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| 1901 | serge | 1 | /************************************************************************** |
| 2 | * |
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| 3 | * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. |
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| 4 | * All Rights Reserved. |
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| 5 | * |
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| 6 | * Permission is hereby granted, free of charge, to any person obtaining a |
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| 7 | * copy of this software and associated documentation files (the |
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| 8 | * "Software"), to deal in the Software without restriction, including |
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| 9 | * without limitation the rights to use, copy, modify, merge, publish, |
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| 10 | * distribute, sub license, and/or sell copies of the Software, and to |
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| 11 | * permit persons to whom the Software is furnished to do so, subject to |
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| 12 | * the following conditions: |
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| 13 | * |
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| 14 | * The above copyright notice and this permission notice (including the |
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| 15 | * next paragraph) shall be included in all copies or substantial portions |
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| 16 | * of the Software. |
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| 17 | * |
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| 18 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
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| 19 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
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| 20 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. |
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| 21 | * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR |
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| 22 | * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
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| 23 | * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
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| 24 | * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
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| 25 | * |
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| 26 | **************************************************************************/ |
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| 27 | |||
| 28 | /* |
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| 29 | * Authors: |
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| 30 | * Keith Whitwell |
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| 31 | */ |
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| 32 | |||
| 33 | |||
| 34 | #include "st_context.h" |
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| 35 | #include "pipe/p_context.h" |
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| 36 | #include "st_atom.h" |
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| 37 | |||
| 38 | #include "cso_cache/cso_context.h" |
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| 39 | |||
| 40 | |||
| 41 | /* Second state atom for user clip planes: |
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| 42 | */ |
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| 43 | static void update_clip( struct st_context *st ) |
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| 44 | { |
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| 45 | struct pipe_clip_state clip; |
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| 46 | GLuint i; |
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| 47 | |||
| 48 | memset(&clip, 0, sizeof(clip)); |
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| 49 | |||
| 50 | for (i = 0; i < PIPE_MAX_CLIP_PLANES; i++) { |
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| 51 | if (st->ctx->Transform.ClipPlanesEnabled & (1 << i)) { |
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| 52 | memcpy(clip.ucp[clip.nr], |
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| 53 | st->ctx->Transform._ClipUserPlane[i], |
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| 54 | sizeof(clip.ucp[0])); |
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| 55 | clip.nr++; |
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| 56 | } |
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| 57 | } |
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| 58 | |||
| 59 | clip.depth_clamp = st->ctx->Transform.DepthClamp != GL_FALSE; |
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| 60 | |||
| 61 | if (memcmp(&clip, &st->state.clip, sizeof(clip)) != 0) { |
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| 62 | st->state.clip = clip; |
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| 63 | cso_set_clip(st->cso_context, &clip); |
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| 64 | } |
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| 65 | } |
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| 66 | |||
| 67 | |||
| 68 | const struct st_tracked_state st_update_clip = { |
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| 69 | "st_update_clip", /* name */ |
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| 70 | { /* dirty */ |
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| 71 | (_NEW_TRANSFORM), /* mesa */ |
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| 72 | 0, /* st */ |
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| 73 | }, |
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| 74 | update_clip /* update */ |
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| 75 | }; |