brl/mutter
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

cogl-pipeline: Move texture enabling/disabling to fixed fragend

Browse Source 
Previously enabling and disabling textures was done whatever the
backend in cogl-pipeline-opengl. However enabling and disabling
texture targets only has any meaning if no fragment shaders are being
used so this patch moves the code to cogl-pipeline-fragend-fixed.

The GLES2 wrapper has also been changed to ignore enabledness when
deciding whether to update texture coordinate attribute pointers.
This commit is contained in:
Neil Roberts
2010-11-30 12:48:27 +00:00
parent 0098dc7acc
commit 6b7139b008
7 changed files with 154 additions and 141 deletions
Download Patch File Download Diff File Expand all files Collapse all files

95
cogl/cogl-pipeline-opengl.c
View File

@ -80,9 +80,9 @@ static void
texture_unit_init (CoglTextureUnit *unit, int index_)
{
unit->index = index_;
unit->enabled = FALSE;
unit->current_gl_target = 0;
unit->enabled_gl_target = 0;
unit->gl_texture = 0;
unit->gl_target = 0;
unit->is_foreign = FALSE;
unit->dirty_gl_texture = FALSE;
unit->matrix_stack = _cogl_matrix_stack_new ();
@ -150,23 +150,6 @@ _cogl_set_active_texture_unit (int unit_index)
}
}
void
_cogl_disable_texture_unit (int unit_index)
{
CoglTextureUnit *unit;
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
unit = &g_array_index (ctx->texture_units, CoglTextureUnit, unit_index);
if (unit->enabled)
{
_cogl_set_active_texture_unit (unit_index);
GE (glDisable (unit->current_gl_target));
unit->enabled = FALSE;
}
}
/* Note: _cogl_bind_gl_texture_transient conceptually has slightly
* different semantics to OpenGL's glBindTexture because Cogl never
* cares about tracking multiple textures bound to different targets
@ -235,6 +218,7 @@ _cogl_delete_gl_texture (GLuint gl_texture)
if (unit->gl_texture == gl_texture)
{
unit->gl_texture = 0;
unit->gl_target = 0;
unit->dirty_gl_texture = FALSE;
}
}
@ -682,44 +666,17 @@ flush_layers_common_gl_state_cb (CoglPipelineLayer *layer, void *user_data)
else
GE (glBindTexture (gl_target, gl_texture));
unit->gl_texture = gl_texture;
unit->gl_target = gl_target;
}
unit->is_foreign = _cogl_texture_is_foreign (texture);
/* Disable the previous target if it was different and it's
* still enabled */
if (unit->enabled && unit->current_gl_target != gl_target)
GE (glDisable (unit->current_gl_target));
if (!G_UNLIKELY (cogl_debug_flags & COGL_DEBUG_DISABLE_TEXTURING) &&
(!unit->enabled || unit->current_gl_target != gl_target))
{
GE (glEnable (gl_target));
unit->enabled = TRUE;
unit->current_gl_target = gl_target;
}
/* The texture_storage_changed boolean indicates if the
* CoglTexture's underlying GL texture storage has changed since
* it was flushed to the texture unit. We've just flushed the
* latest state so we can reset this. */
unit->texture_storage_changed = FALSE;
}
else
{
/* Even though there may be no difference between the last flushed
* texture state and the current layers texture state it may be that the
* texture unit has been disabled for some time so we need to assert that
* it's enabled now.
*/
if (!G_UNLIKELY (cogl_debug_flags & COGL_DEBUG_DISABLE_TEXTURING) &&
!unit->enabled)
{
_cogl_set_active_texture_unit (unit_index);
GE (glEnable (unit->current_gl_target));
unit->enabled = TRUE;
}
}
if (layers_difference & COGL_PIPELINE_LAYER_STATE_USER_MATRIX)
{
@ -781,10 +738,6 @@ _cogl_pipeline_flush_common_gl_state (CoglPipeline *pipeline,
_cogl_pipeline_foreach_layer_internal (pipeline,
flush_layers_common_gl_state_cb,
&state);
/* Disable additional texture units that may have previously been in use.. */
for (; state.i < ctx->texture_units->len; state.i++)
_cogl_disable_texture_unit (state.i);
}
/* Re-assert the layer's wrap modes on the given CoglTexture.
@ -859,19 +812,20 @@ foreach_texture_unit_update_filter_and_wrap_modes (void)
CoglTextureUnit *unit =
&g_array_index (ctx->texture_units, CoglTextureUnit, i);
if (!unit->enabled)
break;
if (unit->layer)
{
CoglHandle texture = _cogl_pipeline_layer_get_texture (unit->layer);
CoglPipelineFilter min;
CoglPipelineFilter mag;
_cogl_pipeline_layer_get_filters (unit->layer, &min, &mag);
_cogl_texture_set_filters (texture, min, mag);
if (texture != COGL_INVALID_HANDLE)
{
CoglPipelineFilter min;
CoglPipelineFilter mag;
_cogl_pipeline_layer_forward_wrap_modes (unit->layer, texture);
_cogl_pipeline_layer_get_filters (unit->layer, &min, &mag);
_cogl_texture_set_filters (texture, min, mag);
_cogl_pipeline_layer_forward_wrap_modes (unit->layer, texture);
}
}
}
}
@ -933,27 +887,9 @@ fragend_add_layer_cb (CoglPipelineLayer *layer,
const CoglPipelineFragend *fragend = state->fragend;
CoglPipeline *pipeline = state->pipeline;
int unit_index = _cogl_pipeline_layer_get_unit_index (layer);
CoglTextureUnit *unit = _cogl_get_texture_unit (unit_index);
_COGL_GET_CONTEXT (ctx, FALSE);
/* NB: We don't support the random disabling of texture
* units, so as soon as we hit a disabled unit we know all
* subsequent units are also disabled */
if (!unit->enabled)
return FALSE;
if (G_UNLIKELY (unit_index >= fragend->get_max_texture_units ()))
{
int j;
for (j = unit_index; j < ctx->texture_units->len; j++)
_cogl_disable_texture_unit (j);
/* TODO: although this isn't considered an error that
* warrants falling back to a different backend we
* should print a warning here. */
return FALSE;
}
/* Either generate per layer code snippets or setup the
* fixed function glTexEnv for each layer... */
if (G_LIKELY (fragend->add_layer (pipeline,
@ -1086,7 +1022,6 @@ _cogl_pipeline_flush_gl_state (CoglPipeline *pipeline,
* 2) then foreach layer:
* determine gl_target/gl_texture
* bind texture
* enable/disable target
* flush user matrix
*
* Note: After _cogl_pipeline_flush_common_gl_state you can expect
@ -1190,10 +1125,10 @@ done:
* _cogl_bind_gl_texture_transient)
*/
unit1 = _cogl_get_texture_unit (1);
if (unit1->enabled && unit1->dirty_gl_texture)
if (cogl_pipeline_get_n_layers (pipeline) > 1 && unit1->dirty_gl_texture)
{
_cogl_set_active_texture_unit (1);
GE (glBindTexture (unit1->current_gl_target, unit1->gl_texture));
GE (glBindTexture (unit1->gl_target, unit1->gl_texture));
unit1->dirty_gl_texture = FALSE;
}