[video_core/host_shaders] add Snapdragon GSRv1 fragment shaders (#3307)

Signed-off-by: lizzie <lizzie@eden-emu.dev>
Co-authored-by: CamilleLaVey <camillelavey99@gmail.com>
Co-authored-by: xbzk <xbzk@eden-emu.dev>
Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/3307
Reviewed-by: MaranBr <maranbr@eden-emu.dev>
Reviewed-by: CamilleLaVey <camillelavey99@gmail.com>

docs/user/Graphics.md

@@ -44,6 +44,10 @@ Various graphical filters exist - each of them aimed at a specific target/image
 - **MMPX**: Nearest-neighbour filter aimed at providing higher pixel-art quality.
   - **Pros**: Offers decent pixel-art upscaling.
   - **Cons**: Only works for pixel-art.
+- **SGSR**: Uses Snapdragon Studios Game Super Resolution to enhance image quality (similar to FSR, but for Adreno devices).
+  - **Pros**: Optimized for Adreno devices.
+  - **Cons**: Doesn't play nicely with non-Adreno devices.
+- **SGSR Edge**: Almost the same pipeline as SGSR, but with improved edge detection.
 
 ### Anisotropy values
 

src/android/app/src/main/java/org/yuzu/yuzu_emu/features/settings/ui/SettingsFragmentPresenter.kt

@@ -76,18 +76,25 @@ class SettingsFragmentPresenter(
         }
     }
 
-    private fun isFsrScalingFilterSelected(): Boolean {
+    private fun isSharpnessScalingFilterSelected(): Boolean {
-        val fsrFilterValue = resolveFsrScalingFilterValue() ?: return false
         val needsGlobal = getNeedsGlobalForKey(IntSetting.RENDERER_SCALING_FILTER.key)
         val selectedFilter = IntSetting.RENDERER_SCALING_FILTER.getInt(needsGlobal)
-        return selectedFilter == fsrFilterValue
+        return selectedFilter in resolveSharpnessScalingFilterValues()
     }
 
-    private fun resolveFsrScalingFilterValue(): Int? {
+    private fun resolveSharpnessScalingFilterValues(): Set<Int> {
         val names = context.resources.getStringArray(R.array.rendererScalingFilterNames)
         val values = context.resources.getIntArray(R.array.rendererScalingFilterValues)
-        val fsrIndex = names.indexOf(context.getString(R.string.scaling_filter_fsr))
+        val sharpnessFilterNames = setOf(
-        return if (fsrIndex in values.indices) values[fsrIndex] else null
+            context.getString(R.string.scaling_filter_fsr),
+            context.getString(R.string.scaling_filter_sgsr),
+            context.getString(R.string.scaling_filter_sgsr_edge),
+        )
+        return names.asSequence()
+            .mapIndexedNotNull { index, name ->
+                if (name in sharpnessFilterNames && index in values.indices) values[index] else null
+            }
+            .toSet()
     }
 
     // Allows you to show/hide abstract settings based on the paired setting key
@@ -267,7 +274,7 @@ class SettingsFragmentPresenter(
             add(IntSetting.RENDERER_RESOLUTION.key)
             add(IntSetting.RENDERER_VSYNC.key)
             add(IntSetting.RENDERER_SCALING_FILTER.key)
-            if (isFsrScalingFilterSelected()) {
+            if (isSharpnessScalingFilterSelected()) {
                 add(IntSetting.FSR_SHARPENING_SLIDER.key)
             }
             add(IntSetting.RENDERER_ANTI_ALIASING.key)

src/android/app/src/main/java/org/yuzu/yuzu_emu/fragments/EmulationFragment.kt

@@ -1090,7 +1090,7 @@ class EmulationFragment : Fragment(), SurfaceHolder.Callback {
     private fun addQuickSettings() {
         binding.quickSettingsSheet.apply {
             val container = binding.quickSettingsSheet.findViewById<ViewGroup>(R.id.quick_settings_container)
-            val isFsrSelected = isFsrScalingFilterSelected()
+            val isSharpnessFilterSelected = isSharpnessScalingFilterSelected()
 
             container.removeAllViews()
 
@@ -1176,7 +1176,7 @@ class EmulationFragment : Fragment(), SurfaceHolder.Callback {
                 addQuickSettings()
             }
 
-            if (isFsrSelected) {
+            if (isSharpnessFilterSelected) {
                 quickSettings.addSliderSetting(
                     R.string.fsr_sharpness,
                     container,
@@ -1197,17 +1197,24 @@ class EmulationFragment : Fragment(), SurfaceHolder.Callback {
         }
     }
 
-    private fun isFsrScalingFilterSelected(): Boolean {
+    private fun isSharpnessScalingFilterSelected(): Boolean {
-        val fsrFilterValue = resolveFsrScalingFilterValue() ?: return false
         val selectedFilter = IntSetting.RENDERER_SCALING_FILTER.getInt(needsGlobal = false)
-        return selectedFilter == fsrFilterValue
+        return selectedFilter in resolveSharpnessScalingFilterValues()
     }
 
