Module: Mesa Branch: 7.8 Commit: bed7d88708eba69118fe3805f95b104194872f3a URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=bed7d88708eba69118fe3805f95b104194872f3a
Author: Maciej Cencora <[email protected]> Date: Sun Mar 21 11:34:19 2010 +0100 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. --- 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 129004f..e77cd61 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); _______________________________________________ mesa-commit mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/mesa-commit
