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r300g: Properly take the sampler view's first_level into account when sampling.

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Signed-off-by: Brian Paul <brianp@vmware.com>
Signed-off-by: Marek Olšák <maraeo@gmail.com>
This commit is contained in:
Henri Verbeet 2011-01-17 22:03:30 +01:00 • committed by Marek Olšák
parent 08070cead0
commit 1bcdc1e319
1 changed files with 20 additions and 14 deletions
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34
src/gallium/drivers/r300/r300_state_derived.c
View file

@ -768,7 +768,7 @@ static void r300_merge_textures_and_samplers(struct r300_context* r300)
struct r300_sampler_state *sampler;
struct r300_sampler_view *view;
struct r300_resource *tex;
unsigned min_level, max_level, i, j, size;
unsigned base_level, min_level, level_count, i, j, size;
unsigned count = MIN2(state->sampler_view_count,
state->sampler_state_count);
boolean has_us_format = r300->screen->caps.has_us_format;
@ -801,21 +801,27 @@ static void r300_merge_textures_and_samplers(struct r300_context* r300)
r300->screen->caps.is_r500);
/* determine min/max levels */
max_level = MIN3(sampler->max_lod + view->base.u.tex.first_level,
tex->b.b.b.last_level, view->base.u.tex.last_level);
min_level = MIN2(sampler->min_lod + view->base.u.tex.first_level,
max_level);
base_level = view->base.u.tex.first_level;
min_level = sampler->min_lod;
level_count = MIN3(sampler->max_lod,
tex->b.b.b.last_level - base_level,
view->base.u.tex.last_level - base_level);
if (tex->tex.is_npot && min_level > 0) {
/* Even though we do not implement mipmapping for NPOT
* textures, we should at least honor the minimum level
* which is allowed to be displayed. We do this by setting up
* the i-th mipmap level as the zero level. */
unsigned offset = tex->tex_offset +
tex->tex.offset_in_bytes[min_level];
if (base_level + min_level) {
unsigned offset;
if (tex->tex.is_npot) {
/* Even though we do not implement mipmapping for NPOT
* textures, we should at least honor the minimum level
* which is allowed to be displayed. We do this by setting up
* an i-th mipmap level as the zero level. */
base_level += min_level;
}
offset = tex->tex_offset +
tex->tex.offset_in_bytes[base_level];
r300_texture_setup_format_state(r300->screen, tex,
min_level,
base_level,
&texstate->format);
texstate->format.tile_config |= offset & 0xffffffe0;
assert((offset & 0x1f) == 0);
@ -892,7 +898,7 @@ static void r300_merge_textures_and_samplers(struct r300_context* r300)
}
} else {
/* the MAX_MIP level is the largest (finest) one */
texstate->format.format0 |= R300_TX_NUM_LEVELS(max_level);
texstate->format.format0 |= R300_TX_NUM_LEVELS(level_count);
texstate->filter0 |= R300_TX_MAX_MIP_LEVEL(min_level);
}