-    private fun resolveFsrScalingFilterValue(): Int? {
+    private fun resolveSharpnessScalingFilterValues(): Set<Int> {
         val names = resources.getStringArray(R.array.rendererScalingFilterNames)
         val values = resources.getIntArray(R.array.rendererScalingFilterValues)
-        val fsrIndex = names.indexOf(getString(R.string.scaling_filter_fsr))
+        val sharpnessFilterNames = setOf(
-        return if (fsrIndex in values.indices) values[fsrIndex] else null
+            getString(R.string.scaling_filter_fsr),
+            getString(R.string.scaling_filter_sgsr),
+            getString(R.string.scaling_filter_sgsr_edge),
+        )
+        return names.asSequence()
+            .mapIndexedNotNull { index, name ->
+                if (name in sharpnessFilterNames && index in values.indices) values[index] else null
+            }
+            .toSet()
     }
 
     private fun openQuickSettingsMenu() {

src/android/app/src/main/res/values/arrays.xml

@@ -240,6 +240,8 @@
         <item>@string/scaling_filter_bspline</item>
         <item>@string/scaling_filter_mitchell</item>
         <item>@string/scaling_filter_spline1</item>
+        <item>@string/scaling_filter_sgsr</item>
+        <item>@string/scaling_filter_sgsr_edge</item>
     </string-array>
 
     <integer-array name="rendererScalingFilterValues">
@@ -256,6 +258,8 @@
         <item>10</item>
         <item>11</item>
         <item>12</item>
+        <item>13</item>
+        <item>14</item>
     </integer-array>
 
     <string-array name="rendererAntiAliasingNames">

src/android/app/src/main/res/values/strings.xml

@@ -468,8 +468,8 @@
     <string name="renderer_resolution">Resolution (Handheld/Docked)</string>
     <string name="renderer_vsync">VSync mode</string>
     <string name="renderer_scaling_filter">Window adapting filter</string>
-    <string name="fsr_sharpness">FSR sharpness</string>
+    <string name="fsr_sharpness">FSR/SGSR sharpness</string>
-    <string name="fsr_sharpness_description">Determines how sharpened the image will look while using FSR\'s dynamic contrast</string>
+    <string name="fsr_sharpness_description">Determines how sharpened the image will look while using FSR or SGSR filters</string>
     <string name="renderer_anti_aliasing">Anti-aliasing method</string>
 
 
@@ -1080,6 +1080,8 @@
     <string name="scaling_filter_bspline" translatable="false">B-Spline</string>
     <string name="scaling_filter_mitchell" translatable="false">Mitchell</string>
     <string name="scaling_filter_mmpx" translatable="false">MMPX</string>
+    <string name="scaling_filter_sgsr" translatable="false">Snapdragon GSR</string>
+    <string name="scaling_filter_sgsr_edge" translatable="false">Snapdragon GSR EdgeDir</string>
 
     <!-- Anti-Aliasing -->
     <string name="anti_aliasing_none">None</string>

src/common/settings_enums.h

@@ -145,7 +145,7 @@ ENUM(ConfirmStop, Ask_Always, Ask_Based_On_Game, Ask_Never);
 ENUM(FullscreenMode, Borderless, Exclusive);
 ENUM(NvdecEmulation, Off, Cpu, Gpu);
 ENUM(ResolutionSetup, Res1_4X, Res1_2X, Res3_4X, Res1X, Res5_4X, Res3_2X, Res2X, Res3X, Res4X, Res5X, Res6X, Res7X, Res8X);
-ENUM(ScalingFilter, NearestNeighbor, Bilinear, Bicubic, Gaussian, Lanczos, ScaleForce, Fsr, Area, ZeroTangent, BSpline, Mitchell, Spline1, Mmpx, MaxEnum);
+ENUM(ScalingFilter, NearestNeighbor, Bilinear, Bicubic, Gaussian, Lanczos, ScaleForce, Fsr, Area, ZeroTangent, BSpline, Mitchell, Spline1, Mmpx, Sgsr, SgsrEdge, MaxEnum);
 ENUM(AntiAliasing, None, Fxaa, Smaa, MaxEnum);
 ENUM(AspectRatio, R16_9, R4_3, R21_9, R16_10, Stretch);
 ENUM(ConsoleMode, Handheld, Docked);

src/qt_common/config/shared_translation.cpp

@@ -149,7 +149,7 @@ std::unique_ptr<TranslationMap> InitializeTranslations(QObject* parent) {
               "Options lower than 1X can cause artifacts."));
     INSERT(Settings, scaling_filter, tr("Window Adapting Filter:"), QString());
     INSERT(Settings, fsr_sharpening_slider, tr("FSR Sharpness:"),
-           tr("Determines how sharpened the image will look using FSR's dynamic contrast."));
+           tr("Determines how sharpened the image will look using FSR's or SGSR's dynamic contrast."));
     INSERT(Settings, anti_aliasing, tr("Anti-Aliasing Method:"),
            tr("The anti-aliasing method to use.\nSMAA offers the best quality.\nFXAA "
               "can produce a more stable picture in lower resolutions."));
@@ -492,6 +492,8 @@ std::unique_ptr<ComboboxTranslationMap> ComboboxEnumeration(QObject* parent) {
                               PAIR(ScalingFilter, BSpline, tr("B-Spline")),
                               PAIR(ScalingFilter, Mitchell, tr("Mitchell")),
                               PAIR(ScalingFilter, Spline1, tr("Spline-1")),
+                              PAIR(ScalingFilter, Sgsr, tr("Snapdragon Game Super Resolution")),
+                              PAIR(ScalingFilter, SgsrEdge, tr("Snapdragon Game Super Resolution EdgeDir")),
                           }});
     translations->insert({Settings::EnumMetadata<Settings::AntiAliasing>::Index(),
                           {

