summaryrefslogtreecommitdiffstats
path: root/video/out/opengl/gl_x11.c
diff options
context:
space:
mode:
Diffstat (limited to 'video/out/opengl/gl_x11.c')
-rw-r--r--video/out/opengl/gl_x11.c307
1 files changed, 307 insertions, 0 deletions
diff --git a/video/out/opengl/gl_x11.c b/video/out/opengl/gl_x11.c
new file mode 100644
index 0000000000..2eec57921b
--- /dev/null
+++ b/video/out/opengl/gl_x11.c
@@ -0,0 +1,307 @@
+/*
+ * This file is part of mpv.
+ *
+ * mpv 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.
+ *
+ * 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with mpv. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * 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 "video/out/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;
+
+ if (!glx_ctx->vinfo) {
+ MP_FATAL(vo, "Can't create a legacy GLX context without X visual\n");
+ return false;
+ }
+
+ GLXContext new_context = glXCreateContext(display, glx_ctx->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);
+
+ glx_ctx->context = new_context;
+
+ return true;
+}
+
+typedef GLXContext (*glXCreateContextAttribsARBProc)
+ (Display*, GLXFBConfig, GLXContext, Bool, const int*);
+
+static bool create_context_x11_gl3(struct MPGLContext *ctx, int vo_flags,
+ int gl_version, bool es)
+{
+ 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 =
+ 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 = vo_flags & VOFLAG_GL_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
+ };
+ GLXContext context = glXCreateContextAttribsARB(vo->x11->display,
+ glx_ctx->fbc, 0, True,
+ context_attribs);
+ if (!context) {
+ MP_INFO(vo, "Could not create GL3 context. Retrying with legacy context.\n");
+ 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;
+ }
+
+ glx_ctx->context = context;
+
+ mpgl_load_functions(ctx->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, int flags)
+{
+ 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 (flags & VOFLAG_ALPHA) {
+ for (int n = 0; n < fbcount; n++) {
+ XVisualInfo *v = glXGetVisualFromFBConfig(vo->x11->display, fbc[n]);
+ if (!v)
+ continue;
+ // 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;
+ }
+ }
+ }
+
+ 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 bool config_window_x11(struct MPGLContext *ctx, int flags)
+{
+ struct vo *vo = ctx->vo;
+ struct glx_context *glx_ctx = ctx->priv;
+
+ int glx_major, glx_minor;
+
+ if (!glXQueryVersion(vo->x11->display, &glx_major, &glx_minor)) {
+ MP_ERR(vo, "GLX not found.\n");
+ return false;
+ }
+ // FBConfigs were added in GLX version 1.3.
+ if (MPGL_VER(glx_major, glx_minor) < MPGL_VER(1, 3)) {
+ MP_ERR(vo, "GLX version older than 1.3.\n");
+ return false;
+ }
+
+ 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 (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;
+ }
+ }
+ if (!fbc)
+ fbc = select_fb_config(vo, glx_attribs, flags);
+ if (!fbc) {
+ MP_ERR(vo, "no GLX support present\n");
+ return false;
+ }
+ MP_VERBOSE(vo, "GLX chose FB config with ID 0x%x\n", (int)(intptr_t)fbc);
+
+ glx_ctx->fbc = fbc;
+ glx_ctx->vinfo = glXGetVisualFromFBConfig(vo->x11->display, fbc);
+ if (glx_ctx->vinfo) {
+ MP_VERBOSE(vo, "GLX chose visual with ID 0x%x\n",
+ (int)glx_ctx->vinfo->visualid);
+ } else {
+ MP_WARN(vo, "Selected GLX FB config has no associated X visual\n");
+ }
+
+
+ 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);
+
+ vo_x11_config_vo_window(vo, glx_ctx->vinfo, flags | VOFLAG_HIDDEN, "gl");
+
+ bool success = false;
+ if (!(flags & VOFLAG_GLES)) {
+ success = create_context_x11_gl3(ctx, flags, 300, false);
+ if (!success)
+ success = create_context_x11_old(ctx);
+ }
+ if (!success) // try ES
+ success = create_context_x11_gl3(ctx, flags, 200, true);
+ if (success && !glXIsDirect(vo->x11->display, glx_ctx->context))
+ ctx->gl->mpgl_caps |= MPGL_CAP_SW;
+ return success;
+}
+
+static int glx_init(struct MPGLContext *ctx, int vo_flags)
+{
+ if (vo_x11_init(ctx->vo) && config_window_x11(ctx, vo_flags))
+ return 0;
+ vo_x11_uninit(ctx->vo);
+ return -1;
+}
+
+static int glx_reconfig(struct MPGLContext *ctx, int flags)
+{
+ struct glx_context *glx_ctx = ctx->priv;
+ vo_x11_config_vo_window(ctx->vo, glx_ctx->vinfo, flags, "gl");
+ return 0;
+}
+
+static int glx_control(struct MPGLContext *ctx, int *events, int request,
+ void *arg)
+{
+ return vo_x11_control(ctx->vo, events, request, arg);
+}
+
+static void glx_uninit(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;
+ if (*vinfo)
+ XFree(*vinfo);
+ if (*context) {
+ glXMakeCurrent(display, None, NULL);
+ glXDestroyContext(display, *context);
+ }
+ vo_x11_uninit(ctx->vo);
+}
+
+static void glx_swap_buffers(struct MPGLContext *ctx)
+{
+ glXSwapBuffers(ctx->vo->x11->display, ctx->vo->x11->window);
+}
+
+const struct mpgl_driver mpgl_driver_x11 = {
+ .name = "x11",
+ .priv_size = sizeof(struct glx_context),
+ .init = glx_init,
+ .reconfig = glx_reconfig,
+ .swap_buffers = glx_swap_buffers,
+ .control = glx_control,
+ .uninit = glx_uninit,
+}; \ No newline at end of file