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

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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
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7
cogl/cogl-pipeline-fragend-arbfp.c
View File

@ -173,12 +173,6 @@ arbfp_program_state_unref (ArbfpProgramState *state)
}
}
static int
_cogl_pipeline_fragend_arbfp_get_max_texture_units (void)
{
return _cogl_get_max_texture_image_units ();
}
static CoglPipelineFragendARBfpPrivate *
get_arbfp_priv (CoglPipeline *pipeline)
{
@ -1118,7 +1112,6 @@ _cogl_pipeline_fragend_arbfp_free_priv (CoglPipeline *pipeline)
const CoglPipelineFragend _cogl_pipeline_arbfp_fragend =
{
_cogl_pipeline_fragend_arbfp_get_max_texture_units,
_cogl_pipeline_fragend_arbfp_start,
_cogl_pipeline_fragend_arbfp_add_layer,
_cogl_pipeline_fragend_arbfp_passthrough,

107
cogl/cogl-pipeline-fragend-fixed.c
View File

@ -49,8 +49,25 @@
const CoglPipelineFragend _cogl_pipeline_fixed_fragend;
static 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_gl_target)
{
_cogl_set_active_texture_unit (unit_index);
GE (glDisable (unit->enabled_gl_target));
unit->enabled_gl_target = 0;
}
}
static int
_cogl_pipeline_fragend_fixed_get_max_texture_units (void)
get_max_texture_units (void)
{
_COGL_GET_CONTEXT (ctx, 0);
@ -106,6 +123,68 @@ _cogl_pipeline_fragend_fixed_add_layer (CoglPipeline *pipeline,
*/
_cogl_set_active_texture_unit (unit_index);
if (G_UNLIKELY (unit_index >= get_max_texture_units ()))
{
_cogl_disable_texture_unit (unit_index);
/* TODO: although this isn't considered an error that
* warrants falling back to a different backend we
* should print a warning here. */
return TRUE;
}
/* Handle enabling or disabling the right texture target */
if (layers_difference & COGL_PIPELINE_LAYER_STATE_TEXTURE)
{
CoglPipelineLayer *authority =
_cogl_pipeline_layer_get_authority (layer,
COGL_PIPELINE_LAYER_STATE_TEXTURE);
CoglHandle texture;
GLuint gl_texture;
GLenum gl_target;
texture = (authority->texture == COGL_INVALID_HANDLE ?
ctx->default_gl_texture_2d_tex :
authority->texture);
cogl_texture_get_gl_texture (texture,
&gl_texture,
&gl_target);
_cogl_set_active_texture_unit (unit_index);
/* The common GL code handles binding the right texture so we
just need to handle enabling and disabling it */
if (unit->enabled_gl_target != gl_target)
{
/* Disable the previous target if it's still enabled */
if (unit->enabled_gl_target)
GE (glDisable (unit->enabled_gl_target));
/* Enable the new target */
if (!G_UNLIKELY (cogl_debug_flags & COGL_DEBUG_DISABLE_TEXTURING))
{
GE (glEnable (gl_target));
unit->enabled_gl_target = gl_target;
}
}
}
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_gl_target == 0)
{
_cogl_set_active_texture_unit (unit_index);
GE (glEnable (unit->gl_target));
unit->enabled_gl_target = unit->gl_target;
}
}
if (layers_difference & COGL_PIPELINE_LAYER_STATE_COMBINE)
{
CoglPipelineLayer *authority =
@ -188,10 +267,35 @@ _cogl_pipeline_fragend_fixed_add_layer (CoglPipeline *pipeline,
return TRUE;
}
static gboolean
get_highest_unit_index_cb (CoglPipelineLayer *layer,
void *user_data)
{
int unit_index = _cogl_pipeline_layer_get_unit_index (layer);
int *highest_index = user_data;
*highest_index = unit_index;
return TRUE;
}
static gboolean
_cogl_pipeline_fragend_fixed_end (CoglPipeline *pipeline,
unsigned long pipelines_difference)
{
int highest_unit_index = -1;
int i;
_COGL_GET_CONTEXT (ctx, FALSE);
_cogl_pipeline_foreach_layer_internal (pipeline,
get_highest_unit_index_cb,
&highest_unit_index);
/* Disable additional texture units that may have previously been in use.. */
for (i = highest_unit_index + 1; i < ctx->texture_units->len; i++)
_cogl_disable_texture_unit (i);
if (pipelines_difference & COGL_PIPELINE_STATE_FOG)
{
CoglPipeline *authority =
@ -245,7 +349,6 @@ _cogl_pipeline_fragend_fixed_end (CoglPipeline *pipeline,
const CoglPipelineFragend _cogl_pipeline_fixed_fragend =
{
_cogl_pipeline_fragend_fixed_get_max_texture_units,
_cogl_pipeline_fragend_fixed_start,
_cogl_pipeline_fragend_fixed_add_layer,
NULL, /* passthrough */

