mirror of
https://github.com/brl/mutter.git
synced 2024-11-12 17:27:03 -05:00
1a30f4fb15
This adds COGL_PIPELINE_WRAP_MODE_MIRRORED_REPEAT enum so that mirrored texture repeating can be used. This also adds support for emulating the MIRRORED_REPEAT mode via the cogl-spans API so it can also be used with meta textures such as sliced and atlas textures. Reviewed-by: Neil Roberts <neil@linux.intel.com>
385 lines
13 KiB
C
385 lines
13 KiB
C
/*
|
|
* Cogl
|
|
*
|
|
* An object oriented GL/GLES Abstraction/Utility Layer
|
|
*
|
|
* Copyright (C) 2008,2009,2010,2011 Intel Corporation.
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library. If not, see
|
|
* <http://www.gnu.org/licenses/>.
|
|
*
|
|
*
|
|
*
|
|
* Authors:
|
|
* Robert Bragg <robert@linux.intel.com>
|
|
*/
|
|
|
|
#ifndef __COGL_PIPELINE_LAYER_PRIVATE_H
|
|
#define __COGL_PIPELINE_LAYER_PRIVATE_H
|
|
|
|
#include "cogl-pipeline.h"
|
|
#include "cogl-node-private.h"
|
|
#include "cogl-texture.h"
|
|
#include "cogl-matrix.h"
|
|
#include "cogl-pipeline-layer-state.h"
|
|
#include "cogl-internal.h"
|
|
|
|
#include <glib.h>
|
|
|
|
/* This isn't defined in the GLES headers */
|
|
#ifndef GL_CLAMP_TO_BORDER
|
|
#define GL_CLAMP_TO_BORDER 0x812d
|
|
#endif
|
|
#ifndef GL_MIRRORED_REPEAT
|
|
#define GL_MIRRORED_REPEAT 0x8370
|
|
#endif
|
|
|
|
typedef struct _CoglPipelineLayer CoglPipelineLayer;
|
|
#define COGL_PIPELINE_LAYER(OBJECT) ((CoglPipelineLayer *)OBJECT)
|
|
|
|
/* GL_ALWAYS is just used here as a value that is known not to clash
|
|
* with any valid GL wrap modes.
|
|
*
|
|
* XXX: keep the values in sync with the CoglPipelineWrapMode enum
|
|
* so no conversion is actually needed.
|
|
*/
|
|
typedef enum _CoglPipelineWrapModeInternal
|
|
{
|
|
COGL_PIPELINE_WRAP_MODE_INTERNAL_REPEAT = GL_REPEAT,
|
|
COGL_PIPELINE_WRAP_MODE_INTERNAL_MIRRORED_REPEAT = GL_MIRRORED_REPEAT,
|
|
COGL_PIPELINE_WRAP_MODE_INTERNAL_CLAMP_TO_EDGE = GL_CLAMP_TO_EDGE,
|
|
COGL_PIPELINE_WRAP_MODE_INTERNAL_CLAMP_TO_BORDER = GL_CLAMP_TO_BORDER,
|
|
COGL_PIPELINE_WRAP_MODE_INTERNAL_AUTOMATIC = GL_ALWAYS
|
|
} CoglPipelineWrapModeInternal;
|
|
|
|
/* XXX: should I rename these as
|
|
* COGL_PIPELINE_LAYER_STATE_INDEX_XYZ... ?
