Mesa (master): i965/gen6: Add CC viewport state setup to blorp code.

[Eric Anholt]

Module: Mesa
Branch: master
Commit: 5b248e598293e7c21257d35904294da4c8f2da58
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=5b248e598293e7c21257d35904294da4c8f2da58

Author: Eric Anholt <eric at anholt.net>
Date:   Wed May 23 09:51:33 2012 -0700

i965/gen6: Add CC viewport state setup to blorp code.

While it doesn't have the same warning in the simulator as in gen7,
let's emit it out of paranoia.  We wouldn't want our resolves of some
previous clear to get clamped to some current clamping value.

Suggested-by: pretty much everyone

---

 src/mesa/drivers/dri/i965/gen6_blorp.cpp |   26 ++++++++++++++++++++++++++
 1 files changed, 26 insertions(+), 0 deletions(-)

diff --git a/src/mesa/drivers/dri/i965/gen6_blorp.cpp b/src/mesa/drivers/dri/i965/gen6_blorp.cpp
index 7b3bdf3..11bd72e 100644
--- a/src/mesa/drivers/dri/i965/gen6_blorp.cpp
+++ b/src/mesa/drivers/dri/i965/gen6_blorp.cpp
@@ -961,6 +961,31 @@ gen6_blorp_emit_drawing_rectangle(struct brw_context *brw,
    ADVANCE_BATCH();
 }
 
+/* 3DSTATE_VIEWPORT_STATE_POINTERS */
+void
+gen6_blorp_emit_viewport_state(struct brw_context *brw,
+			       const brw_blorp_params *params)
+{
+   struct intel_context *intel = &brw->intel;
+   struct brw_cc_viewport *ccv;
+   uint32_t cc_vp_offset;
+
+   ccv = (struct brw_cc_viewport *)brw_state_batch(brw, AUB_TRACE_CC_VP_STATE,
+						   sizeof(*ccv), 32,
+						   &cc_vp_offset);
+
+   ccv->min_depth = 0.0;
+   ccv->max_depth = 1.0;
+
+   BEGIN_BATCH(4);
+   OUT_BATCH(_3DSTATE_VIEWPORT_STATE_POINTERS << 16 | (4 - 2) |
+	     GEN6_CC_VIEWPORT_MODIFY);
+   OUT_BATCH(0); /* clip VP */
+   OUT_BATCH(0); /* SF VP */
+   OUT_BATCH(cc_vp_offset);
+   ADVANCE_BATCH();
+}
+
 
 /* 3DPRIMITIVE */
 static void
@@ -1043,6 +1068,7 @@ gen6_blorp_exec(struct intel_context *intel,
    gen6_blorp_emit_wm_config(brw, params, prog_offset, prog_data);
    if (params->use_wm_prog)
       gen6_blorp_emit_binding_table_pointers(brw, params, wm_bind_bo_offset);
+   gen6_blorp_emit_viewport_state(brw, params);
 
    if (params->depth.mt)
       gen6_blorp_emit_depth_stencil_config(brw, params);