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
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
|
#[vertex]
#version 450
#VERSION_DEFINES
#ifdef MULTIVIEW
#ifdef has_VK_KHR_multiview
#extension GL_EXT_multiview : enable
#define ViewIndex gl_ViewIndex
#else // has_VK_KHR_multiview
#define ViewIndex 0
#endif // has_VK_KHR_multiview
#endif //MULTIVIEW
#define FLAG_FLIP_Y (1 << 0)
#define FLAG_USE_SECTION (1 << 1)
#define FLAG_FORCE_LUMINANCE (1 << 2)
#define FLAG_ALPHA_TO_ZERO (1 << 3)
#define FLAG_SRGB (1 << 4)
#define FLAG_ALPHA_TO_ONE (1 << 5)
#define FLAG_LINEAR (1 << 6)
#ifdef MULTIVIEW
layout(location = 0) out vec3 uv_interp;
#else
layout(location = 0) out vec2 uv_interp;
#endif
layout(push_constant, std430) uniform Params {
vec4 section;
vec2 pixel_size;
float luminance_multiplier;
uint flags;
vec4 color;
}
params;
void main() {
vec2 base_arr[4] = vec2[](vec2(0.0, 0.0), vec2(0.0, 1.0), vec2(1.0, 1.0), vec2(1.0, 0.0));
uv_interp.xy = base_arr[gl_VertexIndex];
#ifdef MULTIVIEW
uv_interp.z = ViewIndex;
#endif
vec2 vpos = uv_interp.xy;
if (bool(params.flags & FLAG_USE_SECTION)) {
vpos = params.section.xy + vpos * params.section.zw;
}
gl_Position = vec4(vpos * 2.0 - 1.0, 0.0, 1.0);
if (bool(params.flags & FLAG_FLIP_Y)) {
uv_interp.y = 1.0 - uv_interp.y;
}
}
#[fragment]
#version 450
#VERSION_DEFINES
#ifdef MULTIVIEW
#ifdef has_VK_KHR_multiview
#extension GL_EXT_multiview : enable
#define ViewIndex gl_ViewIndex
#else // has_VK_KHR_multiview
#define ViewIndex 0
#endif // has_VK_KHR_multiview
#endif //MULTIVIEW
#define FLAG_FLIP_Y (1 << 0)
#define FLAG_USE_SECTION (1 << 1)
#define FLAG_FORCE_LUMINANCE (1 << 2)
#define FLAG_ALPHA_TO_ZERO (1 << 3)
#define FLAG_SRGB (1 << 4)
#define FLAG_ALPHA_TO_ONE (1 << 5)
#define FLAG_LINEAR (1 << 6)
layout(push_constant, std430) uniform Params {
vec4 section;
vec2 pixel_size;
float luminance_multiplier;
uint flags;
vec4 color;
}
params;
#ifndef MODE_SET_COLOR
#ifdef MULTIVIEW
layout(location = 0) in vec3 uv_interp;
#else
layout(location = 0) in vec2 uv_interp;
#endif
#ifdef MULTIVIEW
layout(set = 0, binding = 0) uniform sampler2DArray source_color;
#ifdef MODE_TWO_SOURCES
layout(set = 1, binding = 0) uniform sampler2DArray source_depth;
layout(location = 1) out float depth;
#endif /* MODE_TWO_SOURCES */
#else /* MULTIVIEW */
layout(set = 0, binding = 0) uniform sampler2D source_color;
#ifdef MODE_TWO_SOURCES
layout(set = 1, binding = 0) uniform sampler2D source_color2;
#endif /* MODE_TWO_SOURCES */
#endif /* MULTIVIEW */
#endif /* !SET_COLOR */
layout(location = 0) out vec4 frag_color;
vec3 linear_to_srgb(vec3 color) {
//if going to srgb, clamp from 0 to 1.
color = clamp(color, vec3(0.0), vec3(1.0));
const vec3 a = vec3(0.055f);
return mix((vec3(1.0f) + a) * pow(color.rgb, vec3(1.0f / 2.4f)) - a, 12.92f * color.rgb, lessThan(color.rgb, vec3(0.0031308f)));
}
vec3 srgb_to_linear(vec3 color) {
return mix(pow((color.rgb + vec3(0.055)) * (1.0 / (1.0 + 0.055)), vec3(2.4)), color.rgb * (1.0 / 12.92), lessThan(color.rgb, vec3(0.04045)));
}
void main() {
#ifdef MODE_SET_COLOR
frag_color = params.color;
#else
#ifdef MULTIVIEW
vec3 uv = uv_interp;
#else
vec2 uv = uv_interp;
#endif
#ifdef MODE_PANORAMA_TO_DP
// Note, multiview and panorama should not be mixed at this time
//obtain normal from dual paraboloid uv
#define M_PI 3.14159265359
float side;
uv.y = modf(uv.y * 2.0, side);
side = side * 2.0 - 1.0;
vec3 normal = vec3(uv * 2.0 - 1.0, 0.0);
normal.z = 0.5 - 0.5 * ((normal.x * normal.x) + (normal.y * normal.y));
normal *= -side;
normal = normalize(normal);
//now convert normal to panorama uv
vec2 st = vec2(atan(normal.x, normal.z), acos(normal.y));
if (st.x < 0.0) {
st.x += M_PI * 2.0;
}
uv = st / vec2(M_PI * 2.0, M_PI);
if (side < 0.0) {
//uv.y = 1.0 - uv.y;
uv = 1.0 - uv;
}
#endif /* MODE_PANORAMA_TO_DP */
#ifdef MULTIVIEW
vec4 color = textureLod(source_color, uv, 0.0);
#ifdef MODE_TWO_SOURCES
// In multiview our 2nd input will be our depth map
depth = textureLod(source_depth, uv, 0.0).r;
#endif /* MODE_TWO_SOURCES */
#else /* MULTIVIEW */
vec4 color = textureLod(source_color, uv, 0.0);
#ifdef MODE_TWO_SOURCES
color += textureLod(source_color2, uv, 0.0);
#endif /* MODE_TWO_SOURCES */
#endif /* MULTIVIEW */
if (bool(params.flags & FLAG_FORCE_LUMINANCE)) {
color.rgb = vec3(max(max(color.r, color.g), color.b));
}
if (bool(params.flags & FLAG_ALPHA_TO_ZERO)) {
color.rgb *= color.a;
}
if (bool(params.flags & FLAG_SRGB)) {
color.rgb = linear_to_srgb(color.rgb);
}
if (bool(params.flags & FLAG_ALPHA_TO_ONE)) {
color.a = 1.0;
}
if (bool(params.flags & FLAG_LINEAR)) {
color.rgb = srgb_to_linear(color.rgb);
}
frag_color = color / params.luminance_multiplier;
#endif // MODE_SET_COLOR
}
|