initHEADmaster

1 files changed, 526 insertions, 0 deletions

diff --git a/src/egl.c b/src/egl.c
new file mode 100644
index 0000000..ce97178
--- /dev/null
+++ b/src/egl.c
@@ -0,0 +1,526 @@
+#include "../include/egl.h"
+#include "../include/window/window.h"
+#include "../include/library_loader.h"
+#include "../include/utils.h"
+
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <dlfcn.h>
+#include <assert.h>
+#include <unistd.h>
+
+// TODO: rename gsr_egl to something else since this includes both egl and glx and in the future maybe vulkan too
+
+#define GLX_DRAWABLE_TYPE                  0x8010
+#define GLX_RENDER_TYPE                    0x8011
+#define GLX_RGBA_BIT                       0x00000001
+#define GLX_WINDOW_BIT                     0x00000001
+#define GLX_PIXMAP_BIT                     0x00000002
+#define GLX_BIND_TO_TEXTURE_RGBA_EXT       0x20D1
+#define GLX_BIND_TO_TEXTURE_TARGETS_EXT    0x20D3
+#define GLX_TEXTURE_2D_BIT_EXT             0x00000002
+#define GLX_DOUBLEBUFFER                   5
+#define GLX_RED_SIZE                       8
+#define GLX_GREEN_SIZE                     9
+#define GLX_BLUE_SIZE                      10
+#define GLX_ALPHA_SIZE                     11
+#define GLX_DEPTH_SIZE                     12
+#define GLX_RGBA_TYPE                      0x8014
+
+// TODO: Create egl context without surface (in other words, x11/wayland agnostic, doesn't require x11/wayland dependency)
+static bool gsr_egl_create_window(gsr_egl *self, bool enable_debug) {
+    EGLConfig  ecfg;
+    int32_t    num_config = 0;
+
+    const int32_t attr[] = {
+        EGL_BUFFER_SIZE, 24,
+        EGL_RENDERABLE_TYPE, EGL_OPENGL_ES3_BIT,
+        EGL_NONE, EGL_NONE
+    };
+
+    int32_t ctxattr[] = {
+        EGL_CONTEXT_CLIENT_VERSION, 3,
+        EGL_NONE, EGL_NONE, EGL_NONE
+    };
+
+    if(enable_debug) {
+        ctxattr[2] = EGL_CONTEXT_OPENGL_DEBUG;
+        ctxattr[3] = EGL_TRUE;
+    }
+
+    self->eglBindAPI(EGL_OPENGL_ES_API);
+
+    self->egl_display = self->eglGetDisplay((EGLNativeDisplayType)gsr_window_get_display(self->window));
+    if(!self->egl_display) {
+        fprintf(stderr, "gsr error: gsr_egl_create_window failed: eglGetDisplay failed\n");
+        goto fail;
+    }
+
+    if(!self->eglInitialize(self->egl_display, NULL, NULL)) {
+        fprintf(stderr, "gsr error: gsr_egl_create_window failed: eglInitialize failed\n");
+        goto fail;
+    }
+
+    if(!self->eglChooseConfig(self->egl_display, attr, &ecfg, 1, &num_config) || num_config != 1) {
+        fprintf(stderr, "gsr error: gsr_egl_create_window failed: failed to find a matching config\n");
+        goto fail;
+    }
+
+    self->egl_context = self->eglCreateContext(self->egl_display, ecfg, NULL, ctxattr);
+    if(!self->egl_context) {
+        fprintf(stderr, "gsr error: gsr_egl_create_window failed: failed to create egl context\n");
+        goto fail;
+    }
+
+    self->egl_surface = self->eglCreateWindowSurface(self->egl_display, ecfg, (EGLNativeWindowType)gsr_window_get_window(self->window), NULL);
+    if(!self->egl_surface) {
+        fprintf(stderr, "gsr error: gsr_egl_create_window failed: failed to create window surface\n");
+        goto fail;
+    }
+
+    if(!self->eglMakeCurrent(self->egl_display, self->egl_surface, self->egl_surface, self->egl_context)) {
+        fprintf(stderr, "gsr error: gsr_egl_create_window failed: failed to make egl context current\n");
+        goto fail;
+    }
+
+    return true;
+
+    fail:
+    gsr_egl_unload(self);
+    return false;
+}
+
+static GLXFBConfig glx_fb_config_choose(gsr_egl *self, Display *display) {
+    // TODO: OpenGL debug context?
