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mpv/video/out/gl_x11.c

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gl_common: split into platform specific files Do this instead of stuffing all x11/cocoa/win32/wayland specific code into gl_common.c. The cocoa specific parts could probably go directly into cocoa_common.m, possibly same with wayland. Also redo how the list of backends is managed. Get rid of the GLTYPE_ constants. Instead of having a big switch() on GLTYPE_, each backend entry has a function pointer to setup the MPGLContext callback (e.g. mpgl_set_backend_x11()).
2013-03-01 15:55:08 +01:00
/*
* MPlayer is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* MPlayer 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with MPlayer; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* You can alternatively redistribute this file and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*/
#include <X11/Xlib.h>
#include <GL/glx.h>
#define MP_GET_GLX_WORKAROUNDS
#include "gl_header_fixes.h"
#include "x11_common.h"
#include "gl_common.h"
struct glx_context {
XVisualInfo *vinfo;
GLXContext context;
GLXFBConfig fbc;
};
static bool create_context_x11_old(struct MPGLContext *ctx)
{
struct glx_context *glx_ctx = ctx->priv;
Display *display = ctx->vo->x11->display;
struct vo *vo = ctx->vo;
GL *gl = ctx->gl;
if (glx_ctx->context)
return true;
GLXContext new_context = glXCreateContext(display, glx_ctx->vinfo, NULL,
True);
if (!new_context) {
gl_x11: mp_msg conversion
2013-09-11 21:25:03 +02:00
MP_FATAL(vo, "Could not create GLX context!\n");
gl_common: split into platform specific files Do this instead of stuffing all x11/cocoa/win32/wayland specific code into gl_common.c. The cocoa specific parts could probably go directly into cocoa_common.m, possibly same with wayland. Also redo how the list of backends is managed. Get rid of the GLTYPE_ constants. Instead of having a big switch() on GLTYPE_, each backend entry has a function pointer to setup the MPGLContext callback (e.g. mpgl_set_backend_x11()).
2013-03-01 15:55:08 +01:00
return false;
}
if (!glXMakeCurrent(display, ctx->vo->x11->window, new_context)) {
gl_x11: mp_msg conversion
2013-09-11 21:25:03 +02:00
MP_FATAL(vo, "Could not set GLX context!\n");
gl_common: split into platform specific files Do this instead of stuffing all x11/cocoa/win32/wayland specific code into gl_common.c. The cocoa specific parts could probably go directly into cocoa_common.m, possibly same with wayland. Also redo how the list of backends is managed. Get rid of the GLTYPE_ constants. Instead of having a big switch() on GLTYPE_, each backend entry has a function pointer to setup the MPGLContext callback (e.g. mpgl_set_backend_x11()).
2013-03-01 15:55:08 +01:00
glXDestroyContext(display, new_context);
return false;
}
void *(*getProcAddress)(const GLubyte *);
getProcAddress = mp_getdladdr("glXGetProcAddress");
if (!getProcAddress)
getProcAddress = mp_getdladdr("glXGetProcAddressARB");
const char *glxstr = "";
const char *(*glXExtStr)(Display *, int)
= mp_getdladdr("glXQueryExtensionsString");
if (glXExtStr)
glxstr = glXExtStr(display, ctx->vo->x11->screen);
gl_common: complete mp_msg conversion Hopefully this works on Wayland and Cocoa, which I didn't test.
2013-09-12 00:57:32 +02:00
mpgl_load_functions(gl, getProcAddress, glxstr, vo->log);
gl_common: split into platform specific files Do this instead of stuffing all x11/cocoa/win32/wayland specific code into gl_common.c. The cocoa specific parts could probably go directly into cocoa_common.m, possibly same with wayland. Also redo how the list of backends is managed. Get rid of the GLTYPE_ constants. Instead of having a big switch() on GLTYPE_, each backend entry has a function pointer to setup the MPGLContext callback (e.g. mpgl_set_backend_x11()).
2013-03-01 15:55:08 +01:00
if (!gl->GenPrograms && gl->GetString &&
gl->version < MPGL_VER(3, 0) &&
strstr(gl->GetString(GL_EXTENSIONS), "GL_ARB_vertex_program"))
{
gl_x11: mp_msg conversion
2013-09-11 21:25:03 +02:00
MP_WARN(vo, "Broken glXGetProcAddress detected, trying workaround\n");
gl_common: complete mp_msg conversion Hopefully this works on Wayland and Cocoa, which I didn't test.
