VideoCommon: add logic to handle a GraphicsMod while Dolphin is running

1 files changed, 59 insertions, 0 deletions

diff --git a/Source/Core/VideoCommon/GraphicsModSystem/Runtime/Actions/ScaleAction.cpp b/Source/Core/VideoCommon/GraphicsModSystem/Runtime/Actions/ScaleAction.cpp
new file mode 100644
index 0000000000..d0cac24acb
--- /dev/null
+++ b/Source/Core/VideoCommon/GraphicsModSystem/Runtime/Actions/ScaleAction.cpp
@@ -0,0 +1,59 @@
+// Copyright 2022 Dolphin Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "VideoCommon/GraphicsModSystem/Runtime/Actions/ScaleAction.h"
+
+std::unique_ptr<ScaleAction> ScaleAction::Create(const picojson::value& json_data)
+{
+  Common::Vec3 scale;
+  const auto& x = json_data.get("X");
+  if (x.is<double>())
+  {
+    scale.x = static_cast<float>(x.get<double>());
+  }
+
+  const auto& y = json_data.get("Y");
+  if (y.is<double>())
+  {
+    scale.y = static_cast<float>(y.get<double>());
+  }
+
+  const auto& z = json_data.get("Z");
+  if (z.is<double>())
+  {
+    scale.z = static_cast<float>(z.get<double>());
+  }
+  return std::make_unique<ScaleAction>(scale);
+}
+
+ScaleAction::ScaleAction(Common::Vec3 scale) : m_scale(scale)
+{
+}
+
+void ScaleAction::OnEFB(bool*, u32 texture_width, u32 texture_height, u32* scaled_width,
+                        u32* scaled_height)
+{
+  if (scaled_width && m_scale.x > 0)
+    *scaled_width = texture_width * m_scale.x;
+
+  if (scaled_height && m_scale.y > 0)
+    *scaled_height = texture_height * m_scale.y;
+}
+
+void ScaleAction::OnProjection(Common::Matrix44* matrix)
+{
+  if (!matrix)
+    return;
+  auto& the_matrix = *matrix;
+  the_matrix.data[0] = the_matrix.data[0] * m_scale.x;
+  the_matrix.data[5] = the_matrix.data[5] * m_scale.y;
+}
+
+void ScaleAction::OnProjectionAndTexture(Common::Matrix44* matrix)
+{
+  if (!matrix)
+    return;
+  auto& the_matrix = *matrix;
+  the_matrix.data[0] = the_matrix.data[0] * m_scale.x;
+  the_matrix.data[5] = the_matrix.data[5] * m_scale.y;
+}