xref: /aosp_15_r20/external/skia/src/sksl/sksl_compute.sksl (revision c8dee2aa9b3f27cf6c858bd81872bdeb2c07ed17)

// defines built-in interfaces supported by SkSL compute shaders

layout(builtin=24) in uint3 sk_NumWorkgroups;
layout(builtin=26) in uint3 sk_WorkgroupID;
layout(builtin=27) in uint3 sk_LocalInvocationID;
layout(builtin=28) in uint3 sk_GlobalInvocationID;
layout(builtin=29) in uint sk_LocalInvocationIndex;

struct IndirectDispatchArgs {
    int x, y, z;
};

$pure half4 textureRead($readableTexture2D t, uint2 pos);
void textureWrite($writableTexture2D t, uint2 pos, half4 color);

$pure uint textureWidth($genTexture2D t);
$pure uint textureHeight($genTexture2D t);

// Control-barrier with memory-ordering constraints applied to
// workgroup shared memory only.
void workgroupBarrier();

// Control-barrier with memory-ordering constraints applied to
// uniform and storage-buffer memory.
void storageBarrier();