So I’m doing some work on cycles and it’s rendering quite slowly. I’ve heard you can switch to GPU rendering rather than CPU so I do some research. I find that because my graphics card is Intel, I have to use OpenCL. So I do some more researching and use a batch file to open blender with CYCLES_OPENCL_TEST=ALL. Now I can select my graphics card (Intel® HD Graphics) in System Preferences. I can now selct GPU Compute rather than CPU in my render options. I do that but whenever I try to render something, I ge - OpenCL Build Failed: Errors in Console.
If your graphics card is ‘intel’… IIRC this just means that the cpu is doing a bunch of gpu based calculations… you will render faster via cpu rather then getting opencl to work. OpenCL is really only useful for AMD based graphics cards (not AMD cpus)…
Also when creating these sorts of posts in future, you should also mention your cpu model / gpu model / ram / os that you are using. It will help us figure out what exactly is the problem.
What machine are you using ? Are you using a laptop or desktop. If a laptop then you’ll have to buy a new machine which has a dedicated Nvidia graphics card. If a desktop, buy a graphics card, open the computer case, plug in the graphics card and install supplied drivers.
The 2.75 version of Cycles will have OpenCL support (meaning that you will be able to use the Intel onboard graphics or an ATI card as a computing device). Though I don’t really expect the Intel graphics to give much of a boost if the chip is more than a few years old.