128 lines
2.6 KiB
Plaintext
128 lines
2.6 KiB
Plaintext
#!amber
|
|
|
|
SHADER vertex vert_shader PASSTHROUGH
|
|
|
|
SHADER fragment frag_shader GLSL TARGET_ENV spv1.3
|
|
#version 450
|
|
|
|
#extension GL_EXT_maximal_reconvergence : require
|
|
#extension GL_KHR_shader_subgroup_ballot : require
|
|
#extension GL_EXT_demote_to_helper_invocation : require
|
|
|
|
layout(binding = 0) readonly buffer X { uvec4 fragments; };
|
|
layout(binding = 1) buffer Y { uint result; };
|
|
layout(location = 0) out vec4 dEQP_FragColor;
|
|
|
|
void main()
|
|
[[maximally_reconverges]]
|
|
{
|
|
const uvec4 fullBallot = subgroupBallot( ! helperInvocationEXT() );
|
|
const uint fragmentID = uint(gl_FragCoord.y) * 16 + uint(gl_FragCoord.x);
|
|
const uvec4 quadBallot = subgroupBallot((fragments[gl_SubgroupInvocationID % 4] - fragmentID) == 0);
|
|
const bool quadSubgroup = subgroupBallotBitCount(quadBallot) == 1;
|
|
|
|
if (quadSubgroup && subgroupInverseBallot(quadBallot))
|
|
{
|
|
switch (gl_SubgroupInvocationID % 4)
|
|
{
|
|
case 0:
|
|
{
|
|
while (true)
|
|
{
|
|
subgroupMemoryBarrier();
|
|
if (subgroupElect())
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
demote;
|
|
}
|
|
break;
|
|
case 1:
|
|
{
|
|
do
|
|
{
|
|
subgroupMemoryBarrierBuffer();
|
|
if (subgroupElect())
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
while (quadSubgroup);
|
|
demote;
|
|
}
|
|
break;
|
|
case 2:
|
|
{
|
|
while (quadSubgroup)
|
|
{
|
|
subgroupMemoryBarrierBuffer();
|
|
if (subgroupElect())
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
demote;
|
|
}
|
|
break;
|
|
case 3:
|
|
{
|
|
for (;;)
|
|
{
|
|
subgroupMemoryBarrier();
|
|
if (subgroupElect())
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
demote;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
const uvec4 nonHelperBallot = subgroupBallot( ! helperInvocationEXT() );
|
|
const uvec4 demotedBallot = nonHelperBallot ^ fullBallot;
|
|
const uint writeInvocation = subgroupBallotFindLSB(nonHelperBallot);
|
|
|
|
if (quadSubgroup && gl_SubgroupInvocationID == writeInvocation)
|
|
{
|
|
result = (demotedBallot == quadBallot) ? 1 : 0;
|
|
}
|
|
|
|
dEQP_FragColor = vec4(1.0);
|
|
}
|
|
END
|
|
|
|
BUFFER vertices DATA_TYPE R32G32_SFLOAT DATA
|
|
-1.0 3.5 -1.0 -1.0 3.5 -1.0
|
|
END
|
|
|
|
BUFFER fragments DATA_TYPE R32G32B32A32_UINT DATA
|
|
256 256 256 51
|
|
END
|
|
|
|
BUFFER result DATA_TYPE R32_UINT DATA 99 END
|
|
|
|
BUFFER framebuffer FORMAT R32G32B32A32_SFLOAT
|
|
|
|
PIPELINE graphics mainPipeline
|
|
ATTACH vert_shader
|
|
ATTACH frag_shader
|
|
|
|
FRAMEBUFFER_SIZE 16 16
|
|
|
|
BIND BUFFER fragments AS storage DESCRIPTOR_SET 0 BINDING 0
|
|
BIND BUFFER result AS storage DESCRIPTOR_SET 0 BINDING 1
|
|
VERTEX_DATA vertices LOCATION 0
|
|
BIND BUFFER framebuffer AS color LOCATION 0
|
|
END
|
|
|
|
CLEAR_COLOR mainPipeline 0 0 0 0
|
|
CLEAR mainPipeline
|
|
|
|
RUN mainPipeline DRAW_ARRAY AS TRIANGLE_LIST START_IDX 0 COUNT 3
|
|
|
|
EXPECT result IDX 0 EQ 1
|
|
|