diff options
Diffstat (limited to 'src/mesa/pipe/softpipe/sp_state_derived.c')
| -rw-r--r-- | src/mesa/pipe/softpipe/sp_state_derived.c | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/src/mesa/pipe/softpipe/sp_state_derived.c b/src/mesa/pipe/softpipe/sp_state_derived.c index a470cc256e..84a1ec79f8 100644 --- a/src/mesa/pipe/softpipe/sp_state_derived.c +++ b/src/mesa/pipe/softpipe/sp_state_derived.c @@ -75,6 +75,24 @@ static void calculate_vertex_layout( struct softpipe_context *softpipe ) GLbitfield attr_mask = 0x0; GLuint i; + /* Need Z if depth test is enabled or the fragment program uses the + * fragment position (XYZW). + */ + if (softpipe->depth_test.enabled || + (inputsRead & FRAG_ATTRIB_WPOS)) + softpipe->need_z = GL_TRUE; + else + softpipe->need_z = GL_FALSE; + + /* Need W if we do any perspective-corrected interpolation or the + * fragment program uses the fragment position. + */ + if (inputsRead & FRAG_ATTRIB_WPOS) + softpipe->need_w = GL_TRUE; + else + softpipe->need_w = GL_FALSE; + + softpipe->nr_attrs = 0; memset(slot_to_vf_attr, 0, sizeof(slot_to_vf_attr)); @@ -101,7 +119,8 @@ static void calculate_vertex_layout( struct softpipe_context *softpipe ) for (i = FRAG_ATTRIB_TEX0; i < FRAG_ATTRIB_MAX; i++) { if (inputsRead & (1 << i)) { - EMIT_ATTR(frag_to_vf[i], i, INTERP_PERSPECTIVE); + EMIT_ATTR(frag_to_vf[i], i, INTERP_PERSPECTIVE); + softpipe->need_w = GL_TRUE; } } |