ADD: CSM with base shadow map 2

src/render/vk_renderpass_shadow.cpp

@@ -45,7 +45,7 @@ void ShadowPass::init(EngineContext *context)
         b.set_cull_mode(VK_CULL_MODE_BACK_BIT, VK_FRONT_FACE_CLOCKWISE);
         b.set_multisampling_none();
         b.disable_blending();
-        // Reverse-Z depth test for shadow maps (clear=0.0, GREATER_OR_EQUAL)
+
         b.enable_depthtest(true, VK_COMPARE_OP_GREATER_OR_EQUAL);
         b.set_depth_format(VK_FORMAT_D32_SFLOAT);
 
@@ -85,7 +85,6 @@ void ShadowPass::register_graph(RenderGraph *graph, std::span<RGImageHandle> cas
             RGPassType::Graphics,
             [shadowDepth](RGPassBuilder &builder, EngineContext *ctx)
             {
-                // Reverse-Z depth clear to 0.0
                 VkClearValue clear{}; clear.depthStencil = {0.f, 0};
                 builder.write_depth(shadowDepth, true, clear);