+/**
+ * Functions for choosing and opening/loading device drivers.
+ */
+
+
#include <assert.h>
-#include <dlfcn.h>
-#include <stdio.h>
#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
#include "eglconfig.h"
#include "eglcontext.h"
+#include "egldefines.h"
#include "egldisplay.h"
#include "egldriver.h"
#include "eglglobals.h"
+#include "egllog.h"
+#include "eglmisc.h"
#include "eglmode.h"
#include "eglscreen.h"
+#include "eglstring.h"
#include "eglsurface.h"
+#if defined(_EGL_PLATFORM_X)
+#include <dlfcn.h>
+#include "eglx.h"
+#elif defined(_EGL_PLATFORM_WINDOWS)
+/* Use static linking on Windows for now */
+#define WINDOWS_STATIC_LINK
+#endif
+
+/**
+ * Wrappers for dlopen/dlclose()
+ */
+#if defined(_EGL_PLATFORM_WINDOWS)
+#ifdef WINDOWS_STATIC_LINK
+ static const char *DefaultDriverName = "Windows EGL Static Library";
+#else
+ /* XXX Need to decide how to do dynamic name lookup on Windows */
+ static const char *DefaultDriverName = "TBD";
+#endif
+ static const char *SysFS = NULL;
+ typedef HMODULE lib_handle;
+
+ static HMODULE
+ open_library(const char *filename)
+ {
+#ifdef WINDOWS_STATIC_LINK
+ return 0;
+#else
+ return LoadLibrary(filename);
+#endif
+ }
+
+ static void
+ close_library(HMODULE lib)
+ {
+#ifdef WINDOWS_STATIC_LINK
+#else
+ FreeLibrary(lib);
+#endif
+ }
+
+#elif defined(_EGL_PLATFORM_X)
+ static const char *DefaultDriverName = ":0";
+ static const char *SysFS = "/sys/class";
+
+ typedef void * lib_handle;
+
+ static void *
+ open_library(const char *filename)
+ {
+ return dlopen(filename, RTLD_LAZY);
+ }
+
+ static void
+ close_library(void *lib)
+ {
+ dlclose(lib);
+ }
+
+#endif
+
+/**
+ * Given a card number, use sysfs to determine the DRI driver name.
+ */
+const char *
+_eglChooseDRMDriver(int card)
+{
+#if 0
+ return _eglstrdup("libEGLdri");
+#else
+ char path[2000], driverName[2000];
+ FILE *f;
+ int length;
-const char *DefaultDriverName = "demodriver";
+ snprintf(path, sizeof(path), "%s/drm/card%d/dri_library_name", SysFS, card);
+
+ f = fopen(path, "r");
+ if (!f)
+ return NULL;
+
+ fgets(driverName, sizeof(driverName), f);
+ fclose(f);
+
+ if ((length = strlen(driverName)) > 1) {
+ /* remove the trailing newline from sysfs */
+ driverName[length - 1] = '\0';
+ strncat(driverName, "_dri", sizeof(driverName));
+ return _eglstrdup(driverName);
+ }
+ else {
+ return NULL;
+ }
+#endif
+}
/**
- * Choose and open/init the hardware driver for the given EGLDisplay.
- * Previously, the EGLDisplay was created with _eglNewDisplay() where
- * we recorded the user's NativeDisplayType parameter.
+ * XXX this function is totally subject change!!!
*
- * Now we'll use the NativeDisplayType value.
*
- * Currently, the native display value is treated as a string.
+ * Determine/return the path of the driver to use for the given native display.
+ *
+ * Try to be clever and determine if nativeDisplay is an Xlib Display
+ * ptr or a string (naming a driver or screen number, etc).
+ *
* If the first character is ':' we interpret it as a screen or card index
* number (i.e. ":0" or ":1", etc)
* Else if the first character is '!' we interpret it as specific driver name
* (i.e. "!r200" or "!i830".
+ *
+ * Whatever follows ':' is interpreted as arguments.
+ *
+ * The caller may free() the returned strings.
