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vo_opengl: angle: enable DirectComposition 

This avoids a copy of the video image and lowers vsync jitter. Since
there are now two options to add to the window_attribs list, it has been
made dynamic.
This commit is contained in:
James Ross-Gowan 2016-05-29 01:21:29 +10:00
parent 9f42760538
commit 9eccedf447
1 changed files with 22 additions and 10 deletions
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32
video/out/opengl/context_angle.c
View File

@ -158,6 +158,10 @@ static int angle_init(struct MPGLContext *ctx, int flags)
goto fail;
}
const char *exts = eglQueryString(p->egl_display, EGL_EXTENSIONS);
if (exts)
MP_DBG(ctx->vo, "EGL extensions: %s\n", exts);
eglBindAPI(EGL_OPENGL_ES_API);
if (eglGetError() != EGL_SUCCESS) {
MP_FATAL(vo, "Couldn't bind GLES API\n");
@ -168,24 +172,37 @@ static int angle_init(struct MPGLContext *ctx, int flags)
if (!config)
goto fail;
int window_attribs_len = 0;
EGLint *window_attribs = NULL;
EGLint window_attribs_flip[] = {
EGL_SURFACE_ORIENTATION_ANGLE, EGL_SURFACE_ORIENTATION_INVERT_Y_ANGLE,
EGL_NONE
};
EGLint flip_val;
if (eglGetConfigAttrib(p->egl_display, config,
EGL_OPTIMAL_SURFACE_ORIENTATION_ANGLE, &flip_val))
{
if (flip_val == EGL_SURFACE_ORIENTATION_INVERT_Y_ANGLE) {
window_attribs = window_attribs_flip;
MP_TARRAY_APPEND(NULL, window_attribs, window_attribs_len,
EGL_SURFACE_ORIENTATION_ANGLE);
MP_TARRAY_APPEND(NULL, window_attribs, window_attribs_len,
EGL_SURFACE_ORIENTATION_INVERT_Y_ANGLE);
ctx->flip_v = true;
MP_VERBOSE(vo, "Rendering flipped.\n");
}
}
// EGL_DIRECT_COMPOSITION_ANGLE enables the use of flip-mode present, which
// avoids a copy of the video image and lowers vsync jitter, though the
// extension is only present on Windows 8 and up.
if (strstr(exts, "EGL_ANGLE_direct_composition")) {
MP_TARRAY_APPEND(NULL, window_attribs, window_attribs_len,
EGL_DIRECT_COMPOSITION_ANGLE);
MP_TARRAY_APPEND(NULL, window_attribs, window_attribs_len, EGL_TRUE);
MP_VERBOSE(vo, "Using DirectComposition.\n");
}
MP_TARRAY_APPEND(NULL, window_attribs, window_attribs_len, EGL_NONE);
p->egl_surface = eglCreateWindowSurface(p->egl_display, config,
vo_w32_hwnd(vo), window_attribs);
talloc_free(window_attribs);
if (p->egl_surface == EGL_NO_SURFACE) {
MP_FATAL(ctx->vo, "Could not create EGL surface!\n");
goto fail;
@ -199,11 +216,6 @@ static int angle_init(struct MPGLContext *ctx, int flags)
}
mpgl_load_functions(ctx->gl, get_proc_address, NULL, vo->log);
const char *exts = eglQueryString(p->egl_display, EGL_EXTENSIONS);
if (exts)
MP_DBG(ctx->vo, "EGL extensions: %s\n", exts);
return 0;
fail: