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egl: implement selecting opengl3 contexts

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This commit is contained in:
Matthew Waters 2016-01-28 16:39:07 +11:00
parent f524419315
commit 49199b03ac
4 changed files with 217 additions and 58 deletions
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257
gst-libs/gst/gl/egl/gstglcontext_egl.c
View file

@ -30,6 +30,7 @@
#include "gstglcontext_egl.h"
#include <gst/gl/egl/gstegl.h>
#include "../utils/opengl_versions.h"
#if GST_GL_HAVE_WINDOW_X11
#include "../x11/gstglwindow_x11.h"
@ -171,19 +172,36 @@ gst_gl_context_egl_choose_format (GstGLContext * context, GError ** error)
}
static gboolean
gst_gl_context_egl_choose_config (GstGLContextEGL * egl,
GstGLContext * other_context, GError ** error)
gst_gl_context_egl_choose_config (GstGLContextEGL * egl, GstGLAPI gl_api,
gint major, GError ** error)
{
gboolean create_context;
EGLint numConfigs;
gint i = 0;
EGLint config_attrib[20];
create_context =
gst_gl_check_extension ("EGL_KHR_create_context", egl->egl_exts);
/* silence unused warnings */
(void) create_context;
config_attrib[i++] = EGL_SURFACE_TYPE;
config_attrib[i++] = EGL_WINDOW_BIT;
config_attrib[i++] = EGL_RENDERABLE_TYPE;
if (egl->gl_api & GST_GL_API_GLES2)
config_attrib[i++] = EGL_OPENGL_ES2_BIT;
else
if (gl_api & GST_GL_API_GLES2) {
if (major == 3) {
#if defined(EGL_KHR_create_context)
if (create_context) {
config_attrib[i++] = EGL_OPENGL_ES3_BIT_KHR;
} else
#endif
{
return FALSE;
}
} else {
config_attrib[i++] = EGL_OPENGL_ES2_BIT;
}
} else
config_attrib[i++] = EGL_OPENGL_BIT;
#if defined(USE_EGL_RPI) && GST_GL_HAVE_WINDOW_WAYLAND
/* The configurations with a=0 seems to be buggy whereas
@ -218,6 +236,71 @@ failure:
return FALSE;
}
static EGLContext
_create_context_with_flags (GstGLContextEGL * egl, EGLContext share_context,
GstGLAPI gl_api, gint major, gint minor, gint contextFlags,
gint profileMask)
{
gboolean create_context;
#define N_ATTRIBS 20
gint attribs[N_ATTRIBS];
gint n = 0;
/* fail creation of apis/versions/flags that require EGL_KHR_create_context
* if the extension doesn't exist, namely:0
*
* - profile mask
* - context flags
* - GL3 > 3.1
* - GLES2 && minor > 0
*/
create_context =
gst_gl_check_extension ("EGL_KHR_create_context", egl->egl_exts);
(void) create_context;
if (!create_context && (profileMask || contextFlags
|| ((gl_api & GST_GL_API_OPENGL3)
&& GST_GL_CHECK_GL_VERSION (major, minor, 3, 2))
|| ((gl_api & GST_GL_API_GLES2) && minor > 0))) {
return 0;
}
GST_DEBUG_OBJECT (egl, "attempting to create OpenGL%s context version %d.%d "
"flags %x profile %x", gl_api & GST_GL_API_GLES2 ? " ES" : "", major,
minor, contextFlags, profileMask);
#if defined(EGL_KHR_create_context)
if (create_context) {
if (major) {
attribs[n++] = EGL_CONTEXT_MAJOR_VERSION_KHR;
attribs[n++] = major;
}
if (minor) {
attribs[n++] = EGL_CONTEXT_MINOR_VERSION_KHR;
attribs[n++] = minor;
}
if (contextFlags) {
attribs[n++] = EGL_CONTEXT_FLAGS_KHR;
attribs[n++] = contextFlags;
}
if (profileMask) {
attribs[n++] = EGL_CONTEXT_OPENGL_PROFILE_MASK_KHR;
attribs[n++] = profileMask;
}
} else
#endif
{
attribs[n++] = EGL_CONTEXT_CLIENT_VERSION;
attribs[n++] = major;
}
attribs[n++] = EGL_NONE;
g_assert (n < N_ATTRIBS);
#undef N_ATTRIBS
return eglCreateContext (egl->egl_display, egl->egl_config, share_context,
attribs);
}
static gboolean
gst_gl_context_egl_create_context (GstGLContext * context,
GstGLAPI gl_api, GstGLContext * other_context, GError ** error)
@ -225,11 +308,8 @@ gst_gl_context_egl_create_context (GstGLContext * context,
GstGLContextEGL *egl;
GstGLWindow *window = NULL;
EGLNativeWindowType window_handle = (EGLNativeWindowType) 0;
gint i = 0;
EGLint context_attrib[5];
EGLint majorVersion;
