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X11:: Add native access to X11 visual and XCB connection
Exposed via glfwGetX11Visual and glfwGetXCBConnection, these are useful when doing custom Vulkan surface creation.
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@ -121,6 +121,8 @@ information on what to include when reporting a bug.
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## Changelog
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- Added `glfwGetX11Visual` and `glfwGetXCBConnection`
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native functions for accessing X11 visual and XCB connection handle
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- Added `GLFW_PLATFORM` init hint for runtime platform selection (#1958)
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- Added `GLFW_ANY_PLATFORM`, `GLFW_PLATFORM_WIN32`, `GLFW_PLATFORM_COCOA`,
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`GLFW_PLATFORM_WAYLAND`, `GLFW_PLATFORM_X11` and `GLFW_PLATFORM_NULL` symbols to
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@ -9,6 +9,13 @@
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@subsection features_34 New features in version 3.4
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@subsection native_x11_visual_and_xcb_connection_34 X11 native Visual and XCB connection access
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GLFW now supports X11 platform specific native functions for accessing
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the X11 visual and XCB connection handle:
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@ref glfwGetX11Visual and @ref glfwGetXCBConnection.
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@subsubsection runtime_platform_34 Runtime platform selection
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GLFW now supports being compiled for multiple backends and selecting between
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@ -117,6 +117,7 @@ extern "C" {
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#if defined(GLFW_EXPOSE_NATIVE_X11) || defined(GLFW_EXPOSE_NATIVE_GLX)
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#include <X11/Xlib.h>
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#include <X11/extensions/Xrandr.h>
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typedef struct xcb_connection_t xcb_connection_t;
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#endif
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#if defined(GLFW_EXPOSE_NATIVE_WAYLAND)
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@ -416,6 +417,38 @@ GLFWAPI void glfwSetX11SelectionString(const char* string);
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* @ingroup native
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*/
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GLFWAPI const char* glfwGetX11SelectionString(void);
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/*! @brief Returns the default `VisualID` used by GLFW.
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*
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* @return The `VisualID` used by GLFW, or `NULL` if an
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* [error](@ref error_handling) occurred.
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*
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* @errors Possible errors include @ref GLFW_NOT_INITIALIZED.
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*
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* @thread_safety This function may be called from any thread. Access is not
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* synchronized.
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*
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* @since Added in version 3.4.
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*
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* @ingroup native
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*/
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GLFWAPI VisualID glfwGetX11Visual(void);
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/*! @brief Returns the XCB connection used by GLFW, if any.
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*
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* @return The XCB connection used by GLFW, or `NULL` if XCB is not used, or an
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* [error](@ref error_handling) occurred.
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*
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* @errors Possible errors include @ref GLFW_NOT_INITIALIZED.
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*
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* @thread_safety This function may be called from any thread. Access is not
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* synchronized.
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*
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* @since Added in version 3.4.
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*
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* @ingroup native
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*/
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GLFWAPI xcb_connection_t* glfwGetXCBConnection(void);
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#endif
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#if defined(GLFW_EXPOSE_NATIVE_GLX)
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@ -3351,5 +3351,44 @@ GLFWAPI const char* glfwGetX11SelectionString(void)
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return getSelectionString(_glfw.x11.PRIMARY);
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}
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GLFWAPI VisualID glfwGetX11Visual(void)
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{
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_GLFW_REQUIRE_INIT_OR_RETURN(0);
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if (_glfw.platform.platformID != GLFW_PLATFORM_X11)
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{
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_glfwInputError(GLFW_PLATFORM_UNAVAILABLE, "X11: Platform not initialized");
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return 0;
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}
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return XVisualIDFromVisual(DefaultVisual(_glfw.x11.display, _glfw.x11.screen));
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}
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GLFWAPI xcb_connection_t* glfwGetXCBConnection(void)
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{
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_GLFW_REQUIRE_INIT_OR_RETURN(NULL);
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if (_glfw.platform.platformID != GLFW_PLATFORM_X11)
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{
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_glfwInputError(GLFW_PLATFORM_UNAVAILABLE, "X11: Platform not initialized");
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return NULL;
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}
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if (!_glfw.x11.x11xcb.handle)
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{
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return NULL;
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}
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xcb_connection_t* connection = XGetXCBConnection(_glfw.x11.display);
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if (!connection)
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{
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_glfwInputError(GLFW_PLATFORM_ERROR,
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"X11: Failed to retrieve XCB connection");
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return NULL;
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}
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return connection;
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}
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#endif // _GLFW_X11
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