transform matrix is now separate from R_Mesh_State, a new function called R_Mesh_Matr...

[xonotic/darkplaces.git] / gl_backend.h

diff --git a/gl_backend.h b/gl_backend.h
index 2eaae8e8aba04bdecc34b969f4f44560fd936452..1752635f6303a408d653855bc48a18efeed1d171 100644 (file)
--- a/gl_backend.h
+++ b/gl_backend.h
@@ -1,42 +1,66 @@
 
-#define MAX_TEXTUREUNITS 4
+#ifndef GL_BACKEND_H
+#define GL_BACKEND_H
 
-extern int c_meshtris, c_meshs, c_transtris, c_transmeshs;
+#define MAX_TEXTUREUNITS 8
+
+extern int c_meshtris, c_meshs;
 
 typedef struct
 {
-       int transparent;
+       //input to R_Mesh_Draw_GetBuffer
        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 *index;
-       int numverts;
-       float *vertex;
-       int vertexstep;
-       float *color;
-       int colorstep;
-       // if color is NULL, these are used for all vertices
-       float cr, cg, cb, ca;
+       int wantoverbright;
        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;
+rmeshstate_t;
+
+// overbright rendering scale for the current state
+extern float mesh_colorscale;
+extern int *varray_element;
+extern float *varray_vertex;
+extern float *varray_color;
+extern float *varray_texcoord[MAX_TEXTUREUNITS];
+extern int mesh_maxverts;
+extern int mesh_maxtris;
 
 // 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
-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
-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);
-// same as normal, except for harsh format restrictions (vertex must be 4 float, color must be 4 float, texcoord must be 2 float, flat color not supported)
-void R_Mesh_Draw_NativeOnly(const rmeshinfo_t *m);
+
+// 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);
+
+// sets up the requested transform matrix
+void R_Mesh_Matrix(const matrix4x4_t *matrix);
+
+// sets up the requested state
+void R_Mesh_State(const rmeshstate_t *m);
+
+// enlarges geometry buffers if they are too small
+#define R_Mesh_ResizeCheck(numverts, numtriangles) if ((numverts) > mesh_maxverts || (numtriangles) > mesh_maxtris) _R_Mesh_ResizeCheck(numverts, numtriangles);
+void _R_Mesh_ResizeCheck(int numverts, int numtriangles);
+
+// renders the mesh in the varray_* buffers
+void R_Mesh_Draw(int numverts, int numtriangles);
+
+// 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
+