diff options
| author | Marek Olšák <[email protected]> | 2009-11-14 23:27:20 +0100 |
|---|---|---|
| committer | Corbin Simpson <[email protected]> | 2009-11-20 17:58:13 -0800 |
| commit | b7078a88119e248b0196f7446abe029c22f1ee28 (patch) | |
| tree | 7a52ddadbaca3266017bc818cb7598f0b5c12ff5 /src/gallium/drivers/r300/r300_state.c | |
| parent | 1c181a7eff96816b5d72ea5daab5818eef0ebc60 (diff) | |
r300g: add texture lod clamping
These now work:
piglit/lodclamp
piglit/levelclamp
Diffstat (limited to 'src/gallium/drivers/r300/r300_state.c')
| -rw-r--r-- | src/gallium/drivers/r300/r300_state.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/gallium/drivers/r300/r300_state.c b/src/gallium/drivers/r300/r300_state.c index 5422a2cc9c8..f2867675f0f 100644 --- a/src/gallium/drivers/r300/r300_state.c +++ b/src/gallium/drivers/r300/r300_state.c @@ -523,6 +523,11 @@ static void* state->mag_img_filter, state->min_mip_filter); + /* Unfortunately, r300-r500 don't support floating-point mipmap lods. */ + /* We must pass these to the emit function to clamp them properly. */ + sampler->min_lod = MAX2((unsigned)state->min_lod, 0); + sampler->max_lod = MAX2((unsigned)ceilf(state->max_lod), 0); + lod_bias = CLAMP((int)(state->lod_bias * 32), -(1 << 9), (1 << 9) - 1); sampler->filter1 |= lod_bias << R300_LOD_BIAS_SHIFT; |