From a8327ffc92eed8f5901a7dce08648de36fd50f6c Mon Sep 17 00:00:00 2001
From: elijah-thomas774 <elijahthomas774@gmail.com>
Date: Mon, 24 Mar 2025 21:28:54 -0400
Subject: [PATCH] Im tired

---
 include/egg/gfx/eggCapTexture.h      |  4 ++
 include/egg/gfx/eggCpuTexture.h      |  4 ++
 include/egg/gfx/eggPostEffectBase.h  |  2 +-
 src/egg/gfx/eggPostEffectMaskDOF.cpp |  7 +--
 src/egg/gfx/eggScreenEffectBlur.cpp  | 64 +++++++++++++++++++++++++++-
 5 files changed, 75 insertions(+), 6 deletions(-)

diff --git a/include/egg/gfx/eggCapTexture.h b/include/egg/gfx/eggCapTexture.h
index bf6d1f7b..955504eb 100644
--- a/include/egg/gfx/eggCapTexture.h
+++ b/include/egg/gfx/eggCapTexture.h
@@ -38,6 +38,10 @@ public:
         mClearColor = clr;
     }
 
+    void setCopyFilter(const CopyFilter &filt) {
+        mCopyFilterArg = filt;
+    }
+
 private:
     /* 0x18 */ u8 mCapFlags;
     /* 0x19 */ GXColor mClearColor;
diff --git a/include/egg/gfx/eggCpuTexture.h b/include/egg/gfx/eggCpuTexture.h
index 11096550..a3e4db22 100644
--- a/include/egg/gfx/eggCpuTexture.h
+++ b/include/egg/gfx/eggCpuTexture.h
@@ -68,6 +68,10 @@ public:
     u16 getHeight() const {
         return mHeight;
     }
+    // Needed for PostEffectMaskDOF::setUpGradation
+    u16 getHeight2() {
+        return mHeight;
+    }
     void setHeight(u16 h) {
         mHeight = h;
     }
diff --git a/include/egg/gfx/eggPostEffectBase.h b/include/egg/gfx/eggPostEffectBase.h
index 7a2cfc0d..16f85642 100644
--- a/include/egg/gfx/eggPostEffectBase.h
+++ b/include/egg/gfx/eggPostEffectBase.h
@@ -27,7 +27,7 @@ public:
         return mRotation;
     }
 
-protected:
+public:
     u32 field_0x00;               // at 0x0
     CapTextureWrapper mTex1;      // at 0x4
     CapTextureWrapper mTex2;      // at 0xC
diff --git a/src/egg/gfx/eggPostEffectMaskDOF.cpp b/src/egg/gfx/eggPostEffectMaskDOF.cpp
index fce42b94..59104d51 100644
--- a/src/egg/gfx/eggPostEffectMaskDOF.cpp
+++ b/src/egg/gfx/eggPostEffectMaskDOF.cpp
@@ -68,10 +68,11 @@ void PostEffectMaskDOF::setUpGradation() {
 
     const u16 width = mpCpuTex->getWidth() / 2;
     for (u16 y = 0; y < mpCpuTex->getHeight(); y++) {
-        const f32 fy = ((f32)y / mpCpuTex->getHeight());
+        f32 fy = (f32)y / mpCpuTex->getHeight2();
         for (u16 x = 0; x < width; x++) {
-            f32 fx = (f32)x / width;
-            f32 ratio = fx / (1.f - fy);
+            // Don't even have to use this one!
+            (void)(f32)width;
+            f32 ratio = ((f32)x / width) / (1.f - fy);
 
             if (ratio > 1.f) {
                 ratio = 1.f;
diff --git a/src/egg/gfx/eggScreenEffectBlur.cpp b/src/egg/gfx/eggScreenEffectBlur.cpp
index c445b216..25b379a7 100644
--- a/src/egg/gfx/eggScreenEffectBlur.cpp
+++ b/src/egg/gfx/eggScreenEffectBlur.cpp
@@ -1,6 +1,7 @@
 #include "egg/gfx/eggScreenEffectBlur.h"
 
