material-arbfp: Another pass at simplifying the code
Previously the backend private state was used to either link to an authority material or provide authoritative program state. The mechanism seemed overly complex and felt very fragile. I made a recent comment which added a lot of documentation to make it easier to understand but still it didn't feel very elegant. This patch takes a slightly different approach; we now have a ref-counted ArbfpProgramState object which encapsulates a single ARBfp program and the backend private state now just has a single member which is a pointer to one of these arbfp_program_state objects. We no longer need to cache pointers to our arbfp-authority and so we can get rid of a lot of awkward code that ensured these pointers were updated/invalidated at the right times. The program state objects are not tightly bound to a material so it will also allow us to later implement a cache mechanism that lets us share state outside a materials ancestry. This may help to optimize code not following the recommendations of deriving materials from templates, avoiding one-shot materials and not repeatedly modifying materials because even if a material's ancestry doesn't naturally lead us to shareable state we can fallback to searching for shareable state using central hash tables.
This commit is contained in:
Robert Bragg
parent
16c64054b9
commit
cad5624a2a
@ -76,40 +76,73 @@
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typedef struct _UnitState
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{
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int layer_index; /* only valid when the combine constant is dirty */
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int constant_id; /* The program.local[] index */
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unsigned int dirty_combine_constant:1;
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unsigned int sampled:1;
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} UnitState;
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typedef struct _CoglMaterialBackendARBfpPrivate
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typedef struct _ArbfpProgramState
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{
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/* The private state is either used to link to another material
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* called the "arbfp-authority" or it directly tracks the
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* authoritative arbfp private state for a material. */
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int ref_count;
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/* These are used for linking to another material as the arbfp
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* authority. If authoritative state is provided by a priv instance
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* then the authority_cache will simply point back to the same
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* material.
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*
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* It will be NULL when the cache is invalid and
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* find_arbfp_authority() will need to be called to search for the
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* authority. */
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CoglMaterial *authority_cache;
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unsigned long authority_cache_age;
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/* These are used to provide authoritative arbfp state */
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CoglHandle user_program;
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GString *source;
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GLuint gl_program;
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UnitState *unit_state;
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int next_constant_id;
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/* We need to track the last material that an ARBfp program was used
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* with so know if we need to update any program.local parameters. */
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CoglMaterial *last_used_for_material;
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} ArbfpProgramState;
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typedef struct _CoglMaterialBackendARBfpPrivate
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{
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ArbfpProgramState *arbfp_program_state;
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} CoglMaterialBackendARBfpPrivate;
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const CoglMaterialBackend _cogl_material_arbfp_backend;
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static ArbfpProgramState *
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arbfp_program_state_new (int n_layers)
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{
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ArbfpProgramState *state = g_slice_new0 (ArbfpProgramState);
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state->ref_count = 1;
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state->unit_state = g_new0 (UnitState, n_layers);
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return state;
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}
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static ArbfpProgramState *
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arbfp_program_state_ref (ArbfpProgramState *state)
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{
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state->ref_count++;
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return state;
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}
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void
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arbfp_program_state_unref (ArbfpProgramState *state)
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{
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_COGL_GET_CONTEXT (ctx, NO_RETVAL);
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g_return_if_fail (state->ref_count > 0);
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state->ref_count--;
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if (state->ref_count == 0)
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{
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if (state->gl_program)
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{
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GE (glDeletePrograms (1, &state->gl_program));
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state->gl_program = 0;
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}
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g_free (state->unit_state);
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g_slice_free (ArbfpProgramState, state);
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}
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}
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static int
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_cogl_material_backend_arbfp_get_max_texture_units (void)
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{
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@ -259,33 +292,34 @@ find_arbfp_authority (CoglMaterial *material, CoglHandle user_program)
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return authority1;
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}
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static void
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break_arbfp_authority_link (CoglMaterial *material)
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static CoglMaterialBackendARBfpPrivate *
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get_arbfp_priv (CoglMaterial *material)
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{
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if (material->backend_priv_set_mask & COGL_MATERIAL_BACKEND_ARBFP_MASK)
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{
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CoglMaterialBackendARBfpPrivate *priv =
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material->backend_privs[COGL_MATERIAL_BACKEND_ARBFP];
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priv->authority_cache = NULL;
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priv->authority_cache_age = 0;
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}
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if (!(material->backend_priv_set_mask & COGL_MATERIAL_BACKEND_ARBFP_MASK))
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return NULL;
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return material->backend_privs[COGL_MATERIAL_BACKEND_ARBFP];
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}
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static void
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free_authoritative_state (CoglMaterialBackendARBfpPrivate *priv)
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set_arbfp_priv (CoglMaterial *material, CoglMaterialBackendARBfpPrivate *priv)
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{
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_COGL_GET_CONTEXT (ctx, NO_RETVAL);
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priv->user_program = COGL_INVALID_HANDLE;
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if (priv->gl_program)
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if (priv)
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{
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GE (glDeletePrograms (1, &priv->gl_program));
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priv->gl_program = 0;
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material->backend_privs[COGL_MATERIAL_BACKEND_ARBFP] = priv;
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material->backend_priv_set_mask |= COGL_MATERIAL_BACKEND_ARBFP_MASK;
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}
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else
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material->backend_priv_set_mask &= ~COGL_MATERIAL_BACKEND_ARBFP_MASK;
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}
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g_free (priv->unit_state);
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priv->unit_state = NULL;
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static ArbfpProgramState *
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get_arbfp_program_state (CoglMaterial *material)
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{
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CoglMaterialBackendARBfpPrivate *priv = get_arbfp_priv (material);
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if (!priv)
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return NULL;
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return priv->arbfp_program_state;
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}
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static gboolean
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@ -293,8 +327,8 @@ _cogl_material_backend_arbfp_start (CoglMaterial *material,
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int n_layers,
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unsigned long materials_difference)
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{
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CoglMaterial *authority;
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CoglMaterialBackendARBfpPrivate *priv;
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CoglMaterial *authority;
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CoglMaterialBackendARBfpPrivate *authority_priv;
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CoglHandle user_program;
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@ -316,140 +350,80 @@ _cogl_material_backend_arbfp_start (CoglMaterial *material,
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return FALSE;
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/* Now lookup our ARBfp backend private state (allocating if
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* necessary) that may contain a cache pointer refering us to the
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* material's "arbfp-authority".
