refactor(ww3d2): Route buffers and draw calls via IRenderBackend

[bobtista]

• Follow up for refactor(ww3d2): Implement first bits for IRenderBackend interface #2613
• Merge after refactor(ww3d2): Route texture binding via IRenderBackend #3422

Now Set_Vertex_Buffer, Set_Index_Buffer, Set_Index_Buffer_Index_Offset, Draw_Triangles and Draw_Strip are on IRenderBackend. The signatures match DX8Wrapper, including the 16-bit draw arguments. Widening them is a separate change. The second Draw_Strip argument is named polygon_count, as in the DX8Wrapper implementation, because it is a primitive count and not an index count. dx8polygonrenderer.h now includes ww3d.h and IRenderBackend.h for its inline draw calls. Three files no longer use DX8Wrapper and drop its include.

Todo:

• Build win32, including W3DView and WorldBuilder
• Load two skirmish saves and the shell map, open W3DView through its device dialog, and open WorldBuilder. Same result as main
• Replicate to Generals

[coderabbitai]

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📥 Commits

Reviewing files that changed from the base of the PR and between f8ba7eb and 98f8419.

📒 Files selected for processing (52)

• Core/GameEngineDevice/Source/W3DDevice/GameClient/BaseHeightMap.cpp
• Core/GameEngineDevice/Source/W3DDevice/GameClient/FlatHeightMap.cpp
• Core/GameEngineDevice/Source/W3DDevice/GameClient/HeightMap.cpp
• Core/GameEngineDevice/Source/W3DDevice/GameClient/W3DDebugIcons.cpp
• Core/GameEngineDevice/Source/W3DDevice/GameClient/W3DDisplay.cpp
• Core/GameEngineDevice/Source/W3DDevice/GameClient/W3DScorch.cpp
• Core/GameEngineDevice/Source/W3DDevice/GameClient/W3DShaderManager.cpp
• Core/GameEngineDevice/Source/W3DDevice/GameClient/W3DSmudge.cpp
• Core/GameEngineDevice/Source/W3DDevice/GameClient/W3DSnow.cpp
• Core/GameEngineDevice/Source/W3DDevice/GameClient/W3DTerrainBackground.cpp
• Core/GameEngineDevice/Source/W3DDevice/GameClient/W3DTerrainTracks.cpp
• Core/GameEngineDevice/Source/W3DDevice/GameClient/W3DTreeBuffer.cpp
• Core/GameEngineDevice/Source/W3DDevice/GameClient/W3DView.cpp
• Core/GameEngineDevice/Source/W3DDevice/GameClient/Water/W3DWater.cpp
• Core/GameEngineDevice/Source/W3DDevice/GameClient/Water/W3DWaterTracks.cpp
• Core/Libraries/Source/WWVegas/WW3D2/Backend/DX8Backend.cpp
• Core/Libraries/Source/WWVegas/WW3D2/Backend/DX8Backend.h
• Core/Libraries/Source/WWVegas/WW3D2/IRenderBackend.h
• Core/Libraries/Source/WWVegas/WW3D2/dx8polygonrenderer.h
• Core/Libraries/Source/WWVegas/WW3D2/dx8renderer.cpp
• Core/Libraries/Source/WWVegas/WW3D2/dx8wrapper.h
• Core/Libraries/Source/WWVegas/WW3D2/dynamesh.cpp
• Core/Libraries/Source/WWVegas/WW3D2/line3d.cpp
• Core/Libraries/Source/WWVegas/WW3D2/matpass.cpp
• Core/Libraries/Source/WWVegas/WW3D2/pointgr.cpp
• Core/Libraries/Source/WWVegas/WW3D2/ringobj.cpp
• Core/Libraries/Source/WWVegas/WW3D2/seglinerenderer.cpp
• Core/Libraries/Source/WWVegas/WW3D2/sortingrenderer.cpp
• Core/Libraries/Source/WWVegas/WW3D2/sphereobj.cpp
• Core/Libraries/Source/WWVegas/WW3D2/streakRender.cpp
• Core/Libraries/Source/WWVegas/WW3D2/ww3d.cpp
• Core/Tools/W3DView/GammaDialog.cpp
• Core/Tools/W3DView/MainFrm.cpp
• Core/Tools/W3DView/ScreenCursor.cpp
• GeneralsMD/Code/GameEngineDevice/Source/W3DDevice/GameClient/Shadow/W3DProjectedShadow.cpp
• GeneralsMD/Code/GameEngineDevice/Source/W3DDevice/GameClient/Shadow/W3DVolumetricShadow.cpp
• GeneralsMD/Code/GameEngineDevice/Source/W3DDevice/GameClient/W3DBibBuffer.cpp
• GeneralsMD/Code/GameEngineDevice/Source/W3DDevice/GameClient/W3DBridgeBuffer.cpp
• GeneralsMD/Code/GameEngineDevice/Source/W3DDevice/GameClient/W3DInGameUI.cpp
• GeneralsMD/Code/GameEngineDevice/Source/W3DDevice/GameClient/W3DRoadBuffer.cpp
• GeneralsMD/Code/GameEngineDevice/Source/W3DDevice/GameClient/W3DScene.cpp
• GeneralsMD/Code/GameEngineDevice/Source/W3DDevice/GameClient/W3DStatusCircle.cpp
• GeneralsMD/Code/Libraries/Source/WWVegas/WW3D2/boxrobj.cpp
• GeneralsMD/Code/Libraries/Source/WWVegas/WW3D2/camera.cpp
• GeneralsMD/Code/Libraries/Source/WWVegas/WW3D2/dazzle.cpp
• GeneralsMD/Code/Libraries/Source/WWVegas/WW3D2/decalmsh.cpp
• GeneralsMD/Code/Libraries/Source/WWVegas/WW3D2/linegrp.cpp
• GeneralsMD/Code/Libraries/Source/WWVegas/WW3D2/mapper.cpp
• GeneralsMD/Code/Libraries/Source/WWVegas/WW3D2/mesh.cpp
• GeneralsMD/Code/Libraries/Source/WWVegas/WW3D2/render2d.cpp
• GeneralsMD/Code/Libraries/Source/WWVegas/WW3D2/scene.cpp
• GeneralsMD/Code/Tools/WorldBuilder/src/DrawObject.cpp

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