gzdoom/src/swrenderer/drawers/r_draw.h

#pragma once

#include "r_defs.h"

struct FSWColormap;
struct FLightNode;
struct TriLight;

EXTERN_CVAR(Bool, r_multithreaded);
EXTERN_CVAR(Bool, r_magfilter);
EXTERN_CVAR(Bool, r_minfilter);
EXTERN_CVAR(Bool, r_mipmap);
EXTERN_CVAR(Float, r_lod_bias);
EXTERN_CVAR(Int, r_drawfuzz);
EXTERN_CVAR(Bool, r_drawtrans);
EXTERN_CVAR(Float, transsouls);
EXTERN_CVAR(Bool, r_dynlights);

namespace swrenderer
{
	struct vissprite_t;
	struct visplane_light;

	struct ShadeConstants
	{
		uint16_t light_alpha;
		uint16_t light_red;
		uint16_t light_green;
		uint16_t light_blue;
		uint16_t fade_alpha;
		uint16_t fade_red;
		uint16_t fade_green;
		uint16_t fade_blue;
		uint16_t desaturate;
		bool simple_shade;
	};

	extern double dc_texturemid;
	extern FLightNode *dc_light_list;
	extern visplane_light *ds_light_list;

	namespace drawerargs
	{
		extern int dc_pitch;
		extern lighttable_t *dc_colormap;
		extern FSWColormap *dc_fcolormap;
		extern ShadeConstants dc_shade_constants;
		extern fixed_t dc_light;
		extern int dc_x;
		extern int dc_yl;
		extern int dc_yh;
		extern fixed_t dc_iscale;
		extern fixed_t dc_texturefrac;
		extern uint32_t dc_textureheight;
		extern int dc_color;
		extern uint32_t dc_srccolor;
		extern uint32_t dc_srccolor_bgra;
		extern uint32_t *dc_srcblend;
		extern uint32_t *dc_destblend;
		extern fixed_t dc_srcalpha;
		extern fixed_t dc_destalpha;
		extern const uint8_t *dc_source;
		extern const uint8_t *dc_source2;
		extern uint32_t dc_texturefracx;
		extern uint8_t *dc_translation;
		extern uint8_t *dc_dest;
		extern uint8_t *dc_destorg;
		extern int dc_destheight;
		extern int dc_count;
		extern FVector3 dc_viewpos;
		extern FVector3 dc_viewpos_step;
		extern TriLight *dc_lights;
		extern int dc_num_lights;

		extern bool drawer_needs_pal_input;

		extern uint32_t dc_wall_texturefrac[4];
		extern uint32_t dc_wall_iscale[4];
		extern uint8_t *dc_wall_colormap[4];
		extern fixed_t dc_wall_light[4];
		extern const uint8_t *dc_wall_source[4];
		extern const uint8_t *dc_wall_source2[4];
		extern uint32_t dc_wall_texturefracx[4];
		extern uint32_t dc_wall_sourceheight[4];
		extern int dc_wall_fracbits;

		extern int ds_y;
		extern int ds_x1;
		extern int ds_x2;
		extern lighttable_t * ds_colormap;
		extern FSWColormap *ds_fcolormap;
		extern ShadeConstants ds_shade_constants;
		extern dsfixed_t ds_light;
		extern dsfixed_t ds_xfrac;
		extern dsfixed_t ds_yfrac;
		extern dsfixed_t ds_xstep;
		extern dsfixed_t ds_ystep;
		extern int ds_xbits;
		extern int ds_ybits;
		extern fixed_t ds_alpha;
		extern double ds_lod;
		extern const uint8_t *ds_source;
		extern bool ds_source_mipmapped;
		extern int ds_color;

		extern unsigned int dc_tspans[4][MAXHEIGHT];
		extern unsigned int *dc_ctspan[4];
		extern unsigned int *horizspan[4];
	}

	extern int ylookup[MAXHEIGHT];
	extern uint8_t shadetables[/*NUMCOLORMAPS*16*256*/];
	extern FDynamicColormap ShadeFakeColormap[16];
	extern uint8_t identitymap[256];
	extern FDynamicColormap identitycolormap;

