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vulkan/ffv1_dec: synchronize image writes when decoding

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This commit is contained in:
Lynne
2026-02-13 13:17:38 +01:00
parent fb7700636c
commit e9645930dd
1 changed files with 9 additions and 10 deletions
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19
libavcodec/vulkan/ffv1_dec.comp.glsl
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@@ -127,23 +127,22 @@ void decode_line(ivec2 sp, int w,
rc_dec[gl_LocalInvocationID.x] = false;
barrier();
int diff;
if (gl_LocalInvocationID.x == 0)
diff = get_isymbol();
barrier();
uint i = gl_LocalInvocationID.x;
if (rc_dec[i])
slice_rc_state[rc_off] = zero_one_state[rc_state[i] +
(rc_data[i] ? 256 : 0)];
if (gl_LocalInvocationID.x == 0) {
int diff = get_isymbol();
if (pr[0] < 0)
diff = -diff;
uint v = zero_extend(pr[1] + diff, bits);
imageStore(dec[p], sp + LADDR(ivec2(x, y)), uvec4(v));
}
/* Image write now visible to other invocs */
memoryBarrierImage();
barrier();
if (rc_dec[gl_LocalInvocationID.x])
slice_rc_state[rc_off] =
zero_one_state[rc_state[gl_LocalInvocationID.x] +
(rc_data[gl_LocalInvocationID.x] ? 256 : 0)];
}
}