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Merge 9a2890d611 into f4fb25b63d

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This commit is contained in:
bailey cosier 2017-09-17 18:02:16 +00:00 committed by GitHub
commit 3b0ae359ba
16 changed files with 373 additions and 17 deletions
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2
.gitignore vendored
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@ -14,6 +14,8 @@ Release
MinSizeRel
RelWithDebInfo
*.xcodeproj
.vs
*.VC.opendb
# CMake files
Makefile

4
docs/window.dox
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@ -228,6 +228,10 @@ newly created full screen windows. Possible values are `GLFW_TRUE` and
@subsubsection window_hints_fb Framebuffer related hints
@anchor GLFW_TRANSPARENT_hint
__GLFW_TRANSPARENT__ specifies whether the framebuffer will support transparency
in the background. Possible values are `GLFW_TRUE` and `GLFW_FALSE`.
@anchor GLFW_RED_BITS
@anchor GLFW_GREEN_BITS
@anchor GLFW_BLUE_BITS

5
examples/gears.c
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@ -172,6 +172,7 @@ static GLfloat angle = 0.f;
/* OpenGL draw function & timing */
static void draw(void)
{
glClearColor(0., 0., 0., 0.);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glPushMatrix();
@ -297,7 +298,6 @@ static void init(void)
glEnable(GL_NORMALIZE);
}
/* program entry */
int main(int argc, char *argv[])
{
@ -311,6 +311,9 @@ int main(int argc, char *argv[])
}
glfwWindowHint(GLFW_DEPTH_BITS, 16);
glfwWindowHint(GLFW_ALPHA_BITS, 8);
glfwWindowHint(GLFW_TRANSPARENT, GLFW_TRUE);
glfwWindowHint(GLFW_DECORATED, GLFW_TRUE);
window = glfwCreateWindow( 300, 300, "Gears", NULL, NULL );
if (!window)

6
include/GLFW/glfw3.h
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@ -788,6 +788,7 @@ extern "C" {
*/
#define GLFW_CENTER_CURSOR 0x00020009
/*! @brief Framebuffer bit depth hint.
*
* Framebuffer bit depth [hint](@ref GLFW_RED_BITS).
@ -868,6 +869,11 @@ extern "C" {
* Framebuffer double buffering [hint](@ref GLFW_DOUBLEBUFFER).
*/
#define GLFW_DOUBLEBUFFER 0x00021010
/*! @brief Framebuffer transparency hint.
*
* Framebuffer transparency [hint](@ref GLFW_TRANSPARENT_hint).
*/
#define GLFW_TRANSPARENT 0x00021011
/*! @brief Context client API hint and attribute.
*
* Context client API [hint](@ref GLFW_CLIENT_API_hint) and

12
src/cocoa_window.m
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@ -413,7 +413,11 @@ static const NSRange kEmptyRange = { NSNotFound, 0 };
- (BOOL)isOpaque
{
return YES;
// Set to NO even if transparent is not used;
// The NSView/GLFWContentView does not need to be opaque anyway,
// and to avoid keeping track of alphaMask inside the NSView we
// just return NO here instead.
return NO;
}
- (BOOL)canBecomeKeyView
@ -1081,6 +1085,12 @@ static GLFWbool createNativeWindow(_GLFWwindow* window,
if (wndconfig->ns.retina)
[window->ns.view setWantsBestResolutionOpenGLSurface:YES];
if (_glfw.hints.framebuffer.transparent)
{
[window->ns.object setOpaque:NO];
[window->ns.object setBackgroundColor:[NSColor clearColor]];
}
[window->ns.object setContentView:window->ns.view];
[window->ns.object makeFirstResponder:window->ns.view];
[window->ns.object setTitle:[NSString stringWithUTF8String:wndconfig->title]];

