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#include "config.h"
#include "gskvulkanclipprivate.h"
#include "gskroundedrectprivate.h"
#include "gsktransform.h"
void
gsk_vulkan_clip_init_empty (GskVulkanClip *clip,
const graphene_rect_t *rect)
{
clip->type = GSK_VULKAN_CLIP_NONE;
gsk_rounded_rect_init_from_rect (&clip->rect, rect, 0);
}
static void
gsk_vulkan_clip_init_copy (GskVulkanClip *self,
const GskVulkanClip *src)
{
self->type = src->type;
gsk_rounded_rect_init_copy (&self->rect, &src->rect);
}
gboolean
gsk_vulkan_clip_intersect_rect (GskVulkanClip *dest,
const GskVulkanClip *src,
const graphene_rect_t *rect)
{
if (graphene_rect_contains_rect (rect, &src->rect.bounds))
{
gsk_vulkan_clip_init_copy (dest, src);
return TRUE;
}
if (!graphene_rect_intersection (rect, &src->rect.bounds, NULL))
{
dest->type = GSK_VULKAN_CLIP_ALL_CLIPPED;
return TRUE;
}
switch (src->type)
{
case GSK_VULKAN_CLIP_ALL_CLIPPED:
dest->type = GSK_VULKAN_CLIP_ALL_CLIPPED;
break;
case GSK_VULKAN_CLIP_NONE:
gsk_vulkan_clip_init_copy (dest, src);
if (graphene_rect_intersection (&dest->rect.bounds, rect, &dest->rect.bounds))
dest->type = GSK_VULKAN_CLIP_RECT;
else
dest->type = GSK_VULKAN_CLIP_ALL_CLIPPED;
break;
case GSK_VULKAN_CLIP_RECT:
gsk_vulkan_clip_init_copy (dest, src);
if (!graphene_rect_intersection (&dest->rect.bounds, rect, &dest->rect.bounds))
dest->type = GSK_VULKAN_CLIP_ALL_CLIPPED;
break;
case GSK_VULKAN_CLIP_ROUNDED_CIRCULAR:
case GSK_VULKAN_CLIP_ROUNDED:
if (gsk_rounded_rect_contains_rect (&src->rect, rect))
{
dest->type = GSK_VULKAN_CLIP_RECT;
gsk_rounded_rect_init_from_rect (&dest->rect, rect, 0);
}
else
{
/* some points of rect are inside src's rounded rect,
* some are outside. */
/* XXX: If the 2 rects don't intersect on rounded corners,
* we could actually compute a new clip here.
*/
return FALSE;
}
break;
default:
g_assert_not_reached ();
return FALSE;
}
return TRUE;
}
gboolean
gsk_vulkan_clip_intersect_rounded_rect (GskVulkanClip *dest,
const GskVulkanClip *src,
const GskRoundedRect *rounded)
{
if (gsk_rounded_rect_contains_rect (rounded, &src->rect.bounds))
{
gsk_vulkan_clip_init_copy (dest, src);
return TRUE;
}
if (!graphene_rect_intersection (&rounded->bounds, &src->rect.bounds, NULL))
{
dest->type = GSK_VULKAN_CLIP_ALL_CLIPPED;
return TRUE;
}
switch (src->type)
{
case GSK_VULKAN_CLIP_ALL_CLIPPED:
dest->type = GSK_VULKAN_CLIP_ALL_CLIPPED;
break;
case GSK_VULKAN_CLIP_NONE:
dest->type = gsk_rounded_rect_is_circular (rounded) ? GSK_VULKAN_CLIP_ROUNDED_CIRCULAR : GSK_VULKAN_CLIP_ROUNDED;
gsk_rounded_rect_init_copy (&dest->rect, rounded);
break;
case GSK_VULKAN_CLIP_RECT:
if (graphene_rect_contains_rect (&src->rect.bounds, &rounded->bounds))
{
dest->type = gsk_rounded_rect_is_circular (rounded) ? GSK_VULKAN_CLIP_ROUNDED_CIRCULAR : GSK_VULKAN_CLIP_ROUNDED;
gsk_rounded_rect_init_copy (&dest->rect, rounded);
return TRUE;
}
/* some points of rect are inside src's rounded rect,
* some are outside. */
/* XXX: If the 2 rects don't intersect on rounded corners,
* we could actually compute a new clip here.
