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Cleanups and optimisations

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This commit is contained in:
Luke Benstead 2018-08-01 17:57:31 +01:00
parent 39ac10af00
commit 4716a6a0c0
1 changed files with 14 additions and 11 deletions
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25
GL/clip.c
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@ -33,34 +33,37 @@ void clipLineToNearZ(const ClipVertex* v1, const ClipVertex* v2, ClipVertex* vou
vout->xyz[2] = v1->xyz[2] + (vec[2] * (*t)); vout->xyz[2] = v1->xyz[2] + (vec[2] * (*t));
} }
static void interpolateFloat(const float v1, const float v2, const float t, float* out) { static inline void interpolateFloat(const float v1, const float v2, const float t, float* out) {
*out = v1 + (v2 - v1) * t; float v = v2 - v1;
*out = (v * t) + v1;
} }
static void interpolateVec2(const float* v1, const float* v2, const float t, float* out) { static void interpolateVec2(const float* v1, const float* v2, const float t, float* out) {
/* FIXME: SH4 has an asm instruction for this */ /* FIXME: SH4 has an asm instruction for this */
out[0] = v1[0] + (v2[0] - v1[0]) * t; interpolateFloat(v1[0], v2[0], t, &out[0]);
out[1] = v1[1] + (v2[1] - v1[1]) * t; interpolateFloat(v1[1], v2[1], t, &out[1]);
} }
static void interpolateVec3(const float* v1, const float* v2, const float t, float* out) { static void interpolateVec3(const float* v1, const float* v2, const float t, float* out) {
/* FIXME: SH4 has an asm instruction for this */ /* FIXME: SH4 has an asm instruction for this */
out[0] = v1[0] + (v2[0] - v1[0]) * t;
out[1] = v1[1] + (v2[1] - v1[1]) * t; interpolateFloat(v1[0], v2[0], t, &out[0]);
out[2] = v1[2] + (v2[2] - v1[2]) * t; interpolateFloat(v1[1], v2[1], t, &out[1]);
interpolateFloat(v1[2], v2[2], t, &out[2]);
} }
static void interpolateVec4(const float* v1, const float* v2, const float t, float* out) { static void interpolateVec4(const float* v1, const float* v2, const float t, float* out) {
/* FIXME: SH4 has an asm instruction for this */ /* FIXME: SH4 has an asm instruction for this */
out[0] = v1[0] + (v2[0] - v1[0]) * t; interpolateFloat(v1[0], v2[0], t, &out[0]);
out[1] = v1[1] + (v2[1] - v1[1]) * t; interpolateFloat(v1[1], v2[1], t, &out[1]);
out[2] = v1[2] + (v2[2] - v1[2]) * t; interpolateFloat(v1[2], v2[2], t, &out[2]);
out[3] = v1[3] + (v2[3] - v1[3]) * t; interpolateFloat(v1[3], v2[3], t, &out[3]);
} }
const uint32_t VERTEX_CMD_EOL = 0xf0000000; const uint32_t VERTEX_CMD_EOL = 0xf0000000;
const uint32_t VERTEX_CMD = 0xe0000000; const uint32_t VERTEX_CMD = 0xe0000000;
void clipTriangleStrip(AlignedVector* vertices, AlignedVector* outBuffer) __attribute__((optimize("fast-math")));
void clipTriangleStrip(AlignedVector* vertices, AlignedVector* outBuffer) { void clipTriangleStrip(AlignedVector* vertices, AlignedVector* outBuffer) {
/* Clipping triangle strips is *hard* this is the algorithm we follow: /* Clipping triangle strips is *hard* this is the algorithm we follow: