1f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org/************************************************************************** 2f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 3f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. 4f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * All Rights Reserved. 5f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 6f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Permission is hereby granted, free of charge, to any person obtaining a 7f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * copy of this software and associated documentation files (the 8f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * "Software"), to deal in the Software without restriction, including 9f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * without limitation the rights to use, copy, modify, merge, publish, 10f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * distribute, sub license, and/or sell copies of the Software, and to 11f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * permit persons to whom the Software is furnished to do so, subject to 12f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * the following conditions: 13f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 14f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * The above copyright notice and this permission notice (including the 15f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * next paragraph) shall be included in all copies or substantial portions 16f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * of the Software. 17f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 18f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 19f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 20f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. 21f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR 22f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 23f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 24f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 25f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 26f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org **************************************************************************/ 27f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 28f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* 29f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Authors: 30f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Keith Whitwell <keith@tungstengraphics.com> 31f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org */ 32f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 33f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 34f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#include "st_context.h" 35f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#include "pipe/p_context.h" 36f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#include "st_atom.h" 37f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#include "st_program.h" 38f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#include "util/u_debug.h" 39f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#include "cso_cache/cso_context.h" 40f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 41f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 42f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org/* Second state atom for user clip planes: 43f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org */ 44f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgstatic void update_clip( struct st_context *st ) 45f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org{ 46f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org struct pipe_clip_state clip; 47f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org const struct gl_context *ctx = st->ctx; 48f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org bool use_eye = FALSE; 49f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 50f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org STATIC_ASSERT(sizeof(clip.ucp) <= sizeof(ctx->Transform._ClipUserPlane)); 51f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 52f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* if we have a vertex shader that writes clip vertex we need to pass 53f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org the pre-projection transformed coordinates into the driver. */ 54f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (st->vp) { 55f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (ctx->Shader.CurrentVertexProgram) 56f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org use_eye = TRUE; 57f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 58f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 59f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org memcpy(clip.ucp, 60f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org use_eye ? ctx->Transform.EyeUserPlane 61f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org : ctx->Transform._ClipUserPlane, sizeof(clip.ucp)); 62f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org st->state.clip = clip; 63f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org cso_set_clip(st->cso_context, &clip); 64f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} 65f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 66f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 67f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgconst struct st_tracked_state st_update_clip = { 68f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org "st_update_clip", /* name */ 69f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org { /* dirty */ 70f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org (_NEW_TRANSFORM | _NEW_PROGRAM), /* mesa */ 71f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 0, /* st */ 72f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org }, 73f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org update_clip /* update */ 74f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org}; 75