Added gamma setting

src/files/settings_io.cpp

@@ -32,6 +32,7 @@ toml::Wrapper* create_wrapper(EngineSettings& settings) {
 	camera.add("sensitivity", &settings.camera.sensitivity);
 
 	toml::Section& graphics = wrapper->add("graphics");
+    graphics.add("gamma", &settings.graphics.gamma);
 	graphics.add("fog-curve", &settings.graphics.fogCurve);
 	graphics.add("backlight", &settings.graphics.backlight);
 	graphics.add("frustum-culling", &settings.graphics.frustumCulling);

src/frontend/WorldRenderer.cpp

@@ -157,7 +157,7 @@ void WorldRenderer::draw(const GfxContext& pctx, Camera* camera, bool hudVisible
 		shader->use();
 		shader->uniformMatrix("u_proj", camera->getProjection());
 		shader->uniformMatrix("u_view", camera->getView());
-		shader->uniform1f("u_gamma", 1.0f);
+		shader->uniform1f("u_gamma", settings.graphics.gamma);
 		shader->uniform1f("u_fogFactor", fogFactor);
 		shader->uniform1f("u_fogCurve", settings.graphics.fogCurve);
 		shader->uniform3f("u_cameraPos", camera->position);

src/settings.h

@@ -47,6 +47,7 @@ struct GraphicsSettings {
 	/* Fog opacity is calculated as `pow(depth*k, fogCurve)` where k depends on chunksLoadDistance.
 	   Use values in range [1.0 - 2.0] where 1.0 is linear, 2.0 is quadratic */
 	float fogCurve = 1.6f;
+    float gamma = 1.0f;
 	/* Enable blocks backlight to prevent complete darkness */
 	bool backlight = true;
 	/* Enable chunks frustum culling */