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Lightmapped water#1518

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a1batross wants to merge 12 commits intomasterFWGS/xash3d-fwgs:masterfrom litwaterFWGS/xash3d-fwgs:litwaterCopy head branch name to clipboard

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Commits on Aug 22, 2024

• ref: gl: add cvar gl_litwater to enable lightmapped water

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• ref: gl: build lightmap texcoords for subdivided SURF_DRAWTURB surface

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• ref: gl: split lightmap chain handling from R_RenderBrushPoly

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• ref: gl: add lightmapped water rendering, including wavy water

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• ref: gl: support lightmapped water on transparent brushes

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Commits on Aug 25, 2024

• ref: gl: discard surfaces that don't have lightmaps in one place, remove unneeded checks

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• ref: gl: move EmitWaterPolys to gl_rsurf and make it static. Slight refactoring, don't set SURF_DRAWTURB_QUADS if context isn't OpenGL

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• ref: gl: don't draw water backfaces when drawing lightmapped water

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• ref: gl: add cvars to scale and set minimum light for lightmapped water

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Commits on Aug 26, 2024

• engine: add _litwater worldspawn key to allow mod developers to declare lightmapped water support

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• ref: gl: implement reading engine's world flag and extra info for lightmapped water

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• Documentation: extensions: add documentation piece for lightmapped water

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