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/branches/ver0branch/floor0Row.vhd
0,0 → 1,107
-- Author : Julian Andres Guarin Reyes.
-- Project : JART, Just Another Ray Tracer.
-- email : jguarin2002 at gmail.com, j.guarin at javeriana.edu.co
 
-- This code was entirely written by Julian Andres Guarin Reyes.
-- The following code is licensed under GNU Public License
-- http://www.gnu.org/licenses/gpl-3.0.txt.
 
-- This file is part of JART (Just Another Ray Tracer).
 
-- JART (Just Another Ray Tracer) is free software: you can redistribute it and/or modify
-- it under the terms of the GNU General Public License as published by
-- the Free Software Foundation, either version 3 of the License, or
-- (at your option) any later version.
 
-- JART (Just Another Ray Tracer) is distributed in the hope that it will be useful,
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-- GNU General Public License for more details.
 
-- You should have received a copy of the GNU General Public License
-- along with JART (Just Another Ray Tracer). If not, see <http://www.gnu.org/licenses/>.
-- This file is an instantiation of a dot cells row. The number of dot cells used is parameterizable.
library ieee;
use ieee.std_logic_1164.all;
use work.powerGrid.all;
 
 
entity floor0Row is
generic (
nlw : integer := 32; -- Next Level Width (V.D width)
viw : integer := 18; -- Vector input Width
col : integer := 4; -- Number of Colums
);
port ( -- Input Control Signal
clk, rst, nxtRay : in std_logic;
-- Clk, Rst, the usual control signals.
-- enabled, the machine is running when this input is set.
-- enabled, all the counters begin again.
nxtSphere : in std_logic_vector (col-1 downto 0);
-- Input Values
iRayx: in std_logic_vector (viw - 1 downto 0);
iRayy: in std_logic_vector (viw - 1 downto 0);
iRayz: in std_logic_vector (viw - 1 downto 0); -- The ray input vector.
iSphrCenterx: in std_logic_vector (col*viw - 1 downto 0); -- The spheres positions (sphere centers) input vectors.
iSphrCentery: in std_logic_vector (col*viw - 1 downto 0); -- The spheres positions (sphere centers) input vectors.
iSphrCenterz: in std_logic_vector (col*viw - 1 downto 0); -- The spheres positions (sphere centers) input vectors.
oSphrCenterx: out std_logic_vector (col*viw - 1 downto 0); -- The spheres positions (sphere centers) input vectors.
oSphrCentery: out std_logic_vector (col*viw - 1 downto 0); -- The spheres positions (sphere centers) input vectors.
oSphrCenterz: out std_logic_vector (col*viw - 1 downto 0); -- The spheres positions (sphere centers) input vectors.
-- Output Values
oRayx: out std_logic_vector (viw - 1 downto 0);-- The ray output vector.
oRayy: out std_logic_vector (viw - 1 downto 0);-- The ray output vector.
oRayz: out std_logic_vector (viw - 1 downto 0);-- The ray output vector.
vdOutput : out std_logic_vector (nlw*col - 1 downto 0) -- The dot product emerging from each dot prod cell.
);
end entity;
architecture rtl of floor0Row is
 
signal sRayx : std_logic_vector ((col+1)*viw - 1 downto 0); -- The ray difussion nets.
signal sRayy : std_logic_vector ((col+1)*viw - 1 downto 0); -- The ray difussion nets.
signal sRayz : std_logic_vector ((col+1)*viw - 1 downto 0); -- The ray difussion nets.
begin
 
theCells : for i in 0 to col-1 generate
dotCellx : dotCell port map (
clk => clk,
rst => rst,
nxtSphere => nxtSphere(i),
nxtRay => nxtRay,
vxInput => iSphrCenterx((i+1)*viw-1 downto i*viw),
vyInput => iSphrCentery((i+1)*viw-1 downto i*viw),
vzInput => iSphrCenterz((i+1)*viw-1 downto i*viw),
vxOutput => oSphrCenterx((i+1)*viw-1 downto i*viw),
vyOutput => oSphrCentery((i+1)*viw-1 downto i*viw),
vzOutput => oSphrCenterz((i+1)*viw-1 downto i*viw),
dxInput => sRayx ((i+1)*viw-1 downto i*viw),
dyInput => sRayx ((i+1)*viw-1 downto i*viw),
dzInput => sRayx ((i+1)*viw-1 downto i*viw),
dxOutput => sRayx ((i+2)*viw-1 downto (i+1)*viw),
dyOutput => sRayx ((i+2)*viw-1 downto (i+1)*viw),
dzOutput => sRayx ((i+2)*viw-1 downto (i+1)*viw),
vdOutput => vdOutput((i+1)*view-1 downto i*viw)
);
 
end generate;
 
-- Connect the first and last rays.
sRayx (viw-1 downto 0) <= iRayx;
sRayy (viw-1 downto 0) <= iRayy;
sRayz (viw-1 downto 0) <= iRayz;
oRayx <= sRayx ((col+1)*viw - 1 downto col*viw);
oRayy <= sRayy ((col+1)*viw - 1 downto col*viw);
oRayz <= sRayz ((col+1)*viw - 1 downto col*viw);
 
end rtl;

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