mirror of
https://github.com/brl/mutter.git
synced 2024-12-26 04:42:14 +00:00
framebuffer: defer calculating level size until allocation
The plan is to defer more of the work for creating a texture until allocation time, but that means we won't be able to always assume we can query the size of a texture when creating an offscreen framebuffer from a texture (consider for example using _texture_new_from_file() where the size isn't known until the file has been loaded). This defers needing to know the size of the texture underlying an offscreen framebuffer until calling cogl_framebuffer_allocate(). Reviewed-by: Neil Roberts <neil@linux.intel.com> (cherry picked from commit 9688e7dc1eeae3144729dfd4a4bf409620346bf4)
This commit is contained in:
Robert Bragg
parent
08ba5c64b9
commit
96ed01cc18
@ -205,8 +205,6 @@ struct _CoglOffscreen
|
||||
|
||||
CoglTexture *texture;
|
||||
int texture_level;
|
||||
int texture_level_width;
|
||||
int texture_level_height;
|
||||
|
||||
CoglTexture *depth_texture;
|
||||
|
||||
|
||||
@ -643,34 +643,27 @@ _cogl_offscreen_new_with_texture_full (CoglTexture *texture,
|
||||
CoglContext *ctx = texture->context;
|
||||
CoglOffscreen *offscreen;
|
||||
CoglFramebuffer *fb;
|
||||
int level_width;
|
||||
int level_height;
|
||||
CoglOffscreen *ret;
|
||||
|
||||
_COGL_RETURN_VAL_IF_FAIL (cogl_is_texture (texture), NULL);
|
||||
_COGL_RETURN_VAL_IF_FAIL (level < _cogl_texture_get_n_levels (texture),
|
||||
NULL);
|
||||
|
||||
_cogl_texture_get_level_size (texture,
|
||||
level,
|
||||
&level_width,
|
||||
&level_height,
|
||||
NULL);
|
||||
|
||||
offscreen = g_new0 (CoglOffscreen, 1);
|
||||
offscreen->texture = cogl_object_ref (texture);
|
||||
offscreen->texture_level = level;
|
||||
offscreen->texture_level_width = level_width;
|
||||
offscreen->texture_level_height = level_height;
|
||||
offscreen->create_flags = create_flags;
|
||||
|
||||
fb = COGL_FRAMEBUFFER (offscreen);
|
||||
|
||||
/* NB: we can't assume we can query the texture's width yet, since
|
||||
* it might not have been allocated yet and for example if the
|
||||
* texture is being loaded from a file then the file might not
|
||||
* have been read yet. */
|
||||
|
||||
_cogl_framebuffer_init (fb,
|
||||
ctx,
|
||||
COGL_FRAMEBUFFER_TYPE_OFFSCREEN,
|
||||
level_width,
|
||||
level_height);
|
||||
-1, /* unknown width, until allocation */
|
||||
-1); /* unknown height until allocation */
|
||||
|
||||
ret = _cogl_offscreen_object_new (offscreen);
|
||||
|
||||
@ -780,6 +773,13 @@ cogl_framebuffer_allocate (CoglFramebuffer *framebuffer,
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
/* Now that the texture has been allocated we can determine a
|
||||
* size for the framebuffer... */
|
||||
framebuffer->width = cogl_texture_get_width (offscreen->texture);
|
||||
framebuffer->height = cogl_texture_get_height (offscreen->texture);
|
||||
framebuffer->viewport_width = framebuffer->width;
|
||||
framebuffer->viewport_height = framebuffer->height;
|
||||
|
||||
/* Forward the texture format as the internal format of the
|
||||
* framebuffer */
|
||||
framebuffer->internal_format =
|
||||
|
||||
@ -1693,6 +1693,8 @@ _cogl_gles2_offscreen_allocate (CoglOffscreen *offscreen,
|
||||
const CoglWinsysVtable *winsys;
|
||||
CoglError *internal_error = NULL;
|
||||
CoglGLES2Offscreen *gles2_offscreen;
|
||||
int level_width;
|
||||
int level_height;
|
||||
|
||||
if (!framebuffer->allocated &&
|
||||
!cogl_framebuffer_allocate (framebuffer, error))
|
||||
@ -1722,11 +1724,18 @@ _cogl_gles2_offscreen_allocate (CoglOffscreen *offscreen,
|
||||
}
|
||||
|
||||
gles2_offscreen = g_slice_new0 (CoglGLES2Offscreen);
|
||||
|
||||
_cogl_texture_get_level_size (offscreen->texture,
|
||||
offscreen->texture_level,
|
||||
&level_width,
|
||||
&level_height,
|
||||
NULL);
|
||||
|
||||
if (!_cogl_framebuffer_try_creating_gl_fbo (gles2_context->context,
|
||||
offscreen->texture,
|
||||
offscreen->texture_level,
|
