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+/*
+===========================================================================
+Copyright (C) 1999-2005 Id Software, Inc.
+Copyright (C) 2000-2006 Tim Angus
+
+This file is part of Tremulous.
+
+Tremulous is free software; you can redistribute it
+and/or modify it under the terms of the GNU General Public License as
+published by the Free Software Foundation; either version 2 of the License,
+or (at your option) any later version.
+
+Tremulous is distributed in the hope that it will be
+useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Tremulous; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+===========================================================================
+*/
+//
+#ifndef __TR_TYPES_H
+#define __TR_TYPES_H
+
+
+#define	MAX_DLIGHTS		32			// can't be increased, because bit flags are used on surfaces
+#define	MAX_ENTITIES	1023		// can't be increased without changing drawsurf bit packing
+
+// renderfx flags
+#define	RF_MINLIGHT			1		// allways have some light (viewmodel, some items)
+#define	RF_THIRD_PERSON		2		// don't draw through eyes, only mirrors (player bodies, chat sprites)
+#define	RF_FIRST_PERSON		4		// only draw through eyes (view weapon, damage blood blob)
+#define	RF_DEPTHHACK		8		// for view weapon Z crunching
+#define	RF_NOSHADOW			64		// don't add stencil shadows
+
+#define RF_LIGHTING_ORIGIN	128		// use refEntity->lightingOrigin instead of refEntity->origin
+									// for lighting.  This allows entities to sink into the floor
+									// with their origin going solid, and allows all parts of a
+									// player to get the same lighting
+#define	RF_SHADOW_PLANE		256		// use refEntity->shadowPlane
+#define	RF_WRAP_FRAMES		512		// mod the model frames by the maxframes to allow continuous
+									// animation without needing to know the frame count
+
+// refdef flags
+#define RDF_NOWORLDMODEL	1		// used for player configuration screen
+#define RDF_HYPERSPACE		4		// teleportation effect
+
+typedef struct {
+	vec3_t		xyz;
+	float		st[2];
+	byte		modulate[4];
+} polyVert_t;
+
+typedef struct poly_s {
+	qhandle_t			hShader;
+	int					numVerts;
+	polyVert_t			*verts;
+} poly_t;
+
+typedef enum {
+	RT_MODEL,
+	RT_POLY,
+	RT_SPRITE,
+	RT_BEAM,
+	RT_RAIL_CORE,
+	RT_RAIL_RINGS,
+	RT_LIGHTNING,
+	RT_PORTALSURFACE,		// doesn't draw anything, just info for portals
+
+	RT_MAX_REF_ENTITY_TYPE
+} refEntityType_t;
+
+typedef struct {
+	refEntityType_t	reType;
+	int			renderfx;
+
+	qhandle_t	hModel;				// opaque type outside refresh
+
+	// most recent data
+	vec3_t		lightingOrigin;		// so multi-part models can be lit identically (RF_LIGHTING_ORIGIN)
+	float		shadowPlane;		// projection shadows go here, stencils go slightly lower
+
+	vec3_t		axis[3];			// rotation vectors
+	qboolean	nonNormalizedAxes;	// axis are not normalized, i.e. they have scale
+	float		origin[3];			// also used as MODEL_BEAM's "from"
+	int			frame;				// also used as MODEL_BEAM's diameter
+
+	// previous data for frame interpolation
+	float		oldorigin[3];		// also used as MODEL_BEAM's "to"
+	int			oldframe;
+	float		backlerp;			// 0.0 = current, 1.0 = old
+
+	// texturing
+	int			skinNum;			// inline skin index
+	qhandle_t	customSkin;			// NULL for default skin
+	qhandle_t	customShader;		// use one image for the entire thing
+
+	// misc
+	byte		shaderRGBA[4];		// colors used by rgbgen entity shaders
+	float		shaderTexCoord[2];	// texture coordinates used by tcMod entity modifiers
+	float		shaderTime;			// subtracted from refdef time to control effect start times
+
+	// extra sprite information
+	float		radius;
+	float		rotation;
+} refEntity_t;
+
+
+#define	MAX_RENDER_STRINGS			8
+#define	MAX_RENDER_STRING_LENGTH	32
+
+typedef struct {
+	int			x, y, width, height;
+	float		fov_x, fov_y;
+	vec3_t		vieworg;
+	vec3_t		viewaxis[3];		// transformation matrix
+
+	// time in milliseconds for shader effects and other time dependent rendering issues
+	int			time;
+
+	int			rdflags;			// RDF_NOWORLDMODEL, etc
+
+	// 1 bits will prevent the associated area from rendering at all
+	byte		areamask[MAX_MAP_AREA_BYTES];
+
+	// text messages for deform text shaders
+	char		text[MAX_RENDER_STRINGS][MAX_RENDER_STRING_LENGTH];
+} refdef_t;
+
+
+typedef enum {
+	STEREO_CENTER,
+	STEREO_LEFT,
+	STEREO_RIGHT
+} stereoFrame_t;
+
+
+/*
+** glconfig_t
+**
+** Contains variables specific to the OpenGL configuration
+** being run right now.  These are constant once the OpenGL
+** subsystem is initialized.