*/
-_EGLDriver *
-_eglChooseDriver(EGLDisplay display)
+static char *
+_eglChooseDriver(_EGLDisplay *dpy, char **argsRet)
{
- _EGLDisplay *dpy = _eglLookupDisplay(display);
- _EGLDriver *drv;
- const char *driverName = DefaultDriverName;
- const char *name;
-
- assert(dpy);
-
- name = dpy->Name;
- if (!name) {
- /* use default */
- }
- else if (name[0] == ':' && (name[1] >= '0' && name[1] <= '9') && !name[2]) {
- printf("EGL: Use driver for screen: %s\n", name);
- /* XXX probe hardware here to determine which driver to open */
- driverName = "libEGLdri";
- }
- else if (name[0] == '!') {
- /* use specified driver name */
- driverName = name + 1;
- printf("EGL: Use driver named %s\n", driverName);
- }
- else {
- /* Maybe display was returned by XOpenDisplay? */
- printf("EGL: can't parse display pointer\n");
+ char *path = NULL;
+ const char *args = NULL;
+
+ path = getenv("EGL_DRIVER");
+ if (path)
+ path = _eglstrdup(path);
+
+#if defined(_EGL_PLATFORM_X)
+ (void) DefaultDriverName;
+
+ if (!path && dpy->NativeDisplay) {
+ const char *dpyString = (const char *) dpy->NativeDisplay;
+ char *p;
+ /* parse the display string */
+ if (dpyString[0] == '!' || dpyString[0] == ':') {
+ if (dpyString[0] == '!') {
+ path = _eglstrdup(dpyString);
+ p = strchr(path, ':');
+ if (p)
+ *p++ = '\0';
+ } else {
+ p = strchr(dpyString, ':');
+ if (p)
+ p++;
+ }
+
+ if (p) {
+ if (!path && p[0] >= '0' && p[0] <= '9' && !p[1]) {
+ int card = atoi(p);
+ path = (char *) _eglChooseDRMDriver(card);
+ }
+ args = p;
+ }
+ }
+ else {
+ path = (char *) _xeglChooseDriver(dpy);
+ }
}
+#elif defined(_EGL_PLATFORM_WINDOWS)
+ if (!path)
+ path = _eglstrdup(DefaultDriverName);
+#endif /* _EGL_PLATFORM_X */
- drv = _eglOpenDriver(dpy, driverName);
- dpy->Driver = drv;
+ if (path && argsRet)
+ *argsRet = (args) ? _eglstrdup(args) : NULL;
- return drv;
+ return path;
}
/**
- * Open/load the named driver and call its bootstrap function: _eglMain().
- * \return new _EGLDriver object.
+ * Open the named driver and find its bootstrap function: _eglMain().
*/
-_EGLDriver *
-_eglOpenDriver(_EGLDisplay *dpy, const char *driverName)
+static _EGLMain_t
+_eglOpenLibrary(const char *driverName, lib_handle *handle)
{
- _EGLDriver *drv;
_EGLMain_t mainFunc;
- void *lib;
+ lib_handle lib;
char driverFilename[1000];
+ assert(driverName);
+
+#if defined(_EGL_PLATFORM_WINDOWS)
+/* Use static linking on Windows for now */
+#ifdef WINDOWS_STATIC_LINK
+ lib = 0;
+ mainFunc = (_EGLMain_t)_eglMain;
+#else
+ /* XXX untested */
+ sprintf(driverFilename, "%s.dll", driverName);
+ _eglLog(_EGL_DEBUG, "dlopen(%s)", driverFilename);
+ lib = open_library(driverFilename);
+ if (!lib) {
+ _eglLog(_EGL_WARNING, "Could not open %s",
+ driverFilename);
+ return NULL;
+ }
+ mainFunc = (_EGLMain_t) GetProcAddress(lib, "_eglMain");
+#endif
+#elif defined(_EGL_PLATFORM_X)
/* XXX also prepend a directory path??? */
sprintf(driverFilename, "%s.so", driverName);
-
- lib = dlopen(driverFilename, RTLD_NOW);
+ _eglLog(_EGL_DEBUG, "dlopen(%s)", driverFilename);
+ lib = open_library(driverFilename);
if (!lib) {
- fprintf(stderr, "EGLdebug: Error opening %s: %s\n", driverFilename, dlerror());
+ _eglLog(_EGL_WARNING, "Could not open %s (%s)",
+ driverFilename, dlerror());
return NULL;
}
-
mainFunc = (_EGLMain_t) dlsym(lib, "_eglMain");
+#endif
+
if (!mainFunc) {
- fprintf(stderr, "_eglMain not found in %s", (char *) driverFilename);
- dlclose(lib);
+ _eglLog(_EGL_WARNING, "_eglMain not found in %s", driverFilename);
+ if (lib)
+ close_library(lib);
return NULL;
}
- drv = mainFunc(dpy);
+ *handle = lib;
+ return mainFunc;
+}
+
+
+/**
+ * Load the named driver. The path and args passed will be
+ * owned by the driver and freed.
