CoglXlibRenderer *
_cogl_xlib_renderer_get_data (CoglRenderer *renderer)
{
static CoglUserDataKey key;
CoglXlibRenderer *data;
/* Constructs a CoglXlibRenderer struct on demand and attaches it to
the object using user data. It's done this way instead of using a
subclassing hierarchy in the winsys data because all EGL winsys's
need the EGL winsys data but only one of them wants the Xlib
data. */
data = cogl_object_get_user_data (COGL_OBJECT (renderer), &key);
if (data == NULL)
{
data = g_slice_new0 (CoglXlibRenderer);
cogl_object_set_user_data (COGL_OBJECT (renderer),
&key,
data,
destroy_xlib_renderer_data);
}
return data;
}
void
rut_camera_suspend (RutCamera *camera)
{
CameraFlushState *state;
/* There's not point suspending a frame that hasn't been flushed */
g_return_if_fail (camera->in_frame == TRUE);
g_return_if_fail (camera->suspended == FALSE);
state = cogl_object_get_user_data (COGL_OBJECT (camera->fb), &fb_camera_key);
/* We only expect to be saving a camera that has been flushed */
g_return_if_fail (state != NULL);
/* While the camera is in a suspended state we aren't expecting the
* camera to be touched but we want to double check that at least
* the transform hasn't been touched when we come to resume the
* camera... */
camera->at_suspend_transform_age = camera->transform_age;
/* When we resume the camer we'll need to restore the modelview,
* projection and viewport transforms. The easiest way for us to
* handle restoring the modelview is to use the framebuffer's
* matrix stack... */
cogl_framebuffer_push_matrix (camera->fb);
camera->suspended = TRUE;
camera->in_frame = FALSE;
}
CoglBitmap *
_cogl_bitmap_new_with_malloc_buffer (CoglContext *context,
unsigned int width,
unsigned int height,
CoglPixelFormat format,
CoglError **error)
{
static CoglUserDataKey bitmap_free_key;
int bpp = _cogl_pixel_format_get_bytes_per_pixel (format);
int rowstride = ((width * bpp) + 3) & ~3;
uint8_t *data = g_try_malloc (rowstride * height);
CoglBitmap *bitmap;
if (!data)
{
_cogl_set_error (error,
COGL_SYSTEM_ERROR,
COGL_SYSTEM_ERROR_NO_MEMORY,
"Failed to allocate memory for bitmap");
return NULL;
}
bitmap = cogl_bitmap_new_for_data (context,
width, height,
format,
rowstride,
data);
cogl_object_set_user_data (COGL_OBJECT (bitmap),
&bitmap_free_key,
data,
g_free);
return bitmap;
}
CoglBitmap *
_cogl_bitmap_from_file (const char *filename,
GError **error)
{
static CoglUserDataKey bitmap_data_key;
CoglBitmap *bmp;
int stb_pixel_format;
int width;
int height;
uint8_t *pixels;
_COGL_GET_CONTEXT (ctx, NULL);
_COGL_RETURN_VAL_IF_FAIL (error == NULL || *error == NULL, FALSE);
/* Load from file using stb */
pixels = stbi_load (filename,
&width, &height, &stb_pixel_format,
STBI_rgb_alpha);
if (pixels == NULL)
return FALSE;
/* Store bitmap info */
bmp = cogl_bitmap_new_for_data (ctx,
width, height,
COGL_PIXEL_FORMAT_RGBA_8888,
width * 4, /* rowstride */
pixels);
/* Register a destroy function so the pixel data will be freed
automatically when the bitmap object is destroyed */
cogl_object_set_user_data (COGL_OBJECT (bmp), &bitmap_data_key, pixels, free);
return bmp;
}
static void
_rut_camera_flush_transforms (RutCamera *camera)
{
const CoglMatrix *projection;
CoglFramebuffer *fb = camera->fb;
CameraFlushState *state;
/* While a camera is in a suspended state then we don't expect to
* _flush() and use that camera before it is restored. */
