nv50,nvc0: use clip_halfz setting when creating rasterizer state

This enables the ARB_clip_control extension.

Signed-off-by: Ilia Mirkin <[email protected]>
Cc: "10.4" <[email protected]>

8 files changed, 12 insertions, 5 deletions

diff --git a/docs/GL3.txt b/docs/GL3.txt
index 28544312945..cfbce92bd92 100644
--- a/docs/GL3.txt
+++ b/docs/GL3.txt
@@ -187,7 +187,7 @@ GL 4.4, GLSL 4.40:
 GL 4.5, GLSL 4.50:
 
   GL_ARB_ES3_1_compatibility                           not started
-  GL_ARB_clip_control                                  DONE (llvmpipe, softpipe, r300, r600, radeonsi)
+  GL_ARB_clip_control                                  DONE (nv50, nvc0, r300, r600, radeonsi, llvmpipe, softpipe)
   GL_ARB_conditional_render_inverted                   DONE (i965, nv50, nvc0, llvmpipe, softpipe)
   GL_ARB_cull_distance                                 not started
   GL_ARB_derivative_control                            DONE (i965, nv50, nvc0, r600)
diff --git a/docs/relnotes/10.4.html b/docs/relnotes/10.4.html
index d0fbd3bd1ac..8682d719618 100644
--- a/docs/relnotes/10.4.html
+++ b/docs/relnotes/10.4.html
@@ -47,7 +47,7 @@ Note: some of the new features are only available with certain drivers.
 <li>GL_ARB_conditional_render_inverted on nv50</li>
 <li>GL_ARB_sample_shading on r600</li>
 <li>GL_ARB_texture_view on nv50, nvc0</li>
-<li>GL_ARB_clip_control on llvmpipe, softpipe, r300, r600, radeonsi</li>
+<li>GL_ARB_clip_control on nv50, nvc0, r300, r600, radeonsi, llvmpipe, softpipe</li>
 <li>GL_KHR_context_flush_control on all drivers</li>
 </ul>
 
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;
 }