| 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 | #include "DisplayListParser.h" |
| 23 | #include "Memory.h" |
| 24 | #include "GBI.h" |
| 25 | #include "RSP.h" |
| 26 | #include "RDP.h" |
| 27 | #include "OpenGLRenderer.h" |
| 28 | #include "GBIDefs.h" |
| 29 | |
| 30 | //----------------------------------------------------------------------------- |
| 31 | //* Task |
| 32 | //! Definition of tasks that needs to be performed by the RSP |
| 33 | //! Used to process the dlist by the RSP (Reality Signal Processor) |
| 34 | //! Placed in DMEM at adress 0x04000fc0 |
| 35 | //----------------------------------------------------------------------------- |
| 36 | typedef struct |
| 37 | { |
| 38 | unsigned int type; |
| 39 | unsigned int flags; |
| 40 | unsigned int ucode_boot; |
| 41 | unsigned int ucode_boot_size; |
| 42 | unsigned int ucode; |
| 43 | unsigned int ucode_size; |
| 44 | unsigned int ucode_data; |
| 45 | unsigned int ucode_data_size; |
| 46 | unsigned int dram_stack; |
| 47 | unsigned int dram_stack_size; |
| 48 | unsigned int output_buff; |
| 49 | unsigned int output_buff_size; |
| 50 | unsigned int data_ptr; |
| 51 | unsigned int data_size; |
| 52 | unsigned int yield_data_ptr; |
| 53 | unsigned int yield_data_size; |
| 54 | } Task_t; |
| 55 | |
| 56 | typedef union { |
| 57 | Task_t t; |
| 58 | unsigned long long force_structure_alignment; |
| 59 | } Task; |
| 60 | |
| 61 | //----------------------------------------------------------------------------- |
| 62 | //! Constructor |
| 63 | //----------------------------------------------------------------------------- |
| 64 | DisplayListParser::DisplayListParser() |
| 65 | { |
| 66 | } |
| 67 | |
| 68 | //----------------------------------------------------------------------------- |
| 69 | //! Destructor |
| 70 | //----------------------------------------------------------------------------- |
| 71 | DisplayListParser::~DisplayListParser() |
| 72 | { |
| 73 | } |
| 74 | |
| 75 | //----------------------------------------------------------------------------- |
| 76 | //! Initialize |
| 77 | //----------------------------------------------------------------------------- |
| 78 | bool DisplayListParser::initialize(RSP* rsp, RDP* rdp, GBI* gbi, Memory* memory) |
| 79 | { |
| 80 | //Save pointers |
| 81 | m_rsp = rsp; |
| 82 | m_rdp = rdp; |
| 83 | m_gbi = gbi; |
| 84 | m_memory = memory; |
| 85 | |
| 86 | //Reset display list |
| 87 | m_DListStackPointer = 0; |
| 88 | for (int i=0; i<MAX_DL_STACK_SIZE; ++i) |
| 89 | { |
| 90 | m_DlistStack[i].pc = 0; |
| 91 | m_DlistStack[i].countdown = MAX_DL_COUNT; |
| 92 | } |
| 93 | return true; |
| 94 | } |
| 95 | |
| 96 | //----------------------------------------------------------------------------- |
| 97 | //* Process Display List |
| 98 | //! Parses the display list |
| 99 | //----------------------------------------------------------------------------- |
| 100 | void DisplayListParser::processDisplayList() |
| 101 | { |
| 102 | Task* task = (Task*)( m_memory->getDMEM(TASK_ADDRESS_RELATIVE_DMEM)); |
| 103 | |
| 104 | |
| 105 | //Select UCode |
| 106 | m_gbi->selectUCode(task->t.ucode, task->t.ucode_data, task->t.ucode_size, task->t.ucode_data_size); |
| 107 | |
| 108 | //Parse DList |
| 109 | m_DListStackPointer = 0; |
| 110 | m_DlistStack[m_DListStackPointer].pc = (unsigned int)task->t.data_ptr; |
| 111 | m_DlistStack[m_DListStackPointer].countdown = MAX_DL_COUNT; |
| 112 | |
| 113 | // The main loop |
| 114 | while( m_DListStackPointer >= 0 ) |
| 115 | { |
| 116 | //Cast memory pointer |
| 117 | //uint32* RDRAMu32 = (unsigned int*)graphicsInfo.RDRAM; |
| 118 | unsigned int* RDRAMu32 = m_memory->getRDRAMint32(); |
| 119 | |
| 120 | //Get ucode argument from memory (vertices, textures, matrices...) |
| 121 | MicrocodeArgument* ucodeArg = (MicrocodeArgument*)&RDRAMu32[(m_DlistStack[m_DListStackPointer].pc>>2)]; |