g_return_if_fail (camera->suspended == FALSE);
state = cogl_object_get_user_data (COGL_OBJECT (fb), &fb_camera_key);
if (!state)
{
state = g_slice_new (CameraFlushState);
cogl_object_set_user_data (COGL_OBJECT (fb),
&fb_camera_key,
state,
free_camera_flush_state);
}
else if (state->current_camera == camera &&
camera->transform_age == state->transform_age)
goto done;
if (camera->in_frame)
{
g_warning ("Un-balanced rut_camera_flush/_end calls: "
"repeat _flush() calls before _end()");
}
cogl_framebuffer_set_viewport (fb,
camera->viewport[0],
camera->viewport[1],
camera->viewport[2],
camera->viewport[3]);
projection = rut_camera_get_projection (camera);
cogl_framebuffer_set_projection_matrix (fb, projection);
cogl_framebuffer_set_modelview_matrix (fb, &camera->view);
state->current_camera = camera;
state->transform_age = camera->transform_age;
done:
camera->in_frame = TRUE;
}
static void
dirty_glsl_shader_state (CoglPipeline *pipeline)
{
cogl_object_set_user_data (COGL_OBJECT (pipeline),
&glsl_priv_key,
NULL,
destroy_glsl_priv);
}
static void
dirty_shader_state (CoglPipeline *pipeline)
{
cogl_object_set_user_data (COGL_OBJECT (pipeline),
&shader_state_key,
NULL,
NULL);
}
static void
set_shader_state (CoglPipeline *pipeline, CoglPipelineShaderState *shader_state)
{
_cogl_object_set_user_data (COGL_OBJECT (pipeline),
&shader_state_key,
shader_state,
destroy_shader_state);
}
static void
set_glsl_priv (CoglPipeline *pipeline, CoglPipelineVertendPrivate *priv)
{
cogl_object_set_user_data (COGL_OBJECT (pipeline),
&glsl_priv_key,
priv,
destroy_glsl_priv);
}
void
_cogl_texture_associate_framebuffer (CoglHandle handle,
CoglFramebuffer *framebuffer)
{
CoglTexture *tex = COGL_TEXTURE (handle);
static CoglUserDataKey framebuffer_destroy_notify_key;
/* Note: we don't take a reference on the framebuffer here because
* that would introduce a circular reference. */
tex->framebuffers = g_list_prepend (tex->framebuffers, framebuffer);
/* Since we haven't taken a reference on the framebuffer we setup
* some private data so we will be notified if it is destroyed... */
_cogl_object_set_user_data (COGL_OBJECT (framebuffer),
&framebuffer_destroy_notify_key,
tex,
_cogl_texture_framebuffer_destroy_cb);
}
static void
set_shader_state (CoglPipeline *pipeline, CoglPipelineShaderState *shader_state)
{
if (shader_state)
{
shader_state->ref_count++;
/* If we're not setting the state on the template pipeline then
* mark it as a usage of the pipeline cache entry */
if (shader_state->cache_entry &&
shader_state->cache_entry->pipeline != pipeline)
shader_state->cache_entry->usage_count++;
}
_cogl_object_set_user_data (COGL_OBJECT (pipeline),
&shader_state_key,
shader_state,
destroy_shader_state);
}
void
rut_camera_resume (RutCamera *camera)
{
CameraFlushState *state;
CoglFramebuffer *fb = camera->fb;
g_return_if_fail (camera->in_frame == FALSE);
g_return_if_fail (camera->suspended == TRUE);
/* While a camera is in a suspended state we don't expect the camera
* to be touched so its transforms shouldn't have changed... */
g_return_if_fail (camera->at_suspend_transform_age == camera->transform_age);
state = cogl_object_get_user_data (COGL_OBJECT (fb), &fb_camera_key);
/* We only expect to be restoring a camera that has been flushed
* before */
g_return_if_fail (state != NULL);
cogl_framebuffer_pop_matrix (fb);
/* If the save turned out to be redundant then we have nothing
