diff options
| author | Axel Davy <axel.davy@ens.fr> | 2015-01-14 12:10:48 +0100 |
|---|---|---|
| committer | Axel Davy <axel.davy@ens.fr> | 2015-02-06 00:07:19 +0100 |
| commit | bf0adf248f3562e6fb205b31d14f650ab0a14c8e (patch) | |
| tree | bb222a2658eb8307b41b9e859b97a569260688f3 /src/gallium | |
| parent | 34292754d2852980cd685fb0ef54b40f38235aab (diff) | |
st/nine: Add D3DFMT_DF16 support
This depth buffer format, like D3DFMT_INTZ, can be used to read
the depth buffer values when bound to a shader.
Some apps may use this format to get better performance when
they don't need the precision of INTZ (24 bits for depth, 8 for
stencil, whereas DF16 is just 16 bits for depth)
We don't add support for DF24 yet, because it implies support
for FETCH4, which we don't support for now.
Reviewed-by: Tiziano Bacocco <tizbac2@gmail.com>
Signed-off-by: Axel Davy <axel.davy@ens.fr>
Diffstat (limited to 'src/gallium')
| -rw-r--r-- | src/gallium/state_trackers/nine/basetexture9.c | 12 | ||||
| -rw-r--r-- | src/gallium/state_trackers/nine/nine_pipe.h | 6 |
2 files changed, 14 insertions, 4 deletions
diff --git a/src/gallium/state_trackers/nine/basetexture9.c b/src/gallium/state_trackers/nine/basetexture9.c index 8d183e65d46..f2ca35b0205 100644 --- a/src/gallium/state_trackers/nine/basetexture9.c +++ b/src/gallium/state_trackers/nine/basetexture9.c @@ -69,8 +69,16 @@ NineBaseTexture9_ctor( struct NineBaseTexture9 *This, D3DTEXF_LINEAR : D3DTEXF_NONE; This->lod = 0; This->lod_resident = -1; - This->shadow = This->format != D3DFMT_INTZ && util_format_has_depth( - util_format_description(This->base.info.format)); + /* When a depth buffer is sampled, it is for shadow mapping, except for + * D3DFMT_INTZ, D3DFMT_DF16 and D3DFMT_DF24. + * In addition D3DFMT_INTZ can be used for both texturing and depth buffering + * if z write is disabled. This particular feature may not work for us in + * practice because OGL doesn't have that. However apparently it is known + * some cards have performance issues with this feature, so real apps + * shouldn't use it. */ + This->shadow = (This->format != D3DFMT_INTZ && This->format != D3DFMT_DF16 && + This->format != D3DFMT_DF24) && + util_format_has_depth(util_format_description(This->base.info.format)); list_inithead(&This->list); diff --git a/src/gallium/state_trackers/nine/nine_pipe.h b/src/gallium/state_trackers/nine/nine_pipe.h index 6e4ee43f5a5..640bbdbfbf2 100644 --- a/src/gallium/state_trackers/nine/nine_pipe.h +++ b/src/gallium/state_trackers/nine/nine_pipe.h @@ -182,6 +182,7 @@ d3d9_to_pipe_format_internal(D3DFORMAT format) return nine_d3d9_to_pipe_format_map[format]; switch (format) { case D3DFMT_INTZ: return PIPE_FORMAT_S8_UINT_Z24_UNORM; + case D3DFMT_DF16: return PIPE_FORMAT_Z16_UNORM; case D3DFMT_DXT1: return PIPE_FORMAT_DXT1_RGBA; case D3DFMT_DXT2: return PIPE_FORMAT_DXT3_RGBA; /* XXX */ case D3DFMT_DXT3: return PIPE_FORMAT_DXT3_RGBA; @@ -199,8 +200,9 @@ d3d9_to_pipe_format_internal(D3DFORMAT format) case D3DFMT_Y210: /* XXX */ case D3DFMT_Y216: case D3DFMT_NV11: - case D3DFMT_DF16: /* useless, not supported by wine either */ - case D3DFMT_DF24: /* useless, not supported by wine either */ + case D3DFMT_DF24: /* Similar to D3DFMT_DF16 but for 24-bits. + We don't advertise it because when it is supported, Fetch-4 is + supposed to be supported, which we don't support yet. */ case D3DFMT_NULL: /* special cased, only for surfaces */ return PIPE_FORMAT_NONE; default: |