static void
paint_test_backface_culling (TestState *state)
{
int draw_num;
CoglPipeline *base_pipeline = cogl_pipeline_new ();
CoglColor clear_color;
cogl_ortho (0, state->width, /* left, right */
state->height, 0, /* bottom, top */
-1, 100 /* z near, far */);
cogl_color_init_from_4ub (&clear_color, 0x00, 0x00, 0x00, 0xff);
cogl_clear (&clear_color, COGL_BUFFER_BIT_COLOR | COGL_BUFFER_BIT_STENCIL);
cogl_pipeline_set_layer_texture (base_pipeline, 0, state->texture);
cogl_pipeline_set_layer_filters (base_pipeline, 0,
COGL_PIPELINE_FILTER_NEAREST,
COGL_PIPELINE_FILTER_NEAREST);
/* Render the scene sixteen times to test all of the combinations of
cull face mode, legacy state and winding orders */
for (draw_num = 0; draw_num < 16; draw_num++)
{
float x1 = 0, x2, y1 = 0, y2 = (float)(TEXTURE_RENDER_SIZE);
CoglTextureVertex verts[4];
CoglPipeline *pipeline;
cogl_push_matrix ();
cogl_translate (0, TEXTURE_RENDER_SIZE * draw_num, 0);
pipeline = cogl_pipeline_copy (base_pipeline);
cogl_set_backface_culling_enabled (USE_LEGACY_STATE (draw_num));
cogl_pipeline_set_front_face_winding (pipeline, FRONT_WINDING (draw_num));
cogl_pipeline_set_cull_face_mode (pipeline, CULL_FACE_MODE (draw_num));
cogl_push_source (pipeline);
memset (verts, 0, sizeof (verts));
x2 = x1 + (float)(TEXTURE_RENDER_SIZE);
/* Draw a front-facing texture */
cogl_rectangle (x1, y1, x2, y2);
x1 = x2;
x2 = x1 + (float)(TEXTURE_RENDER_SIZE);
/* Draw a front-facing texture with flipped texcoords */
cogl_rectangle_with_texture_coords (x1, y1, x2, y2,
1.0, 0.0, 0.0, 1.0);
x1 = x2;
x2 = x1 + (float)(TEXTURE_RENDER_SIZE);
/* Draw a back-facing texture */
cogl_rectangle (x2, y1, x1, y2);
x1 = x2;
x2 = x1 + (float)(TEXTURE_RENDER_SIZE);
/* If the texture is sliced then cogl_polygon doesn't work so
we'll just use a solid color instead */
if (cogl_texture_is_sliced (state->texture))
cogl_set_source_color4ub (255, 0, 0, 255);
/* Draw a front-facing polygon */
verts[0].x = x1; verts[0].y = y2;
verts[1].x = x2; verts[1].y = y2;
verts[2].x = x2; verts[2].y = y1;
verts[3].x = x1; verts[3].y = y1;
verts[0].tx = 0; verts[0].ty = 0;
verts[1].tx = 1.0; verts[1].ty = 0;
verts[2].tx = 1.0; verts[2].ty = 1.0;
verts[3].tx = 0; verts[3].ty = 1.0;
cogl_polygon (verts, 4, FALSE);
x1 = x2;
x2 = x1 + (float)(TEXTURE_RENDER_SIZE);
/* Draw a back-facing polygon */
verts[0].x = x1; verts[0].y = y1;
verts[1].x = x2; verts[1].y = y1;
verts[2].x = x2; verts[2].y = y2;
verts[3].x = x1; verts[3].y = y2;
verts[0].tx = 0; verts[0].ty = 0;
verts[1].tx = 1.0; verts[1].ty = 0;
verts[2].tx = 1.0; verts[2].ty = 1.0;
verts[3].tx = 0; verts[3].ty = 1.0;
cogl_polygon (verts, 4, FALSE);
x1 = x2;
x2 = x1 + (float)(TEXTURE_RENDER_SIZE);
cogl_pop_matrix ();
cogl_pop_source ();
cogl_object_unref (pipeline);
}
cogl_object_unref (base_pipeline);
}
static void
mx_scroll_view_paint (ClutterActor *actor)
{
ClutterActorBox box;
gfloat w, h;
MxAdjustment *vadjustment = NULL, *hadjustment = NULL;
MxScrollViewPrivate *priv = MX_SCROLL_VIEW (actor)->priv;
ClutterColor *color;
guint8 r, g, b;
const gint shadow = 15;
mx_stylable_get (MX_STYLABLE (actor), "background-color", &color, NULL);
r = color->red;
g = color->green;
b = color->blue;
clutter_color_free (color);
/* MxBin will paint the child */
CLUTTER_ACTOR_CLASS (mx_scroll_view_parent_class)->paint (actor);
clutter_actor_get_allocation_box (actor, &box);
w = box.x2 - box.x1;
h = box.y2 - box.y1;
/* paint our custom children */
if (CLUTTER_ACTOR_IS_VISIBLE (priv->hscroll))
{
clutter_actor_paint (priv->hscroll);
clutter_actor_get_allocation_box (priv->hscroll, &box);
h -= (box.y2 - box.y1);
hadjustment = mx_scroll_bar_get_adjustment (MX_SCROLL_BAR(priv->hscroll));
}
if (CLUTTER_ACTOR_IS_VISIBLE (priv->vscroll))
{
clutter_actor_paint (priv->vscroll);
clutter_actor_get_allocation_box (priv->vscroll, &box);
w -= (box.x2 - box.x1);
vadjustment = mx_scroll_bar_get_adjustment (MX_SCROLL_BAR(priv->vscroll));
}
/* set up the matrial using dummy set source call */
cogl_set_source_color4ub (0, 0, 0, 0);
if (vadjustment)
{
gdouble len;
