diff options
| author | Marek Olšák <maraeo@gmail.com> | 2010-07-25 23:40:51 +0200 |
|---|---|---|
| committer | Marek Olšák <maraeo@gmail.com> | 2010-07-25 23:40:51 +0200 |
| commit | 6f2936c654c68388b9c43a189a1b8c06f3a9d241 (patch) | |
| tree | f9bb4191f6b07f59b604e5067005b22e41756fa5 /src/gallium/drivers/r300/r300_state.c | |
| parent | 451a0ddb190e5185372fed9ec57d24a822442ecc (diff) | |
r300g: implement D24X8 texture sampling for r3xx-r4xx
Because the hw can't sample it, I reinterpret the format as G16R16 and
sample the G component. This gives 16 bits of precision, which should be
enough for depth texturing (surprisingly, the sampled values are exactly
the same as in D16 textures).
This also enables EXT_packed_depth_stencil on those old chipsets, finally.
Diffstat (limited to 'src/gallium/drivers/r300/r300_state.c')
| -rw-r--r-- | src/gallium/drivers/r300/r300_state.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/src/gallium/drivers/r300/r300_state.c b/src/gallium/drivers/r300/r300_state.c index bbea7e1589..3e221f2e02 100644 --- a/src/gallium/drivers/r300/r300_state.c +++ b/src/gallium/drivers/r300/r300_state.c @@ -1330,6 +1330,7 @@ r300_create_sampler_view(struct pipe_context *pipe, { struct r300_sampler_view *view = CALLOC_STRUCT(r300_sampler_view); struct r300_texture *tex = r300_texture(texture); + boolean is_r500 = r300_screen(pipe->screen)->caps.is_r500; if (view) { view->base = *templ; @@ -1345,8 +1346,9 @@ r300_create_sampler_view(struct pipe_context *pipe, view->format = tex->tx_format; view->format.format1 |= r300_translate_texformat(templ->format, - view->swizzle); - if (r300_screen(pipe->screen)->caps.is_r500) { + view->swizzle, + is_r500); + if (is_r500) { view->format.format2 |= r500_tx_format_msb_bit(templ->format); } } |