From 09000da701bb8f87ca8d8b73672170d636aab644 Mon Sep 17 00:00:00 2001
From: wheremyfoodat <gponiris2004@gmail.com>
Date: Wed, 21 Sep 2022 03:45:33 +0300
Subject: [PATCH] [GPU/GSP] Get our first command list

---
 include/emulator.hpp          |  2 +-
 include/gpu.hpp               |  4 +++-
 include/services/gsp_gpu.hpp  |  5 +++--
 src/core/services/gsp_gpu.cpp | 16 ++++++++++++++--
 4 files changed, 21 insertions(+), 6 deletions(-)

diff --git a/include/emulator.hpp b/include/emulator.hpp
index a3821d7f..193ea536 100644
--- a/include/emulator.hpp
+++ b/include/emulator.hpp
@@ -30,7 +30,7 @@ class Emulator {
 
 public:
     Emulator() : window(sf::VideoMode(width, height), "Alber", sf::Style::Default, sf::ContextSettings(0, 0, 0, 4, 3)),
-                 kernel(cpu, memory, gpu), cpu(memory, kernel) {
+                 kernel(cpu, memory, gpu), cpu(memory, kernel), gpu(memory) {
         reset();
         window.setActive(true);
     }
diff --git a/include/gpu.hpp b/include/gpu.hpp
index c62ff991..e01a4d1d 100644
--- a/include/gpu.hpp
+++ b/include/gpu.hpp
@@ -1,10 +1,12 @@
 #pragma once
 #include "helpers.hpp"
+#include "memory.hpp"
 
 class GPU {
+	Memory& mem;
 
 public:
-	GPU() {}
+	GPU(Memory& mem) : mem(mem) {}
 	void clearBuffer(u32 startAddress, u32 endAddress, u32 value, u32 control);
 	void reset();
 };
\ No newline at end of file
diff --git a/include/services/gsp_gpu.hpp b/include/services/gsp_gpu.hpp
index e4b2eb35..42e88d8d 100644
--- a/include/services/gsp_gpu.hpp
+++ b/include/services/gsp_gpu.hpp
@@ -26,7 +26,7 @@ class GPUService {
 	// This is the PID of that process
 	u32 privilegedProcess;
 
-	void processCommands();
+	void processCommandBuffer();
 
 	// Service commands
 	void acquireRight(u32 messagePointer);
@@ -37,7 +37,8 @@ class GPUService {
 	void writeHwRegs(u32 messagePointer);
 	void writeHwRegsWithMask(u32 messagePointer);
 
-	// GPU commands processed via TriggerCmdReqQueue
+	// GSP commands processed via TriggerCmdReqQueue
+	void processCommandList(u32* cmd);
 	void memoryFill(u32* cmd);
 
 public:
diff --git a/src/core/services/gsp_gpu.cpp b/src/core/services/gsp_gpu.cpp
index 9d5d9ace..c7b31810 100644
--- a/src/core/services/gsp_gpu.cpp
+++ b/src/core/services/gsp_gpu.cpp
@@ -16,6 +16,7 @@ namespace ServiceCommands {
 // Commands written to shared memory and processed by TriggerCmdReqQueue
 namespace GPUCommands {
 	enum : u32 {
+		ProcessCommandList = 1,
 		MemoryFill = 2
 	};
 }
@@ -186,14 +187,14 @@ void GPUService::setLCDForceBlack(u32 messagePointer) {
 }
 
 void GPUService::triggerCmdReqQueue(u32 messagePointer) {
-	processCommands();
+	processCommandBuffer();
 	mem.write32(messagePointer + 4, Result::Success);
 }
 
 #include <chrono>
 #include <thread>
 using namespace std::chrono_literals;
-void GPUService::processCommands() {
+void GPUService::processCommandBuffer() {
 	if (sharedMem == nullptr) [[unlikely]] { // Shared memory hasn't been set up yet
 		return;
 	}
@@ -211,6 +212,7 @@ void GPUService::processCommands() {
 		while (commandsLeft != 0) {
 			u32 cmdID = cmd[0] & 0xff;
 			switch (cmdID) {
+				case GPUCommands::ProcessCommandList: processCommandList(cmd); break;
 				case GPUCommands::MemoryFill: memoryFill(cmd); break;
 				default: Helpers::panic("GSP::GPU::ProcessCommands: Unknown cmd ID %d", cmdID);
 			}
@@ -243,4 +245,14 @@ void GPUService::memoryFill(u32* cmd) {
 	if (start1 != 0) {
 		gpu.clearBuffer(start1, end1, value1, control1);
 	}
+}
+
+// Actually send command list (aka display list) to GPU
+void GPUService::processCommandList(u32* cmd) {
+	u32 address = cmd[1]; // Buffer address
+	u32 size = cmd[2]; // Buffer size
+	bool updateGas = cmd[3] == 1; // Update gas additive blend results (0 = don't update, 1 = update)
+	bool flushBuffer = cmd[7] == 1; // Flush buffer (0 = don't flush, 1 = flush)
+
+	Helpers::panic("GPU::GSP::processCommandList. Address: %08X, size: %08X", address, size);
 }
\ No newline at end of file