swapchain_t device_create_swapchain(device_t device, struct gs_init_data *info)
{
struct gs_swap_chain *swap = bmalloc(sizeof(struct gs_swap_chain));
memset(swap, 0, sizeof(struct gs_swap_chain));
swap->device = device;
swap->info = *info;
swap->wi = gl_windowinfo_create(info);
if (!swap->wi) {
blog(LOG_ERROR, "device_create_swapchain (GL) failed");
swapchain_destroy(swap);
return NULL;
}
return swap;
}
gs_swapchain_t device_swapchain_create(gs_device_t device,
struct gs_init_data *info)
{
struct gs_swap_chain *swap = bzalloc(sizeof(struct gs_swap_chain));
swap->device = device;
swap->info = *info;
swap->wi = gl_windowinfo_create(info);
if (!swap->wi) {
blog(LOG_ERROR, "device_swapchain_create (GL) failed");
gs_swapchain_destroy(swap);
return NULL;
}
if (!gl_platform_init_swapchain(swap)) {
blog(LOG_ERROR, "gl_platform_init_swapchain failed");
gs_swapchain_destroy(swap);
return NULL;
}
return swap;
}
struct gl_platform *gl_platform_create(device_t device,
struct gs_init_data *info)
{
int num_configs = 0;
int error_base = 0, event_base = 0;
Display *display = XOpenDisplay(NULL); /* Open default screen */
struct gl_platform *plat = bmalloc(sizeof(struct gl_platform));
GLXFBConfig* configs;
print_info_stuff(info);
memset(plat, 0, sizeof(struct gl_platform));
if (!display) {
blog(LOG_ERROR, "Unable to find display. DISPLAY variable may not be set correctly.");
goto fail0;
}
if (!glx_LoadFunctions(display, DefaultScreen(display))) {
blog(LOG_ERROR, "Unable to load GLX entry functions.");
goto fail0;
}
if (!glXQueryExtension(display, &error_base, &event_base)) {
blog(LOG_ERROR, "GLX not supported.");
goto fail0;
}
/* We require glX version 1.4 */
{
int major = 0, minor = 0;
glXQueryVersion(display, &major, &minor);
if (major < 1 || minor < 4) {
blog(LOG_ERROR, "GLX version found: %i.%i\nRequired: 1.4", major, minor);
goto fail0;
}
}
if (!glx_ext_ARB_create_context) {
blog(LOG_ERROR, "ARB_GLX_create_context not supported!");
goto fail0;
}
configs = glXChooseFBConfig(display, DefaultScreen(display), fb_attribs, &num_configs);
if(!configs) {
blog(LOG_ERROR, "Attribute list or screen is invalid.");
goto fail0;
}
if(num_configs == 0) {
blog(LOG_ERROR, "No framebuffer configurations found.");
goto fail1;
}
/* We just use the first configuration found... as it does everything we want at the very least. */
plat->context = glXCreateContextAttribsARB(display, configs[0], NULL, True, ctx_attribs);
if(!plat->context) {
blog(LOG_ERROR, "Failed to create OpenGL context.");
goto fail1;
}
if(!glXMakeCurrent(display, info->window.id, plat->context)) {
blog(LOG_ERROR, "Failed to make context current.");
goto fail2;
}
if (!ogl_LoadFunctions()) {
blog(LOG_ERROR, "Failed to load OpenGL entry functions.");
goto fail2;
}
blog(LOG_INFO, "OpenGL version: %s\n", glGetString(GL_VERSION));
plat->swap.device = device;
plat->swap.info = *info;
plat->swap.wi = gl_windowinfo_create(info);
plat->swap.wi->display = display;
XFree(configs);
XSync(display, False);
return plat;
fail2:
glXMakeCurrent(display, None, NULL);
glXDestroyContext(display, plat->context);
fail1:
XFree(configs);
fail0:
bfree(plat);
return NULL;
}
struct gl_platform *gl_platform_create(device_t device,
struct gs_init_data *info)
{
int num_configs = 0;
int error_base = 0, event_base = 0;
Display *display = info->window.display;
struct gl_platform *plat = bzalloc(sizeof(struct gl_platform));
GLXFBConfig* configs;
XWindowAttributes attrs;
int screen;
int major = 0, minor = 0;
print_info_stuff(info);
if (!display) {
blog(LOG_ERROR, "Unable to find display. DISPLAY variable "
"may not be set correctly.");
goto fail0;
}
if (!XGetWindowAttributes(display, info->window.id, &attrs)) {
blog(LOG_ERROR, "Failed getting window attributes");
goto fail0;
}
screen = XScreenNumberOfScreen(attrs.screen);
if (!gladLoadGLX(display, screen)) {
blog(LOG_ERROR, "Unable to load GLX entry functions.");
goto fail0;
}
if (!glXQueryExtension(display, &error_base, &event_base)) {
blog(LOG_ERROR, "GLX not supported.");
goto fail0;
}
/* We require glX version 1.3 */
glXQueryVersion(display, &major, &minor);
if (major < 1 || (major == 1 && minor < 3)) {
blog(LOG_ERROR, "GLX version found: %i.%i\nRequired: "
"1.3", major, minor);
goto fail0;
}
if (!GLAD_GLX_ARB_create_context) {
blog(LOG_ERROR, "ARB_GLX_create_context not supported!");
goto fail0;
}
configs = glXChooseFBConfig(display, screen,
fb_attribs, &num_configs);
if (!configs) {
blog(LOG_ERROR, "Attribute list or screen is invalid.");
goto fail0;
}
if (num_configs == 0) {
XFree(configs);
blog(LOG_ERROR, "No framebuffer configurations found.");
goto fail0;
}
plat->fbcfg = configs[0];
XFree(configs);
handle_x_error(display, NULL);
/* We just use the first configuration found... as it does everything
* we want at the very least. */
plat->context = glXCreateContextAttribsARB(display, plat->fbcfg, NULL,
true, ctx_attribs);
if (!plat->context) {
blog(LOG_ERROR, "Failed to create OpenGL context.");
goto fail0;
}
if (handle_x_error(display, "Failed to create OpenGL context."))
