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OpenCL: Difference between revisions
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* 3-component data types are aligned to 4 components. I.e. an array of <code>uchar3</code> with 4 elements will be equivalent to an array of <code>uchar4</code> with 4 elements. | * 3-component data types are aligned to 4 components. I.e. an array of <code>uchar3</code> with 4 elements will be equivalent to an array of <code>uchar4</code> with 4 elements. | ||
==OpenGL Interop== | |||
See [https://software.intel.com/content/www/us/en/develop/articles/opencl-and-opengl-interoperability-tutorial.html OpenCL™ and OpenGL* Interoperability Tutoria]. | |||
In C++, you can use [https://github.khronos.org/OpenCL-CLHPP/classcl_1_1_image_g_l.html <code>cl::ImageGL</code>] to access textures in OpenGL. | |||
Note that <code>cl::Image</code> and <code>cl::Buffer</code> are not the same thing. A buffer is a contiguous section of memory whereas an image is a mipmapped texture. Interchanging them will result in <code>CL_INVALID_MEM_OBJECT</code> errors or similar. | |||
I recommend writing to a separate buffer and copying to images. | |||
==Advanced Topics== | ==Advanced Topics== | ||
====Local Memory v. Global Memory==== | ====Local Memory v. Global Memory==== | ||