Mesa (master): i915g: handle seperate stencil clear

[Daniel Vetter]

Module: Mesa
Branch: master
Commit: 530728fb60fc4dd2aa1a2b6eb5de39ec9b17ea35
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=530728fb60fc4dd2aa1a2b6eb5de39ec9b17ea35

Author: Daniel Vetter <daniel.vetter at ffwll.ch>
Date:   Sun Sep 25 18:49:02 2011 +0200

i915g: handle seperate stencil clear

Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch>

---

 src/gallium/drivers/i915/i915_clear.c |   10 ++++++++++
 1 files changed, 10 insertions(+), 0 deletions(-)

diff --git a/src/gallium/drivers/i915/i915_clear.c b/src/gallium/drivers/i915/i915_clear.c
index 8e2541d..69fe2f3 100644
--- a/src/gallium/drivers/i915/i915_clear.c
+++ b/src/gallium/drivers/i915/i915_clear.c
@@ -105,6 +105,16 @@ i915_clear_emit(struct pipe_context *pipe, unsigned buffers,
          clear_depth = (packed_z_stencil & 0xffff) | (packed_z_stencil << 16);
          depth_clear_bbp = 16;
       }
+   } else if (buffers & PIPE_CLEAR_DEPTH) {
+      struct pipe_surface *zbuf = i915->framebuffer.zsbuf;
+
+      clear_params |= CLEARPARAM_WRITE_STENCIL;
+      depth_tex = i915_texture(zbuf->texture);
+      assert(depth_tex->b.b.format == PIPE_FORMAT_Z24_UNORM_S8_USCALED);
+
+      packed_z_stencil = util_pack_z_stencil(depth_tex->b.b.format, depth, stencil);
+      depth_clear_bbp = 32;
+      clear_stencil = packed_z_stencil & 0xff;
    }
 
    /* hw can't fastclear both depth and color if their bbp mismatch. */