src/qt_common/config/shared_translation.h

@@ -53,6 +53,8 @@ static const std::map<Settings::ScalingFilter, QString> scaling_filter_texts_map
     {Settings::ScalingFilter::Fsr, QStringLiteral(QT_TRANSLATE_NOOP("MainWindow", "FSR"))},
     {Settings::ScalingFilter::Area, QStringLiteral(QT_TRANSLATE_NOOP("MainWindow", "Area"))},
     {Settings::ScalingFilter::Mmpx, QStringLiteral(QT_TRANSLATE_NOOP("MainWindow", "MMPX"))},
+    {Settings::ScalingFilter::Sgsr, QStringLiteral(QT_TRANSLATE_NOOP("MainWindow", "SGSR"))},
+    {Settings::ScalingFilter::SgsrEdge, QStringLiteral(QT_TRANSLATE_NOOP("MainWindow", "SGSR EdgeDir"))},
 };
 
 static const std::map<Settings::ConsoleMode, QString> use_docked_mode_texts_map = {

src/video_core/CMakeLists.txt

@@ -130,6 +130,8 @@ add_library(video_core STATIC
     renderer_vulkan/present/present_push_constants.h
     renderer_vulkan/present/smaa.cpp
     renderer_vulkan/present/smaa.h
+    renderer_vulkan/present/sgsr.cpp
+    renderer_vulkan/present/sgsr.h
     renderer_vulkan/present/util.cpp
     renderer_vulkan/present/util.h
     renderer_vulkan/present/window_adapt_pass.cpp

src/video_core/host_shaders/CMakeLists.txt

@@ -76,6 +76,11 @@ set(SHADER_FILES
     ${CMAKE_CURRENT_SOURCE_DIR}/vulkan_quad_indexed.comp
     ${CMAKE_CURRENT_SOURCE_DIR}/vulkan_turbo_mode.comp
     ${CMAKE_CURRENT_SOURCE_DIR}/vulkan_uint8.comp
+
+    # Snapdragon Game Super Resolution
+    ${CMAKE_CURRENT_SOURCE_DIR}/sgsr1_shader.vert
+    ${CMAKE_CURRENT_SOURCE_DIR}/sgsr1_shader_mobile.frag
+    ${CMAKE_CURRENT_SOURCE_DIR}/sgsr1_shader_mobile_edge_direction.frag
 )
 
 if (PLATFORM_HAIKU)
@@ -90,7 +95,7 @@ if ("${GLSLANGVALIDATOR}" STREQUAL "GLSLANGVALIDATOR-NOTFOUND")
     message(FATAL_ERROR "Required program `glslangValidator` not found.")
 endif()
 
-set(GLSL_FLAGS "")
+set(GLSL_FLAGS "-DUseUniformBlock=1")
 set(SPIR_V_VERSION "spirv1.3")
 set(QUIET_FLAG "--quiet")
 

src/video_core/host_shaders/sgsr1_shader.vert

@@ -0,0 +1,19 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#version 450
+
+layout(push_constant) uniform constants {
+    vec2 scale;
+    vec2 size;
+    vec2 resize_factor;
+    float edge_sharpness;
+};
+layout(location = 0) out highp vec2 texcoord;
+
+void main() {
+    float x = float((gl_VertexIndex & 1) << 2);
+    float y = float((gl_VertexIndex & 2) << 1);
+    gl_Position = vec4(x - 1.0f, y - 1.0f, 0.0, 1.0f) * vec4(sign(resize_factor), 1.f, 1.f);
+    texcoord = vec2(x, y) * abs(resize_factor) * 0.5;
+}