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*
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* The arbfp-authority is the oldest ancestor whos state will result in
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* the same program being generated.
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*
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* Note: we allocate ARBfp private state for both the given material
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* and the arbfp-authority. The former will simply cache a pointer
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* to the authority and the later will track the arbfp program that
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* we will generate.
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*/
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if (!(material->backend_priv_set_mask & COGL_MATERIAL_BACKEND_ARBFP_MASK))
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* necessary) */
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priv = get_arbfp_priv (material);
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if (!priv)
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{
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material->backend_privs[COGL_MATERIAL_BACKEND_ARBFP] =
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g_slice_new0 (CoglMaterialBackendARBfpPrivate);
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material->backend_priv_set_mask |= COGL_MATERIAL_BACKEND_ARBFP_MASK;
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}
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priv = material->backend_privs[COGL_MATERIAL_BACKEND_ARBFP];
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/* XXX: We are making assumptions that we don't yet support
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* modification of ancestors to optimize the sharing of state in the
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* material graph. When we start to support this then the arbfp
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* backend will somehow need to be notified of graph changes that
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* may invalidate authority_cache pointers.
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*/
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/* If the given material has changed since we last cached its
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* arbfp-authority then invalidate our cache and then search the
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* material's ancestors for one with matching fragment processing
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* state.
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*
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* Note: there are multiple ways a arbfp-authority link may be
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* broken; 1. the authority's age changes (handled here), 2.
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* a material that defers to an authority is reparented will
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* immediatly break any authority link and 3. when a material
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* is modified that defers to an authority it will immediatly
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* break any authority link. See:
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* _cogl_material_backend_arbfp_material_set_parent_notify and
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* _cogl_material_backend_arbfp_material_pre_change_notify
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*/
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if (priv->authority_cache &&
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priv->authority_cache_age !=
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_cogl_material_get_age (priv->authority_cache))
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break_arbfp_authority_link (material);
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/* If the authority cache is invalid then we have to walkt through
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* the materials ancestors to try and find a suitable
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* arbfp-authority... */
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if (!priv->authority_cache)
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{
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priv->authority_cache = find_arbfp_authority (material, user_program);
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priv->authority_cache_age =
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_cogl_material_get_age (priv->authority_cache);
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/* A priv either links to an authority or provides authoritative
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* state, but never both, so if the authority_cache doesn't
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* point back to the current material we need to free any
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* authoritative state... */
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if (priv->authority_cache != material)
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free_authoritative_state (priv);
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priv = g_slice_new0 (CoglMaterialBackendARBfpPrivate);
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set_arbfp_priv (material, priv);
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}
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/* Now we have our arbfp-authority fetch the ARBfp backend private
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* state from it (allocting if necessary) */
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/* If we have a valid arbfp_program_state pointer then we are all
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* set and don't need to generate a new program. */
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if (priv->arbfp_program_state)
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return TRUE;
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authority = priv->authority_cache;
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if (!(authority->backend_priv_set_mask & COGL_MATERIAL_BACKEND_ARBFP_MASK))
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{
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authority->backend_privs[COGL_MATERIAL_BACKEND_ARBFP] =
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g_slice_new0 (CoglMaterialBackendARBfpPrivate);
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authority->backend_priv_set_mask |= COGL_MATERIAL_BACKEND_ARBFP_MASK;
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/* It's implied that an authority for the current material would
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* also be its own authority... */
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authority_priv = authority->backend_privs[COGL_MATERIAL_BACKEND_ARBFP];
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authority_priv->authority_cache = authority;
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authority_priv->authority_cache_age = priv->authority_cache_age;
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}
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authority_priv = authority->backend_privs[COGL_MATERIAL_BACKEND_ARBFP];
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/*
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* Now we can start to prepare the authoritative arbfp state...
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/* If we don't have an associated arbfp program yet then find the
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* arbfp-authority (the oldest ancestor whose state will result in
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* the same program being generated as for this material).
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*
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* We always make sure to associate new programs with the
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* arbfp-authority to maximize the chance that other materials can
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* share it.