| 122 | |
| 123 | //Increment program counter |
| 124 | m_DlistStack[m_DListStackPointer].pc += 8; |
| 125 | |
| 126 | //Call function to execute command |
| 127 | m_gbi->m_cmds[(ucodeArg->cmd)](ucodeArg); |
| 128 | |
| 129 | //Get next command |
| 130 | MicrocodeArgument* ucodeNext = (MicrocodeArgument*)&RDRAMu32[(m_DlistStack[m_DListStackPointer].pc>>2)]; |
| 131 | |
| 132 | //If this was a rendering command |
| 133 | if ( ucodeArg->cmd == GBI::G_TRI1 || |
| 134 | ucodeArg->cmd == GBI::G_TRI2 || |
| 135 | ucodeArg->cmd == GBI::G_TRI4 || |
| 136 | ucodeArg->cmd == GBI::G_QUAD || |
| 137 | ucodeArg->cmd == GBI::G_DMA_TRI ) |
| 138 | { |
| 139 | //If next is not a rendering command |
| 140 | if ( ucodeNext->cmd != GBI::G_TRI1 && |
| 141 | ucodeNext->cmd != GBI::G_TRI2 && |
| 142 | ucodeNext->cmd != GBI::G_TRI4 && |
| 143 | ucodeNext->cmd != GBI::G_QUAD && |
| 144 | ucodeNext->cmd != GBI::G_DMA_TRI ) |
| 145 | { |
| 146 | OpenGLRenderer::getSingleton().render(); |
| 147 | } |
| 148 | } |
| 149 | |
| 150 | //?? |
| 151 | if ( m_DListStackPointer >= 0 && --m_DlistStack[m_DListStackPointer].countdown < 0 ) |
| 152 | { |
| 153 | m_DListStackPointer--; |
| 154 | } |
| 155 | } |
| 156 | |
| 157 | //Trigger interupts |
| 158 | m_rdp->triggerInterrupt(); |
| 159 | m_rsp->triggerInterrupt(); |
| 160 | } |
| 161 | |
| 162 | //----------------------------------------------------------------------------- |
| 163 | //! Get next word |
| 164 | //----------------------------------------------------------------------------- |
| 165 | unsigned int DisplayListParser::getNextWord() |
| 166 | { |
| 167 | unsigned int word = *(unsigned int*)m_memory->getRDRAM( this->getPC() + 4 ); |
| 168 | this->increasePC(8); |
| 169 | return word; |
| 170 | } |
| 171 | |
| 172 | //----------------------------------------------------------------------------- |
| 173 | //!< @param segmentAddress Used to retrive RDRAM address witch is used to set program counter |
| 174 | //----------------------------------------------------------------------------- |
| 175 | void DisplayListParser::displayList(unsigned int segmentAddress) |
| 176 | { |
| 177 | unsigned int address = m_memory->getRDRAMAddress(segmentAddress); |
| 178 | |
| 179 | if ( (address + 8) > m_memory->getRDRAMSize() ) { |
| 180 | return; |
| 181 | } |
| 182 | |
| 183 | if ( m_DListStackPointer < (MAX_DL_STACK_SIZE - 1)) |
| 184 | { |
| 185 | m_DListStackPointer++; |
| 186 | m_DlistStack[m_DListStackPointer].pc = address; |
| 187 | m_DlistStack[m_DListStackPointer].countdown = MAX_DL_COUNT; |
| 188 | } |
| 189 | } |
| 190 | |
| 191 | //----------------------------------------------------------------------------- |
| 192 | //! Branch Display List |
| 193 | //----------------------------------------------------------------------------- |
| 194 | void DisplayListParser::branchDisplayList(unsigned int dl) |
| 195 | { |
| 196 | unsigned int address = m_memory->getRDRAMAddress( dl ); |
| 197 | |
| 198 | if ( (address + 8) > m_memory->getRDRAMSize() ) { |
| 199 | return; |
| 200 | } |
| 201 | |
| 202 | m_DlistStack[m_DListStackPointer].pc = address; |
| 203 | m_DlistStack[m_DListStackPointer].countdown = MAX_DL_COUNT; |
| 204 | } |
| 205 | |
| 206 | //----------------------------------------------------------------------------- |
| 207 | //! DMA Display List |
| 208 | //----------------------------------------------------------------------------- |
| 209 | void DisplayListParser::DMADisplayList( unsigned int w0, unsigned int w1 ) |
| 210 | { |
| 211 | //unsigned int dwAddr = (w1);//RSPSegmentAddr((gfx->words.w1)); |
| 212 | unsigned int dwAddr = m_memory->getRDRAMAddress(w1);//RSPSegmentAddr((gfx->words.w1)); |
| 213 | |
| 214 | { |
| 215 | m_DListStackPointer++; |
| 216 | m_DlistStack[m_DListStackPointer].pc = dwAddr; |
| 217 | m_DlistStack[m_DListStackPointer].countdown = (((w0)>>16)&0xFF); |
| 218 | } |
| 219 | } |