2013-09-12 00:57:32 +02:00
mpgl_load_functions(gl, NULL, glxstr, vo->log);
gl_common: split into platform specific files Do this instead of stuffing all x11/cocoa/win32/wayland specific code into gl_common.c. The cocoa specific parts could probably go directly into cocoa_common.m, possibly same with wayland. Also redo how the list of backends is managed. Get rid of the GLTYPE_ constants. Instead of having a big switch() on GLTYPE_, each backend entry has a function pointer to setup the MPGLContext callback (e.g. mpgl_set_backend_x11()).
2013-03-01 15:55:08 +01:00
}
glx_ctx->context = new_context;
if (!glXIsDirect(vo->x11->display, new_context))
ctx->gl->mpgl_caps &= ~MPGL_CAP_NO_SW;
return true;
}
typedef GLXContext (*glXCreateContextAttribsARBProc)
(Display*, GLXFBConfig, GLXContext, Bool, const int*);
static bool create_context_x11_gl3(struct MPGLContext *ctx, bool debug)
{
struct glx_context *glx_ctx = ctx->priv;
struct vo *vo = ctx->vo;
if (glx_ctx->context)
return true;
glXCreateContextAttribsARBProc glXCreateContextAttribsARB =
(glXCreateContextAttribsARBProc)
glXGetProcAddressARB((const GLubyte *)"glXCreateContextAttribsARB");
const char *glxstr = "";
const char *(*glXExtStr)(Display *, int)
= mp_getdladdr("glXQueryExtensionsString");
if (glXExtStr)
glxstr = glXExtStr(vo->x11->display, vo->x11->screen);
bool have_ctx_ext = glxstr && !!strstr(glxstr, "GLX_ARB_create_context");
if (!(have_ctx_ext && glXCreateContextAttribsARB)) {
return false;
}
int gl_version = ctx->requested_gl_version;
int context_attribs[] = {
GLX_CONTEXT_MAJOR_VERSION_ARB, MPGL_VER_GET_MAJOR(gl_version),
GLX_CONTEXT_MINOR_VERSION_ARB, MPGL_VER_GET_MINOR(gl_version),
GLX_CONTEXT_PROFILE_MASK_ARB, GLX_CONTEXT_CORE_PROFILE_BIT_ARB,
GLX_CONTEXT_FLAGS_ARB, debug ? GLX_CONTEXT_DEBUG_BIT_ARB : 0,
None
};
GLXContext context = glXCreateContextAttribsARB(vo->x11->display,
glx_ctx->fbc, 0, True,
context_attribs);
if (!context) {
gl_x11: change error message when GL3 context creation fails On systems that provide legacy OpenGL (up to 2.1), but not GL3 and later, creating a GL3 context will fail. We then revert to legacy GL. Apparently the error message printed when the GL3 context creation fails is confusing. We could just silence it, but there's still a X error ("X11 error: GLXBadFBConfig"), which would be quite hard to filter out. For one, it would require messing with the X11 error handler, which doesn't even carry a context pointer (for application private data), so we don't even want to touch it. Instead, change the error message to inform the user what's actually happening: a fallback to an older version of OpenGL.
2013-10-28 23:43:07 +01:00
MP_ERR(vo, "Could not create GL3 context. Retrying with legacy context.\n");
gl_common: split into platform specific files Do this instead of stuffing all x11/cocoa/win32/wayland specific code into gl_common.c. The cocoa specific parts could probably go directly into cocoa_common.m, possibly same with wayland. Also redo how the list of backends is managed. Get rid of the GLTYPE_ constants. Instead of having a big switch() on GLTYPE_, each backend entry has a function pointer to setup the MPGLContext callback (e.g. mpgl_set_backend_x11()).
2013-03-01 15:55:08 +01:00
return false;
}
// set context
if (!glXMakeCurrent(vo->x11->display, vo->x11->window, context)) {
gl_x11: mp_msg conversion
2013-09-11 21:25:03 +02:00
MP_FATAL(vo, "Could not set GLX context!\n");
gl_common: split into platform specific files Do this instead of stuffing all x11/cocoa/win32/wayland specific code into gl_common.c. The cocoa specific parts could probably go directly into cocoa_common.m, possibly same with wayland. Also redo how the list of backends is managed. Get rid of the GLTYPE_ constants. Instead of having a big switch() on GLTYPE_, each backend entry has a function pointer to setup the MPGLContext callback (e.g. mpgl_set_backend_x11()).
