Chia-I Wu
dc4f845c37
This is a really simple mechanism. There is no atomicity and the caller is expected to hold the display lock.
95 lines
2.1 KiB
C
95 lines
2.1 KiB
C
#include <string.h>
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#include "eglsync.h"
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#include "eglcurrent.h"
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#include "egllog.h"
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#ifdef EGL_KHR_reusable_sync
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/**
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* Parse the list of sync attributes and return the proper error code.
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*/
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static EGLint
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_eglParseSyncAttribList(_EGLSync *sync, const EGLint *attrib_list)
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{
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EGLint i, err = EGL_SUCCESS;
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if (!attrib_list)
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return EGL_SUCCESS;
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for (i = 0; attrib_list[i] != EGL_NONE; i++) {
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EGLint attr = attrib_list[i++];
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EGLint val = attrib_list[i];
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switch (attr) {
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default:
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(void) val;
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err = EGL_BAD_ATTRIBUTE;
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break;
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}
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if (err != EGL_SUCCESS) {
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_eglLog(_EGL_DEBUG, "bad sync attribute 0x%04x", attr);
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break;
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}
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}
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return err;
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}
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EGLBoolean
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_eglInitSync(_EGLSync *sync, _EGLDisplay *dpy, EGLenum type,
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const EGLint *attrib_list)
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{
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EGLint err;
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if (!(type == EGL_SYNC_REUSABLE_KHR && dpy->Extensions.KHR_reusable_sync) &&
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!(type == EGL_SYNC_FENCE_KHR && dpy->Extensions.KHR_fence_sync))
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return _eglError(EGL_BAD_ATTRIBUTE, "eglCreateSyncKHR");
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_eglInitResource(&sync->Resource, sizeof(*sync), dpy);
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sync->Type = type;
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sync->SyncStatus = EGL_UNSIGNALED_KHR;
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sync->SyncCondition = EGL_SYNC_PRIOR_COMMANDS_COMPLETE_KHR;
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err = _eglParseSyncAttribList(sync, attrib_list);
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if (err != EGL_SUCCESS)
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return _eglError(err, "eglCreateSyncKHR");
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return EGL_TRUE;
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}
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EGLBoolean
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_eglGetSyncAttribKHR(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync,
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EGLint attribute, EGLint *value)
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{
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if (!value)
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return _eglError(EGL_BAD_PARAMETER, "eglGetConfigs");
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switch (attribute) {
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case EGL_SYNC_TYPE_KHR:
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*value = sync->Type;
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break;
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case EGL_SYNC_STATUS_KHR:
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*value = sync->SyncStatus;
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break;
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case EGL_SYNC_CONDITION_KHR:
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if (sync->Type != EGL_SYNC_FENCE_KHR)
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return _eglError(EGL_BAD_ATTRIBUTE, "eglGetSyncAttribKHR");
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*value = sync->SyncCondition;
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break;
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default:
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return _eglError(EGL_BAD_ATTRIBUTE, "eglGetSyncAttribKHR");
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break;
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}
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return EGL_TRUE;
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}
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#endif /* EGL_KHR_reusable_sync */
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