 #include "common.h"
+#include "egg/gfx/eggCpuTexture.h"
 #include "egg/gfx/eggDrawGX.h"
 #include "egg/gfx/eggPostEffectBase.h"
 #include "egg/gfx/eggPostEffectBlur.h" // IWYU pragma: keep
@@ -12,6 +13,8 @@
 #include "rvl/GX/GXTypes.h"
 #include "rvl/MTX/mtx.h"
 
+#include <cstddef>
+
 namespace EGG {
 
 static const GXColor sDefaultColor = {0, 0, 0, 0xFF};
@@ -41,9 +44,66 @@ ScreenEffectBlur::~ScreenEffectBlur() {
     delete mpUnk2;
     delete mpBlur;
 }
-
+static const CopyFilter copyFilter = {
+    {0x15, 0, 0, 0x16, 0, 0x15, 0}
+};
 void ScreenEffectBlur::fn_804B32B0() {
-    // Oh god
+    if (mFlag & 1) {
+        StateGX::invalidateTexAllGX();
+        PostEffectBase::setProjection(GetScreen());
+        const Screen::DataEfb &efb = GetScreen().GetDataEfb();
+        u16 x1 = efb.vp.x1;
+        u16 y1 = efb.vp.y1;
+        f32 sizeX = (u16)sScreen.GetSize().x * field_0x10;
+        f32 sizeY = (u16)sScreen.GetSize().y * field_0x10;
+        u16 x2 = efb.vp.x2 * field_0x10;
+        u16 y2 = efb.vp.y2 * field_0x10;
+
+        StateGX::ScopedColor _clr(true);
+        StateGX::ScopedAlpha _alpha(false);
+        StateGX::ScopedDither _dither(false);
+        TextureBuffer *pTex0 = NULL;
+        if (field_0x0C & 1) {
+            pTex0 = TextureBuffer::alloc(x2, y2, GX_TF_RGBA8);
+            pTex0->capture(x1, y1, 0, GX_TF_RGBA8);
+        }
+        TextureBuffer *pTex1 = TextureBuffer::alloc(x2, y2, GX_TF_IA8);
+        pTex1->setMinFilt(GX_NEAR);
+        pTex1->setMagFilt(GX_NEAR);
+        pTex1->capture(x1, y1, false, GX_TF_Z16);
+
+        // . . .
+        if (field_0x0C & 2) {
+            TextureBuffer *pTex2 = TextureBuffer::alloc(x2, y2, GX_TF_RGBA8);
+            pTex2->onCapFlag(0x8);
+            pTex2->setCopyFilter(copyFilter);
+            pTex2->capture(x1, y1, false, GX_CTF_R8);
+            u8 val = field_0x18 * 255.f;
+            GXColor clr = {val, val, val, val};
+            mpBlur->setStage0Color(clr);
+            mpBlur->setStage0F(field_0x1C);
+            mpBlur->mTex1 = (PostEffectBase::CapTextureWrapper){pTex2, GX_TEXMAP1};
+            mpBlur->draw(sizeX * 1.0f, sizeY * 1.0f);
+            pTex2->free();
+        }
+        // . . .
+
+        mpCpuTexture = TextureBuffer::alloc(x2, y2, GX_TF_I8);
+        mpCpuTexture->onCapFlag(0x8);
+        mpCpuTexture->setCopyFilter(copyFilter);
+        mpCpuTexture->capture(x1, y1, false, GX_CTF_R8);
+        pTex1->free();
+
+        if (field_0x0C & 1) {
+            nw4r::math::MTX34 m;
+            PSMTXScale(m, sizeY, sizeY, 1.f);
+            pTex0->load(GX_TEXMAP0);
+            DrawGX::BeginDrawScreen(true, true, false);
+            DrawGX::SetBlendMode(DrawGX::BLEND_14);
+            DrawGX::DrawDL16(m, DrawGX::WHITE);
+            pTex0->free();
+        }
+    }
 }
 
 void ScreenEffectBlur::fn_804B3710() {