diff options
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_wm_emit.c | 27 |
1 files changed, 25 insertions, 2 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_wm_emit.c b/src/mesa/drivers/dri/i965/brw_wm_emit.c index f01fffbd5c8..f2ace7d13d6 100644 --- a/src/mesa/drivers/dri/i965/brw_wm_emit.c +++ b/src/mesa/drivers/dri/i965/brw_wm_emit.c @@ -1294,6 +1294,7 @@ void emit_fb_write(struct brw_wm_compile *c, { struct brw_compile *p = &c->func; struct brw_context *brw = p->brw; + struct intel_context *intel = &brw->intel; GLuint nr = 2; GLuint channel; @@ -1308,8 +1309,30 @@ void emit_fb_write(struct brw_wm_compile *c, brw_push_insn_state(p); for (channel = 0; channel < 4; channel++) { - if (c->dispatch_width == 16 && brw->has_compr4) { - /* By setting the high bit of the MRF register number, we indicate + if (intel->gen >= 6) { + /* gen6 SIMD16 single source DP write looks like: + * m + 0: r0 + * m + 1: r1 + * m + 2: g0 + * m + 3: g1 + * m + 4: b0 + * m + 5: b1 + * m + 6: a0 + * m + 7: a1 + */ + brw_MOV(p, brw_message_reg(nr + channel * 2), arg0[channel]); + } else if (c->dispatch_width == 16 && brw->has_compr4) { + /* pre-gen6 SIMD16 single source DP write looks like: + * m + 0: r0 + * m + 1: g0 + * m + 2: b0 + * m + 3: a0 + * m + 4: r1 + * m + 5: g1 + * m + 6: b1 + * m + 7: a1 + * + * By setting the high bit of the MRF register number, we indicate * that we want COMPR4 mode - instead of doing the usual destination * + 1 for the second half we get destination + 4. */ |