|
|
*/
|
|
typedef enum
|
|
{
|
|
/* sparse state */
|
|
COGL_PIPELINE_LAYER_STATE_UNIT_INDEX,
|
|
COGL_PIPELINE_LAYER_STATE_TEXTURE_TARGET_INDEX,
|
|
COGL_PIPELINE_LAYER_STATE_TEXTURE_DATA_INDEX,
|
|
COGL_PIPELINE_LAYER_STATE_FILTERS_INDEX,
|
|
COGL_PIPELINE_LAYER_STATE_WRAP_MODES_INDEX,
|
|
COGL_PIPELINE_LAYER_STATE_COMBINE_INDEX,
|
|
COGL_PIPELINE_LAYER_STATE_COMBINE_CONSTANT_INDEX,
|
|
COGL_PIPELINE_LAYER_STATE_USER_MATRIX_INDEX,
|
|
COGL_PIPELINE_LAYER_STATE_POINT_SPRITE_COORDS_INDEX,
|
|
|
|
/* note: layers don't currently have any non-sparse state */
|
|
|
|
COGL_PIPELINE_LAYER_STATE_SPARSE_COUNT,
|
|
COGL_PIPELINE_LAYER_STATE_COUNT = COGL_PIPELINE_LAYER_STATE_SPARSE_COUNT
|
|
} CoglPipelineLayerStateIndex;
|
|
|
|
/* XXX: If you add or remove state groups here you may need to update
|
|
* some of the state masks following this enum too!
|
|
*
|
|
* FIXME: perhaps it would be better to rename this enum to
|
|
* CoglPipelineLayerStateGroup to better convey the fact that a single
|
|
* enum here can map to multiple properties.
|
|
*/
|
|
typedef enum
|
|
{
|
|
COGL_PIPELINE_LAYER_STATE_UNIT =
|
|
1L<<COGL_PIPELINE_LAYER_STATE_UNIT_INDEX,
|
|
COGL_PIPELINE_LAYER_STATE_TEXTURE_TARGET =
|
|
1L<<COGL_PIPELINE_LAYER_STATE_TEXTURE_TARGET_INDEX,
|
|
COGL_PIPELINE_LAYER_STATE_TEXTURE_DATA =
|
|
1L<<COGL_PIPELINE_LAYER_STATE_TEXTURE_DATA_INDEX,
|
|
COGL_PIPELINE_LAYER_STATE_FILTERS =
|
|
1L<<COGL_PIPELINE_LAYER_STATE_FILTERS_INDEX,
|
|
COGL_PIPELINE_LAYER_STATE_WRAP_MODES =
|
|
1L<<COGL_PIPELINE_LAYER_STATE_WRAP_MODES_INDEX,
|
|
|
|
COGL_PIPELINE_LAYER_STATE_COMBINE =
|
|
1L<<COGL_PIPELINE_LAYER_STATE_COMBINE_INDEX,
|
|
COGL_PIPELINE_LAYER_STATE_COMBINE_CONSTANT =
|
|
1L<<COGL_PIPELINE_LAYER_STATE_COMBINE_CONSTANT_INDEX,
|
|
COGL_PIPELINE_LAYER_STATE_USER_MATRIX =
|
|
1L<<COGL_PIPELINE_LAYER_STATE_USER_MATRIX_INDEX,
|
|
|
|
COGL_PIPELINE_LAYER_STATE_POINT_SPRITE_COORDS =
|
|
1L<<COGL_PIPELINE_LAYER_STATE_POINT_SPRITE_COORDS_INDEX,
|
|
|
|
/* COGL_PIPELINE_LAYER_STATE_TEXTURE_INTERN = 1L<<8, */
|
|
|
|
} CoglPipelineLayerState;
|
|
|
|
/*
|
|
* Various special masks that tag state-groups in different ways...
