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cogl/pipeline: Refactor pipeline initialization

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Make it a bit easier to follow the construction process and rely on
GObjects zero-initialization in more places.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3446>
This commit is contained in:
Sebastian Wick 2023-12-06 16:17:52 +01:00 committed by Marge Bot
parent f4c6fa949d
commit a9944b27aa
2 changed files with 47 additions and 63 deletions
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2
cogl/cogl/cogl-pipeline-private.h
View file

@ -264,6 +264,8 @@ struct _CoglPipeline
* type to track the tree hierarchy so we can share code... */
CoglNode parent_instance;
CoglContext *context;
/* When weak pipelines are destroyed the user is notified via this
* callback */
CoglPipelineDestroyCallback destroy_callback;

108
cogl/cogl/cogl-pipeline.c
View file

@ -170,18 +170,9 @@ cogl_pipeline_init (CoglPipeline *pipeline)
{
}
/*
* This initializes the first pipeline owned by the Cogl context. All
* subsequently instantiated pipelines created via the cogl_pipeline_new()
* API will initially be a copy of this pipeline.
*
* The default pipeline is the topmost ancestor for all pipelines.
*/
void
_cogl_pipeline_init_default_pipeline (CoglContext *ctx)
static CoglPipelineBigState *
create_default_big_state (void)
{
/* Create new - blank - pipeline */
CoglPipeline *pipeline = g_object_new (COGL_TYPE_PIPELINE, NULL);
/* XXX: NB: It's important that we zero this to avoid polluting
* pipeline hash values with un-initialized data */
CoglPipelineBigState *big_state = g_new0 (CoglPipelineBigState, 1);
@ -190,31 +181,9 @@ _cogl_pipeline_init_default_pipeline (CoglContext *ctx)
CoglPipelineCullFaceState *cull_face_state = &big_state->cull_face_state;
CoglPipelineUniformsState *uniforms_state = &big_state->uniforms_state;
/* Take this opportunity to setup the backends... */
_cogl_pipeline_fragend = &_cogl_pipeline_glsl_fragend;
_cogl_pipeline_progend = &_cogl_pipeline_glsl_progend;
_cogl_pipeline_vertend = &_cogl_pipeline_glsl_vertend;
pipeline->is_weak = FALSE;
pipeline->journal_ref_count = 0;
pipeline->differences = COGL_PIPELINE_STATE_ALL_SPARSE;
pipeline->real_blend_enable = FALSE;
pipeline->layer_differences = NULL;
pipeline->n_layers = 0;
pipeline->big_state = big_state;
pipeline->has_big_state = TRUE;
#ifdef COGL_DEBUG_ENABLED
pipeline->static_breadcrumb = "default pipeline";
pipeline->has_static_breadcrumb = TRUE;
#endif
pipeline->age = 0;
/* Use the same defaults as the GL spec... */
cogl_color_init_from_4ub (&pipeline->color, 0xff, 0xff, 0xff, 0xff);
big_state->user_program = NULL;
big_state->point_size = 0.0f;
cogl_depth_state_init (&big_state->depth_state);
/* Use the same defaults as the GL spec... */
alpha_state->alpha_func = COGL_PIPELINE_ALPHA_FUNC_ALWAYS;
@ -230,12 +199,6 @@ _cogl_pipeline_init_default_pipeline (CoglContext *ctx)
blend_state->blend_src_factor_rgb = GL_ONE;
blend_state->blend_dst_factor_rgb = GL_ONE_MINUS_SRC_ALPHA;
big_state->user_program = NULL;
cogl_depth_state_init (&big_state->depth_state);
big_state->point_size = 0.0f;
cull_face_state->mode = COGL_PIPELINE_CULL_FACE_MODE_NONE;
cull_face_state->front_winding = COGL_WINDING_COUNTER_CLOCKWISE;
@ -243,7 +206,42 @@ _cogl_pipeline_init_default_pipeline (CoglContext *ctx)
_cogl_bitmask_init (&uniforms_state->changed_mask);
uniforms_state->override_values = NULL;
ctx->default_pipeline = pipeline;
return big_state;
}
/*
* This initializes the first pipeline owned by the Cogl context. All
* subsequently instantiated pipelines created via the cogl_pipeline_new()
* API will initially be a copy of this pipeline.
*
* The default pipeline is the topmost ancestor for all pipelines.
*/
void
_cogl_pipeline_init_default_pipeline (CoglContext *context)
{
/* Create new - blank - pipeline */
CoglPipeline *pipeline = g_object_new (COGL_TYPE_PIPELINE, NULL);
pipeline->context = context;
pipeline->differences = COGL_PIPELINE_STATE_ALL_SPARSE;
pipeline->big_state = create_default_big_state ();
pipeline->has_big_state = TRUE;
/* Use the same defaults as the GL spec... */
cogl_color_init_from_4ub (&pipeline->color, 0xff, 0xff, 0xff, 0xff);
#ifdef COGL_ENABLE_DEBUG
pipeline->static_breadcrumb = "default pipeline";
pipeline->has_static_breadcrumb = TRUE;
#endif
context->default_pipeline = pipeline;
/* Take this opportunity to setup the backends... */
_cogl_pipeline_fragend = &_cogl_pipeline_glsl_fragend;
_cogl_pipeline_progend = &_cogl_pipeline_glsl_progend;
_cogl_pipeline_vertend = &_cogl_pipeline_glsl_vertend;
}
@ -323,13 +321,7 @@ _cogl_pipeline_copy (CoglPipeline *src, gboolean is_weak)
{
CoglPipeline *pipeline = g_object_new (COGL_TYPE_PIPELINE, NULL);
pipeline->is_weak = is_weak;
pipeline->journal_ref_count = 0;
pipeline->differences = 0;
pipeline->has_big_state = FALSE;
pipeline->context = src->context;
/* NB: real_blend_enable isn't a sparse property, it's valid for
* every pipeline node so we have fast access to it. */
@ -343,15 +335,8 @@ _cogl_pipeline_copy (CoglPipeline *src, gboolean is_weak)
* you wouldn't have to walk up the ancestry to find the authority
* because the value would be cached directly in each pipeline.
*/
pipeline->layers_cache_dirty = TRUE;
#ifdef COGL_DEBUG_ENABLED
pipeline->has_static_breadcrumb = FALSE;
#endif
pipeline->age = 0;
_cogl_pipeline_set_parent (pipeline, src, !is_weak);
/* The semantics for copying a weak pipeline are that we promote all
@ -375,12 +360,10 @@ _cogl_pipeline_weak_copy (CoglPipeline *pipeline,
void *user_data)
{
CoglPipeline *copy;
CoglPipeline *copy_pipeline;
copy = _cogl_pipeline_copy (pipeline, TRUE);
copy_pipeline = COGL_PIPELINE (copy);
copy_pipeline->destroy_callback = callback;
copy_pipeline->destroy_data = user_data;
copy->destroy_callback = callback;
copy->destroy_data = user_data;
return copy;
}
@ -388,9 +371,8 @@ _cogl_pipeline_weak_copy (CoglPipeline *pipeline,
CoglPipeline *
cogl_pipeline_new (CoglContext *context)
{
CoglPipeline *new;
CoglPipeline *new = cogl_pipeline_copy (context->default_pipeline);
new = cogl_pipeline_copy (context->default_pipeline);
#ifdef COGL_DEBUG_ENABLED
_cogl_pipeline_set_static_breadcrumb (new, "new");
#endif