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[/] [jart/] [trunk/] [BLRT/] [gridCube.vhd] - Rev 81
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-- 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 is it!!!!! The following code represents the whole blocks gathered all together. -- This block represents a processing cube. The cube's height is always 3 (floor 0 to floor 2). The cube width -- is the number of spheres under intersection test each clock. The cube depth represents the number or rays under -- intersection test each clock. -- Details on the cube outputs interpretation, can be found at BlackBook.pdf library ieee; use ieee.std_logic_1164.all; use work.powerGrid.all; entity gridCube is generic ( -- Depth D : integer := 4; -- ID width. IDW : integer := 2; -- Number of Columns. C : integer := 4; -- Input rays width. W0 : integer := 18; -- Dot products and spheres constant width W1 : integer := 32; IDW : integer := 2; ); port ( -- The usual control signals. clk,rst : in std_logic; -- Grid, rays and sphere flow through control signals. pipeOn : in std_logic; -- The same column nxtSphere signal control..... regardless the Cube Depth. nxtSphere : in std_logic_vector (C-1 downto 0); -- R-F0 -- Input Values. -- The ray input vector. iRayx: in std_logic_vector (D*W0 - 1 downto 0); iRayy: in std_logic_vector (D*W0 - 1 downto 0); iRayz: in std_logic_vector (D*W0 - 1 downto 0); -- The spheres x position (sphere centers) input vectors. iSphrCenterx: in std_logic_vector (C*W0 - 1 downto 0); -- The spheres y position (sphere centers) input vectors. iSphrCentery: in std_logic_vector (C*W0 - 1 downto 0); -- The spheres z position (sphere centers) input vectors. iSphrCenterz: in std_logic_vector (C*W0 - 1 downto 0); -- The spheres x position (sphere centers) output vectors. oSphrCenterx: out std_logic_vector (C*W0 - 1 downto 0); -- The spheres y positions (sphere centes) output vectors. oSphrCentery: out std_logic_vector (C*W0 - 1 downto 0); -- The spheres z positions (sphere centers) output vectors. oSphrCenterz: out std_logic_vector (C*W0 - 1 downto 0); -- Output Values -- The ray output vector. oRayx: out std_logic_vector (D*W0 - 1 downto 0); oRayy: out std_logic_vector (D*W0 - 1 downto 0); oRayz: out std_logic_vector (D*W0 - 1 downto 0); -- R-F1 -- K Input / Output. kInput : in std_logic_vector (C*W1 - 1 downto 0); kOutput : out std_logic_vector (C*W1 - 1 downto 0) --R-F2 -- Input Values refvd : in std_logic_vector (D*W1-1 downto 0); selvd : out std_logic_vector (D*W1-1 downto 0); colid : out std_logic_vector (D*IDW-1 downto 0); inter : out std_logic_vector (D-1 downto 0) ); end entity; architecture rtl of gridCube is -- Difussion nets for sphere constant and center . signal sK : std_logic_vector ((D+1)*C*W1 - 1 downto 0); signal sVx : std_logic_vector ((D+1)*C*W0 - 1 downto 0); signal sVy : std_logic_vector ((D+1)*C*W0 - 1 downto 0); signal sVz : std_logic_vector ((D+1)*C*W0 - 1 downto 0); begin -- External connections : K constant. sK (C*W1-1 downto 0) <= kInput; kOutput <= sK ((D+1)*C*W1-1 downto D*C*W1-1); -- External connections : Sphere Center. sVx (C*W0-1 downto 0) <= iSphereCenterx; sVy (C*W0-1 downto 0) <= iSphereCentery; sVz (C*W0-1 downto 0) <= iSphereCenterz; oRayx <= sVx ((D+1)*C*W0-1 downto D*C*W0-1); oRayy <= sVy ((D+1)*C*W0-1 downto D*C*W0-1); oRayz <= sVz ((D+1)*C*W0-1 downto D*C*W0-1); gridArray: for i in 0 to D-1 generate gridn: rayxsphereGrid generic map ( IDW = IDW, C = C, W0 = W0, W1 = W1 ); port map ( clk => clk, rst => rst, pipeOn => pipeOn, nxtSphere => nxtSphere, iRayx => iRayx ((i+1)*W0-1 downto i*W0), iRayy => iRayy ((i+1)*W0-1 downto i*W0), iRayz => iRayz ((i+1)*W0-1 downto i*W0), iSphrCenterx => sVx((i+1)*C*W0-1 downto i*C*W0), iSphrCentery => sVy((i+1)*C*W0-1 downto i*C*W0), iSphrCenterz => sVz((i+1)*C*W0-1 downto i*C*W0), oSphrCenterx => sVx((i+2)*C*W0-1 downto (i+1)*C*W0), oSphrCentery => sVy((i+2)*C*W0-1 downto (i+1)*C*W0), oSphrCenterz => sVz((i+2)*C*W0-1 downto (i+1)*C*W0), oRayx => oRayx ((i+1)*W0-1 downto i*W0), oRayy => oRayy ((i+1)*W0-1 downto i*W0), oRayz => oRayz ((i+1)*W0-1 downto i*W0), kInput => sK((i+1)*C*W1-1 downto i*C*W1), kOutput => sK((i+2)*C*W1-1 downto (i+1)*C*W1), refvd => refvd((i+1)*W1-1 downto i*W1), selvd => selvd((i+1)*W1-1 downto i*W1), colid => colid((i+1)*IDW-1 downto i*IDW), inter => inter(i) ); end generate; end rtl;
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