	// Spectre/Invisibility.
	#define FUZZTABLE 50
	extern int fuzzoffset[FUZZTABLE + 1];
	extern int fuzzpos;
	extern int fuzzviewheight;

	extern bool r_swtruecolor;

	class SWPixelFormatDrawers
	{
	public:
		virtual ~SWPixelFormatDrawers() { }
		virtual void DrawWallColumn() = 0;
		virtual void DrawWallMaskedColumn() = 0;
		virtual void DrawWallAddColumn() = 0;
		virtual void DrawWallAddClampColumn() = 0;
		virtual void DrawWallSubClampColumn() = 0;
		virtual void DrawWallRevSubClampColumn() = 0;
		virtual void DrawSingleSkyColumn(uint32_t solid_top, uint32_t solid_bottom) = 0;
		virtual void DrawDoubleSkyColumn(uint32_t solid_top, uint32_t solid_bottom) = 0;
		virtual void DrawColumn() = 0;
		virtual void FillColumn() = 0;
		virtual void FillAddColumn() = 0;
		virtual void FillAddClampColumn() = 0;
		virtual void FillSubClampColumn() = 0;
		virtual void FillRevSubClampColumn() = 0;
		virtual void DrawFuzzColumn() = 0;
		virtual void DrawAddColumn() = 0;
		virtual void DrawTranslatedColumn() = 0;
		virtual void DrawTranslatedAddColumn() = 0;
		virtual void DrawShadedColumn() = 0;
		virtual void DrawAddClampColumn() = 0;
		virtual void DrawAddClampTranslatedColumn() = 0;
		virtual void DrawSubClampColumn() = 0;
		virtual void DrawSubClampTranslatedColumn() = 0;
		virtual void DrawRevSubClampColumn() = 0;
		virtual void DrawRevSubClampTranslatedColumn() = 0;
		virtual void DrawSpan() = 0;
		virtual void DrawSpanMasked() = 0;
		virtual void DrawSpanTranslucent() = 0;
		virtual void DrawSpanMaskedTranslucent() = 0;
		virtual void DrawSpanAddClamp() = 0;
		virtual void DrawSpanMaskedAddClamp() = 0;
		virtual void FillSpan() = 0;
		virtual void DrawTiltedSpan(int y, int x1, int x2, const FVector3 &plane_sz, const FVector3 &plane_su, const FVector3 &plane_sv, bool plane_shade, int planeshade, float planelightfloat, fixed_t pviewx, fixed_t pviewy) = 0;
		virtual void DrawColoredSpan(int y, int x1, int x2) = 0;
		virtual void DrawFogBoundaryLine(int y, int x1, int x2) = 0;
	};

	SWPixelFormatDrawers *R_ActiveDrawers();

	void R_InitColumnDrawers();
	void R_InitShadeMaps();
	void R_InitFuzzTable(int fuzzoff);

	bool R_SetPatchStyle(FRenderStyle style, fixed_t alpha, int translation, uint32_t color);
	bool R_SetPatchStyle(FRenderStyle style, float alpha, int translation, uint32_t color);
	void R_FinishSetPatchStyle(); // Call this after finished drawing the current thing, in case its style was STYLE_Shade
	bool R_GetTransMaskDrawers(void(**drawColumn)());

	const uint8_t *R_GetColumn(FTexture *tex, int col);

	void R_UpdateFuzzPos();

	// Sets dc_colormap and dc_light to their appropriate values depending on the output format (pal vs true color)
	void R_SetColorMapLight(FSWColormap *base_colormap, float light, int shade);
	void R_SetDSColorMapLight(FSWColormap *base_colormap, float light, int shade);
	void R_SetTranslationMap(lighttable_t *translation);

	void R_SetSpanTexture(FTexture *tex);
	void R_SetSpanColormap(FDynamicColormap *colormap, int shade);

