1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
|
/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2007,2008,2009 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, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef __COGL_TEXTURE_H
#define __COGL_TEXTURE_H
#include "cogl-bitmap-private.h"
#include "cogl-handle.h"
typedef struct _CoglTexture CoglTexture;
typedef struct _CoglTexSliceSpan CoglTexSliceSpan;
typedef struct _CoglSpanIter CoglSpanIter;
struct _CoglTexSliceSpan
{
gint start;
gint size;
gint waste;
};
struct _CoglSpanIter
{
gint index;
GArray *array;
CoglTexSliceSpan *span;
float pos;
float next_pos;
float origin;
float cover_start;
float cover_end;
float intersect_start;
float intersect_end;
float intersect_start_local;
float intersect_end_local;
gboolean intersects;
};
struct _CoglTexture
{
CoglHandleObject _parent;
CoglBitmap bitmap;
gboolean bitmap_owner;
GLenum gl_target;
GLenum gl_intformat;
GLenum gl_format;
GLenum gl_type;
GArray *slice_x_spans;
GArray *slice_y_spans;
GArray *slice_gl_handles;
gint max_waste;
CoglTextureFilter min_filter;
CoglTextureFilter mag_filter;
gboolean is_foreign;
GLint wrap_mode;
gboolean auto_mipmap;
};
/* To improve batching of geometry when submitting vertices to OpenGL we
* log the texture rectangles we want to draw to a journal, so when we
* later flush the journal we aim to batch data, and gl draw calls. */
typedef struct _CoglJournalEntry
{
CoglHandle material;
gint n_layers;
guint32 fallback_mask;
GLuint layer0_override_texture;
} CoglJournalEntry;
CoglTexture*
_cogl_texture_pointer_from_handle (CoglHandle handle);
void
_cogl_texture_set_wrap_mode_parameter (CoglTexture *tex,
GLenum wrap_mode);
gboolean
_cogl_texture_span_has_waste (CoglTexture *tex,
gint x_span_index,
gint y_span_index);
void
_cogl_span_iter_begin (CoglSpanIter *iter,
GArray *array,
float origin,
float cover_start,
float cover_end);
gboolean
_cogl_span_iter_end (CoglSpanIter *iter);
void
_cogl_span_iter_next (CoglSpanIter *iter);
#endif /* __COGL_TEXTURE_H */
|
