diff options
Diffstat (limited to 'video/out/opengl/context_glx.c')
| -rw-r--r-- | video/out/opengl/context_glx.c | 376 |
1 files changed, 376 insertions, 0 deletions
diff --git a/video/out/opengl/context_glx.c b/video/out/opengl/context_glx.c new file mode 100644 index 0000000000..462f2cf592 --- /dev/null +++ b/video/out/opengl/context_glx.c @@ -0,0 +1,376 @@ +/* + * This file is part of mpv. + * + * mpv is free software; you can redistribute it 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. + * + * mpv 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 Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with mpv. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <X11/Xlib.h> +#include <GL/glx.h> + +// FreeBSD 10.0-CURRENT lacks the GLX_ARB_create_context extension completely +#ifndef GLX_CONTEXT_MAJOR_VERSION_ARB +#define GLX_CONTEXT_MAJOR_VERSION_ARB 0x2091 +#define GLX_CONTEXT_MINOR_VERSION_ARB 0x2092 +#define GLX_CONTEXT_FLAGS_ARB 0x2094 +#define GLX_CONTEXT_PROFILE_MASK_ARB 0x9126 +#ifndef __APPLE__ +// These are respectively 0x00000001 and 0x00000002 on OSX +#define GLX_CONTEXT_DEBUG_BIT_ARB 0x0001 +#define GLX_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB 0x0002 +#endif +#define GLX_CONTEXT_CORE_PROFILE_BIT_ARB 0x00000001 +#define GLX_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB 0x00000002 +#endif +// GLX_EXT_create_context_es2_profile +#ifndef GLX_CONTEXT_ES2_PROFILE_BIT_EXT +#define GLX_CONTEXT_ES2_PROFILE_BIT_EXT 0x00000004 +#endif + +#include "video/out/x11_common.h" +#include "context.h" +#include "utils.h" + +struct priv { + GL gl; + XVisualInfo *vinfo; + GLXContext context; + GLXFBConfig fbc; +}; + +static void glx_uninit(struct ra_ctx *ctx) +{ + struct priv *p = ctx->priv; + ra_gl_ctx_uninit(ctx); + + if (p->vinfo) + XFree(p->vinfo); + if (p->context) { + Display *display = ctx->vo->x11->display; + glXMakeCurrent(display, None, NULL); + glXDestroyContext(display, p->context); + } + + vo_x11_uninit(ctx->vo); +} + +static bool create_context_x11_old(struct ra_ctx *ctx, GL *gl) +{ + struct priv *p = ctx->priv; + Display *display = ctx->vo->x11->display; + struct vo *vo = ctx->vo; + + if (p->context) + return true; + + if (!p->vinfo) { + MP_FATAL(vo, "Can't create a legacy GLX context without X visual\n"); + return false; + } + + GLXContext new_context = glXCreateContext(display, p->vinfo, NULL, True); + if (!new_context) { + MP_FATAL(vo, "Could not create GLX context!\n"); + return false; + } + + if (!glXMakeCurrent(display, ctx->vo->x11->window, new_context)) { + MP_FATAL(vo, "Could not set GLX context!\n"); + glXDestroyContext(display, new_context); + return false; + } + + const char *glxstr = glXQueryExtensionsString(display, ctx->vo->x11->screen); + + mpgl_load_functions(gl, (void *)glXGetProcAddressARB, glxstr, vo->log); + + p->context = new_context; + + return true; +} + +typedef GLXContext (*glXCreateContextAttribsARBProc) + (Display*, GLXFBConfig, GLXContext, Bool, const int*); + +static bool create_context_x11_gl3(struct ra_ctx *ctx, GL *gl, int gl_version, + bool es) +{ + struct priv *p = ctx->priv; + struct vo *vo = ctx->vo; + + if (p->context) + return true; + + if (!ra_gl_ctx_test_version(ctx, gl_version, es)) + return false; + + glXCreateContextAttribsARBProc glXCreateContextAttribsARB = + (glXCreateContextAttribsARBProc) + glXGetProcAddressARB((const GLubyte *)"glXCreateContextAttribsARB"); + + const char *glxstr = + glXQueryExtensionsString(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 ctx_flags = ctx->opts.debug ? GLX_CONTEXT_DEBUG_BIT_ARB : 0; + int profile_mask = GLX_CONTEXT_CORE_PROFILE_BIT_ARB; + + if (es) { + profile_mask = GLX_CONTEXT_ES2_PROFILE_BIT_EXT; + if (!(glxstr && strstr(glxstr, "GLX_EXT_create_context_es2_profile"))) + return false; + } + + 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, profile_mask, + GLX_CONTEXT_FLAGS_ARB, ctx_flags, + None + }; + vo_x11_silence_xlib(1); + GLXContext context = glXCreateContextAttribsARB(vo->x11->display, + p->fbc, 0, True, + context_attribs); + vo_x11_silence_xlib(-1); + if (!context) + return false; + + // set context + if (!glXMakeCurrent(vo->x11->display, vo->x11->window, context)) { + MP_FATAL(vo, "Could not set GLX context!