|
|
*/
|
|
|
|
#define COGL_PIPELINE_LAYER_STATE_ALL \
|
|
((1L<<COGL_PIPELINE_LAYER_STATE_COUNT) - 1)
|
|
|
|
#define COGL_PIPELINE_LAYER_STATE_ALL_SPARSE \
|
|
COGL_PIPELINE_LAYER_STATE_ALL
|
|
|
|
#define COGL_PIPELINE_LAYER_STATE_NEEDS_BIG_STATE \
|
|
(COGL_PIPELINE_LAYER_STATE_COMBINE | \
|
|
COGL_PIPELINE_LAYER_STATE_COMBINE_CONSTANT | \
|
|
COGL_PIPELINE_LAYER_STATE_USER_MATRIX | \
|
|
COGL_PIPELINE_LAYER_STATE_POINT_SPRITE_COORDS)
|
|
|
|
#define COGL_PIPELINE_LAYER_STATE_MULTI_PROPERTY \
|
|
(COGL_PIPELINE_LAYER_STATE_FILTERS | \
|
|
COGL_PIPELINE_LAYER_STATE_WRAP_MODES | \
|
|
COGL_PIPELINE_LAYER_STATE_COMBINE)
|
|
|
|
#define COGL_PIPELINE_LAYER_STATE_AFFECTS_VERTEX_CODEGEN 0
|
|
|
|
typedef enum
|
|
{
|
|
/* These are the same values as GL */
|
|
COGL_PIPELINE_COMBINE_FUNC_ADD = 0x0104,
|
|
COGL_PIPELINE_COMBINE_FUNC_ADD_SIGNED = 0x8574,
|
|
COGL_PIPELINE_COMBINE_FUNC_SUBTRACT = 0x84E7,
|
|
COGL_PIPELINE_COMBINE_FUNC_INTERPOLATE = 0x8575,
|
|
COGL_PIPELINE_COMBINE_FUNC_REPLACE = 0x1E01,
|
|
COGL_PIPELINE_COMBINE_FUNC_MODULATE = 0x2100,
|
|
COGL_PIPELINE_COMBINE_FUNC_DOT3_RGB = 0x86AE,
|
|
COGL_PIPELINE_COMBINE_FUNC_DOT3_RGBA = 0x86AF
|
|
} CoglPipelineCombineFunc;
|
|
|
|
typedef enum
|
|
{
|
|
/* These are the same values as GL */
|
|
COGL_PIPELINE_COMBINE_SOURCE_TEXTURE = 0x1702,
|
|
COGL_PIPELINE_COMBINE_SOURCE_CONSTANT = 0x8576,
|
|
COGL_PIPELINE_COMBINE_SOURCE_PRIMARY_COLOR = 0x8577,
|
|
COGL_PIPELINE_COMBINE_SOURCE_PREVIOUS = 0x8578,
|
|
COGL_PIPELINE_COMBINE_SOURCE_TEXTURE0 = 0x84C0
|
|
} CoglPipelineCombineSource;
|
|
|
|
typedef enum
|
|
{
|
|
/* These are the same values as GL */
|
|
COGL_PIPELINE_COMBINE_OP_SRC_COLOR = 0x0300,
|
|
COGL_PIPELINE_COMBINE_OP_ONE_MINUS_SRC_COLOR = 0x0301,
|
|
COGL_PIPELINE_COMBINE_OP_SRC_ALPHA = 0x0302,
|
|
COGL_PIPELINE_COMBINE_OP_ONE_MINUS_SRC_ALPHA = 0x0303
|
|
} CoglPipelineCombineOp;
|
|
|
|
typedef struct
|
|
{
|
|
/* The texture combine state determines how the color of individual
|
|
* texture fragments are calculated. */
|
|
CoglPipelineCombineFunc texture_combine_rgb_func;
|
|
CoglPipelineCombineSource texture_combine_rgb_src[3];
|
|
CoglPipelineCombineOp texture_combine_rgb_op[3];
|
|
|
|
CoglPipelineCombineFunc texture_combine_alpha_func;
|
|
CoglPipelineCombineSource texture_combine_alpha_src[3];
|
|
CoglPipelineCombineOp texture_combine_alpha_op[3];
|
|
|
|
float texture_combine_constant[4];
|
|
|
|
/* The texture matrix dscribes how to transform texture coordinates */
|
|
CoglMatrix matrix;
|
|
|
|
gboolean point_sprite_coords;
|
|
|
|
} CoglPipelineLayerBigState;
|
|
|
|
struct _CoglPipelineLayer
|
|
{
|
|
/* XXX: Please think twice about adding members that *have* be
|
|
* initialized during a _cogl_pipeline_layer_copy. We are aiming
|
|
* to have copies be as cheap as possible and copies may be
|
|
* done by the primitives APIs which means they may happen
|
|
* in performance critical code paths.
