CMakeLists: Specify -Wextra on linux builds

Allows reporting more cases where logic errors may exist, such as
implicit fallthrough cases, etc.

We currently ignore unused parameters, since we currently have many
cases where this is intentional (virtual interfaces).

While we're at it, we can also tidy up any existing code that causes
warnings. This also uncovered a few bugs as well.

1 files changed, 8 insertions, 3 deletions

diff --git a/src/video_core/shader/decode/image.cpp b/src/video_core/shader/decode/image.cpp
index 0dd7a1196c..85ee9aa5e7 100644
--- a/src/video_core/shader/decode/image.cpp
+++ b/src/video_core/shader/decode/image.cpp
@@ -352,8 +352,10 @@ u32 ShaderIR::DecodeImage(NodeBlock& bb, u32 pc) {
                         registry.ObtainBoundSampler(static_cast<u32>(instr.image.index.Value()));
                 } else {
                     const Node image_register = GetRegister(instr.gpr39);
-                    const auto [base_image, buffer, offset] = TrackCbuf(
-                        image_register, global_code, static_cast<s64>(global_code.size()));
+                    const auto result = TrackCbuf(image_register, global_code,
+                                                  static_cast<s64>(global_code.size()));
+                    const auto buffer = std::get<1>(result);
+                    const auto offset = std::get<2>(result);
                     descriptor = registry.ObtainBindlessSampler(buffer, offset);
                 }
                 if (!descriptor) {
@@ -497,9 +499,12 @@ Image& ShaderIR::GetImage(Tegra::Shader::Image image, Tegra::Shader::ImageType t
 
 Image& ShaderIR::GetBindlessImage(Tegra::Shader::Register reg, Tegra::Shader::ImageType type) {
     const Node image_register = GetRegister(reg);
-    const auto [base_image, buffer, offset] =
+    const auto result =
         TrackCbuf(image_register, global_code, static_cast<s64>(global_code.size()));
 
+    const auto buffer = std::get<1>(result);
+    const auto offset = std::get<2>(result);
+
     const auto it =
         std::find_if(std::begin(used_images), std::end(used_images),
                      [buffer = buffer, offset = offset](const Image& entry) {