[Freedreno] [PATCH] freedreno/a4xx: add depth clamp and halfz clip

[Ilia Mirkin]

Signed-off-by: Ilia Mirkin <imirkin at alum.mit.edu>
---
 src/gallium/drivers/freedreno/a4xx/a4xx.xml.h       | 2 ++
 src/gallium/drivers/freedreno/a4xx/fd4_rasterizer.c | 5 +++++
 src/gallium/drivers/freedreno/freedreno_screen.c    | 6 ++----
 3 files changed, 9 insertions(+), 4 deletions(-)

diff --git a/src/gallium/drivers/freedreno/a4xx/a4xx.xml.h b/src/gallium/drivers/freedreno/a4xx/a4xx.xml.h
index ec002f6..ef4f53f 100644
--- a/src/gallium/drivers/freedreno/a4xx/a4xx.xml.h
+++ b/src/gallium/drivers/freedreno/a4xx/a4xx.xml.h
@@ -2059,6 +2059,8 @@ static inline uint32_t A4XX_TPL1_TP_TEX_COUNT_GS(uint32_t val)
 #define REG_A4XX_GRAS_PERFCTR_TSE_SEL_3				0x00000c8b
 
 #define REG_A4XX_GRAS_CL_CLIP_CNTL				0x00002000
+#define A4XX_GRAS_CL_CLIP_CNTL_CLIP_DISABLE			0x00008000
+#define A4XX_GRAS_CL_CLIP_CNTL_ZERO_GB_SCALE_Z			0x00400000
 
 #define REG_A4XX_GRAS_CLEAR_CNTL				0x00002003
 #define A4XX_GRAS_CLEAR_CNTL_NOT_FASTCLEAR			0x00000001
diff --git a/src/gallium/drivers/freedreno/a4xx/fd4_rasterizer.c b/src/gallium/drivers/freedreno/a4xx/fd4_rasterizer.c
index dc7e98b..d894b6b 100644
--- a/src/gallium/drivers/freedreno/a4xx/fd4_rasterizer.c
+++ b/src/gallium/drivers/freedreno/a4xx/fd4_rasterizer.c
@@ -90,5 +90,10 @@ fd4_rasterizer_state_create(struct pipe_context *pctx,
 	if (cso->offset_tri)
 		so->gras_su_mode_control |= A4XX_GRAS_SU_MODE_CONTROL_POLY_OFFSET;
 
+	if (!cso->depth_clip)
+		so->gras_cl_clip_cntl |= A4XX_GRAS_CL_CLIP_CNTL_CLIP_DISABLE;
+	if (cso->clip_halfz)
+		so->gras_cl_clip_cntl |= A4XX_GRAS_CL_CLIP_CNTL_ZERO_GB_SCALE_Z;
+
 	return so;
 }
diff --git a/src/gallium/drivers/freedreno/freedreno_screen.c b/src/gallium/drivers/freedreno/freedreno_screen.c
index 40e4076..38f8712 100644
--- a/src/gallium/drivers/freedreno/freedreno_screen.c
+++ b/src/gallium/drivers/freedreno/freedreno_screen.c
@@ -179,6 +179,8 @@ fd_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
 	case PIPE_CAP_CONDITIONAL_RENDER_INVERTED:
 	case PIPE_CAP_FAKE_SW_MSAA:
 	case PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE:
+	case PIPE_CAP_DEPTH_CLIP_DISABLE:
+	case PIPE_CAP_CLIP_HALFZ:
 		return is_a3xx(screen) || is_a4xx(screen);
 
 	case PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT:
@@ -188,10 +190,6 @@ fd_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
 		if (is_a4xx(screen)) return 8192; /* TODO: Convert to 2D approach */
 		return 0;
 
-	case PIPE_CAP_DEPTH_CLIP_DISABLE:
-	case PIPE_CAP_CLIP_HALFZ:
-		return is_a3xx(screen);
-
 	case PIPE_CAP_TEXTURE_FLOAT_LINEAR:
 	case PIPE_CAP_CUBE_MAP_ARRAY:
 		return is_a4xx(screen);
-- 
2.4.10