cascade multi shader

sanzhang — Wed, 07 Sep 2016 14:42:29 GMT

How do we cascade multi shaders (vertex and fragment) on imx6? For example, I have loaded an image as a texture to GPU, and I want to find edges in an image using the line detection technology with hough transform. First, a frag shader is created to change a color image to a grey image. Next, a kernel filter is adopted in another fragment shader to find all the edges in the previous grey image. Finally, a hough transform technology is used in other shader files (maybe fragment shader, geometry shader, vertex shader) based on the result of the second step. If I could look into some related documents and sample codes, it will be great. Thanks in advance.

Re: cascade multi shader

igorpadykov — Mon, 12 Sep 2016 01:52:58 GMT

Hi San

please check attached document and

AN4629 Fast Image Processing with i.MX 6 Series
http://www.nxp.com/files/32bit/doc/app_note/AN4629.pdf
http://imxcv.blogspot.ca/2014/02/building-opencv-24x-for-freescales-imx6.html

Best regards
igor
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topic Re: cascade multi shader in i.MX Processors

cascade multi shader

Re: cascade multi shader