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
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
|
// Copyright (C) 2015 Klaralvdalens Datakonsult AB (KDAB).
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
import QtQuick 2.2
import Qt3D.Core 2.0
import Qt3D.Render 2.0
import Qt3D.Input 2.0
import Qt3D.Extras 2.0
Entity {
id: sceneRoot
Camera {
id: camera
projectionType: CameraLens.PerspectiveProjection
fieldOfView: 45
aspectRatio: 16/9
nearPlane : 0.1
farPlane : 1000.0
position: Qt.vector3d( 0.0, 0.0, 40.0 )
upVector: Qt.vector3d( 0.0, 1.0, 0.0 )
viewCenter: Qt.vector3d( 0.0, 0.0, 0.0 )
}
OrbitCameraController { camera: camera }
components: [
RenderSettings {
activeFrameGraph: ForwardRenderer {
clearColor: Qt.rgba(0, 0.5, 1, 1)
camera: camera
}
},
// Event Source will be set by the Qt3DQuickWindow
InputSettings { }
]
TorusMesh {
id: torusMesh
radius: 5
minorRadius: 1
rings: 100
slices: 20
}
Entity {
id: torusEntityInlineShader
property Transform transform: Transform {
matrix: {
var m = Qt.matrix4x4();
m.rotate(45, Qt.vector3d(1, 0, 0));
m.translate(Qt.vector3d(-2.0, 0.0, 0.0));
return m;
}
}
Timer {
property bool toggle: false
interval: 2000
repeat: true
triggeredOnStart: true
running: true
onTriggered: {
// Toggle shader code each time we are triggered
if (toggle) {
console.log("Setting color fragment shader");
changingShader.fragmentShaderCode = "
#version 150
in vec3 normal;
in vec3 position;
uniform vec3 finalColor;
out vec4 fragColor;
void main()
{
vec3 n = normalize(normal);
vec3 s = normalize(vec3(1.0, 0.0, 1.0) - position);
vec3 v = normalize(-position);
float diffuse = max(dot(s, n), 0.0);
fragColor = vec4(diffuse * finalColor, 1.0);
}
";
} else {
console.log("Setting greyscale fragment shader");
changingShader.fragmentShaderCode = "
#version 150
in vec3 normal;
in vec3 position;
uniform vec3 finalColor;
out vec4 fragColor;
void main()
{
vec3 n = normalize(normal);
vec3 s = normalize(vec3(1.0, 0.0, 1.0) - position);
vec3 v = normalize(-position);
float diffuse = max(dot(s, n), 0.0);
fragColor = vec4(diffuse * finalColor, 1.0);
float luminance = fragColor.r * 0.299 + fragColor.g * 0.587 + fragColor.b * 0.114;
fragColor = vec4( luminance, luminance, luminance, 1.0f );
}
";
}
toggle = !toggle;
}
}
// Shader defined inline
property Material material: Material {
parameters: Parameter { name: "finalColor"; value: "#e76140" /* Inferno Orange */ }
effect: Effect {
techniques: [
Technique {
filterKeys: FilterKey { name: "renderingStyle"; value: "forward" }
graphicsApiFilter {
api: GraphicsApiFilter.OpenGL
majorVersion: 3
minorVersion: 2
profile: GraphicsApiFilter.CoreProfile
}
renderPasses: RenderPass {
shaderProgram: ShaderProgram {
id: changingShader
vertexShaderCode: "
#version 150
in vec3 vertexPosition;
in vec3 vertexNormal;
out vec3 position;
out vec3 normal;
uniform mat4 modelView;
uniform mat3 modelViewNormal;
uniform mat4 mvp;
void main()
{
normal = normalize(modelViewNormal * vertexNormal);
position = vec3(modelView * vec4(vertexPosition, 1.0));
gl_Position = mvp * vec4(vertexPosition, 1.0);
}
"
fragmentShaderCode: ""
} // ShaderProgram
} // RenderPass
} // Technique
] // techniques
} // Effect
} // Material
components: [ torusMesh, material, transform ]
}
Entity {
id: torusEntitySeparateShader
property Transform transform: Transform {
matrix: {
var m = Qt.matrix4x4();
m.rotate(15, Qt.vector3d(1, 0, 0));
m.translate(Qt.vector3d(2.0, 0.0, 0.0));
return m;
}
}
// Shader defined in a separate file
property Material material: Material {
parameters: Parameter { name: "finalColor"; value: "yellow" }
effect: Effect {
techniques: [
Technique {
filterKeys: FilterKey { name: "renderingStyle"; value: "forward" }
graphicsApiFilter {
api: GraphicsApiFilter.OpenGL
majorVersion: 3
minorVersion: 2
profile: GraphicsApiFilter.CoreProfile
}
renderPasses: RenderPass {
shaderProgram: ShaderProgram {
vertexShaderCode: loadSource("qrc:/simple-shader.vert")
fragmentShaderCode: loadSource("qrc:/simple-shader.frag")
} // ShaderProgram
} // namespace RenderPass
} // Technique
] // techniques
} // Effect
} // Material
components: [ torusMesh, material, transform ]
}
}
|
