bmodel shadow volumes

[xonotic/darkplaces.git] / gl_backend.h

diff --git a/gl_backend.h b/gl_backend.h
index 0082501c2c8989848fdc01c95253628128983a03..6a652013a17ba65ec2061767eb7cd137c3d19f74 100644 (file)
--- a/gl_backend.h
+++ b/gl_backend.h
@@ -1,51 +1,46 @@
 
+#ifndef GL_BACKEND_H
+#define GL_BACKEND_H
+
 #define MAX_TEXTUREUNITS 8
 
-extern int c_meshtris, c_meshs, c_transtris, c_transmeshs;
+#define POLYGONELEMENTS_MAXPOINTS 258
+extern int polygonelements[768];
 
-typedef struct
-{
-       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 *index;
-       int numverts;
-       float *vertex;
-       int vertexstep;
-       float *color;
-       int colorstep;
-       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
-}
-rmeshinfo_t;
+void GL_DrawRangeElements(int firstvert, int endvert, int indexcount, int *index);
+
+void GL_SetupView_ViewPort (int x, int y, int width, int height);
+void GL_SetupView_Orientation_Identity (void);
+void GL_SetupView_Orientation_FromEntity (vec3_t origin, vec3_t angles);
+void GL_SetupView_Mode_Perspective (double aspect, double fovx, double fovy, double zNear, double zFar);
+void GL_SetupView_Mode_Ortho (double x1, double y1, double x2, double y2, double zNear, double zFar);
+void GL_UseColorArray(void);
+void GL_Color(float cr, float cg, float cb, float ca);
+
+extern cvar_t gl_lockarrays;
+
+extern int c_meshelements, c_meshs;
 
+//input to R_Mesh_State
 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 wantoverbright;
        int tex[MAX_TEXTUREUNITS];
-       float texrgbscale[MAX_TEXTUREUNITS]; // used only if COMBINE is present
-
-       // output
-       int *index;
-       float *vertex;
-       float *color;
-       float colorscale;
-       float *texcoords[MAX_TEXTUREUNITS];
+       int texrgbscale[MAX_TEXTUREUNITS]; // used only if COMBINE is present
 }
-rmeshbufferinfo_t;
+rmeshstate_t;
+
+// overbright rendering scale for the current state
+extern int r_lightmapscalebit;
+extern float r_colorscale;
+extern float *varray_vertex;
+extern float *varray_color;
+extern float *varray_texcoord[MAX_TEXTUREUNITS];
+extern int mesh_maxverts;
 
 // adds console variables and registers the render module (only call from GL_Init)
 void gl_backend_init(void);
@@ -57,34 +52,24 @@ void R_Mesh_Start(void);
 // (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);
+// sets up the requested transform matrix
+void R_Mesh_Matrix(const matrix4x4_t *matrix);
 
-// queues a mesh to be rendered (invokes Render if queue is full)
-// (only valid between R_Mesh_Start and R_Mesh_Finish)
-void R_Mesh_Draw(const rmeshinfo_t *m);
+// sets up the requested state
+void R_Mesh_State(const rmeshstate_t *m);
 
-// renders the queued transparent meshs
-// (only valid between R_Mesh_Start and R_Mesh_Finish)
-void R_Mesh_AddTransparent(void);
+// sets up the requested main state
+void R_Mesh_MainState(const rmeshstate_t *m);
 
-// ease-of-use frontend to R_Mesh_Draw, set up meshinfo, except for index and numtriangles and numverts, then call this
-// (only valid between R_Mesh_Start and R_Mesh_Finish)
-void R_Mesh_DrawPolygon(rmeshinfo_t *m, int numverts);
+// sets up the requested texture state
+void R_Mesh_TextureState(const rmeshstate_t *m);
 
-// 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)
-// (only valid between R_Mesh_Start and R_Mesh_Finish)
-void R_Mesh_Draw_NativeOnly(const rmeshinfo_t *m);
+// enlarges vertex arrays if they are too small
+#define R_Mesh_ResizeCheck(numverts) if ((numverts) > mesh_maxverts) _R_Mesh_ResizeCheck(numverts);
+void _R_Mesh_ResizeCheck(int numverts);
 
-// allocates space in geometry buffers, and fills in pointers to the buffers in passsed struct
-// (this is used for very high speed rendering, no copying)
-// (only valid between R_Mesh_Start and R_Mesh_Finish)
-int R_Mesh_Draw_GetBuffer(rmeshbufferinfo_t *m);
+// renders the mesh in the varray_* buffers
+void R_Mesh_Draw(int numverts, int numtriangles, int *elements);
 
 // saves a section of the rendered frame to a .tga file
 qboolean SCR_ScreenShot(char *filename, int x, int y, int width, int height);
@@ -92,3 +77,6 @@ qboolean SCR_ScreenShot(char *filename, int x, int y, int width, int height);
 void R_ClearScreen(void);
 // invoke refresh of frame
 void SCR_UpdateScreen (void);
+
+#endif
+