2013-03-01 15:55:08 +01:00
glXDestroyContext(vo->x11->display, context);
return false;
}
glx_ctx->context = context;
gl_common: complete mp_msg conversion Hopefully this works on Wayland and Cocoa, which I didn't test.
2013-09-12 00:57:32 +02:00
mpgl_load_functions(ctx->gl, (void *)glXGetProcAddress, glxstr, vo->log);
gl_common: split into platform specific files Do this instead of stuffing all x11/cocoa/win32/wayland specific code into gl_common.c. The cocoa specific parts could probably go directly into cocoa_common.m, possibly same with wayland. Also redo how the list of backends is managed. Get rid of the GLTYPE_ constants. Instead of having a big switch() on GLTYPE_, each backend entry has a function pointer to setup the MPGLContext callback (e.g. mpgl_set_backend_x11()).
2013-03-01 15:55:08 +01:00
if (!glXIsDirect(vo->x11->display, context))
ctx->gl->mpgl_caps &= ~MPGL_CAP_NO_SW;
return true;
}
// The GL3/FBC initialization code roughly follows/copies from:
// http://www.opengl.org/wiki/Tutorial:_OpenGL_3.0_Context_Creation_(GLX)
// but also uses some of the old code.
vo_opengl: add alpha output Allows playing video with alpha information on X11, as long as the video contains alpha and the window manager does compositing. See vo.rst. Whether a window can be transparent is decided by the choice of the X Visual used for window creation. Unfortunately, there's no direct way to request such a Visual through the GLX or the X API, and use of the XRender extension is required to find out whether a Visual implies a framebuffer with alpha used by XRender (see for example [1]). Instead of depending on the XRender wrapper library (which would require annoying configure checks, even though XRender is virtually always supported), use a simple heuristics to find out whether a Visual has alpha. Since getting it wrong just means an optional feature will not work as expected, we consider this ok. [1] http://stackoverflow.com/questions/4052940/how-to-make-an-opengl- rendering-context-with-transparent-background/9215724#9215724
2013-03-28 21:44:27 +01:00
static GLXFBConfig select_fb_config(struct vo *vo, const int *attribs, int flags)
gl_common: split into platform specific files Do this instead of stuffing all x11/cocoa/win32/wayland specific code into gl_common.c. The cocoa specific parts could probably go directly into cocoa_common.m, possibly same with wayland. Also redo how the list of backends is managed. Get rid of the GLTYPE_ constants. Instead of having a big switch() on GLTYPE_, each backend entry has a function pointer to setup the MPGLContext callback (e.g. mpgl_set_backend_x11()).
2013-03-01 15:55:08 +01:00
{
int fbcount;
GLXFBConfig *fbc = glXChooseFBConfig(vo->x11->display, vo->x11->screen,
attribs, &fbcount);
if (!fbc)
return NULL;
// The list in fbc is sorted (so that the first element is the best).
vo_opengl: don't assume there'a always 1 fbconfig on success Seems to be a reasonable assumption, but it's probably not guaranteed.
2014-01-21 23:34:02 +01:00
GLXFBConfig fbconfig = fbcount > 0 ? fbc[0] : NULL;
gl_common: split into platform specific files Do this instead of stuffing all x11/cocoa/win32/wayland specific code into gl_common.c. The cocoa specific parts could probably go directly into cocoa_common.m, possibly same with wayland. Also redo how the list of backends is managed. Get rid of the GLTYPE_ constants. Instead of having a big switch() on GLTYPE_, each backend entry has a function pointer to setup the MPGLContext callback (e.g. mpgl_set_backend_x11()).
2013-03-01 15:55:08 +01:00
vo_opengl: add alpha output Allows playing video with alpha information on X11, as long as the video contains alpha and the window manager does compositing. See vo.rst. Whether a window can be transparent is decided by the choice of the X Visual used for window creation. Unfortunately, there's no direct way to request such a Visual through the GLX or the X API, and use of the XRender extension is required to find out whether a Visual implies a framebuffer with alpha used by XRender (see for example [1]). Instead of depending on the XRender wrapper library (which would require annoying configure checks, even though XRender is virtually always supported), use a simple heuristics to find out whether a Visual has alpha. Since getting it wrong just means an optional feature will not work as expected, we consider this ok. [1] http://stackoverflow.com/questions/4052940/how-to-make-an-opengl- rendering-context-with-transparent-background/9215724#9215724
2013-03-28 21:44:27 +01:00
if (flags & VOFLAG_ALPHA) {
for (int n = 0; n < fbcount; n++) {
XVisualInfo *v = glXGetVisualFromFBConfig(vo->x11->display, fbc[n]);
gl_x11: fail gracefully if selected FBconfig has no X visual glXGetVisualFromFBConfig() specifies specifies that it can return NULL if there is no associated X visual. Instead of crashing, let initialization fail. I'm not sure if this is actually supposed to work with a fallback visual (passing a NULL visual to vo_x11_config_vo_window would just do this), but let's play safe for now. Apparently this can happen when trying to use vo_opengl over a remote X display.
