From 3fedcc2f6e001f0ed1fd791de4f9692570359eef Mon Sep 17 00:00:00 2001
From: Fernando Sahmkow <fsahmkow27@gmail.com>
Date: Mon, 20 Apr 2020 02:16:56 -0400
Subject: DMAPusher: Propagate multimethod writes into the engines.

---
 src/video_core/dma_pusher.cpp | 30 +++++++++++++++++++++---------
 1 file changed, 21 insertions(+), 9 deletions(-)

(limited to 'src/video_core/dma_pusher.cpp')

diff --git a/src/video_core/dma_pusher.cpp b/src/video_core/dma_pusher.cpp
index 324dafdcd..16311f05e 100644
--- a/src/video_core/dma_pusher.cpp
+++ b/src/video_core/dma_pusher.cpp
@@ -71,16 +71,22 @@ bool DmaPusher::Step() {
     gpu.MemoryManager().ReadBlockUnsafe(dma_get, command_headers.data(),
                                         command_list_header.size * sizeof(u32));
 
-    for (const CommandHeader& command_header : command_headers) {
-
-        // now, see if we're in the middle of a command
-        if (dma_state.length_pending) {
-            // Second word of long non-inc methods command - method count
-            dma_state.length_pending = 0;
-            dma_state.method_count = command_header.method_count_;
-        } else if (dma_state.method_count) {
+    for (std::size_t index = 0; index < command_headers.size();) {
+        const CommandHeader& command_header = command_headers[index];
+
+        if (dma_state.method_count) {
             // Data word of methods command
-            CallMethod(command_header.argument);
+            if (dma_state.non_incrementing) {
+                const u32 max_write = static_cast<u32>(
+                    std::min<std::size_t>(index + dma_state.method_count, command_headers.size()) -
+                    index);
+                CallMultiMethod(&command_header.argument, max_write);
+                dma_state.method_count -= max_write;
+                index += max_write;
+                continue;
+            } else {
+                CallMethod(command_header.argument);
+            }
 
             if (!dma_state.non_incrementing) {
                 dma_state.method++;
@@ -120,6 +126,7 @@ bool DmaPusher::Step() {
                 break;
             }
         }
+        index++;
     }
 
     if (!non_main) {
@@ -140,4 +147,9 @@ void DmaPusher::CallMethod(u32 argument) const {
     gpu.CallMethod({dma_state.method, argument, dma_state.subchannel, dma_state.method_count});
 }
 
+void DmaPusher::CallMultiMethod(const u32* base_start, u32 num_methods) const {
+    gpu.CallMultiMethod(dma_state.method, dma_state.subchannel, base_start, num_methods,
+                        dma_state.method_count);
+}
+
 } // namespace Tegra
-- 
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