void
_cairo_gl_composite_set_source_operand (cairo_gl_composite_t *setup,
const cairo_gl_operand_t *source)
{
_cairo_gl_operand_destroy (&setup->src);
_cairo_gl_operand_copy (&setup->src, source);
}
void
_cairo_gl_composite_set_mask_operand (cairo_gl_composite_t *setup,
const cairo_gl_operand_t *mask)
{
_cairo_gl_operand_destroy (&setup->mask);
if (mask)
_cairo_gl_operand_copy (&setup->mask, mask);
}
static cairo_status_t
_cairo_gl_subsurface_operand_init (cairo_gl_operand_t *operand,
const cairo_pattern_t *_src,
cairo_gl_surface_t *dst,
const cairo_rectangle_int_t *sample,
const cairo_rectangle_int_t *extents,
cairo_bool_t use_texgen)
{
const cairo_surface_pattern_t *src = (cairo_surface_pattern_t *)_src;
cairo_surface_subsurface_t *sub;
cairo_gl_surface_t *surface;
cairo_surface_attributes_t *attributes;
cairo_int_status_t status;
sub = (cairo_surface_subsurface_t *) src->surface;
if (sample->x < 0 || sample->y < 0 ||
sample->x + sample->width > sub->extents.width ||
sample->y + sample->height > sub->extents.height)
{
return _cairo_gl_subsurface_clone_operand_init (operand, _src,
dst, sample, extents,
use_texgen);
}
surface = (cairo_gl_surface_t *) sub->target;
if (surface->base.device && surface->base.device != dst->base.device)
return CAIRO_INT_STATUS_UNSUPPORTED;
if (! _cairo_gl_surface_is_texture (surface))
return CAIRO_INT_STATUS_UNSUPPORTED;
status = _cairo_gl_surface_resolve_multisampling (surface);
if (unlikely (status))
return status;
/* Translate the matrix from
* (unnormalized src -> unnormalized src) to
* (unnormalized dst -> unnormalized src)
*/
_cairo_gl_operand_copy(operand, &surface->operand);
attributes = &operand->texture.attributes;
attributes->matrix = src->base.matrix;
attributes->matrix.x0 += sub->extents.x;
attributes->matrix.y0 += sub->extents.y;
cairo_matrix_multiply (&attributes->matrix,
&attributes->matrix,
&surface->operand.texture.attributes.matrix);
attributes->extend = src->base.extend;
attributes->filter = src->base.filter;
attributes->has_component_alpha = src->base.has_component_alpha;
operand->texture.texgen = use_texgen;
return CAIRO_STATUS_SUCCESS;
}
static cairo_status_t
_cairo_gl_surface_operand_init (cairo_gl_operand_t *operand,
const cairo_pattern_t *_src,
cairo_gl_surface_t *dst,
const cairo_rectangle_int_t *sample,
const cairo_rectangle_int_t *extents,
cairo_bool_t use_texgen)
{
const cairo_surface_pattern_t *src = (cairo_surface_pattern_t *)_src;
cairo_gl_surface_t *surface;
cairo_surface_attributes_t *attributes;
cairo_int_status_t status;
surface = (cairo_gl_surface_t *) src->surface;
if (surface->base.type != CAIRO_SURFACE_TYPE_GL)
return CAIRO_INT_STATUS_UNSUPPORTED;
if (surface->base.backend->type != CAIRO_SURFACE_TYPE_GL) {
if (_cairo_surface_is_subsurface (&surface->base))
return _cairo_gl_subsurface_operand_init (operand, _src, dst,
sample, extents,
use_texgen);
return CAIRO_INT_STATUS_UNSUPPORTED;
}
if (surface->base.device && surface->base.device != dst->base.device)
return CAIRO_INT_STATUS_UNSUPPORTED;
if (surface->base.device && ! _cairo_gl_surface_is_texture (surface))
return CAIRO_INT_STATUS_UNSUPPORTED;
status = _cairo_gl_surface_resolve_multisampling (surface);
if (unlikely (status))
return status;
_cairo_gl_operand_copy(operand, &surface->operand);
attributes = &operand->texture.attributes;
cairo_matrix_multiply (&attributes->matrix,
&src->base.matrix,
&attributes->matrix);
attributes->extend = src->base.extend;
attributes->filter = src->base.filter;
attributes->has_component_alpha = src->base.has_component_alpha;
operand->texture.texgen = use_texgen;
return CAIRO_STATUS_SUCCESS;
}