dawn-cmake/test/tint/builtins/gen/countTrailingZeros/1ad138.wgsl.expected.glsl
Ben Clayton f8672d8c35 builtins: Add countTrailingZeros
Requires polyfilling for all but the MSL backend.

CTS tests: https://github.com/gpuweb/cts/pull/1002

Bug: tint:1367
Change-Id: I0cf56b74c01f30436f9ad00595a554a4042587e4
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/81501
Reviewed-by: David Neto <dneto@google.com>
Commit-Queue: Ben Clayton <bclayton@google.com>
Kokoro: Ben Clayton <bclayton@google.com>
2022-02-22 23:16:39 +00:00

94 lines
2.6 KiB
GLSL

#version 310 es
uvec2 tint_count_trailing_zeros(uvec2 v) {
uvec2 x = uvec2(v);
uvec2 b16 = mix(uvec2(16u), uvec2(0u), bvec2((x & uvec2(65535u))));
x = (x >> b16);
uvec2 b8 = mix(uvec2(8u), uvec2(0u), bvec2((x & uvec2(255u))));
x = (x >> b8);
uvec2 b4 = mix(uvec2(4u), uvec2(0u), bvec2((x & uvec2(15u))));
x = (x >> b4);
uvec2 b2 = mix(uvec2(2u), uvec2(0u), bvec2((x & uvec2(3u))));
x = (x >> b2);
uvec2 b1 = mix(uvec2(1u), uvec2(0u), bvec2((x & uvec2(1u))));
uvec2 is_zero = mix(uvec2(0u), uvec2(1u), equal(x, uvec2(0u)));
return uvec2((((((b16 | b8) | b4) | b2) | b1) + is_zero));
}
void countTrailingZeros_1ad138() {
uvec2 res = tint_count_trailing_zeros(uvec2(0u, 0u));
}
vec4 vertex_main() {
countTrailingZeros_1ad138();
return vec4(0.0f, 0.0f, 0.0f, 0.0f);
}
void main() {
vec4 inner_result = vertex_main();
gl_Position = inner_result;
gl_Position.y = -(gl_Position.y);
gl_Position.z = ((2.0f * gl_Position.z) - gl_Position.w);
return;
}
#version 310 es
precision mediump float;
uvec2 tint_count_trailing_zeros(uvec2 v) {
uvec2 x = uvec2(v);
uvec2 b16 = mix(uvec2(16u), uvec2(0u), bvec2((x & uvec2(65535u))));
x = (x >> b16);
uvec2 b8 = mix(uvec2(8u), uvec2(0u), bvec2((x & uvec2(255u))));
x = (x >> b8);
uvec2 b4 = mix(uvec2(4u), uvec2(0u), bvec2((x & uvec2(15u))));
x = (x >> b4);
uvec2 b2 = mix(uvec2(2u), uvec2(0u), bvec2((x & uvec2(3u))));
x = (x >> b2);
uvec2 b1 = mix(uvec2(1u), uvec2(0u), bvec2((x & uvec2(1u))));
uvec2 is_zero = mix(uvec2(0u), uvec2(1u), equal(x, uvec2(0u)));
return uvec2((((((b16 | b8) | b4) | b2) | b1) + is_zero));
}
void countTrailingZeros_1ad138() {
uvec2 res = tint_count_trailing_zeros(uvec2(0u, 0u));
}
void fragment_main() {
countTrailingZeros_1ad138();
}
void main() {
fragment_main();
return;
}
#version 310 es
uvec2 tint_count_trailing_zeros(uvec2 v) {
uvec2 x = uvec2(v);
uvec2 b16 = mix(uvec2(16u), uvec2(0u), bvec2((x & uvec2(65535u))));
x = (x >> b16);
uvec2 b8 = mix(uvec2(8u), uvec2(0u), bvec2((x & uvec2(255u))));
x = (x >> b8);
uvec2 b4 = mix(uvec2(4u), uvec2(0u), bvec2((x & uvec2(15u))));
x = (x >> b4);
uvec2 b2 = mix(uvec2(2u), uvec2(0u), bvec2((x & uvec2(3u))));
x = (x >> b2);
uvec2 b1 = mix(uvec2(1u), uvec2(0u), bvec2((x & uvec2(1u))));
uvec2 is_zero = mix(uvec2(0u), uvec2(1u), equal(x, uvec2(0u)));
return uvec2((((((b16 | b8) | b4) | b2) | b1) + is_zero));
}
void countTrailingZeros_1ad138() {
uvec2 res = tint_count_trailing_zeros(uvec2(0u, 0u));
}
void compute_main() {
countTrailingZeros_1ad138();
}
layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in;
void main() {
compute_main();
return;
}