From 63d60979109fc715fbfb293ce0f831e792f45549 Mon Sep 17 00:00:00 2001 From: Michal Krol Date: Wed, 3 Feb 2010 15:45:32 +0100 Subject: docs: Document TGSI Declaration token. --- src/gallium/docs/source/tgsi.rst | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) (limited to 'src/gallium/docs/source/tgsi.rst') diff --git a/src/gallium/docs/source/tgsi.rst b/src/gallium/docs/source/tgsi.rst index 5478d86667..fc5482d384 100644 --- a/src/gallium/docs/source/tgsi.rst +++ b/src/gallium/docs/source/tgsi.rst @@ -1280,6 +1280,34 @@ Other tokens --------------- +Declaration +^^^^^^^^^^^ + + +Declares a register that is will be referenced as an operand in Instruction +tokens. + +File field contains register file that is being declared and is one +of TGSI_FILE. + +UsageMask field specifies which of the register components can be accessed +and is one of TGSI_WRITEMASK. + +Interpolate field is only valid for fragment shader INPUT register files. +It specifes the way input is being interpolated by the rasteriser and is one +of TGSI_INTERPOLATE. + +If Dimension flag is set to 1, a Declaration Dimension token follows. + +If Semantic flag is set to 1, a Declaration Semantic token follows. + +CylindricalWrap bitfield is only valid for fragment shader INPUT register +files. It specifies which register components should be subject to cylindrical +wrapping when interpolating by the rasteriser. If TGSI_CYLINDRICAL_WRAP_X +is set to 1, the X component should be interpolated according to cylindrical +wrapping rules. + + Declaration Semantic ^^^^^^^^^^^^^^^^^^^^^^^^ -- cgit v1.2.3