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fteqw/engine/gl/shader.h

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#ifndef SHADER_H
#define SHADER_H
typedef void (shader_gen_t)(char *name, shader_t*, const void *args);
#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
#define SHADER_PROGPARMS_MAX 16
typedef enum {
SHADER_BSP,
SHADER_BSP_VERTEX,
SHADER_BSP_FLARE,
SHADER_MD3,
SHADER_2D
} shadertype_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;
//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;
enum
{
/*source and dest factors match each other for easier parsing
but they're not meant to ever be set on the shader itself
NONE is also invalid, and is used to signify disabled, it should never be set on only one
*/
SBITS_SRCBLEND_NONE = 0x00000000,
SBITS_SRCBLEND_ZERO = 0x00000001,
SBITS_SRCBLEND_ONE = 0x00000002,
SBITS_SRCBLEND_DST_COLOR = 0x00000003,
SBITS_SRCBLEND_ONE_MINUS_DST_COLOR = 0x00000004,
SBITS_SRCBLEND_SRC_ALPHA = 0x00000005,
SBITS_SRCBLEND_ONE_MINUS_SRC_ALPHA = 0x00000006,
SBITS_SRCBLEND_DST_ALPHA = 0x00000007,
SBITS_SRCBLEND_ONE_MINUS_DST_ALPHA = 0x00000008,
SBITS_SRCBLEND_SRC_COLOR_INVALID = 0x00000009,
SBITS_SRCBLEND_ONE_MINUS_SRC_COLOR_INVALID = 0x0000000a,
SBITS_SRCBLEND_ALPHA_SATURATE = 0x0000000b,
#define SBITS_SRCBLEND_BITS 0x0000000f
/*must match src factors, just shifted 4*/
SBITS_DSTBLEND_NONE = 0x00000000,
SBITS_DSTBLEND_ZERO = 0x00000010,
SBITS_DSTBLEND_ONE = 0x00000020,
SBITS_DSTBLEND_DST_COLOR_INVALID = 0x00000030,
SBITS_DSTBLEND_ONE_MINUS_DST_COLOR_INVALID = 0x00000040,
SBITS_DSTBLEND_SRC_ALPHA = 0x00000050,
SBITS_DSTBLEND_ONE_MINUS_SRC_ALPHA = 0x00000060,
SBITS_DSTBLEND_DST_ALPHA = 0x00000070,
SBITS_DSTBLEND_ONE_MINUS_DST_ALPHA = 0x00000080,
SBITS_DSTBLEND_SRC_COLOR = 0x00000090,
SBITS_DSTBLEND_ONE_MINUS_SRC_COLOR = 0x000000a0,
SBITS_DSTBLEND_ALPHA_SATURATE_INVALID = 0x000000b0,
#define SBITS_DSTBLEND_BITS 0x000000f0
#define SBITS_BLEND_BITS (SBITS_SRCBLEND_BITS|SBITS_DSTBLEND_BITS)
SBITS_ATEST_NONE = 0x00000000,
SBITS_ATEST_GT0 = 0x00000100,
SBITS_ATEST_LT128 = 0x00000200,
SBITS_ATEST_GE128 = 0x00000300,
#define SBITS_ATEST_BITS 0x00000f00
SBITS_MISC_DEPTHWRITE = 0x00001000,
SBITS_MISC_NODEPTHTEST = 0x00002000,
SBITS_MISC_DEPTHEQUALONLY = 0x00004000,
SBITS_MISC_DEPTHCLOSERONLY = 0x00008000,
#define SBITS_MISC_BITS 0x0000f000
SBITS_MASK_RED = 0x00010000,
SBITS_MASK_GREEN = 0x00020000,
SBITS_MASK_BLUE = 0x00040000,
SBITS_MASK_ALPHA = 0x00080000,
#define SBITS_MASK_BITS 0x000f0000
};
typedef struct shaderpass_s {
int numMergedPasses;
#ifndef NOMEDIA
struct cin_s *cin;
#endif
unsigned int shaderbits;
enum {
PBM_MODULATE,
PBM_OVERBRIGHT,
PBM_DECAL,
PBM_ADD,
PBM_DOTPRODUCT,
PBM_REPLACE
} blendmode;
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;
shaderfunc_t rgbgen_func;
enum {
ALPHA_GEN_ENTITY,
ALPHA_GEN_WAVE,
ALPHA_GEN_PORTAL,
ALPHA_GEN_SPECULAR,
ALPHA_GEN_IDENTITY,
ALPHA_GEN_VERTEX,
ALPHA_GEN_CONST
} alphagen;
shaderfunc_t alphagen_func;
enum {
TC_GEN_BASE, //basic specified texture coords
TC_GEN_LIGHTMAP, //use loaded lightmap coords
TC_GEN_ENVIRONMENT,
TC_GEN_DOTPRODUCT,
TC_GEN_VECTOR,
TC_GEN_FOG,
//these are really for use only in glsl stuff or perhaps cubemaps, as they generate 3d coords.
