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UV and ST

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This commit is contained in:
John Alanbrook
2022-12-30 19:31:06 +00:00
parent daebe5c665
commit eadf3524ba
6 changed files with 62 additions and 61 deletions
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42
source/engine/texture.c
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@@ -80,8 +80,6 @@ struct Texture *texture_loadfromfile(const char *path)
return new;
}
void tex_pull(struct Texture *tex)
{
if (tex->data != NULL)
@@ -184,35 +182,19 @@ void tex_gpu_free(struct Texture *tex)
void tex_anim_calc_uv(struct TexAnimation *anim)
{
struct Rect uv;
uv.w = 1.f / anim->tex->anim.frames;
uv.h = 1.f;
uv.y = 0.f;
uv.x = uv.w * (anim->frame);
struct glrect st;
float w = 1.f / anim->tex->anim.frames;
st.s0 = w * (anim->frame);
st.s1 = st.s0 + w;
st.t0 = 0.f;
st.t1 = 1.f;
anim->uv = uv;
anim->st = st;
}
struct glrect tex_get_rect(struct Texture *tex)
{
if (tex->opts.animation) {
/*
tex_anim_calc_uv(tex->anim);
struct glrect ret;
ret.s0 = tex->anim.uv.x;
ret.s1 = tex->anim.uv.x + tex->anim.uv.w;
ret.t0 = tex->anim.uv.y;
ret.t1 = tex->anim.uv.y + tex->anim.uv.h;
*/
return runit;
} else {
return runit;
}
return runit;
return ST_UNIT;
}
void tex_bind(struct Texture *tex)
@@ -271,4 +253,12 @@ void anim_bkwd(struct TexAnimation *anim)
anim_decr(anim);
}
float st_s_w(struct glrect st)
{
return (st.s1 - st.s0);
}
float st_s_h(struct glrect st)
{
return (st.t1 - st.t0);
}