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Diffstat (limited to 'src/egl/main/egldispatchstubs.c')
-rw-r--r--src/egl/main/egldispatchstubs.c110
1 files changed, 110 insertions, 0 deletions
diff --git a/src/egl/main/egldispatchstubs.c b/src/egl/main/egldispatchstubs.c
new file mode 100644
index 00000000000..e02abd7a9e0
--- /dev/null
+++ b/src/egl/main/egldispatchstubs.c
@@ -0,0 +1,110 @@
+#include "egldispatchstubs.h"
+#include "g_egldispatchstubs.h"
+
+#include <string.h>
+
+#include "eglcurrent.h"
+
+static const __EGLapiExports *exports;
+
+const int __EGL_DISPATCH_FUNC_COUNT = __EGL_DISPATCH_COUNT;
+int __EGL_DISPATCH_FUNC_INDICES[__EGL_DISPATCH_COUNT + 1];
+
+static int FindProcIndex(const char *name)
+{
+ unsigned first = 0;
+ unsigned last = __EGL_DISPATCH_COUNT - 1;
+
+ while (first <= last) {
+ unsigned middle = (first + last) / 2;
+ int comp = strcmp(name,
+ __EGL_DISPATCH_FUNC_NAMES[middle]);
+
+ if (comp > 0)
+ first = middle + 1;
+ else if (comp < 0)
+ last = middle - 1;
+ else
+ return middle;
+ }
+
+ /* Just point to the dummy entry at the end of the respective table */
+ return __EGL_DISPATCH_COUNT;
+}
+
+void __eglInitDispatchStubs(const __EGLapiExports *exportsTable)
+{
+ int i;
+ exports = exportsTable;
+ for (i=0; i<__EGL_DISPATCH_FUNC_COUNT; i++) {
+ __EGL_DISPATCH_FUNC_INDICES[i] = -1;
+ }
+}
+
+void __eglSetDispatchIndex(const char *name, int dispatchIndex)
+{
+ int index = FindProcIndex(name);
+ __EGL_DISPATCH_FUNC_INDICES[index] = dispatchIndex;
+}
+
+void *__eglDispatchFindDispatchFunction(const char *name)
+{
+ int index = FindProcIndex(name);
+ return (void *) __EGL_DISPATCH_FUNCS[index];
+}
+
+static __eglMustCastToProperFunctionPointerType FetchVendorFunc(__EGLvendorInfo *vendor,
+ int index, EGLint errorCode)
+{
+ __eglMustCastToProperFunctionPointerType func = NULL;
+
+ if (vendor != NULL) {
+ func = exports->fetchDispatchEntry(vendor, __EGL_DISPATCH_FUNC_INDICES[index]);
+ }
+ if (func == NULL) {
+ if (errorCode != EGL_SUCCESS) {
+ _eglError(errorCode, __EGL_DISPATCH_FUNC_NAMES[index]);
+ }
+ return NULL;
+ }
+
+ if (!exports->setLastVendor(vendor)) {
+ // Don't bother trying to set an error code in libglvnd. If
+ // setLastVendor failed, then setEGLError would also fail.
+ _eglError(errorCode, __EGL_DISPATCH_FUNC_NAMES[index]);
+ return NULL;
+ }
+
+ return func;
+}
+
+__eglMustCastToProperFunctionPointerType __eglDispatchFetchByCurrent(int index)
+{
+ __EGLvendorInfo *vendor;
+
+ // Note: This is only used for the eglWait* functions. For those, if
+ // there's no current context, then they're supposed to do nothing but
+ // return success.
+ exports->threadInit();
+ vendor = exports->getCurrentVendor();
+ return FetchVendorFunc(vendor, index, EGL_SUCCESS);
+}
+
+__eglMustCastToProperFunctionPointerType __eglDispatchFetchByDisplay(EGLDisplay dpy, int index)
+{
+ __EGLvendorInfo *vendor;
+
+ exports->threadInit();
+ vendor = exports->getVendorFromDisplay(dpy);
+ return FetchVendorFunc(vendor, index, EGL_BAD_DISPLAY);
+}
+
+__eglMustCastToProperFunctionPointerType __eglDispatchFetchByDevice(EGLDeviceEXT dev, int index)
+{
+ __EGLvendorInfo *vendor;
+
+ exports->threadInit();
+ vendor = exports->getVendorFromDevice(dev);
+ return FetchVendorFunc(vendor, index, EGL_BAD_DEVICE_EXT);
+}
+