fteqw/engine/gl/shader.h

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#define SHADER_PASS_MAX 8
#define SHADER_MAX_TC_MODS 8
#define SHADER_DEFORM_MAX 8
#define SHADER_MAX_ANIMFRAMES 8
#define SHADER_ANIM_FRAMES_MAX 16
typedef enum {
SHADER_BSP,
SHADER_BSP_VERTEX,
SHADER_BSP_FLARE,
SHADER_MD3,
SHADER_2D
} shadertype_t;
typedef enum {
SHADER_SORT_NONE,
SHADER_SORT_SKY,
SHADER_SORT_PORTAL,
SHADER_SORT_OPAQUE,
SHADER_SORT_BANNER,
SHADER_SORT_UNDERWATER,
SHADER_SORT_ADDITIVE,
SHADER_SORT_NEAREST
} shadersort_t;
typedef enum {
MF_NONE = 1<<0,
MF_NORMALS = 1<<1,
MF_TRNORMALS = 1<<2,
MF_COLORS = 1<<3,
MF_STCOORDS = 1<<4,
MF_LMCOORDS = 1<<5,
MF_NOCULL = 1<<6,
MF_NONBATCHED = 1<<7
} meshfeatures_t;
//colour manipulation
typedef struct
{
enum {
SHADER_FUNC_SIN,
SHADER_FUNC_TRIANGLE,
SHADER_FUNC_SQUARE,
SHADER_FUNC_SAWTOOTH,
SHADER_FUNC_INVERSESAWTOOTH,
SHADER_FUNC_NOISE,
SHADER_FUNC_CONSTANT
} type; // SHADER_FUNC enum
float args[4]; // offset, amplitude, phase_offset, rate
} shaderfunc_t;
#if _MSC_VER || __BORLANDC__
typedef unsigned __int64 msortkey_t;
#else
typedef unsigned long long msortkey_t;
#endif
typedef struct meshbuffer_s
{
msortkey_t sortkey;
int infokey; // lightmap number or mesh number
unsigned int dlightbits;
entity_t *entity;
struct shader_s *shader;
mesh_t *mesh;
struct mfog_s *fog;
} meshbuffer_t;
//tecture coordinate manipulation
typedef struct
{
enum {
SHADER_TCMOD_NONE, //bug
SHADER_TCMOD_SCALE, //some sorta tabled deformation
SHADER_TCMOD_SCROLL, //boring moving texcoords with time
SHADER_TCMOD_STRETCH, //constant factor
SHADER_TCMOD_ROTATE,
SHADER_TCMOD_MAX,
SHADER_TCMOD_TRANSFORM,
SHADER_TCMOD_TURB
} type;
float args[6];
} tcmod_t;
//vertex positioning manipulation.
typedef struct
{
enum {
DEFORMV_NONE, //bug
DEFORMV_MOVE,
DEFORMV_WAVE,
DEFORMV_NORMAL,
DEFORMV_BULGE,
DEFORMV_AUTOSPRITE,
DEFORMV_AUTOSPRITE2,
DEFORMV_PROJECTION_SHADOW
} type;
float args[4];
shaderfunc_t func;
} deformv_t;
typedef struct shaderpass_s {
int numMergedPasses;
shaderfunc_t rgbgen_func;
shaderfunc_t alphagen_func;
unsigned int blendsrc, blenddst; // glBlendFunc args
unsigned int blendmode, envmode;
unsigned int combinesrc0, combinesrc1, combinemode;
unsigned int depthfunc; // glDepthFunc arg
enum {
SHADER_ALPHA_GT0,
SHADER_ALPHA_LT128,
SHADER_ALPHA_GE128
} alphafunc;
enum {
TC_GEN_BASE, //basic specified texture coords
TC_GEN_LIGHTMAP, //use loaded lightmap coords
TC_GEN_ENVIRONMENT,
TC_GEN_DOTPRODUCT,
TC_GEN_VECTOR
} tcgen;
enum {
RGB_GEN_WAVE,
RGB_GEN_ENTITY,
RGB_GEN_ONE_MINUS_ENTITY,
RGB_GEN_VERTEX,
RGB_GEN_EXACT_VERTEX,