39
src/egl_context.c
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@ -93,6 +93,14 @@ static GLFWbool chooseEGLConfig(const _GLFWctxconfig* ctxconfig,
_GLFWfbconfig* usableConfigs;
const _GLFWfbconfig* closest;
int i, nativeCount, usableCount;
GLFWbool findTransparent = desired->transparent;
#if defined(_GLFW_X11)
XVisualInfo visualTemplate = {0};
if ( !(_glfw.xrender.major || _glfw.xrender.minor) ) {
findTransparent = GLFW_FALSE;
}
#endif // _GLFW_X11
eglGetConfigs(_glfw.egl.display, NULL, 0, &nativeCount);
if (!nativeCount)
@ -107,6 +115,7 @@ static GLFWbool chooseEGLConfig(const _GLFWctxconfig* ctxconfig,
usableConfigs = calloc(nativeCount, sizeof(_GLFWfbconfig));
usableCount = 0;
selectionloop:
for (i = 0; i < nativeCount; i++)
{
const EGLConfig n = nativeConfigs[i];
@ -124,6 +133,28 @@ static GLFWbool chooseEGLConfig(const _GLFWctxconfig* ctxconfig,
// Only consider EGLConfigs with associated Visuals
if (!getEGLConfigAttrib(n, EGL_NATIVE_VISUAL_ID))
continue;
if( findTransparent ) {
int n_vi;
XVisualInfo *visualinfo;
XRenderPictFormat *pictFormat;
visualinfo = XGetVisualInfo(_glfw.x11.display, VisualIDMask, &visualTemplate, &n_vi);
if (!visualinfo)
continue;
pictFormat = XRenderFindVisualFormat(_glfw.x11.display, visualinfo->visual);
if( !pictFormat ) {
XFree( visualinfo );
continue;
}
if( !pictFormat->direct.alphaMask ) {
XFree( visualinfo );
continue;
}
XFree( visualinfo );
}
#endif // _GLFW_X11
if (ctxconfig->client == GLFW_OPENGL_ES_API)
@ -159,6 +190,12 @@ static GLFWbool chooseEGLConfig(const _GLFWctxconfig* ctxconfig,
u->handle = (uintptr_t) n;
usableCount++;
}
// reiterate the selection loop without looking for transparency supporting
// formats if no matchig FB configs for a transparent window were found.
if( findTransparent && !usableCount ) {
findTransparent = GLFW_FALSE;
goto selectionloop;
}
closest = _glfwChooseFBConfig(desired, usableConfigs, usableCount);
if (closest)
@ -699,6 +736,7 @@ GLFWbool _glfwChooseVisualEGL(const _GLFWctxconfig* ctxconfig,
EGLint visualID = 0, count = 0;
const long vimask = VisualScreenMask | VisualIDMask;
if (!chooseEGLConfig(ctxconfig, fbconfig, &native))
{
_glfwInputError(GLFW_FORMAT_UNAVAILABLE,
@ -766,4 +804,3 @@ GLFWAPI EGLSurface glfwGetEGLSurface(GLFWwindow* handle)
return window->context.egl.surface;
}

37
src/glx_context.c
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@ -55,6 +55,11 @@ static GLFWbool chooseGLXFBConfig(const _GLFWfbconfig* desired, GLXFBConfig* res
int i, nativeCount, usableCount;
const char* vendor;
GLFWbool trustWindowBit = GLFW_TRUE;
GLFWbool findTransparent = desired->transparent;
if ( !(_glfw.xrender.major || _glfw.xrender.minor) ) {
findTransparent = GLFW_FALSE;
}
// HACK: This is a (hopefully temporary) workaround for Chromium
// (VirtualBox GL) not setting the window bit on any GLXFBConfigs
@ -64,6 +69,7 @@ static GLFWbool chooseGLXFBConfig(const _GLFWfbconfig* desired, GLXFBConfig* res
nativeConfigs =
glXGetFBConfigs(_glfw.x11.display, _glfw.x11.screen, &nativeCount);
if (!nativeConfigs || !nativeCount)
{
_glfwInputError(GLFW_API_UNAVAILABLE, "GLX: No GLXFBConfigs returned");
@ -73,6 +79,7 @@ static GLFWbool chooseGLXFBConfig(const _GLFWfbconfig* desired, GLXFBConfig* res
usableConfigs = calloc(nativeCount, sizeof(_GLFWfbconfig));
usableCount = 0;
selectionloop:
for (i = 0; i < nativeCount; i++)
{
const GLXFBConfig n = nativeConfigs[i];
@ -89,6 +96,29 @@ static GLFWbool chooseGLXFBConfig(const _GLFWfbconfig* desired, GLXFBConfig* res
continue;
}
if( findTransparent ) {
XVisualInfo *visualinfo;
XRenderPictFormat *pictFormat;
visualinfo = glXGetVisualFromFBConfig(_glfw.x11.display, n);
if (!visualinfo) {
continue;
}
pictFormat = XRenderFindVisualFormat(_glfw.x11.display, visualinfo->visual);
if( !pictFormat ) {
XFree( visualinfo );
continue;
}
if( !pictFormat->direct.alphaMask ) {
XFree( visualinfo );
continue;
}
XFree( visualinfo );
}
u->redBits = getGLXFBConfigAttrib(n, GLX_RED_SIZE);
u->greenBits = getGLXFBConfigAttrib(n, GLX_GREEN_SIZE);
u->blueBits = getGLXFBConfigAttrib(n, GLX_BLUE_SIZE);
@ -118,6 +148,12 @@ static GLFWbool chooseGLXFBConfig(const _GLFWfbconfig* desired, GLXFBConfig* res
u->handle = (uintptr_t) n;
usableCount++;
}
// reiterate the selection loop without looking for transparency supporting
// formats if no matchig FB configs for a transparent window were found.
if( findTransparent && !usableCount ) {
findTransparent = GLFW_FALSE;
goto selectionloop;
}
closest = _glfwChooseFBConfig(desired, usableConfigs, usableCount);
if (closest)
@ -683,4 +719,3 @@ GLFWAPI GLXWindow glfwGetGLXWindow(GLFWwindow* handle)
return window->context.glx.window;
}