TC_GEN_NORMAL,
TC_GEN_SVECTOR,
TC_GEN_TVECTOR,
TC_GEN_SKYBOX,
TC_GEN_WOBBLESKY,
TC_GEN_REFLECT,
} tcgen;
int numtcmods;
tcmod_t tcmods[SHADER_MAX_TC_MODS];
int anim_numframes;
texid_t anim_frames[SHADER_MAX_ANIMFRAMES];
float anim_fps;
// unsigned int texturetype;
enum {
T_GEN_SINGLEMAP, //single texture specified in the shader
T_GEN_ANIMMAP, //animating sequence of textures specified in the shader
T_GEN_LIGHTMAP, //world light samples
T_GEN_DELUXMAP, //world light directions
T_GEN_SHADOWMAP, //light's depth values.
T_GEN_DIFFUSE, //texture's default diffuse texture
T_GEN_NORMALMAP, //texture's default normalmap
T_GEN_SPECULAR, //texture's default specular texture
T_GEN_UPPEROVERLAY, //texture's default personal colour
T_GEN_LOWEROVERLAY, //texture's default team colour
T_GEN_FULLBRIGHT, //texture's default fullbright overlay
T_GEN_CURRENTRENDER,//copy the current screen to a texture, and draw that
T_GEN_VIDEOMAP, //use the media playback as an image source, updating each frame for which it is visible
T_GEN_SKYBOX, //use a skybox instead, otherwise T_GEN_SINGLEMAP
} texgen;
enum {
SHADER_PASS_NOMIPMAP = 1<<1,
SHADER_PASS_CLAMP = 1<<2,
SHADER_PASS_NOCOLORARRAY = 1<< 3,
//FIXME: remove these
SHADER_PASS_VIDEOMAP = 1 << 4,
SHADER_PASS_DETAIL = 1 << 5,
SHADER_PASS_LIGHTMAP = 1 << 6,
SHADER_PASS_DELUXMAP = 1 << 7,
SHADER_PASS_ANIMMAP = 1 << 8
} flags;
} shaderpass_t;
typedef struct
{
texid_t farbox_textures[6];
texid_t nearbox_textures[6];
} skydome_t;
enum{
PERMUTATION_GENERIC = 0,
PERMUTATION_BUMPMAP = 1,
PERMUTATION_SPECULAR = 2,
PERMUTATION_FULLBRIGHT = 4,
PERMUTATION_LOWER = 8,
PERMUTATION_UPPER = 16,
PERMUTATION_OFFSET = 32,
PERMUTATIONS = 64
};
typedef struct {
enum shaderprogparmtype_e {
SP_BAD, //never set (hopefully)
SP_ATTR_VERTEX,
SP_ATTR_COLOUR,
SP_ATTR_TEXCOORD,
SP_ATTR_LMCOORD,
SP_ATTR_NORMALS,
SP_ATTR_SNORMALS,
SP_ATTR_TNORMALS,
SP_FIRSTUNIFORM, //never set
/*entity properties*/
SP_ENTCOLOURS,
SP_TOPCOLOURS,
SP_BOTTOMCOLOURS,
SP_TIME,
SP_E_L_DIR, /*these light values are non-dynamic light as in classic quake*/
SP_E_L_MUL,
SP_E_L_AMBIENT,
SP_EYEPOS,
SP_ENTMATRIX,
SP_VIEWMATRIX,
SP_MODELMATRIX,
SP_MODELVIEWMATRIX,
SP_PROJECTIONMATRIX,
SP_MODELVIEWPROJECTIONMATRIX,
SP_RENDERTEXTURESCALE, /*multiplier for currentrender->texcoord*/
SP_LIGHTRADIUS, /*these light values are realtime lighting*/
SP_LIGHTCOLOUR,
SP_LIGHTPOSITION,
//things that are set immediatly
SP_FIRSTIMMEDIATE, //never set
SP_CONSTI,
SP_CONSTF,
SP_CVARI,
SP_CVARF,
SP_CVAR3F,
SP_TEXTURE
} type;
unsigned int handle[PERMUTATIONS];
union
{
int ival;
float fval;
void *pval;
};
} shaderprogparm_t;
union programhandle_u
{
int glsl;
#ifdef D3DQUAKE
struct
{
void *vert;
void *frag;
} hlsl;
#endif
};
typedef struct programshared_s
{
int refs;
qboolean nofixedcompat;
union programhandle_u handle[PERMUTATIONS];
int numparams;
shaderprogparm_t parm[SHADER_PROGPARMS_MAX];
} program_t;
typedef struct {
float factor;
float unit;
} polyoffset_t;
struct shader_s
{
int uses;
int width;
int height;
int numpasses;
texnums_t defaulttextures;
struct shader_s *next;
char name[MAX_QPATH];
//end of shared fields.
byte_vec4_t fog_color;
float fog_dist;
float portaldist;
int numdeforms;
deformv_t deforms[SHADER_DEFORM_MAX];
polyoffset_t polyoffset;
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_REMOVED = 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.