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*/
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if (!authority_priv->unit_state)
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authority_priv->unit_state = g_new0 (UnitState, n_layers);
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authority_priv->user_program = user_program;
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if (user_program == COGL_INVALID_HANDLE && authority_priv->gl_program == 0)
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authority = find_arbfp_authority (material, user_program);
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authority_priv = get_arbfp_priv (authority);
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if (!authority_priv)
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{
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int i;
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authority_priv = g_slice_new0 (CoglMaterialBackendARBfpPrivate);
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set_arbfp_priv (authority, authority_priv);
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}
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/* We reuse a single grow-only GString for ARBfp code-gen */
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g_string_set_size (ctx->arbfp_source_buffer, 0);
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authority_priv->source = ctx->arbfp_source_buffer;
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g_string_append (authority_priv->source,
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"!!ARBfp1.0\n"
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"TEMP output;\n"
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"TEMP tmp0, tmp1, tmp2, tmp3, tmp4;\n"
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"PARAM half = {.5, .5, .5, .5};\n"
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"PARAM one = {1, 1, 1, 1};\n"
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"PARAM two = {2, 2, 2, 2};\n"
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"PARAM minus_one = {-1, -1, -1, -1};\n");
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/* If we don't have an existing program associated with the
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* arbfp-authority then start generating code for a new program...
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*/
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if (!authority_priv->arbfp_program_state)
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{
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ArbfpProgramState *arbfp_program_state =
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arbfp_program_state_new (n_layers);
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authority_priv->arbfp_program_state = arbfp_program_state;
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for (i = 0; i < n_layers; i++)
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arbfp_program_state->user_program = user_program;
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if (user_program == COGL_INVALID_HANDLE)
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{
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authority_priv->unit_state[i].layer_index = -1;
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authority_priv->unit_state[i].sampled = FALSE;
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authority_priv->unit_state[i].dirty_combine_constant = FALSE;
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int i;
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/* We reuse a single grow-only GString for ARBfp code-gen */
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g_string_set_size (ctx->arbfp_source_buffer, 0);
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arbfp_program_state->source = ctx->arbfp_source_buffer;
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g_string_append (arbfp_program_state->source,
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"!!ARBfp1.0\n"
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"TEMP output;\n"
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"TEMP tmp0, tmp1, tmp2, tmp3, tmp4;\n"
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"PARAM half = {.5, .5, .5, .5};\n"
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"PARAM one = {1, 1, 1, 1};\n"
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"PARAM two = {2, 2, 2, 2};\n"
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"PARAM minus_one = {-1, -1, -1, -1};\n");
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for (i = 0; i < n_layers; i++)
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{
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arbfp_program_state->unit_state[i].sampled = FALSE;
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arbfp_program_state->unit_state[i].dirty_combine_constant = FALSE;
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}
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arbfp_program_state->next_constant_id = 0;
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}
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authority_priv->next_constant_id = 0;
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}
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/* Finally, if the material isn't actually its own arbfp-authority
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* then steal a reference to the program state associated with the
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* arbfp-authority... */
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if (authority != material)
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priv->arbfp_program_state =
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arbfp_program_state_ref (authority_priv->arbfp_program_state);
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return TRUE;
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}
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/* The "no_check" refers to the fact that this doesn't check that the
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* cache is still valid by looking at the age of the referenced
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* material. This should only be used where we *know* the cache has
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* already been checked. */
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static CoglMaterial *
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get_arbfp_authority_no_check (CoglMaterial *material)
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{
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CoglMaterialBackendARBfpPrivate *priv =
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material->backend_privs[COGL_MATERIAL_BACKEND_ARBFP];
