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| author | Maciej Cencora <m.cencora@gmail.com> | 2010-03-21 11:34:19 +0100 |
|---|---|---|
| committer | Maciej Cencora <m.cencora@gmail.com> | 2010-03-24 20:07:44 +0100 |
| commit | bed7d88708eba69118fe3805f95b104194872f3a (patch) | |
| tree | 41a56668f6e1ce96d0bc3229b6dc2ed473081e1b /src/mesa | |
| parent | 70929f4505d5cb1b9848a02e8359e9f7a8ef598c (diff) | |
r300: fix wpos/fog handling
It may happen that the vertex attribute we were going to stuff
the wpos/fog attrs in was already written by vertex program.
In such cases we need to remove instruction accessing these
attributes, so they don't overwrite the wpos/fog related
instructions.
This fixes non-textured models in many wine games.
Diffstat (limited to 'src/mesa')
| -rw-r--r-- | src/mesa/drivers/dri/r300/r300_vertprog.c | 22 |
1 files changed, 16 insertions, 6 deletions
diff --git a/src/mesa/drivers/dri/r300/r300_vertprog.c b/src/mesa/drivers/dri/r300/r300_vertprog.c index 129004fee7..e77cd611f7 100644 --- a/src/mesa/drivers/dri/r300/r300_vertprog.c +++ b/src/mesa/drivers/dri/r300/r300_vertprog.c @@ -263,15 +263,25 @@ static struct r300_vertex_program *build_program(GLcontext *ctx, rc_move_output(&compiler.Base, VERT_RESULT_PSIZ, VERT_RESULT_PSIZ, WRITEMASK_X); if (vp->key.WPosAttr != FRAG_ATTRIB_MAX) { - rc_copy_output(&compiler.Base, - VERT_RESULT_HPOS, - vp->key.WPosAttr - FRAG_ATTRIB_TEX0 + VERT_RESULT_TEX0); + unsigned int vp_wpos_attr = vp->key.WPosAttr - FRAG_ATTRIB_TEX0 + VERT_RESULT_TEX0; + + /* Set empty writemask for instructions writing to vp_wpos_attr + * before moving the wpos attr there. + * Such instructions will be removed by DCE. + */ + rc_move_output(&compiler.Base, vp_wpos_attr, vp->key.WPosAttr, 0); + rc_copy_output(&compiler.Base, VERT_RESULT_HPOS, vp_wpos_attr); } if (vp->key.FogAttr != FRAG_ATTRIB_MAX) { - rc_move_output(&compiler.Base, - VERT_RESULT_FOGC, - vp->key.FogAttr - FRAG_ATTRIB_TEX0 + VERT_RESULT_TEX0, WRITEMASK_X); + unsigned int vp_fog_attr = vp->key.FogAttr - FRAG_ATTRIB_TEX0 + VERT_RESULT_TEX0; + + /* Set empty writemask for instructions writing to vp_fog_attr + * before moving the fog attr there. + * Such instructions will be removed by DCE. + */ + rc_move_output(&compiler.Base, vp_fog_attr, vp->key.FogAttr, 0); + rc_move_output(&compiler.Base, VERT_RESULT_FOGC, vp_fog_attr, WRITEMASK_X); } r3xx_compile_vertex_program(&compiler); |