2013-10-03 23:45:49 +02:00
if (!v)
continue;
vo_opengl: add alpha output Allows playing video with alpha information on X11, as long as the video contains alpha and the window manager does compositing. See vo.rst. Whether a window can be transparent is decided by the choice of the X Visual used for window creation. Unfortunately, there's no direct way to request such a Visual through the GLX or the X API, and use of the XRender extension is required to find out whether a Visual implies a framebuffer with alpha used by XRender (see for example [1]). Instead of depending on the XRender wrapper library (which would require annoying configure checks, even though XRender is virtually always supported), use a simple heuristics to find out whether a Visual has alpha. Since getting it wrong just means an optional feature will not work as expected, we consider this ok. [1] http://stackoverflow.com/questions/4052940/how-to-make-an-opengl- rendering-context-with-transparent-background/9215724#9215724
2013-03-28 21:44:27 +01:00
// This is a heuristic at best. Note that normal 8 bit Visuals use
// a depth of 24, even if the pixels are padded to 32 bit. If the
// depth is higher than 24, the remaining bits must be alpha.
// Note: vinfo->bits_per_rgb appears to be useless (is always 8).
unsigned long mask = v->depth == 32 ?
(unsigned long)-1 : (1 << (unsigned long)v->depth) - 1;
if (mask & ~(v->red_mask | v->green_mask | v->blue_mask)) {
fbconfig = fbc[n];
break;
}
}
}
gl_common: split into platform specific files Do this instead of stuffing all x11/cocoa/win32/wayland specific code into gl_common.c. The cocoa specific parts could probably go directly into cocoa_common.m, possibly same with wayland. Also redo how the list of backends is managed. Get rid of the GLTYPE_ constants. Instead of having a big switch() on GLTYPE_, each backend entry has a function pointer to setup the MPGLContext callback (e.g. mpgl_set_backend_x11()).
2013-03-01 15:55:08 +01:00
XFree(fbc);
return fbconfig;
}
vo_opengl: add alpha output Allows playing video with alpha information on X11, as long as the video contains alpha and the window manager does compositing. See vo.rst. Whether a window can be transparent is decided by the choice of the X Visual used for window creation. Unfortunately, there's no direct way to request such a Visual through the GLX or the X API, and use of the XRender extension is required to find out whether a Visual implies a framebuffer with alpha used by XRender (see for example [1]). Instead of depending on the XRender wrapper library (which would require annoying configure checks, even though XRender is virtually always supported), use a simple heuristics to find out whether a Visual has alpha. Since getting it wrong just means an optional feature will not work as expected, we consider this ok. [1] http://stackoverflow.com/questions/4052940/how-to-make-an-opengl- rendering-context-with-transparent-background/9215724#9215724
2013-03-28 21:44:27 +01:00
static void set_glx_attrib(int *attribs, int name, int value)
{
for (int n = 0; attribs[n * 2 + 0] != None; n++) {
if (attribs[n * 2 + 0] == name) {
attribs[n * 2 + 1] = value;
break;
}
}
}
gl_common: split into platform specific files Do this instead of stuffing all x11/cocoa/win32/wayland specific code into gl_common.c. The cocoa specific parts could probably go directly into cocoa_common.m, possibly same with wayland. Also redo how the list of backends is managed. Get rid of the GLTYPE_ constants. Instead of having a big switch() on GLTYPE_, each backend entry has a function pointer to setup the MPGLContext callback (e.g. mpgl_set_backend_x11()).
2013-03-01 15:55:08 +01:00
static bool config_window_x11(struct MPGLContext *ctx, uint32_t d_width,
uint32_t d_height, uint32_t flags)
{
struct vo *vo = ctx->vo;
struct glx_context *glx_ctx = ctx->priv;
if (glx_ctx->context) {
// GL context and window already exist.
