Add slider for bloom brightness

include/dusk/settings.h

@@ -68,6 +68,7 @@ struct UserSettings {
 
         // Graphics
         ConfigVar<BloomMode> bloomMode;
+        ConfigVar<float> bloomMultiplier;
         ConfigVar<bool> enableWaterRefraction;
         ConfigVar<bool> enableFrameInterpolation;
         ConfigVar<int> shadowResolutionMultiplier;

src/dusk/imgui/ImGuiMenuGame.cpp

@@ -78,6 +78,14 @@ namespace dusk {
                     ImGui::EndCombo();
                 }
 
+                {
+                    float mult = getSettings().game.bloomMultiplier.getValue();
+                    if (ImGui::SliderFloat("Bloom Brightness", &mult, 0.0f, 1.0f, "%.2f")) {
+                        getSettings().game.bloomMultiplier.setValue(mult);
+                        config::Save();
+                    }
+                }
+
                 config::ImGuiCheckbox("Enable Water Refraction", getSettings().game.enableWaterRefraction);
 
                 ImGui::EndMenu();

src/dusk/settings.cpp

@@ -42,6 +42,7 @@ UserSettings g_userSettings = {
 
         // Graphics
         .bloomMode {"game.bloomMode", BloomMode::Classic},
+        .bloomMultiplier {"game.bloomMultiplier", 1.0f},
         .enableWaterRefraction {"game.enableWaterRefraction", true},
         .enableFrameInterpolation = {"game.enableFrameInterpolation", false},
         .shadowResolutionMultiplier {"game.shadowResolutionMultiplier", 1},
@@ -114,6 +115,7 @@ void registerSettings() {
     Register(g_userSettings.game.enableMirrorMode);
     Register(g_userSettings.game.invertCameraXAxis);
     Register(g_userSettings.game.bloomMode);
+    Register(g_userSettings.game.bloomMultiplier);
     Register(g_userSettings.game.enableWaterRefraction);
     Register(g_userSettings.game.shadowResolutionMultiplier);
     Register(g_userSettings.game.enableFastIronBoots);

src/m_Do/m_Do_graphic.cpp

@@ -1488,7 +1488,7 @@ void mDoGph_gInf_c::bloom_c::draw2() {
         GXSetTexCoordGen(GX_TEXCOORD0, GX_TG_MTX2x4, GX_TG_TEX0, GX_IDENTITY);
         GXSetBlendMode(GX_BM_BLEND, GX_BL_SRCALPHA, GX_BL_ONE, GX_LO_OR);
         for (int i = divNum; i > divStart; i--) {
-            float alpha = 255.0f * powf(0.25f, 1.0f / (divNum - i + 1));
+            float alpha = 255.0f * powf(0.25f * dusk::getSettings().game.bloomMultiplier.getValue(), 1.0f / (divNum - i + 1));
             GXSetTevColorS10(GX_TEVREG0, {0, 0, 0, s16(alpha)});
 
             divCopySrc(i);