src/video_core/host_shaders/sgsr1_shader_mobile.frag

@@ -0,0 +1,82 @@
+// SPDX-FileCopyrightText: Copyright (c) 2025, Qualcomm Innovation Center, Inc. All rights reserved.
+// SPDX-License-Identifier: BSD-3-Clause
+
+#version 460 core
+
+precision highp float;
+precision highp int;
+
+// Operation modes: RGBA -> 1, RGBY -> 3, LERP -> 4
+#define OPERATION_MODE 1
+#define EDGE_THRESHOLD (8.0 / 255.0)
+
+layout(push_constant) uniform constants {
+    vec2 scale;
+    vec2 size;
+    vec2 resize_factor;
+    float edge_sharpness;
+};
+layout(set = 0, binding = 0) uniform sampler2D sampler0;
+layout(location=0) in vec2 texcoord;
+layout(location=0) out vec4 frag_color;
+
+vec4 weightY(vec4 dx, vec4 dy, vec4 std) {
+    vec4 x = ((dx * dx) + (dy * dy)) * 0.55f + std;
+    return (x - 1.f) * (x - 4.f) * 3.8125f; // approx. of (x - 1) * (x - 4)^3
+}
+
+void main() {
+    vec4 color = textureLod(sampler0, texcoord.xy, 0.0f);
+    // image coord
+    vec2 icoord = (texcoord * size + vec2(-0.5f, 0.5f));
+    vec2 icoord_pixel = floor(icoord);
+    vec2 coord = icoord_pixel * scale;
+    vec2 pl = icoord - icoord_pixel;
+    // left: 0, right: 1, upDown: 2
+    mat3x4 dg = mat3x4(
+        textureGather(sampler0, coord, 1),
+        textureGather(sampler0, coord + vec2(2.f * scale.x, 0.0f), 1),
+        vec4(
+            textureGather(sampler0, coord + vec2(scale.x, -scale.y), 1).wz,
+            textureGather(sampler0, coord + vec2(scale.x, +scale.y), 1).yx
+        )
+    );
+    float edgeVote = abs(dg[0].z - dg[0].y) + abs(color.y - dg[0].y) + abs(color.y - dg[0].z);
+    if (edgeVote > EDGE_THRESHOLD) {
+        float mean = (dg[0].y + dg[0].z + dg[1].x + dg[1].w) * 0.25f;
+        dg = dg - mean;
+        vec4 sum = abs(dg[0]) + abs(dg[1]) + abs(dg[2]);
+        float std = 2.181818f / (sum.x + sum.y + sum.z + sum.w);
+        mat2x4 w = mat2x4(
+            weightY(
+                pl.xxxx + vec4(+1.0f, +0.0f, +0.0f, +1.0f),
+                pl.yyyy + vec4(-1.0f, -1.0f, +0.0f, +0.0f),
+                clamp(abs(dg[0]) * std, 0.0f, 1.0f)
+            ) + weightY(
+                pl.xxxx + vec4(-1.0f, -2.0f, -2.0f, -1.0f),
+                pl.yyyy + vec4(-1.0f, -1.0f, +0.0f, +0.0f),
+                clamp(abs(dg[1]) * std, 0.0f, 1.0f)
+            ) + weightY(
+                pl.xxxx + vec4(+0.0f, -1.0f, -1.0f, +0.0f),
+                pl.yyyy + vec4(+1.0f, +1.0f, -2.0f, -2.0f),
+                clamp(abs(dg[2]) * std, 0.0f, 1.0f)
+            ),
+            dg[0] + dg[1] + dg[2]
+        );
+        // compute final y with bounds
+        vec2 yb = vec2(
+            min(min(dg[0].y, dg[0].z), min(dg[1].x, dg[1].w)), // min
+            max(max(dg[0].y, dg[0].z), max(dg[1].x, dg[1].w))  // max
+        );
+        vec2 fvy = vec2(
+            w[0].x + w[0].y + w[0].z + w[0].w,
+            w[1].x + w[1].y + w[1].z + w[1].w
+        );
+        float fy = clamp((fvy.y / fvy.x) * edge_sharpness, yb[0], yb[1]);
+        // Smooth high contrast input
+        float dy = clamp(fy - color.y + mean, -23.0f / 255.0f, 23.0f / 255.0f);
+        color = clamp(color + dy, 0.0f, 1.0f);
+    }
+    color.w = 1.0f;  //assume alpha channel is not used
+    frag_color.xyzw = color;
+}

