diff options
| author | Marek Olšák <[email protected]> | 2010-07-21 20:31:39 +0200 |
|---|---|---|
| committer | Marek Olšák <[email protected]> | 2010-07-21 22:54:34 +0200 |
| commit | 9ca48de1068d4ebce81853d29455c83b4898e25e (patch) | |
| tree | b4aba8b55759b2350403de85fbcbf0f362d8c430 | |
| parent | c304869ec02793f2d8bf363d1e3b37c3d121cca7 (diff) | |
draw: disable depth clipping if depth clamp is enabled
| -rw-r--r-- | src/gallium/auxiliary/draw/draw_context.c | 1 | ||||
| -rw-r--r-- | src/gallium/auxiliary/draw/draw_private.h | 1 | ||||
| -rw-r--r-- | src/gallium/auxiliary/draw/draw_pt_post_vs.c | 13 |
3 files changed, 11 insertions, 4 deletions
diff --git a/src/gallium/auxiliary/draw/draw_context.c b/src/gallium/auxiliary/draw/draw_context.c index aac1ed602c7..c127f741881 100644 --- a/src/gallium/auxiliary/draw/draw_context.c +++ b/src/gallium/auxiliary/draw/draw_context.c @@ -216,6 +216,7 @@ void draw_set_clip_state( struct draw_context *draw, assert(clip->nr <= PIPE_MAX_CLIP_PLANES); memcpy(&draw->plane[6], clip->ucp, clip->nr * sizeof(clip->ucp[0])); draw->nr_planes = 6 + clip->nr; + draw->depth_clamp = clip->depth_clamp; } diff --git a/src/gallium/auxiliary/draw/draw_private.h b/src/gallium/auxiliary/draw/draw_private.h index 8af885908e3..058aeedc17a 100644 --- a/src/gallium/auxiliary/draw/draw_private.h +++ b/src/gallium/auxiliary/draw/draw_private.h @@ -249,6 +249,7 @@ struct draw_context */ float plane[12][4]; unsigned nr_planes; + boolean depth_clamp; /* If a prim stage introduces new vertex attributes, they'll be stored here */ diff --git a/src/gallium/auxiliary/draw/draw_pt_post_vs.c b/src/gallium/auxiliary/draw/draw_pt_post_vs.c index e850cc2edd6..308f927b778 100644 --- a/src/gallium/auxiliary/draw/draw_pt_post_vs.c +++ b/src/gallium/auxiliary/draw/draw_pt_post_vs.c @@ -57,7 +57,8 @@ dot4(const float *a, const float *b) } static INLINE unsigned -compute_clipmask_gl(const float *clip, /*const*/ float plane[][4], unsigned nr) +compute_clipmask_gl(const float *clip, /*const*/ float plane[][4], unsigned nr, + boolean clip_depth) { unsigned mask = 0x0; unsigned i; @@ -74,8 +75,10 @@ compute_clipmask_gl(const float *clip, /*const*/ float plane[][4], unsigned nr) if ( clip[0] + clip[3] < 0) mask |= (1<<1); if (-clip[1] + clip[3] < 0) mask |= (1<<2); if ( clip[1] + clip[3] < 0) mask |= (1<<3); - if ( clip[2] + clip[3] < 0) mask |= (1<<4); /* match mesa clipplane numbering - for now */ - if (-clip[2] + clip[3] < 0) mask |= (1<<5); /* match mesa clipplane numbering - for now */ + if (clip_depth) { + if ( clip[2] + clip[3] < 0) mask |= (1<<4); /* match mesa clipplane numbering - for now */ + if (-clip[2] + clip[3] < 0) mask |= (1<<5); /* match mesa clipplane numbering - for now */ + } /* Followed by any remaining ones: */ @@ -120,9 +123,11 @@ static boolean post_vs_cliptest_viewport_gl( struct pt_post_vs *pvs, out->clip[3] = position[3]; out->vertex_id = 0xffff; + /* Disable depth clipping if depth clamping is enabled. */ out->clipmask = compute_clipmask_gl(out->clip, pvs->draw->plane, - pvs->draw->nr_planes); + pvs->draw->nr_planes, + !pvs->draw->depth_clamp); clipped += out->clipmask; if (out->clipmask == 0) |