3
src/glx_context.h
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@ -72,6 +72,7 @@ typedef struct __GLXFBConfig* GLXFBConfig;
typedef struct __GLXcontext* GLXContext;
typedef void (*__GLXextproc)(void);
// libGL.so function pointer typedefs
typedef int (*PFNGLXGETFBCONFIGATTRIBPROC)(Display*,GLXFBConfig,int,int*);
typedef const char* (*PFNGLXGETCLIENTSTRINGPROC)(Display*,int);
typedef Bool (*PFNGLXQUERYEXTENSIONPROC)(Display*,int*,int*);
@ -92,7 +93,6 @@ typedef int (*PFNGLXSWAPINTERVALMESAPROC)(int);
typedef int (*PFNGLXSWAPINTERVALSGIPROC)(int);
typedef GLXContext (*PFNGLXCREATECONTEXTATTRIBSARBPROC)(Display*,GLXFBConfig,GLXContext,Bool,const int*);
// libGL.so function pointer typedefs
#define glXGetFBConfigs _glfw.glx.GetFBConfigs
#define glXGetFBConfigAttrib _glfw.glx.GetFBConfigAttrib
#define glXGetClientString _glfw.glx.GetClientString
@ -168,7 +168,6 @@ typedef struct _GLFWlibraryGLX
} _GLFWlibraryGLX;
GLFWbool _glfwInitGLX(void);
void _glfwTerminateGLX(void);
GLFWbool _glfwCreateContextGLX(_GLFWwindow* window,

3
src/internal.h
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@ -357,7 +357,8 @@ struct _GLFWfbconfig
int auxBuffers;
GLFWbool stereo;
int samples;
GLFWbool sRGB;
GLFWbool sRGB;
GLFWbool transparent;
GLFWbool doublebuffer;
uintptr_t handle;
};

6
src/nsgl_context.m
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@ -296,6 +296,12 @@ GLFWbool _glfwCreateContextNSGL(_GLFWwindow* window,
return GLFW_FALSE;
}
if (fbconfig->transparent)
{
GLint opaque = 0;
[window->context.nsgl.object setValues:&opaque forParameter:NSOpenGLCPSurfaceOpacity];
}
[window->context.nsgl.object setView:window->ns.view];
window->context.makeCurrent = makeContextCurrentNSGL;