src/video_core/host_shaders/sgsr1_shader_mobile_edge_direction.frag

@@ -0,0 +1,115 @@
+// SPDX-FileCopyrightText: Copyright (c) 2025, Qualcomm Innovation Center, Inc. All rights reserved.
+// SPDX-License-Identifier: BSD-3-Clause
+
+#version 460 core
+
+//precision float;
+//precision int;
+
+// Operation modes: RGBA -> 1, RGBY -> 3, LERP -> 4
+#define OperationMode 1
+#define EdgeThreshold 8.0/255.0
+
+layout( push_constant ) uniform constants {
+    vec4 ViewportInfo[1];
+    vec2 ResizeFactor;
+    float EdgeSharpness;
+};
+layout(set = 0, binding = 0) uniform sampler2D ps0;
+layout(location=0) in vec2 in_TEXCOORD0;
+layout(location=0) out vec4 out_Target0;
+
+float fastLanczos2(float x) {
+    float wA = x-4.0;
+    float wB = x*wA-wA;
+    wA *= wA;
+    return wB*wA;
+}
+
+vec2 weightY(float dx, float dy, float c, vec3 data) {
+    float std = data.x;
+    vec2 dir = data.yz;
+    float edgeDis = ((dx*dir.y)+(dy*dir.x));
+    float x = (((dx*dx)+(dy*dy))+((edgeDis*edgeDis)*((clamp(((c*c)*std),0.0,1.0)*0.7)+-1.0)));
+    float w = fastLanczos2(x);
+    return vec2(w, w * c);
+}
+
+vec2 edgeDirection(vec4 left, vec4 right) {
+    vec2 dir;
+    float RxLz = (right.x + (-left.z));
+    float RwLy = (right.w + (-left.y));
+    vec2 delta;
+    delta.x = (RxLz + RwLy);
+    delta.y = (RxLz + (-RwLy));
+    float lengthInv = inversesqrt((delta.x * delta.x+ 3.075740e-05) + (delta.y * delta.y));
+    dir.x = (delta.x * lengthInv);
+    dir.y = (delta.y * lengthInv);
+    return dir;
+}
+
+void main() {
+    vec4 color;
+    if(OperationMode == 1)
+        color.xyz = textureLod(ps0, in_TEXCOORD0.xy, 0.0).xyz;
+    else
+        color.xyzw = textureLod(ps0, in_TEXCOORD0.xy, 0.0).xyzw;
+
+    if ( OperationMode!=4) {
+        vec2 imgCoord = ((in_TEXCOORD0.xy*ViewportInfo[0].zw)+vec2(-0.5,0.5));
+        vec2 imgCoordPixel = floor(imgCoord);
+        vec2 coord = (imgCoordPixel*ViewportInfo[0].xy);
+        vec2 pl = imgCoord - imgCoordPixel;
+        vec4  left = textureGather(ps0, coord, OperationMode);
+        float edgeVote = abs(left.z - left.y) + abs(color[OperationMode] - left.y)  + abs(color[OperationMode] - left.z) ;
+        if(edgeVote > EdgeThreshold) {
+            coord.x += ViewportInfo[0].x;
+
+            vec2 IR_highp_vec2_0 = coord + vec2(ViewportInfo[0].x, 0.0);
+            vec4 right = textureGather(ps0, IR_highp_vec2_0, OperationMode);
+            vec4 upDown;
+            vec2 IR_highp_vec2_1 = coord + vec2(0.0, -ViewportInfo[0].y);
+            upDown.xy = textureGather(ps0, IR_highp_vec2_1, OperationMode).wz;
+            vec2 IR_highp_vec2_2 = coord + vec2(0.0, ViewportInfo[0].y);
+            upDown.zw  = textureGather(ps0, IR_highp_vec2_2, OperationMode).yx;
+
+            float mean = (left.y+left.z+right.x+right.w)*0.25;
+            left = left - vec4(mean);
+            right = right - vec4(mean);
+            upDown = upDown - vec4(mean);
+            color.w =color[OperationMode] - mean;
+
+            float sum = (((((abs(left.x)+abs(left.y))+abs(left.z))+abs(left.w))+(((abs(right.x)+abs(right.y))+abs(right.z))+abs(right.w)))+(((abs(upDown.x)+abs(upDown.y))+abs(upDown.z))+abs(upDown.w)));
+            float sumMean = 1.014185e+01/sum;
+            float std = (sumMean*sumMean);
+
+            vec3 data = vec3(std, edgeDirection(left, right));
+            vec2 aWY = weightY(pl.x, pl.y+1.0, upDown.x,data);
+            aWY += weightY(pl.x-1.0, pl.y+1.0, upDown.y,data);
+            aWY += weightY(pl.x-1.0, pl.y-2.0, upDown.z,data);
+            aWY += weightY(pl.x, pl.y-2.0, upDown.w,data);
+            aWY += weightY(pl.x+1.0, pl.y-1.0, left.x,data);
+            aWY += weightY(pl.x, pl.y-1.0, left.y,data);
+            aWY += weightY(pl.x, pl.y, left.z,data);
+            aWY += weightY(pl.x+1.0, pl.y, left.w,data);
+            aWY += weightY(pl.x-1.0, pl.y-1.0, right.x,data);
+            aWY += weightY(pl.x-2.0, pl.y-1.0, right.y,data);
+            aWY += weightY(pl.x-2.0, pl.y, right.z,data);
+            aWY += weightY(pl.x-1.0, pl.y, right.w,data);
+
+            float finalY = aWY.y/aWY.x;
+            float maxY = max(max(left.y,left.z),max(right.x,right.w));
+            float minY = min(min(left.y,left.z),min(right.x,right.w));
+            float deltaY = clamp(EdgeSharpness*finalY, minY, maxY) -color.w;
+
+            //smooth high contrast input
+            deltaY = clamp(deltaY, -23.0 / 255.0, 23.0 / 255.0);
+
+            color.x = clamp((color.x+deltaY),0.0,1.0);
+            color.y = clamp((color.y+deltaY),0.0,1.0);
+            color.z = clamp((color.z+deltaY),0.0,1.0);
+        }
+    }
+    color.w = 1.0;  //assume alpha channel is not used
+    out_Target0.xyzw = color;
+}

