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