ui/egl-helpers.c

   1 #include "qemu/osdep.h"
   2 #include <glob.h>
   3
   4 #include "ui/egl-helpers.h"
   5
   6 EGLDisplay *qemu_egl_display;
   7 EGLConfig qemu_egl_config;
   8
   9 /* ---------------------------------------------------------------------- */
  10
  11 static bool egl_gles;
  12 static int egl_debug;
  13
  14 #define egl_dbg(_x ...)                          \
  15     do {                                         \
  16         if (egl_debug) {                         \
  17             fprintf(stderr, "egl: " _x);         \
  18         }                                        \
  19     } while (0);
  20
  21 /* ---------------------------------------------------------------------- */
  22
  23 EGLSurface qemu_egl_init_surface_x11(EGLContext ectx, Window win)
  24 {
  25     EGLSurface esurface;
  26     EGLBoolean b;
  27
  28     egl_dbg("eglCreateWindowSurface (x11 win id 0x%lx) ...\n",
  29             (unsigned long) win);
  30     esurface = eglCreateWindowSurface(qemu_egl_display,
  31                                       qemu_egl_config,
  32                                       (EGLNativeWindowType)win, NULL);
  33     if (esurface == EGL_NO_SURFACE) {
  34         fprintf(stderr, "egl: eglCreateWindowSurface failed\n");
  35         return NULL;
  36     }
  37
  38     b = eglMakeCurrent(qemu_egl_display, esurface, esurface, ectx);
  39     if (b == EGL_FALSE) {
  40         fprintf(stderr, "egl: eglMakeCurrent failed\n");
  41         return NULL;
  42     }
  43
  44     return esurface;
  45 }
  46
  47 /* ---------------------------------------------------------------------- */
  48
  49 int qemu_egl_init_dpy(EGLNativeDisplayType dpy, bool gles, bool debug)
  50 {
  51     static const EGLint conf_att_gl[] = {
  52         EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
  53         EGL_RENDERABLE_TYPE, EGL_OPENGL_BIT,
  54         EGL_RED_SIZE,   5,
  55         EGL_GREEN_SIZE, 5,
  56         EGL_BLUE_SIZE,  5,
  57         EGL_ALPHA_SIZE, 0,
  58         EGL_NONE,
  59     };
  60     static const EGLint conf_att_gles[] = {
  61         EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
  62         EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
  63         EGL_RED_SIZE,   5,
  64         EGL_GREEN_SIZE, 5,
  65         EGL_BLUE_SIZE,  5,
  66         EGL_ALPHA_SIZE, 0,
  67         EGL_NONE,
  68     };
  69     EGLint major, minor;
  70     EGLBoolean b;
  71     EGLint n;
  72
  73     if (debug) {
  74         egl_debug = 1;
  75         setenv("EGL_LOG_LEVEL", "debug", true);
  76         setenv("LIBGL_DEBUG", "verbose", true);
  77     }
  78
  79     egl_dbg("eglGetDisplay (dpy %p) ...\n", dpy);
  80     qemu_egl_display = eglGetDisplay(dpy);
  81     if (qemu_egl_display == EGL_NO_DISPLAY) {
  82         fprintf(stderr, "egl: eglGetDisplay failed\n");
  83         return -1;
  84     }
  85
  86     egl_dbg("eglInitialize ...\n");
  87     b = eglInitialize(qemu_egl_display, &major, &minor);
  88     if (b == EGL_FALSE) {
  89         fprintf(stderr, "egl: eglInitialize failed\n");
  90         return -1;
  91     }
  92
  93     egl_dbg("eglBindAPI ...\n");
  94     b = eglBindAPI(gles ? EGL_OPENGL_ES_API : EGL_OPENGL_API);
  95     if (b == EGL_FALSE) {
  96         fprintf(stderr, "egl: eglBindAPI failed\n");
  97         return -1;
  98     }
  99
 100     egl_dbg("eglChooseConfig ...\n");
 101     b = eglChooseConfig(qemu_egl_display,
 102                         gles ? conf_att_gles : conf_att_gl,
 103                         &qemu_egl_config, 1, &n);
 104     if (b == EGL_FALSE || n != 1) {
 105         fprintf(stderr, "egl: eglChooseConfig failed\n");
 106         return -1;
 107     }
 108
 109     egl_gles = gles;
 110     return 0;
 111 }
 112
 113 EGLContext qemu_egl_init_ctx(void)
 114 {
 115     static const EGLint ctx_att_gl[] = {
 116         EGL_NONE
 117     };
 118     static const EGLint ctx_att_gles[] = {
 119         EGL_CONTEXT_CLIENT_VERSION, 2,
 120         EGL_NONE
 121     };
 122
 123     EGLContext ectx;
 124     EGLBoolean b;
 125
 126     egl_dbg("eglCreateContext ...\n");
 127     ectx = eglCreateContext(qemu_egl_display, qemu_egl_config, EGL_NO_CONTEXT,
 128                             egl_gles ? ctx_att_gles : ctx_att_gl);
 129     if (ectx == EGL_NO_CONTEXT) {
 130         fprintf(stderr, "egl: eglCreateContext failed\n");
 131         return NULL;
 132     }
 133
 134     b = eglMakeCurrent(qemu_egl_display, EGL_NO_SURFACE, EGL_NO_SURFACE, ectx);
 135     if (b == EGL_FALSE) {
 136         fprintf(stderr, "egl: eglMakeCurrent failed\n");
 137         return NULL;
 138     }
 139
 140     return ectx;
 141 }