+*/
+typedef enum {
+	TC_NONE,
+	TC_S3TC
+} textureCompression_t;
+
+typedef enum {
+	GLDRV_ICD,					// driver is integrated with window system
+								// WARNING: there are tests that check for
+								// > GLDRV_ICD for minidriverness, so this
+								// should always be the lowest value in this
+								// enum set
+	GLDRV_STANDALONE,			// driver is a non-3Dfx standalone driver
+	GLDRV_VOODOO				// driver is a 3Dfx standalone driver
+} glDriverType_t;
+
+typedef enum {
+	GLHW_GENERIC,			// where everthing works the way it should
+	GLHW_3DFX_2D3D,			// Voodoo Banshee or Voodoo3, relevant since if this is
+							// the hardware type then there can NOT exist a secondary
+							// display adapter
+	GLHW_RIVA128,			// where you can't interpolate alpha
+	GLHW_RAGEPRO,			// where you can't modulate alpha on alpha textures
+	GLHW_PERMEDIA2			// where you don't have src*dst
+} glHardwareType_t;
+
+typedef struct {
+	char					renderer_string[MAX_STRING_CHARS];
+	char					vendor_string[MAX_STRING_CHARS];
+	char					version_string[MAX_STRING_CHARS];
+	char					extensions_string[BIG_INFO_STRING];
+
+	int						maxTextureSize;			// queried from GL
+	int						maxActiveTextures;		// multitexture ability
+
+	int						colorBits, depthBits, stencilBits;
+
+	glDriverType_t			driverType;
+	glHardwareType_t		hardwareType;
+
+	qboolean				deviceSupportsGamma;
+	textureCompression_t	textureCompression;
+	qboolean				textureEnvAddAvailable;
+
+	int						vidWidth, vidHeight;
+	// aspect is the screen's physical width / height, which may be different
+	// than scrWidth / scrHeight if the pixels are non-square
+	// normal screens should be 4/3, but wide aspect monitors may be 16/9
+	float					windowAspect;
+
+	int						displayFrequency;
+
+	// synonymous with "does rendering consume the entire screen?", therefore
+	// a Voodoo or Voodoo2 will have this set to TRUE, as will a Win32 ICD that
+	// used CDS.
+	qboolean				isFullscreen;
+	qboolean				stereoEnabled;
+	qboolean				smpActive;		// dual processor
+
+	qboolean				textureFilterAnisotropic;
+	int							maxAnisotropy;
+                
+} glconfig_t;
+
+// FIXME: VM should be OS agnostic .. in theory
+
+/*
+#ifdef Q3_VM
+
+#define _3DFX_DRIVER_NAME	"Voodoo"
+#define OPENGL_DRIVER_NAME	"Default"
+
+#elif defined(_WIN32)
+*/
+
+#if defined(Q3_VM) || defined(_WIN32)
+
+#define _3DFX_DRIVER_NAME	"3dfxvgl"
+#define OPENGL_DRIVER_NAME	"opengl32"
+
+#else
+
+#define _3DFX_DRIVER_NAME	"libMesaVoodooGL.so"
+// https://zerowing.idsoftware.com/bugzilla/show_bug.cgi?id=524
+#define OPENGL_DRIVER_NAME	"libGL.so.1"
+
+#endif	// !defined _WIN32
+
+#endif	// __TR_TYPES_H