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g_return_val_if_fail (priv != NULL, NULL);
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return priv->authority_cache;
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}
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/* Determines if we need to handle the RGB and A texture combining
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* separately or is the same function used for both channel masks and
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* with the same arguments...
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@ -544,13 +518,13 @@ gl_target_to_arbfp_string (GLenum gl_target)
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}
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static void
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setup_texture_source (CoglMaterialBackendARBfpPrivate *priv,
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setup_texture_source (ArbfpProgramState *arbfp_program_state,
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int unit_index,
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GLenum gl_target)
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{
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if (!priv->unit_state[unit_index].sampled)
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if (!arbfp_program_state->unit_state[unit_index].sampled)
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{
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g_string_append_printf (priv->source,
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g_string_append_printf (arbfp_program_state->source,
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"TEMP texel%d;\n"
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"TEX texel%d,fragment.texcoord[%d],"
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"texture[%d],%s;\n",
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@ -559,7 +533,7 @@ setup_texture_source (CoglMaterialBackendARBfpPrivate *priv,
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unit_index,
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unit_index,
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gl_target_to_arbfp_string (gl_target));
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priv->unit_state[unit_index].sampled = TRUE;
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arbfp_program_state->unit_state[unit_index].sampled = TRUE;
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}
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}
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@ -619,9 +593,7 @@ setup_arg (CoglMaterial *material,
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GLint op,
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CoglMaterialBackendARBfpArg *arg)
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{
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CoglMaterial *arbfp_authority = get_arbfp_authority_no_check (material);
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CoglMaterialBackendARBfpPrivate *priv =
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arbfp_authority->backend_privs[COGL_MATERIAL_BACKEND_ARBFP];
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ArbfpProgramState *arbfp_program_state = get_arbfp_program_state (material);
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static const char *tmp_name[3] = { "tmp0", "tmp1", "tmp2" };
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GLenum gl_target;
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CoglHandle texture;
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@ -634,15 +606,14 @@ setup_arg (CoglMaterial *material,
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arg->texture_unit = _cogl_material_layer_get_unit_index (layer);
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texture = _cogl_material_layer_get_texture (layer);
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cogl_texture_get_gl_texture (texture, NULL, &gl_target);
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setup_texture_source (priv, arg->texture_unit, gl_target);
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setup_texture_source (arbfp_program_state, arg->texture_unit, gl_target);
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break;
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case GL_CONSTANT:
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{
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int unit_index = _cogl_material_layer_get_unit_index (layer);
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UnitState *unit_state = &priv->unit_state[unit_index];
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UnitState *unit_state = &arbfp_program_state->unit_state[unit_index];
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unit_state->layer_index = layer->index;
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unit_state->constant_id = priv->next_constant_id++;
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unit_state->constant_id = arbfp_program_state->next_constant_id++;
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unit_state->dirty_combine_constant = TRUE;
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arg->type = COGL_MATERIAL_BACKEND_ARBFP_ARG_TYPE_CONSTANT;
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@ -667,7 +638,7 @@ setup_arg (CoglMaterial *material,
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arg->texture_unit = src - GL_TEXTURE0;
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texture = _cogl_material_layer_get_texture (layer);
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cogl_texture_get_gl_texture (texture, NULL, &gl_target);
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setup_texture_source (priv, arg->texture_unit, gl_target);
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setup_texture_source (arbfp_program_state, arg->texture_unit, gl_target);
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}
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||||
arg->swizzle = "";
|
||||
@ -677,11 +648,11 @@ setup_arg (CoglMaterial *material,
|
||||
case GL_SRC_COLOR:
|
||||
break;
|
||||
case GL_ONE_MINUS_SRC_COLOR:
|
||||
g_string_append_printf (priv->source,
|
||||
g_string_append_printf (arbfp_program_state->source,
|
||||
"SUB tmp%d, one, ",
|
||||
arg_index);
|
||||
append_arg (priv->source, arg);
|
||||
g_string_append_printf (priv->source, ";\n");
|
||||
append_arg (arbfp_program_state->source, arg);
|
||||
g_string_append_printf (arbfp_program_state->source, ";\n");
|
||||
arg->type = COGL_MATERIAL_BACKEND_ARBFP_ARG_TYPE_SIMPLE;
|
||||
arg->name = tmp_name[arg_index];
|
||||
arg->swizzle = "";
|
||||
@ -693,16 +664,16 @@ setup_arg (CoglMaterial *material,
|
||||
arg->swizzle = ".a";
|