142
src/wgl_context.c
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@ -56,7 +56,8 @@ static int getPixelFormatAttrib(_GLFWwindow* window, int pixelFormat, int attrib
//
static int choosePixelFormat(_GLFWwindow* window,
const _GLFWctxconfig* ctxconfig,
const _GLFWfbconfig* fbconfig)
const _GLFWfbconfig* fbconfig,
const GLFWbool transparent)
{
_GLFWfbconfig* usableConfigs;
const _GLFWfbconfig* closest;
@ -83,6 +84,20 @@ static int choosePixelFormat(_GLFWwindow* window,
{
const int n = i + 1;
_GLFWfbconfig* u = usableConfigs + usableCount;
PIXELFORMATDESCRIPTOR pfd;
if (fbconfig->transparent) {
if (!DescribePixelFormat(window->context.wgl.dc,
n,
sizeof(PIXELFORMATDESCRIPTOR),
&pfd))
{
continue;
}
if (!(pfd.dwFlags & PFD_SUPPORT_COMPOSITION))
continue;
}
if (_glfw.wgl.ARB_pixel_format)
{
@ -152,11 +167,9 @@ static int choosePixelFormat(_GLFWwindow* window,
}
else
{
PIXELFORMATDESCRIPTOR pfd;
// Get pixel format attributes through legacy PFDs
if (!DescribePixelFormat(window->context.wgl.dc,
if (!fbconfig->transparent && !DescribePixelFormat(window->context.wgl.dc,
n,
sizeof(PIXELFORMATDESCRIPTOR),
&pfd))
@ -201,8 +214,20 @@ static int choosePixelFormat(_GLFWwindow* window,
}
u->handle = n;
// always able to go transparent on win dwmapi
u->transparent = GLFW_TRUE;
usableCount++;
}
// Reiterate the selection loop without looking for transparency supporting
// formats if no matching pixelformat for a transparent window were found.
if (fbconfig->transparent && !usableCount) {
free(usableConfigs);
_glfwInputError(GLFW_PLATFORM_ERROR,
"WGL: No pixel format found for transparent window. Ignoring transparency.");
return choosePixelFormat(window, ctxconfig, fbconfig, GLFW_FALSE);
}
if (!usableCount)
{
@ -484,6 +509,101 @@ void _glfwTerminateWGL(void)
attribs[index++] = v; \
}
// Reliably check windows version as done in VersionHelpers.h
// needed for transparent window
static GLFWbool
isWindowsVersionOrGreater(WORD wMajorVersion, WORD wMinorVersion, WORD wServicePackMajor)
{
OSVERSIONINFOEXW osvi = { sizeof(osvi), 0, 0, 0, 0,{ 0 }, 0, 0 };
DWORDLONG const dwlConditionMask = VerSetConditionMask(
VerSetConditionMask(
VerSetConditionMask(
0, VER_MAJORVERSION, VER_GREATER_EQUAL),
VER_MINORVERSION, VER_GREATER_EQUAL),
VER_SERVICEPACKMAJOR, VER_GREATER_EQUAL);
osvi.dwMajorVersion = wMajorVersion;
osvi.dwMinorVersion = wMinorVersion;
osvi.wServicePackMajor = wServicePackMajor;
return VerifyVersionInfoW(&osvi, VER_MAJORVERSION | VER_MINORVERSION | VER_SERVICEPACKMAJOR, dwlConditionMask) != FALSE;
}
static GLFWbool isWindows8OrGreater()
{
GLFWbool isWin8OrGreater = isWindowsVersionOrGreater(HIBYTE(_WIN32_WINNT_WIN8), LOBYTE(_WIN32_WINNT_WIN8), 0) ? GLFW_TRUE: GLFW_FALSE;
return isWin8OrGreater;
}
static GLFWbool setupTransparentWindow(_GLFWwindow* window)
{
if (!DwmIsCompositionEnabled) {
_glfwInputError(GLFW_PLATFORM_ERROR,
"WGL: Composition needed for transparent window is disabled");
}
if (!DwmEnableBlurBehindWindow) {
_glfwInputError(GLFW_PLATFORM_ERROR,
