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// Abstract:
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// Abstract:
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// Construct triangle from vertices.
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// Construct triangle from vertices.
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// divide by 2 x, y after integer convesion
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// divide by 2 x, y after integer convesion
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//
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//
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// Author:
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// Author:
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// Kenji Ishimaru (kenji.ishimaru@prtissimo.com)
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// Kenji Ishimaru (info.wf3d@gmail.com)
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//
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//
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//======================================================================
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//======================================================================
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//
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//
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// Copyright (c) 2015, Kenji Ishimaru
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// Copyright (c) 2015, Kenji Ishimaru
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// All rights reserved.
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// All rights reserved.
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// WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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// WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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// OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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// OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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// EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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//
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// Revision History
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// Revision History
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// Bugfix
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// w_all_inside,w_all_outside needs bit reduction
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// w_all_inside,w_all_outside needs bit reduction
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`include "fm_3d_define.v"
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`include "fm_3d_define.v"
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module fm_geo_tri (
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module fm_geo_tri (
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input clk_core,
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input clk_core,
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input rst_x,
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input rst_x,
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// o_outcode[1] : +X plane
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// o_outcode[1] : +X plane
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// o_outcode[2] : -Y plane
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// o_outcode[2] : -Y plane
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// o_outcode[3] : +Y plane
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// o_outcode[3] : +Y plane
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// o_outcode[4] : -Z plane
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// o_outcode[4] : -Z plane
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// o_outcode[5] : +Z plane
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// o_outcode[5] : +Z plane
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assign w_all_inside = ~(|(r_v0_outcode | r_v1_outcode | r_v2_outcode));
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assign w_all_inside = ~(r_v0_outcode | r_v1_outcode | r_v2_outcode);
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assign w_all_outside = |(r_v0_outcode & r_v1_outcode & r_v2_outcode);
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assign w_all_outside = (r_v0_outcode & r_v1_outcode & r_v2_outcode);
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//assign w_all_inside = ~(r_v0_outcode | r_v1_outcode | r_v2_outcode);
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//assign w_all_outside = (r_v0_outcode & r_v1_outcode & r_v2_outcode);
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assign w_z_outside = (|r_v0_outcode[5:4]) |
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assign w_z_outside = (|r_v0_outcode[5:4]) |
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(|r_v1_outcode[5:4]) |
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(|r_v1_outcode[5:4]) |
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(|r_v2_outcode[5:4]);
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(|r_v2_outcode[5:4]);
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assign w_tri_outside = w_all_outside | w_z_outside;
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assign w_tri_outside = w_all_outside | w_z_outside;
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