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[material] avoid flushing the journal when just changing the color

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Whenever we modify a material we call _cogl_material_pre_change_notify which
checks to see if the material is referenced by the journal and if so flushes
if before we modify the material.

Since the journal logs material colors directly into a vertex array (to
avoid us repeatedly calling glColor) then we know we never need to flush
the journal when material colors change.
This commit is contained in:
Robert Bragg 2009-06-17 23:31:11 +01:00
parent f2f4f5f06f
commit 3369c5138b
1 changed files with 52 additions and 28 deletions
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80
common/cogl-material.c
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@ -131,22 +131,24 @@ _cogl_material_free (CoglMaterial *material)
g_free (material);
}
static void
handle_automatic_blend_enable (CoglMaterial *material)
static gboolean
_cogl_material_needs_blending_enabled (CoglMaterial *material,
GLubyte *override_color)
{
GList *tmp;
/* XXX: If we expose manual control over ENABLE_BLEND, we'll add
* a flag to know when it's user configured, so we don't trash it */
material->flags &= ~COGL_MATERIAL_FLAG_ENABLE_BLEND;
/* XXX: Uncomment this to disable all blending */
#if 0
return;
#endif
if ((override_color && override_color[3] != 0xff) ||
material->unlit[3] != 0xff)
return TRUE;
for (tmp = material->layers; tmp != NULL; tmp = tmp->next)
{
CoglMaterialLayer *layer = tmp->data;
@ -157,10 +159,18 @@ handle_automatic_blend_enable (CoglMaterial *material)
continue;
if (cogl_texture_get_format (layer->texture) & COGL_A_BIT)
material->flags |= COGL_MATERIAL_FLAG_ENABLE_BLEND;
return TRUE;
}
if (material->unlit[3] != 0xff)
return FALSE;
}
static void
handle_automatic_blend_enable (CoglMaterial *material)
{
material->flags &= ~COGL_MATERIAL_FLAG_ENABLE_BLEND;
if (_cogl_material_needs_blending_enabled (material, NULL))
material->flags |= COGL_MATERIAL_FLAG_ENABLE_BLEND;
}
@ -168,8 +178,23 @@ handle_automatic_blend_enable (CoglMaterial *material)
* state of this material we need to flush the journal before we can
* modify it... */
static void
_cogl_material_pre_change_notify (CoglMaterial *material)
_cogl_material_pre_change_notify (CoglMaterial *material,
gboolean only_color_change,
GLubyte *new_color)
{
/* XXX: We don't usually need to flush the journal just due to color changes
* since material colors are logged in the journals vertex buffer. The
* exception is when the change in color enables or disables the need for
* blending. */
if (only_color_change)
{
gboolean will_need_blending =
_cogl_material_needs_blending_enabled (material, new_color);
if (will_need_blending ==
(material->flags & COGL_MATERIAL_FLAG_ENABLE_BLEND) ? TRUE : FALSE)
return;
}
if (material->journal_ref_count)
_cogl_journal_flush ();
}
@ -219,7 +244,7 @@ cogl_material_set_color (CoglHandle handle,
return;
/* possibly flush primitives referencing the current state... */
_cogl_material_pre_change_notify (material);
_cogl_material_pre_change_notify (material, TRUE, unlit);
memcpy (material->unlit, unlit, sizeof (unlit));
@ -286,7 +311,7 @@ cogl_material_set_ambient (CoglHandle handle,
material = _cogl_material_pointer_from_handle (handle);
/* possibly flush primitives referencing the current state... */
_cogl_material_pre_change_notify (material);
_cogl_material_pre_change_notify (material, FALSE, NULL);
ambient = material->ambient;
ambient[0] = cogl_color_get_red_float (ambient_color);
@ -326,7 +351,7 @@ cogl_material_set_diffuse (CoglHandle handle,
material = _cogl_material_pointer_from_handle (handle);
/* possibly flush primitives referencing the current state... */
_cogl_material_pre_change_notify (material);
_cogl_material_pre_change_notify (material, FALSE, NULL);
diffuse = material->diffuse;
diffuse[0] = cogl_color_get_red_float (diffuse_color);
@ -374,7 +399,7 @@ cogl_material_set_specular (CoglHandle handle,
material = _cogl_material_pointer_from_handle (handle);
/* possibly flush primitives referencing the current state... */
_cogl_material_pre_change_notify (material);
_cogl_material_pre_change_notify (material, FALSE, NULL);
specular = material->specular;
specular[0] = cogl_color_get_red_float (specular_color);
@ -412,7 +437,7 @@ cogl_material_set_shininess (CoglHandle handle,
material = _cogl_material_pointer_from_handle (handle);
/* possibly flush primitives referencing the current state... */
