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swscale/vulkan: implement SWS_OP_PACK/SWS_OP_UNPACK

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The issue is that while Vulkan already does the decomposition for us,
swscale assumes that the pixels will be in bitstream order, rather than
in their decomposed form.
This is valid for all packed formats for which these instructions are
issued (XV30 and X2RGB10).
This allows us to support the formats in Vulkan.

Sponsored-by: Sovereign Tech Fund
This commit is contained in:
Lynne
2026-05-12 22:26:11 +09:00
parent 5f2877b532
commit 489a3834d2
1 changed files with 22 additions and 0 deletions
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libswscale/vulkan/ops.c
+22
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@@ -875,6 +875,18 @@ static int add_ops_spirv(VulkanPriv *p, FFVulkanOpsCtx *s,
nb_linear_ops++;
break;
}
case SWS_OP_UNPACK:
if (ops->src.format == AV_PIX_FMT_X2BGR10)
data = spi_OpVectorShuffle(spi, type_v, data, data, 3, 2, 1, 0);
else
data = spi_OpVectorShuffle(spi, type_v, data, data, 3, 0, 1, 2);
break;
case SWS_OP_PACK:
if (ops->dst.format == AV_PIX_FMT_X2BGR10)
data = spi_OpVectorShuffle(spi, type_v, data, data, 3, 2, 1, 0);
else
data = spi_OpVectorShuffle(spi, type_v, data, data, 1, 2, 3, 0);
break;
default:
return AVERROR(ENOTSUP);
}
@@ -1105,6 +1117,16 @@ static int add_ops_glsl(VulkanPriv *p, FFVulkanOpsCtx *s,
}
av_bprintf(&shd->src, " f32 = tmp;\n");
break;
case SWS_OP_UNPACK:
/* MSB->LSB indexing */
av_bprintf(&shd->src, " %s = %s.%s;\n", type_name, type_name,
ops->src.format == AV_PIX_FMT_X2BGR10 ? "wzyx" : "wxyz");
break;
case SWS_OP_PACK:
/* LSB->MSB indexing */
av_bprintf(&shd->src, " %s = %s.%s;\n", type_name, type_name,
ops->dst.format == AV_PIX_FMT_X2BGR10 ? "wzyx" : "yzwx");
break;
default:
return AVERROR(ENOTSUP);
}