From bb8abc10bf562b0d20e7bd7d52ea566686f1dc09 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Marek=20Ol=C5=A1=C3=A1k?= Date: Mon, 2 Oct 2017 22:28:46 +0200 Subject: [PATCH] tgsi: add docs for some existing pack opcodes MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Reviewed-by: Nicolai Hähnle --- src/gallium/docs/source/tgsi.rst | 24 +++++++++++++++++++++--- 1 file changed, 21 insertions(+), 3 deletions(-) diff --git a/src/gallium/docs/source/tgsi.rst b/src/gallium/docs/source/tgsi.rst index 551e9dd379f..1a51fe987b8 100644 --- a/src/gallium/docs/source/tgsi.rst +++ b/src/gallium/docs/source/tgsi.rst @@ -417,17 +417,35 @@ This instruction replicates its result. .. opcode:: PK2US - Pack Two Unsigned 16-bit Scalars - TBD +This instruction replicates its result. + +.. math:: + + dst = f32\_to\_unorm16(src.x) | f32\_to\_unorm16(src.y) << 16 .. opcode:: PK4B - Pack Four Signed 8-bit Scalars - TBD +This instruction replicates its result. + +.. math:: + + dst = f32\_to\_snorm8(src.x) | + (f32\_to\_snorm8(src.y) << 8) | + (f32\_to\_snorm8(src.z) << 16) | + (f32\_to\_snorm8(src.w) << 24) .. opcode:: PK4UB - Pack Four Unsigned 8-bit Scalars - TBD +This instruction replicates its result. + +.. math:: + + dst = f32\_to\_unorm8(src.x) | + (f32\_to\_unorm8(src.y) << 8) | + (f32\_to\_unorm8(src.z) << 16) | + (f32\_to\_unorm8(src.w) << 24) .. opcode:: SEQ - Set On Equal -- 2.30.2