Hi All!

I am using nuklear for GUI: https://github.com/vurtun/nuklear . I want to draw an image inside a nuklear window. The image is represented as 1D array [r, g, b, a, r, g, b, a, ...]. I create an OpenGL texture, and try to draw inside nuklear window with
the following code:

/* -------------------------------------- */

// Create an image. For now all pixels are the same.
int i = 0;
for (unsigned int y = 0; y < HEIGHT_IMG; ++y){
for (unsigned int x = 0; x < WIDTH_IMG; ++x){
imageData[i] = 174;
imageData[i + 1] = 79;
imageData[i + 2] = 206;
imageData[i + 3] = 255;

i += 4;
}
}

// creating a texture
unsigned int texture = 42;
glGenTextures(1, &texture);
glBindTexture(GL_TEXTURE_2D, texture);

// set necessary texture parameters
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);

// allocate memory and set texture data
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, WIDTH_IMG, HEIGHT_IMG, 0, GL_RGBA, GL_UNSIGNED_BYTE, imageData);

// render texture inside current nuklear window
myImage = nk_image_id((int)texture);
nk_draw_image(canvas, total_space, &myImage, grid_color);

/* ------------------------------------------------- */

For full program listing, along with instruction on how to run this code please see https://github.com/mandelbulb-4d/mandelbulb-4d/blob/a3b9ee89a5ed3f3046204bcaa3e8a6a9c52f7a0c/src2/simple_window/drawing.cpp#L51 .

The problem is that when I run this code, I see some random noise instead of a solid colored square. See screenshot here: https://user-images.githubusercontent.com/2273090/27911284-34ed78d6-6261-11e7-938a-f48bc9987a0a.png . Why might this be happening?

Please help me! Any suggestions/comments are welcome.

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