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Add runtime platform selection

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This adds compile-time support for multiple platforms and runtime
detection of them.  Window system related platform functions are now
called from shared code via the function pointer struct _GLFWplatform.

The timer, thread and module loading platform functions are still called
directly by name and the implementation chosen at link-time.  These
functions are the same for any backend on a given OS, including the Null
backend.

The platforms are now enabled via CMake dependent options following the
GLFW_BUILD_<platform> pattern instead of a mix of automagic and ad-hoc
option names.  There is no longer any option for the Null backend as it
is now always enabled.

Much of the struct stitching work in platform.h was based on an earlier
experimental branch for runtime platform selection by @ronchaine.

Every platform function related to windows, contexts, monitors, input,
event processing and Vulkan have been renamed so that multiple sets of
them can exist without colliding.  Calls to these are now routed through
the _glfw.platform struct member.  These changes makes up most of this
commit.

For Wayland and X11 the client library loading and display creation is
used to detect a running compositor/server.  The XDG_SESSION_TYPE
environment variable is ignored for now, as X11 is still by far the more
complete implementation.

Closes #1655
Closes #1958
This commit is contained in:
Camilla Löwy
2021-07-13 21:50:09 +02:00
parent ff9d9515f6
commit 56a4cb0a3a
56 changed files with 2698 additions and 1235 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/input.c
+34 -34
View File
@@ -50,9 +50,9 @@ static GLFWbool initJoysticks(void)
{
if (!_glfw.joysticksInitialized)
{
if (!_glfwPlatformInitJoysticks())
if (!_glfw.platform.initJoysticks())
{
_glfwPlatformTerminateJoysticks();
_glfw.platform.terminateJoysticks();
return GLFW_FALSE;
}
}
@@ -234,7 +234,7 @@ static GLFWbool parseMapping(_GLFWmapping* mapping, const char* string)
}
else
{
const char* name = _glfwPlatformGetMappingName();
const char* name = _glfw.platform.getMappingName();
length = strlen(name);
if (strncmp(c, name, length) != 0)
return GLFW_FALSE;
@@ -253,7 +253,7 @@ static GLFWbool parseMapping(_GLFWmapping* mapping, const char* string)
mapping->guid[i] += 'a' - 'A';
}
_glfwPlatformUpdateGamepadGUID(mapping->guid);
_glfw.platform.updateGamepadGUID(mapping->guid);
return GLFW_TRUE;
}
@@ -481,8 +481,8 @@ void _glfwCenterCursorInContentArea(_GLFWwindow* window)
{
int width, height;
_glfwPlatformGetWindowSize(window, &width, &height);
_glfwPlatformSetCursorPos(window, width / 2.0, height / 2.0);
_glfw.platform.getWindowSize(window, &width, &height);
_glfw.platform.setCursorPos(window, width / 2.0, height / 2.0);
}
@@ -539,10 +539,10 @@ GLFWAPI void glfwSetInputMode(GLFWwindow* handle, int mode, int value)
window->cursorMode = value;
_glfwPlatformGetCursorPos(window,
&window->virtualCursorPosX,
&window->virtualCursorPosY);
_glfwPlatformSetCursorMode(window, value);
_glfw.platform.getCursorPos(window,
&window->virtualCursorPosX,
&window->virtualCursorPosY);
_glfw.platform.setCursorMode(window, value);
}
else if (mode == GLFW_STICKY_KEYS)
{
@@ -590,7 +590,7 @@ GLFWAPI void glfwSetInputMode(GLFWwindow* handle, int mode, int value)
}
else if (mode == GLFW_RAW_MOUSE_MOTION)
{
if (!_glfwPlatformRawMouseMotionSupported())
if (!_glfw.platform.rawMouseMotionSupported())
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"Raw mouse motion is not supported on this system");
@@ -602,7 +602,7 @@ GLFWAPI void glfwSetInputMode(GLFWwindow* handle, int mode, int value)
return;
window->rawMouseMotion = value;
_glfwPlatformSetRawMouseMotion(window, value);
_glfw.platform.setRawMouseMotion(window, value);
}
else
_glfwInputError(GLFW_INVALID_ENUM, "Invalid input mode 0x%08X", mode);
@@ -611,7 +611,7 @@ GLFWAPI void glfwSetInputMode(GLFWwindow* handle, int mode, int value)
GLFWAPI int glfwRawMouseMotionSupported(void)
{
_GLFW_REQUIRE_INIT_OR_RETURN(GLFW_FALSE);
return _glfwPlatformRawMouseMotionSupported();
return _glfw.platform.rawMouseMotionSupported();
}
GLFWAPI const char* glfwGetKeyName(int key, int scancode)
@@ -627,10 +627,10 @@ GLFWAPI const char* glfwGetKeyName(int key, int scancode)
return NULL;
}
scancode = _glfwPlatformGetKeyScancode(key);
scancode = _glfw.platform.getKeyScancode(key);
}
return _glfwPlatformGetScancodeName(scancode);
return _glfw.platform.getScancodeName(scancode);
}
GLFWAPI int glfwGetKeyScancode(int key)
@@ -643,7 +643,7 @@ GLFWAPI int glfwGetKeyScancode(int key)
return GLFW_RELEASE;
}
return _glfwPlatformGetKeyScancode(key);
return _glfw.platform.getKeyScancode(key);
}
GLFWAPI int glfwGetKey(GLFWwindow* handle, int key)
@@ -712,7 +712,7 @@ GLFWAPI void glfwGetCursorPos(GLFWwindow* handle, double* xpos, double* ypos)
*ypos = window->virtualCursorPosY;
}
else
_glfwPlatformGetCursorPos(window, xpos, ypos);
_glfw.platform.getCursorPos(window, xpos, ypos);
}
GLFWAPI void glfwSetCursorPos(GLFWwindow* handle, double xpos, double ypos)
@@ -731,7 +731,7 @@ GLFWAPI void glfwSetCursorPos(GLFWwindow* handle, double xpos, double ypos)
return;
}
if (!_glfwPlatformWindowFocused(window))
if (!_glfw.platform.windowFocused(window))
return;
if (window->cursorMode == GLFW_CURSOR_DISABLED)
@@ -743,7 +743,7 @@ GLFWAPI void glfwSetCursorPos(GLFWwindow* handle, double xpos, double ypos)
else
{
// Update system cursor position
_glfwPlatformSetCursorPos(window, xpos, ypos);
_glfw.platform.setCursorPos(window, xpos, ypos);
}
}
@@ -759,7 +759,7 @@ GLFWAPI GLFWcursor* glfwCreateCursor(const GLFWimage* image, int xhot, int yhot)
cursor->next = _glfw.cursorListHead;
_glfw.cursorListHead = cursor;
if (!_glfwPlatformCreateCursor(cursor, image, xhot, yhot))
if (!_glfw.platform.createCursor(cursor, image, xhot, yhot))
{
glfwDestroyCursor((GLFWcursor*) cursor);
return NULL;
@@ -793,7 +793,7 @@ GLFWAPI GLFWcursor* glfwCreateStandardCursor(int shape)
cursor->next = _glfw.cursorListHead;
_glfw.cursorListHead = cursor;
if (!_glfwPlatformCreateStandardCursor(cursor, shape))
if (!_glfw.platform.createStandardCursor(cursor, shape))
{
glfwDestroyCursor((GLFWcursor*) cursor);
return NULL;
@@ -822,7 +822,7 @@ GLFWAPI void glfwDestroyCursor(GLFWcursor* handle)
}
}
_glfwPlatformDestroyCursor(cursor);
_glfw.platform.destroyCursor(cursor);
// Unlink cursor from global linked list
{
@@ -847,7 +847,7 @@ GLFWAPI void glfwSetCursor(GLFWwindow* windowHandle, GLFWcursor* cursorHandle)
window->cursor = cursor;
_glfwPlatformSetCursor(window, cursor);
_glfw.platform.setCursor(window, cursor);
}
GLFWAPI GLFWkeyfun glfwSetKeyCallback(GLFWwindow* handle, GLFWkeyfun cbfun)
@@ -956,7 +956,7 @@ GLFWAPI int glfwJoystickPresent(int jid)
if (!js->present)
return GLFW_FALSE;
return _glfwPlatformPollJoystick(js, _GLFW_POLL_PRESENCE);
return _glfw.platform.pollJoystick(js, _GLFW_POLL_PRESENCE);
}
GLFWAPI const float* glfwGetJoystickAxes(int jid, int* count)
@@ -984,7 +984,7 @@ GLFWAPI const float* glfwGetJoystickAxes(int jid, int* count)
if (!js->present)
return NULL;
if (!_glfwPlatformPollJoystick(js, _GLFW_POLL_AXES))
if (!_glfw.platform.pollJoystick(js, _GLFW_POLL_AXES))
return NULL;
*count = js->axisCount;
@@ -1016,7 +1016,7 @@ GLFWAPI const unsigned char* glfwGetJoystickButtons(int jid, int* count)
if (!js->present)
return NULL;
if (!_glfwPlatformPollJoystick(js, _GLFW_POLL_BUTTONS))
if (!_glfw.platform.pollJoystick(js, _GLFW_POLL_BUTTONS))
return NULL;
if (_glfw.hints.init.hatButtons)
@@ -1052,7 +1052,7 @@ GLFWAPI const unsigned char* glfwGetJoystickHats(int jid, int* count)
if (!js->present)
return NULL;
if (!_glfwPlatformPollJoystick(js, _GLFW_POLL_BUTTONS))
if (!_glfw.platform.pollJoystick(js, _GLFW_POLL_BUTTONS))
return NULL;
*count = js->hatCount;
@@ -1081,7 +1081,7 @@ GLFWAPI const char* glfwGetJoystickName(int jid)
if (!js->present)
return NULL;
if (!_glfwPlatformPollJoystick(js, _GLFW_POLL_PRESENCE))
if (!_glfw.platform.pollJoystick(js, _GLFW_POLL_PRESENCE))
return NULL;
return js->name;
@@ -1109,7 +1109,7 @@ GLFWAPI const char* glfwGetJoystickGUID(int jid)
if (!js->present)
return NULL;
if (!_glfwPlatformPollJoystick(js, _GLFW_POLL_PRESENCE))
if (!_glfw.platform.pollJoystick(js, _GLFW_POLL_PRESENCE))
return NULL;
return js->guid;
@@ -1240,7 +1240,7 @@ GLFWAPI int glfwJoystickIsGamepad(int jid)
if (!js->present)
return GLFW_FALSE;
if (!_glfwPlatformPollJoystick(js, _GLFW_POLL_PRESENCE))
if (!_glfw.platform.pollJoystick(js, _GLFW_POLL_PRESENCE))
return GLFW_FALSE;
return js->mapping != NULL;
@@ -1268,7 +1268,7 @@ GLFWAPI const char* glfwGetGamepadName(int jid)
if (!js->present)
return NULL;
if (!_glfwPlatformPollJoystick(js, _GLFW_POLL_PRESENCE))
if (!_glfw.platform.pollJoystick(js, _GLFW_POLL_PRESENCE))
return NULL;
if (!js->mapping)
@@ -1303,7 +1303,7 @@ GLFWAPI int glfwGetGamepadState(int jid, GLFWgamepadstate* state)
if (!js->present)
return GLFW_FALSE;
if (!_glfwPlatformPollJoystick(js, _GLFW_POLL_ALL))
if (!_glfw.platform.pollJoystick(js, _GLFW_POLL_ALL))
return GLFW_FALSE;
if (!js->mapping)
@@ -1368,13 +1368,13 @@ GLFWAPI void glfwSetClipboardString(GLFWwindow* handle, const char* string)
assert(string != NULL);
_GLFW_REQUIRE_INIT();
_glfwPlatformSetClipboardString(string);
_glfw.platform.setClipboardString(string);
}
GLFWAPI const char* glfwGetClipboardString(GLFWwindow* handle)
{
_GLFW_REQUIRE_INIT_OR_RETURN(NULL);
return _glfwPlatformGetClipboardString();
return _glfw.platform.getClipboardString();
}
GLFWAPI double glfwGetTime(void)