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gl: Add functions to get the filter and extend of gl operands.

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Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Alexandros Frantzis 2011-03-01 14:50:25 +02:00 • committed by Chris Wilson
parent 7185ce4ddb
commit 63aa65cfbb
2 changed files with 65 additions and 0 deletions
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57
src/cairo-gl-composite.c
View file

@ -308,6 +308,63 @@ _cairo_gl_operand_init (cairo_gl_operand_t *operand,
}
}
cairo_filter_t
_cairo_gl_operand_get_filter (cairo_gl_operand_t *operand)
{
cairo_filter_t filter;
switch ((int) operand->type) {
case CAIRO_GL_OPERAND_TEXTURE:
filter = operand->texture.attributes.filter;
break;
case CAIRO_GL_OPERAND_LINEAR_GRADIENT:
case CAIRO_GL_OPERAND_RADIAL_GRADIENT_A0:
case CAIRO_GL_OPERAND_RADIAL_GRADIENT_NONE:
case CAIRO_GL_OPERAND_RADIAL_GRADIENT_EXT:
filter = CAIRO_FILTER_BILINEAR;
break;
default:
filter = CAIRO_FILTER_DEFAULT;
break;
}
return filter;
}
GLint
_cairo_gl_operand_get_gl_filter (cairo_gl_operand_t *operand)
{
cairo_filter_t filter = _cairo_gl_operand_get_filter (operand);
return filter != CAIRO_FILTER_FAST && filter != CAIRO_FILTER_NEAREST ?
GL_LINEAR :
GL_NEAREST;
}
cairo_extend_t
_cairo_gl_operand_get_extend (cairo_gl_operand_t *operand)
{
cairo_extend_t extend;
switch ((int) operand->type) {
case CAIRO_GL_OPERAND_TEXTURE:
extend = operand->texture.attributes.extend;
break;
case CAIRO_GL_OPERAND_LINEAR_GRADIENT:
case CAIRO_GL_OPERAND_RADIAL_GRADIENT_A0:
case CAIRO_GL_OPERAND_RADIAL_GRADIENT_NONE:
case CAIRO_GL_OPERAND_RADIAL_GRADIENT_EXT:
extend = operand->gradient.extend;
break;
default:
extend = CAIRO_EXTEND_NONE;
break;
}
return extend;
}
cairo_int_status_t
_cairo_gl_composite_set_source (cairo_gl_composite_t *setup,
const cairo_pattern_t *pattern,

8
src/cairo-gl-private.h
View file

@ -575,6 +575,14 @@ cairo_private cairo_status_t
_cairo_gl_dispatch_init(cairo_gl_dispatch_t *dispatch,
cairo_gl_get_proc_addr_func_t get_proc_addr);
cairo_private cairo_filter_t
_cairo_gl_operand_get_filter (cairo_gl_operand_t *operand);
cairo_private GLint
_cairo_gl_operand_get_gl_filter (cairo_gl_operand_t *operand);
cairo_private cairo_extend_t
_cairo_gl_operand_get_extend (cairo_gl_operand_t *operand);
slim_hidden_proto (cairo_gl_surface_create);
slim_hidden_proto (cairo_gl_surface_create_for_texture);