EGLint minorVersion;
const gchar *egl_exts;
gboolean need_surface = TRUE;
guintptr external_gl_context = 0;
GstGLDisplay *display;
@ -249,7 +329,8 @@ gst_gl_context_egl_create_context (GstGLContext * context,
external_gl_context = gst_gl_context_get_gl_context (other_context);
}
if ((gl_api & (GST_GL_API_OPENGL | GST_GL_API_GLES2)) == GST_GL_API_NONE) {
if ((gl_api & (GST_GL_API_OPENGL | GST_GL_API_OPENGL3 | GST_GL_API_GLES2)) ==
GST_GL_API_NONE) {
g_set_error (error, GST_GL_CONTEXT_ERROR, GST_GL_CONTEXT_ERROR_WRONG_API,
"EGL supports opengl or gles2");
goto failure;
@ -291,7 +372,12 @@ gst_gl_context_egl_create_context (GstGLContext * context,
goto failure;
}
if (gl_api & GST_GL_API_OPENGL) {
egl->egl_exts = eglQueryString (egl->egl_display, EGL_EXTENSIONS);
if (gl_api & (GST_GL_API_OPENGL | GST_GL_API_OPENGL3)) {
GstGLAPI chosen_gl_api = 0;
gint i;
/* egl + opengl only available with EGL 1.4+ */
if (majorVersion == 1 && minorVersion <= 3) {
if ((gl_api & ~GST_GL_API_OPENGL) == GST_GL_API_NONE) {
@ -321,9 +407,66 @@ gst_gl_context_egl_create_context (GstGLContext * context,
goto failure;
}
GST_INFO ("Using OpenGL");
egl->gl_api = GST_GL_API_OPENGL;
GST_INFO ("Bound OpenGL");
/* api, version only matters for gles */
if (!gst_gl_context_egl_choose_config (egl, GST_GL_API_OPENGL, 0, error)) {
g_assert (error == NULL || *error != NULL);
goto failure;
}
for (i = 0; i < G_N_ELEMENTS (opengl_versions); i++) {
gint profileMask = 0;
gint contextFlags = 0;
if (GST_GL_CHECK_GL_VERSION (opengl_versions[i].major,
opengl_versions[i].minor, 3, 2)) {
/* skip gl3 contexts if requested */
if ((gl_api & GST_GL_API_OPENGL3) == 0)
continue;
chosen_gl_api = GST_GL_API_OPENGL3;
#if defined(EGL_KHR_create_context)
profileMask |= EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR;
contextFlags |= EGL_CONTEXT_OPENGL_DEBUG_BIT_KHR;
#endif
} else if (opengl_versions[i].major == 3 && opengl_versions[i].minor == 1) {
/* skip 3.1, the implementation is free to give us either a core or a
* compatibility context (we have no say) */
continue;
} else {
/* skip legacy contexts if requested */
if ((gl_api & GST_GL_API_OPENGL) == 0)
continue;
chosen_gl_api = GST_GL_API_OPENGL;
}
egl->egl_context =
_create_context_with_flags (egl, (EGLContext) external_gl_context,
chosen_gl_api, opengl_versions[i].major,
opengl_versions[i].minor, contextFlags, profileMask);
if (egl->egl_context)
break;
#if defined(EGL_KHR_create_context)
profileMask &= ~EGL_CONTEXT_OPENGL_DEBUG_BIT_KHR;
egl->egl_context =
_create_context_with_flags (egl, (EGLContext) external_gl_context,
chosen_gl_api, opengl_versions[i].major,
opengl_versions[i].minor, contextFlags, profileMask);
if (egl->egl_context)
break;
#endif
}
egl->gl_api = chosen_gl_api;
} else if (gl_api & GST_GL_API_GLES2) {
gint i;
try_gles2:
if (!eglBindAPI (EGL_OPENGL_ES_API)) {
g_set_error (error, GST_GL_CONTEXT_ERROR, GST_GL_CONTEXT_ERROR_FAILED,
@ -332,52 +475,43 @@ gst_gl_context_egl_create_context (GstGLContext * context,
goto failure;
}
GST_INFO ("Using OpenGL|ES 2.0");
GST_INFO ("Bound OpenGL|ES");
for (i = 0; i < G_N_ELEMENTS (gles2_versions); i++) {
gint profileMask = 0;
gint contextFlags = 0;
if (!gst_gl_context_egl_choose_config (egl, GST_GL_API_GLES2,
gles2_versions[i].major, error)) {
continue;
}
#if defined(EGL_KHR_create_context)
/* try a debug context */
contextFlags |= EGL_CONTEXT_OPENGL_DEBUG_BIT_KHR;
egl->egl_context =
_create_context_with_flags (egl, (EGLContext) external_gl_context,
GST_GL_API_GLES2, gles2_versions[i].major,
gles2_versions[i].minor, contextFlags, profileMask);
if (egl->egl_context)
break;
/* try without a debug context */
contextFlags &= ~EGL_CONTEXT_OPENGL_DEBUG_BIT_KHR;
#endif
egl->egl_context =
_create_context_with_flags (egl, (EGLContext) external_gl_context,