+    const int glx_visual_attribs[] = {
+        GLX_RENDER_TYPE, GLX_RGBA_BIT,
+        GLX_DRAWABLE_TYPE, GLX_WINDOW_BIT,
+        // TODO:
+        //GLX_BIND_TO_TEXTURE_RGBA_EXT, 1,
+        //GLX_BIND_TO_TEXTURE_TARGETS_EXT, GLX_TEXTURE_2D_BIT_EXT,
+        GLX_DOUBLEBUFFER, True,
+        GLX_RED_SIZE, 8,
+        GLX_GREEN_SIZE, 8,
+        GLX_BLUE_SIZE, 8,
+        GLX_ALPHA_SIZE, 0,
+        GLX_DEPTH_SIZE, 0,
+        None, None
+    };
+
+    // TODO: Cleanup
+    int c = 0;
+    GLXFBConfig *fb_configs = self->glXChooseFBConfig(display, DefaultScreen(display), glx_visual_attribs, &c);
+    if(c == 0 || !fb_configs)
+        return NULL;
+
+    return fb_configs[0];
+}
+
+static bool gsr_egl_switch_to_glx_context(gsr_egl *self) {
+    // TODO: Cleanup
+    assert(gsr_window_get_display_server(self->window) == GSR_DISPLAY_SERVER_X11);
+    Display *display = gsr_window_get_display(self->window);
+    const Window window = (Window)gsr_window_get_window(self->window);
+
+    if(self->egl_context) {
+        self->eglMakeCurrent(self->egl_display, NULL, NULL, NULL);
+        self->eglDestroyContext(self->egl_display, self->egl_context);
+        self->egl_context = NULL;
+    }
+
+    if(self->egl_surface) {
+        self->eglDestroySurface(self->egl_display, self->egl_surface);
+        self->egl_surface = NULL;
+    }
+
+    if(self->egl_display) {
+        self->eglTerminate(self->egl_display);
+        self->egl_display = NULL;
+    }
+
+    self->glx_fb_config = glx_fb_config_choose(self, display);
+    if(!self->glx_fb_config) {
+        fprintf(stderr, "gsr error: gsr_egl_create_window failed: failed to find a suitable fb config\n");
+        goto fail;
+    }
+
+    // TODO:
+    //self->glx_context = self->glXCreateContextAttribsARB(display, self->glx_fb_config, NULL, True, context_attrib_list);
+    self->glx_context = self->glXCreateNewContext(display, self->glx_fb_config, GLX_RGBA_TYPE, NULL, True);
+    if(!self->glx_context) {
+        fprintf(stderr, "gsr error: gsr_egl_create_window failed: failed to create glx context\n");
+        goto fail;
+    }
+
+    if(!self->glXMakeContextCurrent(display, window, window, self->glx_context)) {
+        fprintf(stderr, "gsr error: gsr_egl_create_window failed: failed to make glx context current\n");
+        goto fail;
+    }
+
+    return true;
+
+    fail:
+    if(self->glx_context) {
+        self->glXMakeContextCurrent(display, None, None, NULL);
+        self->glXDestroyContext(display, self->glx_context);
+        self->glx_context = NULL;
+        self->glx_fb_config = NULL;
+    }
+    return false;
+}
+
+static bool gsr_egl_load_egl(gsr_egl *self, void *library) {
+    const dlsym_assign required_dlsym[] = {
+        { (void**)&self->eglGetError, "eglGetError" },
+        { (void**)&self->eglGetDisplay, "eglGetDisplay" },
+        { (void**)&self->eglInitialize, "eglInitialize" },
+        { (void**)&self->eglTerminate, "eglTerminate" },
+        { (void**)&self->eglChooseConfig, "eglChooseConfig" },
+        { (void**)&self->eglCreateWindowSurface, "eglCreateWindowSurface" },
