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twn_rendering: m_sprite texture_origin changed for texture_region, stretched subregion work now

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This commit is contained in:
veclav talica
2024-09-21 20:07:05 +03:00
parent ddf0ef6a0c
commit 5caf736370
4 changed files with 24 additions and 17 deletions
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2
src/rendering/twn_rendering_c.h
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@ -40,7 +40,7 @@ struct sprite_primitive {
bool repeat;
m_option_list(
t_fvec2, texture_origin )
t_frect, texture_region )
};
struct rect_primitive {

29
src/rendering/twn_sprites.c
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@ -26,7 +26,7 @@ void push_sprite(const t_push_sprite_args args) {
.flip_x = m_or(args, flip_x, false),
.flip_y = m_or(args, flip_y, false),
.repeat = !m_or(args, stretch, true),
m_opt_from(texture_origin, args, texture_origin)
m_opt_from(texture_region, args, texture_region)
};
struct primitive_2d primitive = {
@ -127,13 +127,22 @@ void render_sprites(const struct primitive_2d primitives[],
const float xr = srcrect.x / dims.w;
const float yr = srcrect.y / dims.h;
uv0 = (t_fvec2){ xr + wr * sprite.flip_x, yr + hr * sprite.flip_y };
uv1 = (t_fvec2){ xr + wr * sprite.flip_x, yr + hr * !sprite.flip_y };
uv2 = (t_fvec2){ xr + wr * !sprite.flip_x, yr + hr * !sprite.flip_y };
uv3 = (t_fvec2){ xr + wr * !sprite.flip_x, yr + hr * sprite.flip_y };
/* TODO: texture_origin support */
if (!m_is_set(sprite, texture_region)) {
uv0 = (t_fvec2){ xr + wr * sprite.flip_x, yr + hr * sprite.flip_y };
uv1 = (t_fvec2){ xr + wr * sprite.flip_x, yr + hr * !sprite.flip_y };
uv2 = (t_fvec2){ xr + wr * !sprite.flip_x, yr + hr * !sprite.flip_y };
uv3 = (t_fvec2){ xr + wr * !sprite.flip_x, yr + hr * sprite.flip_y };
} else {
const float offx = (sprite.texture_region_opt.x / srcrect.w) * (srcrect.w / dims.w);
const float offy = (sprite.texture_region_opt.y / srcrect.h) * (srcrect.h / dims.h);
const float offw = (1.0f - (sprite.texture_region_opt.w / srcrect.w)) * (srcrect.w / dims.w);
const float offh = (1.0f - (sprite.texture_region_opt.h / srcrect.h)) * (srcrect.h / dims.h);
uv0 = (t_fvec2){ xr + offx + wr * sprite.flip_x, yr + offy + hr * sprite.flip_y };
uv1 = (t_fvec2){ xr + offx + wr * sprite.flip_x, yr - offh + hr * !sprite.flip_y };
uv2 = (t_fvec2){ xr - offw + wr * !sprite.flip_x, yr - offh + hr * !sprite.flip_y };
uv3 = (t_fvec2){ xr - offw + wr * !sprite.flip_x, yr + offy + hr * sprite.flip_y };
}
} else {
/* try fitting texture into supplied destination rectangle */
@ -145,11 +154,11 @@ void render_sprites(const struct primitive_2d primitives[],
uv2 = (t_fvec2){ rx * !sprite.flip_x, ry * !sprite.flip_y };
uv3 = (t_fvec2){ rx * !sprite.flip_x, ry * sprite.flip_y };
if (m_is_set(sprite, texture_origin)) {
if (m_is_set(sprite, texture_region)) {
/* displace origin */
const float ax = sprite.texture_origin_opt.x / srcrect.w;
const float ay = sprite.texture_origin_opt.y / srcrect.h;
const float ax = sprite.texture_region_opt.x / srcrect.w;
const float ay = sprite.texture_region_opt.y / srcrect.h;
uv0.x += ax; uv1.x += ax; uv2.x += ax; uv3.x += ax;
uv0.y += ay; uv1.y += ay; uv2.y += ay; uv3.y += ay;