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/*
* Cogl
*
* A Low-Level GPU Graphics and Utilities API
*
* Copyright (C) 2009,2010,2012 Intel Corporation.
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use, copy,
* modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
*
*
* Authors:
* Havoc Pennington <hp@pobox.com> for litl
* Robert Bragg <robert@linux.intel.com>
*/
#ifndef _COGL_MATRIX_STACK_PRIVATE_H_
#define _COGL_MATRIX_STACK_PRIVATE_H_
#include "cogl-object-private.h"
#include "cogl-matrix-stack.h"
#include "cogl-context.h"
#include "cogl-framebuffer.h"
typedef enum _CoglMatrixOp
{
COGL_MATRIX_OP_LOAD_IDENTITY,
COGL_MATRIX_OP_TRANSLATE,
COGL_MATRIX_OP_ROTATE,
COGL_MATRIX_OP_ROTATE_QUATERNION,
COGL_MATRIX_OP_ROTATE_EULER,
COGL_MATRIX_OP_SCALE,
COGL_MATRIX_OP_MULTIPLY,
COGL_MATRIX_OP_LOAD,
COGL_MATRIX_OP_SAVE,
} CoglMatrixOp;
struct _CoglMatrixEntry
{
CoglMatrixEntry *parent;
CoglMatrixOp op;
unsigned int ref_count;
#ifdef COGL_DEBUG_ENABLED
/* used for performance tracing */
int composite_gets;
#endif
};
typedef struct _CoglMatrixEntryTranslate
{
CoglMatrixEntry _parent_data;
float x;
float y;
float z;
} CoglMatrixEntryTranslate;
typedef struct _CoglMatrixEntryRotate
{
CoglMatrixEntry _parent_data;
float angle;
float x;
float y;
float z;
} CoglMatrixEntryRotate;
typedef struct _CoglMatrixEntryRotateEuler
{
CoglMatrixEntry _parent_data;
/* This doesn't store an actual CoglEuler in order to avoid the
* padding */
float heading;
float pitch;
float roll;
} CoglMatrixEntryRotateEuler;
typedef struct _CoglMatrixEntryRotateQuaternion
{
CoglMatrixEntry _parent_data;
/* This doesn't store an actual CoglQuaternion in order to avoid the
* padding */
float values[4];
} CoglMatrixEntryRotateQuaternion;
typedef struct _CoglMatrixEntryScale
{
CoglMatrixEntry _parent_data;
float x;
float y;
float z;
} CoglMatrixEntryScale;
typedef struct _CoglMatrixEntryMultiply
{
CoglMatrixEntry _parent_data;
CoglMatrix *matrix;
} CoglMatrixEntryMultiply;
typedef struct _CoglMatrixEntryLoad
{
CoglMatrixEntry _parent_data;
CoglMatrix *matrix;
} CoglMatrixEntryLoad;
typedef struct _CoglMatrixEntrySave
{
CoglMatrixEntry _parent_data;
CoglMatrix *cache;
CoglBool cache_valid;
} CoglMatrixEntrySave;
typedef union _CoglMatrixEntryFull
{
CoglMatrixEntry any;
CoglMatrixEntryTranslate translate;
CoglMatrixEntryRotate rotate;
CoglMatrixEntryRotateEuler rotate_euler;
CoglMatrixEntryRotateQuaternion rotate_quaternion;
CoglMatrixEntryScale scale;
CoglMatrixEntryMultiply multiply;
CoglMatrixEntryLoad load;
CoglMatrixEntrySave save;
} CoglMatrixEntryFull;
struct _CoglMatrixStack
{
CoglObject _parent;
CoglContext *context;
CoglMatrixEntry *last_entry;
};
typedef struct _CoglMatrixEntryCache
{
CoglMatrixEntry *entry;
CoglBool flushed_identity;
CoglBool flipped;
} CoglMatrixEntryCache;
void
_cogl_matrix_entry_identity_init (CoglMatrixEntry *entry);
typedef enum {
COGL_MATRIX_MODELVIEW,
COGL_MATRIX_PROJECTION,
COGL_MATRIX_TEXTURE
} CoglMatrixMode;
void
_cogl_matrix_entry_flush_to_gl_builtins (CoglContext *ctx,
CoglMatrixEntry *entry,
CoglMatrixMode mode,
CoglFramebuffer *framebuffer,
CoglBool disable_flip);
void
_cogl_matrix_entry_cache_init (CoglMatrixEntryCache *cache);
CoglBool
_cogl_matrix_entry_cache_maybe_update (CoglMatrixEntryCache *cache,
CoglMatrixEntry *entry,
CoglBool flip);
void
_cogl_matrix_entry_cache_destroy (CoglMatrixEntryCache *cache);
#endif /* _COGL_MATRIX_STACK_PRIVATE_H_ */
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