RGB_GEN_ONE_MINUS_VERTEX,
RGB_GEN_IDENTITY_LIGHTING,
RGB_GEN_IDENTITY,
RGB_GEN_CONST,
RGB_GEN_UNKNOWN,
RGB_GEN_LIGHTING_DIFFUSE,
RGB_GEN_TOPCOLOR,
RGB_GEN_BOTTOMCOLOR
} rgbgen;
enum {
ALPHA_GEN_ENTITY,
ALPHA_GEN_WAVE,
ALPHA_GEN_PORTAL,
ALPHA_GEN_SPECULAR,
ALPHA_GEN_IDENTITY,
ALPHA_GEN_VERTEX,
ALPHA_GEN_CONST
} alphagen;
int numtcmods;
tcmod_t tcmods[SHADER_MAX_TC_MODS];
void (*flush) (meshbuffer_t *mb, struct shaderpass_s *pass);
int anim_numframes;
int anim_frames[SHADER_MAX_ANIMFRAMES];
float anim_fps;
unsigned int texturetype;
enum {
SHADER_PASS_BLEND = 1 << 0,
SHADER_PASS_ALPHAFUNC = 1 << 1,
SHADER_PASS_DEPTHWRITE = 1 << 2,
SHADER_PASS_VIDEOMAP = 1 << 3,
SHADER_PASS_DETAIL = 1 << 4,
SHADER_PASS_LIGHTMAP = 1 << 5,
SHADER_PASS_DELUXMAP = 1 << 6,
SHADER_PASS_NOCOLORARRAY = 1<< 7,
SHADER_PASS_ANIMMAP = 1 << 8
} flags;
} shaderpass_t;
typedef struct
{
mesh_t meshes[5];
int farbox_textures[6];
int nearbox_textures[6];
} skydome_t;
typedef struct shader_s {
int numpasses; //careful... 0 means it's not loaded... and not actually a proper shader.
struct shader_s *next;
char name[MAX_QPATH];
//end of shared fields.
byte_vec4_t fog_color;
float fog_dist;
int numdeforms;
deformv_t deforms[SHADER_DEFORM_MAX];
enum {
SHADER_SKY = 1 << 0,
SHADER_NOMIPMAPS = 1 << 1,
SHADER_NOPICMIP = 1 << 2,
SHADER_CULL_FRONT = 1 << 3,
SHADER_CULL_BACK = 1 << 4,
SHADER_DEFORMV_BULGE = 1 << 5,
SHADER_AUTOSPRITE = 1 << 6,
SHADER_FLARE = 1 << 7,
SHADER_POLYGONOFFSET = 1 << 8,
SHADER_ENTITY_MERGABLE = 1 << 9,
SHADER_VIDEOMAP = 1 << 10,
SHADER_DEPTHWRITE = 1 << 11,
SHADER_AGEN_PORTAL = 1 << 12,
SHADER_BLEND = 1 << 13, //blend or alphatest (not 100% opaque).
SHADER_NODRAW = 1 << 14 //parsed only to pee off developers when they forget it on no-pass shaders.
} flags;
shaderpass_t passes[SHADER_PASS_MAX];
shadersort_t sort;
skydome_t *skydome;
meshfeatures_t features;
int registration_sequence;
} shader_t;
void R_RenderMeshGeneric ( meshbuffer_t *mb, shaderpass_t *pass );
void R_RenderMeshCombined ( meshbuffer_t *mb, shaderpass_t *pass );
void R_RenderMeshMultitextured ( meshbuffer_t *mb, shaderpass_t *pass );
shader_t *R_RegisterPic (char *name);
shader_t *R_RegisterShader (char *name);
shader_t *R_RegisterShader_Vertex (char *name);
shader_t *R_RegisterShader_Flare (char *name);
shader_t *R_RegisterSkin (char *name);
shader_t *R_RegisterCustom (char *name, void(*defaultgen)(char *name, shader_t*));
void Shader_DefaultSkinShell(char *shortname, shader_t *s);
void R_BackendInit (void);
void Shader_Shutdown (void);
qboolean Shader_Init (void);