* else to restore... */
if (state->current_camera == camera)
goto done;
cogl_framebuffer_set_viewport (fb,
camera->viewport[0],
camera->viewport[1],
camera->viewport[2],
camera->viewport[3]);
cogl_framebuffer_set_projection_matrix (fb, &camera->projection);
state->current_camera = camera;
state->transform_age = camera->transform_age;
done:
camera->in_frame = TRUE;
camera->suspended = FALSE;
}
CoglBitmap *
_cogl_bitmap_from_file (const char *filename,
GError **error)
{
static CoglUserDataKey pixbuf_key;
GdkPixbuf *pixbuf;
CoglBool has_alpha;
GdkColorspace color_space;
CoglPixelFormat pixel_format;
int width;
int height;
int rowstride;
int bits_per_sample;
int n_channels;
CoglBitmap *bmp;
_COGL_GET_CONTEXT (ctx, NULL);
_COGL_RETURN_VAL_IF_FAIL (error == NULL || *error == NULL, FALSE);
/* Load from file using GdkPixbuf */
pixbuf = gdk_pixbuf_new_from_file (filename, error);
if (pixbuf == NULL)
return FALSE;
/* Get pixbuf properties */
has_alpha = gdk_pixbuf_get_has_alpha (pixbuf);
color_space = gdk_pixbuf_get_colorspace (pixbuf);
width = gdk_pixbuf_get_width (pixbuf);
height = gdk_pixbuf_get_height (pixbuf);
rowstride = gdk_pixbuf_get_rowstride (pixbuf);
bits_per_sample = gdk_pixbuf_get_bits_per_sample (pixbuf);
n_channels = gdk_pixbuf_get_n_channels (pixbuf);
/* According to current docs this should be true and so
* the translation to cogl pixel format below valid */
g_assert (bits_per_sample == 8);
if (has_alpha)
g_assert (n_channels == 4);
else
g_assert (n_channels == 3);
/* Translate to cogl pixel format */
switch (color_space)
{
case GDK_COLORSPACE_RGB:
/* The only format supported by GdkPixbuf so far */
pixel_format = has_alpha ?
COGL_PIXEL_FORMAT_RGBA_8888 :
COGL_PIXEL_FORMAT_RGB_888;
break;
default:
/* Ouch, spec changed! */
g_object_unref (pixbuf);
return FALSE;
}
/* We just use the data directly from the pixbuf so that we don't
have to copy to a seperate buffer. Note that Cogl is expected not
to read past the end of bpp*width on the last row even if the
rowstride is much larger so we don't need to worry about
GdkPixbuf's semantics that it may under-allocate the buffer. */
bmp = cogl_bitmap_new_for_data (ctx,
width,
height,
pixel_format,
rowstride,
gdk_pixbuf_get_pixels (pixbuf));
cogl_object_set_user_data (COGL_OBJECT (bmp),
&pixbuf_key,
pixbuf,
g_object_unref);
return bmp;
}
static CoglPipelineShaderState *
get_shader_state (CoglPipeline *pipeline)
{
return cogl_object_get_user_data (COGL_OBJECT (pipeline), &shader_state_key);
}
static CoglPipelineVertendPrivate *
get_glsl_priv (CoglPipeline *pipeline)
{
return cogl_object_get_user_data (COGL_OBJECT (pipeline), &glsl_priv_key);
}
static CoglBool
dump_layer_cb (CoglNode *node, void *user_data)
{
CoglPipelineLayer *layer = COGL_PIPELINE_LAYER (node);
PrintDebugState *state = user_data;
int layer_id = *state->node_id_ptr;
PrintDebugState state_out;
GString *changes_label;
CoglBool changes = FALSE;
if (state->parent_id >= 0)
g_string_append_printf (state->graph, "%*slayer%p -> layer%p;\n",
state->indent, "",
layer->_parent.parent,
layer);
g_string_append_printf (state->graph,
"%*slayer%p [label=\"layer=0x%p\\n"
"ref count=%d\" "
"color=\"blue\"];\n",
state->indent, "",
layer,
layer,
COGL_OBJECT (layer)->ref_count);
changes_label = g_string_new ("");
g_string_append_printf (changes_label,
"%*slayer%p -> layer_state%d [weight=100];\n"
"%*slayer_state%d [shape=box label=\"",
