| 1 | /****************************************************************************** |
| 2 | * Arachnoid Graphics Plugin for Mupen64Plus |
| 3 | * http://bitbucket.org/wahrhaft/mupen64plus-video-arachnoid/ |
| 4 | * |
| 5 | * Copyright (C) 2007 Kristofer Karlsson, Rickard Niklasson |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or |
| 8 | * modify it under the terms of the GNU General Public License |
| 9 | * as published by the Free Software Foundation; either version 2 |
| 10 | * of the License, or (at your option) any later version. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License |
| 18 | * along with this program; if not, write to the Free Software |
| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 20 | *****************************************************************************/ |
| 21 | |
| 22 | #ifndef DISPLAYLIST_PARSER_H_ |
| 23 | #define DISPLAYLIST_PARSER_H_ |
| 24 | |
| 25 | //Forward declaration |
| 26 | class Memory; |
| 27 | class RSP; |
| 28 | class RDP; |
| 29 | class GBI; |
| 30 | |
| 31 | #define MAX_DL_COUNT 100000 //!< Maximum display list count |
| 32 | #define TASK_ADDRESS_RELATIVE_DMEM 0x0FC0 |
| 33 | //----------------------------------------------------------------------------- |
| 34 | //! The display list PC stack. |
| 35 | //----------------------------------------------------------------------------- |
| 36 | typedef struct |
| 37 | { |
| 38 | unsigned int pc; |
| 39 | int countdown; |
| 40 | } DListStack; |
| 41 | |
| 42 | //***************************************************************************** |
| 43 | //* DisplayListParser |
| 44 | //! Class for parsing and managing the displaylist |
| 45 | //***************************************************************************** |
| 46 | class DisplayListParser |
| 47 | { |
| 48 | public: |
| 49 | //Constructor / Destructor |
| 50 | DisplayListParser(); |
| 51 | ~DisplayListParser(); |
| 52 | |
| 53 | //Initialize |
| 54 | bool initialize(RSP* rsp, RDP* rdp, GBI* gbi, Memory* memory); |
| 55 | |
| 56 | //Process/Parse the display list |
| 57 | void processDisplayList(); |
| 58 | |
| 59 | //Display list funcitons |
| 60 | void branchDisplayList(unsigned int dl); |
| 61 | void displayList(unsigned int segmentAddress); |
| 62 | void DMADisplayList( unsigned int w0, unsigned int w1 ); |
| 63 | //! End display list |
| 64 | void endDisplayList() { --m_DListStackPointer; } |
| 65 | |
| 66 | //! Get Program Counter |
| 67 | unsigned int getPC() { return m_DlistStack[m_DListStackPointer].pc; } |
| 68 | |
| 69 | //! Set Program Counter |
| 70 | void setPC(unsigned int pc) { m_DlistStack[m_DListStackPointer].pc = pc; } |
| 71 | |
| 72 | //! Increase Program Counter |
| 73 | void increasePC(int increment) { m_DlistStack[m_DListStackPointer].pc += increment; } |
| 74 | |
| 75 | //Get Next Word |
| 76 | unsigned int getNextWord(); |
| 77 | |
| 78 | //! Get Current Display List |
| 79 | DListStack& getCurrentDlist() { return m_DlistStack[m_DListStackPointer]; } |
| 80 | |
| 81 | private: |
| 82 | |
| 83 | //Pointers |
| 84 | RSP* m_rsp; //! Pointer to Reality Signal Processor |
| 85 | RDP* m_rdp; //! Pointer to Reality Drawing Processor |
| 86 | GBI* m_gbi; //! Pointer to Graphics Binary Interface |
| 87 | Memory* m_memory; //! Pointer to Memory |
| 88 | |
| 89 | //Stack used for processing the Display List |
| 90 | int m_DListStackPointer; //!< Current size of Display List stack |
| 91 | static const int MAX_DL_STACK_SIZE = 32; //!< Maximum size of Display List stack |
| 92 | DListStack m_DlistStack[MAX_DL_STACK_SIZE]; //!< Stack used for processing the Display List |
| 93 | }; |
| 94 | |
| 95 | #endif |