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
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
|
//
// Copyright (c) 2013 The ANGLE Project Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
// angletypes.h : Defines a variety of structures and enum types that are used throughout libGLESv2
#include "libANGLE/angletypes.h"
#include "libANGLE/Program.h"
#include "libANGLE/VertexAttribute.h"
#include "libANGLE/State.h"
#include "libANGLE/VertexArray.h"
namespace gl
{
PrimitiveType GetPrimitiveType(GLenum drawMode)
{
switch (drawMode)
{
case GL_POINTS:
return PRIMITIVE_POINTS;
case GL_LINES:
return PRIMITIVE_LINES;
case GL_LINE_STRIP:
return PRIMITIVE_LINE_STRIP;
case GL_LINE_LOOP:
return PRIMITIVE_LINE_LOOP;
case GL_TRIANGLES:
return PRIMITIVE_TRIANGLES;
case GL_TRIANGLE_STRIP:
return PRIMITIVE_TRIANGLE_STRIP;
case GL_TRIANGLE_FAN:
return PRIMITIVE_TRIANGLE_FAN;
default:
UNREACHABLE();
return PRIMITIVE_TYPE_MAX;
}
}
SamplerState::SamplerState()
: minFilter(GL_NEAREST_MIPMAP_LINEAR),
magFilter(GL_LINEAR),
wrapS(GL_REPEAT),
wrapT(GL_REPEAT),
wrapR(GL_REPEAT),
maxAnisotropy(1.0f),
minLod(-1000.0f),
maxLod(1000.0f),
compareMode(GL_NONE),
compareFunc(GL_LEQUAL)
{
}
TextureState::TextureState()
: swizzleRed(GL_RED),
swizzleGreen(GL_GREEN),
swizzleBlue(GL_BLUE),
swizzleAlpha(GL_ALPHA),
samplerState(),
baseLevel(0),
maxLevel(1000),
immutableFormat(false),
immutableLevels(0)
{
}
bool TextureState::swizzleRequired() const
{
return swizzleRed != GL_RED || swizzleGreen != GL_GREEN ||
swizzleBlue != GL_BLUE || swizzleAlpha != GL_ALPHA;
}
static void MinMax(int a, int b, int *minimum, int *maximum)
{
if (a < b)
{
*minimum = a;
*maximum = b;
}
else
{
*minimum = b;
*maximum = a;
}
}
bool ClipRectangle(const Rectangle &source, const Rectangle &clip, Rectangle *intersection)
{
int minSourceX, maxSourceX, minSourceY, maxSourceY;
MinMax(source.x, source.x + source.width, &minSourceX, &maxSourceX);
MinMax(source.y, source.y + source.height, &minSourceY, &maxSourceY);
int minClipX, maxClipX, minClipY, maxClipY;
MinMax(clip.x, clip.x + clip.width, &minClipX, &maxClipX);
MinMax(clip.y, clip.y + clip.height, &minClipY, &maxClipY);
if (minSourceX >= maxClipX || maxSourceX <= minClipX || minSourceY >= maxClipY || maxSourceY <= minClipY)
{
if (intersection)
{
intersection->x = minSourceX;
intersection->y = maxSourceY;
intersection->width = maxSourceX - minSourceX;
intersection->height = maxSourceY - minSourceY;
}
return false;
}
else
{
if (intersection)
{
intersection->x = std::max(minSourceX, minClipX);
intersection->y = std::max(minSourceY, minClipY);
intersection->width = std::min(maxSourceX, maxClipX) - std::max(minSourceX, minClipX);
intersection->height = std::min(maxSourceY, maxClipY) - std::max(minSourceY, minClipY);
}
return true;
}
}
bool Box::operator==(const Box &other) const
{
return (x == other.x && y == other.y && z == other.z &&
width == other.width && height == other.height && depth == other.depth);
}
bool Box::operator!=(const Box &other) const
{
return !(*this == other);
}
bool operator==(const Extents &lhs, const Extents &rhs)
{
return lhs.width == rhs.width && lhs.height == rhs.height && lhs.depth == rhs.depth;
}
bool operator!=(const Extents &lhs, const Extents &rhs)
{
return !(lhs == rhs);
}
}
|