+        { (void**)&self->eglCreateContext, "eglCreateContext" },
+        { (void**)&self->eglMakeCurrent, "eglMakeCurrent" },
+        { (void**)&self->eglCreateImage, "eglCreateImage" },
+        { (void**)&self->eglDestroyContext, "eglDestroyContext" },
+        { (void**)&self->eglDestroySurface, "eglDestroySurface" },
+        { (void**)&self->eglDestroyImage, "eglDestroyImage" },
+        { (void**)&self->eglSwapInterval, "eglSwapInterval" },
+        { (void**)&self->eglSwapBuffers, "eglSwapBuffers" },
+        { (void**)&self->eglBindAPI, "eglBindAPI" },
+        { (void**)&self->eglGetProcAddress, "eglGetProcAddress" },
+
+        { NULL, NULL }
+    };
+
+    if(!dlsym_load_list(library, required_dlsym)) {
+        fprintf(stderr, "gsr error: gsr_egl_load failed: missing required symbols in libEGL.so.1\n");
+        return false;
+    }
+
+    return true;
+}
+
+static bool gsr_egl_proc_load_egl(gsr_egl *self) {
+    self->eglExportDMABUFImageQueryMESA = (FUNC_eglExportDMABUFImageQueryMESA)self->eglGetProcAddress("eglExportDMABUFImageQueryMESA");
+    self->eglExportDMABUFImageMESA = (FUNC_eglExportDMABUFImageMESA)self->eglGetProcAddress("eglExportDMABUFImageMESA");
+    self->glEGLImageTargetTexture2DOES = (FUNC_glEGLImageTargetTexture2DOES)self->eglGetProcAddress("glEGLImageTargetTexture2DOES");
+    self->eglQueryDisplayAttribEXT = (FUNC_eglQueryDisplayAttribEXT)self->eglGetProcAddress("eglQueryDisplayAttribEXT");
+    self->eglQueryDeviceStringEXT = (FUNC_eglQueryDeviceStringEXT)self->eglGetProcAddress("eglQueryDeviceStringEXT");
+    self->eglQueryDmaBufModifiersEXT = (FUNC_eglQueryDmaBufModifiersEXT)self->eglGetProcAddress("eglQueryDmaBufModifiersEXT");
+
+    self->glCreateMemoryObjectsEXT = (FUNC_glCreateMemoryObjectsEXT)self->eglGetProcAddress("glCreateMemoryObjectsEXT");
+    self->glImportMemoryFdEXT = (FUNC_glImportMemoryFdEXT)self->eglGetProcAddress("glImportMemoryFdEXT");
+    self->glIsMemoryObjectEXT = (FUNC_glIsMemoryObjectEXT)self->eglGetProcAddress("glIsMemoryObjectEXT");
+    self->glTexStorageMem2DEXT = (FUNC_glTexStorageMem2DEXT)self->eglGetProcAddress("glTexStorageMem2DEXT");
+    self->glBufferStorageMemEXT = (FUNC_glBufferStorageMemEXT)self->eglGetProcAddress("glBufferStorageMemEXT");
+    self->glNamedBufferStorageMemEXT = (FUNC_glNamedBufferStorageMemEXT)self->eglGetProcAddress("glNamedBufferStorageMemEXT");
+    self->glMemoryObjectParameterivEXT = (FUNC_glMemoryObjectParameterivEXT)self->eglGetProcAddress("glMemoryObjectParameterivEXT");
+
+    if(!self->eglExportDMABUFImageQueryMESA) {
+        fprintf(stderr, "gsr error: gsr_egl_load failed: could not find eglExportDMABUFImageQueryMESA\n");
+        return false;
+    }
+
+    if(!self->eglExportDMABUFImageMESA) {
+        fprintf(stderr, "gsr error: gsr_egl_load failed: could not find eglExportDMABUFImageMESA\n");
+        return false;
+    }
+
+    if(!self->glEGLImageTargetTexture2DOES) {
+        fprintf(stderr, "gsr error: gsr_egl_load failed: could not find glEGLImageTargetTexture2DOES\n");
+        return false;
+    }
+
+    return true;
+}
+
