From a9dac11f159ffaecc7cd9a7bb12c988f6f4a76a1 Mon Sep 17 00:00:00 2001
From: Georg Lehmann <dadschoorse@gmail.com>
Date: Wed, 26 Jan 2022 17:16:29 +0100
Subject: [PATCH] main: FSR sharpness setting.

---
 src/main.cpp         | 7 +++++++
 src/main.hpp         | 1 +
 src/rendervulkan.cpp | 2 +-
 src/sdlwindow.cpp    | 6 ++++++
 4 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/src/main.cpp b/src/main.cpp
index 6fde02e..4e9e290 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -38,6 +38,7 @@ const struct option *gamescope_options = (struct option[]){
 	{ "output-height", required_argument, nullptr, 'H' },
 	{ "nearest-neighbor-filter", no_argument, nullptr, 'n' },
 	{ "fsr-upscaling", no_argument, nullptr, 'U' },
+	{ "fsr-sharpness", required_argument, nullptr, 0 },
 
 	// nested mode options
 	{ "nested-unfocused-refresh", required_argument, nullptr, 'o' },
@@ -87,6 +88,7 @@ const char usage[] =
 	"  -H, --output-height            output height\n"
 	"  -n, --nearest-neighbor-filter  use nearest neighbor filtering\n"
 	"  -U  --fsr-upscaling            use AMD FidelityFX™ Super Resolution 1.0 for upscaling"
+	"  --fsr-sharpness                FSR sharpness from 0 (max) to 20 (min)\n"
 	"  --cursor                       path to default cursor image\n"
 	"  -R, --ready-fd                 notify FD when ready\n"
 	"  -T, --stats-path               write statistics to path\n"
@@ -119,6 +121,8 @@ const char usage[] =
 	"  Super + F                      toggle fullscreen\n"
 	"  Super + N                      toggle nearest neighbour filtering\n"
 	"  Super + U                      toggle FSR upscaling\n"
+	"  Super + I                      increase FSR sharpness by 1\n"
+	"  Super + O                      decrease FSR sharpness by 1\n"
 	"  Super + S                      take a screenshot\n"
 	"";
 
@@ -139,6 +143,7 @@ bool g_bIsNested = false;
 
 bool g_bFilterGameWindow = true;
 bool g_fsrUpscale = false;
+int g_fsrSharpness = 2;
 
 bool g_bBorderlessOutputWindow = false;
 
@@ -278,6 +283,8 @@ int main(int argc, char **argv)
 					g_nTouchClickMode = g_nDefaultTouchClickMode;
 				} else if (strcmp(opt_name, "generate-drm-mode") == 0) {
 					g_drmModeGeneration = parse_drm_mode_generation( optarg );
+				} else if (strcmp(opt_name, "fsr-sharpness") == 0) {
+					g_fsrSharpness = atoi( optarg );
 				}
 				break;
 			case '?':
diff --git a/src/main.hpp b/src/main.hpp
index 9900669..24967cd 100644
--- a/src/main.hpp
+++ b/src/main.hpp
@@ -23,6 +23,7 @@ extern bool g_bFullscreen;
 extern bool g_bFilterGameWindow;
 
 extern bool g_fsrUpscale;
+extern int g_fsrSharpness;
 
 extern bool g_bBorderlessOutputWindow;
 
diff --git a/src/rendervulkan.cpp b/src/rendervulkan.cpp
index 5904f9e..e99ddf1 100644
--- a/src/rendervulkan.cpp
+++ b/src/rendervulkan.cpp
@@ -2513,7 +2513,7 @@ bool vulkan_composite( struct Composite_t *pComposite, struct VulkanPipeline_t *
 		vkCmdBindDescriptorSets(curCommandBuffer, VK_PIPELINE_BIND_POINT_COMPUTE, pipelineLayout, 0, 1, &descriptorSet, 0, 0);
 
 		uvec4_t tmp;
-		FsrRcasCon(&tmp.x, 0.2f);
+		FsrRcasCon(&tmp.x, g_fsrSharpness / 10.0f);
 		rcasConstants.u_layer0Offset.x = uint32_t(int32_t(fsrpComposite.data.vOffset[0].x));
 		rcasConstants.u_layer0Offset.y = uint32_t(int32_t(fsrpComposite.data.vOffset[0].y));
 		rcasConstants.u_opacity[0] = fsrpComposite.data.flOpacity[0];
diff --git a/src/sdlwindow.cpp b/src/sdlwindow.cpp
index 37dc6ac..505ce05 100644
--- a/src/sdlwindow.cpp
+++ b/src/sdlwindow.cpp
@@ -155,6 +155,12 @@ void inputSDLThreadRun( void )
 						case KEY_U:
 							g_fsrUpscale = !g_fsrUpscale;
 							break;
+						case KEY_I:
+							g_fsrSharpness = std::min(20, g_fsrSharpness + 1);
+							break;
+						case KEY_O:
+							g_fsrSharpness = std::max(0, g_fsrSharpness - 1);
+							break;
 						case KEY_S:
 							take_screenshot();
 							break;