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glcontext/wgl: implement gl3 core profile context selection

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This commit is contained in:
Matthew Waters 2015-08-10 15:44:54 +02:00 committed by Tim-Philipp Müller
parent 6a58c684a7
commit 6589c38d1a
4 changed files with 179 additions and 58 deletions
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53
gst-libs/gst/gl/utils/opengl_versions.h Normal file
View file

@ -0,0 +1,53 @@
/*
* GStreamer
* Copyright (C) 2015 Matthew Waters <matthew@centricular.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef _OPENGL_VERSIONS_H_
#define _OPENGL_VERSIONS_H_
/* list of known OpenGL versions */
/* *INDENT-OFF* */
static const struct { int major, minor; } opengl_versions[] = {
{4, 5},
{4, 4},
{4, 3},
{4, 2},
{4, 1},
{4, 0},
{3, 3},
{3, 2},
{3, 1},
{3, 0},
{2, 1},
{2, 0},
{1, 5},
{1, 4},
{1, 3},
{1, 2},
{1, 1},
{1, 0},
{0, 0} /* end of list */
};
/* *INDENT-ON* */
#endif /* _OPENGL_VERSIONS_H_ */

138
gst-libs/gst/gl/win32/gstglcontext_wgl.c
View file

@ -31,8 +31,19 @@
#include "gstglcontext_wgl.h"
#include <GL/wglext.h>
#include "../utils/opengl_versions.h"
struct _GstGLContextWGLPrivate
{
PFNWGLCREATECONTEXTATTRIBSARBPROC wglCreateContextAttribsARB;
GstGLAPI context_api;
};
#define gst_gl_context_wgl_parent_class parent_class
G_DEFINE_TYPE (GstGLContextWGL, gst_gl_context_wgl, GST_GL_TYPE_CONTEXT);
#define GST_GL_CONTEXT_WGL_GET_PRIVATE(o) \
(G_TYPE_INSTANCE_GET_PRIVATE((o), GST_GL_TYPE_CONTEXT_WGL, GstGLContextWGLPrivate))
static guintptr gst_gl_context_wgl_get_gl_context (GstGLContext * context);
static void gst_gl_context_wgl_swap_buffers (GstGLContext * context);
@ -52,6 +63,8 @@ gst_gl_context_wgl_class_init (GstGLContextWGLClass * klass)
{
GstGLContextClass *context_class = (GstGLContextClass *) klass;
g_type_class_add_private (klass, sizeof (GstGLContextWGLPrivate));
context_class->get_gl_context =
GST_DEBUG_FUNCPTR (gst_gl_context_wgl_get_gl_context);
context_class->choose_format =
@ -74,6 +87,9 @@ gst_gl_context_wgl_class_init (GstGLContextWGLClass * klass)
static void
gst_gl_context_wgl_init (GstGLContextWGL * context_wgl)
{
context_wgl->priv = GST_GL_CONTEXT_WGL_GET_PRIVATE (context_wgl);
context_wgl->priv->context_api = GST_GL_API_OPENGL | GST_GL_API_OPENGL3;
}
/* Must be called in the gl thread */
@ -88,6 +104,44 @@ gst_gl_context_wgl_new (GstGLDisplay * display)
return g_object_new (GST_GL_TYPE_CONTEXT_WGL, NULL);
}
static HGLRC
_create_context_with_flags (GstGLContextWGL * context_wgl, HDC dpy,
HGLRC share_context, gint major, gint minor, gint contextFlags,
gint profileMask)
{
HGLRC ret;
#define N_ATTRIBS 20
gint attribs[N_ATTRIBS];
gint n = 0;
if (major) {
attribs[n++] = WGL_CONTEXT_MAJOR_VERSION_ARB;
attribs[n++] = major;
}
if (minor) {
attribs[n++] = WGL_CONTEXT_MINOR_VERSION_ARB;
attribs[n++] = minor;
}
if (contextFlags) {
attribs[n++] = WGL_CONTEXT_FLAGS_ARB;
attribs[n++] = contextFlags;
}
if (profileMask) {
attribs[n++] = WGL_CONTEXT_PROFILE_MASK_ARB;
attribs[n++] = profileMask;
}
attribs[n++] = 0;
g_assert (n < N_ATTRIBS);
#undef N_ATTRIBS
ret =
context_wgl->priv->wglCreateContextAttribsARB (dpy, share_context,
attribs);
return ret;
}
static gboolean
gst_gl_context_wgl_create_context (GstGLContext * context,
GstGLAPI gl_api, GstGLContext * other_context, GError ** error)
@ -95,7 +149,7 @@ gst_gl_context_wgl_create_context (GstGLContext * context,
GstGLWindow *window;
GstGLContextWGL *context_wgl;
HGLRC external_gl_context = NULL;
PFNWGLCREATECONTEXTATTRIBSARBPROC wglCreateContextAttribsARB = NULL;