+static bool gsr_egl_load_glx(gsr_egl *self, void *library) {
+    const dlsym_assign required_dlsym[] = {
+        { (void**)&self->glXGetProcAddress, "glXGetProcAddress" },
+        { (void**)&self->glXChooseFBConfig, "glXChooseFBConfig" },
+        { (void**)&self->glXMakeContextCurrent, "glXMakeContextCurrent" },
+        { (void**)&self->glXCreateNewContext, "glXCreateNewContext" },
+        { (void**)&self->glXDestroyContext, "glXDestroyContext" },
+        { (void**)&self->glXSwapBuffers, "glXSwapBuffers" },
+
+        { NULL, NULL }
+    };
+
+    if(!dlsym_load_list(library, required_dlsym)) {
+        fprintf(stderr, "gsr error: gsr_egl_load failed: missing required symbols in libGLX.so.0\n");
+        return false;
+    }
+
+    self->glXCreateContextAttribsARB = (FUNC_glXCreateContextAttribsARB)self->glXGetProcAddress((const unsigned char*)"glXCreateContextAttribsARB");
+    if(!self->glXCreateContextAttribsARB) {
+        fprintf(stderr, "gsr error: gsr_egl_load_glx failed: could not find glXCreateContextAttribsARB\n");
+        return false;
+    }
+
+    self->glXSwapIntervalEXT = (FUNC_glXSwapIntervalEXT)self->glXGetProcAddress((const unsigned char*)"glXSwapIntervalEXT");
+    self->glXSwapIntervalMESA = (FUNC_glXSwapIntervalMESA)self->glXGetProcAddress((const unsigned char*)"glXSwapIntervalMESA");
+    self->glXSwapIntervalSGI = (FUNC_glXSwapIntervalSGI)self->glXGetProcAddress((const unsigned char*)"glXSwapIntervalSGI");
+
+    return true;
+}
+
+static bool gsr_egl_load_gl(gsr_egl *self, void *library) {
+    const dlsym_assign required_dlsym[] = {
+        { (void**)&self->glGetError, "glGetError" },
+        { (void**)&self->glGetString, "glGetString" },
+        { (void**)&self->glFlush, "glFlush" },
+        { (void**)&self->glFinish, "glFinish" },
+        { (void**)&self->glClear, "glClear" },
+        { (void**)&self->glClearColor, "glClearColor" },
+        { (void**)&self->glGenTextures, "glGenTextures" },
+        { (void**)&self->glDeleteTextures, "glDeleteTextures" },
+        { (void**)&self->glActiveTexture, "glActiveTexture" },
+        { (void**)&self->glBindTexture, "glBindTexture" },
+        { (void**)&self->glBindImageTexture, "glBindImageTexture" },
+        { (void**)&self->glTexParameteri, "glTexParameteri" },
+        { (void**)&self->glTexParameteriv, "glTexParameteriv" },
+        { (void**)&self->glTexParameterfv, "glTexParameterfv" },
+        { (void**)&self->glTexImage2D, "glTexImage2D" },
+        { (void**)&self->glTexSubImage2D, "glTexSubImage2D" },
+        { (void**)&self->glTexStorage2D, "glTexStorage2D" },
+        { (void**)&self->glGetTexImage, "glGetTexImage" },
+        { (void**)&self->glGenFramebuffers, "glGenFramebuffers" },
+        { (void**)&self->glBindFramebuffer, "glBindFramebuffer" },
+        { (void**)&self->glDeleteFramebuffers, "glDeleteFramebuffers" },
+        { (void**)&self->glMemoryBarrier, "glMemoryBarrier" },
+        { (void**)&self->glViewport, "glViewport" },
+        { (void**)&self->glFramebufferTexture2D, "glFramebufferTexture2D" },
+        { (void**)&self->glDrawBuffers, "glDrawBuffers" },
