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[require]
GL >= 4.3
GLSL >= 4.30
GL_ARB_gpu_shader_int64
GL_ARB_shader_clock
[compute shader]
#version 430
#extension GL_ARB_gpu_shader_int64: require
#extension GL_ARB_shader_clock: require
layout(local_size_x = 1) in;
layout(binding = 0) uniform atomic_uint good;
layout(binding = 0) uniform atomic_uint bad;
layout(std430, binding = 0) buffer ssbo_data {
uint64_t ssbo_time[];
};
uniform uint phase;
void main() {
uint64_t start_time = clockARB();
if (phase == 0u) {
ssbo_time[gl_WorkGroupID.x] = start_time;
} else {
int64_t diff = int64_t(start_time - ssbo_time[gl_WorkGroupID.x]);
if (diff > 0l)
atomicCounterIncrement(good);
}
uint64_t late_time = clockARB();
int64_t diff = int64_t(late_time - start_time);
if (diff <= 0l)
atomicCounterIncrement(bad);
}
[test]
atomic counters 2
ssbo 0 64
uniform uint phase 0
compute 8 1 1
memory barrier GL_SHADER_STORAGE_BARRIER_BIT
uniform uint phase 1
compute 8 1 1
probe atomic counter 0 == 8
probe atomic counter 1 == 0
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