+// various flags from shaders, used for special effects not otherwise classified
+// TODO: support these features more directly
+#define Q3TEXTUREFLAG_TWOSIDED 1
+#define Q3TEXTUREFLAG_NOPICMIP 16
+#define Q3TEXTUREFLAG_POLYGONOFFSET 32
+#define Q3TEXTUREFLAG_REFRACTION 256
+#define Q3TEXTUREFLAG_REFLECTION 512
+#define Q3TEXTUREFLAG_WATERSHADER 1024
+#define Q3TEXTUREFLAG_CAMERA 2048
+#define Q3TEXTUREFLAG_TRANSPARENTSORT 4096
+
+#define Q3PATHLENGTH 64
+#define TEXTURE_MAXFRAMES 64
+#define Q3WAVEPARMS 4
+#define Q3DEFORM_MAXPARMS 3
+#define Q3SHADER_MAXLAYERS 8
+#define Q3RGBGEN_MAXPARMS 3
+#define Q3ALPHAGEN_MAXPARMS 1
+#define Q3TCGEN_MAXPARMS 6
+#define Q3TCMOD_MAXPARMS 6
+#define Q3MAXTCMODS 8
+#define Q3MAXDEFORMS 4
+
+typedef enum q3wavefunc_e
+{
+ Q3WAVEFUNC_NONE,
+ Q3WAVEFUNC_INVERSESAWTOOTH,
+ Q3WAVEFUNC_NOISE,
+ Q3WAVEFUNC_SAWTOOTH,
+ Q3WAVEFUNC_SIN,
+ Q3WAVEFUNC_SQUARE,
+ Q3WAVEFUNC_TRIANGLE,
+ Q3WAVEFUNC_COUNT
+}
+q3wavefunc_e;
+typedef int q3wavefunc_t;
+#define Q3WAVEFUNC_USER_COUNT 4
+#define Q3WAVEFUNC_USER_SHIFT 8 // use 8 bits for wave func type
+
+typedef enum q3deform_e
+{
+ Q3DEFORM_NONE,
+ Q3DEFORM_PROJECTIONSHADOW,
+ Q3DEFORM_AUTOSPRITE,
+ Q3DEFORM_AUTOSPRITE2,
+ Q3DEFORM_TEXT0,
+ Q3DEFORM_TEXT1,
+ Q3DEFORM_TEXT2,
+ Q3DEFORM_TEXT3,
+ Q3DEFORM_TEXT4,
+ Q3DEFORM_TEXT5,
+ Q3DEFORM_TEXT6,
+ Q3DEFORM_TEXT7,
+ Q3DEFORM_BULGE,
+ Q3DEFORM_WAVE,
+ Q3DEFORM_NORMAL,
+ Q3DEFORM_MOVE,
+ Q3DEFORM_COUNT
+}
+q3deform_t;
+
+typedef enum q3rgbgen_e
+{
+ Q3RGBGEN_IDENTITY,
+ Q3RGBGEN_CONST,
+ Q3RGBGEN_ENTITY,
+ Q3RGBGEN_EXACTVERTEX,
+ Q3RGBGEN_IDENTITYLIGHTING,
+ Q3RGBGEN_LIGHTINGDIFFUSE,
+ Q3RGBGEN_ONEMINUSENTITY,
+ Q3RGBGEN_ONEMINUSVERTEX,
+ Q3RGBGEN_VERTEX,
+ Q3RGBGEN_WAVE,
+ Q3RGBGEN_COUNT
+}
+q3rgbgen_t;
+
+typedef enum q3alphagen_e
+{
+ Q3ALPHAGEN_IDENTITY,
+ Q3ALPHAGEN_CONST,
+ Q3ALPHAGEN_ENTITY,
+ Q3ALPHAGEN_LIGHTINGSPECULAR,
+ Q3ALPHAGEN_ONEMINUSENTITY,
+ Q3ALPHAGEN_ONEMINUSVERTEX,
+ Q3ALPHAGEN_PORTAL,
+ Q3ALPHAGEN_VERTEX,
+ Q3ALPHAGEN_WAVE,
+ Q3ALPHAGEN_COUNT
+}
+q3alphagen_t;
+
+typedef enum q3tcgen_e
+{
+ Q3TCGEN_NONE,
+ Q3TCGEN_TEXTURE, // very common
+ Q3TCGEN_ENVIRONMENT, // common
+ Q3TCGEN_LIGHTMAP,
+ Q3TCGEN_VECTOR,
+ Q3TCGEN_COUNT
+}
+q3tcgen_t;
+
+typedef enum q3tcmod_e
+{
+ Q3TCMOD_NONE,
+ Q3TCMOD_ENTITYTRANSLATE,
+ Q3TCMOD_ROTATE,
+ Q3TCMOD_SCALE,
+ Q3TCMOD_SCROLL,
+ Q3TCMOD_STRETCH,
+ Q3TCMOD_TRANSFORM,
+ Q3TCMOD_TURBULENT,
+ Q3TCMOD_PAGE,
+ Q3TCMOD_COUNT
+}
+q3tcmod_t;
+
+typedef struct q3shaderinfo_layer_rgbgen_s
+{
+ q3rgbgen_t rgbgen;
+ float parms[Q3RGBGEN_MAXPARMS];
+ q3wavefunc_t wavefunc;
+ float waveparms[Q3WAVEPARMS];
+}
+q3shaderinfo_layer_rgbgen_t;
+
+typedef struct q3shaderinfo_layer_alphagen_s
+{
+ q3alphagen_t alphagen;
+ float parms[Q3ALPHAGEN_MAXPARMS];
+ q3wavefunc_t wavefunc;
+ float waveparms[Q3WAVEPARMS];
+}
+q3shaderinfo_layer_alphagen_t;
+
+typedef struct q3shaderinfo_layer_tcgen_s
+{
+ q3tcgen_t tcgen;
+ float parms[Q3TCGEN_MAXPARMS];
+}
+q3shaderinfo_layer_tcgen_t;
+
+typedef struct q3shaderinfo_layer_tcmod_s
+{
+ q3tcmod_t tcmod;
+ float parms[Q3TCMOD_MAXPARMS];
+ q3wavefunc_t wavefunc;
+ float waveparms[Q3WAVEPARMS];
+}
+q3shaderinfo_layer_tcmod_t;
+
+typedef struct q3shaderinfo_layer_s
+{
+ int alphatest;
+ int clampmap;
