CoglPipeline *
_st_create_shadow_pipeline (StShadow *shadow_spec,
CoglTexture *src_texture)
{
ClutterBackend *backend = clutter_get_default_backend ();
CoglContext *ctx = clutter_backend_get_cogl_context (backend);
CoglError *error = NULL;
static CoglPipeline *shadow_pipeline_template = NULL;
CoglPipeline *pipeline;
CoglTexture *texture;
guchar *pixels_in, *pixels_out;
gint width_in, height_in, rowstride_in;
gint width_out, height_out, rowstride_out;
g_return_val_if_fail (shadow_spec != NULL, NULL);
g_return_val_if_fail (src_texture != NULL, NULL);
width_in = cogl_texture_get_width (src_texture);
height_in = cogl_texture_get_height (src_texture);
rowstride_in = (width_in + 3) & ~3;
pixels_in = g_malloc0 (rowstride_in * height_in);
cogl_texture_get_data (src_texture, COGL_PIXEL_FORMAT_A_8,
rowstride_in, pixels_in);
pixels_out = blur_pixels (pixels_in, width_in, height_in, rowstride_in,
shadow_spec->blur,
&width_out, &height_out, &rowstride_out);
g_free (pixels_in);
texture = COGL_TEXTURE (cogl_texture_2d_new_from_data (ctx, width_out, height_out,
COGL_PIXEL_FORMAT_A_8,
rowstride_out,
pixels_out,
&error));
if (error)
{
g_warning ("Failed to allocate texture: %s", error->message);
cogl_error_free (error);
}
g_free (pixels_out);
if (G_UNLIKELY (shadow_pipeline_template == NULL))
{
shadow_pipeline_template = cogl_pipeline_new (ctx);
/* We set up the pipeline to blend the shadow texture with the combine
* constant, but defer setting the latter until painting, so that we can
* take the actor's overall opacity into account. */
cogl_pipeline_set_layer_combine (shadow_pipeline_template, 0,
"RGBA = MODULATE (CONSTANT, TEXTURE[A])",
NULL);
}
pipeline = cogl_pipeline_copy (shadow_pipeline_template);
cogl_pipeline_set_layer_texture (pipeline, 0, texture);
if (texture)
cogl_object_unref (texture);
return pipeline;
}
static CoglHandle
cinnamon_app_create_faded_icon_cpu (StTextureCache *cache,
const char *key,
void *datap,
GError **error)
{
ClutterBackend *backend = clutter_get_default_backend ();
CoglContext *ctx = clutter_backend_get_cogl_context (backend);
CreateFadedIconData *data = datap;
CinnamonApp *app;
GdkPixbuf *pixbuf;
int size;
int scale;
CoglHandle texture;
gint width, height, rowstride;
guint8 n_channels;
gboolean have_alpha;
gint fade_start;
gint fade_range;
guint i, j;
guint pixbuf_byte_size;
guint8 *orig_pixels;
guint8 *pixels;
GIcon *icon;
GtkIconInfo *info;
app = data->app;
size = data->size;
scale = data->scale;
info = NULL;
icon = g_app_info_get_icon (G_APP_INFO (gmenu_tree_entry_get_app_info (app->entry)));
if (icon != NULL)
{
info = gtk_icon_theme_lookup_by_gicon_for_scale (gtk_icon_theme_get_default (),
icon, size, scale,
GTK_ICON_LOOKUP_FORCE_SIZE);
}
if (info == NULL)
{
icon = g_themed_icon_new ("application-x-executable");
info = gtk_icon_theme_lookup_by_gicon_for_scale (gtk_icon_theme_get_default (),
icon, size, scale,
GTK_ICON_LOOKUP_FORCE_SIZE);
g_object_unref (icon);
}
if (info == NULL)
return COGL_INVALID_HANDLE;
pixbuf = gtk_icon_info_load_icon (info, NULL);
gtk_icon_info_free (info);
if (pixbuf == NULL)
return COGL_INVALID_HANDLE;
width = gdk_pixbuf_get_width (pixbuf);
height = gdk_pixbuf_get_height (pixbuf);
rowstride = gdk_pixbuf_get_rowstride (pixbuf);
n_channels = gdk_pixbuf_get_n_channels (pixbuf);
orig_pixels = gdk_pixbuf_get_pixels (pixbuf);
have_alpha = gdk_pixbuf_get_has_alpha (pixbuf);
pixbuf_byte_size = (height - 1) * rowstride +
+ width * ((n_channels * gdk_pixbuf_get_bits_per_sample (pixbuf) + 7) / 8);
pixels = g_malloc0 (rowstride * height);
memcpy (pixels, orig_pixels, pixbuf_byte_size);
fade_start = width / 2;
fade_range = width - fade_start;
for (i = fade_start; i < width; i++)
{
for (j = 0; j < height; j++)
{
guchar *pixel = &pixels[j * rowstride + i * n_channels];
float fade = 1.0 - ((float) i - fade_start) / fade_range;
pixel[0] = 0.5 + pixel[0] * fade;
pixel[1] = 0.5 + pixel[1] * fade;
pixel[2] = 0.5 + pixel[2] * fade;
if (have_alpha)
pixel[3] = 0.5 + pixel[3] * fade;