\n"); + glXDestroyContext(vo->x11->display, context); + return false; + } + + p->context = context; + + mpgl_load_functions(gl, (void *)glXGetProcAddressARB, glxstr, vo->log); + + 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. + +static GLXFBConfig select_fb_config(struct vo *vo, const int *attribs, bool alpha) +{ + 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). + GLXFBConfig fbconfig = fbcount > 0 ? fbc[0] : NULL; + + if (alpha) { + for (int n = 0; n < fbcount; n++) { + XVisualInfo *v = glXGetVisualFromFBConfig(vo->x11->display, fbc[n]); + if (v) { + bool is_rgba = vo_x11_is_rgba_visual(v); + XFree(v); + if (is_rgba) { + fbconfig = fbc[n]; + break; + } + } + } + } + + XFree(fbc); + + return fbconfig; +} + +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; + } + } +} + +static void glx_swap_buffers(struct ra_ctx *ctx) +{ + glXSwapBuffers(ctx->vo->x11->display, ctx->vo->x11->window); +} + +static bool glx_init(struct ra_ctx *ctx) +{ + struct priv *p = ctx->priv = talloc_zero(ctx, struct priv); + struct vo *vo = ctx->vo; + GL *gl = &p->gl; + + if (!vo_x11_init(ctx->vo)) + goto uninit; + + int glx_major, glx_minor; + + if (!glXQueryVersion(vo->x11->display, &glx_major, &glx_minor)) { + MP_ERR(ctx, "GLX not found.\n"); + goto uninit; + } + // FBConfigs were added in GLX version 1.3. + if (MPGL_VER(glx_major, glx_minor) < MPGL_VER(1, 3)) { + MP_ERR(ctx, "GLX version older than 1.3.\n"); + goto uninit; + } + + int glx_attribs[] = { + GLX_X_RENDERABLE, True, + GLX_X_VISUAL_TYPE, GLX_TRUE_COLOR, + GLX_RED_SIZE, 1, + GLX_GREEN_SIZE, 1, + GLX_BLUE_SIZE, 1, + GLX_ALPHA_SIZE, 0, + GLX_DOUBLEBUFFER, True, + None + }; + GLXFBConfig fbc = NULL; + if (ctx->opts.want_alpha) { + set_glx_attrib(glx_attribs, GLX_ALPHA_SIZE, 1); + fbc = select_fb_config(vo, glx_attribs, true); + if (!fbc) + set_glx_attrib(glx_attribs, GLX_ALPHA_SIZE, 0); + } + if (!fbc) + fbc = select_fb_config(vo, glx_attribs, false); + if (!fbc) { + MP_ERR(ctx, "no GLX support present\n"); + goto uninit; + } + + int fbid = -1; + if (!glXGetFBConfigAttrib(vo->x11->display, fbc, GLX_FBCONFIG_ID, &fbid)) + MP_VERBOSE(ctx, "GLX chose FB config with ID 0x%x\n", fbid); + + p->fbc = fbc; + p->vinfo = glXGetVisualFromFBConfig(vo->x11->display, fbc); + if (p->vinfo) { + MP_VERBOSE(ctx, "GLX chose visual with ID 0x%x\n", + (int)p->vinfo->visualid); + } else { + MP_WARN(ctx, "Selected GLX FB config has no associated X visual\n"); + } + + if (!vo_x11_create_vo_window(vo, p->vinfo, "gl")) + goto uninit; + + bool success = false; + for (int n = 0; mpgl_preferred_gl_versions[n]; n++) { + int version = mpgl_preferred_gl_versions[n]; + MP_VERBOSE(ctx, "Creating OpenGL %d.%d context...\n", + MPGL_VER_P(version)); + if (version >= 300) { + success = create_context_x11_gl3(ctx, gl, version, false); + } else { + success = create_context_x11_old(ctx, gl); + } + if (success) + break; + } + if (!success) // try again for GLES + success = create_context_x11_gl3(ctx, gl, 200, true); + if (success && !glXIsDirect(vo->x11->display, p->context)) + gl->mpgl_caps |= MPGL_CAP_SW; + if (!success) + goto uninit; + + struct ra_gl_ctx_params params = { + .swap_buffers = glx_swap_buffers, + }; + + if (!ra_gl_ctx_init(ctx, gl, params)) + goto uninit; + + return true; + +uninit: + glx_uninit(ctx); + return false; +} + +static bool glx_init_probe(struct ra_ctx *ctx) +{ + if (!glx_init(ctx)) + return false; + + struct priv *p = ctx->priv; + if (!(p->gl.mpgl_caps & MPGL_CAP_VDPAU)) { + MP_VERBOSE(ctx, "No vdpau support found - probing more things.\n"); + glx_uninit(ctx); + return false; + } + + return true; +} + +static void resize(struct ra_ctx *ctx) +{ + ra_gl_ctx_resize(ctx->swapchain, ctx->vo->dwidth, ctx->vo->dheight, 0); +} + +static bool glx_reconfig(struct ra_ctx *ctx) +{ + vo_x11_config_vo_window(ctx->vo); + resize(ctx); + return true; +} + +static int glx_control(struct ra_ctx *ctx, int *events, int request, void *arg) +{ + int ret = vo_x11_control(ctx->vo, events, request, arg); + if (*events & VO_EVENT_RESIZE) + resize(ctx); + return ret; +} + +static void glx_wakeup(struct ra_ctx *ctx) +{ + vo_x11_wakeup(ctx->vo); +} + +static void glx_wait_events(struct ra_ctx *ctx, int64_t until_time_us) +{ + vo_x11_wait_events(ctx->vo, until_time_us); +} + +const struct ra_ctx_fns ra_ctx_glx = { + .type = "opengl", + .name = "x11", + .reconfig = glx_reconfig, + .control = glx_control, + .wakeup = glx_wakeup, + .wait_events = glx_wait_events, + .init = glx_init, + .uninit = glx_uninit, +}; + +const struct ra_ctx_fns ra_ctx_glx_probe = { + .type = "opengl", + .name = "x11probe", + .reconfig = glx_reconfig, + .control = glx_control, + .wakeup = glx_wakeup, + .wait_events = glx_wait_events, + .init = glx_init_probe, + .uninit = glx_uninit, +}; |