Shadow Quality Enhancement (#311)

* Shadow Quality Enhancement

* added 1 space because we like consistency here

* Addressed encounter comments

* Renamed description of shadow resolution

* added period at the end of shadow resolution description

---------

Co-authored-by: MelonSpeedruns <melonspeedruns@stratobox.net>

include/dusk/settings.h

@@ -54,6 +54,7 @@ struct UserSettings {
         ConfigVar<bool> enableBloom;
         ConfigVar<bool> useWaterProjectionOffset;
         ConfigVar<bool> enableFrameInterpolation;
+        ConfigVar<int> shadowResolutionMultiplier;
 
         // Audio
         ConfigVar<bool> noLowHpSound;

src/d/d_drawlist.cpp

@@ -1441,7 +1441,11 @@ void dDlst_shadowSimple_c::set(cXyz* param_0, f32 param_1, f32 param_2, cXyz* pa
 void dDlst_shadowControl_c::init() {
 #if TARGET_PC
     // Increase shadow map resolution
-    static u16 l_realImageSize[2] = {1024, 512};
+    u16 l_realImageSize[2] =
+    {
+        192 * dusk::getSettings().game.shadowResolutionMultiplier,
+        64 * dusk::getSettings().game.shadowResolutionMultiplier
+    };
 #else
     static u16 l_realImageSize[2] = {192, 64};
 #endif
@@ -1480,7 +1484,19 @@ void dDlst_shadowControl_c::reset() {
 #endif
 }
 
+#if TARGET_PC
+int lastShadowValue = 0;
+#endif
+
 void dDlst_shadowControl_c::imageDraw(Mtx param_0) {
+    #if TARGET_PC
+    if (lastShadowValue != dusk::getSettings().game.shadowResolutionMultiplier) {
+        reset();
+        init();
+        lastShadowValue = dusk::getSettings().game.shadowResolutionMultiplier;
+    }
+    #endif
+
     static u8 l_matDL[] ATTRIBUTE_ALIGN(32) = {
         0x10, 0x00, 0x00, 0x10, 0x0E, 0x00, 0x00, 0x04, 0x00, 0x10, 0x00, 0x00, 0x10, 0x10,
         0x00, 0x00, 0x04, 0x00, 0x61, 0x28, 0x38, 0x00, 0x00, 0x61, 0xC0, 0x08, 0xFF, 0xF2,

src/dusk/imgui/ImGuiMenuEnhancements.cpp

@@ -85,6 +85,11 @@ namespace dusk {
                     ImGui::SetTooltip("Uses inter-frame interpolation to enable higher frame rates.\nVisual artifacts, animation glitches, or instability may occur.");
                 }
 
+                config::ImGuiSliderInt("Shadow Resolution", getSettings().game.shadowResolutionMultiplier, 1, 8, "x%d");
+                if (ImGui::IsItemHovered()) {
+                    ImGui::SetTooltip("Improves the shadow resolution, making them higher quality.");
+                }
+
                 ImGui::EndMenu();
             }
 

src/dusk/settings.cpp

@@ -42,6 +42,7 @@ UserSettings g_userSettings = {
         .enableBloom {"game.enableBloom", true},
         .useWaterProjectionOffset {"game.useWaterProjectionOffset", false},
         .enableFrameInterpolation = {"game.enableFrameInterpolation", false},
+        .shadowResolutionMultiplier {"game.shadowResolutionMultiplier", 1},
 
         // Audio
         .noLowHpSound {"game.noLowHpSound", false},
@@ -103,6 +104,7 @@ void registerSettings() {
     Register(g_userSettings.game.invertCameraXAxis);
     Register(g_userSettings.game.enableBloom);
     Register(g_userSettings.game.useWaterProjectionOffset);
+    Register(g_userSettings.game.shadowResolutionMultiplier);
     Register(g_userSettings.game.enableFastIronBoots);
     Register(g_userSettings.game.canTransformAnywhere);
     Register(g_userSettings.game.freeMagicArmor);