if ((len = mx_adjustment_get_value (vadjustment)) > 0)
{
CoglTextureVertex top[4] = { { 0,}, };
if (len > shadow)
len = shadow;
top[1].x = w;
top[2].x = w;
top[2].y = len;
top[3].y = len;
cogl_color_set_from_4ub (&top[0].color, r, g, b, 0xff);
cogl_color_set_from_4ub (&top[1].color, r, g, b, 0xff);
cogl_color_set_from_4ub (&top[2].color, 0, 0, 0, 0);
cogl_color_set_from_4ub (&top[3].color, 0, 0, 0, 0);
cogl_polygon (top, 4, TRUE);
}
if ((len = (mx_adjustment_get_upper (vadjustment)
- mx_adjustment_get_page_size (vadjustment))
- mx_adjustment_get_value (vadjustment)) > 0)
{
CoglTextureVertex bottom[4] = { {0, }, };
if (len > shadow)
len = shadow;
bottom[0].x = w;
bottom[0].y = h;
bottom[1].y = h;
bottom[2].y = h - len;
bottom[3].x = w;
bottom[3].y = h - len;
cogl_color_set_from_4ub (&bottom[0].color, r, g, b, 0xff);
cogl_color_set_from_4ub (&bottom[1].color, r, g, b, 0xff);
cogl_color_set_from_4ub (&bottom[2].color, 0, 0, 0, 0);
cogl_color_set_from_4ub (&bottom[3].color, 0, 0, 0, 0);
cogl_polygon (bottom, 4, TRUE);
}
}
if (hadjustment)
{
gdouble len;
if ((len = mx_adjustment_get_value (hadjustment)) > 0)
{
CoglTextureVertex left[4] = { { 0, }, };
if (len > shadow)
len = shadow;
left[0].y = h;
left[2].x = len;
left[3].x = len;
left[3].y = h;
cogl_color_set_from_4ub (&left[0].color, r, g, b, 0xff);
cogl_color_set_from_4ub (&left[1].color, r, g, b, 0xff);
cogl_color_set_from_4ub (&left[2].color, 0, 0, 0, 0);
cogl_color_set_from_4ub (&left[3].color, 0, 0, 0, 0);
cogl_polygon (left, 4, TRUE);
}
if ((len = (mx_adjustment_get_upper (hadjustment)
- mx_adjustment_get_page_size (hadjustment))
- mx_adjustment_get_value (hadjustment)) > 0)
{
CoglTextureVertex right[4] = { { 0, }, };
if (len > shadow)
len = shadow;
right[0].x = w;
right[1].x = w;
right[1].y = h;
right[2].x = w - len;
right[2].y = h;
right[3].x = w - len;
cogl_color_set_from_4ub (&right[0].color, r, g, b, 0xff);
cogl_color_set_from_4ub (&right[1].color, r, g, b, 0xff);
cogl_color_set_from_4ub (&right[2].color, 0, 0, 0, 0);
cogl_color_set_from_4ub (&right[3].color, 0, 0, 0, 0);
cogl_polygon (right, 4, TRUE);
}
}
}
static void _clone_paint_cb (ClutterActor *actor) {
ClutterActor *source;
ClutterActorBox box;
CoglHandle material;
gfloat width, height;
guint8 opacity;
CoglColor color_1, color_2;
CoglTextureVertex vertices[4];
/* if we don't have a source actor, don't paint */
source = clutter_clone_get_source (CLUTTER_CLONE (actor));
if (source == NULL)
goto out;
/* if the source texture does not have any content, don't paint */
material = clutter_texture_get_cogl_material (CLUTTER_TEXTURE (source));
if (material == NULL)
goto out;
/* get the size of the reflection */
clutter_actor_get_allocation_box (actor, &box);
clutter_actor_box_get_size (&box, &width, &height);
/* get the composite opacity of the actor */
opacity = clutter_actor_get_paint_opacity (actor);
/* figure out the two colors for the reflection: the first is
* full color and the second is the same, but at 0 opacity
*/
cogl_color_init_from_4f (&color_1, 1.0, 1.0, 1.0, opacity / 255.0);
cogl_color_premultiply (&color_1);
cogl_color_init_from_4f (&color_2, 1.0, 1.0, 1.0, 0.0);
cogl_color_premultiply (&color_2);
/* now describe the four vertices of the quad; since it has
* to be a reflection, we need to invert it as well
*/
vertices[0].x = 0; vertices[0].y = 0; vertices[0].z = 0;
vertices[0].tx = 0.0; vertices[0].ty = 1.0;
vertices[0].color = color_1;
vertices[1].x = width; vertices[1].y = 0; vertices[1].z = 0;
vertices[1].tx = 1.0; vertices[1].ty = 1.0;
vertices[1].color = color_1;
vertices[2].x = width; vertices[2].y = height; vertices[2].z = 0;
vertices[2].tx = 1.0; vertices[2].ty = 0.0;
vertices[2].color = color_2;
vertices[3].x = 0; vertices[3].y = height; vertices[3].z = 0;
vertices[3].tx = 0.0; vertices[3].ty = 0.0;
vertices[3].color = color_2;
/* paint the same texture but with a different geometry */
cogl_set_source (material);
cogl_polygon (vertices, 4, TRUE);
out:
/* prevent the default clone handler from running */
g_signal_stop_emission_by_name (actor, "paint");
}
