#Mac image vectorizer for mac 10.6.8 mac os x
#Mac image vectorizer for mac 10.6.8 update
#Mac image vectorizer for mac 10.6.8 software

#Mac image vectorizer for mac 10.6.8 software

(This approach can be used even if running IDL in unlicensed demonstration mode.)ī.) Alternatively, from an IDL session IDL> command prompt, issue the following command to change your IDL Preferences to cause IDL to use software rendering by default: On the left pane of the Preferences dialog, expand IDL and select Graphics, and then on the right choose the 'Default rendering method for object graphics' setting for Software (1)). If it is not possible for you to upgrade to the latest version of XQuartz or the problem persists even after upgrading XQuartz, other workarounds for this problem include: 1.) Configure IDL to use Software Rendering or 2.) Downgrade to XQuartz 2.7.1.ġ.) Configure IDL to use Software Rendering.Ī.) You can change your IDL preference to use Software rendering via the IDL Workbench Preferences dialog. XQuartz can be obtained from the web site location: The problem described above may be resolved by upgrading to the latest compatible stable release version of XQuartz (v2.7.4 at the time this article was written). Invalid memory access of location 0x1 rip=0x10f1fa3f4 % IDLGRSRCDEST::DRAW: Unable to acquire device context. % IDLGRSRCDEST::DRAW: Failure to acquire window rendering context. You can determine your version of XQuartz by launching XQuartz and then selecting the menu item 'X11 > About X11'.īelow are examples of reported error messages also associated with this problem.

#Mac image vectorizer for mac 10.6.8 mac os x

It may also affect ENVI/IDL on Mac OS X 10.7 or 10.6 when using XQuartz 2.7.2 or earlier.) (Also, we have not confirmed, but it may be possible that this problem can affect IDL 8.1 and 8.0. IDL object graphics (including the IDL 8 function graphics and other routines using object graphics features) used in ENVI 5.0 and IDL 8.2 can fail and even cause ENVI or the IDL Workbench to freeze or crash, when using IDL hardware rendering, Mac OS X 10.8 (Mountain Lion) and XQuartz version 2.7.2. However, customers have reported being able to successfully use these versions of ENVI and IDL on their Mac OS X 10.8 systems. From 0.499 we read the table forward and from 500-999 we read it backward.PROBLEM DESCRIPTION Note that ENVI 5.0 and IDL 8.2 are not officially supported on Mac OS X 10.8 (Mountain Lion). It is called once every 5 ms period, right after timer A hits TACCR1. _bis_SR_register(CPUOFF | GIE) įinally, our ISR (interrupt service routine). The return is kind of silly (we're never returning anywhere) but keeps gcc happy. Set the initial TACCR1 to 0 (the LED is fully off): TACCR1 = 0

#Mac image vectorizer for mac 10.6.8 update

We will use the interrupt to update the TACCR1 value according to the breathing curve. CCIE enables interrupts every time the timer hits TACCR1. So, by giving TACCR1 values within the range, we'll make the LED glow more or less (the higher, the brighter). We configure it so that it's high (set) when it counts to TACCR1 and low (reset) when it counts to TACCR0. Remember we set pin 1.6 to follow 'timer A's output'? Now, here's where we define how that output behaves. the ratio of time it stays lit on each period). This is where the PWM magic happens: as it turns out, the LED brightness is proportional to its duty cycle (ie. Higher values will flicker less, but waste more power since we're waking up the CPU more often. At 125 KHz, that will give us a period of 5 milliseconds, or a frequency of 200 Hz. Now we'll set up Timer A to count up to 625. We also set pin 1.6 to follow TA0.1 (timer A's output, more on it below). Next, we'll make pin 1.6, which is hooked up to the green LED, an output (SLAU144E p.8-3). We'll set it up so that it uses MCLK / 8, that's 125 KHz (see SLAU144E p.5-15): BCSCTL2 |= DIVS_3 We are going to use SMCLK as the clock source. This is common to most projects: stop the watchdog and set MCLK at 1 MHz: int main(void) We only need the 'breath in' portion of the wave (between -PI/2 and 0) as we can easily calculate the 'breath out' side by mirroring the wave: #include Since math operations are expensive on such a limited instruction set, we'll start off with a pre-calculated sine table.

We are going to use PWM to drive the LED and change its brightness according to the above graph.