||||
offscreen->texture_level_width,
|
||||
offscreen->texture_level_height,
|
||||
level_width,
|
||||
level_height,
|
||||
offscreen->depth_texture,
|
||||
&COGL_FRAMEBUFFER (offscreen)->config,
|
||||
offscreen->allocation_flags,
|
||||
|
||||
@ -734,14 +734,26 @@ _cogl_offscreen_gl_allocate (CoglOffscreen *offscreen,
|
||||
CoglContext *ctx = fb->context;
|
||||
CoglOffscreenAllocateFlags flags;
|
||||
CoglGLFramebuffer *gl_framebuffer = &offscreen->gl_framebuffer;
|
||||
int level_width;
|
||||
int level_height;
|
||||
|
||||
_COGL_RETURN_VAL_IF_FAIL (offscreen->texture_level <
|
||||
_cogl_texture_get_n_levels (offscreen->texture),
|
||||
NULL);
|
||||
|
||||
_cogl_texture_get_level_size (offscreen->texture,
|
||||
offscreen->texture_level,
|
||||
&level_width,
|
||||
&level_height,
|
||||
NULL);
|
||||
|
||||
if (fb->config.depth_texture_enabled &&
|
||||
offscreen->depth_texture == NULL)
|
||||
{
|
||||
offscreen->depth_texture =
|
||||
create_depth_texture (ctx,
|
||||
offscreen->texture_level_width,
|
||||
offscreen->texture_level_height);
|
||||
level_width,
|
||||
level_height);
|
||||
|
||||
if (!cogl_texture_allocate (offscreen->depth_texture, error))
|
||||
{
|
||||
@ -770,8 +782,8 @@ _cogl_offscreen_gl_allocate (CoglOffscreen *offscreen,
|
||||
try_creating_fbo (ctx,
|
||||
offscreen->texture,
|
||||
offscreen->texture_level,
|
||||
offscreen->texture_level_width,
|
||||
offscreen->texture_level_height,
|
||||
level_width,
|
||||
level_height,
|
||||
offscreen->depth_texture,
|
||||
&fb->config,
|
||||
flags = 0,
|
||||
@ -781,8 +793,8 @@ _cogl_offscreen_gl_allocate (CoglOffscreen *offscreen,
|
||||
try_creating_fbo (ctx,
|
||||
offscreen->texture,
|
||||
offscreen->texture_level,
|
||||
offscreen->texture_level_width,
|
||||
offscreen->texture_level_height,
|
||||
level_width,
|
||||
level_height,
|
||||
offscreen->depth_texture,
|
||||
&fb->config,
|
||||
flags = ctx->last_offscreen_allocate_flags,
|
||||
@ -800,8 +812,8 @@ _cogl_offscreen_gl_allocate (CoglOffscreen *offscreen,
|
||||
try_creating_fbo (ctx,
|
||||
offscreen->texture,
|
||||
offscreen->texture_level,
|
||||
offscreen->texture_level_width,
|
||||
offscreen->texture_level_height,
|
||||
level_width,
|
||||
level_height,
|
||||
offscreen->depth_texture,
|
||||
&fb->config,
|
||||
flags = COGL_OFFSCREEN_ALLOCATE_FLAG_DEPTH_STENCIL,
|
||||
@ -810,8 +822,8 @@ _cogl_offscreen_gl_allocate (CoglOffscreen *offscreen,
|
||||
try_creating_fbo (ctx,
|
||||
offscreen->texture,
|
||||
offscreen->texture_level,
|
||||
offscreen->texture_level_width,
|
||||
offscreen->texture_level_height,
|
||||
level_width,
|
||||
level_height,
|
||||
offscreen->depth_texture,
|
||||
&fb->config,
|
||||
flags = COGL_OFFSCREEN_ALLOCATE_FLAG_DEPTH |
|
||||
@ -821,8 +833,8 @@ _cogl_offscreen_gl_allocate (CoglOffscreen *offscreen,
|
||||
try_creating_fbo (ctx,
|
||||
offscreen->texture,
|
||||
offscreen->texture_level,
|
||||
offscreen->texture_level_width,
|
||||
offscreen->texture_level_height,
|
||||
level_width,
|
||||
level_height,
|
||||
offscreen->depth_texture,
|
||||
&fb->config,
|
||||
flags = COGL_OFFSCREEN_ALLOCATE_FLAG_STENCIL,
|
||||
@ -831,8 +843,8 @@ _cogl_offscreen_gl_allocate (CoglOffscreen *offscreen,
|
||||
try_creating_fbo (ctx,
|
||||
offscreen->texture,
|
||||
offscreen->texture_level,
|
||||
offscreen->texture_level_width,
|
||||
offscreen->texture_level_height,
|
||||
level_width,
|
||||
level_height,
|
||||
offscreen->depth_texture,
|
||||
&fb->config,
|
||||
flags = COGL_OFFSCREEN_ALLOCATE_FLAG_DEPTH,
|
||||
@ -841,8 +853,8 @@ _cogl_offscreen_gl_allocate (CoglOffscreen *offscreen,
|
||||
try_creating_fbo (ctx,
|
||||
offscreen->texture,
|
||||
offscreen->texture_level,
|
||||
offscreen->texture_level_width,
|
||||
offscreen->texture_level_height,
|
||||
level_width,
|
||||
level_height,
|
||||
offscreen->depth_texture,
|
||||
&fb->config,
|
||||
flags = 0,
|
||||
|
||||
Loading…
Reference in New Issue
Block a user