+        { (void**)&self->glCheckFramebufferStatus, "glCheckFramebufferStatus" },
+        { (void**)&self->glBindBuffer, "glBindBuffer" },
+        { (void**)&self->glGenBuffers, "glGenBuffers" },
+        { (void**)&self->glBufferData, "glBufferData" },
+        { (void**)&self->glBufferSubData, "glBufferSubData" },
+        { (void**)&self->glDeleteBuffers, "glDeleteBuffers" },
+        { (void**)&self->glGenVertexArrays, "glGenVertexArrays" },
+        { (void**)&self->glBindVertexArray, "glBindVertexArray" },
+        { (void**)&self->glDeleteVertexArrays, "glDeleteVertexArrays" },
+        { (void**)&self->glCreateProgram, "glCreateProgram" },
+        { (void**)&self->glCreateShader, "glCreateShader" },
+        { (void**)&self->glAttachShader, "glAttachShader" },
+        { (void**)&self->glBindAttribLocation, "glBindAttribLocation" },
+        { (void**)&self->glCompileShader, "glCompileShader" },
+        { (void**)&self->glLinkProgram, "glLinkProgram" },
+        { (void**)&self->glShaderSource, "glShaderSource" },
+        { (void**)&self->glUseProgram, "glUseProgram" },
+        { (void**)&self->glGetProgramInfoLog, "glGetProgramInfoLog" },
+        { (void**)&self->glGetShaderiv, "glGetShaderiv" },
+        { (void**)&self->glGetShaderInfoLog, "glGetShaderInfoLog" },
+        { (void**)&self->glDeleteProgram, "glDeleteProgram" },
+        { (void**)&self->glDeleteShader, "glDeleteShader" },
+        { (void**)&self->glGetProgramiv, "glGetProgramiv" },
+        { (void**)&self->glVertexAttribPointer, "glVertexAttribPointer" },
+        { (void**)&self->glEnableVertexAttribArray, "glEnableVertexAttribArray" },
+        { (void**)&self->glDrawArrays, "glDrawArrays" },
+        { (void**)&self->glEnable, "glEnable" },
+        { (void**)&self->glDisable, "glDisable" },
+        { (void**)&self->glBlendFunc, "glBlendFunc" },
+        { (void**)&self->glPixelStorei, "glPixelStorei" },
+        { (void**)&self->glGetUniformLocation, "glGetUniformLocation" },
+        { (void**)&self->glUniform1f, "glUniform1f" },
+        { (void**)&self->glUniform2f, "glUniform2f" },
+        { (void**)&self->glUniform1i, "glUniform1i" },
+        { (void**)&self->glUniform2i, "glUniform2i" },
+        { (void**)&self->glUniformMatrix2fv, "glUniformMatrix2fv" },
+        { (void**)&self->glDebugMessageCallback, "glDebugMessageCallback" },
+        { (void**)&self->glScissor, "glScissor" },
+        { (void**)&self->glReadPixels, "glReadPixels" },
+        { (void**)&self->glMapBufferRange, "glMapBufferRange" },
+        { (void**)&self->glUnmapBuffer, "glUnmapBuffer" },
+        { (void**)&self->glGetIntegerv, "glGetIntegerv" },
+
+        { NULL, NULL }
+    };
+
+    if(!dlsym_load_list(library, required_dlsym)) {
+        fprintf(stderr, "gsr error: gsr_egl_load failed: missing required symbols in libGL.so.1\n");
+        return false;
+    }
+
+    return true;
+}
+
+#define GL_DEBUG_TYPE_ERROR               0x824C
+#define GL_DEBUG_SEVERITY_NOTIFICATION    0x826B