||||
break;
|
||||
case GL_ONE_MINUS_SRC_ALPHA:
|
||||
g_string_append_printf (priv->source,
|
||||
g_string_append_printf (arbfp_program_state->source,
|
||||
"SUB tmp%d, one, ",
|
||||
arg_index);
|
||||
append_arg (priv->source, arg);
|
||||
append_arg (arbfp_program_state->source, arg);
|
||||
/* avoid a swizzle if we know RGB are going to be masked
|
||||
* in the end anyway */
|
||||
if (mask != COGL_BLEND_STRING_CHANNEL_MASK_ALPHA)
|
||||
g_string_append_printf (priv->source, ".a;\n");
|
||||
g_string_append_printf (arbfp_program_state->source, ".a;\n");
|
||||
else
|
||||
g_string_append_printf (priv->source, ";\n");
|
||||
g_string_append_printf (arbfp_program_state->source, ";\n");
|
||||
arg->type = COGL_MATERIAL_BACKEND_ARBFP_ARG_TYPE_SIMPLE;
|
||||
arg->name = tmp_name[arg_index];
|
||||
break;
|
||||
@ -747,9 +718,7 @@ append_function (CoglMaterial *material,
|
||||
CoglMaterialBackendARBfpArg *args,
|
||||
int n_args)
|
||||
{
|
||||
CoglMaterial *arbfp_authority = get_arbfp_authority_no_check (material);
|
||||
CoglMaterialBackendARBfpPrivate *priv =
|
||||
arbfp_authority->backend_privs[COGL_MATERIAL_BACKEND_ARBFP];
|
||||
ArbfpProgramState *arbfp_program_state = get_arbfp_program_state (material);
|
||||
const char *mask_name;
|
||||
|
||||
switch (mask)
|
||||
@ -771,33 +740,36 @@ append_function (CoglMaterial *material,
|
||||
switch (function)
|
||||
{
|
||||
case GL_ADD:
|
||||
g_string_append_printf (priv->source, "ADD_SAT output%s, ",
|
||||
g_string_append_printf (arbfp_program_state->source,
|
||||
"ADD_SAT output%s, ",
|
||||
mask_name);
|
||||
break;
|
||||
case GL_MODULATE:
|
||||
/* Note: no need to saturate since we can assume operands
|
||||
* have values in the range [0,1] */
|
||||
g_string_append_printf (priv->source, "MUL output%s, ",
|
||||
g_string_append_printf (arbfp_program_state->source, "MUL output%s, ",
|
||||
mask_name);
|
||||
break;
|
||||
case GL_REPLACE:
|
||||
/* Note: no need to saturate since we can assume operand
|
||||
* has a value in the range [0,1] */
|
||||
g_string_append_printf (priv->source, "MOV output%s, ",
|
||||
g_string_append_printf (arbfp_program_state->source, "MOV output%s, ",
|
||||
mask_name);
|
||||
break;
|
||||
case GL_SUBTRACT:
|
||||
g_string_append_printf (priv->source, "SUB_SAT output%s, ",
|
||||
g_string_append_printf (arbfp_program_state->source,
|
||||
"SUB_SAT output%s, ",
|
||||
mask_name);
|
||||
break;
|
||||
case GL_ADD_SIGNED:
|
||||
g_string_append_printf (priv->source, "ADD tmp3%s, ",
|
||||
g_string_append_printf (arbfp_program_state->source, "ADD tmp3%s, ",
|
||||
mask_name);
|
||||
append_arg (priv->source, &args[0]);
|
||||
g_string_append (priv->source, ", ");
|
||||
append_arg (priv->source, &args[1]);
|
||||
g_string_append (priv->source, ";\n");
|
||||
g_string_append_printf (priv->source, "SUB_SAT output%s, tmp3, half",
|
||||
append_arg (arbfp_program_state->source, &args[0]);
|
||||
g_string_append (arbfp_program_state->source, ", ");
|
||||
append_arg (arbfp_program_state->source, &args[1]);
|
||||
g_string_append (arbfp_program_state->source, ";\n");
|
||||
g_string_append_printf (arbfp_program_state->source,
|
||||
"SUB_SAT output%s, tmp3, half",
|
||||
mask_name);
|
||||
n_args = 0;
|
||||
break;
|
||||
@ -825,20 +797,20 @@ append_function (CoglMaterial *material,
|
||||
* output = 4 * DP3 (src0 - 0.5, src1 - 0.5)
|
||||
*/
|
||||
|
||||
g_string_append (priv->source, "MAD tmp3, two, ");
|
||||
append_arg (priv->source, &args[0]);
|
||||
g_string_append (priv->source, ", minus_one;\n");
|
||||
g_string_append (arbfp_program_state->source, "MAD tmp3, two, ");
|
||||
append_arg (arbfp_program_state->source, &args[0]);
|
||||
g_string_append (arbfp_program_state->source, ", minus_one;\n");
|
||||
|
||||
if (!backend_arbfp_args_equal (&args[0], &args[1]))
|
||||
{
|
||||
g_string_append (priv->source, "MAD tmp4, two, ");
|
||||
append_arg (priv->source, &args[1]);
|
||||
g_string_append (priv->source, ", minus_one;\n");
|
||||
g_string_append (arbfp_program_state->source, "MAD tmp4, two, ");
|
||||
append_arg (arbfp_program_state->source, &args[1]);
|
||||
g_string_append (arbfp_program_state->source, ", minus_one;\n");
|
||||
}
|
||||
else
|
||||
tmp4 = "tmp3";
|
||||
|
||||
g_string_append_printf (priv->source,
|
||||
g_string_append_printf (arbfp_program_state->source,
|
||||
"DP3_SAT output%s, tmp3, %s",
|
||||
mask_name, tmp4);
|
||||
n_args = 0;
|
||||
@ -850,31 +822,31 @@ append_function (CoglMaterial *material,
|
||||
|
||||
/* NB: GL_INTERPOLATE = arg0*arg2 + arg1*(1-arg2)
|
||||
* but LRP dst, a, b, c = b*a + c*(1-a) */
|
||||
g_string_append_printf (priv->source, "LRP output%s, ",
|
||||
g_string_append_printf (arbfp_program_state->source, "LRP output%s, ",
|
||||
mask_name);
|
||||
append_arg (priv->source, &args[2]);
|
||||
g_string_append (priv->source, ", ");
|
||||
append_arg (priv->source, &args[0]);
|
||||
g_string_append (priv->source, ", ");
|
||||
append_arg (priv->source, &args[1]);
|
||||
append_arg (arbfp_program_state->source, &args[2]);
|
||||
g_string_append (arbfp_program_state->source, ", ");
|
||||
append_arg (arbfp_program_state->source, &args[0]);
|
||||
g_string_append (arbfp_program_state->source, ", ");
|
||||
append_arg (arbfp_program_state->source, &args[1]);
|
||||
n_args = 0;
|
||||
break;
|
||||
default:
|
||||
g_error ("Unknown texture combine function %d", function);
|
||||
g_string_append_printf (priv->source, "MUL_SAT output%s, ",
|
||||
g_string_append_printf (arbfp_program_state->source, "MUL_SAT output%s, ",
|
||||
mask_name);
|
||||
n_args = 2;
|
||||
break;
|
||||
}
|
||||
|
||||
if (n_args > 0)
|
||||
append_arg (priv->source, &args[0]);
|
||||
append_arg (arbfp_program_state->source, &args[0]);
|
||||
if (n_args > 1)
|
||||
{
|
||||
g_string_append (priv->source, ", ");
|
||||
append_arg (priv->source, &args[1]);
|
||||
g_string_append (arbfp_program_state->source, ", ");
|
||||
append_arg (arbfp_program_state->source, &args[1]);
|
||||
}
|
||||
g_string_append (priv->source, ";\n");
|
||||
g_string_append (arbfp_program_state->source, ";\n");
|
||||
}
|
||||
|
||||
static void
|
||||
@ -914,9 +886,7 @@ _cogl_material_backend_arbfp_add_layer (CoglMaterial *material,
|
||||
CoglMaterialLayer *layer,
|
||||
unsigned long layers_difference)
|
||||
{
|
||||
CoglMaterial *arbfp_authority = get_arbfp_authority_no_check (material);
|
||||
CoglMaterialBackendARBfpPrivate *priv =
|
||||
arbfp_authority->backend_privs[COGL_MATERIAL_BACKEND_ARBFP];
|
||||
ArbfpProgramState *arbfp_program_state = get_arbfp_program_state (material);
|
||||
CoglMaterialLayer *combine_authority =
|
||||
_cogl_material_layer_get_authority (layer,
|
||||
COGL_MATERIAL_LAYER_STATE_COMBINE);
|
||||
@ -951,7 +921,7 @@ _cogl_material_backend_arbfp_add_layer (CoglMaterial *material,
|
||||
* We are careful to only saturate when writing to output.
