got rid of R_Mesh_Draw and R_Mesh_DrawPolygon, now all 3D geometry is drawn using...

[xonotic/darkplaces.git] / gl_backend.h

diff --git a/gl_backend.h b/gl_backend.h
index bde446bb56ac0e98369589354e9343f3f9a8891c..2efbd9a0ff90a38861a2a2d06d7c1ee8d45cbc9c 100644 (file)
--- a/gl_backend.h
+++ b/gl_backend.h
@@ -1,7 +1,10 @@
 
-#define MAX_TEXTUREUNITS 4
+#ifndef GL_BACKEND_H
+#define GL_BACKEND_H
 
-extern int c_meshtris;
+#define MAX_TEXTUREUNITS 8
+
+extern int c_meshtris, c_meshs, c_transtris, c_transmeshs;
 
 typedef struct
 {
@@ -17,26 +20,70 @@ typedef struct
        int vertexstep;
        float *color;
        int colorstep;
-       // if color is NULL, these are used for all vertices
-       float cr, cg, cb, ca;
+       float cr, cg, cb, ca; // if color is NULL, these are used for all vertices
        int tex[MAX_TEXTUREUNITS];
        float *texcoords[MAX_TEXTUREUNITS];
        int texcoordstep[MAX_TEXTUREUNITS];
-       float texrgbscale[MAX_TEXTUREUNITS]; // used only if COMBINE is present
+       int texrgbscale[MAX_TEXTUREUNITS]; // used only if COMBINE is present
 }
 rmeshinfo_t;
 
+typedef struct
+{
+       //input to R_Mesh_Draw_GetBuffer
+       int transparent;
+       int depthwrite; // force depth writing enabled even if polygon is not opaque
+       int depthdisable; // disable depth read/write entirely
+       int blendfunc1;
+       int blendfunc2;
+       int numtriangles;
+       int numverts;
+       int tex[MAX_TEXTUREUNITS];
+       int texrgbscale[MAX_TEXTUREUNITS]; // used only if COMBINE is present
+
+       // output
+       int *index;
+       float *vertex;
+       float *color;
+       float colorscale;
+       float *texcoords[MAX_TEXTUREUNITS];
+}
+rmeshbufferinfo_t;
+
 // adds console variables and registers the render module (only call from GL_Init)
 void gl_backend_init(void);
-// sets up mesh renderer for the frame
-void R_Mesh_Clear(void);
-// renders queued meshs
+
+// starts mesh rendering for the frame
+void R_Mesh_Start(float farclip);
+
+// ends mesh rendering for the frame
+// (only valid after R_Mesh_Start)
+void R_Mesh_Finish(void);
+
+// clears depth buffer, used for masked sky rendering
+// (only valid between R_Mesh_Start and R_Mesh_Finish)
+void R_Mesh_ClearDepth(void);
+
+// renders current batch of meshs
+// (only valid between R_Mesh_Start and R_Mesh_Finish)
 void R_Mesh_Render(void);
-// queues a mesh to be rendered (invokes Render if queue is full)
-void R_Mesh_Draw(const rmeshinfo_t *m);
+
 // renders the queued transparent meshs
+// (only valid between R_Mesh_Start and R_Mesh_Finish)
 void R_Mesh_AddTransparent(void);
-// ease-of-use frontend to R_Mesh_Draw, set up meshinfo, except for index and numtriangles and numverts, then call this
-void R_Mesh_DrawPolygon(rmeshinfo_t *m, int numverts);
-// ease-of-use frontend to R_Mesh_Draw for particles, no speed gain
-void R_Mesh_DrawParticle(vec3_t org, vec3_t right, vec3_t up, vec_t scale, int texnum, float cr, float cg, float cb, float ca, float s1, float t1, float s2, float t2, float fs1, float ft1, float fs2, float ft2);
\ No newline at end of file
+
+// allocates space in geometry buffers, and fills in pointers to the buffers in passsed struct
+// (it is up to the caller to fill in the geometry data)
+// (make sure you scale your colors by the colorscale field)
+// (only valid between R_Mesh_Start and R_Mesh_Finish)
+int R_Mesh_Draw_GetBuffer(rmeshbufferinfo_t *m, int wantoverbright);
+
+// saves a section of the rendered frame to a .tga file
+qboolean SCR_ScreenShot(char *filename, int x, int y, int width, int height);
+// used by R_Envmap_f and internally in backend, clears the frame
+void R_ClearScreen(void);
+// invoke refresh of frame
+void SCR_UpdateScreen (void);
+
+#endif
+