7
cogl/cogl-pipeline-fragend-glsl.c
View File

@ -138,12 +138,6 @@ typedef struct _CoglPipelineFragendGlslPrivate
const CoglPipelineFragend _cogl_pipeline_glsl_backend;
static int
_cogl_pipeline_fragend_glsl_get_max_texture_units (void)
{
return _cogl_get_max_texture_image_units ();
}
static GlslProgramState *
glsl_program_state_new (int n_layers)
{
@ -1248,7 +1242,6 @@ _cogl_pipeline_fragend_glsl_free_priv (CoglPipeline *pipeline)
const CoglPipelineFragend _cogl_pipeline_glsl_fragend =
{
_cogl_pipeline_fragend_glsl_get_max_texture_units,
_cogl_pipeline_fragend_glsl_start,
_cogl_pipeline_fragend_glsl_add_layer,
_cogl_pipeline_fragend_glsl_passthrough,

16
cogl/cogl-pipeline-opengl-private.h
View File

@ -54,17 +54,18 @@ typedef struct _CoglTextureUnit
* glActiveTexture () */
int index;
/* Whether or not the corresponding gl_target has been glEnabled */
gboolean enabled;
/* The GL target currently glEnabled or the target last enabled
* if .enabled == FALSE */
GLenum current_gl_target;
/* The GL target currently glEnabled or 0 if nothing is
* enabled. This is only used by the fixed pipeline fragend */
GLenum enabled_gl_target;
/* The raw GL texture object name for which we called glBindTexture when
* we flushed the last layer. (NB: The CoglTexture associated
* with a layer may represent more than one GL texture) */
GLuint gl_texture;
/* The target of the GL texture object. This is just used so that we
* can quickly determine the intended target to flush when
* dirty_gl_texture == TRUE */
GLenum gl_target;
/* Foreign textures are those not created or deleted by Cogl. If we ever
* call glBindTexture for a foreign texture then the next time we are
@ -131,9 +132,6 @@ _cogl_get_texture_unit (int index_);
void
_cogl_destroy_texture_units (void);
void
_cogl_disable_texture_unit (int unit_index);
void
_cogl_set_active_texture_unit (int unit_index);

85
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.
@ -859,12 +812,12 @@ 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);
if (texture != COGL_INVALID_HANDLE)
{
CoglPipelineFilter min;
CoglPipelineFilter mag;
@ -874,6 +827,7 @@ foreach_texture_unit_update_filter_and_wrap_modes (void)
_cogl_pipeline_layer_forward_wrap_modes (unit->layer, texture);
}
}
}
}
typedef struct
@ -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;
}

2
cogl/cogl-pipeline-private.h
View File

@ -611,8 +611,6 @@ struct _CoglPipeline
typedef struct _CoglPipelineFragend
{
int (*get_max_texture_units) (void);
gboolean (*start) (CoglPipeline *pipeline,
int n_layers,
unsigned long pipelines_difference,

7
cogl/driver/gles/cogl-gles2-wrapper.c
View File

@ -269,7 +269,6 @@ cogl_gles2_wrapper_get_locations (GLuint program,
= glGetUniformLocation (program, "cogl_modelview_matrix");
for (i = 0; i < COGL_GLES2_MAX_TEXTURE_UNITS; i++)
if (COGL_GLES2_TEXTURE_UNIT_IS_ENABLED (settings->texture_units, i))
{
char *matrix_var_name = g_strdup_printf ("cogl_texture_matrix[%d]", i);
char *tex_coord_var_name =
@ -283,11 +282,6 @@ cogl_gles2_wrapper_get_locations (GLuint program,
g_free (tex_coord_var_name);
g_free (matrix_var_name);
}
else
{
uniforms->texture_matrix_uniforms[i] = -1;
attribs->multi_texture_coords[i] = -1;
}
uniforms->point_size_uniform
= glGetUniformLocation (program, "cogl_point_size_in");
@ -648,7 +642,6 @@ _cogl_wrap_prepare_for_draw (void)
/* TODO - coverage test */
for (i = 0; i < COGL_GLES2_MAX_TEXTURE_UNITS; i++)
if (COGL_GLES2_TEXTURE_UNIT_IS_ENABLED (w->settings.texture_units, i))
{
GLint tex_coord_var_index;
CoglGles2WrapperTextureUnit *texture_unit;