split render.c into cave_mesher.c and cave_render.c

tests/caveview/caveview.h

@@ -0,0 +1,48 @@
+#ifndef INCLUDE_CAVEVIEW_H
+#define INCLUDE_CAVEVIEW_H
+
+#include "stb.h"
+
+#define STBVOX_ROTATION_IN_LIGHTING
+#include "stb_voxel_render.h"
+
+typedef struct
+{
+   int cx,cy;
+
+   stbvox_mesh_maker mm;
+
+   uint8 *build_buffer;
+   uint8 *face_buffer;
+
+   int num_quads;
+   float transform[3][3];
+   float bounds[2][3];
+
+   uint8 sv_blocktype[34][34][18];
+   uint8 sv_lighting [34][34][18];
+} raw_mesh;
+
+// a 3D checkerboard of empty,solid would be: 32x32x255x6/2 ~= 800000
+// an all-leaf qchunk would be: 32 x 32 x 255 x 6 ~= 1,600,000
+
+#define BUILD_QUAD_MAX     800000 
+#define BUILD_BUFFER_SIZE  (4*4*BUILD_QUAD_MAX) // 4 bytes per vertex, 4 vertices per quad
+#define FACE_BUFFER_SIZE   (  4*BUILD_QUAD_MAX) // 4 bytes per quad
+
+
+extern void mesh_init(void);
+extern void render_init(void);
+extern void world_init(void);
+extern void ods(char *fmt, ...); // output debug string
+extern void reset_cache_size(int size);
+
+
+#include "cave_parse.h"  // fast_chunk
+
+extern fast_chunk *get_converted_fastchunk(int chunk_x, int chunk_y);
+extern void build_chunk(int chunk_x, int chunk_y, fast_chunk *fc_table[4][4], raw_mesh *rm);
+extern void reset_cache_size(int size);
+extern void deref_fastchunk(fast_chunk *fc);
+
+#endif