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_screen.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_screen.c')
| -rw-r--r-- | src/gallium/drivers/r300/r300_screen.c | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/src/gallium/drivers/r300/r300_screen.c b/src/gallium/drivers/r300/r300_screen.c index 5a11b98eb6..676430f5fe 100644 --- a/src/gallium/drivers/r300/r300_screen.c +++ b/src/gallium/drivers/r300/r300_screen.c @@ -257,8 +257,6 @@ static boolean r300_is_format_supported(struct pipe_screen* screen, uint32_t retval = 0; boolean is_r500 = r300_screen(screen)->caps.is_r500; boolean is_r400 = r300_screen(screen)->caps.is_r400; - boolean is_z24 = format == PIPE_FORMAT_X8Z24_UNORM || - format == PIPE_FORMAT_S8_USCALED_Z24_UNORM; boolean is_color2101010 = format == PIPE_FORMAT_R10G10B10A2_UNORM || format == PIPE_FORMAT_R10G10B10X2_SNORM || format == PIPE_FORMAT_B10G10R10A2_UNORM || @@ -293,8 +291,6 @@ static boolean r300_is_format_supported(struct pipe_screen* screen, /* Check sampler format support. */ if ((usage & PIPE_BIND_SAMPLER_VIEW) && - /* Z24 cannot be sampled from on non-r5xx. */ - (is_r500 || !is_z24) && /* ATI1N is r5xx-only. */ (is_r500 || !is_ati1n) && /* ATI2N is supported on r4xx-r5xx. */ |