diff options
| author | Alex Deucher <[email protected]> | 2011-02-28 21:52:19 -0500 |
|---|---|---|
| committer | Alex Deucher <[email protected]> | 2011-02-28 22:01:59 -0500 |
| commit | 1dc204d145dc8c0b19473a7814c201a8954b6274 (patch) | |
| tree | ddd4b0e77d37cb420945cff2f1644d0d572f9297 | |
| parent | 6c324777a685d28d0a81d23157e4863240552999 (diff) | |
r600g: truncate point sampled texture coordinates
By default the hardware rounds texcoords. However,
for point sampled textures, the expected behavior is
to truncate. When we have point sampled textures,
set the truncate bit in the sampler.
Should fix:
https://bugs.freedesktop.org/show_bug.cgi?id=25871
Signed-off-by: Alex Deucher <[email protected]>
| -rw-r--r-- | src/gallium/drivers/r600/evergreen_state.c | 6 | ||||
| -rw-r--r-- | src/gallium/drivers/r600/r600_state.c | 9 |
2 files changed, 14 insertions, 1 deletions
diff --git a/src/gallium/drivers/r600/evergreen_state.c b/src/gallium/drivers/r600/evergreen_state.c index 3efdbaba0c3..a388476b017 100644 --- a/src/gallium/drivers/r600/evergreen_state.c +++ b/src/gallium/drivers/r600/evergreen_state.c @@ -305,11 +305,16 @@ static void *evergreen_create_sampler_state(struct pipe_context *ctx, { struct r600_pipe_state *rstate = CALLOC_STRUCT(r600_pipe_state); union util_color uc; + uint32_t coord_trunc = 0; if (rstate == NULL) { return NULL; } + if ((state->mag_img_filter == PIPE_TEX_FILTER_NEAREST) || + (state->min_img_filter == PIPE_TEX_FILTER_NEAREST)) + coord_trunc = 1; + rstate->id = R600_PIPE_STATE_SAMPLER; util_pack_color(state->border_color, PIPE_FORMAT_B8G8R8A8_UNORM, &uc); r600_pipe_state_add_reg(rstate, R_03C000_SQ_TEX_SAMPLER_WORD0_0, @@ -328,6 +333,7 @@ static void *evergreen_create_sampler_state(struct pipe_context *ctx, 0xFFFFFFFF, NULL); r600_pipe_state_add_reg(rstate, R_03C008_SQ_TEX_SAMPLER_WORD2_0, S_03C008_LOD_BIAS(S_FIXED(CLAMP(state->lod_bias, -16, 16), 8)) | + S_03C008_MC_COORD_TRUNCATE(coord_trunc) | S_03C008_TYPE(1), 0xFFFFFFFF, NULL); diff --git a/src/gallium/drivers/r600/r600_state.c b/src/gallium/drivers/r600/r600_state.c index c365979e439..3f2af7d17bd 100644 --- a/src/gallium/drivers/r600/r600_state.c +++ b/src/gallium/drivers/r600/r600_state.c @@ -358,11 +358,16 @@ static void *r600_create_sampler_state(struct pipe_context *ctx, { struct r600_pipe_state *rstate = CALLOC_STRUCT(r600_pipe_state); union util_color uc; + uint32_t coord_trunc = 0; if (rstate == NULL) { return NULL; } + if ((state->mag_img_filter == PIPE_TEX_FILTER_NEAREST) || + (state->min_img_filter == PIPE_TEX_FILTER_NEAREST)) + coord_trunc = 1; + rstate->id = R600_PIPE_STATE_SAMPLER; util_pack_color(state->border_color, PIPE_FORMAT_B8G8R8A8_UNORM, &uc); r600_pipe_state_add_reg(rstate, R_03C000_SQ_TEX_SAMPLER_WORD0_0, @@ -379,7 +384,9 @@ static void *r600_create_sampler_state(struct pipe_context *ctx, S_03C004_MIN_LOD(S_FIXED(CLAMP(state->min_lod, 0, 15), 6)) | S_03C004_MAX_LOD(S_FIXED(CLAMP(state->max_lod, 0, 15), 6)) | S_03C004_LOD_BIAS(S_FIXED(CLAMP(state->lod_bias, -16, 16), 6)), 0xFFFFFFFF, NULL); - r600_pipe_state_add_reg(rstate, R_03C008_SQ_TEX_SAMPLER_WORD2_0, S_03C008_TYPE(1), 0xFFFFFFFF, NULL); + r600_pipe_state_add_reg(rstate, R_03C008_SQ_TEX_SAMPLER_WORD2_0, + S_03C008_MC_COORD_TRUNCATE(coord_trunc) | + S_03C008_TYPE(1), 0xFFFFFFFF, NULL); if (uc.ui) { r600_pipe_state_add_reg(rstate, R_00A400_TD_PS_SAMPLER0_BORDER_RED, fui(state->border_color[0]), 0xFFFFFFFF, NULL); r600_pipe_state_add_reg(rstate, R_00A404_TD_PS_SAMPLER0_BORDER_GREEN, fui(state->border_color[1]), 0xFFFFFFFF, NULL); |