1 files changed, 96 insertions, 0 deletions
diff --git a/video/out/opengl/egl_helpers.c b/video/out/opengl/egl_helpers.c
index 7e236f1da9..b06e6a79af 100644
--- a/video/out/opengl/egl_helpers.c
+++ b/video/out/opengl/egl_helpers.c
@@ -15,6 +15,102 @@
  * License along with mpv.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+#include "common/common.h"
+
 #include "egl_helpers.h"
 #include "common.h"
+#include "context.h"
+
+// EGL 1.5
+#ifndef EGL_CONTEXT_OPENGL_PROFILE_MASK
+#define EGL_CONTEXT_OPENGL_PROFILE_MASK         0x30FD
+#define EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT     0x00000001
+#endif
+
+static bool create_context(EGLDisplay display, struct mp_log *log, int msgl,
+                           int vo_flags,
+                           EGLContext *out_context, EGLConfig *out_config)
+{
+    bool es = vo_flags & VOFLAG_GLES;
+
+    mp_msg(log, MSGL_V, "Trying to create %s context.\n", es ? "GLES" : "GL");
+
+    if (!eglBindAPI(es ? EGL_OPENGL_ES_API : EGL_OPENGL_API)) {
+        mp_msg(log, msgl, "Could not bind API!\n");
+        return false;
+    }
+
+    EGLint attributes[] = {
+        EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
+        EGL_RED_SIZE, 1,
+        EGL_GREEN_SIZE, 1,
+        EGL_BLUE_SIZE, 1,
+        EGL_ALPHA_SIZE, (vo_flags & VOFLAG_ALPHA ) ? 1 : 0,
+        EGL_DEPTH_SIZE, 0,
+        EGL_RENDERABLE_TYPE, es ? EGL_OPENGL_ES2_BIT : EGL_OPENGL_BIT,
+        EGL_NONE
+    };
+
+    EGLint config_count;
+    EGLConfig config;
+
+    eglChooseConfig(display, attributes, &config, 1, &config_count);
+
+    if (!config_count) {
+        mp_msg(log, msgl, "Could not find EGL configuration!\n");
+        return false;
+    }
+
+    EGLint context_attributes[] = {
+        // aka EGL_CONTEXT_MAJOR_VERSION_KHR
+        EGL_CONTEXT_CLIENT_VERSION, es ? 2 : 3,
+        EGL_NONE, EGL_NONE,
+        EGL_NONE
+    };
+
+    if (!es) {
+        context_attributes[2] = EGL_CONTEXT_OPENGL_PROFILE_MASK;
+        context_attributes[3] = EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT;
+    }
+
+    EGLContext *ctx = eglCreateContext(display, config,
+                                       EGL_NO_CONTEXT, context_attributes);
+
+    if (!ctx) {
+        mp_msg(log, msgl, "Could not create EGL context!\n");
+        return false;
+    }
+
+    *out_context = ctx;
+    *out_config = config;
+    return true;
+}
+
+// Create a context and return it and the config it was created with. If it
+// returns false, the out_* pointers are set to NULL.
+// vo_flags is a combination of VOFLAG_* values.
+bool mpegl_create_context(EGLDisplay display, struct mp_log *log, int vo_flags,
+                          EGLContext *out_context, EGLConfig *out_config)
+{
+    *out_context = NULL;
+    *out_config = NULL;
+
+    int clean_flags = vo_flags & ~(unsigned)(VOFLAG_GLES | VOFLAG_NO_GLES);
+    int msgl = vo_flags & VOFLAG_PROBING ? MSGL_V : MSGL_FATAL;
+
+    if (!(vo_flags & VOFLAG_GLES)) {
+        if (create_context(display, log, msgl, clean_flags,
+                           out_context, out_config))
+            return true;
+    }
+
+    if (!(vo_flags & VOFLAG_NO_GLES)) {
+        if (create_context(display, log, msgl, clean_flags | VOFLAG_GLES,
+                           out_context, out_config))
+            return true;
+    }
+
+    mp_msg(log, msgl, "Could not create a GL context.\n");
+    return false;
+}