Ejemplos de _cairo_gl_composite_setup_painted_clipping en C++ (Cpp)

Ejemplo n.º 1

Archivo: cairo-gl-composite.c Proyecto: csyuschmjuh/cairo-nsgl

static cairo_int_status_t
_cairo_gl_composite_setup_clipping (cairo_gl_composite_t *setup,
				    cairo_gl_context_t *ctx,
				    int vertex_size)
{

    if (! _cairo_gl_context_is_flushed (ctx) &&
	(! cairo_region_equal (ctx->clip_region, setup->clip_region) ||
	 ! _cairo_clip_equal (ctx->clip, setup->clip)))
	_cairo_gl_composite_flush (ctx);

    cairo_region_destroy (ctx->clip_region);
    ctx->clip_region = cairo_region_reference (setup->clip_region);
    _cairo_clip_destroy (ctx->clip);
    ctx->clip = _cairo_clip_copy (setup->clip);

    assert (!setup->clip_region || !setup->clip);

    if (ctx->clip_region) {
	_disable_stencil_buffer ();
	glEnable (GL_SCISSOR_TEST);
	return CAIRO_INT_STATUS_SUCCESS;
    }

    if (ctx->clip)
	return _cairo_gl_composite_setup_painted_clipping (setup, ctx,
							   vertex_size);

    _disable_stencil_buffer ();
    glDisable (GL_SCISSOR_TEST);
    return CAIRO_INT_STATUS_SUCCESS;
}

Ejemplo n.º 2

Archivo: cairo-gl-composite.c Proyecto: AaronNGray/texlive-libs

static cairo_int_status_t
_cairo_gl_composite_setup_clipping (cairo_gl_composite_t *setup,
				    cairo_gl_context_t *ctx,
				    int vertex_size)
{
    cairo_bool_t clip_changing = TRUE;
    cairo_bool_t clip_region_changing = TRUE;

    if (! ctx->clip && ! setup->clip && ! setup->clip_region && ! ctx->clip_region)
	goto disable_all_clipping;

    clip_changing = ! _cairo_clip_equal (ctx->clip, setup->clip);
    clip_region_changing = ! cairo_region_equal (ctx->clip_region, setup->clip_region);
    if (! _cairo_gl_context_is_flushed (ctx) &&
	(clip_region_changing || clip_changing))
	_cairo_gl_composite_flush (ctx);

    assert (!setup->clip_region || !setup->clip);

    /* setup->clip is only used by the msaa compositor and setup->clip_region
     * only by the other compositors, so it's safe to wait to clean up obsolete
     * clips. */
    if (clip_region_changing) {
	cairo_region_destroy (ctx->clip_region);
	ctx->clip_region = cairo_region_reference (setup->clip_region);
    }
    if (clip_changing) {
	_cairo_clip_destroy (ctx->clip);
	ctx->clip = _cairo_clip_copy (setup->clip);
    }

    /* For clip regions, we scissor right before drawing. */
    if (setup->clip_region)
	goto disable_all_clipping;

    if (setup->clip)
	return _cairo_gl_composite_setup_painted_clipping (setup, ctx,
                                                           vertex_size);
disable_all_clipping:
    _disable_stencil_buffer ();
    glDisable (GL_SCISSOR_TEST);
    return CAIRO_INT_STATUS_SUCCESS;
}