+static void debug_callback(unsigned int source, unsigned int type, unsigned int id, unsigned int severity, int length, const char* message, const void* userParam) {
+    (void)source;
+    (void)id;
+    (void)length;
+    (void)userParam;
+    if(severity != GL_DEBUG_SEVERITY_NOTIFICATION)
+        fprintf(stderr, "gsr info: gl callback: %s type = 0x%x, severity = 0x%x, message = %s\n", type == GL_DEBUG_TYPE_ERROR ? "** GL ERROR **" : "", type, severity, message);
+}
+
+/* TODO: check for glx swap control extension string (GLX_EXT_swap_control, etc) */
+static void set_vertical_sync_enabled(gsr_egl *egl, int enabled) {
+    int result = 0;
+
+    if(egl->glXSwapIntervalEXT) {
+        assert(gsr_window_get_display_server(egl->window) == GSR_DISPLAY_SERVER_X11);
+        Display *display = gsr_window_get_display(egl->window);
+        const Window window = (Window)gsr_window_get_window(egl->window);
+        egl->glXSwapIntervalEXT(display, window, enabled ? 1 : 0);
+    } else if(egl->glXSwapIntervalMESA) {
+        result = egl->glXSwapIntervalMESA(enabled ? 1 : 0);
+    } else if(egl->glXSwapIntervalSGI) {
+        result = egl->glXSwapIntervalSGI(enabled ? 1 : 0);
+    } else {
+        static int warned = 0;
+        if (!warned) {
+            warned = 1;
+            fprintf(stderr, "gsr warning: setting vertical sync not supported\n");
+        }
+    }
+
+    if(result != 0)
+        fprintf(stderr, "gsr warning: setting vertical sync failed\n");
+}
+
+static void gsr_egl_disable_vsync(gsr_egl *self) {
+    switch(self->context_type) {
+        case GSR_GL_CONTEXT_TYPE_EGL: {
+            self->eglSwapInterval(self->egl_display, 0);
+            break;
+        }
+        case GSR_GL_CONTEXT_TYPE_GLX: {
+            set_vertical_sync_enabled(self, 0);
+            break;
+        }
+    }
+}
+
+bool gsr_egl_load(gsr_egl *self, gsr_window *window, bool is_monitor_capture, bool enable_debug) {
+    memset(self, 0, sizeof(gsr_egl));
+    self->context_type = GSR_GL_CONTEXT_TYPE_EGL;
+    self->window = window;
+
+    dlerror(); /* clear */
+    self->egl_library = dlopen("libEGL.so.1", RTLD_LAZY);
+    if(!self->egl_library) {
+        fprintf(stderr, "gsr error: gsr_egl_load: failed to load libEGL.so.1, error: %s\n", dlerror());
+        goto fail;
+    }
+
+    self->glx_library = dlopen("libGLX.so.0", RTLD_LAZY);
+
+    self->gl_library = dlopen("libGL.so.1", RTLD_LAZY);
+    if(!self->gl_library) {
+        fprintf(stderr, "gsr error: gsr_egl_load: failed to load libGL.so.1, error: %s\n", dlerror());
+        goto fail;
+    }
+
+    if(!gsr_egl_load_egl(self, self->egl_library))
+        goto fail;
+
+    /* In some distros (alpine for example libGLX doesn't exist, but libGL can be used instead) */
+    if(!gsr_egl_load_glx(self, self->glx_library ? self->glx_library : self->gl_library))
+        goto fail;
+
+    if(!gsr_egl_load_gl(self, self->gl_library))
+        goto fail;
+
+    if(!gsr_egl_proc_load_egl(self))
+        goto fail;
+
+    if(!gsr_egl_create_window(self, enable_debug))
+        goto fail;
+
+    if(!gl_get_gpu_info(self, &self->gpu_info))
+        goto fail;
+
