renderer.h

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#ifndef RENDERER_H
#define RENDERER_H
 
#include <SDL2/SDL.h>
#include "../voxtrees/tree.h"
#include "camera.h"
#include "lights.h"
 
#ifdef VOXRND_SOURCE
typedef Uint32 square[16] __attribute__((aligned(16)));
 
#define VOX_TEXTURE_SIZE (32*32*32) /* VOX_TEXTURE_SIDE ^ 3 */
#define VOX_TEXTURE_SIDE 32 /* Power of 2 */
 
enum vox_context_type
{
    VOX_CTX_WO_WINDOW,
    VOX_CTX_W_WINDOW
};
 
struct vox_rnd_ctx
{
    SDL_Window *window;
    SDL_Surface *surface;
    struct vox_node *scene;
    struct vox_camera *camera;
 
    struct vox_light_manager *light_manager;
    Uint8 *texture;
    square *square_output;
    unsigned int squares_num, ws;
 
    unsigned int hs, quality;
};
#else
 
struct vox_rnd_ctx
{
    SDL_Window *window;
    SDL_Surface *surface;
    struct vox_node *scene;
    struct vox_camera *camera;
    struct vox_light_manager *light_manager;
};
#endif
 
#define VOX_QUALITY_BEST 0b00
 
#define VOX_QUALITY_FAST 0b01
 
#define VOX_QUALITY_ADAPTIVE 0b10
 
#define VOX_QUALITY_RAY_MERGE 0b0100
 
#define VOX_QUALITY_RAY_MERGE_ACCURATE 0b1000
 
#define VOX_QUALITY_RM_MASK 0b1100 /* RM stands for Ray Merge */
 
#define VOX_QUALITY_MODE_MASK 0b11
 
#ifdef VOXRND_SOURCE
#define VOX_QUALITY_RM_MAX 0b1000
#define VOX_QUALITY_MODE_MAX 0b10
#endif
 
VOX_EXPORT struct vox_rnd_ctx* vox_make_context_from_surface (SDL_Surface *surface);
 
VOX_EXPORT struct vox_rnd_ctx* vox_make_context_and_window (unsigned int width, unsigned int height);
 
VOX_EXPORT void vox_redraw (struct vox_rnd_ctx *ctx);
 
VOX_EXPORT void vox_context_set_scene (struct vox_rnd_ctx *ctx, struct vox_node *scene);
 
VOX_EXPORT void vox_context_set_camera (struct vox_rnd_ctx *ctx, struct vox_camera *camera);
 
VOX_EXPORT void vox_context_set_light_manager (struct vox_rnd_ctx *ctx,
                                               struct vox_light_manager *light_manager);
 
VOX_EXPORT int vox_context_set_quality (struct vox_rnd_ctx *ctx, unsigned int quality);
 
VOX_EXPORT void vox_destroy_context (struct vox_rnd_ctx *ctx);
 
VOX_EXPORT void vox_render (struct vox_rnd_ctx *ctx);
 
#endif