How to use random matrix in fragment shader in samsung android devices?

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I am new to opengl ,This is the fragment shader code i am using for rendering but in all samsung devices it shows only red color and in nexus 4,5 it gives correct result, there is no linking error , even if i simply initialize matrix without using,it gives red color , i searched and found there is some issue with mali gpu. How can i define a random matrix and use that matrix in fragment shader code so that it gives me correct result on all platform.

        fragmentShaderCode5 = 
        "#extension GL_OES_EGL_image_external :  require\n"
        + "precision lowp float;"
        + "varying vec2 v_TexCoordinate;"
        + " mat4 colorMatrix;"
        + "uniform samplerExternalOES texture;"
        + "void main()\n {"
        + " mat4 colorMatrix = mat4(0.3588f, 0.7044f, 0.1368f, 0f,            
          0.2990f,0.5870f, 0.1140f, 0f, 0.2392f, 0.4696f, 0.0912f ,0f, 
          0f,0f,0f,0f);"
        + " vec4 color = texture2D(texture, v_TexCoordinate);"
        + " vec4 outputColor = color*colorMatrix ;"
        + " gl_FragColor =  (0.1 * color) + ((1.0 - 0.1) * 
          outputColor);"
        + "}";

asked 17 secs ago

Gulshan Mishra

1

How to use random matrix in fragment shader in samsung android devices?