}
}
texture = COGL_TEXTURE (cogl_texture_2d_new_from_data (ctx, width, height,
have_alpha ? COGL_PIXEL_FORMAT_RGBA_8888 : COGL_PIXEL_FORMAT_RGB_888,
#if COGL_VERSION < COGL_VERSION_ENCODE (1, 18, 0)
COGL_PIXEL_FORMAT_ANY,
#endif
rowstride,
pixels,
NULL));
g_free (pixels);
g_object_unref (pixbuf);
return texture;
}
static void
clutter_deform_effect_paint_target (ClutterOffscreenEffect *effect)
{
ClutterDeformEffect *self= CLUTTER_DEFORM_EFFECT (effect);
ClutterDeformEffectPrivate *priv = self->priv;
CoglHandle material;
CoglPipeline *pipeline;
CoglDepthState depth_state;
CoglFramebuffer *fb = cogl_get_draw_framebuffer ();
if (priv->is_dirty)
{
ClutterRect rect;
gboolean mapped_buffer;
CoglVertexP3T2C4 *verts;
ClutterActor *actor;
gfloat width, height;
guint opacity;
gint i, j;
actor = clutter_actor_meta_get_actor (CLUTTER_ACTOR_META (effect));
opacity = clutter_actor_get_paint_opacity (actor);
/* if we don't have a target size, fall back to the actor's
* allocation, though wrong it might be
*/
if (clutter_offscreen_effect_get_target_rect (effect, &rect))
{
width = clutter_rect_get_width (&rect);
height = clutter_rect_get_height (&rect);
}
else
clutter_actor_get_size (actor, &width, &height);
/* XXX ideally, the sub-classes should tell us what they
* changed in the texture vertices; we then would be able to
* avoid resubmitting the same data, if it did not change. for
* the time being, we resubmit everything
*/
verts = cogl_buffer_map (COGL_BUFFER (priv->buffer),
COGL_BUFFER_ACCESS_WRITE,
COGL_BUFFER_MAP_HINT_DISCARD);
/* If the map failed then we'll resort to allocating a temporary
buffer */
if (verts == NULL)
{
mapped_buffer = FALSE;
verts = g_malloc (sizeof (*verts) * priv->n_vertices);
}
else
mapped_buffer = TRUE;
for (i = 0; i < priv->y_tiles + 1; i++)
{
for (j = 0; j < priv->x_tiles + 1; j++)
{
CoglVertexP3T2C4 *vertex_out;
CoglTextureVertex vertex;
/* CoglTextureVertex isn't an ideal structure to use for
this because it contains a CoglColor. The internal
layout of CoglColor is mean to be private so Clutter
can not pass a pointer to it as a vertex
attribute. Also it contains padding so we end up
storing more data in the vertex buffer than we need
to. Instead we let the application modify a dummy
vertex and then copy the details back out to a more
well-defined struct */
vertex.tx = (float) j / priv->x_tiles;
vertex.ty = (float) i / priv->y_tiles;
vertex.x = width * vertex.tx;
vertex.y = height * vertex.ty;
vertex.z = 0.0f;
cogl_color_init_from_4ub (&vertex.color, 255, 255, 255, opacity);
clutter_deform_effect_deform_vertex (self,
width, height,
&vertex);
vertex_out = verts + i * (priv->x_tiles + 1) + j;
vertex_out->x = vertex.x;
vertex_out->y = vertex.y;
vertex_out->z = vertex.z;
vertex_out->s = vertex.tx;
vertex_out->t = vertex.ty;
vertex_out->r = cogl_color_get_red_byte (&vertex.color);
vertex_out->g = cogl_color_get_green_byte (&vertex.color);
vertex_out->b = cogl_color_get_blue_byte (&vertex.color);
vertex_out->a = cogl_color_get_alpha_byte (&vertex.color);
}
}
if (mapped_buffer)
cogl_buffer_unmap (COGL_BUFFER (priv->buffer));
else
{
cogl_buffer_set_data (COGL_BUFFER (priv->buffer),
0, /* offset */
verts,
sizeof (*verts) * priv->n_vertices);
g_free (verts);
}
priv->is_dirty = FALSE;
}
material = clutter_offscreen_effect_get_target (effect);
pipeline = COGL_PIPELINE (material);
/* enable depth testing */
cogl_depth_state_init (&depth_state);
cogl_depth_state_set_test_enabled (&depth_state, TRUE);
cogl_pipeline_set_depth_state (pipeline, &depth_state, NULL);
/* enable backface culling if we have a back material */
if (priv->back_pipeline != NULL)
cogl_pipeline_set_cull_face_mode (pipeline,
COGL_PIPELINE_CULL_FACE_MODE_BACK);
/* draw the front */
if (material != NULL)
cogl_framebuffer_draw_primitive (fb, pipeline, priv->primitive);
/* draw the back */
if (priv->back_pipeline != NULL)
{
CoglPipeline *back_pipeline;
/* We probably shouldn't be modifying the user's material so