"WGL: Unable to load DwmEnableBlurBehindWindow required for transparent window");
return GLFW_FALSE;
}
HRESULT hr = S_OK;
HWND handle = window->win32.handle;
DWM_BLURBEHIND bb = { 0 };
bb.dwFlags = DWM_BB_ENABLE | DWM_BB_BLURREGION;
bb.hRgnBlur = CreateRectRgn(0, 0, -1, -1); // makes the window transparent
bb.fEnable = TRUE;
hr = DwmEnableBlurBehindWindow(handle, &bb);
if (!SUCCEEDED(hr)) {
_glfwInputError(GLFW_PLATFORM_ERROR,
"WGL: Failed to enable blur behind window required for transparent window");
return GLFW_FALSE;
}
// Decorated windows on Windows 8+ don't repaint the transparent background
// leaving a trail behind animations.
// Hack: making the window layered with a transparency color key seems to fix this.
// Normally, when specifying a transparency color key to be used when composing
// the layered window, all pixels painted by the window in this color will be transparent.
// That doesn't seem to be the case anymore on Windows 8+, at least when used with
// DwmEnableBlurBehindWindow + negative region.
if (window->decorated && isWindows8OrGreater())
{
long style = GetWindowLongPtrW(handle, GWL_EXSTYLE);
if (!style) {
_glfwInputError(GLFW_PLATFORM_ERROR,
"WGL: Failed to retrieve extended styles. GetLastError: %d",
GetLastError());
return GLFW_FALSE;
}
style |= WS_EX_LAYERED;
if (!SetWindowLongPtrW(handle, GWL_EXSTYLE, style))
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"WGL: Failed to add layered style. GetLastError: %d",
GetLastError());
return GLFW_FALSE;
}
if (!SetLayeredWindowAttributes(handle,
// Using a color key not equal to black to fix the trailing issue.
// When set to black, something is making the hit test not resize with the
// window frame.
RGB(0, 193, 48),
255,
LWA_COLORKEY))
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"WGL: Failed to set layered window. GetLastError: %d",
GetLastError());
return GLFW_FALSE;
}
}
return GLFW_TRUE;
}
// Create the OpenGL or OpenGL ES context
//
GLFWbool _glfwCreateContextWGL(_GLFWwindow* window,
@ -509,7 +629,7 @@ GLFWbool _glfwCreateContextWGL(_GLFWwindow* window,
return GLFW_FALSE;
}
pixelFormat = choosePixelFormat(window, ctxconfig, fbconfig);
pixelFormat = choosePixelFormat(window, ctxconfig, fbconfig, fbconfig->transparent);
if (!pixelFormat)
return GLFW_FALSE;
@ -664,8 +784,9 @@ GLFWbool _glfwCreateContextWGL(_GLFWwindow* window,
ctxconfig->major,
ctxconfig->minor);
}
}
else if (error == (0xc0070000 | ERROR_INVALID_PROFILE_ARB))
}
else if (error == (0xc0070000 | ERROR_INVALID_PROFILE_ARB))
{
_glfwInputError(GLFW_VERSION_UNAVAILABLE,
"WGL: Driver does not support the requested OpenGL profile");
@ -713,6 +834,13 @@ GLFWbool _glfwCreateContextWGL(_GLFWwindow* window,
}
}
if (fbconfig->transparent)
{
if (!setupTransparentWindow(window))
_glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
"WGL: Failed to setup window as transparent as requested");
}
window->context.makeCurrent = makeContextCurrentWGL;
window->context.swapBuffers = swapBuffersWGL;
window->context.swapInterval = swapIntervalWGL;

