Brian Paul | adbff7e | 2005-04-22 21:09:39 +0000 | [diff] [blame^] | 1 | #include <assert.h> |
| 2 | #include <dlfcn.h> |
| 3 | #include <stdio.h> |
| 4 | #include <string.h> |
| 5 | #include "eglconfig.h" |
| 6 | #include "eglcontext.h" |
| 7 | #include "egldisplay.h" |
| 8 | #include "egldriver.h" |
| 9 | #include "eglglobals.h" |
| 10 | #include "eglmode.h" |
| 11 | #include "eglsurface.h" |
| 12 | |
| 13 | |
| 14 | const char *DefaultDriverName = "demo"; |
| 15 | |
| 16 | |
| 17 | /** |
| 18 | * Choose and open/init the hardware driver for the given EGLDisplay. |
| 19 | * Previously, the EGLDisplay was created with _eglNewDisplay() where |
| 20 | * we recorded the user's NativeDisplayType parameter. |
| 21 | * |
| 22 | * Now we'll use the NativeDisplayType value. |
| 23 | * |
| 24 | * Currently, the native display value is treated as a string. |
| 25 | * If the first character is ':' we interpret it as a screen or card index |
| 26 | * number (i.e. ":0" or ":1", etc) |
| 27 | * Else if the first character is '!' we interpret it as specific driver name |
| 28 | * (i.e. "!r200" or "!i830". |
| 29 | */ |
| 30 | _EGLDriver * |
| 31 | _eglChooseDriver(EGLDisplay display) |
| 32 | { |
| 33 | _EGLDisplay *dpy = _eglLookupDisplay(display); |
| 34 | _EGLDriver *drv; |
| 35 | const char *driverName = DefaultDriverName; |
| 36 | const char *name; |
| 37 | |
| 38 | assert(dpy); |
| 39 | |
| 40 | name = dpy->Name; |
| 41 | if (!name) { |
| 42 | /* use default */ |
| 43 | } |
| 44 | else if (name[0] == ':' && (name[1] >= '0' && name[1] <= '9') && !name[2]) { |
| 45 | printf("EGL: Use driver for screen: %s\n", name); |
| 46 | /* XXX probe hardware here to determine which driver to open */ |
| 47 | /* driverName = "something"; */ |
| 48 | } |
| 49 | else if (name[0] == '!') { |
| 50 | /* use specified driver name */ |
| 51 | driverName = name + 1; |
| 52 | printf("EGL: Use driver named %s\n", driverName); |
| 53 | } |
| 54 | else { |
| 55 | /* Maybe display was returned by XOpenDisplay? */ |
| 56 | printf("EGL: can't parse display pointer\n"); |
| 57 | } |
| 58 | |
| 59 | drv = _eglOpenDriver(dpy, driverName); |
| 60 | dpy->Driver = drv; |
| 61 | |
| 62 | return drv; |
| 63 | } |
| 64 | |
| 65 | |
| 66 | /** |
| 67 | * Open/load the named driver and call its bootstrap function: _eglMain(). |
| 68 | * \return new _EGLDriver object. |
| 69 | */ |
| 70 | _EGLDriver * |
| 71 | _eglOpenDriver(_EGLDisplay *dpy, const char *driverName) |
| 72 | { |
| 73 | void *lib; |
| 74 | char driverFilename[1000]; |
| 75 | |
| 76 | /* XXX also prepend a directory path??? */ |
| 77 | sprintf(driverFilename, "%sdriver.so", driverName); |
| 78 | |
| 79 | #if 1 |
| 80 | lib = dlopen(driverFilename, RTLD_NOW); |
| 81 | if (lib) { |
| 82 | _EGLDriver *drv; |
| 83 | _EGLMain_t mainFunc; |
| 84 | |
| 85 | mainFunc = (_EGLMain_t) dlsym(lib, "_eglMain"); |
| 86 | if (!mainFunc) { |
| 87 | fprintf(stderr, "_eglMain not found in %s", (char *) driverFilename); |
| 88 | dlclose(lib); |
| 89 | return NULL; |
| 90 | } |
| 91 | |
| 92 | drv = mainFunc(dpy); |
| 93 | if (!drv) { |
| 94 | dlclose(lib); |
| 95 | return NULL; |
| 96 | } |
| 97 | |
| 98 | drv->LibHandle = lib; |
| 99 | drv->Display = dpy; |
| 100 | return drv; |
| 101 | } |
| 102 | else { |
| 103 | fprintf(stderr, "EGLdebug: Error opening %s: %s\n", |
| 104 | driverFilename, dlerror()); |
| 105 | return NULL; |
| 106 | } |
| 107 | #else |
| 108 | /* use built-in driver */ |
| 109 | return _eglDefaultMain(d); |