|
||||
*/
|
||||
|
||||
if (!priv->source)
|
||||
if (!arbfp_program_state->source)
|
||||
return TRUE;
|
||||
|
||||
if (!need_texture_combine_separate (combine_authority))
|
||||
@ -997,14 +967,44 @@ _cogl_material_backend_arbfp_add_layer (CoglMaterial *material,
|
||||
gboolean
|
||||
_cogl_material_backend_arbfp_passthrough (CoglMaterial *material)
|
||||
{
|
||||
CoglMaterial *arbfp_authority = get_arbfp_authority_no_check (material);
|
||||
CoglMaterialBackendARBfpPrivate *priv =
|
||||
arbfp_authority->backend_privs[COGL_MATERIAL_BACKEND_ARBFP];
|
||||
ArbfpProgramState *arbfp_program_state = get_arbfp_program_state (material);
|
||||
|
||||
if (!priv->source)
|
||||
if (!arbfp_program_state->source)
|
||||
return TRUE;
|
||||
|
||||
g_string_append (priv->source, "MOV output, fragment.color.primary;\n");
|
||||
g_string_append (arbfp_program_state->source,
|
||||
"MOV output, fragment.color.primary;\n");
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
typedef struct _UpdateConstantsState
|
||||
{
|
||||
int unit;
|
||||
ArbfpProgramState *arbfp_program_state;
|
||||
} UpdateConstantsState;
|
||||
|
||||
static gboolean
|
||||
update_constants_cb (CoglMaterial *material,
|
||||
int layer_index,
|
||||
void *user_data)
|
||||
{
|
||||
UpdateConstantsState *state = user_data;
|
||||
ArbfpProgramState *arbfp_program_state = state->arbfp_program_state;
|
||||
UnitState *unit_state = &arbfp_program_state->unit_state[state->unit++];
|
||||
|
||||
_COGL_GET_CONTEXT (ctx, FALSE);
|
||||
|
||||
if (unit_state->dirty_combine_constant)
|
||||
{
|
||||
float constant[4];
|
||||
_cogl_material_get_layer_combine_constant (material,
|
||||
layer_index,
|
||||
constant);
|
||||
GE (glProgramLocalParameter4fv (GL_FRAGMENT_PROGRAM_ARB,
|
||||
unit_state->constant_id,
|
||||
constant));
|
||||
unit_state->dirty_combine_constant = FALSE;
|
||||
}
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
@ -1012,14 +1012,12 @@ static gboolean
|
||||
_cogl_material_backend_arbfp_end (CoglMaterial *material,
|
||||
unsigned long materials_difference)
|
||||
{
|
||||
CoglMaterial *arbfp_authority = get_arbfp_authority_no_check (material);
|
||||
CoglMaterialBackendARBfpPrivate *priv =
|
||||
arbfp_authority->backend_privs[COGL_MATERIAL_BACKEND_ARBFP];
|
||||
ArbfpProgramState *arbfp_program_state = get_arbfp_program_state (material);
|
||||
GLuint gl_program;
|
||||
|
||||
_COGL_GET_CONTEXT (ctx, FALSE);
|
||||
|
||||
if (priv->source)
|
||||
if (arbfp_program_state->source)
|
||||
{
|
||||
GLenum gl_error;
|
||||
COGL_STATIC_COUNTER (backend_arbfp_compile_counter,
|
||||
@ -1030,109 +1028,74 @@ _cogl_material_backend_arbfp_end (CoglMaterial *material,
|
||||
|
||||
COGL_COUNTER_INC (_cogl_uprof_context, backend_arbfp_compile_counter);
|
||||
|
||||
g_string_append (priv->source, "MOV result.color,output;\n");
|
||||
g_string_append (priv->source, "END\n");
|
||||
g_string_append (arbfp_program_state->source,
|
||||
"MOV result.color,output;\n");
|
||||
g_string_append (arbfp_program_state->source, "END\n");
|
||||
|
||||
if (G_UNLIKELY (cogl_debug_flags & COGL_DEBUG_SHOW_SOURCE))
|
||||
g_message ("material program:\n%s", priv->source->str);
|
||||
g_message ("material program:\n%s", arbfp_program_state->source->str);
|
||||
|
||||
GE (glGenPrograms (1, &priv->gl_program));
|
||||
GE (glGenPrograms (1, &arbfp_program_state->gl_program));
|
||||
|
||||
GE (glBindProgram (GL_FRAGMENT_PROGRAM_ARB, priv->gl_program));
|
||||
GE (glBindProgram (GL_FRAGMENT_PROGRAM_ARB,
|
||||
arbfp_program_state->gl_program));
|
||||
|
||||
while ((gl_error = glGetError ()) != GL_NO_ERROR)
|
||||
;
|
||||
glProgramString (GL_FRAGMENT_PROGRAM_ARB,
|
||||
GL_PROGRAM_FORMAT_ASCII_ARB,
|
||||
priv->source->len,
|
||||
priv->source->str);
|
||||
arbfp_program_state->source->len,
|
||||
arbfp_program_state->source->str);
|
||||
if (glGetError () != GL_NO_ERROR)
|
||||
{
|
||||
g_warning ("\n%s\n%s",
|
||||
priv->source->str,
|
||||
arbfp_program_state->source->str,
|
||||
glGetString (GL_PROGRAM_ERROR_STRING_ARB));
|
||||
}
|
||||
|
||||
priv->source = NULL;
|
||||
arbfp_program_state->source = NULL;
|
||||
}
|
||||
|
||||
if (priv->user_program != COGL_INVALID_HANDLE)
|
||||
if (arbfp_program_state->user_program != COGL_INVALID_HANDLE)
|
||||
{
|
||||
CoglProgram *program = (CoglProgram *)priv->user_program;
|
||||
CoglProgram *program = (CoglProgram *)arbfp_program_state->user_program;
|
||||
