From 2c059ce55e5dda00448522230c9a695285e15615 Mon Sep 17 00:00:00 2001
From: fallenoak <git@fallenoak.me>
Date: Sat, 11 Mar 2023 13:00:26 -0600
Subject: [PATCH] feat(gx): handle alpha device states in d3d backend

---
 src/gx/d3d/CGxDeviceD3d.cpp | 25 ++++++++++++++++++++++++-
 1 file changed, 24 insertions(+), 1 deletion(-)

diff --git a/src/gx/d3d/CGxDeviceD3d.cpp b/src/gx/d3d/CGxDeviceD3d.cpp
index 56d622f..1cf7000 100644
--- a/src/gx/d3d/CGxDeviceD3d.cpp
+++ b/src/gx/d3d/CGxDeviceD3d.cpp
@@ -459,7 +459,30 @@ void CGxDeviceD3d::Draw(CGxBatch* batch, int32_t indexed) {
 }
 
 void CGxDeviceD3d::DsSet(EDeviceState state, uint32_t val) {
-    // TODO
+    if (this->m_deviceStates[state] == val) {
+        return;
+    }
+
+    switch (state) {
+    // TODO handle other device states
+
+    case Ds_AlphaBlendEnable: {
+        this->m_d3dDevice->SetRenderState(D3DRS_ALPHABLENDENABLE, val);
+        break;
+    }
+
+    case Ds_AlphaTestEnable: {
+        this->m_d3dDevice->SetRenderState(D3DRS_ALPHATESTENABLE, val);
+        break;
+    }
+
+    case Ds_AlphaRef: {
+        this->m_d3dDevice->SetRenderState(D3DRS_ALPHAREF, val);
+        break;
+    }
+    }
+
+    this->m_deviceStates[state] = val;
 }
 
 char* CGxDeviceD3d::IBufLock(CGxBuf* buf) {