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Remove redundant function

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This commit is contained in:
Miloslav Číž 2019-05-08 14:20:25 +02:00
parent eaea810b85
commit 151fa7c283
2 changed files with 11 additions and 32 deletions
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26
s3l.h
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@ -1068,32 +1068,6 @@ static inline void S3L_mapCameraToScreen(S3L_Vec4 point, S3L_Camera *camera,
// ^ S3L_FRACTIONS_PER_UNIT cancel out
}
/*
Helper function to interpolate texture coordinates based on barycentric
coordinates. If you're going for max performance, you may want to compute
these values yourself -- some specific cases may be possible to compute
faster.
*/
void S3L_interpolateTexCoords(
S3L_Unit u0,
S3L_Unit v0,
S3L_Unit u1,
S3L_Unit v1,
S3L_Unit u2,
S3L_Unit v2,
S3L_PixelInfo *p,
S3L_Unit *u,
S3L_Unit *v
)
{
*u = (p->barycentric0 * u0 + p->barycentric1 * u1 + p->barycentric2 * u2) /
S3L_FRACTIONS_PER_UNIT;
*v = (p->barycentric0 * v0 + p->barycentric1 * v1 + p->barycentric2 * v2) /
S3L_FRACTIONS_PER_UNIT;
}
void S3L_drawModelIndexed(
const S3L_Unit coords[],
const S3L_Index triangleVertexIndices[],

17
testSDL.c
View file

@ -90,12 +90,17 @@ void drawPixel(S3L_PixelInfo *p)
coords = tex_coords + p->triangleID * 6;
S3L_interpolateTexCoords(
coords[0] * 16,coords[1] * 16,
coords[2] * 16,coords[3] * 16,
coords[4] * 16,coords[5] * 16,
p,
&u,&v);
u = S3L_interpolateBarycentric(
coords[0] * 16,
coords[2] * 16,
coords[4] * 16,
p->barycentric0, p->barycentric1, p->barycentric2);
v = S3L_interpolateBarycentric(
coords[1] * 16,
coords[3] * 16,
coords[5] * 16,
p->barycentric0, p->barycentric1, p->barycentric2);
uint8_t col = texturePixel(u,v);