2
src/win32_init.c
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@ -131,6 +131,8 @@ static GLFWbool loadLibraries(void)
GetProcAddress(_glfw.win32.dwmapi.instance, "DwmIsCompositionEnabled");
_glfw.win32.dwmapi.Flush = (PFN_DwmFlush)
GetProcAddress(_glfw.win32.dwmapi.instance, "DwmFlush");
_glfw.win32.dwmapi.EnableBlurBehindWindow = (PFN_DwmEnableBlurBehindWindow)
GetProcAddress(_glfw.win32.dwmapi.instance, "DwmEnableBlurBehindWindow");
}
_glfw.win32.shcore.instance = LoadLibraryA("shcore.dll");

22
src/win32_platform.h
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@ -153,7 +153,22 @@ typedef enum PROCESS_DPI_AWARENESS
// HACK: Define macros that some dinput.h variants don't
#ifndef DIDFT_OPTIONAL
#define DIDFT_OPTIONAL 0x80000000
#define DIDFT_OPTIONAL 0x80000000
#endif
#if !defined(_DWMAPI_H_)
// Blur behind data structures
#define DWM_BB_ENABLE 0x00000001 // fEnable has been specified
#define DWM_BB_BLURREGION 0x00000002 // hRgnBlur has been specified
#define DWM_BB_TRANSITIONONMAXIMIZED 0x00000004 // fTransitionOnMaximized has been specified
typedef struct _DWM_BLURBEHIND
{
DWORD dwFlags;
BOOL fEnable;
HRGN hRgnBlur;
BOOL fTransitionOnMaximized;
} DWM_BLURBEHIND, *PDWM_BLURBEHIND;
#endif
// winmm.dll function pointer typedefs
@ -179,9 +194,13 @@ typedef BOOL (WINAPI * PFN_ChangeWindowMessageFilterEx)(HWND,UINT,DWORD,PCHANGEF
// dwmapi.dll function pointer typedefs
typedef HRESULT (WINAPI * PFN_DwmIsCompositionEnabled)(BOOL*);
typedef HRESULT (WINAPI * PFN_DwmFlush)(VOID);
#define DwmIsCompositionEnabled _glfw.win32.dwmapi.IsCompositionEnabled
#define DwmFlush _glfw.win32.dwmapi.Flush
typedef HRESULT(WINAPI * PFN_DwmEnableBlurBehindWindow)(HWND, const DWM_BLURBEHIND*);
#define DwmEnableBlurBehindWindow _glfw.win32.dwmapi.EnableBlurBehindWindow
// shcore.dll function pointer typedefs
typedef HRESULT (WINAPI * PFN_SetProcessDpiAwareness)(PROCESS_DPI_AWARENESS);
#define _glfw_SetProcessDpiAwareness _glfw.win32.shcore.SetProcessDpiAwareness
@ -286,6 +305,7 @@ typedef struct _GLFWlibraryWin32
HINSTANCE instance;
PFN_DwmIsCompositionEnabled IsCompositionEnabled;
PFN_DwmFlush Flush;
PFN_DwmEnableBlurBehindWindow EnableBlurBehindWindow;
} dwmapi;
struct {

5
src/window.c
View File

@ -147,6 +147,7 @@ GLFWAPI GLFWwindow* glfwCreateWindow(int width, int height,
fbconfig = _glfw.hints.framebuffer;
ctxconfig = _glfw.hints.context;
wndconfig = _glfw.hints.window;
fbconfig.transparent = _glfw.hints.framebuffer.transparent ? GLFW_TRUE : GLFW_FALSE;
wndconfig.width = width;
wndconfig.height = height;
@ -262,6 +263,7 @@ void glfwDefaultWindowHints(void)
_glfw.hints.framebuffer.depthBits = 24;
_glfw.hints.framebuffer.stencilBits = 8;
_glfw.hints.framebuffer.doublebuffer = GLFW_TRUE;
_glfw.hints.framebuffer.transparent = GLFW_FALSE;
// The default is to select the highest available refresh rate
_glfw.hints.refreshRate = GLFW_DONT_CARE;
@ -315,6 +317,9 @@ GLFWAPI void glfwWindowHint(int hint, int value)
case GLFW_DOUBLEBUFFER:
_glfw.hints.framebuffer.doublebuffer = value ? GLFW_TRUE : GLFW_FALSE;
return;
case GLFW_TRANSPARENT:
_glfw.hints.framebuffer.transparent = value;
return;
case GLFW_SAMPLES:
_glfw.hints.framebuffer.samples = value;
return;

