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Assign integer values to color in opengl es 2.0


Assign integer values to color in opengl es 2.0

By : dunny
Date : November 25 2020, 01:01 AM
will help you As far as I know, gl_FragColor must always be floating point. However, if you know the colour buffer is 8 bits per channel it shouldn't be hard to force whatever you want into it. You might consider
code :


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OpenGL ES 2.0 Failing to correctly assign the color attribute

OpenGL ES 2.0 Failing to correctly assign the color attribute


By : Sergey
Date : March 29 2020, 07:55 AM
it fixes the issue You need to make your glBindAttribLocation() calls before linking the shader program.
If you link a program without specifying the location of attributes with either glBindAttribLocation(), or with layout qualifiers in the shader code, the attribute locations will be assigned automatically when the shader program is linked. If you call glBindAttribLocation() after linking the program, the new locations will only take effect if you link the shader program again.
How to convert Color.RED code into integer values of color in Android Java?

How to convert Color.RED code into integer values of color in Android Java?


By : user2288768
Date : March 29 2020, 07:55 AM
To fix the issue you can do In my android projects i set color for PieChart like this , Try this:
code :
Color.parseColor("#FF0000")

int color = 0xFFFF0000;
How does OpenGL resolve a multisampled FBO-attached color buffer whose pixel format is integer-based?

How does OpenGL resolve a multisampled FBO-attached color buffer whose pixel format is integer-based?


By : user3595274
Date : March 29 2020, 07:55 AM
may help you . On page 511 of the OpenGL 4.5 spec, under section 18.3.1 "Blitting Pixel Rectangles", it says (emphasis added):
Why do my integer array elements contain the wrong values when I assign it character values in C and how can I fix this?

Why do my integer array elements contain the wrong values when I assign it character values in C and how can I fix this?


By : Taskin Malek
Date : March 29 2020, 07:55 AM
I wish this helpful for you I wrote the following code: , The problem is mismatched index values.
code :
for(j=0; j<4; j++)
      printf("array[i] %d\n",array[i]);
for(j=0; j<4; j++)                       // j is the loop control variable
      printf("array[j] %d\n",array[j]);  // so, use j as index here
OpenGL GLSL Send color as integer to shader to be decomposed as vec4 RGBA

OpenGL GLSL Send color as integer to shader to be decomposed as vec4 RGBA


By : user2030844
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , Aight, so this did the job for me:
Having managed data as int[] where it's tightly packed array of only colors (where int format is: RGBA meaning 0xAABBGGRR), then defining vertex attribute as: GL.VertexAttribPointer(index, 4, VertexAttribPointerType.UnsignedByte, true, sizeof(int), IntPtr.Zero) and using it in shader as: in vec4 in_color;.
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