SHADER_NODLIGHT = 1 << 15, //from surfaceflags
SHADER_HASLIGHTMAP = 1 << 16,
SHADER_HASTOPBOTTOM = 1 << 17,
} flags;
program_t *prog;
shaderpass_t passes[SHADER_PASS_MAX];
shadersort_t sort;
skydome_t *skydome;
shader_gen_t *generator;
const char *genargs;
meshfeatures_t features;
bucket_t bucket;
};
#define MAX_SHADERS 2048 //fixme: this takes a lot of bss in the r_shaders list
extern shader_t *r_shaders;
extern int be_maxpasses;
void R_UnloadShader(shader_t *shader);
shader_t *R_RegisterPic (char *name);
shader_t *R_RegisterShader (char *name, const char *shaderscript);
shader_t *R_RegisterShader_Lightmap (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, shader_gen_t *defaultgen, const void *args);
void R_BuildDefaultTexnums(texnums_t *tn, shader_t *shader);
cin_t *R_ShaderGetCinematic(shader_t *s);
cin_t *R_ShaderFindCinematic(char *name);
void Shader_DefaultSkinShell(char *shortname, shader_t *s, const void *args);
void Shader_DefaultBSPLM(char *shortname, shader_t *s, const void *args);
void Shader_DefaultBSPQ1(char *shortname, shader_t *s, const void *args);
void Shader_DefaultBSPQ2(char *shortname, shader_t *s, const void *args);
void Shader_DefaultSkybox(char *shortname, shader_t *s, const void *args);
void Shader_DefaultCinematic(char *shortname, shader_t *s, const void *args);
void Shader_DefaultScript(char *shortname, shader_t *s, const void *args);
void Shader_DoReload(void);
void R_BackendInit (void);
void Shader_Shutdown (void);
qboolean Shader_Init (void);
void Shader_NeedReload(void);
mfog_t *CM_FogForOrigin(vec3_t org);
#define BEF_FORCEDEPTHWRITE 1
#define BEF_FORCEDEPTHTEST 2
#define BEF_FORCEADDITIVE 4 //blend dest = GL_ONE
#define BEF_FORCETRANSPARENT 8 //texenv replace -> modulate
#define BEF_FORCENODEPTH 16 //disables any and all depth.
#define BEF_PUSHDEPTH 32 //additional polygon offset
#define BEF_NODLIGHT 64 //don't use a dlight pass
#define BEF_NOSHADOWS 128 //don't appear in shadows
#ifdef GLQUAKE
void GLBE_Init(void);
void GLBE_SelectMode(backendmode_t mode);
void GLBE_DrawMesh_List(shader_t *shader, int nummeshes, mesh_t **mesh, vbo_t *vbo, texnums_t *texnums, unsigned int beflags);
void GLBE_DrawMesh_Single(shader_t *shader, mesh_t *meshchain, vbo_t *vbo, texnums_t *texnums, unsigned int beflags);
void GLBE_SubmitBatch(batch_t *batch);
batch_t *GLBE_GetTempBatch(void);
void GLBE_GenBrushModelVBO(model_t *mod);
void GLBE_ClearVBO(vbo_t *vbo);
void GLBE_UploadAllLightmaps(void);
void GLBE_DrawWorld (qbyte *vis);
qboolean GLBE_LightCullModel(vec3_t org, model_t *model);
void GLBE_SelectEntity(entity_t *ent);
#endif
#ifdef D3DQUAKE
void D3DBE_Init(void);
void D3DBE_SelectMode(backendmode_t mode);
void D3DBE_DrawMesh_List(shader_t *shader, int nummeshes, mesh_t **mesh, vbo_t *vbo, texnums_t *texnums, unsigned int beflags);
void D3DBE_DrawMesh_Single(shader_t *shader, mesh_t *meshchain, vbo_t *vbo, texnums_t *texnums, unsigned int beflags);
void D3DBE_SubmitBatch(batch_t *batch);
batch_t *D3DBE_GetTempBatch(void);
void D3DBE_GenBrushModelVBO(model_t *mod);
void D3DBE_ClearVBO(vbo_t *vbo);
void D3DBE_UploadAllLightmaps(void);
void D3DBE_DrawWorld (qbyte *vis);
qboolean D3DBE_LightCullModel(vec3_t org, model_t *model);
void D3DBE_SelectEntity(entity_t *ent);
union programhandle_u D3DShader_CreateProgram (char **precompilerconstants, char *vert, char *frag);
void D3DShader_Init(void);
#endif
//Asks the backend to invoke DrawMeshChain for each surface, and to upload lightmaps as required
void BE_DrawNonWorld (void);
void D3DBE_Reset(qboolean before);
//Builds a hardware shader from the software representation
void BE_GenerateProgram(shader_t *shader);
#ifdef RTLIGHTS
void BE_PushOffsetShadow(qboolean foobar);
//sets up gl for depth-only FIXME
void BE_SetupForShadowMap(void);
//Called from shadowmapping code into backend
void BE_BaseEntTextures(void);
//Draws lights, called from the backend
void Sh_DrawLights(qbyte *vis);
void Sh_Shutdown(void);
//Draws the depth of ents in the world near the current light
void BE_BaseEntShadowDepth(void);
//Sets the given light+colour to be the current one that everything is to be lit/culled by.
void BE_SelectDLight(dlight_t *dl, vec3_t colour);
#endif
#endif
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