diff options
Diffstat (limited to 'src/gallium/docs/source/tgsi.rst')
| -rw-r--r-- | src/gallium/docs/source/tgsi.rst | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/src/gallium/docs/source/tgsi.rst b/src/gallium/docs/source/tgsi.rst index e588c5b7bd..d99ed7c6d6 100644 --- a/src/gallium/docs/source/tgsi.rst +++ b/src/gallium/docs/source/tgsi.rst @@ -678,8 +678,6 @@ This instruction replicates its result. pc = pop() - Potential restrictions: - * Only occurs at end of function. .. opcode:: SSG - Set Sign @@ -726,7 +724,7 @@ This instruction replicates its result. dst.z = 0 - dst.y = 1 + dst.w = 1 .. opcode:: TXB - Texture Lookup With Bias @@ -1417,6 +1415,12 @@ Edge flags are used to control which lines or points are actually drawn when the polygon mode converts triangles/quads/polygons into points or lines. +TGSI_SEMANTIC_STENCIL +"""""""""""""""""""""" + +For fragment shaders, this semantic label indicates than an output +is a writable stencil reference value. Only the Y component is writable. +This allows the fragment shader to change the fragments stencilref value. Properties @@ -1495,6 +1499,8 @@ well. | Z | XXX TBD | (z, z, z, 1) | (0, z, 0, 1) | | | | [#depth-tex-mode]_ | | +--------------------+--------------+--------------------+--------------+ +| S | (s, s, s, s) | unknown | unknown | ++--------------------+--------------+--------------------+--------------+ .. [#envmap-bumpmap] http://www.opengl.org/registry/specs/ATI/envmap_bumpmap.txt .. [#depth-tex-mode] the default is (z, z, z, 1) but may also be (0, 0, 0, z) |