instead we make a temporary copy */
back_pipeline = cogl_pipeline_copy (priv->back_pipeline);
cogl_pipeline_set_depth_state (back_pipeline, &depth_state, NULL);
cogl_pipeline_set_cull_face_mode (pipeline,
COGL_PIPELINE_CULL_FACE_MODE_FRONT);
cogl_framebuffer_draw_primitive (fb, back_pipeline, priv->primitive);
cogl_object_unref (back_pipeline);
}
if (G_UNLIKELY (priv->lines_primitive != NULL))
{
CoglContext *ctx =
clutter_backend_get_cogl_context (clutter_get_default_backend ());
CoglPipeline *lines_pipeline = cogl_pipeline_new (ctx);
cogl_pipeline_set_color4f (lines_pipeline, 1.0, 0, 0, 1.0);
cogl_framebuffer_draw_primitive (fb, lines_pipeline,
priv->lines_primitive);
cogl_object_unref (lines_pipeline);
}
}
static void
clutter_deform_effect_init_arrays (ClutterDeformEffect *self)
{
ClutterDeformEffectPrivate *priv = self->priv;
gint x, y, direction, n_indices;
CoglAttribute *attributes[3];
guint16 *static_indices;
CoglContext *ctx =
clutter_backend_get_cogl_context (clutter_get_default_backend ());
CoglIndices *indices;
guint16 *idx;
int i;
clutter_deform_effect_free_arrays (self);
n_indices = ((2 + 2 * priv->x_tiles)
* priv->y_tiles
+ (priv->y_tiles - 1));
static_indices = g_new (guint16, n_indices);
#define MESH_INDEX(x,y) ((y) * (priv->x_tiles + 1) + (x))
/* compute all the triangles from the various tiles */
direction = 1;
idx = static_indices;
idx[0] = MESH_INDEX (0, 0);
idx[1] = MESH_INDEX (0, 1);
idx += 2;
for (y = 0; y < priv->y_tiles; y++)
{
for (x = 0; x < priv->x_tiles; x++)
{
if (direction)
{
idx[0] = MESH_INDEX (x + 1, y);
idx[1] = MESH_INDEX (x + 1, y + 1);
}
else
{
idx[0] = MESH_INDEX (priv->x_tiles - x - 1, y);
idx[1] = MESH_INDEX (priv->x_tiles - x - 1, y + 1);
}
idx += 2;
}
if (y == (priv->y_tiles - 1))
break;
if (direction)
{
idx[0] = MESH_INDEX (priv->x_tiles, y + 1);
idx[1] = MESH_INDEX (priv->x_tiles, y + 1);
idx[2] = MESH_INDEX (priv->x_tiles, y + 2);
}
else
{
idx[0] = MESH_INDEX (0, y + 1);
idx[1] = MESH_INDEX (0, y + 1);
idx[2] = MESH_INDEX (0, y + 2);
}
idx += 3;
direction = !direction;
}
#undef MESH_INDEX
indices = cogl_indices_new (ctx,
COGL_INDICES_TYPE_UNSIGNED_SHORT,
static_indices,
n_indices);
g_free (static_indices);
priv->n_vertices = (priv->x_tiles + 1) * (priv->y_tiles + 1);
priv->buffer =
cogl_attribute_buffer_new (ctx,
sizeof (CoglVertexP3T2C4) *
priv->n_vertices,
NULL);
/* The application is expected to continuously modify the vertices
so we should give a hint to Cogl about that */
cogl_buffer_set_update_hint (COGL_BUFFER (priv->buffer),
COGL_BUFFER_UPDATE_HINT_DYNAMIC);
attributes[0] = cogl_attribute_new (priv->buffer,
"cogl_position_in",
sizeof (CoglVertexP3T2C4),
G_STRUCT_OFFSET (CoglVertexP3T2C4, x),
3, /* n_components */
COGL_ATTRIBUTE_TYPE_FLOAT);
attributes[1] = cogl_attribute_new (priv->buffer,
"cogl_tex_coord0_in",
sizeof (CoglVertexP3T2C4),
G_STRUCT_OFFSET (CoglVertexP3T2C4, s),
2, /* n_components */
COGL_ATTRIBUTE_TYPE_FLOAT);
attributes[2] = cogl_attribute_new (priv->buffer,
"cogl_color_in",
sizeof (CoglVertexP3T2C4),
G_STRUCT_OFFSET (CoglVertexP3T2C4, r),
4, /* n_components */
COGL_ATTRIBUTE_TYPE_UNSIGNED_BYTE);
priv->primitive =
cogl_primitive_new_with_attributes (COGL_VERTICES_MODE_TRIANGLE_STRIP,
priv->n_vertices,
attributes,
3 /* n_attributes */);
cogl_primitive_set_indices (priv->primitive,
indices,
n_indices);
if (G_UNLIKELY (clutter_paint_debug_flags & CLUTTER_DEBUG_PAINT_DEFORM_TILES))
{
priv->lines_primitive =
cogl_primitive_new_with_attributes (COGL_VERTICES_MODE_LINE_STRIP,
priv->n_vertices,
attributes,
2 /* n_attributes */);
cogl_primitive_set_indices (priv->lines_primitive,
indices,
n_indices);
}
cogl_object_unref (indices);
for (i = 0; i < 3; i++)
cogl_object_unref (attributes[i]);
priv->is_dirty = TRUE;
}
static gboolean
shm_buffer_attach (MetaWaylandBuffer *buffer,
CoglTexture **texture,
gboolean *changed_texture,
GError **error)
{
MetaBackend *backend = meta_get_backend ();
ClutterBackend *clutter_backend = meta_backend_get_clutter_backend (backend);
