diff options
Diffstat (limited to 'src/gallium/drivers/r300/r300_state.c')
| -rw-r--r-- | src/gallium/drivers/r300/r300_state.c | 34 |
1 files changed, 33 insertions, 1 deletions
diff --git a/src/gallium/drivers/r300/r300_state.c b/src/gallium/drivers/r300/r300_state.c index 256184aac9..9c5a2a05bd 100644 --- a/src/gallium/drivers/r300/r300_state.c +++ b/src/gallium/drivers/r300/r300_state.c @@ -1107,6 +1107,28 @@ static void r300_delete_sampler_state(struct pipe_context* pipe, void* state) FREE(state); } +static uint32_t r300_assign_texture_cache_region(unsigned index, unsigned num) +{ + /* This looks like a hack, but I believe it's suppose to work like + * that. To illustrate how this works, let's assume you have 5 textures. + * From docs, 5 and the successive numbers are: + * + * FOURTH_1 = 5 + * FOURTH_2 = 6 + * FOURTH_3 = 7 + * EIGHTH_0 = 8 + * EIGHTH_1 = 9 + * + * First 3 textures will get 3/4 of size of the cache, divived evenly + * between them. The last 1/4 of the cache must be divided between + * the last 2 textures, each will therefore get 1/8 of the cache. + * Why not just to use "5 + texture_index" ? + * + * This simple trick works for all "num" <= 16. + */ + return R300_TX_CACHE(num + index); +} + static void r300_set_fragment_sampler_views(struct pipe_context* pipe, unsigned count, struct pipe_sampler_view** views) @@ -1115,7 +1137,7 @@ static void r300_set_fragment_sampler_views(struct pipe_context* pipe, struct r300_textures_state* state = (struct r300_textures_state*)r300->textures_state.state; struct r300_texture *texture; - unsigned i; + unsigned i, real_num_views = 0, view_index = 0; unsigned tex_units = r300->screen->caps.num_tex_units; boolean dirty_tex = FALSE; @@ -1123,6 +1145,12 @@ static void r300_set_fragment_sampler_views(struct pipe_context* pipe, return; } + /* Calculate the real number of views. */ + for (i = 0; i < count; i++) { + if (views[i]) + real_num_views++; + } + for (i = 0; i < count; i++) { if (&state->sampler_views[i]->base != views[i]) { pipe_sampler_view_reference( @@ -1142,6 +1170,10 @@ static void r300_set_fragment_sampler_views(struct pipe_context* pipe, if (texture->uses_pitch) { r300->fs_rc_constant_state.dirty = TRUE; } + + state->sampler_views[i]->texcache_region = + r300_assign_texture_cache_region(view_index, real_num_views); + view_index++; } } |