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/* The ARB_shader_atomic_counters says:
*
* "It is legal for some shaders to provide a layout qualifier for
* a uniform variable of the same name, while another shader does
* not provide a layout qualifier for a uniform variable of the
* same name, but if provided, all provided layout qualifiers
* must be equal for a uniform variable of the same name, and if
* not provided, all implicitly provided layout qualifiers must
* be equal for a uniform variable of the same name."
*
* Verify that a link error happens when using different binding
* points for an atomic counter with the same name in different
* compilation units.
*/
[require]
GL >= 3.10
GLSL >= 1.40
GL_ARB_shader_atomic_counters
[vertex shader]
#version 140
#extension GL_ARB_shader_atomic_counters: require
layout (binding = 0) uniform atomic_uint x;
in vec4 piglit_vertex;
out vec4 vs_fs;
void main()
{
vs_fs = vec4(atomicCounter(x));
gl_Position = piglit_vertex;
}
[fragment shader]
#version 140
#extension GL_ARB_shader_atomic_counters: require
layout (binding = 1) uniform atomic_uint x;
in vec4 vs_fs;
out vec4 fs_out;
void main()
{
fs_out = vs_fs * atomicCounter(x);
}
[test]
link error
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