HGLRC trampoline;
HDC device;
context_wgl = GST_GL_CONTEXT_WGL (context);
@ -112,45 +166,81 @@ gst_gl_context_wgl_create_context (GstGLContext * context,
external_gl_context = (HGLRC) gst_gl_context_get_gl_context (other_context);
}
context_wgl->wgl_context = wglCreateContext (device);
if (context_wgl->wgl_context)
trampoline = wglCreateContext (device);
if (trampoline)
GST_DEBUG ("gl context created: %" G_GUINTPTR_FORMAT,
(guintptr) context_wgl->wgl_context);
(guintptr) trampoline);
else {
g_set_error (error, GST_GL_CONTEXT_ERROR,
GST_GL_CONTEXT_ERROR_CREATE_CONTEXT, "failed to create glcontext:0x%x",
(unsigned int) GetLastError ());
goto failure;
}
g_assert (context_wgl->wgl_context);
g_assert (trampoline);
/* get extension functions */
wglMakeCurrent (device, trampoline);
if (external_gl_context) {
context_wgl->priv->wglCreateContextAttribsARB =
(PFNWGLCREATECONTEXTATTRIBSARBPROC)
wglGetProcAddress ("wglCreateContextAttribsARB");
wglMakeCurrent (device, context_wgl->wgl_context);
wglMakeCurrent (device, 0);
wglDeleteContext (trampoline);
trampoline = NULL;
wglCreateContextAttribsARB = (PFNWGLCREATECONTEXTATTRIBSARBPROC)
wglGetProcAddress ("wglCreateContextAttribsARB");
if (context_wgl->priv->wglCreateContextAttribsARB != NULL
&& gl_api & GST_GL_API_OPENGL3) {
gint i;
if (wglCreateContextAttribsARB != NULL) {
wglMakeCurrent (device, 0);
wglDeleteContext (context_wgl->wgl_context);
context_wgl->wgl_context =
wglCreateContextAttribsARB (device, external_gl_context, 0);
if (context_wgl->wgl_context == NULL) {
for (i = 0; i < G_N_ELEMENTS (opengl_versions); i++) {
gint profileMask = 0;
gint contextFlags = 0;
if ((opengl_versions[i].major > 3
|| (opengl_versions[i].major == 3
&& opengl_versions[i].minor >= 2))) {
profileMask |= WGL_CONTEXT_CORE_PROFILE_BIT_ARB;
contextFlags |= WGL_CONTEXT_DEBUG_BIT_ARB;
} else {
break;
}
GST_DEBUG_OBJECT (context, "trying to create a GL %d.%d context",
opengl_versions[i].major, opengl_versions[i].minor);
context_wgl->wgl_context = _create_context_with_flags (context_wgl,
device, external_gl_context, opengl_versions[i].major,
opengl_versions[i].minor, contextFlags, profileMask);
if (context_wgl->wgl_context) {
context_wgl->priv->context_api = GST_GL_API_OPENGL3;
break;
}
}
}
if (!context_wgl->wgl_context) {
context_wgl->wgl_context = wglCreateContext (device);
if (!context_wgl->wgl_context) {
g_set_error (error, GST_GL_CONTEXT_ERROR,
GST_GL_CONTEXT_ERROR_CREATE_CONTEXT,
"Failed to create WGL context 0x%x", (unsigned int) GetLastError ());
goto failure;
}
if (external_gl_context) {
if (!wglShareLists (external_gl_context, context_wgl->wgl_context)) {
g_set_error (error, GST_GL_CONTEXT_ERROR,
GST_GL_CONTEXT_ERROR_CREATE_CONTEXT,
"failed to share context through wglCreateContextAttribsARB 0x%x",
"failed to share contexts through wglShareLists 0x%x",
(unsigned int) GetLastError ());
goto failure;
}
} else if (!wglShareLists (external_gl_context, context_wgl->wgl_context)) {
g_set_error (error, GST_GL_CONTEXT_ERROR,
GST_GL_CONTEXT_ERROR_CREATE_CONTEXT,
"failed to share contexts through wglShareLists 0x%x",
(unsigned int) GetLastError ());
goto failure;
}
context_wgl->priv->context_api = GST_GL_API_OPENGL;
}
GST_LOG ("gl context id: %" G_GUINTPTR_FORMAT,
@ -277,7 +367,9 @@ gst_gl_context_wgl_activate (GstGLContext * context, gboolean activate)
GstGLAPI
gst_gl_context_wgl_get_gl_api (GstGLContext * context)
{
return GST_GL_API_OPENGL;
GstGLContextWGL *context_wgl = GST_GL_CONTEXT_WGL (context);
return context_wgl->priv->context_api;
}
static GstGLPlatform