gl_program = program->gl_handle;
|
||||
}
|
||||
else
|
||||
gl_program = priv->gl_program;
|
||||
gl_program = arbfp_program_state->gl_program;
|
||||
|
||||
GE (glBindProgram (GL_FRAGMENT_PROGRAM_ARB, gl_program));
|
||||
_cogl_use_program (COGL_INVALID_HANDLE, COGL_MATERIAL_PROGRAM_TYPE_ARBFP);
|
||||
|
||||
if (priv->user_program == COGL_INVALID_HANDLE)
|
||||
if (arbfp_program_state->user_program == COGL_INVALID_HANDLE)
|
||||
{
|
||||
int n_layers = cogl_material_get_n_layers (material);
|
||||
int i;
|
||||
for (i = 0; i < n_layers; i++)
|
||||
{
|
||||
UnitState *unit_state = &priv->unit_state[i];
|
||||
if (unit_state->dirty_combine_constant)
|
||||
{
|
||||
float constant[4];
|
||||
int layer_index = unit_state->layer_index;
|
||||
_cogl_material_get_layer_combine_constant (material,
|
||||
layer_index,
|
||||
constant);
|
||||
GE (glProgramLocalParameter4fv (GL_FRAGMENT_PROGRAM_ARB,
|
||||
unit_state->constant_id,
|
||||
constant));
|
||||
unit_state->dirty_combine_constant = FALSE;
|
||||
}
|
||||
}
|
||||
UpdateConstantsState state;
|
||||
state.unit = 0;
|
||||
state.arbfp_program_state = arbfp_program_state;
|
||||
cogl_material_foreach_layer (material,
|
||||
update_constants_cb,
|
||||
&state);
|
||||
}
|
||||
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
static void
|
||||
dirty_fragment_state (CoglMaterial *material,
|
||||
CoglMaterialBackendARBfpPrivate *priv)
|
||||
{
|
||||
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
|
||||
|
||||
g_return_if_fail (material->backend_priv_set_mask &
|
||||
COGL_MATERIAL_BACKEND_ARBFP_MASK);
|
||||
|
||||
priv = material->backend_privs[COGL_MATERIAL_BACKEND_ARBFP];
|
||||
|
||||
/* If we are currently deferring to another material as
|
||||
* the arbfp authority then break our link with it, otherwise
|
||||
* delete any authoritative state. */
|
||||
if (priv->authority_cache != material)
|
||||
break_arbfp_authority_link (material);
|
||||
else
|
||||
free_authoritative_state (priv);
|
||||
}
|
||||
|
||||
static CoglMaterialBackendARBfpPrivate *
|
||||
get_arbfp_authority_priv (CoglMaterial *material)
|
||||
dirty_arbfp_program_state (CoglMaterial *material)
|
||||
{
|
||||
CoglMaterialBackendARBfpPrivate *priv;
|
||||
CoglMaterial *authority;
|
||||
|
||||
if (!(material->backend_priv_set_mask & COGL_MATERIAL_BACKEND_ARBFP_MASK))
|
||||
return NULL;
|
||||
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
|
||||
|
||||
priv = material->backend_privs[COGL_MATERIAL_BACKEND_ARBFP];
|
||||
authority = priv->authority_cache;
|
||||
if (!authority)
|
||||
return NULL;
|
||||
priv = get_arbfp_priv (material);
|
||||
if (!priv)
|
||||
return;
|
||||
|
||||
if (_cogl_material_get_age (authority) != priv->authority_cache_age)
|
||||
if (priv->arbfp_program_state)
|
||||
{
|
||||
break_arbfp_authority_link (material);
|
||||
return NULL;
|
||||
arbfp_program_state_unref (priv->arbfp_program_state);
|
||||
priv->arbfp_program_state = NULL;
|
||||
}
|
||||
|
||||
return authority->backend_privs[COGL_MATERIAL_BACKEND_ARBFP];
|
||||
}
|
||||
|
||||
static void
|
||||
@ -1141,65 +1104,15 @@ _cogl_material_backend_arbfp_material_pre_change_notify (
|
||||
CoglMaterialState change,
|
||||
const CoglColor *new_color)
|
||||
{
|
||||
CoglMaterialBackendARBfpPrivate *priv;
|
||||
static const unsigned long fragment_op_changes =
|
||||
COGL_MATERIAL_STATE_LAYERS |
|
||||
COGL_MATERIAL_STATE_USER_SHADER;
|
||||
/* TODO: COGL_MATERIAL_STATE_FOG */
|
||||
|
||||
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
|
||||
|
||||
if (!(change & fragment_op_changes))
|
||||
return;
|
||||
|
||||
priv = get_arbfp_authority_priv (material);
|
||||
if (!priv)
|
||||
return;
|
||||
|
||||
dirty_fragment_state (material, priv);
|
||||
}
|
||||
|
||||
static gboolean
|
||||
break_arbfp_authority_link_cb (CoglMaterialNode *node,
|
||||
void *user_data)
|
||||
{
|
||||
CoglMaterial *material = COGL_MATERIAL (node);
|
||||
break_arbfp_authority_link (material);
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
static void
|
||||
_cogl_material_backend_arbfp_material_set_parent_notify (
|
||||
CoglMaterial *material)
|
||||
{
|
||||
/* There are two aspects to a material being reparented that we need
|
||||
* to consider:
|
||||
*
|
||||
* 1) the material could be an arbfp authority so we need to make
|
||||
* sure that other materials defering to it for its arbfp state
|
||||
* should break their link.
