Fix code formatting and alignment in compute shader derivatives sample

Aligns variable declarations, adjusts whitespace, and removes trailing spaces to improve code readability and maintain consistent formatting throughout the sample.

Author: gpx1000

samples/extensions/compute_shader_derivatives/compute_shader_derivatives.cpp

@@ -248,10 +248,10 @@ void ComputeShaderDerivatives::create_compute_pipeline()
 	vkUpdateDescriptorSets(device, 1, &write, 0, nullptr);
 
 	// Load compute shader based on selected derivative group mode
-	const char *comp_path = use_quads_ ?
-	                        "compute_shader_derivatives/slang/derivatives_quad.comp.spv" :
-	                        "compute_shader_derivatives/slang/derivatives_linear.comp.spv";
-	VkPipelineShaderStageCreateInfo stage = load_shader(comp_path, VK_SHADER_STAGE_COMPUTE_BIT);
+	const char                     *comp_path = use_quads_ ?
+	                                                "compute_shader_derivatives/slang/derivatives_quad.comp.spv" :
+	                                                "compute_shader_derivatives/slang/derivatives_linear.comp.spv";
+	VkPipelineShaderStageCreateInfo stage     = load_shader(comp_path, VK_SHADER_STAGE_COMPUTE_BIT);
 
 	VkComputePipelineCreateInfo compute_ci{VK_STRUCTURE_TYPE_COMPUTE_PIPELINE_CREATE_INFO};
 	compute_ci.stage  = stage;
@@ -381,15 +381,15 @@ void ComputeShaderDerivatives::create_graphics_pipeline()
 
 bool ComputeShaderDerivatives::prepare(const vkb::ApplicationOptions &options)
 {
-    if (!ApiVulkanSample::prepare(options))
-    {
-        return false;
-    }
+	if (!ApiVulkanSample::prepare(options))
+	{
+		return false;
+	}
 
 	// Decide which derivative group to use at runtime based on enabled device features.
 	// Prefer Quads when available; otherwise, fall back to Linear.
 	VkPhysicalDeviceComputeShaderDerivativesFeaturesKHR csd_features{VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_COMPUTE_SHADER_DERIVATIVES_FEATURES_KHR};
-	VkPhysicalDeviceFeatures2                            features2{VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_FEATURES_2};
+	VkPhysicalDeviceFeatures2                           features2{VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_FEATURES_2};
 	features2.pNext = &csd_features;
 	vkGetPhysicalDeviceFeatures2(get_device().get_gpu().get_handle(), &features2);
 	use_quads_ = (csd_features.computeDerivativeGroupQuads == VK_TRUE);
@@ -400,10 +400,10 @@ bool ComputeShaderDerivatives::prepare(const vkb::ApplicationOptions &options)
 		return false;
 	}
 
-    // Create resources in order: image, buffer, then pipelines
-    create_storage_image();
-    create_output_buffer_and_descriptors();
-    create_compute_pipeline();
+	// Create resources in order: image, buffer, then pipelines
+	create_storage_image();
+	create_output_buffer_and_descriptors();
+	create_compute_pipeline();
 	create_graphics_pipeline();
 
 	prepared = true;