CoglContext *cogl_context = clutter_backend_get_cogl_context (clutter_backend);
struct wl_shm_buffer *shm_buffer;
int stride, width, height;
CoglPixelFormat format;
CoglTextureComponents components;
CoglBitmap *bitmap;
CoglTexture *new_texture;
shm_buffer = wl_shm_buffer_get (buffer->resource);
stride = wl_shm_buffer_get_stride (shm_buffer);
width = wl_shm_buffer_get_width (shm_buffer);
height = wl_shm_buffer_get_height (shm_buffer);
shm_buffer_get_cogl_pixel_format (shm_buffer, &format, &components);
if (*texture &&
cogl_texture_get_width (*texture) == width &&
cogl_texture_get_height (*texture) == height &&
cogl_texture_get_components (*texture) == components &&
_cogl_texture_get_format (*texture) == format)
{
buffer->is_y_inverted = TRUE;
*changed_texture = FALSE;
return TRUE;
}
cogl_clear_object (texture);
wl_shm_buffer_begin_access (shm_buffer);
bitmap = cogl_bitmap_new_for_data (cogl_context,
width, height,
format,
stride,
wl_shm_buffer_get_data (shm_buffer));
new_texture = COGL_TEXTURE (cogl_texture_2d_new_from_bitmap (bitmap));
cogl_texture_set_components (new_texture, components);
if (!cogl_texture_allocate (new_texture, error))
{
g_clear_pointer (&new_texture, cogl_object_unref);
if (g_error_matches (*error, COGL_TEXTURE_ERROR, COGL_TEXTURE_ERROR_SIZE))
{
CoglTexture2DSliced *texture_sliced;
g_clear_error (error);
texture_sliced =
cogl_texture_2d_sliced_new_from_bitmap (bitmap,
COGL_TEXTURE_MAX_WASTE);
new_texture = COGL_TEXTURE (texture_sliced);
cogl_texture_set_components (new_texture, components);
if (!cogl_texture_allocate (new_texture, error))
g_clear_pointer (&new_texture, cogl_object_unref);
}
}
cogl_object_unref (bitmap);
wl_shm_buffer_end_access (shm_buffer);
if (!new_texture)
return FALSE;
*texture = new_texture;
*changed_texture = TRUE;
buffer->is_y_inverted = TRUE;
return TRUE;
}
static gboolean
egl_image_buffer_attach (MetaWaylandBuffer *buffer,
CoglTexture **texture,
gboolean *changed_texture,
GError **error)
{
MetaBackend *backend = meta_get_backend ();
MetaEgl *egl = meta_backend_get_egl (backend);
ClutterBackend *clutter_backend = meta_backend_get_clutter_backend (backend);
CoglContext *cogl_context = clutter_backend_get_cogl_context (clutter_backend);
EGLDisplay egl_display = cogl_egl_context_get_egl_display (cogl_context);
int format, width, height, y_inverted;
CoglPixelFormat cogl_format;
EGLImageKHR egl_image;
CoglTexture2D *texture_2d;
if (buffer->egl_image.texture)
{
*changed_texture = *texture != buffer->egl_image.texture;
cogl_clear_object (texture);
*texture = cogl_object_ref (buffer->egl_image.texture);
return TRUE;
}
if (!meta_egl_query_wayland_buffer (egl, egl_display, buffer->resource,
EGL_TEXTURE_FORMAT, &format,
error))
return FALSE;
if (!meta_egl_query_wayland_buffer (egl, egl_display, buffer->resource,
EGL_WIDTH, &width,
error))
return FALSE;
if (!meta_egl_query_wayland_buffer (egl, egl_display, buffer->resource,
EGL_HEIGHT, &height,
error))
return FALSE;
if (!meta_egl_query_wayland_buffer (egl, egl_display, buffer->resource,
EGL_WAYLAND_Y_INVERTED_WL, &y_inverted,
NULL))
y_inverted = EGL_TRUE;
switch (format)
{
case EGL_TEXTURE_RGB:
cogl_format = COGL_PIXEL_FORMAT_RGB_888;
break;
case EGL_TEXTURE_RGBA:
cogl_format = COGL_PIXEL_FORMAT_RGBA_8888_PRE;
break;
default:
g_set_error (error, G_IO_ERROR,
G_IO_ERROR_FAILED,
"Unsupported buffer format %d", format);
return FALSE;
}
/* The WL_bind_wayland_display spec states that EGL_NO_CONTEXT is to be used
* in conjunction with the EGL_WAYLAND_BUFFER_WL target. */
egl_image = meta_egl_create_image (egl, egl_display, EGL_NO_CONTEXT,
EGL_WAYLAND_BUFFER_WL, buffer->resource,
NULL,
error);
if (egl_image == EGL_NO_IMAGE_KHR)
return FALSE;
texture_2d = cogl_egl_texture_2d_new_from_image (cogl_context,
width, height,
cogl_format,
egl_image,
error);
meta_egl_destroy_image (egl, egl_display, egl_image, NULL);
if (!texture_2d)
return FALSE;
buffer->egl_image.texture = COGL_TEXTURE (texture_2d);
buffer->is_y_inverted = !!y_inverted;
