Android #151

renderer_vulkan: adjust window origin and swizzle independently

README.md

@@ -1,3 +1,12 @@
+| Pull Request | Commit | Title | Author | Merged? |
+|----|----|----|----|----|
+| [12271](https://github.com/yuzu-emu/yuzu//pull/12271) | [`9de99839b`](https://github.com/yuzu-emu/yuzu//pull/12271/files) | nce: fix pre-text patch for single modules | [liamwhite](https://github.com/liamwhite/) | Yes |
+
+
+End of merge log. You can find the original README.md below the break.
+
+-----
+
 <!--
 SPDX-FileCopyrightText: 2018 yuzu Emulator Project
 SPDX-License-Identifier: GPL-2.0-or-later

src/core/arm/nce/patcher.cpp

@@ -28,6 +28,8 @@ Patcher::~Patcher() = default;
 
 void Patcher::PatchText(const Kernel::PhysicalMemory& program_image,
                         const Kernel::CodeSet::Segment& code) {
+    // Branch to the first instruction of the module.
+    this->BranchToModule(0);
 
     // Write save context helper function.
     c.l(m_save_context);

src/video_core/renderer_vulkan/vk_rasterizer.cpp

@@ -75,14 +75,20 @@ VkViewport GetViewportState(const Device& device, const Maxwell& regs, size_t in
     const float width = conv(src.scale_x * 2.0f);
     float y = conv(src.translate_y - src.scale_y);
     float height = conv(src.scale_y * 2.0f);
-    bool y_negate = regs.window_origin.mode != Maxwell::WindowOrigin::Mode::UpperLeft;
 
-    if (!device.IsNvViewportSwizzleSupported()) {
-        y_negate = y_negate != (src.swizzle.y == Maxwell::ViewportSwizzle::NegativeY);
+    const bool lower_left = regs.window_origin.mode != Maxwell::WindowOrigin::Mode::UpperLeft;
+    const bool y_negate = !device.IsNvViewportSwizzleSupported() &&
+                          src.swizzle.y == Maxwell::ViewportSwizzle::NegativeY;
+
+    if (lower_left) {
+        // Flip by surface clip height
+        y += conv(static_cast<f32>(regs.surface_clip.height));
+        height = -height;
     }
 
     if (y_negate) {
-        y += conv(static_cast<f32>(regs.surface_clip.height));
+        // Flip by viewport height
+        y += height;
         height = -height;
     }