// Only update window geometry etc.
video/out: remove pointless x/y parameter from vo_x11_config_vo_window This never made any real sense; the "backend" has to access vo->dx/dy anyway.
2014-01-11 18:50:02 +01:00
vo_x11_config_vo_window(vo, glx_ctx->vinfo, d_width, d_height, flags, "gl");
gl_common: split into platform specific files Do this instead of stuffing all x11/cocoa/win32/wayland specific code into gl_common.c. The cocoa specific parts could probably go directly into cocoa_common.m, possibly same with wayland. Also redo how the list of backends is managed. Get rid of the GLTYPE_ constants. Instead of having a big switch() on GLTYPE_, each backend entry has a function pointer to setup the MPGLContext callback (e.g. mpgl_set_backend_x11()).
2013-03-01 15:55:08 +01:00
return true;
}
int glx_major, glx_minor;
// FBConfigs were added in GLX version 1.3.
if (!glXQueryVersion(vo->x11->display, &glx_major, &glx_minor) ||
(MPGL_VER(glx_major, glx_minor) < MPGL_VER(1, 3)))
{
gl_x11: mp_msg conversion
2013-09-11 21:25:03 +02:00
MP_ERR(vo, "GLX version older than 1.3.\n");
gl_common: split into platform specific files Do this instead of stuffing all x11/cocoa/win32/wayland specific code into gl_common.c. The cocoa specific parts could probably go directly into cocoa_common.m, possibly same with wayland. Also redo how the list of backends is managed. Get rid of the GLTYPE_ constants. Instead of having a big switch() on GLTYPE_, each backend entry has a function pointer to setup the MPGLContext callback (e.g. mpgl_set_backend_x11()).
2013-03-01 15:55:08 +01:00
return false;
}
int glx_attribs[] = {
GLX_STEREO, False,
GLX_X_RENDERABLE, True,
gl_x11: always request true color visual This fixes issue #504. For some reason, glXChooseFBConfig() will return a fbconfig with no associated visual. (I'm not sure if this allowed. They don't always have a visual, but since GLX_X_RENDERABLE is set and GLX_DRAWABLE_TYPE is (implicitly) set to GLX_WINDOW_BIT, why would there be no visual?) Even worse, a test program seems to show that a 16 bit fbconfig is selected (instead of 24/32 bit), which doesn't sound nice at all. Since there _are_ better fbconfigs available, glXChooseFBConfig() should normally sort them by quality, and return the better ones first. It's worth noting that this function should also prefer GLX_TRUE_COLOR over anything else, although this comes last in the sort order. Whatever is going on, requesting GLX_X_VISUAL_TYPE with GLX_TRUE_COLOR seems to fix it.
2014-02-06 14:12:04 +01:00
GLX_X_VISUAL_TYPE, GLX_TRUE_COLOR,
gl_common: split into platform specific files Do this instead of stuffing all x11/cocoa/win32/wayland specific code into gl_common.c. The cocoa specific parts could probably go directly into cocoa_common.m, possibly same with wayland. Also redo how the list of backends is managed. Get rid of the GLTYPE_ constants. Instead of having a big switch() on GLTYPE_, each backend entry has a function pointer to setup the MPGLContext callback (e.g. mpgl_set_backend_x11()).
2013-03-01 15:55:08 +01:00
GLX_RED_SIZE, 1,
GLX_GREEN_SIZE, 1,
GLX_BLUE_SIZE, 1,
vo_opengl: add alpha output Allows playing video with alpha information on X11, as long as the video contains alpha and the window manager does compositing. See vo.rst. Whether a window can be transparent is decided by the choice of the X Visual used for window creation. Unfortunately, there's no direct way to request such a Visual through the GLX or the X API, and use of the XRender extension is required to find out whether a Visual implies a framebuffer with alpha used by XRender (see for example [1]). Instead of depending on the XRender wrapper library (which would require annoying configure checks, even though XRender is virtually always supported), use a simple heuristics to find out whether a Visual has alpha. Since getting it wrong just means an optional feature will not work as expected, we consider this ok. [1] http://stackoverflow.com/questions/4052940/how-to-make-an-opengl- rendering-context-with-transparent-background/9215724#9215724
2013-03-28 21:44:27 +01:00
GLX_ALPHA_SIZE, 0,
gl_common: split into platform specific files Do this instead of stuffing all x11/cocoa/win32/wayland specific code into gl_common.c. The cocoa specific parts could probably go directly into cocoa_common.m, possibly same with wayland. Also redo how the list of backends is managed. Get rid of the GLTYPE_ constants. Instead of having a big switch() on GLTYPE_, each backend entry has a function pointer to setup the MPGLContext callback (e.g. mpgl_set_backend_x11()).
