GLdc/GL/clip.h
Luke Benstead da97483eee Switch to using 4-byte colours internally rather than floats
These are stored in BGRA format so they can be directly cast to a uint32_t to get the
correct format for the argb param in pvr_vertex_t (yay endianess)

This results in a performance improvement as it reduces the data requirements.
2018-08-20 09:28:30 +01:00

46 lines
768 B
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;
#define A8IDX 3
#define R8IDX 2
#define G8IDX 1
#define B8IDX 0
typedef struct {
uint32_t flags;
float xyz[3];
float uv[2];
uint8_t bgra[4];
float nxyz[3]; /* Normal */
float w;
float st[2];
} 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