GST_GL_API_GLES2, gles2_versions[i].major,
gles2_versions[i].minor, contextFlags, profileMask);
if (egl->egl_context)
break;
}
egl->gl_api = GST_GL_API_GLES2;
}
if (!gst_gl_context_egl_choose_config (egl, other_context, error)) {
g_assert (error == NULL || *error != NULL);
goto failure;
}
egl_exts = eglQueryString (egl->egl_display, EGL_EXTENSIONS);
GST_DEBUG ("about to create gl context");
if (egl->gl_api & GST_GL_API_GLES2) {
context_attrib[i++] = EGL_CONTEXT_CLIENT_VERSION;
context_attrib[i++] = 2;
}
#if !defined(GST_DISABLE_GST_DEBUG) && defined(EGL_KHR_create_context)
if (gst_gl_check_extension ("EGL_KHR_create_context", egl_exts)) {
context_attrib[i++] = EGL_CONTEXT_FLAGS_KHR;
context_attrib[i++] = EGL_CONTEXT_OPENGL_DEBUG_BIT_KHR;
}
#endif
context_attrib[i++] = EGL_NONE;
egl->egl_context =
eglCreateContext (egl->egl_display, egl->egl_config,
(EGLContext) external_gl_context, context_attrib);
#ifdef EGL_KHR_create_context
if (egl->egl_context == EGL_NO_CONTEXT && egl->gl_api & GST_GL_API_GLES2
&& eglGetError () != EGL_SUCCESS) {
/* try without EGL_CONTEXT_FLAGS flags as it was added to
* EGL_KHR_create_context for gles contexts */
int i;
for (i = 0; i < G_N_ELEMENTS (context_attrib); i++) {
if (context_attrib[i] == EGL_CONTEXT_FLAGS_KHR ||
context_attrib[i] == EGL_CONTEXT_OPENGL_DEBUG_BIT_KHR)
context_attrib[i] = EGL_NONE;
}
egl->egl_context =
eglCreateContext (egl->egl_display, egl->egl_config,
(EGLContext) external_gl_context, context_attrib);
}
#endif
if (egl->egl_context != EGL_NO_CONTEXT) {
GST_INFO ("gl context created: %" G_GUINTPTR_FORMAT,
(guintptr) egl->egl_context);
@ -427,7 +561,8 @@ gst_gl_context_egl_create_context (GstGLContext * context,
window_handle, NULL);
/* Store window handle for later comparision */
egl->window_handle = window_handle;
} else if (!gst_gl_check_extension ("EGL_KHR_surfaceless_context", egl_exts)) {
} else if (!gst_gl_check_extension ("EGL_KHR_surfaceless_context",
egl->egl_exts)) {
EGLint surface_attrib[7];
gint j = 0;
@ -468,7 +603,7 @@ gst_gl_context_egl_create_context (GstGLContext * context,
"eglCreateImage");
egl->eglDestroyImage = gst_gl_context_get_proc_address (context,
"eglDestroyImage");
} else if (gst_gl_check_extension ("EGL_KHR_image_base", egl_exts)) {
} else if (gst_gl_check_extension ("EGL_KHR_image_base", egl->egl_exts)) {
egl->eglCreateImage = gst_gl_context_get_proc_address (context,
"eglCreateImageKHR");
egl->eglDestroyImage = gst_gl_context_get_proc_address (context,
@ -585,7 +720,13 @@ gst_gl_context_egl_swap_buffers (GstGLContext * context)
egl = GST_GL_CONTEXT_EGL (context);
eglSwapBuffers (egl->egl_display, egl->egl_surface);
if (!eglSwapBuffers (egl->egl_display, egl->egl_surface)) {
EGLint err = eglGetError ();
if (err == EGL_CONTEXT_LOST) {
gst_gl_context_lost_context (context);
}
}
}
static GstGLAPI

2
gst-libs/gst/gl/egl/gstglcontext_egl.h
View file

@ -48,6 +48,8 @@ struct _GstGLContextEGL {
GstGLAPI gl_api;
const gchar *egl_exts;
EGLImageKHR (*eglCreateImage) (EGLDisplay dpy, EGLContext ctx, EGLenum target,
EGLClientBuffer buffer, const EGLint *attrib_list);
EGLBoolean (*eglDestroyImage) (EGLDisplay dpy, EGLImageKHR image);

6
gst-libs/gst/gl/gstglcontext.c
View file

@ -1388,6 +1388,12 @@ failure:
return FALSE;
}
void
gst_gl_context_lost_context (GstGLContext * context)
{
/* do stuff */
}
/**
* gst_gl_context_get_gl_context:
* @context: a #GstGLContext:

10
gst-libs/gst/gl/utils/opengl_versions.h
View file

@ -48,6 +48,16 @@ static const struct { int major, minor; } opengl_versions[] = {
{0, 0} /* end of list */
};
static const struct { int major, minor; } gles2_versions[] = {
{3, 2},
{3, 1},
{3, 0},
{2, 0},
{0, 0} /* end of list */
};
/* *INDENT-ON* */
#endif /* _OPENGL_VERSIONS_H_ */