5 #define MAX_TEXTUREUNITS 8
7 #define POLYGONELEMENTS_MAXPOINTS 258
8 extern int polygonelements[768];
10 extern cvar_t gl_lockarrays;
12 extern int c_meshtris, c_meshs;
14 //input to R_Mesh_State
17 int depthwrite; // force depth writing enabled even if polygon is not opaque
18 int depthdisable; // disable depth read/write entirely
22 int tex[MAX_TEXTUREUNITS];
23 int texrgbscale[MAX_TEXTUREUNITS]; // used only if COMBINE is present
27 // overbright rendering scale for the current state
28 extern float mesh_colorscale;
29 extern float *varray_vertex;
30 extern float *varray_color;
31 extern float *varray_texcoord[MAX_TEXTUREUNITS];
32 extern int mesh_maxverts;
34 // adds console variables and registers the render module (only call from GL_Init)
35 void gl_backend_init(void);
37 // starts mesh rendering for the frame
38 void R_Mesh_Start(float farclip);
40 // ends mesh rendering for the frame
41 // (only valid after R_Mesh_Start)
42 void R_Mesh_Finish(void);
44 // clears depth buffer, used for masked sky rendering
45 // (only valid between R_Mesh_Start and R_Mesh_Finish)
46 void R_Mesh_ClearDepth(void);
48 // sets up the requested transform matrix
49 void R_Mesh_Matrix(const matrix4x4_t *matrix);
51 // sets up the requested state
52 void R_Mesh_State(const rmeshstate_t *m);
54 // enlarges vertex arrays if they are too small
55 #define R_Mesh_ResizeCheck(numverts) if ((numverts) > mesh_maxverts) _R_Mesh_ResizeCheck(numverts);
56 void _R_Mesh_ResizeCheck(int numverts);
58 // renders the mesh in the varray_* buffers
59 void R_Mesh_Draw(int numverts, int numtriangles, int *elements);
61 // saves a section of the rendered frame to a .tga file
62 qboolean SCR_ScreenShot(char *filename, int x, int y, int width, int height);
63 // used by R_Envmap_f and internally in backend, clears the frame
64 void R_ClearScreen(void);
65 // invoke refresh of frame
66 void SCR_UpdateScreen (void);