_cogl_material_pre_change_notify (material);
_cogl_material_pre_change_notify (material, FALSE, NULL);
material->shininess = (GLfloat)shininess * 128.0;
@ -448,7 +473,7 @@ cogl_material_set_emission (CoglHandle handle,
material = _cogl_material_pointer_from_handle (handle);
/* possibly flush primitives referencing the current state... */
_cogl_material_pre_change_notify (material);
_cogl_material_pre_change_notify (material, FALSE, NULL);
emission = material->emission;
emission[0] = cogl_color_get_red_float (emission_color);
@ -471,7 +496,7 @@ cogl_material_set_alpha_test_function (CoglHandle handle,
material = _cogl_material_pointer_from_handle (handle);
/* possibly flush primitives referencing the current state... */
_cogl_material_pre_change_notify (material);
_cogl_material_pre_change_notify (material, FALSE, NULL);
material->alpha_func = alpha_func;
material->alpha_func_reference = (GLfloat)alpha_reference;
@ -621,7 +646,7 @@ cogl_material_set_blend (CoglHandle handle,
}
/* possibly flush primitives referencing the current state... */
_cogl_material_pre_change_notify (material);
_cogl_material_pre_change_notify (material, FALSE, NULL);
#ifndef HAVE_COGL_GLES
setup_blend_state (rgb,
@ -657,7 +682,7 @@ cogl_material_set_blend_constant (CoglHandle handle,
material = _cogl_material_pointer_from_handle (handle);
/* possibly flush primitives referencing the current state... */
_cogl_material_pre_change_notify (material);
_cogl_material_pre_change_notify (material, FALSE, NULL);
constant = material->blend_constant;
constant[0] = cogl_color_get_red_float (constant_color);
@ -699,6 +724,9 @@ _cogl_material_get_layer (CoglMaterial *material,
if (!create_if_not_found)
return NULL;
/* possibly flush primitives referencing the current state... */
_cogl_material_pre_change_notify (material, FALSE, NULL);
layer = g_new0 (CoglMaterialLayer, 1);
layer_handle = _cogl_material_layer_handle_new (layer);
@ -744,16 +772,13 @@ cogl_material_set_layer (CoglHandle material_handle,
material = _cogl_material_pointer_from_handle (material_handle);
/* possibly flush primitives referencing the current state... */
_cogl_material_pre_change_notify (material);
layer = _cogl_material_get_layer (material_handle, layer_index, TRUE);
if (texture_handle == layer->texture)
return;
/* possibly flush primitives referencing the current state... */
_cogl_material_pre_change_notify (material);
_cogl_material_pre_change_notify (material, FALSE, NULL);
material->n_layers = g_list_length (material->layers);
if (material->n_layers >= CGL_MAX_COMBINED_TEXTURE_IMAGE_UNITS)
@ -918,7 +943,7 @@ cogl_material_set_layer_combine (CoglHandle handle,
}
/* possibly flush primitives referencing the current state... */
_cogl_material_pre_change_notify (material);
_cogl_material_pre_change_notify (material, FALSE, NULL);
setup_texture_combine_state (rgb,
&layer->texture_combine_rgb_func,
@ -951,7 +976,7 @@ cogl_material_set_layer_combine_constant (CoglHandle handle,
layer = _cogl_material_get_layer (material, layer_index, TRUE);
/* possibly flush primitives referencing the current state... */
_cogl_material_pre_change_notify (material);
_cogl_material_pre_change_notify (material, FALSE, NULL);
constant = layer->texture_combine_constant;
constant[0] = cogl_color_get_red_float (constant_color);
@ -977,7 +1002,7 @@ cogl_material_set_layer_matrix (CoglHandle material_handle,
layer = _cogl_material_get_layer (material, layer_index, TRUE);
/* possibly flush primitives referencing the current state... */
_cogl_material_pre_change_notify (material);
_cogl_material_pre_change_notify (material, FALSE, NULL);
layer->matrix = *matrix;
@ -1007,7 +1032,7 @@ cogl_material_remove_layer (CoglHandle material_handle,
material = _cogl_material_pointer_from_handle (material_handle);
/* possibly flush primitives referencing the current state... */
_cogl_material_pre_change_notify (material);
_cogl_material_pre_change_notify (material, FALSE, NULL);
for (tmp = material->layers; tmp != NULL; tmp = tmp->next)
{
@ -1811,11 +1836,10 @@ cogl_material_set_layer_filters (CoglHandle handle,
g_return_if_fail (cogl_is_material (handle));
material = _cogl_material_pointer_from_handle (handle);
layer = _cogl_material_get_layer (material, layer_index, TRUE);
/* possibly flush primitives referencing the current state... */
_cogl_material_pre_change_notify (material);
layer = _cogl_material_get_layer (material, layer_index, TRUE);
_cogl_material_pre_change_notify (material, FALSE, NULL);
layer->min_filter = min_filter;
layer->mag_filter = mag_filter;