5 #define MAX_TEXTUREUNITS 8
7 #define POLYGONELEMENTS_MAXPOINTS 258
8 extern int polygonelements[768];
10 void GL_SetupView_Orientation_Identity(void);
11 void GL_SetupView_Orientation_FromEntity(matrix4x4_t *matrix);
12 void GL_SetupView_Mode_Perspective(double fovx, double fovy, double zNear, double zFar);
13 void GL_SetupView_Mode_PerspectiveInfiniteFarClip(double fovx, double fovy, double zNear);
14 void GL_SetupView_Mode_Ortho(double x1, double y1, double x2, double y2, double zNear, double zFar);
15 void GL_BlendFunc(int blendfunc1, int blendfunc2);
16 void GL_DepthMask(int state);
17 void GL_DepthTest(int state);
18 void GL_ColorMask(int r, int g, int b, int a);
19 void GL_VertexPointer(const float *p);
20 void GL_ColorPointer(const float *p);
21 void GL_Color(float cr, float cg, float cb, float ca);
22 void GL_ShowTrisColor(float cr, float cg, float cb, float ca);
23 void GL_TransformToScreen(const vec4_t in, vec4_t out);
24 void GL_LockArrays(int first, int count);
25 void GL_ActiveTexture(int num);
26 void GL_ClientActiveTexture(int num);
27 void GL_Scissor(int x, int y, int width, int height); // AK for DRAWQUEUE_SETCLIP
28 void GL_ScissorTest(int state); // AK for DRAWQUEUE_(RE)SETCLIP
29 void GL_Clear(int mask);
31 extern cvar_t gl_lockarrays;
32 extern cvar_t gl_mesh_copyarrays;
33 extern cvar_t gl_paranoid;
34 extern cvar_t gl_printcheckerror;
36 extern int c_meshelements, c_meshs;
38 //input to R_Mesh_State
42 int tex1d[MAX_TEXTUREUNITS];
43 int tex[MAX_TEXTUREUNITS];
44 int tex3d[MAX_TEXTUREUNITS];
45 int texcubemap[MAX_TEXTUREUNITS];
46 // texture combine settings
47 int texrgbscale[MAX_TEXTUREUNITS]; // used only if COMBINE is present
48 int texalphascale[MAX_TEXTUREUNITS]; // used only if COMBINE is present
49 int texcombinergb[MAX_TEXTUREUNITS]; // works with or without combine for some operations
50 int texcombinealpha[MAX_TEXTUREUNITS]; // does nothing without combine
52 const float *pointer_texcoord[MAX_TEXTUREUNITS];
56 // adds console variables and registers the render module (only call from GL_Init)
57 void gl_backend_init(void);
59 // starts mesh rendering for the frame
60 void R_Mesh_Start(void);
62 // ends mesh rendering for the frame
63 // (only valid after R_Mesh_Start)
64 void R_Mesh_Finish(void);
66 // sets up the requested transform matrix
67 void R_Mesh_Matrix(const matrix4x4_t *matrix);
69 // sets up the requested transform matrix
70 void R_Mesh_TextureMatrix(int unitnumber, const matrix4x4_t *matrix);
72 // set up the requested state
73 void R_Mesh_State_Texture(const rmeshstate_t *m);
76 void R_Mesh_Draw(int numverts, int numtriangles, const int *elements);
77 // renders a mesh as lines
78 void R_Mesh_Draw_ShowTris(int numverts, int numtriangles, const int *elements);
80 // saves a section of the rendered frame to a .tga or .jpg file
81 qboolean SCR_ScreenShot(char *filename, int x, int y, int width, int height, qboolean jpeg);
82 // used by R_Envmap_f and internally in backend, clears the frame
83 void R_ClearScreen(void);
84 // invoke refresh of frame
85 void SCR_UpdateScreen(void);
88 typedef struct rcachearrayrequest_s
90 // for use by the code that is requesting the array, these are not
91 // directly used but merely compared to determine if cache items are
93 const void *id_pointer1;
94 const void *id_pointer2;
95 const void *id_pointer3;
101 // array data pointer
104 rcachearrayrequest_t;
106 int R_Mesh_CacheArray(rcachearrayrequest_t *r);
108 extern float varray_vertex3f[65536*3];
109 extern float varray_color4f[65536*4];
110 extern float varray_texcoord2f[4][65536*2];
111 extern float varray_texcoord3f[4][65536*3];
112 extern float varray_normal3f[65536*3];
113 extern int earray_element3i[65536];