Mesa (gallium-0.2): nv50: shadow mapping

[Ben Skeggs]

Module: Mesa
Branch: gallium-0.2
Commit: 68bb26b62d87ae6737ba51a4bffda49eeb7647cb
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=68bb26b62d87ae6737ba51a4bffda49eeb7647cb

Author: Ben Skeggs <skeggsb at gmail.com>
Date:   Tue Jan 13 10:58:17 2009 +1000

nv50: shadow mapping

---

 src/gallium/drivers/nv50/nv50_screen.c |    2 +-
 src/gallium/drivers/nv50/nv50_state.c  |    5 +++++
 2 files changed, 6 insertions(+), 1 deletions(-)

diff --git a/src/gallium/drivers/nv50/nv50_screen.c b/src/gallium/drivers/nv50/nv50_screen.c
index 381b3e2..8e084e6 100644
--- a/src/gallium/drivers/nv50/nv50_screen.c
+++ b/src/gallium/drivers/nv50/nv50_screen.c
@@ -106,7 +106,7 @@ nv50_screen_get_param(struct pipe_screen *pscreen, int param)
 	case PIPE_CAP_OCCLUSION_QUERY:
 		return 1;
 	case PIPE_CAP_TEXTURE_SHADOW_MAP:
-		return 0;
+		return 1;
 	case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 		return 13;
 	case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
diff --git a/src/gallium/drivers/nv50/nv50_state.c b/src/gallium/drivers/nv50/nv50_state.c
index cabe54b..38c1d93 100644
--- a/src/gallium/drivers/nv50/nv50_state.c
+++ b/src/gallium/drivers/nv50/nv50_state.c
@@ -196,6 +196,11 @@ nv50_sampler_state_create(struct pipe_context *pipe,
 	if (cso->max_anisotropy >= 2.0)
 		tsc[0] |= (1 << 20);
 
+	if (cso->compare_mode == PIPE_TEX_COMPARE_R_TO_TEXTURE) {
+		tsc[0] |= (1 << 8);
+		tsc[0] |= (nvgl_comparison_op(cso->compare_func) & 0x7);
+	}
+
 	return (void *)tsc;
 }