3
gst-libs/gst/gl/win32/gstglcontext_wgl.h
View file

@ -34,6 +34,7 @@ G_BEGIN_DECLS
typedef struct _GstGLContextWGL GstGLContextWGL;
typedef struct _GstGLContextWGLClass GstGLContextWGLClass;
typedef struct _GstGLContextWGLPrivate GstGLContextWGLPrivate;
struct _GstGLContextWGL {
/*< private >*/
@ -42,6 +43,8 @@ struct _GstGLContextWGL {
HGLRC wgl_context;
HGLRC external_gl_context;
GstGLContextWGLPrivate *priv;
gpointer _reserved[GST_PADDING];
};

43
gst-libs/gst/gl/x11/gstglcontext_glx.c
View file

@ -36,6 +36,7 @@
#include <gst/gl/gl.h>
#include "gstglcontext_glx.h"
#include "../utils/opengl_versions.h"
#define GST_CAT_DEFAULT gst_gl_context_debug
@ -137,35 +138,6 @@ _describe_fbconfig (Display * display, GLXFBConfig config)
GST_DEBUG ("stencil: %d", val);
}
/* list of known OpenGL versions */
/* *INDENT-OFF* */
static const struct { int major, minor; } gl_versions[] = {
{4, 5},
{4, 4},
{4, 3},
{4, 2},
{4, 1},
{4, 0},
{3, 3},
{3, 2},
{3, 1},
{3, 0},
{2, 1},
{2, 0},
{1, 5},
{1, 4},
{1, 3},
{1, 2},
{1, 1},
{1, 0},
{0, 0} /* end of list */
};
/* *INDENT-ON* */
static GLXContext
_create_context_with_flags (GstGLContextGLX * context_glx, Display * dpy,
GLXFBConfig fbconfig, GLXContext share_context, gint major, gint minor,
@ -252,12 +224,13 @@ gst_gl_context_glx_create_context (GstGLContext * context,
&& context_glx->priv->glXCreateContextAttribsARB) {
gint i;
for (i = 0; i < G_N_ELEMENTS (gl_versions); i++) {
for (i = 0; i < G_N_ELEMENTS (opengl_versions); i++) {
gint profileMask = 0;
gint contextFlags = 0;
if ((gl_versions[i].major > 3
|| (gl_versions[i].major == 3 && gl_versions[i].minor >= 2))) {
if ((opengl_versions[i].major > 3
|| (opengl_versions[i].major == 3
&& opengl_versions[i].minor >= 2))) {
profileMask |= GLX_CONTEXT_CORE_PROFILE_BIT_ARB;
contextFlags |= GLX_CONTEXT_DEBUG_BIT_ARB;
} else {
@ -265,12 +238,12 @@ gst_gl_context_glx_create_context (GstGLContext * context,
}
GST_DEBUG_OBJECT (context, "trying to create a GL %d.%d context",
gl_versions[i].major, gl_versions[i].minor);
opengl_versions[i].major, opengl_versions[i].minor);
context_glx->glx_context = _create_context_with_flags (context_glx,
device, context_glx->priv->fbconfigs[0],
(GLXContext) external_gl_context, gl_versions[i].major,
gl_versions[i].minor, contextFlags, profileMask);
(GLXContext) external_gl_context, opengl_versions[i].major,
opengl_versions[i].minor, contextFlags, profileMask);
if (context_glx->glx_context) {
context_glx->priv->context_api = GST_GL_API_OPENGL3;