| 110 | #endif |
| 111 | } |
| 112 | |
| 113 | |
| 114 | EGLBoolean |
| 115 | _eglCloseDriver(_EGLDriver *drv, EGLDisplay dpy) |
| 116 | { |
| 117 | void *handle = drv->LibHandle; |
| 118 | EGLBoolean b; |
| 119 | fprintf(stderr, "EGL debug: Closing driver\n"); |
| 120 | |
| 121 | /* |
| 122 | * XXX check for currently bound context/surfaces and delete them? |
| 123 | */ |
| 124 | |
| 125 | b = drv->Terminate(drv, dpy); |
| 126 | dlclose(handle); |
| 127 | return b; |
| 128 | } |
| 129 | |
| 130 | |
| 131 | /** |
| 132 | * Given a display handle, return the _EGLDriver for that display. |
| 133 | */ |
| 134 | _EGLDriver * |
| 135 | _eglLookupDriver(EGLDisplay dpy) |
| 136 | { |
| 137 | _EGLDisplay *d = _eglLookupDisplay(dpy); |
| 138 | if (d) |
| 139 | return d->Driver; |
| 140 | else |
| 141 | return NULL; |
| 142 | } |
| 143 | |
| 144 | |
| 145 | /** |
| 146 | * Plug all the available fallback routines into the given driver's |
| 147 | * dispatch table. |
| 148 | */ |
| 149 | void |
| 150 | _eglInitDriverFallbacks(_EGLDriver *drv) |
| 151 | { |
| 152 | /* If a pointer is set to NULL, then the device driver _really_ has |
| 153 | * to implement it. |
| 154 | */ |
| 155 | drv->Initialize = NULL; |
| 156 | drv->Terminate = NULL; |
| 157 | |
| 158 | drv->GetConfigs = _eglGetConfigs; |
| 159 | drv->ChooseConfig = _eglChooseConfig; |
| 160 | drv->GetConfigAttrib = _eglGetConfigAttrib; |
| 161 | |
| 162 | drv->CreateContext = _eglCreateContext; |
| 163 | drv->DestroyContext = _eglDestroyContext; |
| 164 | drv->MakeCurrent = _eglMakeCurrent; |
| 165 | drv->QueryContext = _eglQueryContext; |
| 166 | |
| 167 | drv->CreateWindowSurface = _eglCreateWindowSurface; |
| 168 | drv->CreatePixmapSurface = _eglCreatePixmapSurface; |
| 169 | drv->CreatePbufferSurface = _eglCreatePbufferSurface; |
| 170 | drv->DestroySurface = _eglDestroySurface; |
| 171 | drv->QuerySurface = _eglQuerySurface; |
| 172 | drv->SurfaceAttrib = _eglSurfaceAttrib; |
| 173 | drv->BindTexImage = _eglBindTexImage; |
| 174 | drv->ReleaseTexImage = _eglReleaseTexImage; |
| 175 | drv->SwapInterval = _eglSwapInterval; |
| 176 | drv->SwapBuffers = _eglSwapBuffers; |
| 177 | drv->CopyBuffers = _eglCopyBuffers; |
| 178 | |
| 179 | drv->QueryString = _eglQueryString; |
| 180 | drv->WaitGL = _eglWaitGL; |
| 181 | drv->WaitNative = _eglWaitNative; |
| 182 | |
| 183 | /* EGL_MESA_screen */ |
| 184 | drv->GetModesMESA = _eglGetModesMESA; |
| 185 | drv->GetModeAttribMESA = _eglGetModeAttribMESA; |
| 186 | } |
| 187 | |
| 188 | |
| 189 | const char * |
| 190 | _eglQueryString(_EGLDriver *drv, EGLDisplay dpy, EGLint name) |
| 191 | { |
| 192 | (void) drv; |
| 193 | (void) dpy; |
| 194 | switch (name) { |
| 195 | case EGL_VENDOR: |
| 196 | return "Mesa Project"; |
| 197 | case EGL_VERSION: |
| 198 | return "1.0"; |
| 199 | case EGL_EXTENSIONS: |
| 200 | return ""; |
| 201 | default: |
| 202 | _eglError(EGL_BAD_PARAMETER, "eglQueryString"); |
| 203 | return NULL; |
| 204 | } |
| 205 | } |
| 206 | |
| 207 | |
| 208 | EGLBoolean |
| 209 | _eglWaitGL(_EGLDriver *drv, EGLDisplay dpy) |
| 210 | { |
| 211 | /* just a placeholder */ |
| 212 | (void) drv; |
| 213 | (void) dpy; |
| 214 | return EGL_TRUE; |
| 215 | } |
| 216 | |
| 217 | |
| 218 | EGLBoolean |
| 219 | _eglWaitNative(_EGLDriver *drv, EGLDisplay dpy, EGLint engine) |
| 220 | { |
| 221 | /* just a placeholder */ |
| 222 | (void) drv; |
| 223 | (void) dpy; |
| 224 | (void) engine; |
| 225 | return EGL_TRUE; |
| 226 | } |