	inline void R_DrawWallColumn() { R_ActiveDrawers()->DrawWallColumn(); }
	inline void R_DrawWallMaskedColumn() { R_ActiveDrawers()->DrawWallMaskedColumn(); }
	inline void R_DrawWallAddColumn() { R_ActiveDrawers()->DrawWallAddColumn(); }
	inline void R_DrawWallAddClampColumn() { R_ActiveDrawers()->DrawWallAddClampColumn(); }
	inline void R_DrawWallSubClampColumn() { R_ActiveDrawers()->DrawWallSubClampColumn(); }
	inline void R_DrawWallRevSubClampColumn() { R_ActiveDrawers()->DrawWallRevSubClampColumn(); }
	inline void R_DrawSingleSkyColumn(uint32_t solid_top, uint32_t solid_bottom) { R_ActiveDrawers()->DrawSingleSkyColumn(solid_top, solid_bottom); }
	inline void R_DrawDoubleSkyColumn(uint32_t solid_top, uint32_t solid_bottom) { R_ActiveDrawers()->DrawDoubleSkyColumn(solid_top, solid_bottom); }
	inline void R_DrawColumn() { R_ActiveDrawers()->DrawColumn(); }
	inline void R_FillColumn() { R_ActiveDrawers()->FillColumn(); }
	inline void R_FillAddColumn() { R_ActiveDrawers()->FillAddColumn(); }
	inline void R_FillAddClampColumn() { R_ActiveDrawers()->FillAddClampColumn(); }
	inline void R_FillSubClampColumn() { R_ActiveDrawers()->FillSubClampColumn(); }
	inline void R_FillRevSubClampColumn() { R_ActiveDrawers()->FillRevSubClampColumn(); }
	inline void R_DrawFuzzColumn() { R_ActiveDrawers()->DrawFuzzColumn(); }
	inline void R_DrawAddColumn() { R_ActiveDrawers()->DrawAddColumn(); }
	inline void R_DrawTranslatedColumn() { R_ActiveDrawers()->DrawTranslatedColumn(); }
	inline void R_DrawTlatedAddColumn() { R_ActiveDrawers()->DrawTranslatedAddColumn(); }
	inline void R_DrawShadedColumn() { R_ActiveDrawers()->DrawShadedColumn(); }
	inline void R_DrawAddClampColumn() { R_ActiveDrawers()->DrawAddClampColumn(); }
	inline void R_DrawAddClampTranslatedColumn() { R_ActiveDrawers()->DrawAddClampTranslatedColumn(); }
	inline void R_DrawSubClampColumn() { R_ActiveDrawers()->DrawSubClampColumn(); }
	inline void R_DrawSubClampTranslatedColumn() { R_ActiveDrawers()->DrawSubClampTranslatedColumn(); }
	inline void R_DrawRevSubClampColumn() { R_ActiveDrawers()->DrawRevSubClampColumn(); }
	inline void R_DrawRevSubClampTranslatedColumn() { R_ActiveDrawers()->DrawRevSubClampTranslatedColumn(); }
	inline void R_DrawSpan() { R_ActiveDrawers()->DrawSpan(); }
	inline void R_DrawSpanMasked() { R_ActiveDrawers()->DrawSpanMasked(); }
	inline void R_DrawSpanTranslucent() { R_ActiveDrawers()->DrawSpanTranslucent(); }
	inline void R_DrawSpanMaskedTranslucent() { R_ActiveDrawers()->DrawSpanMaskedTranslucent(); }
	inline void R_DrawSpanAddClamp() { R_ActiveDrawers()->DrawSpanAddClamp(); }
	inline void R_DrawSpanMaskedAddClamp() { R_ActiveDrawers()->DrawSpanMaskedAddClamp(); }
	inline void R_FillSpan() { R_ActiveDrawers()->FillSpan(); }
	inline void R_DrawTiltedSpan(int y, int x1, int x2, const FVector3 &plane_sz, const FVector3 &plane_su, const FVector3 &plane_sv, bool plane_shade, int planeshade, float planelightfloat, fixed_t pviewx, fixed_t pviewy)
	{
		R_ActiveDrawers()->DrawTiltedSpan(y, x1, x2, plane_sz, plane_su, plane_sv, plane_shade, planeshade, planelightfloat, pviewx, pviewy);
	}
	inline void R_DrawColoredSpan(int y, int x1, int x2) { R_ActiveDrawers()->DrawColoredSpan(y, x1, x2); }
	inline void R_DrawFogBoundaryLine(int y, int x1, int x2) { R_ActiveDrawers()->DrawFogBoundaryLine(y, x1, x2); }
}