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@ -56,7 +56,17 @@ static inline void WritePicaReg(u32 id, u32 value, u32 mask) {
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// Trigger IRQ
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case PICA_REG_INDEX(trigger_irq):
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GSP_GPU::SignalInterrupt(GSP_GPU::InterruptId::P3D);
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return;
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break;
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case PICA_REG_INDEX_WORKAROUND(command_buffer.trigger[0], 0x23c):
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case PICA_REG_INDEX_WORKAROUND(command_buffer.trigger[1], 0x23d):
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{
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unsigned index = id - PICA_REG_INDEX(command_buffer.trigger[0]);
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u32* head_ptr = (u32*)Memory::GetPhysicalPointer(regs.command_buffer.GetPhysicalAddress(index));
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g_state.cmd_list.head_ptr = g_state.cmd_list.current_ptr = head_ptr;
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g_state.cmd_list.length = regs.command_buffer.GetSize(index) / sizeof(u32);
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break;
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}
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// It seems like these trigger vertex rendering
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case PICA_REG_INDEX(trigger_draw):
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@ -363,38 +373,34 @@ static inline void WritePicaReg(u32 id, u32 value, u32 mask) {
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g_debug_context->OnEvent(DebugContext::Event::CommandProcessed, reinterpret_cast<void*>(&id));
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}
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static std::ptrdiff_t ExecuteCommandBlock(const u32* first_command_word) {
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const CommandHeader& header = *(const CommandHeader*)(&first_command_word[1]);
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u32* read_pointer = (u32*)first_command_word;
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const u32 write_mask = ((header.parameter_mask & 0x1) ? (0xFFu << 0) : 0u) |
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((header.parameter_mask & 0x2) ? (0xFFu << 8) : 0u) |
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((header.parameter_mask & 0x4) ? (0xFFu << 16) : 0u) |
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((header.parameter_mask & 0x8) ? (0xFFu << 24) : 0u);
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WritePicaReg(header.cmd_id, *read_pointer, write_mask);
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read_pointer += 2;
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for (unsigned int i = 1; i < 1+header.extra_data_length; ++i) {
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u32 cmd = header.cmd_id + ((header.group_commands) ? i : 0);
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WritePicaReg(cmd, *read_pointer, write_mask);
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++read_pointer;
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}
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// align read pointer to 8 bytes
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if ((first_command_word - read_pointer) % 2)
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++read_pointer;
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return read_pointer - first_command_word;
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}
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void ProcessCommandList(const u32* list, u32 size) {
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u32* read_pointer = (u32*)list;
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u32 list_length = size / sizeof(u32);
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g_state.cmd_list.head_ptr = g_state.cmd_list.current_ptr = list;
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g_state.cmd_list.length = size / sizeof(u32);
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while (read_pointer < list + list_length) {
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read_pointer += ExecuteCommandBlock(read_pointer);
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while (g_state.cmd_list.current_ptr < g_state.cmd_list.head_ptr + g_state.cmd_list.length) {
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// Expand a 4-bit mask to 4-byte mask, e.g. 0b0101 -> 0x00FF00FF
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static const u32 expand_bits_to_bytes[] = {
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0x00000000, 0x000000ff, 0x0000ff00, 0x0000ffff,
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0x00ff0000, 0x00ff00ff, 0x00ffff00, 0x00ffffff,
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0xff000000, 0xff0000ff, 0xff00ff00, 0xff00ffff,
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0xffff0000, 0xffff00ff, 0xffffff00, 0xffffffff
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};
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// Align read pointer to 8 bytes
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if ((g_state.cmd_list.head_ptr - g_state.cmd_list.current_ptr) % 2 != 0)
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++g_state.cmd_list.current_ptr;
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u32 value = *g_state.cmd_list.current_ptr++;
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const CommandHeader header = { *g_state.cmd_list.current_ptr++ };
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const u32 write_mask = expand_bits_to_bytes[header.parameter_mask];
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u32 cmd = header.cmd_id;
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WritePicaReg(cmd, value, write_mask);
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for (unsigned i = 0; i < header.extra_data_length; ++i) {
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u32 cmd = header.cmd_id + (header.group_commands ? i + 1 : 0);
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WritePicaReg(cmd, *g_state.cmd_list.current_ptr++, write_mask);
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}
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}
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}
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