+ */
+static _EGLDriver *
+_eglLoadDriver(_EGLDisplay *dpy, char *path, char *args)
+{
+ _EGLMain_t mainFunc;
+ lib_handle lib;
+ _EGLDriver *drv = NULL;
+
+ mainFunc = _eglOpenLibrary(path, &lib);
+ if (!mainFunc)
+ return NULL;
+
+ drv = mainFunc(dpy, args);
if (!drv) {
- dlclose(lib);
+ if (lib)
+ close_library(lib);
return NULL;
}
- /* with a recurvise open you want the inner most handle */
- if (!drv->LibHandle)
- drv->LibHandle = lib;
- else
- dlclose(lib);
- drv->Display = dpy;
+ if (!drv->Name) {
+ _eglLog(_EGL_WARNING, "Driver loaded from %s has no name", path);
+ drv->Name = "UNNAMED";
+ }
+
+ drv->Path = path;
+ drv->Args = args;
+ drv->LibHandle = lib;
+
+ return drv;
+}
+
+
+/**
+ * Match a display to a preloaded driver.
+ */
+static _EGLDriver *
+_eglMatchDriver(_EGLDisplay *dpy)
+{
+ _EGLDriver *defaultDriver = NULL;
+ EGLint i;
+
+ for (i = 0; i < _eglGlobal.NumDrivers; i++) {
+ _EGLDriver *drv = _eglGlobal.Drivers[i];
+
+ /* display specifies a driver */
+ if (dpy->DriverName) {
+ if (strcmp(dpy->DriverName, drv->Name) == 0)
+ return drv;
+ }
+ else if (drv->Probe) {
+ if (drv->Probe(drv, dpy))
+ return drv;
+ }
+ else {
+ if (!defaultDriver)
+ defaultDriver = drv;
+ }
+ }
+
+ return defaultDriver;
+}
+
+
+/**
+ * Load a driver and save it.
+ */
+const char *
+_eglPreloadDriver(_EGLDisplay *dpy)
+{
+ char *path, *args;
+ _EGLDriver *drv;
+ EGLint i;
+
+ path = _eglChooseDriver(dpy, &args);
+ if (!path)
+ return NULL;
+
+ for (i = 0; i < _eglGlobal.NumDrivers; i++) {
+ drv = _eglGlobal.Drivers[i];
+ if (strcmp(drv->Path, path) == 0) {
+ _eglLog(_EGL_DEBUG, "Driver %s is already preloaded",
+ drv->Name);
+ free(path);
+ if (args)
+ free(args);
+ return drv->Name;
+ }
+ }
+
+ drv = _eglLoadDriver(dpy, path, args);
+ if (!drv)
+ return NULL;
+
+ /* update the global notion of supported APIs */
+ _eglGlobal.ClientAPIsMask |= drv->ClientAPIsMask;
+
+ _eglGlobal.Drivers[_eglGlobal.NumDrivers++] = drv;
+
+ return drv->Name;
+}
+
+
+/**
+ * Open a preloaded driver.
+ */
+_EGLDriver *
+_eglOpenDriver(_EGLDisplay *dpy)
+{
+ _EGLDriver *drv = _eglMatchDriver(dpy);
return drv;
}
+/**
+ * Close a preloaded driver.
+ */
EGLBoolean
-_eglCloseDriver(_EGLDriver *drv, EGLDisplay dpy)
+_eglCloseDriver(_EGLDriver *drv, _EGLDisplay *dpy)
{
- void *handle = drv->LibHandle;
- EGLBoolean b;
- fprintf(stderr, "EGL debug: Closing driver\n");
+ _eglReleaseDisplayResources(drv, dpy);
+ drv->API.Terminate(drv, dpy);
+ return EGL_TRUE;
+}
- /*
- * XXX check for currently bound context/surfaces and delete them?
- */
- b = drv->Terminate(drv, dpy);
- dlclose(handle);
- return b;
+/**
+ * Unload preloaded drivers.
