Vulkan: extract volumetric/CBT/vegwind pipelines to vk_volumetric_pipelines.c

Move volumetric fog layouts, compute and composite pipelines, fluid sim
compute, depth resolve, luminance, CBT terrain compute, and vegetation-wind
buffer/descriptor setup out of vk.c. Declare vk_create_volumetric_pipelines
in vk.h. Move VEGWIND_MAX_VERTS/STRIDE to vk.h for shared use. Include
vk_postfx_params.h for VkLuminancePushConstants.

Co-authored-by: Tim Fox <timfox@outlook.com>

Author: cursoragent

docs/ARCHITECTURE.md

@@ -53,6 +53,7 @@ src/
 │   │   ├── vk_occlusion.c/h       GPU occlusion queries + entity visibility buffer (split from vk.c)
 │   │   ├── vk_create_pipeline.c/h Vk_Pipeline_Def graphics pipeline factory + pipeline table lookup (split from vk.c)
 │   │   ├── vk_draw_state.c/h      Tess upload, vertex/index/descriptor/pipeline bind, draws (split from vk.c)
+│   │   ├── vk_volumetric_pipelines.c Volumetric fog / fluid / luminance / CBT / veg-wind pipeline setup (split from vk.c)
 │   │   ├── vk_fluidsim.c/h       Fluid simulation module
 │   │   ├── vk_postfx.c/h         PostFX (SSR, atmosphere, wind)
 │   │   ├── vk_flashlight.c/h     Projected texture system

src/platform/win32/msvc2017/vulkan.vcxproj

@@ -271,6 +271,7 @@
     <ClCompile Include="..\..\..\renderers\vulkan\vk_occlusion.c" />
     <ClCompile Include="..\..\..\renderers\vulkan\vk_create_pipeline.c" />
     <ClCompile Include="..\..\..\renderers\vulkan\vk_draw_state.c" />
+    <ClCompile Include="..\..\..\renderers\vulkan\vk_volumetric_pipelines.c" />
     <ClCompile Include="..\..\..\renderers\vulkan\vk_device.c" />
     <ClCompile Include="..\..\..\renderers\vulkan\vk_flashlight.c" />
     <ClCompile Include="..\..\..\renderers\vulkan\vk_flares.c" />

src/platform/win32/msvc2017/vulkan.vcxproj.filters

@@ -136,6 +136,9 @@
     <ClCompile Include="..\..\renderers\vulkan\vk_draw_state.c">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\renderers\vulkan\vk_volumetric_pipelines.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
     <ClCompile Include="..\..\renderers\vulkan\vk_attachments.c">
       <Filter>Source Files</Filter>
     </ClCompile>