*/
return FALSE;
case GSK_VULKAN_CLIP_ROUNDED_CIRCULAR:
case GSK_VULKAN_CLIP_ROUNDED:
if (gsk_rounded_rect_contains_rect (&src->rect, &rounded->bounds))
{
dest->type = gsk_rounded_rect_is_circular (rounded) ? GSK_VULKAN_CLIP_ROUNDED_CIRCULAR : GSK_VULKAN_CLIP_ROUNDED;
gsk_rounded_rect_init_copy (&dest->rect, rounded);
return TRUE;
}
/* XXX: Can be improved for the case where one of the rects is a slightly shrunk version of the other */
return FALSE;
default:
g_assert_not_reached ();
return FALSE;
}
return TRUE;
}
gboolean
gsk_vulkan_clip_transform (GskVulkanClip *dest,
const GskVulkanClip *src,
GskTransform *transform,
const graphene_rect_t *viewport)
{
switch (src->type)
{
default:
g_assert_not_reached();
return FALSE;
case GSK_VULKAN_CLIP_ALL_CLIPPED:
gsk_vulkan_clip_init_copy (dest, src);
return TRUE;
case GSK_VULKAN_CLIP_NONE:
gsk_vulkan_clip_init_empty (dest, viewport);
return TRUE;
case GSK_VULKAN_CLIP_RECT:
case GSK_VULKAN_CLIP_ROUNDED_CIRCULAR:
case GSK_VULKAN_CLIP_ROUNDED:
switch (gsk_transform_get_category (transform))
{
case GSK_TRANSFORM_CATEGORY_IDENTITY:
gsk_vulkan_clip_init_copy (dest, src);
return TRUE;
case GSK_TRANSFORM_CATEGORY_2D_TRANSLATE:
{
float dx, dy;
gsk_transform_to_translate (transform, &dx, &dy);
gsk_vulkan_clip_init_copy (dest, src);
dest->rect.bounds.origin.x -= dx;
dest->rect.bounds.origin.y -= dy;
}
return TRUE;
case GSK_TRANSFORM_CATEGORY_2D_AFFINE:
{
float dx, dy, scale_x, scale_y;
gsk_transform_to_affine (transform, &scale_x, &scale_y, &dx, &dy);
scale_x = 1. / scale_x;
scale_y = 1. / scale_y;
gsk_vulkan_clip_init_copy (dest, src);
dest->rect.bounds.origin.x = (dest->rect.bounds.origin.x - dx) * scale_x;
dest->rect.bounds.origin.y = (dest->rect.bounds.origin.y - dy) * scale_y;
dest->rect.bounds.size.width *= scale_x;
dest->rect.bounds.size.height *= scale_y;
if (src->type != GSK_VULKAN_CLIP_RECT)
{
dest->rect.corner[0].width *= scale_x;
dest->rect.corner[0].height *= scale_y;
dest->rect.corner[1].width *= scale_x;
dest->rect.corner[1].height *= scale_y;
dest->rect.corner[2].width *= scale_x;
dest->rect.corner[2].height *= scale_y;
dest->rect.corner[3].width *= scale_x;
dest->rect.corner[3].height *= scale_y;
}
}
return TRUE;
case GSK_TRANSFORM_CATEGORY_UNKNOWN:
case GSK_TRANSFORM_CATEGORY_ANY:
case GSK_TRANSFORM_CATEGORY_3D:
case GSK_TRANSFORM_CATEGORY_2D:
default:
return FALSE;
}
}
}
gboolean
gsk_vulkan_clip_contains_rect (const GskVulkanClip *self,
const graphene_rect_t *rect)
{
switch (self->type)
{
default:
g_assert_not_reached();
case GSK_VULKAN_CLIP_ALL_CLIPPED:
return FALSE;
case GSK_VULKAN_CLIP_NONE:
return TRUE;
case GSK_VULKAN_CLIP_RECT:
return graphene_rect_contains_rect (&self->rect.bounds, rect);
case GSK_VULKAN_CLIP_ROUNDED_CIRCULAR:
case GSK_VULKAN_CLIP_ROUNDED:
return gsk_rounded_rect_contains_rect (&self->rect, rect);
}
}
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