cogl_clear_object (texture);
*texture = cogl_object_ref (buffer->egl_image.texture);
*changed_texture = TRUE;
return TRUE;
}
static void
ensure_xfixes_cursor (MetaCursorTracker *tracker)
{
MetaDisplay *display = meta_get_display ();
XFixesCursorImage *cursor_image;
CoglTexture2D *sprite;
guint8 *cursor_data;
gboolean free_cursor_data;
CoglContext *ctx;
if (tracker->xfixes_cursor)
return;
cursor_image = XFixesGetCursorImage (display->xdisplay);
if (!cursor_image)
return;
/* Like all X APIs, XFixesGetCursorImage() returns arrays of 32-bit
* quantities as arrays of long; we need to convert on 64 bit */
if (sizeof(long) == 4)
{
cursor_data = (guint8 *)cursor_image->pixels;
free_cursor_data = FALSE;
}
else
{
int i, j;
guint32 *cursor_words;
gulong *p;
guint32 *q;
cursor_words = g_new (guint32, cursor_image->width * cursor_image->height);
cursor_data = (guint8 *)cursor_words;
p = cursor_image->pixels;
q = cursor_words;
for (j = 0; j < cursor_image->height; j++)
for (i = 0; i < cursor_image->width; i++)
*(q++) = *(p++);
free_cursor_data = TRUE;
}
ctx = clutter_backend_get_cogl_context (clutter_get_default_backend ());
sprite = cogl_texture_2d_new_from_data (ctx,
cursor_image->width,
cursor_image->height,
CLUTTER_CAIRO_FORMAT_ARGB32,
cursor_image->width * 4, /* stride */
cursor_data,
NULL);
if (free_cursor_data)
g_free (cursor_data);
if (sprite != NULL)
{
MetaCursorReference *cursor = meta_cursor_reference_take_texture (sprite,
cursor_image->xhot,
cursor_image->yhot);
tracker->xfixes_cursor = cursor;
}
XFree (cursor_image);
}
static void
st_background_effect_init (StBackgroundEffect *self)
{
CoglContext *ctx;
StBackgroundEffectClass *klass = ST_BACKGROUND_EFFECT_GET_CLASS (self);
if (G_UNLIKELY (klass->base_pipeline == NULL))
{
ctx = clutter_backend_get_cogl_context (clutter_get_default_backend ());
klass->base_pipeline = cogl_pipeline_new (ctx);
}
self->pipeline0 = cogl_pipeline_copy (klass->base_pipeline);
self->pipeline1 = cogl_pipeline_copy (klass->base_pipeline);
self->pipeline2 = cogl_pipeline_copy (klass->base_pipeline);
self->pipeline3 = cogl_pipeline_copy (klass->base_pipeline);
self->pipeline4 = cogl_pipeline_copy (klass->base_pipeline);
CoglSnippet *snippet;
snippet = cogl_snippet_new (COGL_SNIPPET_HOOK_TEXTURE_LOOKUP,
box_blur_glsl_declarations,
NULL);
cogl_snippet_set_replace (snippet, box_blur_glsl_shader);
cogl_pipeline_add_layer_snippet (self->pipeline0, 0, snippet);
cogl_pipeline_add_layer_snippet (self->pipeline1, 0, snippet);
cogl_pipeline_add_layer_snippet (self->pipeline3, 0, snippet);
cogl_object_unref (snippet);
cogl_pipeline_set_layer_wrap_mode (self->pipeline0, 0,
COGL_MATERIAL_WRAP_MODE_CLAMP_TO_EDGE);
cogl_pipeline_set_layer_wrap_mode (self->pipeline0, 1,
COGL_PIPELINE_WRAP_MODE_REPEAT);
cogl_pipeline_set_layer_wrap_mode (self->pipeline1, 0,
COGL_MATERIAL_WRAP_MODE_CLAMP_TO_EDGE);
cogl_pipeline_set_layer_wrap_mode (self->pipeline2, 0,
COGL_MATERIAL_WRAP_MODE_CLAMP_TO_EDGE);
cogl_pipeline_set_layer_wrap_mode (self->pipeline3, 0,
COGL_MATERIAL_WRAP_MODE_CLAMP_TO_EDGE);
cogl_pipeline_set_layer_wrap_mode (self->pipeline4, 0,
COGL_MATERIAL_WRAP_MODE_CLAMP_TO_EDGE);
cogl_pipeline_set_cull_face_mode (self->pipeline0,
COGL_PIPELINE_CULL_FACE_MODE_NONE);
cogl_pipeline_set_cull_face_mode (self->pipeline1,
COGL_PIPELINE_CULL_FACE_MODE_NONE);
cogl_pipeline_set_cull_face_mode (self->pipeline2,
COGL_PIPELINE_CULL_FACE_MODE_NONE);
cogl_pipeline_set_cull_face_mode (self->pipeline3,
COGL_PIPELINE_CULL_FACE_MODE_NONE);
cogl_pipeline_set_cull_face_mode (self->pipeline4,
COGL_PIPELINE_CULL_FACE_MODE_NONE);
cogl_pipeline_set_layer_filters (self->pipeline0, 0,
COGL_PIPELINE_FILTER_LINEAR,
COGL_PIPELINE_FILTER_LINEAR);
cogl_pipeline_set_layer_filters (self->pipeline0, 1,
COGL_PIPELINE_FILTER_NEAREST,
COGL_PIPELINE_FILTER_NEAREST);
cogl_pipeline_set_layer_filters (self->pipeline1, 0,
COGL_PIPELINE_FILTER_LINEAR,
COGL_PIPELINE_FILTER_LINEAR);
cogl_pipeline_set_layer_filters (self->pipeline2, 0,