|
||||
*
|
||||
* 2) the material could be defering to another material for its
|
||||
* arbfp state but the authority is no longer an ancestor, so we
|
||||
* also need to break the link. If the material that's be
|
||||
* re-parented has children then they may all also be affected in
|
||||
* the same way.
|
||||
*
|
||||
* 1 should be handle by the material-age mechanism. I.e. when
|
||||
* we next come to reference the cache we will see that the
|
||||
* authority material has changed so we will re-evaluate what
|
||||
* other material we can defer to as the arbfp authority.
|
||||
* XXX: Actually the age is of the material that owns the cache
|
||||
* not of the material referenced in the cache! Double check how
|
||||
* this case is handled!!
|
||||
*
|
||||
* 2 can be dealt with now by NULLing any authority cache associated
|
||||
* with the material, and doing the same for any children.
|
||||
*/
|
||||
break_arbfp_authority_link (material);
|
||||
_cogl_material_node_foreach_child (COGL_MATERIAL_NODE (material),
|
||||
break_arbfp_authority_link_cb,
|
||||
NULL);
|
||||
dirty_arbfp_program_state (material);
|
||||
}
|
||||
|
||||
/* NB: layers are considered immutable once they have any dependants
|
||||
@ -1216,25 +1129,27 @@ _cogl_material_backend_arbfp_layer_pre_change_notify (
|
||||
CoglMaterialLayer *layer,
|
||||
CoglMaterialLayerState change)
|
||||
{
|
||||
CoglMaterialBackendARBfpPrivate *priv = get_arbfp_authority_priv (owner);
|
||||
CoglMaterialBackendARBfpPrivate *priv;
|
||||
static const unsigned long not_fragment_op_changes =
|
||||
COGL_MATERIAL_LAYER_STATE_COMBINE_CONSTANT |
|
||||
COGL_MATERIAL_LAYER_STATE_TEXTURE;
|
||||
|
||||
priv = get_arbfp_authority_priv (owner);
|
||||
priv = get_arbfp_priv (owner);
|
||||
if (!priv)
|
||||
return;
|
||||
|
||||
if (!(change & not_fragment_op_changes))
|
||||
{
|
||||
dirty_fragment_state (owner, priv);
|
||||
dirty_arbfp_program_state (owner);
|
||||
return;
|
||||
}
|
||||
|
||||
if (change & COGL_MATERIAL_LAYER_STATE_COMBINE_CONSTANT)
|
||||
{
|
||||
ArbfpProgramState *arbfp_program_state =
|
||||
get_arbfp_program_state (owner);
|
||||
int unit_index = _cogl_material_layer_get_unit_index (layer);
|
||||
priv->unit_state[unit_index].dirty_combine_constant = TRUE;
|
||||
arbfp_program_state->unit_state[unit_index].dirty_combine_constant = TRUE;
|
||||
}
|
||||
|
||||
/* TODO: we could be saving snippets of texture combine code along
|
||||
@ -1246,16 +1161,13 @@ _cogl_material_backend_arbfp_layer_pre_change_notify (
|
||||
static void
|
||||
_cogl_material_backend_arbfp_free_priv (CoglMaterial *material)
|
||||
{
|
||||
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
|
||||
|
||||
if (material->backend_priv_set_mask & COGL_MATERIAL_BACKEND_ARBFP_MASK)
|
||||
CoglMaterialBackendARBfpPrivate *priv = get_arbfp_priv (material);
|
||||
if (priv)
|
||||
{
|
||||
CoglMaterialBackendARBfpPrivate *priv =
|
||||
material->backend_privs[COGL_MATERIAL_BACKEND_ARBFP];
|
||||
|
||||
free_authoritative_state (priv);
|
||||
if (priv->arbfp_program_state)
|
||||
arbfp_program_state_unref (priv->arbfp_program_state);
|
||||
g_slice_free (CoglMaterialBackendARBfpPrivate, priv);
|
||||
material->backend_priv_set_mask &= ~COGL_MATERIAL_BACKEND_ARBFP_MASK;
|
||||
set_arbfp_priv (material, NULL);
|
||||
}
|
||||
}
|
||||
|
||||
@ -1267,7 +1179,7 @@ const CoglMaterialBackend _cogl_material_arbfp_backend =
|
||||
_cogl_material_backend_arbfp_passthrough,
|
||||
_cogl_material_backend_arbfp_end,
|
||||
_cogl_material_backend_arbfp_material_pre_change_notify,
|
||||
_cogl_material_backend_arbfp_material_set_parent_notify,
|
||||
NULL,
|
||||
_cogl_material_backend_arbfp_layer_pre_change_notify,
|
||||
_cogl_material_backend_arbfp_free_priv,
|
||||
NULL
|
||||
|
||||
Loading…
Reference in New Issue
Block a user