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cogl-atlas-texture: Split out new_from_bitmap to new_with_size

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This adds a new function called _cogl_atlas_texture_new_with_size. The
old new_from_bitmap function now just calls this and updates the
texture with the data.
This commit is contained in:
Neil Roberts 2010-02-18 16:33:12 +00:00
parent 32c91793e4
commit 9aaaee0308
2 changed files with 57 additions and 30 deletions
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6
clutter/cogl/cogl/cogl-atlas-texture-private.h
View File

@ -63,4 +63,10 @@ _cogl_atlas_texture_new_from_bitmap (CoglBitmap *bmp,
CoglTextureFlags flags,
CoglPixelFormat internal_format);
CoglHandle
_cogl_atlas_texture_new_with_size (unsigned int width,
unsigned int height,
CoglTextureFlags flags,
CoglPixelFormat internal_format);
#endif /* __COGL_ATLAS_TEXTURE_H */

81
clutter/cogl/cogl/cogl-atlas-texture.c
View File

@ -581,26 +581,17 @@ _cogl_atlas_texture_can_use_format (CoglPixelFormat format)
}
CoglHandle
_cogl_atlas_texture_new_from_bitmap (CoglBitmap *bmp,
CoglTextureFlags flags,
CoglPixelFormat internal_format)
_cogl_atlas_texture_new_with_size (unsigned int width,
unsigned int height,
CoglTextureFlags flags,
CoglPixelFormat internal_format)
{
CoglAtlasTexture *atlas_tex;
CoglBitmap *dst_bmp;
CoglBitmap *override_bmp;
GLenum gl_intformat;
GLenum gl_format;
GLenum gl_type;
int bmp_width;
int bmp_height;
CoglPixelFormat bmp_format;
CoglAtlas *atlas;
GSList *l;
_COGL_GET_CONTEXT (ctx, COGL_INVALID_HANDLE);
g_return_val_if_fail (cogl_is_bitmap (bmp), COGL_INVALID_HANDLE);
/* Don't put textures in the atlas if the user has explicitly
requested to disable it */
if (G_UNLIKELY (COGL_DEBUG_ENABLED (COGL_DEBUG_DISABLE_ATLAS)))
@ -612,13 +603,9 @@ _cogl_atlas_texture_new_from_bitmap (CoglBitmap *bmp,
if (flags)
return COGL_INVALID_HANDLE;
bmp_width = _cogl_bitmap_get_width (bmp);
bmp_height = _cogl_bitmap_get_height (bmp);
bmp_format = _cogl_bitmap_get_format (bmp);
/* We can't atlas zero-sized textures because it breaks the atlas
data structure */
if (bmp_width < 1 || bmp_height < 1)
if (width < 1 || height < 1)
return COGL_INVALID_HANDLE;
/* If we can't use FBOs then it will be too slow to migrate textures
@ -626,10 +613,7 @@ _cogl_atlas_texture_new_from_bitmap (CoglBitmap *bmp,
if (!cogl_features_available (COGL_FEATURE_OFFSCREEN))
return COGL_INVALID_HANDLE;
COGL_NOTE (ATLAS, "Adding texture of size %ix%i", bmp_width, bmp_height);
internal_format = _cogl_texture_determine_internal_format (bmp_format,
internal_format);
COGL_NOTE (ATLAS, "Adding texture of size %ix%i", width, height);
/* If the texture is in a strange format then we won't use it */
if (!_cogl_atlas_texture_can_use_format (internal_format))
@ -657,7 +641,7 @@ _cogl_atlas_texture_new_from_bitmap (CoglBitmap *bmp,
/* Try to make some space in the atlas for the texture */
if (_cogl_atlas_reserve_space (atlas = l->data,
/* Add two pixels for the border */
bmp_width + 2, bmp_height + 2,
width + 2, height + 2,
atlas_tex))
{
cogl_object_ref (atlas);
@ -671,7 +655,7 @@ _cogl_atlas_texture_new_from_bitmap (CoglBitmap *bmp,
COGL_NOTE (ATLAS, "Created new atlas for textures: %p", atlas);
if (!_cogl_atlas_reserve_space (atlas,
/* Add two pixels for the border */
bmp_width + 2, bmp_height + 2,
width + 2, height + 2,
atlas_tex))
{
/* Ok, this means we really can't add it to the atlas */
@ -681,6 +665,47 @@ _cogl_atlas_texture_new_from_bitmap (CoglBitmap *bmp,
}
}
atlas_tex->format = internal_format;
atlas_tex->atlas = atlas;
return _cogl_atlas_texture_handle_new (atlas_tex);
}
CoglHandle
_cogl_atlas_texture_new_from_bitmap (CoglBitmap *bmp,
CoglTextureFlags flags,
CoglPixelFormat internal_format)
{
CoglHandle atlas_tex_handle;
CoglAtlasTexture *atlas_tex;
CoglBitmap *dst_bmp;
CoglBitmap *override_bmp;
GLenum gl_intformat;
GLenum gl_format;
GLenum gl_type;
int bmp_width;
int bmp_height;
CoglPixelFormat bmp_format;
_COGL_GET_CONTEXT (ctx, COGL_INVALID_HANDLE);
g_return_val_if_fail (cogl_is_bitmap (bmp), COGL_INVALID_HANDLE);
bmp_width = _cogl_bitmap_get_width (bmp);
bmp_height = _cogl_bitmap_get_height (bmp);
bmp_format = _cogl_bitmap_get_format (bmp);
internal_format = _cogl_texture_determine_internal_format (bmp_format,
internal_format);
atlas_tex_handle = _cogl_atlas_texture_new_with_size (bmp_width, bmp_height,
flags, internal_format);
if (atlas_tex_handle == COGL_INVALID_HANDLE)
return COGL_INVALID_HANDLE;
atlas_tex = atlas_tex_handle;
dst_bmp = _cogl_texture_prepare_for_upload (bmp,
internal_format,
&internal_format,
@ -690,13 +715,9 @@ _cogl_atlas_texture_new_from_bitmap (CoglBitmap *bmp,
if (dst_bmp == NULL)
{
_cogl_atlas_remove (atlas, &atlas_tex->rectangle);
cogl_object_unref (atlas);
g_free (atlas_tex);
cogl_handle_unref (atlas_tex_handle);
return COGL_INVALID_HANDLE;
}
atlas_tex->format = internal_format;
atlas_tex->atlas = atlas;
/* Make another bitmap so that we can override the format */
override_bmp = _cogl_bitmap_new_shared (dst_bmp,
@ -722,7 +743,7 @@ _cogl_atlas_texture_new_from_bitmap (CoglBitmap *bmp,
cogl_object_unref (override_bmp);
return _cogl_atlas_texture_handle_new (atlas_tex);
return atlas_tex_handle;
}
static const CoglTextureVtable