+ float framerate;
+ int numframes;
+ int dptexflags;
+ char** texturename;
+ int blendfunc[2];
+ q3shaderinfo_layer_rgbgen_t rgbgen;
+ q3shaderinfo_layer_alphagen_t alphagen;
+ q3shaderinfo_layer_tcgen_t tcgen;
+ q3shaderinfo_layer_tcmod_t tcmods[Q3MAXTCMODS];
+}
+q3shaderinfo_layer_t;
+
+typedef struct q3shaderinfo_deform_s
+{
+ q3deform_t deform;
+ float parms[Q3DEFORM_MAXPARMS];
+ q3wavefunc_t wavefunc;
+ float waveparms[Q3WAVEPARMS];
+}
+q3shaderinfo_deform_t;
+
+typedef enum dpoffsetmapping_technique_s
+{
+ OFFSETMAPPING_OFF, // none
+ OFFSETMAPPING_DEFAULT, // cvar-set
+ OFFSETMAPPING_LINEAR, // linear
+ OFFSETMAPPING_RELIEF // relief
+}dpoffsetmapping_technique_t;
+
+typedef enum dptransparentsort_category_e
+{
+ TRANSPARENTSORT_SKY,
+ TRANSPARENTSORT_DISTANCE,
+ TRANSPARENTSORT_HUD,
+}dptransparentsortcategory_t;
+
+typedef struct q3shaderinfo_s
+{
+ char name[Q3PATHLENGTH];
+#define Q3SHADERINFO_COMPARE_START surfaceparms
+ int surfaceparms;
+ int surfaceflags;
+ int textureflags;
+ int numlayers;
+ qboolean lighting;
+ qboolean vertexalpha;
+ qboolean textureblendalpha;
+ q3shaderinfo_layer_t layers[Q3SHADER_MAXLAYERS];
+ char skyboxname[Q3PATHLENGTH];
+ q3shaderinfo_deform_t deforms[Q3MAXDEFORMS];
+
+ // dp-specific additions:
+
+ // shadow control
+ qboolean dpnortlight;
+ qboolean dpshadow;
+ qboolean dpnoshadow;
+
+ // add collisions to all triangles of the surface
+ qboolean dpmeshcollisions;
+
+ // kill shader based on cvar checks
+ qboolean dpshaderkill;
+
+ // fake reflection
+ char dpreflectcube[Q3PATHLENGTH];
+
+ // reflection
+ float reflectmin; // when refraction is used, minimum amount of reflection (when looking straight down)
+ float reflectmax; // when refraction is used, maximum amount of reflection (when looking parallel to water)
+ float refractfactor; // amount of refraction distort (1.0 = like the cvar specifies)
+ vec4_t refractcolor4f; // color tint of refraction (including alpha factor)
+ float reflectfactor; // amount of reflection distort (1.0 = like the cvar specifies)
+ vec4_t reflectcolor4f; // color tint of reflection (including alpha factor)
+ float r_water_wateralpha; // additional wateralpha to apply when r_water is active
+ float r_water_waterscroll[2]; // water normalmapscrollblend - scale and speed
+
+ // offsetmapping
+ dpoffsetmapping_technique_t offsetmapping;
+ float offsetscale;
+ float offsetbias; // 0 is normal, 1 leads to alpha 0 being neutral and alpha 1 pushing "out"
+
+ // polygonoffset (only used if Q3TEXTUREFLAG_POLYGONOFFSET)
+ float biaspolygonoffset, biaspolygonfactor;
+
+ // transparent sort category
+ dptransparentsortcategory_t transparentsort;
+
+ // gloss
+ float specularscalemod;
+ float specularpowermod;
+
+ // rtlighting ambient addition
+ float rtlightambient;
+#define Q3SHADERINFO_COMPARE_END rtlightambient
+}
+q3shaderinfo_t;
+
+typedef struct texture_shaderpass_s
+{
+ qboolean alphatest; // FIXME: handle alphafunc properly
+ float framerate;
+ int numframes;
+ skinframe_t *skinframes[TEXTURE_MAXFRAMES];
+ int blendfunc[2];
+ q3shaderinfo_layer_rgbgen_t rgbgen;
+ q3shaderinfo_layer_alphagen_t alphagen;
+ q3shaderinfo_layer_tcgen_t tcgen;
+ q3shaderinfo_layer_tcmod_t tcmods[Q3MAXTCMODS];
+}
+texture_shaderpass_t;
+