+    if(self->eglQueryDisplayAttribEXT && self->eglQueryDeviceStringEXT) {
+        intptr_t device = 0;
+        if(self->eglQueryDisplayAttribEXT(self->egl_display, EGL_DEVICE_EXT, &device) && device)
+            self->dri_card_path = self->eglQueryDeviceStringEXT((void*)device, EGL_DRM_DEVICE_FILE_EXT);
+    }
+
+    /* Nvfbc requires glx */
+    if(gsr_window_get_display_server(self->window) == GSR_DISPLAY_SERVER_X11 && is_monitor_capture && self->gpu_info.vendor == GSR_GPU_VENDOR_NVIDIA) {
+        self->context_type = GSR_GL_CONTEXT_TYPE_GLX;
+        self->dri_card_path = NULL;
+        if(!gsr_egl_switch_to_glx_context(self))
+            goto fail;
+    }
+
+    if(enable_debug) {
+        self->glEnable(GL_DEBUG_OUTPUT_SYNCHRONOUS);
+        self->glDebugMessageCallback(debug_callback, NULL);
+    }
+
+    self->glEnable(GL_BLEND);
+    self->glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+    self->glPixelStorei(GL_PACK_ALIGNMENT, 1);
+    self->glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
+
+    gsr_egl_disable_vsync(self);
+
+    if(self->gpu_info.vendor == GSR_GPU_VENDOR_NVIDIA) {
+        /* This fixes nvenc codecs unable to load on openSUSE tumbleweed because of a cuda error. Don't ask me why */
+        const bool inside_flatpak = getenv("FLATPAK_ID") != NULL;
+        if(inside_flatpak)
+            system("flatpak-spawn --host -- sh -c 'grep -q openSUSE /etc/os-release && nvidia-smi -f /dev/null'");
+        else
+            system("sh -c 'grep -q openSUSE /etc/os-release && nvidia-smi -f /dev/null'");
+    }
+
+    return true;
+
+    fail:
+    gsr_egl_unload(self);
+    return false;
+}
+
+void gsr_egl_unload(gsr_egl *self) {
+    if(self->egl_context) {
+        self->eglMakeCurrent(self->egl_display, NULL, NULL, NULL);
+        self->eglDestroyContext(self->egl_display, self->egl_context);
+        self->egl_context = NULL;
+    }
+
+    if(self->egl_surface) {
+        self->eglDestroySurface(self->egl_display, self->egl_surface);
+        self->egl_surface = NULL;
+    }
+
+    if(self->egl_display) {
+        self->eglTerminate(self->egl_display);
+        self->egl_display = NULL;
+    }
+
+    if(self->glx_context) {
+        assert(gsr_window_get_display_server(self->window) == GSR_DISPLAY_SERVER_X11);
+        Display *display = gsr_window_get_display(self->window);
+        self->glXMakeContextCurrent(display, None, None, NULL);
+        self->glXDestroyContext(display, self->glx_context);
+        self->glx_context = NULL;
+        self->glx_fb_config = NULL;
+    }
+
+    if(self->egl_library) {
+        dlclose(self->egl_library);
+        self->egl_library = NULL;
+    }
+
+    if(self->glx_library) {
+        dlclose(self->glx_library);
+        self->glx_library = NULL;
+    }
+
+    if(self->gl_library) {
+        dlclose(self->gl_library);
+        self->gl_library = NULL;
+    }
+
+    memset(self, 0, sizeof(gsr_egl));
+}
+
+void gsr_egl_swap_buffers(gsr_egl *self) {
+    self->glFlush();
+    // TODO: Use the minimal barrier required
+    self->glMemoryBarrier(GL_ALL_BARRIER_BITS); // GL_SHADER_IMAGE_ACCESS_BARRIER_BIT
+}