2013-03-01 15:55:08 +01:00
GLX_DOUBLEBUFFER, True,
None
};
GLXFBConfig fbc = NULL;
vo_opengl: add alpha output Allows playing video with alpha information on X11, as long as the video contains alpha and the window manager does compositing. See vo.rst. Whether a window can be transparent is decided by the choice of the X Visual used for window creation. Unfortunately, there's no direct way to request such a Visual through the GLX or the X API, and use of the XRender extension is required to find out whether a Visual implies a framebuffer with alpha used by XRender (see for example [1]). Instead of depending on the XRender wrapper library (which would require annoying configure checks, even though XRender is virtually always supported), use a simple heuristics to find out whether a Visual has alpha. Since getting it wrong just means an optional feature will not work as expected, we consider this ok. [1] http://stackoverflow.com/questions/4052940/how-to-make-an-opengl- rendering-context-with-transparent-background/9215724#9215724
2013-03-28 21:44:27 +01:00
if (flags & VOFLAG_ALPHA) {
set_glx_attrib(glx_attribs, GLX_ALPHA_SIZE, 1);
fbc = select_fb_config(vo, glx_attribs, flags);
if (!fbc) {
set_glx_attrib(glx_attribs, GLX_ALPHA_SIZE, 0);
flags &= ~VOFLAG_ALPHA;
}
}
gl_common: split into platform specific files Do this instead of stuffing all x11/cocoa/win32/wayland specific code into gl_common.c. The cocoa specific parts could probably go directly into cocoa_common.m, possibly same with wayland. Also redo how the list of backends is managed. Get rid of the GLTYPE_ constants. Instead of having a big switch() on GLTYPE_, each backend entry has a function pointer to setup the MPGLContext callback (e.g. mpgl_set_backend_x11()).
2013-03-01 15:55:08 +01:00
if (flags & VOFLAG_STEREO) {
vo_opengl: add alpha output Allows playing video with alpha information on X11, as long as the video contains alpha and the window manager does compositing. See vo.rst. Whether a window can be transparent is decided by the choice of the X Visual used for window creation. Unfortunately, there's no direct way to request such a Visual through the GLX or the X API, and use of the XRender extension is required to find out whether a Visual implies a framebuffer with alpha used by XRender (see for example [1]). Instead of depending on the XRender wrapper library (which would require annoying configure checks, even though XRender is virtually always supported), use a simple heuristics to find out whether a Visual has alpha. Since getting it wrong just means an optional feature will not work as expected, we consider this ok. [1] http://stackoverflow.com/questions/4052940/how-to-make-an-opengl- rendering-context-with-transparent-background/9215724#9215724
2013-03-28 21:44:27 +01:00
set_glx_attrib(glx_attribs, GLX_STEREO, True);
fbc = select_fb_config(vo, glx_attribs, flags);
gl_common: split into platform specific files Do this instead of stuffing all x11/cocoa/win32/wayland specific code into gl_common.c. The cocoa specific parts could probably go directly into cocoa_common.m, possibly same with wayland. Also redo how the list of backends is managed. Get rid of the GLTYPE_ constants. Instead of having a big switch() on GLTYPE_, each backend entry has a function pointer to setup the MPGLContext callback (e.g. mpgl_set_backend_x11()).
