6 files changed, 10 insertions, 3 deletions
diff --git a/src/gallium/drivers/nouveau/nv50/nv50_3d.xml.h b/src/gallium/drivers/nouveau/nv50/nv50_3d.xml.h
index 7523fdc4580..a2c22c5eaa5 100644
--- a/src/gallium/drivers/nouveau/nv50/nv50_3d.xml.h
+++ b/src/gallium/drivers/nouveau/nv50/nv50_3d.xml.h
@@ -415,7 +415,7 @@ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 #define NV50_3D_VERTEX_BUFFER_COUNT				0x00000d78
 
-#define NV50_3D_UNK0D7C						0x00000d7c
+#define NV50_3D_DEPTH_CLIP_NEGATIVE_Z				0x00000d7c
 
 #define NV50_3D_CLEAR_COLOR(i0)				       (0x00000d80 + 0x4*(i0))
 #define NV50_3D_CLEAR_COLOR__ESIZE				0x00000004
diff --git a/src/gallium/drivers/nouveau/nv50/nv50_screen.c b/src/gallium/drivers/nouveau/nv50/nv50_screen.c
index 825e0ba4997..fcf00982cb8 100644
--- a/src/gallium/drivers/nouveau/nv50/nv50_screen.c
+++ b/src/gallium/drivers/nouveau/nv50/nv50_screen.c
@@ -173,6 +173,7 @@ nv50_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
    case PIPE_CAP_TGSI_FS_FINE_DERIVATIVE:
    case PIPE_CAP_SAMPLER_VIEW_TARGET:
    case PIPE_CAP_CONDITIONAL_RENDER_INVERTED:
+   case PIPE_CAP_CLIP_HALFZ:
       return 1;
    case PIPE_CAP_SEAMLESS_CUBE_MAP:
       return 1; /* class_3d >= NVA0_3D_CLASS; */
@@ -204,7 +205,6 @@ nv50_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
    case PIPE_CAP_TGSI_VS_WINDOW_SPACE_POSITION:
    case PIPE_CAP_COMPUTE:
    case PIPE_CAP_DRAW_INDIRECT:
-   case PIPE_CAP_CLIP_HALFZ:
       return 0;
 
    case PIPE_CAP_VENDOR_ID:
diff --git a/src/gallium/drivers/nouveau/nv50/nv50_state.c b/src/gallium/drivers/nouveau/nv50/nv50_state.c
index cf84f886662..155cdddf845 100644
--- a/src/gallium/drivers/nouveau/nv50/nv50_state.c
+++ b/src/gallium/drivers/nouveau/nv50/nv50_state.c
@@ -333,6 +333,9 @@ nv50_rasterizer_state_create(struct pipe_context *pipe,
    SB_BEGIN_3D(so, VIEW_VOLUME_CLIP_CTRL, 1);
    SB_DATA    (so, reg);
 
+   SB_BEGIN_3D(so, DEPTH_CLIP_NEGATIVE_Z, 1);
+   SB_DATA    (so, cso->clip_halfz);
+
    assert(so->size <= (sizeof(so->state) / sizeof(so->state[0])));
    return (void *)so;
 }
diff --git a/src/gallium/drivers/nouveau/nvc0/nvc0_3d.xml.h b/src/gallium/drivers/nouveau/nvc0/nvc0_3d.xml.h
index 94b447b088f..5bd5e95370f 100644
--- a/src/gallium/drivers/nouveau/nvc0/nvc0_3d.xml.h
+++ b/src/gallium/drivers/nouveau/nvc0/nvc0_3d.xml.h
@@ -318,6 +318,8 @@ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 #define NVC0_3D_VERTEX_BUFFER_COUNT				0x00000d78
 
+#define NVC0_3D_DEPTH_CLIP_NEGATIVE_Z				0x00000d7c
+
 #define NVC0_3D_CLEAR_COLOR(i0)				       (0x00000d80 + 0x4*(i0))
 #define NVC0_3D_CLEAR_COLOR__ESIZE				0x00000004
 #define NVC0_3D_CLEAR_COLOR__LEN				0x00000004
diff --git a/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c b/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c
index 4d4d5eb340a..2a759311bf7 100644
--- a/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c
+++ b/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c
@@ -171,6 +171,7 @@ nvc0_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
    case PIPE_CAP_TGSI_FS_FINE_DERIVATIVE:
    case PIPE_CAP_CONDITIONAL_RENDER_INVERTED:
    case PIPE_CAP_SAMPLER_VIEW_TARGET:
+   case PIPE_CAP_CLIP_HALFZ:
       return 1;
    case PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE:
       return (class_3d >= NVE4_3D_CLASS) ? 1 : 0;
@@ -188,7 +189,6 @@ nvc0_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
    case PIPE_CAP_TGSI_VS_LAYER_VIEWPORT:
    case PIPE_CAP_FAKE_SW_MSAA:
    case PIPE_CAP_TGSI_VS_WINDOW_SPACE_POSITION:
-   case PIPE_CAP_CLIP_HALFZ:
       return 0;
 
    case PIPE_CAP_VENDOR_ID:
diff --git a/src/gallium/drivers/nouveau/nvc0/nvc0_state.c b/src/gallium/drivers/nouveau/nvc0/nvc0_state.c
index d1a7cf51559..54deb20cb0c 100644
--- a/src/gallium/drivers/nouveau/nvc0/nvc0_state.c
+++ b/src/gallium/drivers/nouveau/nvc0/nvc0_state.c
@@ -313,6 +313,8 @@ nvc0_rasterizer_state_create(struct pipe_context *pipe,
     SB_BEGIN_3D(so, VIEW_VOLUME_CLIP_CTRL, 1);
     SB_DATA    (so, reg);
 
+    SB_IMMED_3D(so, DEPTH_CLIP_NEGATIVE_Z, cso->clip_halfz);
+
     assert(so->size <= (sizeof(so->state) / sizeof(so->state[0])));
     return (void *)so;
 }