_dmabuf   = egl_scanout_dmabuf,
 179     .dpy_gl_cursor_dmabuf    = egl_cursor_dmabuf,
 180     .dpy_gl_release_dmabuf   = egl_release_dmabuf,
 181 #endif
 182     .dpy_gl_cursor_position  = egl_cursor_position,
 183     .dpy_gl_update           = egl_scanout_flush,
 184 };
 185
 186 static bool
 187 egl_is_compatible_dcl(DisplayGLCtx *dgc,
 188                       DisplayChangeListener *dcl)
 189 {
 190     if (!dcl->ops->dpy_gl_update) {
 191         /*
 192          * egl-headless is compatible with all 2d listeners, as it blits the GL
 193          * updates on the 2d console surface.
 194          */
 195         return true;
 196     }
 197
 198     return dcl->ops == &egl_ops;
 199 }
 200
 201 static const DisplayGLCtxOps eglctx_ops = {
 202     .dpy_gl_ctx_is_compatible_dcl = egl_is_compatible_dcl,
 203     .dpy_gl_ctx_create       = egl_create_context,
 204     .dpy_gl_ctx_destroy      = qemu_egl_destroy_context,
 205     .dpy_gl_ctx_make_current = qemu_egl_make_context_current,
 206 };
 207
 208 static void early_egl_headless_init(DisplayOptions *opts)
 209 {
 210     DisplayGLMode mode = DISPLAY_GL_MODE_ON;
 211
 212     if (opts->has_gl) {
 213         mode = opts->gl;
 214     }
 215
 216     egl_init(opts->u.egl_headless.rendernode, mode, &error_fatal);
 217 }
 218
 219 static void egl_headless_init(DisplayState *ds, DisplayOptions *opts)
 220 {
 221     QemuConsole *con;
 222     egl_dpy *edpy;
 223     int idx;
 224
 225     for (idx = 0;; idx++) {
 226         DisplayGLCtx *ctx;
 227
 228         con = qemu_console_lookup_by_index(idx);
 229         if (!con || !qemu_console_is_graphic(con)) {
 230             break;
 231         }
 232
 233         edpy = g_new0(egl_dpy, 1);
 234         edpy->dcl.con = con;
 235         edpy->dcl.ops = &egl_ops;
 236         edpy->gls = qemu_gl_init_shader();
 237         ctx = g_new0(DisplayGLCtx, 1);
 238         ctx->ops = &eglctx_ops;
 239         qemu_console_set_display_gl_ctx(con, ctx);
 240         register_displaychangelistener(&edpy->dcl);
 241     }
 242 }
 243
 244 static QemuDisplay qemu_display_egl = {
 245     .type       = DISPLAY_TYPE_EGL_HEADLESS,
 246     .early_init = early_egl_headless_init,
 247     .init       = egl_headless_init,
 248 };
 249
 250 static void register_egl(void)
 251 {
 252     qemu_display_register(&qemu_display_egl);
 253 }
 254
 255 type_init(register_egl);
 256
 257 module_dep("ui-opengl");