2013-03-01 15:55:08 +01:00
if (!fbc) {
gl_x11: mp_msg conversion
2013-09-11 21:25:03 +02:00
MP_ERR(vo, "Could not find a stereo visual,"
" 3D will probably not work!\n");
vo_opengl: add alpha output Allows playing video with alpha information on X11, as long as the video contains alpha and the window manager does compositing. See vo.rst. Whether a window can be transparent is decided by the choice of the X Visual used for window creation. Unfortunately, there's no direct way to request such a Visual through the GLX or the X API, and use of the XRender extension is required to find out whether a Visual implies a framebuffer with alpha used by XRender (see for example [1]). Instead of depending on the XRender wrapper library (which would require annoying configure checks, even though XRender is virtually always supported), use a simple heuristics to find out whether a Visual has alpha. Since getting it wrong just means an optional feature will not work as expected, we consider this ok. [1] http://stackoverflow.com/questions/4052940/how-to-make-an-opengl- rendering-context-with-transparent-background/9215724#9215724
2013-03-28 21:44:27 +01:00
set_glx_attrib(glx_attribs, GLX_STEREO, False);
flags &= ~VOFLAG_STEREO;
gl_common: split into platform specific files Do this instead of stuffing all x11/cocoa/win32/wayland specific code into gl_common.c. The cocoa specific parts could probably go directly into cocoa_common.m, possibly same with wayland. Also redo how the list of backends is managed. Get rid of the GLTYPE_ constants. Instead of having a big switch() on GLTYPE_, each backend entry has a function pointer to setup the MPGLContext callback (e.g. mpgl_set_backend_x11()).
2013-03-01 15:55:08 +01:00
}
}
if (!fbc)
vo_opengl: add alpha output Allows playing video with alpha information on X11, as long as the video contains alpha and the window manager does compositing. See vo.rst. Whether a window can be transparent is decided by the choice of the X Visual used for window creation. Unfortunately, there's no direct way to request such a Visual through the GLX or the X API, and use of the XRender extension is required to find out whether a Visual implies a framebuffer with alpha used by XRender (see for example [1]). Instead of depending on the XRender wrapper library (which would require annoying configure checks, even though XRender is virtually always supported), use a simple heuristics to find out whether a Visual has alpha. Since getting it wrong just means an optional feature will not work as expected, we consider this ok. [1] http://stackoverflow.com/questions/4052940/how-to-make-an-opengl- rendering-context-with-transparent-background/9215724#9215724
2013-03-28 21:44:27 +01:00
fbc = select_fb_config(vo, glx_attribs, flags);
gl_common: split into platform specific files Do this instead of stuffing all x11/cocoa/win32/wayland specific code into gl_common.c. The cocoa specific parts could probably go directly into cocoa_common.m, possibly same with wayland. Also redo how the list of backends is managed. Get rid of the GLTYPE_ constants. Instead of having a big switch() on GLTYPE_, each backend entry has a function pointer to setup the MPGLContext callback (e.g. mpgl_set_backend_x11()).
2013-03-01 15:55:08 +01:00
if (!fbc) {
gl_x11: mp_msg conversion
2013-09-11 21:25:03 +02:00
MP_ERR(vo, "no GLX support present\n");
gl_common: split into platform specific files Do this instead of stuffing all x11/cocoa/win32/wayland specific code into gl_common.c. The cocoa specific parts could probably go directly into cocoa_common.m, possibly same with wayland. Also redo how the list of backends is managed. Get rid of the GLTYPE_ constants. Instead of having a big switch() on GLTYPE_, each backend entry has a function pointer to setup the MPGLContext callback (e.g. mpgl_set_backend_x11()).
2013-03-01 15:55:08 +01:00
return false;
}
glx_ctx->fbc = fbc;
glx_ctx->vinfo = glXGetVisualFromFBConfig(vo->x11->display, fbc);
gl_x11: fail gracefully if selected FBconfig has no X visual glXGetVisualFromFBConfig() specifies specifies that it can return NULL if there is no associated X visual. Instead of crashing, let initialization fail. I'm not sure if this is actually supposed to work with a fallback visual (passing a NULL visual to vo_x11_config_vo_window would just do this), but let's play safe for now. Apparently this can happen when trying to use vo_opengl over a remote X display.
2013-10-03 23:45:49 +02:00
if (!glx_ctx->vinfo) {
MP_ERR(vo, "Selected GLX FB config has no associated X visual\n");
return false;
}
gl_common: split into platform specific files Do this instead of stuffing all x11/cocoa/win32/wayland specific code into gl_common.c. The cocoa specific parts could probably go directly into cocoa_common.m, possibly same with wayland. Also redo how the list of backends is managed. Get rid of the GLTYPE_ constants. Instead of having a big switch() on GLTYPE_, each backend entry has a function pointer to setup the MPGLContext callback (e.g. mpgl_set_backend_x11()).