|
|
*
|
|
* XXX: If you are extending the state we track please consider if
|
|
* the state is expected to vary frequently across many pipelines or
|
|
* if the state can be shared among many derived pipelines instead.
|
|
* This will determine if the state should be added directly to this
|
|
* structure which will increase the memory overhead for *all*
|
|
* layers or if instead it can go under ->big_state.
|
|
*/
|
|
|
|
/* Layers represent their state in a tree structure where some of
|
|
* the state relating to a given pipeline or layer may actually be
|
|
* owned by one if is ancestors in the tree. We have a common data
|
|
* type to track the tree heirachy so we can share code... */
|
|
CoglNode _parent;
|
|
|
|
/* Some layers have a pipeline owner, which is to say that the layer
|
|
* is referenced in that pipelines->layer_differences list. A layer
|
|
* doesn't always have an owner and may simply be an ancestor for
|
|
* other layers that keeps track of some shared state. */
|
|
CoglPipeline *owner;
|
|
|
|
/* The lowest index is blended first then others on top */
|
|
int index;
|
|
|
|
/* A mask of which state groups are different in this layer
|
|
* in comparison to its parent. */
|
|
unsigned long differences;
|
|
|
|
/* Common differences
|
|
*
|
|
* As a basic way to reduce memory usage we divide the layer
|
|
* state into two groups; the minimal state modified in 90% of
|
|
* all layers and the rest, so that the second group can
|
|
* be allocated dynamically when required.
|
|
*/
|
|
|
|
/* Each layer is directly associated with a single texture unit */
|
|
int unit_index;
|
|
|
|
/* The texture for this layer, or NULL for an empty
|
|
* layer */
|
|
CoglTexture *texture;
|
|
GLenum target;
|
|
|
|
CoglPipelineFilter mag_filter;
|
|
CoglPipelineFilter min_filter;
|
|
|
|
CoglPipelineWrapModeInternal wrap_mode_s;
|
|
CoglPipelineWrapModeInternal wrap_mode_t;
|
|
CoglPipelineWrapModeInternal wrap_mode_p;
|
|
|
|
/* Infrequent differences aren't currently tracked in
|
|
* a separate, dynamically allocated structure as they are
|
|
* for pipelines... */
|
|
CoglPipelineLayerBigState *big_state;
|
|
|
|
/* bitfields */
|
|
|
|
/* Determines if layer->big_state is valid */
|
|
unsigned int has_big_state:1;
|
|
|
|
};
|
|
|
|
typedef gboolean
|
|
(*CoglPipelineLayerStateComparitor) (CoglPipelineLayer *authority0,
|
|
CoglPipelineLayer *authority1);
|
|
|
|
|
|
|
|
void
|
|
_cogl_pipeline_init_default_layers (void);
|
|
|
|
static inline CoglPipelineLayer *
|
|
_cogl_pipeline_layer_get_parent (CoglPipelineLayer *layer)
|
|
{
|
|
CoglNode *parent_node = COGL_NODE (layer)->parent;
|
|
return COGL_PIPELINE_LAYER (parent_node);
|
|
}
|
|
|
|
CoglPipelineLayer *
|
|
_cogl_pipeline_layer_copy (CoglPipelineLayer *layer);
|
|
|
|
void
|
|
_cogl_pipeline_layer_resolve_authorities (CoglPipelineLayer *layer,
|
|
unsigned long differences,
|
|
CoglPipelineLayer **authorities);
|
|
|
|
gboolean
|
|
_cogl_pipeline_layer_equal (CoglPipelineLayer *layer0,
|
|
CoglPipelineLayer *layer1,
|
|
unsigned long differences_mask,
|
|
CoglPipelineEvalFlags flags);
|
|
|
|
CoglPipelineLayer *
|
|
_cogl_pipeline_layer_pre_change_notify (CoglPipeline *required_owner,
|
|
CoglPipelineLayer *layer,
|
|
CoglPipelineLayerState change);
|
|
|
|
void
|
|
_cogl_pipeline_layer_prune_redundant_ancestry (CoglPipelineLayer *layer);
|
|
|
|
gboolean
|
|
_cogl_pipeline_layer_has_alpha (CoglPipelineLayer *layer);
|
|
|
|
gboolean
|
|
_cogl_pipeline_layer_has_user_matrix (CoglPipeline *pipeline,
|
|
int layer_index);
|
|
|
|
/*
|
|
* Calls the pre_paint method on the layer texture if there is
|
|
* one. This will determine whether mipmaps are needed based on the
|
|
* filter settings.
