GSP: Trigger GPU interrupts at more accurate locations.

src/core/hle/service/gsp_gpu.cpp

@@ -173,6 +173,7 @@ static void RegisterInterruptRelayQueue(Service::Interface* self) {
  * Signals that the specified interrupt type has occurred to userland code
  * @param interrupt_id ID of interrupt that is being signalled
  * @todo This should probably take a thread_id parameter and only signal this thread?
+ * @todo This probably does not belong in the GSP module, instead move to video_core
  */
 void SignalInterrupt(InterruptId interrupt_id) {
     if (0 == g_interrupt_event) {
@@ -211,6 +212,7 @@ static void ExecuteCommand(const Command& command, u32 thread_id) {
         memcpy(Memory::GetPointer(command.dma_request.dest_address),
                Memory::GetPointer(command.dma_request.source_address),
                command.dma_request.size);
+        SignalInterrupt(InterruptId::DMA);
         break;
 
     // ctrulib homebrew sends all relevant command list data with this command,
@@ -219,13 +221,13 @@ static void ExecuteCommand(const Command& command, u32 thread_id) {
     case CommandId::SET_COMMAND_LIST_LAST:
     {
         auto& params = command.set_command_list_last;
+
         WriteGPURegister(GPU_REG_INDEX(command_processor_config.address), Memory::VirtualToPhysicalAddress(params.address) >> 3);
         WriteGPURegister(GPU_REG_INDEX(command_processor_config.size), params.size);
 
         // TODO: Not sure if we are supposed to always write this .. seems to trigger processing though
         WriteGPURegister(GPU_REG_INDEX(command_processor_config.trigger), 1);
 
-        SignalInterrupt(InterruptId::P3D);
         break;
     }
 
@@ -243,6 +245,8 @@ static void ExecuteCommand(const Command& command, u32 thread_id) {
         WriteGPURegister(GPU_REG_INDEX(memory_fill_config[1].address_end), Memory::VirtualToPhysicalAddress(params.end2) >> 3);
         WriteGPURegister(GPU_REG_INDEX(memory_fill_config[1].size), params.end2 - params.start2);
         WriteGPURegister(GPU_REG_INDEX(memory_fill_config[1].value), params.value2);
+
+        SignalInterrupt(InterruptId::PSC0);
         break;
     }
 
@@ -256,14 +260,9 @@ static void ExecuteCommand(const Command& command, u32 thread_id) {
         WriteGPURegister(GPU_REG_INDEX(display_transfer_config.flags), params.flags);
         WriteGPURegister(GPU_REG_INDEX(display_transfer_config.trigger), 1);
 
-        // TODO(bunnei): Signalling all of these interrupts here is totally wrong, but it seems to
-        // work well enough for running demos. Need to figure out how these all work and trigger
-        // them correctly.
-        SignalInterrupt(InterruptId::PSC0);
+        // TODO(bunnei): Determine if these interrupts should be signalled here.
         SignalInterrupt(InterruptId::PSC1);
         SignalInterrupt(InterruptId::PPF);
-        SignalInterrupt(InterruptId::P3D);
-        SignalInterrupt(InterruptId::DMA);
 
         // Update framebuffer information if requested
         for (int screen_id = 0; screen_id < 2; ++screen_id) {

src/video_core/command_processor.cpp

@@ -8,6 +8,7 @@
 #include "pica.h"
 #include "primitive_assembly.h"
 #include "vertex_shader.h"
+#include "core/hle/service/gsp_gpu.h"
 
 #include "debug_utils/debug_utils.h"
 
@@ -40,6 +41,11 @@ static inline void WritePicaReg(u32 id, u32 value, u32 mask) {
     DebugUtils::OnPicaRegWrite(id, registers[id]);
 
     switch(id) {
+        // Trigger IRQ
+        case PICA_REG_INDEX(trigger_irq):
+            GSP_GPU::SignalInterrupt(GSP_GPU::InterruptId::P3D);
+            return;
+
         // It seems like these trigger vertex rendering
         case PICA_REG_INDEX(trigger_draw):
         case PICA_REG_INDEX(trigger_draw_indexed):

src/video_core/pica.h

@@ -45,10 +45,16 @@ struct Regs {
 #define INSERT_PADDING_WORDS_HELPER2(x, y) INSERT_PADDING_WORDS_HELPER1(x, y)
 #define INSERT_PADDING_WORDS(num_words) u32 INSERT_PADDING_WORDS_HELPER2(pad, __LINE__)[(num_words)];
 
-    INSERT_PADDING_WORDS(0x41);
+    INSERT_PADDING_WORDS(0x10);
+
+    u32 trigger_irq;
+
+    INSERT_PADDING_WORDS(0x30);
 
     BitField<0, 24, u32> viewport_size_x;
+
     INSERT_PADDING_WORDS(0x1);
+
     BitField<0, 24, u32> viewport_size_y;
 
     INSERT_PADDING_WORDS(0x9);
@@ -544,6 +550,7 @@ struct Regs {
                     map.insert({i, #name + std::string("+") + std::to_string(i-PICA_REG_INDEX(name))});       \
             } while(false)
 
+        ADD_FIELD(trigger_irq);
         ADD_FIELD(viewport_size_x);
         ADD_FIELD(viewport_size_y);
         ADD_FIELD(viewport_depth_range);
@@ -607,6 +614,7 @@ private:
 #ifndef _MSC_VER
 #define ASSERT_REG_POSITION(field_name, position) static_assert(offsetof(Regs, field_name) == position * 4, "Field "#field_name" has invalid position")
 
+ASSERT_REG_POSITION(trigger_irq, 0x10);
 ASSERT_REG_POSITION(viewport_size_x, 0x41);
 ASSERT_REG_POSITION(viewport_size_y, 0x43);
 ASSERT_REG_POSITION(viewport_depth_range, 0x4d);