src/video_core/renderer_opengl/gl_blit_screen.cpp

@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 // SPDX-FileCopyrightText: Copyright 2024 Torzu Emulator Project
@@ -115,6 +115,8 @@ void BlitScreen::CreateWindowAdapt() {
         window_adapt = MakeMmpx(device);
         break;
     case Settings::ScalingFilter::Fsr:
+    case Settings::ScalingFilter::Sgsr:
+    case Settings::ScalingFilter::SgsrEdge:
     case Settings::ScalingFilter::Bilinear:
     default:
         window_adapt = MakeBilinear(device);

src/video_core/renderer_vulkan/present/layer.cpp

@@ -15,6 +15,7 @@
 #include "common/settings.h"
 #include "video_core/framebuffer_config.h"
 #include "video_core/renderer_vulkan/present/fsr.h"
+#include "video_core/renderer_vulkan/present/sgsr.h"
 #include "video_core/renderer_vulkan/present/fxaa.h"
 #include "video_core/renderer_vulkan/present/layer.h"
 #include "video_core/renderer_vulkan/present/present_push_constants.h"
@@ -63,7 +64,11 @@ Layer::Layer(const Device& device_, MemoryAllocator& memory_allocator_, Schedule
     CreateDescriptorPool();
     CreateDescriptorSets(layout);
     if (filters.get_scaling_filter() == Settings::ScalingFilter::Fsr) {
-        fsr.emplace(device, memory_allocator, image_count, output_size);
+        sr_filter.emplace<FSR>(device, memory_allocator, image_count, output_size);
+    } else if (filters.get_scaling_filter() == Settings::ScalingFilter::Sgsr) {
+        sr_filter.emplace<SGSR>(device, memory_allocator, image_count, output_size, false);
+    } else if (filters.get_scaling_filter() == Settings::ScalingFilter::SgsrEdge) {
+        sr_filter.emplace<SGSR>(device, memory_allocator, image_count, output_size, true);
     }
 }
 
@@ -114,9 +119,12 @@ void Layer::ConfigureDraw(PresentPushConstants* out_push_constants,
         .height = scaled_height,
     };
 
-    if (fsr) {
+    if (auto* fsr = std::get_if<FSR>(&sr_filter)) {
         source_image_view = fsr->Draw(scheduler, image_index, source_image, source_image_view, render_extent, crop_rect);
         crop_rect = {0, 0, 1, 1};
+    } else if (auto* sgsr = std::get_if<SGSR>(&sr_filter)) {
+        source_image_view = sgsr->Draw(scheduler, image_index, source_image, source_image_view, render_extent, crop_rect);
+        crop_rect = {0, 0, 1, 1};
     }
 
     SetMatrixData(*out_push_constants, layout);

src/video_core/renderer_vulkan/present/layer.h

@@ -13,6 +13,7 @@
 #include "video_core/host1x/gpu_device_memory_manager.h"
 #include "video_core/vulkan_common/vulkan_wrapper.h"
 #include "video_core/renderer_vulkan/present/fsr.h"
+#include "video_core/renderer_vulkan/present/sgsr.h"
 #include "video_core/renderer_vulkan/present/fxaa.h"
 #include "video_core/renderer_vulkan/present/smaa.h"
 
@@ -95,7 +96,7 @@ private:
 
     Settings::AntiAliasing anti_alias_setting{};
     std::variant<std::monostate, FXAA, SMAA> anti_alias{};
-    std::optional<FSR> fsr{};
+    std::variant<std::monostate, SGSR, FSR> sr_filter{};
     std::vector<u64> resource_ticks{};
 };
 