COGL_PIPELINE_FILTER_LINEAR,
COGL_PIPELINE_FILTER_LINEAR);
cogl_pipeline_set_layer_filters (self->pipeline3, 0,
COGL_PIPELINE_FILTER_LINEAR,
COGL_PIPELINE_FILTER_LINEAR);
cogl_pipeline_set_layer_filters (self->pipeline4, 0,
COGL_PIPELINE_FILTER_LINEAR,
COGL_PIPELINE_FILTER_LINEAR);
cogl_pipeline_set_layer_null_texture (self->pipeline0,
0,
COGL_TEXTURE_TYPE_2D);
cogl_pipeline_set_layer_null_texture (self->pipeline1,
0,
COGL_TEXTURE_TYPE_2D);
cogl_pipeline_set_layer_null_texture (self->pipeline2,
0,
COGL_TEXTURE_TYPE_2D);
cogl_pipeline_set_layer_null_texture (self->pipeline3,
0,
COGL_TEXTURE_TYPE_2D);
cogl_pipeline_set_layer_null_texture (self->pipeline4,
0,
COGL_TEXTURE_TYPE_2D);
self->pixel_step_uniform0 =
cogl_pipeline_get_uniform_location (self->pipeline0, "pixel_step");
self->BumpTex_uniform =
cogl_pipeline_get_uniform_location (self->pipeline0, "BumpTex");
self->bump_step_uniform =
cogl_pipeline_get_uniform_location (self->pipeline0, "bump_step");
self->pixel_step_uniform1 =
cogl_pipeline_get_uniform_location (self->pipeline1, "pixel_step");
self->pixel_step_uniform2 =
cogl_pipeline_get_uniform_location (self->pipeline3, "pixel_step");
cogl_pipeline_set_blend (self->pipeline0,
"RGBA = ADD(SRC_COLOR, DST_COLOR*0)",
NULL);
cogl_pipeline_set_blend (self->pipeline1,
"RGBA = ADD (SRC_COLOR*DST_COLOR[A], DST_COLOR*(1-DST_COLOR[A]))",
NULL);
cogl_pipeline_set_color4ub (self->pipeline1,
0xff,
0xff,
0xff,
0xff);
cogl_pipeline_set_alpha_test_function (self->pipeline2,
COGL_PIPELINE_ALPHA_FUNC_LESS,
0.004f);
cogl_pipeline_set_color_mask (self->pipeline2,
COGL_COLOR_MASK_ALPHA);
cogl_pipeline_set_blend (self->pipeline2,
"RGBA = ADD(SRC_COLOR, DST_COLOR*0)",
NULL);
cogl_pipeline_set_alpha_test_function (self->pipeline3,
COGL_PIPELINE_ALPHA_FUNC_GEQUAL,
0.004f);
cogl_pipeline_set_color_mask (self->pipeline3,
COGL_COLOR_MASK_ALL);
cogl_pipeline_set_blend (self->pipeline3,
"RGBA = ADD (SRC_COLOR, DST_COLOR*(1-SRC_COLOR[A]))",
NULL);
cogl_pipeline_set_alpha_test_function (self->pipeline4,
COGL_PIPELINE_ALPHA_FUNC_GEQUAL,
0.004f);
cogl_pipeline_set_color_mask (self->pipeline4,
COGL_COLOR_MASK_ALL);
cogl_pipeline_set_blend (self->pipeline4,
"RGBA = ADD (SRC_COLOR, DST_COLOR*(1-SRC_COLOR[A]))",
NULL);
self->bg_texture = NULL;
self->bg_sub_texture = NULL;
self->bumpmap_location = "/usr/share/cinnamon/bumpmaps/frost.png";
self->bg_bumpmap = cogl_texture_new_from_file (self->bumpmap_location,
COGL_TEXTURE_NO_SLICING,
COGL_PIXEL_FORMAT_RGBA_8888_PRE,
NULL);
if (self->bg_bumpmap != NULL)
{
self->bumptex_width_i = cogl_texture_get_width (self->bg_bumpmap);
self->bumptex_height_i = cogl_texture_get_height (self->bg_bumpmap);
cogl_pipeline_set_layer_texture (self->pipeline0, 1, self->bg_bumpmap);
}
else
{
cogl_pipeline_set_layer_null_texture (self->pipeline0,
1,
COGL_TEXTURE_TYPE_2D);
}
cogl_pipeline_set_layer_combine (self->pipeline0,1,
"RGBA = REPLACE (PREVIOUS)",
NULL);
self->old_time = 0;
self->opacity = 0;
}
static void
make_shadow (MetaShadow *shadow,
cairo_region_t *region)
{
ClutterBackend *backend = clutter_get_default_backend ();
CoglContext *ctx = clutter_backend_get_cogl_context (backend);
CoglError *error = NULL;
int d = get_box_filter_size (shadow->key.radius);
int spread = get_shadow_spread (shadow->key.radius);
cairo_rectangle_int_t extents;
cairo_region_t *row_convolve_region;
cairo_region_t *column_convolve_region;
guchar *buffer;
int buffer_width;
int buffer_height;
int x_offset;
int y_offset;
int n_rectangles, j, k;
cairo_region_get_extents (region, &extents);
/* In the case where top_fade >= 0 and the portion above the top
* edge of the shape will be cropped, it seems like we could create
* a smaller buffer and omit the top portion, but actually, in our
* multi-pass blur algorithm, the blur into the area above the window
* in the first pass will contribute back to the final pixel values
* for the top pixels, so we create a buffer as if we weren't cropping
* and only crop when creating the CoglTexture.