+ */
+void
+_eglUnloadDrivers(void)
+{
+ EGLint i;
+ for (i = 0; i < _eglGlobal.NumDrivers; i++) {
+ _EGLDriver *drv = _eglGlobal.Drivers[i];
+ lib_handle handle = drv->LibHandle;
+
+ if (drv->Path)
+ free((char *) drv->Path);
+ if (drv->Args)
+ free((char *) drv->Args);
+
+ /* destroy driver */
+ if (drv->Unload)
+ drv->Unload(drv);
+
+ if (handle)
+ close_library(handle);
+ _eglGlobal.Drivers[i] = NULL;
+ }
+
+ _eglGlobal.NumDrivers = 0;
}
/* If a pointer is set to NULL, then the device driver _really_ has
* to implement it.
*/
- drv->Initialize = NULL;
- drv->Terminate = NULL;
-
- drv->GetConfigs = _eglGetConfigs;
- drv->ChooseConfig = _eglChooseConfig;
- drv->GetConfigAttrib = _eglGetConfigAttrib;
-
- drv->CreateContext = _eglCreateContext;
- drv->DestroyContext = _eglDestroyContext;
- drv->MakeCurrent = _eglMakeCurrent;
- drv->QueryContext = _eglQueryContext;
-
- drv->CreateWindowSurface = _eglCreateWindowSurface;
- drv->CreatePixmapSurface = _eglCreatePixmapSurface;
- drv->CreatePbufferSurface = _eglCreatePbufferSurface;
- drv->DestroySurface = _eglDestroySurface;
- drv->QuerySurface = _eglQuerySurface;
- drv->SurfaceAttrib = _eglSurfaceAttrib;
- drv->BindTexImage = _eglBindTexImage;
- drv->ReleaseTexImage = _eglReleaseTexImage;
- drv->SwapInterval = _eglSwapInterval;
- drv->SwapBuffers = _eglSwapBuffers;
- drv->CopyBuffers = _eglCopyBuffers;
-
- drv->QueryString = _eglQueryString;
- drv->WaitGL = _eglWaitGL;
- drv->WaitNative = _eglWaitNative;
-
- /* EGL_MESA_screen */
- drv->ChooseModeMESA = _eglChooseModeMESA;
- drv->GetModesMESA = _eglGetModesMESA;
- drv->GetModeAttribMESA = _eglGetModeAttribMESA;
- drv->GetScreensMESA = _eglGetScreensMESA;
- drv->CreateScreenSurfaceMESA = _eglCreateScreenSurfaceMESA;
- drv->ShowSurfaceMESA = _eglShowSurfaceMESA;
- drv->ScreenPositionMESA = _eglScreenPositionMESA;
- drv->QueryScreenMESA = _eglQueryScreenMESA;
- drv->QueryScreenSurfaceMESA = _eglQueryScreenSurfaceMESA;
- drv->QueryScreenModeMESA = _eglQueryScreenModeMESA;
- drv->QueryModeStringMESA = _eglQueryModeStringMESA;
+ drv->API.Initialize = NULL;
+ drv->API.Terminate = NULL;
+
+ drv->API.GetConfigs = _eglGetConfigs;
+ drv->API.ChooseConfig = _eglChooseConfig;
+ drv->API.GetConfigAttrib = _eglGetConfigAttrib;
+
+ drv->API.CreateContext = _eglCreateContext;
+ drv->API.DestroyContext = _eglDestroyContext;
+ drv->API.MakeCurrent = _eglMakeCurrent;
+ drv->API.QueryContext = _eglQueryContext;
+
+ drv->API.CreateWindowSurface = _eglCreateWindowSurface;
+ drv->API.CreatePixmapSurface = _eglCreatePixmapSurface;
+ drv->API.CreatePbufferSurface = _eglCreatePbufferSurface;
+ drv->API.DestroySurface = _eglDestroySurface;
+ drv->API.QuerySurface = _eglQuerySurface;
+ drv->API.SurfaceAttrib = _eglSurfaceAttrib;
+ drv->API.BindTexImage = _eglBindTexImage;
+ drv->API.ReleaseTexImage = _eglReleaseTexImage;
+ drv->API.SwapInterval = _eglSwapInterval;
+ drv->API.SwapBuffers = _eglSwapBuffers;
+ drv->API.CopyBuffers = _eglCopyBuffers;
+
+ drv->API.QueryString = _eglQueryString;
+ drv->API.WaitGL = _eglWaitGL;
