iMX6 glLinkProgram segmentation fault

hartmutbehrensf — Tue, 06 Jun 2017 14:27:00 GMT

Hi,

In my application I use GL_RGBA32F and GL_RGBA32I textures as a mechanism to upload parameters to a shader (filter parameters are set to GL_NEAREST). The parameter values are retrieved in the shader using the GLSL snippet shown below. This mechanism has been tested and works well on many platforms, but on the iMX6 a segmentation fault is generated when glLinkProgram is called. However no GL error is reported, and the GL program info log is also empty.

Is anyone able to provide any insight and/or workaround for this problem ?

uniform sampler2D u_floatSampler;
uniform isampler2D u_integerSampler;

mat4 getModelMatrix(uint Index) { return mat4(texelFetch( u_floatSampler, ivec2( (Index * uint(13)) + uint(0), 0), 0),
texelFetch( u_floatSampler, ivec2( (Index * uint(13)) + uint(1), 0), 0),
texelFetch( u_floatSampler, ivec2( (Index * uint(13)) + uint(2), 0), 0),
texelFetch( u_floatSampler, ivec2( (Index * uint(13)) + uint(3), 0), 0)); }

mat4 getPreviousModelMatrix(uint Index) { return mat4(texelFetch( u_floatSampler, ivec2( (Index * uint(13)) + uint(4), 0), 0),
texelFetch( u_floatSampler, ivec2( (Index * uint(13)) + uint(5), 0), 0),
texelFetch( u_floatSampler, ivec2( (Index * uint(13)) + uint(6), 0), 0),
texelFetch( u_floatSampler, ivec2( (Index * uint(13)) + uint(7), 0), 0)); }

mat4 getInverseModelMatrix(uint Index) { return mat4(texelFetch( u_floatSampler, ivec2( (Index * uint(13)) + uint(8), 0), 0),
texelFetch( u_floatSampler, ivec2( (Index * uint(13)) + uint(9), 0), 0),
texelFetch( u_floatSampler, ivec2( (Index * uint(13)) + uint(10), 0), 0),
texelFetch( u_floatSampler, ivec2( (Index * uint(13)) + uint(11), 0), 0)); }

int getMaterialID(uint Index) { return int(texelFetch( u_integerSampler, ivec2( (Index * uint(13)) + uint(12), 0), 0).x); }
int getObjectID(uint Index) { return int(texelFetch( u_integerSampler, ivec2( (Index * uint(13)) + uint(12), 0), 0).y); }
int getSplineID(uint Index) { return int(texelFetch( u_integerSampler, ivec2( (Index * uint(13)) + uint(12), 0), 0).z); }

Re: iMX6 glLinkProgram segmentation fault

Bio_TICFSL — Tue, 11 Jul 2017 15:53:52 GMT

Hi Hartmut

Looks like this is related to other thread, Please check:

https://community.nxp.com/thread/453853

Regards

topic iMX6 glLinkProgram segmentation fault in i.MX Processors

iMX6 glLinkProgram segmentation fault

Re: iMX6 glLinkProgram segmentation fault