2013-03-01 15:55:08 +01:00
gl_x11: mp_msg conversion
2013-09-11 21:25:03 +02:00
MP_VERBOSE(vo, "GLX chose visual with ID 0x%x\n", (int)glx_ctx->vinfo->visualid);
gl_common: split into platform specific files Do this instead of stuffing all x11/cocoa/win32/wayland specific code into gl_common.c. The cocoa specific parts could probably go directly into cocoa_common.m, possibly same with wayland. Also redo how the list of backends is managed. Get rid of the GLTYPE_ constants. Instead of having a big switch() on GLTYPE_, each backend entry has a function pointer to setup the MPGLContext callback (e.g. mpgl_set_backend_x11()).
2013-03-01 15:55:08 +01:00
glXGetFBConfigAttrib(vo->x11->display, fbc, GLX_RED_SIZE, &ctx->depth_r);
glXGetFBConfigAttrib(vo->x11->display, fbc, GLX_GREEN_SIZE, &ctx->depth_g);
glXGetFBConfigAttrib(vo->x11->display, fbc, GLX_BLUE_SIZE, &ctx->depth_b);
video/out: remove pointless x/y parameter from vo_x11_config_vo_window This never made any real sense; the "backend" has to access vo->dx/dy anyway.
2014-01-11 18:50:02 +01:00
vo_x11_config_vo_window(vo, glx_ctx->vinfo, d_width, d_height, flags, "gl");
gl_common: split into platform specific files Do this instead of stuffing all x11/cocoa/win32/wayland specific code into gl_common.c. The cocoa specific parts could probably go directly into cocoa_common.m, possibly same with wayland. Also redo how the list of backends is managed. Get rid of the GLTYPE_ constants. Instead of having a big switch() on GLTYPE_, each backend entry has a function pointer to setup the MPGLContext callback (e.g. mpgl_set_backend_x11()).
2013-03-01 15:55:08 +01:00
bool success = false;
if (ctx->requested_gl_version >= MPGL_VER(3, 0))
success = create_context_x11_gl3(ctx, flags & VOFLAG_GL_DEBUG);
if (!success)
success = create_context_x11_old(ctx);
return success;
}
/**
* \brief free the VisualInfo and GLXContext of an OpenGL context.
* \ingroup glcontext
*/
static void releaseGlContext_x11(MPGLContext *ctx)
{
struct glx_context *glx_ctx = ctx->priv;
XVisualInfo **vinfo = &glx_ctx->vinfo;
GLXContext *context = &glx_ctx->context;
Display *display = ctx->vo->x11->display;
GL *gl = ctx->gl;
if (*vinfo)
XFree(*vinfo);
*vinfo = NULL;
if (*context) {
if (gl->Finish)
gl->Finish();
glXMakeCurrent(display, None, NULL);
glXDestroyContext(display, *context);
}
*context = 0;
}
static void swapGlBuffers_x11(MPGLContext *ctx)
{
glXSwapBuffers(ctx->vo->x11->display, ctx->vo->x11->window);
}
void mpgl_set_backend_x11(MPGLContext *ctx)
{
ctx->priv = talloc_zero(ctx, struct glx_context);
ctx->config_window = config_window_x11;
ctx->releaseGlContext = releaseGlContext_x11;
ctx->swapGlBuffers = swapGlBuffers_x11;
ctx->vo_init = vo_x11_init;
ctx->vo_uninit = vo_x11_uninit;
video/out: introduce vo_control for gl_common based VOs Instead of having separate callbacks for each backend-handled feature (like MPGLContext.fullscreen, MPGLContext.border, etc.), pass the VOCTRL responsible for this directly to the backend. This allows removing a bunch of callbacks, that currently must be set even for optional/lesser features (like VOCTRL_BORDER). This requires changes to all VOs using gl_common, as well as all backends that support gl_common. Also introduce VOCTRL_CHECK_EVENTS. vo.check_events is now optional. VO backends can use VOCTRL_CHECK_EVENTS instead to implementing check_events. This has the advantage that the event handling code in VOs doesn't have to be duplicated if vo_control() is used.
2013-05-15 18:17:18 +02:00
ctx->vo_control = vo_x11_control;
gl_common: split into platform specific files Do this instead of stuffing all x11/cocoa/win32/wayland specific code into gl_common.c. The cocoa specific parts could probably go directly into cocoa_common.m, possibly same with wayland. Also redo how the list of backends is managed. Get rid of the GLTYPE_ constants. Instead of having a big switch() on GLTYPE_, each backend entry has a function pointer to setup the MPGLContext callback (e.g. mpgl_set_backend_x11()).
2013-03-01 15:55:08 +01:00
}
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