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a4xx: only disable depth clipping, not all clipping, when requested

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The previous bit disables the whole clipper, including the regular
viewport-related clipping that would go on. The two new bits disable
near and far clipping (separately, as verified with the
depth-clamp-range piglit).

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Cc: mesa-stable@lists.freedesktop.org
This commit is contained in:
Ilia Mirkin 2016-08-18 20:12:29 -04:00
parent 5adee83806
commit cd8e30452f
2 changed files with 4 additions and 1 deletions
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2
src/gallium/drivers/freedreno/a4xx/a4xx.xml.h
View file

@ -3145,6 +3145,8 @@ static inline uint32_t A4XX_TPL1_TP_TEX_COUNT_GS(uint32_t val)
#define REG_A4XX_GRAS_CL_CLIP_CNTL 0x00002000
#define A4XX_GRAS_CL_CLIP_CNTL_CLIP_DISABLE 0x00008000
#define A4XX_GRAS_CL_CLIP_CNTL_ZNEAR_CLIP_DISABLE 0x00010000
#define A4XX_GRAS_CL_CLIP_CNTL_ZFAR_CLIP_DISABLE 0x00020000
#define A4XX_GRAS_CL_CLIP_CNTL_ZERO_GB_SCALE_Z 0x00400000
#define REG_A4XX_GRAS_CLEAR_CNTL 0x00002003

3
src/gallium/drivers/freedreno/a4xx/fd4_rasterizer.c
View file

@ -98,7 +98,8 @@ fd4_rasterizer_state_create(struct pipe_context *pctx,
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;
so->gras_cl_clip_cntl |= A4XX_GRAS_CL_CLIP_CNTL_ZNEAR_CLIP_DISABLE |
A4XX_GRAS_CL_CLIP_CNTL_ZFAR_CLIP_DISABLE;
if (cso->clip_halfz)
so->gras_cl_clip_cntl |= A4XX_GRAS_CL_CLIP_CNTL_ZERO_GB_SCALE_Z;