| /* |
| * Copyright © 2009 Intel Corporation |
| * |
| * 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, sublicense, |
| * 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 NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE AUTHORS OR COPYRIGHT HOLDERS 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. |
| * |
| * Authors: |
| * Eric Anholt <eric@anholt.net> |
| * |
| */ |
| |
| #include "brw_context.h" |
| #include "brw_state.h" |
| |
| struct brw_depth_stencil_state_key { |
| GLenum depth_func; |
| GLboolean depth_test, depth_write; |
| GLboolean stencil, stencil_two_side; |
| GLenum stencil_func[2], stencil_fail_op[2]; |
| GLenum stencil_pass_depth_fail_op[2], stencil_pass_depth_pass_op[2]; |
| GLubyte stencil_write_mask[2], stencil_test_mask[2]; |
| }; |
| |
| static void |
| depth_stencil_state_populate_key(struct brw_context *brw, |
| struct brw_depth_stencil_state_key *key) |
| { |
| GLcontext *ctx = &brw->intel.ctx; |
| const unsigned back = ctx->Stencil._BackFace; |
| |
| memset(key, 0, sizeof(*key)); |
| |
| /* _NEW_STENCIL */ |
| key->stencil = ctx->Stencil._Enabled; |
| key->stencil_two_side = ctx->Stencil._TestTwoSide; |
| |
| if (key->stencil) { |
| key->stencil_func[0] = ctx->Stencil.Function[0]; |
| key->stencil_fail_op[0] = ctx->Stencil.FailFunc[0]; |
| key->stencil_pass_depth_fail_op[0] = ctx->Stencil.ZFailFunc[0]; |
| key->stencil_pass_depth_pass_op[0] = ctx->Stencil.ZPassFunc[0]; |
| key->stencil_write_mask[0] = ctx->Stencil.WriteMask[0]; |
| key->stencil_test_mask[0] = ctx->Stencil.ValueMask[0]; |
| } |
| if (key->stencil_two_side) { |
| key->stencil_func[1] = ctx->Stencil.Function[back]; |
| key->stencil_fail_op[1] = ctx->Stencil.FailFunc[back]; |
| key->stencil_pass_depth_fail_op[1] = ctx->Stencil.ZFailFunc[back]; |
| key->stencil_pass_depth_pass_op[1] = ctx->Stencil.ZPassFunc[back]; |
| key->stencil_write_mask[1] = ctx->Stencil.WriteMask[back]; |
| key->stencil_test_mask[1] = ctx->Stencil.ValueMask[back]; |
| } |
| |
| key->depth_test = ctx->Depth.Test; |
| if (key->depth_test) { |
| key->depth_func = ctx->Depth.Func; |
| key->depth_write = ctx->Depth.Mask; |
| } |
| } |
| |
| /** |
| * Creates the state cache entry for the given DEPTH_STENCIL_STATE state key. |
| */ |
| static drm_intel_bo * |
| depth_stencil_state_create_from_key(struct brw_context *brw, |
| struct brw_depth_stencil_state_key *key) |
| { |
| struct gen6_depth_stencil_state ds; |
| drm_intel_bo *bo; |
| |
| memset(&ds, 0, sizeof(ds)); |
| |
| /* _NEW_STENCIL */ |
| if (key->stencil) { |
| ds.ds0.stencil_enable = 1; |
| ds.ds0.stencil_func = |
| intel_translate_compare_func(key->stencil_func[0]); |
| ds.ds0.stencil_fail_op = |
| intel_translate_stencil_op(key->stencil_fail_op[0]); |
| ds.ds0.stencil_pass_depth_fail_op = |
| intel_translate_stencil_op(key->stencil_pass_depth_fail_op[0]); |
| ds.ds0.stencil_pass_depth_pass_op = |
| intel_translate_stencil_op(key->stencil_pass_depth_pass_op[0]); |
| ds.ds1.stencil_write_mask = key->stencil_write_mask[0]; |
| ds.ds1.stencil_test_mask = key->stencil_test_mask[0]; |
| |
| if (key->stencil_two_side) { |
| ds.ds0.bf_stencil_enable = 1; |
| ds.ds0.bf_stencil_func = |
| intel_translate_compare_func(key->stencil_func[1]); |
| ds.ds0.bf_stencil_fail_op = |
| intel_translate_stencil_op(key->stencil_fail_op[1]); |
| ds.ds0.bf_stencil_pass_depth_fail_op = |
| intel_translate_stencil_op(key->stencil_pass_depth_fail_op[1]); |
| ds.ds0.bf_stencil_pass_depth_pass_op = |
| intel_translate_stencil_op(key->stencil_pass_depth_pass_op[1]); |
| ds.ds1.bf_stencil_write_mask = key->stencil_write_mask[1]; |
| ds.ds1.bf_stencil_test_mask = key->stencil_test_mask[1]; |
| } |
| |
| /* Not really sure about this: |
| */ |
| if (key->stencil_write_mask[0] || |
| (key->stencil_two_side && key->stencil_write_mask[1])) |
| ds.ds0.stencil_write_enable = 1; |
| } |
| |
| /* _NEW_DEPTH */ |
| if (key->depth_test) { |
| ds.ds2.depth_test_enable = 1; |
| ds.ds2.depth_test_func = intel_translate_compare_func(key->depth_func); |
| ds.ds2.depth_write_enable = key->depth_write; |
| } |
| |
| bo = brw_upload_cache(&brw->cache, BRW_DEPTH_STENCIL_STATE, |
| key, sizeof(*key), |
| NULL, 0, |
| &ds, sizeof(ds)); |
| |
| return bo; |
| } |
| |
| static void |
| prepare_depth_stencil_state(struct brw_context *brw) |
| { |
| struct brw_depth_stencil_state_key key; |
| |
| depth_stencil_state_populate_key(brw, &key); |
| |
| drm_intel_bo_unreference(brw->cc.depth_stencil_state_bo); |
| brw->cc.depth_stencil_state_bo = brw_search_cache(&brw->cache, |
| BRW_DEPTH_STENCIL_STATE, |
| &key, sizeof(key), |
| NULL, 0, |
| NULL); |
| |
| if (brw->cc.depth_stencil_state_bo == NULL) |
| brw->cc.depth_stencil_state_bo = |
| depth_stencil_state_create_from_key(brw, &key); |
| } |
| |
| const struct brw_tracked_state gen6_depth_stencil_state = { |
| .dirty = { |
| .mesa = _NEW_DEPTH | _NEW_STENCIL, |
| .brw = 0, |
| .cache = 0, |
| }, |
| .prepare = prepare_depth_stencil_state, |
| }; |