48 lines
1.1 KiB
C
48 lines
1.1 KiB
C
#ifndef CLIP_H
|
|
#define CLIP_H
|
|
|
|
#include <stdint.h>
|
|
|
|
#include "../containers/aligned_vector.h"
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
typedef enum {
|
|
CLIP_RESULT_ALL_IN_FRONT,
|
|
CLIP_RESULT_ALL_BEHIND,
|
|
CLIP_RESULT_ALL_ON_PLANE,
|
|
CLIP_RESULT_FRONT_TO_BACK,
|
|
CLIP_RESULT_BACK_TO_FRONT
|
|
} ClipResult;
|
|
|
|
|
|
/* Note: This structure is the almost the same format as pvr_vertex_t aside from the offet
|
|
* (oargb) which is replaced by the floating point w value. This is so that we can
|
|
* simply zero it and memcpy the lot into the output. This struct is 96 bytes to keep
|
|
* 32 byte alignment */
|
|
typedef struct {
|
|
uint32_t flags;
|
|
float xyz[3];
|
|
float uv[2];
|
|
uint32_t argb;
|
|
|
|
float nxyz[3]; /* Normal */
|
|
float w;
|
|
float xyzES[3]; /* Coordinate in eye space */
|
|
float nES[3]; /* Normal in eye space */
|
|
|
|
float diffuse[4]; /* Colour in floating point */
|
|
float st[2]; /* 8-bytes makes this 96 bytes in total */
|
|
} ClipVertex;
|
|
|
|
void clipLineToNearZ(const ClipVertex* v1, const ClipVertex* v2, ClipVertex* vout, float* t);
|
|
void clipTriangleStrip(AlignedVector* vertices, AlignedVector* outBuffer);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif // CLIP_H
|