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gl-renderer: Remove clip_simple() from clipper

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clip_simple() isn't used anymore outside of the clipper. This commit
removes it to simplify the clipper API. Its implementation is moved
straight to the axis-aligned quad clipping path of clip_transformed().

Signed-off-by: Loïc Molinari <loic.molinari@collabora.com>
This commit is contained in:
Loïc Molinari 2023-05-25 09:27:08 +02:00 committed by Pekka Paalanen
parent 903b6b9336
commit aac11c8884
2 changed files with 7 additions and 20 deletions
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22
libweston/vertex-clipping.c
View file

@ -279,19 +279,6 @@ clip_polygon_bottom(struct clip_context *ctx, const struct polygon8 *src,
return ctx->vertices - dst;
}
WESTON_EXPORT_FOR_TESTS int
clip_simple(struct clip_context *ctx,
struct polygon8 *surf,
struct clip_vertex *restrict vertices)
{
int i;
for (i = 0; i < surf->n; i++) {
vertices[i].x = CLIP(surf->pos[i].x, ctx->clip.x1, ctx->clip.x2);
vertices[i].y = CLIP(surf->pos[i].y, ctx->clip.y1, ctx->clip.y2);
}
return surf->n;
}
WESTON_EXPORT_FOR_TESTS int
clip_transformed(struct clip_context *ctx,
const struct polygon8 *surf,
@ -332,14 +319,19 @@ clip_quad(struct gl_quad *quad, pixman_box32_t *surf_rect,
.clip.x2 = surf_rect->x2,
.clip.y2 = surf_rect->y2,
};
int n;
int i, n;
/* Simple case: quad edges are parallel to surface rect edges, there
* will be either four or zero edges. We just need to clip the quad to
* the surface rect bounds and test for non-zero area:
*/
if (quad->axis_aligned) {
clip_simple(&ctx, &quad->vertices, vertices);
for (i = 0; i < 4; i++) {
vertices[i].x = CLIP(quad->vertices.pos[i].x,
ctx.clip.x1, ctx.clip.x2);
vertices[i].y = CLIP(quad->vertices.pos[i].y,
ctx.clip.y1, ctx.clip.y2);
}
if ((vertices[0].x != vertices[1].x) &&
(vertices[0].y != vertices[2].y))
return 4;

5
libweston/vertex-clipping.h
View file

@ -57,11 +57,6 @@ struct clip_context {
float
float_difference(float a, float b);
int
clip_simple(struct clip_context *ctx,
struct polygon8 *surf,
struct clip_vertex *restrict vertices);
int
clip_transformed(struct clip_context *ctx,
const struct polygon8 *surf,