*/
buffer_width = extents.width + 2 * spread;
buffer_height = extents.height + 2 * spread;
/* Round up so we have aligned rows/columns */
buffer_width = (buffer_width + 3) & ~3;
buffer_height = (buffer_height + 3) & ~3;
/* Square buffer allows in-place swaps, which are roughly 70% faster, but we
* don't want to over-allocate too much memory.
*/
if (buffer_height < buffer_width && buffer_height > (3 * buffer_width) / 4)
buffer_height = buffer_width;
if (buffer_width < buffer_height && buffer_width > (3 * buffer_height) / 4)
buffer_width = buffer_height;
buffer = g_malloc0 (buffer_width * buffer_height);
/* Blurring with multiple box-blur passes is fast, but (especially for
* large shadow sizes) we can improve efficiency by restricting the blur
* to the region that actually needs to be blurred.
*/
row_convolve_region = meta_make_border_region (region, spread, spread, FALSE);
column_convolve_region = meta_make_border_region (region, 0, spread, TRUE);
/* Offsets between coordinates of the regions and coordinates in the buffer */
x_offset = spread;
y_offset = spread;
/* Step 1: unblurred image */
n_rectangles = cairo_region_num_rectangles (region);
for (k = 0; k < n_rectangles; k++)
{
cairo_rectangle_int_t rect;
cairo_region_get_rectangle (region, k, &rect);
for (j = y_offset + rect.y; j < y_offset + rect.y + rect.height; j++)
memset (buffer + buffer_width * j + x_offset + rect.x, 255, rect.width);
}
/* Step 2: swap rows and columns */
buffer = flip_buffer (buffer, buffer_width, buffer_height);
/* Step 3: blur rows (really columns) */
blur_rows (column_convolve_region, y_offset, x_offset,
buffer, buffer_height, buffer_width,
d);
/* Step 4: swap rows and columns */
buffer = flip_buffer (buffer, buffer_height, buffer_width);
/* Step 5: blur rows */
blur_rows (row_convolve_region, x_offset, y_offset,
buffer, buffer_width, buffer_height,
d);
/* Step 6: fade out the top, if applicable */
if (shadow->key.top_fade >= 0)
{
for (j = y_offset; j < y_offset + MIN (shadow->key.top_fade, extents.height + shadow->outer_border_bottom); j++)
fade_bytes(buffer + j * buffer_width, buffer_width, j - y_offset, shadow->key.top_fade);
}
/* We offset the passed in pixels to crop off the extra area we allocated at the top
* in the case of top_fade >= 0. We also account for padding at the left for symmetry
* though that doesn't currently occur.
*/
shadow->texture = COGL_TEXTURE (cogl_texture_2d_new_from_data (ctx,
shadow->outer_border_left + extents.width + shadow->outer_border_right,
shadow->outer_border_top + extents.height + shadow->outer_border_bottom,
COGL_PIXEL_FORMAT_A_8,
buffer_width,
(buffer +
(y_offset - shadow->outer_border_top) * buffer_width +
(x_offset - shadow->outer_border_left)),
&error));
if (error)
{
meta_warning ("Failed to allocate shadow texture: %s\n", error->message);
cogl_error_free (error);
}
cairo_region_destroy (row_convolve_region);
cairo_region_destroy (column_convolve_region);
g_free (buffer);
shadow->pipeline = meta_create_texture_pipeline (shadow->texture);
}
static gboolean
setup_framebuffers (StThemeNodeTransition *transition,
const ClutterActorBox *allocation)
{
ClutterBackend *backend = clutter_get_default_backend ();
CoglContext *ctx = clutter_backend_get_cogl_context (backend);
StThemeNodeTransitionPrivate *priv = transition->priv;
CoglColor clear_color = { 0, 0, 0, 0 };
guint width, height;
/* template material to avoid unnecessary shader compilation */
static CoglHandle material_template = COGL_INVALID_HANDLE;
width = priv->offscreen_box.x2 - priv->offscreen_box.x1;
height = priv->offscreen_box.y2 - priv->offscreen_box.y1;
g_return_val_if_fail (width > 0, FALSE);
g_return_val_if_fail (height > 0, FALSE);
if (priv->old_texture)
cogl_handle_unref (priv->old_texture);
priv->old_texture = COGL_TEXTURE (cogl_texture_2d_new_with_size (ctx,
width,
height
#if COGL_VERSION < COGL_VERSION_ENCODE (1, 18, 0)
,COGL_PIXEL_FORMAT_ANY
#endif
));
if (priv->new_texture)
cogl_handle_unref (priv->new_texture);
priv->new_texture = COGL_TEXTURE (cogl_texture_2d_new_with_size (ctx,
width,
height
#if COGL_VERSION < COGL_VERSION_ENCODE (1, 18, 0)
