diff options
author | Ian Romanick <ian.d.romanick@intel.com> | 2018-08-27 19:07:08 -0700 |
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committer | Ian Romanick <ian.d.romanick@intel.com> | 2018-08-27 19:35:30 -0700 |
commit | 1754ca968711c98d18f36245c8d92a2c9dd1485b (patch) | |
tree | f2c0272c85ca9a7f7af0733c5da6728f55887b0b | |
parent | 073264e08526f2d984ee249c880fdcdf3a825651 (diff) |
nv_shader_atomic_int64: Add atomicCompSwap testsNV_shader_atomic_int64
-rw-r--r-- | tests/spec/nv_shader_atomic_int64/execution/shared-atomicCompSwap-int64.shader_test | 68 | ||||
-rw-r--r-- | tests/spec/nv_shader_atomic_int64/execution/ssbo-atomicCompSwap-int64.shader_test | 89 |
2 files changed, 157 insertions, 0 deletions
diff --git a/tests/spec/nv_shader_atomic_int64/execution/shared-atomicCompSwap-int64.shader_test b/tests/spec/nv_shader_atomic_int64/execution/shared-atomicCompSwap-int64.shader_test new file mode 100644 index 000000000..797d7f8a7 --- /dev/null +++ b/tests/spec/nv_shader_atomic_int64/execution/shared-atomicCompSwap-int64.shader_test @@ -0,0 +1,68 @@ +[require] +GL >= 3.3 +GLSL >= 3.30 +GL_ARB_compute_shader +GL_ARB_shader_atomic_counters +GL_ARB_gpu_shader_int64 +GL_NV_shader_atomic_int64 + +[compute shader] +#version 330 +#extension GL_ARB_compute_shader: require +#extension GL_ARB_shader_atomic_counters: require +#extension GL_ARB_gpu_shader_int64: require +#extension GL_NV_shader_atomic_int64: require + +layout(local_size_x = 32) in; + +shared int64_t value; +shared uint mask; + +layout(binding = 0) uniform atomic_uint pass; +layout(binding = 0) uniform atomic_uint fail; + +void main() +{ + if (gl_LocalInvocationIndex == 0u) { + value = int64_t(0); + mask = 0u; + } + + barrier(); + + /* Each local invocation should see a unique value. Each value + * observed is tracked in "mask." The test automatically fails if a + * duplicate value is observed. The test passes once all 32 possible + * values have been observed. + */ + int64_t f = value; + int64_t a; + + /* This is an open-coded atomicAdd. */ + do { + a = f; + } while ((f = atomicCompSwap(value, f, f + (4L << 28))) != a); + + uint i = uint(uint64_t(f) >> 28) / 4u; + uint bit = i % 32u; + uint m = 1u << bit; + + if (i < 32u) { + /* If the bit was already set, the test fails. */ + uint r = atomicOr(mask, m); + if ((r & m) != 0u) + atomicCounterIncrement(fail); + + /* Once all 32 bits are set, the test passes. */ + if ((r | m) == 0xffffffffu) + atomicCounterIncrement(pass); + } else { + atomicCounterIncrement(fail); + } +} + +[test] +atomic counters 2 +compute 2 3 4 +probe atomic counter 0 == 24 +probe atomic counter 1 == 0 diff --git a/tests/spec/nv_shader_atomic_int64/execution/ssbo-atomicCompSwap-int64.shader_test b/tests/spec/nv_shader_atomic_int64/execution/ssbo-atomicCompSwap-int64.shader_test new file mode 100644 index 000000000..77fbee564 --- /dev/null +++ b/tests/spec/nv_shader_atomic_int64/execution/ssbo-atomicCompSwap-int64.shader_test @@ -0,0 +1,89 @@ +[require] +GL >= 3.3 +GLSL >= 3.30 +GL_ARB_shader_storage_buffer_object +GL_ARB_shader_atomic_counters +GL_ARB_shader_atomic_counter_ops +GL_ARB_gpu_shader5 +GL_ARB_gpu_shader_int64 +GL_NV_shader_atomic_int64 + +[vertex shader passthrough] + +[fragment shader] +#extension GL_ARB_shader_storage_buffer_object: require +#extension GL_ARB_shader_atomic_counters: require +#extension GL_ARB_shader_atomic_counter_ops: require +#extension GL_ARB_gpu_shader5: require +#extension GL_ARB_gpu_shader_int64: require +#extension GL_NV_shader_atomic_int64: require + +layout(binding = 0) buffer bufblock { + int64_t value; +}; + +/* GL_ARB_shader_atomic_counters requires at least 8 total counters. */ +layout(binding = 0) uniform atomic_uint mask[7]; +layout(binding = 0) uniform atomic_uint fail; + +out vec4 color; + +void main() +{ + /* According to issue #22 of the GL_ARB_shader_image_load_store, the + * return result of atomic operations in helper invocations is + * undefined. To avoid a possible infinite loop (below) in a helper + * invocation, bail out now. + */ + if (gl_SampleMaskIn[0] == 0) + return; + + /* Each of 32 * N fragments should see a unique value. Each value + * observed is tracked in "mask." The test automatically fails if a + * duplicate value is observed. After the shaders are done running, + * the mask values will be probed to ensure that all possible values + * were observed. + */ + int64_t f; + + /* This is an open-coded atomicAdd. */ + do { + f = value; + } while (f != atomicCompSwap(value, f, f + (4L << 28))); + + uint i = uint(uint64_t(f) >> 28) / 4u; + uint bit = i % 32u; + int c = int(i / 32u); + uint m = 1u << bit; + + if (c < mask.length()) { + /* If the bit was already set, the test fails. */ + if ((atomicCounterOrARB(mask[c], m) & m) != 0u) + atomicCounterIncrement(fail); + + color = vec4(0.0, 1.0, 0.0, 1.0); + } else { + color = vec4(0.0, 0.0, 1.0, 1.0); + } +} + +[test] +atomic counters 8 + +ssbo 0 32 +ssbo 0 subdata int 0 0 +ssbo 0 subdata int 4 0 + +clear color 0.5 0.5 0.5 0.5 +clear + +draw rect -1 -1 2 2 + +probe atomic counter 0 == 4294967295 +probe atomic counter 1 == 4294967295 +probe atomic counter 2 == 4294967295 +probe atomic counter 3 == 4294967295 +probe atomic counter 4 == 4294967295 +probe atomic counter 5 == 4294967295 +probe atomic counter 6 == 4294967295 +probe atomic counter 7 == 0 |