src/video_core/renderer_vulkan/present/sgsr.cpp

@@ -0,0 +1,143 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "common/common_types.h"
+#include "common/div_ceil.h"
+#include "common/settings.h"
+
+//#include "video_core/sgsr.h"
+#include "video_core/host_shaders/sgsr1_shader_mobile_frag_spv.h"
+#include "video_core/host_shaders/sgsr1_shader_mobile_edge_direction_frag_spv.h"
+#include "video_core/host_shaders/sgsr1_shader_vert_spv.h"
+#include "video_core/renderer_vulkan/present/sgsr.h"
+#include "video_core/renderer_vulkan/present/util.h"
+#include "video_core/renderer_vulkan/vk_scheduler.h"
+#include "video_core/renderer_vulkan/vk_shader_util.h"
+#include "video_core/vulkan_common/vulkan_device.h"
+
+namespace Vulkan {
+
+using PushConstants = std::array<u32, 4 + 2 + 1>;
+
+SGSR::SGSR(const Device& device, MemoryAllocator& memory_allocator, size_t image_count, VkExtent2D extent, bool edge_dir)
+    : m_device{device}
+    , m_memory_allocator{memory_allocator}
+    , m_image_count{image_count}
+    , m_extent{extent}
+    , m_edge_dir{edge_dir}
+{
+    // Not finished yet initializing at ctor time?
+    m_dynamic_images.resize(m_image_count);
+    for (auto& images : m_dynamic_images) {
+        images.image = CreateWrappedImage(m_memory_allocator, m_extent, VK_FORMAT_R16G16B16A16_SFLOAT);
+        images.image_view = CreateWrappedImageView(m_device, images.image, VK_FORMAT_R16G16B16A16_SFLOAT);
+    }
+
+    m_renderpass = CreateWrappedRenderPass(m_device, VK_FORMAT_R16G16B16A16_SFLOAT);
+    for (auto& images : m_dynamic_images)
+        images.framebuffer = CreateWrappedFramebuffer(m_device, m_renderpass, images.image_view, m_extent);
+
+    m_sampler = CreateBilinearSampler(m_device);
+    m_vert_shader = BuildShader(m_device, SGSR1_SHADER_VERT_SPV);
+    m_stage_shader = m_edge_dir
+        ? BuildShader(m_device, SGSR1_SHADER_MOBILE_EDGE_DIRECTION_FRAG_SPV)
+        : BuildShader(m_device, SGSR1_SHADER_MOBILE_FRAG_SPV);
+    // 2 descriptors, 2 descriptor sets per invocation
+    m_descriptor_pool = CreateWrappedDescriptorPool(m_device,  m_image_count, m_image_count);
+    m_descriptor_set_layout = CreateWrappedDescriptorSetLayout(m_device, {VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER});
+
+    VkDescriptorSetLayout layout = *m_descriptor_set_layout;
+    for (auto& images : m_dynamic_images)
+        images.descriptor_sets = CreateWrappedDescriptorSets(m_descriptor_pool, layout);
+
+    const VkPushConstantRange range{
+        .stageFlags = VK_SHADER_STAGE_VERTEX_BIT | VK_SHADER_STAGE_FRAGMENT_BIT,
+        .offset = 0,
+        .size = sizeof(PushConstants),
+    };
+    VkPipelineLayoutCreateInfo ci{
+        .sType = VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO,
+        .pNext = nullptr,
+        .flags = 0,
+        .setLayoutCount = 1,
+        .pSetLayouts = m_descriptor_set_layout.address(),
+        .pushConstantRangeCount = 1,
+        .pPushConstantRanges = &range,
+    };
+    m_pipeline_layout = m_device.GetLogical().CreatePipelineLayout(ci);
+    m_stage_pipeline = CreateWrappedPipeline(m_device, m_renderpass, m_pipeline_layout, std::tie(m_vert_shader, m_stage_shader));
+}
+
+void SGSR::UpdateDescriptorSets(VkImageView image_view, size_t image_index) {
+    Images& images = m_dynamic_images[image_index];
+    std::vector<VkDescriptorImageInfo> image_infos;
+    std::vector<VkWriteDescriptorSet> updates;
+    image_infos.reserve(1);
+    updates.push_back(CreateWriteDescriptorSet(image_infos, *m_sampler, image_view, images.descriptor_sets[0], 0));
+    m_device.GetLogical().UpdateDescriptorSets(updates, {});
+}
+
+void SGSR::UploadImages(Scheduler& scheduler) {
+    if (!m_images_ready) {
+        scheduler.Record([&](vk::CommandBuffer cmdbuf) {
+            for (auto& image : m_dynamic_images)
+                ClearColorImage(cmdbuf, *image.image);
+        });
+        scheduler.Finish();
+        m_images_ready = true;
+    }
+}
+
+VkImageView SGSR::Draw(Scheduler& scheduler, size_t image_index, VkImage source_image, VkImageView source_image_view, VkExtent2D input_image_extent, const Common::Rectangle<f32>& crop_rect) {
+    Images& images = m_dynamic_images[image_index];
+    auto const output_image = *images.image;
+    auto const descriptor_set = images.descriptor_sets[0];
+    auto const framebuffer = *images.framebuffer;
+    auto const pipeline = *m_stage_pipeline;
+
+    VkPipelineLayout layout = *m_pipeline_layout;
+    VkRenderPass renderpass = *m_renderpass;
+    VkExtent2D extent = m_extent;
+
+    const f32 input_image_width = f32(input_image_extent.width);
+    const f32 input_image_height = f32(input_image_extent.height);
+    const f32 viewport_width = (crop_rect.right - crop_rect.left) * input_image_width;
+    const f32 viewport_height = (crop_rect.bottom - crop_rect.top) * input_image_height;
+    // expected [0, 2]
+    const f32 sharpening = f32(Settings::values.fsr_sharpening_slider.GetValue()) / 100.0f;
+
+    // p = (tex * viewport) / input = [0,n] (normalized texcoords)
+    // p * input = [0,1024], [0,768]
+    // layout( push_constant ) uniform constants {
+    //     highp vec4 ViewportInfo[1];
+    //     highp vec2 ResizeFactor;
+    //     highp float EdgeSharpness;
+    // };
+    PushConstants viewport_con{};
+    viewport_con[0] = std::bit_cast<u32>(std::abs(1.f / viewport_width));
+    viewport_con[1] = std::bit_cast<u32>(std::abs(1.f / viewport_height));
+    viewport_con[2] = std::bit_cast<u32>(std::abs(viewport_width));
+    viewport_con[3] = std::bit_cast<u32>(std::abs(viewport_height));
+    viewport_con[4] = std::bit_cast<u32>(viewport_width / input_image_width);
+    viewport_con[5] = std::bit_cast<u32>(viewport_height / input_image_height);
+    viewport_con[6] = std::bit_cast<u32>(sharpening);
+
+    UploadImages(scheduler);
+    UpdateDescriptorSets(source_image_view, image_index);
+
+    scheduler.RequestOutsideRenderPassOperationContext();
+    scheduler.Record([=](vk::CommandBuffer cmdbuf) {
+        TransitionImageLayout(cmdbuf, source_image, VK_IMAGE_LAYOUT_GENERAL);
+        TransitionImageLayout(cmdbuf, output_image, VK_IMAGE_LAYOUT_GENERAL);
+        BeginRenderPass(cmdbuf, renderpass, framebuffer, extent);
+        cmdbuf.BindPipeline(VK_PIPELINE_BIND_POINT_GRAPHICS, pipeline);
+        cmdbuf.BindDescriptorSets(VK_PIPELINE_BIND_POINT_GRAPHICS, layout, 0, descriptor_set, {});
+        cmdbuf.PushConstants(layout, VK_SHADER_STAGE_VERTEX_BIT | VK_SHADER_STAGE_FRAGMENT_BIT, viewport_con);
+        cmdbuf.Draw(3, 1, 0, 0);
+        cmdbuf.EndRenderPass();
+        TransitionImageLayout(cmdbuf, output_image, VK_IMAGE_LAYOUT_GENERAL);
+    });
+    return *images.image_view;
+}
+
+} // namespace Vulkan

