fix(render): honor terrain base-only face flags

adapters/fparkan-render-vulkan/src/ffi/smoke.rs

@@ -1902,18 +1902,23 @@ impl VulkanSmokeRenderer {
                     60,
                     &material_uv_transforms,
                 );
-                let unlit = self.material_unlit.get(texture_index).ok_or(
+                let material_mode = self.material_unlit.get(texture_index).ok_or(
                     VulkanSmokeRendererError::InvariantViolation {
                         context: "static material unlit flag",
                     },
                 )?;
-                let unlit = [unlit.to_ne_bytes()];
+                let material_mode = if range.terrain_base_only {
+                    ((*material_mode).round() as i32 | 16) as f32
+                } else {
+                    *material_mode
+                };
+                let material_mode = [material_mode.to_ne_bytes()];
                 device.device().cmd_push_constants(
                     command_buffer,
                     resources.pipeline_layout,
                     vk::ShaderStageFlags::VERTEX | vk::ShaderStageFlags::FRAGMENT,
                     124,
-                    &unlit.concat(),
+                    &material_mode.concat(),
                 );
                 device.device().cmd_draw_indexed(
                     command_buffer,
@@ -2577,6 +2582,7 @@ mod tests {
                 lightmap_index: 4,
                 batch_flags: 0x108,
                 pipeline_state: base_state,
+                terrain_base_only: false,
                 alpha_test_reference: 17,
             },
             VulkanStaticDrawRange {
@@ -2586,6 +2592,7 @@ mod tests {
                 lightmap_index: u8::MAX,
                 batch_flags: 0,
                 pipeline_state: LegacyPipelineState::default(),
+                terrain_base_only: false,
                 alpha_test_reference: 0,
             },
         ];
@@ -2769,6 +2776,7 @@ mod tests {
                 lightmap_index: u8::MAX,
                 batch_flags: 0,
                 pipeline_state: fparkan_render::LegacyPipelineState::default(),
+                terrain_base_only: false,
                 alpha_test_reference: 0,
             })
             .collect::<Vec<_>>();
@@ -2792,6 +2800,7 @@ mod tests {
                 lightmap_index: u8::MAX,
                 batch_flags: 0,
                 pipeline_state: fparkan_render::LegacyPipelineState::default(),
+                terrain_base_only: false,
                 alpha_test_reference: 0,
             },
             super::super::VulkanStaticDrawRange {
@@ -2801,6 +2810,7 @@ mod tests {
                 lightmap_index: u8::MAX,
                 batch_flags: 0,
                 pipeline_state: fparkan_render::LegacyPipelineState::default(),
+                terrain_base_only: false,
                 alpha_test_reference: 0,
             },
             super::super::VulkanStaticDrawRange {
@@ -2810,6 +2820,7 @@ mod tests {
                 lightmap_index: u8::MAX,
                 batch_flags: 0,
                 pipeline_state: fparkan_render::LegacyPipelineState::default(),
+                terrain_base_only: false,
                 alpha_test_reference: 0,
             },
         ];
@@ -2833,6 +2844,7 @@ mod tests {
                 lightmap_index: u8::MAX,
                 batch_flags: 0,
                 pipeline_state: fparkan_render::LegacyPipelineState::default(),
+                terrain_base_only: false,
                 alpha_test_reference: 0,
             })
             .collect::<Vec<_>>();
@@ -2861,6 +2873,7 @@ mod tests {
                 lightmap_index: u8::MAX,
                 batch_flags: 0,
                 pipeline_state: LegacyPipelineState::default(),
+                terrain_base_only: false,
                 alpha_test_reference: 0,
             })
             .collect::<Vec<_>>();

adapters/fparkan-render-vulkan/src/ffi/smoke_types.rs

@@ -422,6 +422,8 @@ pub struct VulkanStaticDrawRange {
     /// Bits `0x100` and `0x008` opt a range into that queue independently of
     /// the material blend category.
     pub batch_flags: u16,
+    /// Terrain ranges that use the native lit base-only path (face flag 0x400 clear).
+    pub terrain_base_only: bool,
     /// Backend-neutral fixed-function state for this source range.
     pub pipeline_state: LegacyPipelineState,
     /// Alpha-test reference in legacy 0..=255 units; dynamic material data.
@@ -754,6 +756,7 @@ impl VulkanStaticMesh {
                 material_index: 0,
                 lightmap_index: u8::MAX,
                 batch_flags: 0,
+                terrain_base_only: false,
                 pipeline_state: LegacyPipelineState::default(),
                 alpha_test_reference: 0,
             }],
@@ -989,6 +992,7 @@ mod static_mesh_tests {
                 material_index: 0,
                 lightmap_index: u8::MAX,
                 batch_flags: 0,
+                terrain_base_only: false,
                 pipeline_state: LegacyPipelineState::default(),
                 alpha_test_reference: 0,
             }],
@@ -1019,6 +1023,7 @@ mod static_mesh_tests {
                 material_index: 7,
                 lightmap_index: u8::MAX,
                 batch_flags: 0,
+                terrain_base_only: false,
                 pipeline_state: LegacyPipelineState::default(),
                 alpha_test_reference: 0,
             },
@@ -1028,6 +1033,7 @@ mod static_mesh_tests {
                 material_index: 2,
                 lightmap_index: u8::MAX,
                 batch_flags: 0,
+                terrain_base_only: false,
                 pipeline_state: LegacyPipelineState::default(),
                 alpha_test_reference: 0,
             },