|
|
*/
|
|
void
|
|
_cogl_pipeline_layer_pre_paint (CoglPipelineLayer *layerr);
|
|
|
|
void
|
|
_cogl_pipeline_layer_get_wrap_modes (CoglPipelineLayer *layer,
|
|
CoglPipelineWrapModeInternal *wrap_mode_s,
|
|
CoglPipelineWrapModeInternal *wrap_mode_t,
|
|
CoglPipelineWrapModeInternal *wrap_mode_r);
|
|
|
|
void
|
|
_cogl_pipeline_layer_get_filters (CoglPipelineLayer *layer,
|
|
CoglPipelineFilter *min_filter,
|
|
CoglPipelineFilter *mag_filter);
|
|
|
|
void
|
|
_cogl_pipeline_get_layer_filters (CoglPipeline *pipeline,
|
|
int layer_index,
|
|
CoglPipelineFilter *min_filter,
|
|
CoglPipelineFilter *mag_filter);
|
|
|
|
typedef enum {
|
|
COGL_PIPELINE_LAYER_TYPE_TEXTURE
|
|
} CoglPipelineLayerType;
|
|
|
|
CoglPipelineLayerType
|
|
_cogl_pipeline_layer_get_type (CoglPipelineLayer *layer);
|
|
|
|
CoglTexture *
|
|
_cogl_pipeline_layer_get_texture (CoglPipelineLayer *layer);
|
|
|
|
CoglTexture *
|
|
_cogl_pipeline_layer_get_texture_real (CoglPipelineLayer *layer);
|
|
|
|
CoglPipelineFilter
|
|
_cogl_pipeline_layer_get_min_filter (CoglPipelineLayer *layer);
|
|
|
|
CoglPipelineFilter
|
|
_cogl_pipeline_layer_get_mag_filter (CoglPipelineLayer *layer);
|
|
|
|
CoglPipelineWrapMode
|
|
_cogl_pipeline_layer_get_wrap_mode_s (CoglPipelineLayer *layer);
|
|
|
|
CoglPipelineWrapMode
|
|
_cogl_pipeline_layer_get_wrap_mode_t (CoglPipelineLayer *layer);
|
|
|
|
CoglPipelineWrapMode
|
|
_cogl_pipeline_layer_get_wrap_mode_p (CoglPipelineLayer *layer);
|
|
|
|
unsigned long
|
|
_cogl_pipeline_layer_compare_differences (CoglPipelineLayer *layer0,
|
|
CoglPipelineLayer *layer1);
|
|
|
|
CoglPipelineLayer *
|
|
_cogl_pipeline_layer_get_authority (CoglPipelineLayer *layer,
|
|
unsigned long difference);
|
|
|
|
CoglTexture *
|
|
_cogl_pipeline_layer_get_texture (CoglPipelineLayer *layer);
|
|
|
|
int
|
|
_cogl_pipeline_layer_get_unit_index (CoglPipelineLayer *layer);
|
|
|
|
gboolean
|
|
_cogl_pipeline_layer_needs_combine_separate
|
|
(CoglPipelineLayer *combine_authority);
|
|
|
|
#endif /* __COGL_PIPELINE_LAYER_PRIVATE_H */
|