goto fail2;
device->plat = plat;
plat->swap.device = device;
plat->swap.info.window.id = info->window.id;
plat->swap.info.window.display = display;
plat->swap.info.format = GS_RGBA;
plat->swap.info.zsformat = GS_Z24_S8;
plat->swap.info.num_backbuffers = 1;
plat->swap.info.adapter = info->adapter;
plat->swap.info.cx = attrs.width;
plat->swap.info.cy = attrs.height;
plat->swap.wi = gl_windowinfo_create(info);
if (!gl_platform_init_swapchain(&plat->swap))
goto fail2;
if (!glXMakeCurrent(display, plat->swap.wi->glxid, plat->context)) {
blog(LOG_ERROR, "Failed to make context current.");
goto fail2;
}
if (!gladLoadGL()) {
blog(LOG_ERROR, "Failed to load OpenGL entry functions.");
goto fail2;
}
blog(LOG_INFO, "OpenGL version: %s\n", glGetString(GL_VERSION));
/* We assume later that cur_swap is already set. */
device->cur_swap = &plat->swap;
XSync(display, false);
blog(LOG_INFO, "Created new platform data");
return plat;
fail2:
glXMakeCurrent(display, None, NULL);
glXDestroyContext(display, plat->context);
gl_platform_cleanup_swapchain(&plat->swap);
fail0:
bfree(plat);
device->plat = 0;
return NULL;
}
extern struct gl_platform *gl_platform_create(gs_device_t *device,
const struct gs_init_data *info)
{
/* There's some trickery here... we're mixing libX11, xcb, and GLX
For an explanation see here: http://xcb.freedesktop.org/MixingCalls/
Essentially, GLX requires Xlib. Everything else we use xcb. */
struct gl_windowinfo *wi = gl_windowinfo_create(info);
struct gl_platform * plat = bmalloc(sizeof(struct gl_platform));
Display * display;
print_info_stuff(info);
if (!wi) {
blog(LOG_ERROR, "Failed to create window info!");
goto fail_wi_create;
}
display = XOpenDisplay(XDisplayString(info->window.display));
if (!display) {
blog(LOG_ERROR, "Unable to open new X connection!");
goto fail_display_open;
}
XSetEventQueueOwner(display, XCBOwnsEventQueue);
XSetErrorHandler(x_error_handler);
/* We assume later that cur_swap is already set. */
device->cur_swap = &plat->swap;
device->plat = plat;
plat->display = display;
plat->swap.device = device;
plat->swap.info = *info;
plat->swap.wi = wi;
if (!gl_platform_init_swapchain(&plat->swap)) {
blog(LOG_ERROR, "Failed to initialize swap chain!");
goto fail_init_swapchain;
}
if (!gl_context_create(plat)) {
blog(LOG_ERROR, "Failed to create context!");
goto fail_context_create;
}
if (!glXMakeCurrent(plat->display, wi->window, plat->context)) {
blog(LOG_ERROR, "Failed to make context current.");
goto fail_make_current;
}
if (!gladLoadGL()) {
blog(LOG_ERROR, "Failed to load OpenGL entry functions.");
goto fail_load_gl;
}
blog(LOG_INFO, "OpenGL version: %s\n", glGetString(GL_VERSION));
goto success;
fail_make_current:
gl_context_destroy(plat);
fail_context_create:
fail_load_gl:
fail_init_swapchain:
XCloseDisplay(display);
fail_display_open:
fail_wi_create:
gl_windowinfo_destroy(wi);
free(plat);
plat = NULL;
success:
return plat;
}