74
src/x11_init.c
View File

@ -480,6 +480,7 @@ static GLFWbool initExtensions(void)
}
_glfw.x11.xi.handle = dlopen("libXi.so.6", RTLD_LAZY | RTLD_GLOBAL);
if (_glfw.x11.xi.handle)
{
_glfw.x11.xi.QueryVersion = (PFN_XIQueryVersion)
@ -505,7 +506,9 @@ static GLFWbool initExtensions(void)
}
}
// Check for RandR extension
_glfw.x11.randr.handle = dlopen("libXrandr.so.2", RTLD_LAZY | RTLD_GLOBAL);
if (_glfw.x11.randr.handle)
{
_glfw.x11.randr.AllocGamma = (PFN_XRRAllocGamma)
@ -717,6 +720,76 @@ static GLFWbool initExtensions(void)
_glfw.x11.MOTIF_WM_HINTS =
XInternAtom(_glfw.x11.display, "_MOTIF_WM_HINTS", False);
const char* sonames_xrender[] =
{
#if defined(__CYGWIN__)
"libXrender-1.so",
#else
"libXrender.so.1",
"libXrender.so",
#endif
NULL
};
// Find or create window manager atoms
_glfw.x11.WM_PROTOCOLS = XInternAtom(_glfw.x11.display,
"WM_PROTOCOLS",
False);
_glfw.x11.WM_STATE = XInternAtom(_glfw.x11.display, "WM_STATE", False);
_glfw.x11.WM_DELETE_WINDOW = XInternAtom(_glfw.x11.display,
"WM_DELETE_WINDOW",
False);
_glfw.x11.MOTIF_WM_HINTS = XInternAtom(_glfw.x11.display,
"_MOTIF_WM_HINTS",
False);
#if defined(_GLFW_HAS_XF86VM)
// Check for XF86VidMode extension
_glfw.x11.vidmode.available =
XF86VidModeQueryExtension(_glfw.x11.display,
&_glfw.x11.vidmode.eventBase,
&_glfw.x11.vidmode.errorBase);
#endif /*_GLFW_HAS_XF86VM*/
// Xrender support is optional and not a requirement for GLX/EGL
// to work. Xrender is required for selecting a FB config that
// supports a picture format with an alpha mask, which in turn
// is required for transparent windows. I Xrender is not supported
// the GLFW_TRANSPARENT window hint is ignored.
int i;
for (i = 0; sonames_xrender[i]; i++)
{
_glfw.xrender.handle = dlopen(sonames_xrender[i], RTLD_LAZY | RTLD_GLOBAL);
if (_glfw.xrender.handle)
break;
}
_glfw.xrender.errorBase = 0;
_glfw.xrender.eventBase = 0;
_glfw.xrender.major = 0;
_glfw.xrender.minor = 0;
if (_glfw.xrender.handle) do {
int errorBase, eventBase, major, minor;
_glfw.xrender.QueryExtension =
dlsym(_glfw.xrender.handle, "XRenderQueryExtension");
_glfw.xrender.QueryVersion =
dlsym(_glfw.xrender.handle, "XRenderQueryVersion");
_glfw.xrender.FindVisualFormat =
dlsym(_glfw.xrender.handle, "XRenderFindVisualFormat");
if ( !XRenderQueryExtension(_glfw.x11.display, &errorBase, &eventBase)) {
break;
}
if ( !XRenderQueryVersion(_glfw.x11.display, &major, &minor)) {
break;
}
_glfw.xrender.errorBase = errorBase;
_glfw.xrender.eventBase = eventBase;
_glfw.xrender.major = major;
_glfw.xrender.minor = minor;
} while(0);
return GLFW_TRUE;
}
@ -979,4 +1052,3 @@ const char* _glfwPlatformGetVersionString(void)
#endif
;
}

28
src/x11_platform.h
View File

@ -162,10 +162,20 @@ typedef VkBool32 (APIENTRY *PFN_vkGetPhysicalDeviceXcbPresentationSupportKHR)(Vk
#define _GLFW_EGL_NATIVE_DISPLAY ((EGLNativeDisplayType) _glfw.x11.display)
#define _GLFW_PLATFORM_WINDOW_STATE _GLFWwindowX11 x11
#define _GLFW_PLATFORM_LIBRARY_WINDOW_STATE _GLFWlibraryX11 x11
#define _GLFW_PLATFORM_LIBRARY_WINDOW_STATE _GLFWlibraryX11 x11 ; _GLFWlibraryXrender xrender
#define _GLFW_PLATFORM_MONITOR_STATE _GLFWmonitorX11 x11
#define _GLFW_PLATFORM_CURSOR_STATE _GLFWcursorX11 x11
// libXrender.so function pointer typedefs
typedef Bool (*PFNXRENDERQUERYEXTENSIONPROC)(Display*,int*,int*);
typedef Status (*PFNXRENDERQUERYVERSIONPROC)(Display*dpy,int*,int*);
typedef XRenderPictFormat* (*PFNXRENDERFINDVISUALFORMATPROC)(Display*,Visual const *);
// libXrender.so function identifier overlays
#define XRenderQueryExtension _glfw.xrender.QueryExtension
#define XRenderQueryVersion _glfw.xrender.QueryVersion
#define XRenderFindVisualFormat _glfw.xrender.FindVisualFormat
// X11-specific per-window data
//
@ -375,6 +385,22 @@ typedef struct _GLFWlibraryX11
} _GLFWlibraryX11;
// Xrender-specific global data
typedef struct _GLFWlibraryXrender
{
int major, minor;
int eventBase;
int errorBase;
// dlopen handle for libGL.so.1
void* handle;
// Xrender functions (subset required for transparent window)
PFNXRENDERQUERYEXTENSIONPROC QueryExtension;
PFNXRENDERQUERYVERSIONPROC QueryVersion;
PFNXRENDERFINDVISUALFORMATPROC FindVisualFormat;
} _GLFWlibraryXrender;
// X11-specific per-monitor data
//
typedef struct _GLFWmonitorX11