+ drv->API.WaitNative = _eglWaitNative;
+
+#ifdef EGL_MESA_screen_surface
+ drv->API.ChooseModeMESA = _eglChooseModeMESA;
+ drv->API.GetModesMESA = _eglGetModesMESA;
+ drv->API.GetModeAttribMESA = _eglGetModeAttribMESA;
+ drv->API.GetScreensMESA = _eglGetScreensMESA;
+ drv->API.CreateScreenSurfaceMESA = _eglCreateScreenSurfaceMESA;
+ drv->API.ShowScreenSurfaceMESA = _eglShowScreenSurfaceMESA;
+ drv->API.ScreenPositionMESA = _eglScreenPositionMESA;
+ drv->API.QueryScreenMESA = _eglQueryScreenMESA;
+ drv->API.QueryScreenSurfaceMESA = _eglQueryScreenSurfaceMESA;
+ drv->API.QueryScreenModeMESA = _eglQueryScreenModeMESA;
+ drv->API.QueryModeStringMESA = _eglQueryModeStringMESA;
+#endif /* EGL_MESA_screen_surface */
+
+#ifdef EGL_VERSION_1_2
+ drv->API.CreatePbufferFromClientBuffer = _eglCreatePbufferFromClientBuffer;
+#endif /* EGL_VERSION_1_2 */
}
+
/**
- * Examine the individual extension enable/disable flags and recompute
- * the driver's Extensions string.
+ * Try to determine which EGL APIs (OpenGL, OpenGL ES, OpenVG, etc)
+ * are supported on the system by looking for standard library names.
*/
-static void
-UpdateExtensionsString(_EGLDriver *drv)
-{
- drv->Extensions[0] = 0;
-
- if (drv->MESA_screen_surface)
- strcat(drv->Extensions, "EGL_MESA_screen_surface ");
- if (drv->MESA_copy_context)
- strcat(drv->Extensions, "EGL_MESA_copy_context ");
- assert(strlen(drv->Extensions) < MAX_EXTENSIONS_LEN);
-}
-
-
-
-const char *
-_eglQueryString(_EGLDriver *drv, EGLDisplay dpy, EGLint name)
+EGLint
+_eglFindAPIs(void)
{
- (void) drv;
- (void) dpy;
- switch (name) {
- case EGL_VENDOR:
- return "Mesa Project";
- case EGL_VERSION:
- return "1.0";
- case EGL_EXTENSIONS:
- UpdateExtensionsString(drv);
- return drv->Extensions;
- default:
- _eglError(EGL_BAD_PARAMETER, "eglQueryString");
- return NULL;
+ EGLint mask = 0x0;
+ lib_handle lib;
+#if defined(_EGL_PLATFORM_WINDOWS)
+ /* XXX not sure about these names */
+ const char *es1_libname = "libGLESv1_CM.dll";
+ const char *es2_libname = "libGLESv2.dll";
+ const char *gl_libname = "OpenGL32.dll";
+ const char *vg_libname = "libOpenVG.dll";
+#elif defined(_EGL_PLATFORM_X)
+ const char *es1_libname = "libGLESv1_CM.so";
+ const char *es2_libname = "libGLESv2.so";
+ const char *gl_libname = "libGL.so";
+ const char *vg_libname = "libOpenVG.so";
+#endif
+
+ if ((lib = open_library(es1_libname))) {
+ close_library(lib);
+ mask |= EGL_OPENGL_ES_BIT;
}
-}
+ if ((lib = open_library(es2_libname))) {
+ close_library(lib);
+ mask |= EGL_OPENGL_ES2_BIT;
+ }
-EGLBoolean
-_eglWaitGL(_EGLDriver *drv, EGLDisplay dpy)
-{
- /* just a placeholder */
- (void) drv;
- (void) dpy;
- return EGL_TRUE;
-}
+ if ((lib = open_library(gl_libname))) {
+ close_library(lib);
+ mask |= EGL_OPENGL_BIT;
+ }
+ if ((lib = open_library(vg_libname))) {
+ close_library(lib);
+ mask |= EGL_OPENVG_BIT;
+ }
-EGLBoolean
-_eglWaitNative(_EGLDriver *drv, EGLDisplay dpy, EGLint engine)
-{
- /* just a placeholder */
- (void) drv;
- (void) dpy;
- (void) engine;
- return EGL_TRUE;
+ return mask;
}
projects / mesa.git / blobdiff