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/engines/maxwell_3d.cpp | 52 +++++++++++++++++++++++++++++++++++
 1 file changed, 52 insertions(+)

(limited to 'src/video_core/engines/maxwell_3d.cpp')

diff --git a/src/video_core/engines/maxwell_3d.cpp b/src/video_core/engines/maxwell_3d.cpp
index 2824ed707..879ce542a 100644
--- a/src/video_core/engines/maxwell_3d.cpp
+++ b/src/video_core/engines/maxwell_3d.cpp
@@ -280,6 +280,36 @@ void Maxwell3D::CallMethod(const GPU::MethodCall& method_call) {
     }
 }
 
+void Maxwell3D::CallMultiMethod(u32 method, const u32* base_start, u32 amount, u32 methods_pending) {
+    switch (method) {
+        case MAXWELL3D_REG_INDEX(const_buffer.cb_data[0]):
+        case MAXWELL3D_REG_INDEX(const_buffer.cb_data[1]):
+        case MAXWELL3D_REG_INDEX(const_buffer.cb_data[2]):
+        case MAXWELL3D_REG_INDEX(const_buffer.cb_data[3]):
+        case MAXWELL3D_REG_INDEX(const_buffer.cb_data[4]):
+        case MAXWELL3D_REG_INDEX(const_buffer.cb_data[5]):
+        case MAXWELL3D_REG_INDEX(const_buffer.cb_data[6]):
+        case MAXWELL3D_REG_INDEX(const_buffer.cb_data[7]):
+        case MAXWELL3D_REG_INDEX(const_buffer.cb_data[8]):
+        case MAXWELL3D_REG_INDEX(const_buffer.cb_data[9]):
+        case MAXWELL3D_REG_INDEX(const_buffer.cb_data[10]):
+        case MAXWELL3D_REG_INDEX(const_buffer.cb_data[11]):
+        case MAXWELL3D_REG_INDEX(const_buffer.cb_data[12]):
+        case MAXWELL3D_REG_INDEX(const_buffer.cb_data[13]):
+        case MAXWELL3D_REG_INDEX(const_buffer.cb_data[14]):
+        case MAXWELL3D_REG_INDEX(const_buffer.cb_data[15]): {
+            ProcessCBMultiData(method, base_start, amount);
+            break;
+        }
+        default: {
+            for (std::size_t i = 0; i < amount; i++) {
+                CallMethod({method, base_start[i], 0, methods_pending - static_cast<u32>(i)});
+            }
+        }
+    }
+
+}
+
 void Maxwell3D::StepInstance(const MMEDrawMode expected_mode, const u32 count) {
     if (mme_draw.current_mode == MMEDrawMode::Undefined) {
         if (mme_draw.gl_begin_consume) {
@@ -570,6 +600,28 @@ void Maxwell3D::StartCBData(u32 method) {
     ProcessCBData(regs.const_buffer.cb_data[cb_data_state.id]);
 }
 
+void Maxwell3D::ProcessCBMultiData(u32 method, const u32* start_base, u32 amount) {
+    if (cb_data_state.current != method) {
+        if (cb_data_state.current != null_cb_data) {
+            FinishCBData();
+        }
+        constexpr u32 first_cb_data = MAXWELL3D_REG_INDEX(const_buffer.cb_data[0]);
+        cb_data_state.start_pos = regs.const_buffer.cb_pos;
+        cb_data_state.id = method - first_cb_data;
+        cb_data_state.current = method;
+        cb_data_state.counter = 0;
+    }
+    const std::size_t id = cb_data_state.id;
+    const std::size_t size = amount;
+    std::size_t i = 0;
+    for (; i < size; i++) {
+        cb_data_state.buffer[id][cb_data_state.counter] = start_base[i];
+        cb_data_state.counter++;
+    }
+    // Increment the current buffer position.
+    regs.const_buffer.cb_pos = regs.const_buffer.cb_pos + 4 * amount;
+}
+
 void Maxwell3D::FinishCBData() {
     // Write the input value to the current const buffer at the current position.
     const GPUVAddr buffer_address = regs.const_buffer.BufferAddress();
-- 
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