,COGL_PIXEL_FORMAT_ANY
#endif
));
g_return_val_if_fail (priv->old_texture != COGL_INVALID_HANDLE, FALSE);
g_return_val_if_fail (priv->new_texture != COGL_INVALID_HANDLE, FALSE);
if (priv->old_offscreen)
cogl_handle_unref (priv->old_offscreen);
priv->old_offscreen = cogl_offscreen_new_to_texture (priv->old_texture);
if (priv->new_offscreen)
cogl_handle_unref (priv->new_offscreen);
priv->new_offscreen = cogl_offscreen_new_to_texture (priv->new_texture);
g_return_val_if_fail (priv->old_offscreen != COGL_INVALID_HANDLE, FALSE);
g_return_val_if_fail (priv->new_offscreen != COGL_INVALID_HANDLE, FALSE);
if (priv->material == NULL)
{
if (G_UNLIKELY (material_template == COGL_INVALID_HANDLE))
{
material_template = cogl_material_new ();
cogl_material_set_layer_combine (material_template, 0,
"RGBA = REPLACE (TEXTURE)",
NULL);
cogl_material_set_layer_combine (material_template, 1,
"RGBA = INTERPOLATE (PREVIOUS, "
"TEXTURE, "
"CONSTANT[A])",
NULL);
cogl_material_set_layer_combine (material_template, 2,
"RGBA = MODULATE (PREVIOUS, "
"PRIMARY)",
NULL);
}
priv->material = cogl_material_copy (material_template);
}
cogl_material_set_layer (priv->material, 0, priv->new_texture);
cogl_material_set_layer (priv->material, 1, priv->old_texture);
cogl_push_framebuffer (priv->old_offscreen);
cogl_clear (&clear_color, COGL_BUFFER_BIT_COLOR);
cogl_ortho (priv->offscreen_box.x1, priv->offscreen_box.x2,
priv->offscreen_box.y2, priv->offscreen_box.y1,
0.0, 1.0);
st_theme_node_paint (priv->old_theme_node, allocation, 255);
cogl_pop_framebuffer ();
cogl_push_framebuffer (priv->new_offscreen);
cogl_clear (&clear_color, COGL_BUFFER_BIT_COLOR);
cogl_ortho (priv->offscreen_box.x1, priv->offscreen_box.x2,
priv->offscreen_box.y2, priv->offscreen_box.y1,
0.0, 1.0);
st_theme_node_paint (priv->new_theme_node, allocation, 255);
cogl_pop_framebuffer ();
return TRUE;
}
static void
clutter_canvas_emit_draw (ClutterCanvas *self)
{
ClutterCanvasPrivate *priv = self->priv;
int real_width, real_height;
cairo_surface_t *surface;
gboolean mapped_buffer;
unsigned char *data;
CoglBuffer *buffer;
int window_scale = 1;
gboolean res;
cairo_t *cr;
g_assert (priv->height > 0 && priv->width > 0);
priv->dirty = TRUE;
if (priv->scale_factor_set)
window_scale = priv->scale_factor;
else
g_object_get (clutter_settings_get_default (),
"window-scaling-factor", &window_scale,
NULL);
real_width = priv->width * window_scale;
real_height = priv->height * window_scale;
CLUTTER_NOTE (MISC, "Creating Cairo surface with size %d x %d (real: %d x %d, scale: %d)",
priv->width, priv->height,
real_width, real_height,
window_scale);
if (priv->buffer == NULL)
{
CoglContext *ctx;
ctx = clutter_backend_get_cogl_context (clutter_get_default_backend ());
priv->buffer = cogl_bitmap_new_with_size (ctx,
real_width,
real_height,
CLUTTER_CAIRO_FORMAT_ARGB32);
}
buffer = COGL_BUFFER (cogl_bitmap_get_buffer (priv->buffer));
if (buffer == NULL)
return;
cogl_buffer_set_update_hint (buffer, COGL_BUFFER_UPDATE_HINT_DYNAMIC);
data = cogl_buffer_map (buffer,
COGL_BUFFER_ACCESS_READ_WRITE,
COGL_BUFFER_MAP_HINT_DISCARD);
if (data != NULL)
{
int bitmap_stride = cogl_bitmap_get_rowstride (priv->buffer);
surface = cairo_image_surface_create_for_data (data,
CAIRO_FORMAT_ARGB32,
real_width,
real_height,
bitmap_stride);
mapped_buffer = TRUE;
}
else
{
surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
real_width,
real_height);
mapped_buffer = FALSE;
}
cairo_surface_set_device_scale (surface, window_scale, window_scale);
self->priv->cr = cr = cairo_create (surface);
g_signal_emit (self, canvas_signals[DRAW], 0,
cr, priv->width, priv->height,
&res);
#ifdef CLUTTER_ENABLE_DEBUG
if (_clutter_diagnostic_enabled () && cairo_status (cr))
{
g_warning ("Drawing failed for <ClutterCanvas>[%p]: %s",
self,
cairo_status_to_string (cairo_status (cr)));
}
#endif
self->priv->cr = NULL;
cairo_destroy (cr);
if (mapped_buffer)
cogl_buffer_unmap (buffer);
else
{
int size = cairo_image_surface_get_stride (surface) * priv->height;
cogl_buffer_set_data (buffer,
0,
cairo_image_surface_get_data (surface),
size);
}
cairo_surface_destroy (surface);
}
