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authorMichal Krol <michal@vmware.com>2010-02-03 15:45:32 +0100
committerMichal Krol <michal@vmware.com>2010-02-09 15:29:52 +0100
commit63d60979109fc715fbfb293ce0f831e792f45549 (patch)
tree49bff36b81d21c484916ae7fd21934bb526f74f5 /src/gallium/docs/source/tgsi.rst
parente04c8ecc61dfe05d0e17cbffd2f758b0861083bd (diff)
docs: Document TGSI Declaration token.
Diffstat (limited to 'src/gallium/docs/source/tgsi.rst')
-rw-r--r--src/gallium/docs/source/tgsi.rst28
1 files changed, 28 insertions, 0 deletions
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
^^^^^^^^^^^^^^^^^^^^^^^^