| 0,0 → 1,83 |
|---|
| /************************************************************************** |
| * |
| * Copyright 2010 VMware, Inc. |
| * All Rights Reserved. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the |
| * "Software"), to deal in the Software without restriction, including |
| * without limitation the rights to use, copy, modify, merge, publish, |
| * distribute, sub license, and/or sell copies of the Software, and to |
| * permit persons to whom the Software is furnished to do so, subject to |
| * the following conditions: |
| * |
| * The above copyright notice and this permission notice (including the |
| * next paragraph) shall be included in all copies or substantial portions |
| * of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
| * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. |
| * IN NO EVENT SHALL THE AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR |
| * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
| * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
| * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| * |
| **************************************************************************/ |
| |
| |
| #include "st_context.h" |
| #include "pipe/p_context.h" |
| #include "st_atom.h" |
| |
| #include "cso_cache/cso_context.h" |
| |
| |
| /* Second state atom for user clip planes: |
| */ |
| static void update_sample_mask( struct st_context *st ) |
| { |
| unsigned sample_mask = 0xffffffff; |
| unsigned sample_count = 1; |
| struct pipe_framebuffer_state *framebuffer = &st->state.framebuffer; |
| |
| /* dependency here on bound surface (or rather, sample count) is worrying */ |
| if (framebuffer->zsbuf) |
| sample_count = framebuffer->zsbuf->texture->nr_samples; |
| else if (framebuffer->cbufs[0]) |
| sample_count = framebuffer->cbufs[0]->texture->nr_samples; |
| |
| if (st->ctx->Multisample.Enabled && sample_count > 1) { |
| /* unlike in gallium/d3d10 the mask is only active if msaa is enabled */ |
| if (st->ctx->Multisample.SampleCoverage) { |
| unsigned nr_bits; |
| nr_bits = st->ctx->Multisample.SampleCoverageValue * (float)sample_count; |
| /* there's lot of ways how to do this. We just use first few bits, |
| since we have no knowledge of sample positions here. When |
| app-supplied mask though is used too might need to be smarter. |
| Also, there's a interface restriction here in theory it is |
| encouraged this mask not be the same at each pixel. */ |
| sample_mask = (1 << nr_bits) - 1; |
| if (st->ctx->Multisample.SampleCoverageInvert) |
| sample_mask = ~sample_mask; |
| } |
| /* TODO merge with app-supplied sample mask */ |
| } |
| |
| /* mask off unused bits or don't care? */ |
| |
| if (sample_mask != st->state.sample_mask) { |
| st->state.sample_mask = sample_mask; |
| cso_set_sample_mask(st->cso_context, sample_mask); |
| } |
| } |
| |
| |
| const struct st_tracked_state st_update_msaa = { |
| "st_update_msaa", /* name */ |
| { /* dirty */ |
| (_NEW_MULTISAMPLE | _NEW_BUFFERS), /* mesa */ |
| ST_NEW_FRAMEBUFFER, /* st */ |
| }, |
| update_sample_mask /* update */ |
| }; |