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cogl-texture-atlas: Add some debugging notes

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This adds an 'atlas' category to the COGL_DEBUG environment
variable. When enabled Cogl will display messages when textures are
added to the atlas and when the atlas is reorganized.
This commit is contained in:
Neil Roberts
2009-12-04 18:55:53 +00:00
parent ec547b7ce0
commit f5d43d9b02
3 changed files with 60 additions and 8 deletions
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62
cogl/cogl-atlas-texture.c
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@@ -86,10 +86,24 @@ _cogl_atlas_texture_free (CoglAtlasTexture *atlas_tex)
/* Remove the texture from the atlas */
if (atlas_tex->in_atlas)
cogl_atlas_remove_rectangle ((atlas_tex->format & COGL_A_BIT) ?
ctx->atlas_alpha :
ctx->atlas_no_alpha,
&atlas_tex->rectangle);
{
CoglAtlas *atlas = ((atlas_tex->format & COGL_A_BIT) ?
ctx->atlas_alpha :
ctx->atlas_no_alpha);
cogl_atlas_remove_rectangle (atlas, &atlas_tex->rectangle);
COGL_NOTE (ATLAS, "Removed rectangle sized %ix%i",
atlas_tex->rectangle.width,
atlas_tex->rectangle.height);
COGL_NOTE (ATLAS, "Atlas is %ix%i, has %i textures and is %i%% waste",
cogl_atlas_get_width (atlas),
cogl_atlas_get_height (atlas),
cogl_atlas_get_n_rectangles (atlas),
cogl_atlas_get_remaining_space (atlas) * 100 /
(cogl_atlas_get_width (atlas) *
cogl_atlas_get_height (atlas)));
}
cogl_handle_unref (atlas_tex->sub_texture);
}
@@ -512,7 +526,16 @@ _cogl_atlas_texture_reserve_space (CoglPixelFormat format,
if (*atlas_ptr && cogl_atlas_add_rectangle (*atlas_ptr, width, height,
new_sub_tex,
&new_sub_tex->rectangle))
return TRUE;
{
COGL_NOTE (ATLAS, "Atlas is %ix%i, has %i textures and is %i%% waste",
cogl_atlas_get_width (*atlas_ptr),
cogl_atlas_get_height (*atlas_ptr),
cogl_atlas_get_n_rectangles (*atlas_ptr),
cogl_atlas_get_remaining_space (*atlas_ptr) * 100 /
(cogl_atlas_get_width (*atlas_ptr) *
cogl_atlas_get_height (*atlas_ptr)));
return TRUE;
}
/* We need to reorganise the atlas so we'll get an array of all the
textures currently in the atlas. */
@@ -562,7 +585,10 @@ _cogl_atlas_texture_reserve_space (CoglPixelFormat format,
/* If we can't create an atlas with the texture then give up */
if (new_atlas == NULL)
ret = FALSE;
{
COGL_NOTE (ATLAS, "Could not fit texture in the atlas");
ret = FALSE;
}
else
{
/* We need to migrate the existing textures into a new texture */
@@ -572,6 +598,17 @@ _cogl_atlas_texture_reserve_space (CoglPixelFormat format,
COGL_TEXTURE_NONE,
format);
COGL_NOTE (ATLAS,
"Atlas %s with size %ix%i",
*atlas_ptr == NULL ||
cogl_atlas_get_width (*atlas_ptr) !=
cogl_atlas_get_width (new_atlas) ||
cogl_atlas_get_height (*atlas_ptr) !=
cogl_atlas_get_height (new_atlas) ?
"resized" : "reorganized",
cogl_atlas_get_width (new_atlas),
cogl_atlas_get_height (new_atlas));
if (*atlas_ptr)
{
/* Move all the textures to the right position in the new
@@ -592,6 +629,14 @@ _cogl_atlas_texture_reserve_space (CoglPixelFormat format,
*atlas_ptr = new_atlas;
*atlas_tex_ptr = new_tex;
COGL_NOTE (ATLAS, "Atlas is %ix%i, has %i textures and is %i%% waste",
cogl_atlas_get_width (*atlas_ptr),
cogl_atlas_get_height (*atlas_ptr),
cogl_atlas_get_n_rectangles (*atlas_ptr),
cogl_atlas_get_remaining_space (*atlas_ptr) * 100 /
(cogl_atlas_get_width (*atlas_ptr) *
cogl_atlas_get_height (*atlas_ptr)));
ret = TRUE;
}
@@ -641,10 +686,15 @@ _cogl_atlas_texture_new_from_bitmap (CoglHandle bmp_handle,
return COGL_INVALID_HANDLE;
}
COGL_NOTE (ATLAS, "Adding texture of size %ix%i", bmp->width, bmp->height);
/* If the texture is in a strange format then we can't use it */
if (internal_format != COGL_PIXEL_FORMAT_RGB_888 &&
(internal_format & ~COGL_PREMULT_BIT) != COGL_PIXEL_FORMAT_RGBA_8888)
{
COGL_NOTE (ATLAS, "Texture can not be added because the "
"format is unsupported");
_cogl_texture_upload_data_free (&upload_data);
return COGL_INVALID_HANDLE;
}