src/video_core/renderer_vulkan/present/sgsr.h

@@ -0,0 +1,50 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#pragma once
+
+#include "common/math_util.h"
+#include "video_core/vulkan_common/vulkan_memory_allocator.h"
+#include "video_core/vulkan_common/vulkan_wrapper.h"
+
+namespace Vulkan {
+
+class Device;
+class Scheduler;
+
+class SGSR {
+public:
+    static constexpr size_t SGSR_STAGE_COUNT = 1;
+    explicit SGSR(const Device& device, MemoryAllocator& memory_allocator, size_t image_count, VkExtent2D extent, bool edge_dir);
+    VkImageView Draw(Scheduler& scheduler, size_t image_index, VkImage source_image, VkImageView source_image_view, VkExtent2D input_image_extent, const Common::Rectangle<f32>& crop_rect);
+private:
+    void Initialize();
+    void UploadImages(Scheduler& scheduler);
+    void UpdateDescriptorSets(VkImageView image_view, size_t image_index);
+
+    const Device& m_device;
+    MemoryAllocator& m_memory_allocator;
+    const size_t m_image_count;
+    const VkExtent2D m_extent;
+
+    vk::DescriptorPool m_descriptor_pool;
+    vk::DescriptorSetLayout m_descriptor_set_layout;
+    vk::PipelineLayout m_pipeline_layout;
+    vk::ShaderModule m_vert_shader;
+    vk::ShaderModule m_stage_shader;
+    vk::Pipeline m_stage_pipeline;
+    vk::RenderPass m_renderpass;
+    vk::Sampler m_sampler;
+
+    struct Images {
+        vk::DescriptorSets descriptor_sets;
+        vk::Image image;
+        vk::ImageView image_view;
+        vk::Framebuffer framebuffer;
+    };
+    std::vector<Images> m_dynamic_images;
+    bool m_images_ready{};
+    bool m_edge_dir{};
+};
+
+} // namespace Vulkan

src/video_core/renderer_vulkan/vk_blit_screen.cpp

@@ -77,6 +77,8 @@ void BlitScreen::SetWindowAdaptPass() {
         window_adapt = MakeMmpx(device, swapchain_view_format);
         break;
     case Settings::ScalingFilter::Fsr:
+    case Settings::ScalingFilter::Sgsr:
+    case Settings::ScalingFilter::SgsrEdge:
     case Settings::ScalingFilter::Bilinear:
     default:
         window_adapt = MakeBilinear(device, swapchain_view_format);

src/yuzu/configuration/configure_graphics.cpp

@@ -221,7 +221,7 @@ void ConfigureGraphics::Setup(const ConfigurationShared::Builder& builder) {
                 // FSR needs a reversed slider and a 0.5 multiplier
                 return builder.BuildWidget(
                     setting, apply_funcs, ConfigurationShared::RequestType::ReverseSlider, true,
-                    0.5f, nullptr, tr("%", "FSR sharpening percentage (e.g. 50%)"));
+                    0.5f, nullptr, tr("%", "FSR/SGSR sharpening percentage (e.g. 50%)"));
             } else {
                 return builder.BuildWidget(setting, apply_funcs);
             }

src/yuzu/main_window.cpp

@@ -4164,8 +4164,7 @@ void MainWindow::UpdateAPIText() {
 void MainWindow::UpdateFilterText() {
     const auto filter = Settings::values.scaling_filter.GetValue();
     const auto filter_text = ConfigurationShared::scaling_filter_texts_map.find(filter)->second;
-    filter_status_button->setText(filter == Settings::ScalingFilter::Fsr ? tr("FSR")
+    filter_status_button->setText(filter_text.toUpper());
-                                                                         : filter_text.toUpper());
 }
 
 void MainWindow::UpdateAAText() {