state->indent, "",
layer,
layer_id,
state->indent, "",
layer_id);
if (layer->differences & COGL_PIPELINE_LAYER_STATE_UNIT)
{
changes = TRUE;
g_string_append_printf (changes_label,
"\\lunit=%u\\n",
layer->unit_index);
}
if (layer->differences & COGL_PIPELINE_LAYER_STATE_TEXTURE_DATA)
{
changes = TRUE;
g_string_append_printf (changes_label,
"\\ltexture=%p\\n",
layer->texture);
}
if (changes)
{
g_string_append_printf (changes_label, "\"];\n");
g_string_append (state->graph, changes_label->str);
g_string_free (changes_label, TRUE);
}
state_out.parent_id = layer_id;
state_out.node_id_ptr = state->node_id_ptr;
(*state_out.node_id_ptr)++;
state_out.graph = state->graph;
state_out.indent = state->indent + 2;
_cogl_pipeline_node_foreach_child (COGL_NODE (layer),
dump_layer_cb,
&state_out);
return TRUE;
}
static CoglBool
dump_pipeline_cb (CoglNode *node, void *user_data)
{
CoglPipeline *pipeline = COGL_PIPELINE (node);
PrintDebugState *state = user_data;
int pipeline_id = *state->node_id_ptr;
PrintDebugState state_out;
GString *changes_label;
CoglBool changes = FALSE;
CoglBool layers = FALSE;
if (state->parent_id >= 0)
g_string_append_printf (state->graph, "%*spipeline%d -> pipeline%d;\n",
state->indent, "",
state->parent_id,
pipeline_id);
g_string_append_printf (state->graph,
"%*spipeline%d [label=\"pipeline=0x%p\\n"
"ref count=%d\\n"
"breadcrumb=\\\"%s\\\"\" color=\"red\"];\n",
state->indent, "",
pipeline_id,
pipeline,
COGL_OBJECT (pipeline)->ref_count,
pipeline->has_static_breadcrumb ?
#ifdef COGL_DEBUG_ENABLED
pipeline->static_breadcrumb : "NULL"
#else
"NULL"
#endif
);
changes_label = g_string_new ("");
g_string_append_printf (changes_label,
"%*spipeline%d -> pipeline_state%d [weight=100];\n"
"%*spipeline_state%d [shape=box label=\"",
state->indent, "",
pipeline_id,
pipeline_id,
state->indent, "",
pipeline_id);
if (pipeline->differences & COGL_PIPELINE_STATE_COLOR)
{
changes = TRUE;
g_string_append_printf (changes_label,
"\\lcolor=0x%02X%02X%02X%02X\\n",
cogl_color_get_red_byte (&pipeline->color),
cogl_color_get_green_byte (&pipeline->color),
cogl_color_get_blue_byte (&pipeline->color),
cogl_color_get_alpha_byte (&pipeline->color));
}
if (pipeline->differences & COGL_PIPELINE_STATE_BLEND)
{
const char *blend_enable_name;
changes = TRUE;
switch (pipeline->blend_enable)
{
case COGL_PIPELINE_BLEND_ENABLE_AUTOMATIC:
blend_enable_name = "AUTO";
break;
case COGL_PIPELINE_BLEND_ENABLE_ENABLED:
blend_enable_name = "ENABLED";
break;
case COGL_PIPELINE_BLEND_ENABLE_DISABLED:
blend_enable_name = "DISABLED";
break;
default:
blend_enable_name = "UNKNOWN";
}
g_string_append_printf (changes_label,
"\\lblend=%s\\n",
blend_enable_name);
}
if (pipeline->differences & COGL_PIPELINE_STATE_LAYERS)
{
changes = TRUE;
layers = TRUE;
g_string_append_printf (changes_label, "\\ln_layers=%d\\n",
pipeline->n_layers);
}
if (changes)
{
g_string_append_printf (changes_label, "\"];\n");
g_string_append (state->graph, changes_label->str);
g_string_free (changes_label, TRUE);
}
if (layers)
{
g_list_foreach (pipeline->layer_differences,
(GFunc)dump_layer_ref_cb,
state);
}
state_out.parent_id = pipeline_id;
state_out.node_id_ptr = state->node_id_ptr;
(*state_out.node_id_ptr)++;
state_out.graph = state->graph;
state_out.indent = state->indent + 2;
_cogl_pipeline_node_foreach_child (COGL_NODE (pipeline),
dump_pipeline_cb,
&state_out);
return TRUE;
}
