OpenGL-Tutorial/Lesson2Renderer.cpp at main · Ilethas/OpenGL-Tutorial · GitHub

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
#include "Lesson2Renderer.h"


Lesson2Renderer::Lesson2Renderer()
{
}


Lesson2Renderer::~Lesson2Renderer()
{
    if (initialized())
    {
        delete program;
        model.clear();
    }
}


void Lesson2Renderer::initialize()
{
    TutorialRenderer::initialize();
    if (!initialized())
    {
        return;
    }

    //===============
    // Create initial light
    lights.append(std::make_unique<Light>());
    lights.setData(lights.index(0), "Światło", LightModel::Name);
    lights.setData(lights.index(0), QVector3D(4.0f, -6.0f, 2.0f), LightModel::Position);
    lights.setData(lights.index(0), QVector3D(-1.0f, 0.0f, 0.0f), LightModel::Direction);
    lights.setData(lights.index(0), QVector3D(1.0f, 1.0f, 1.0f), LightModel::Color);
    lights.setData(lights.index(0), Light::PointLight, LightModel::LightType);
    lights.setData(lights.index(0), 1.0f, LightModel::Brightness);
    lights.setData(lights.index(0), 22.0f, LightModel::AttenuationRadius);

    program = new QOpenGLShaderProgram();
    loadShaderForProgram(program, QOpenGLShader::Vertex, "Assets/Lesson 2/Shaders/vertex.v");
    loadShaderForProgram(program, QOpenGLShader::Fragment, "Assets/Lesson 2/Shaders/fragment.f");
    program->link();

    vectorsProgram = new QOpenGLShaderProgram();
    loadShaderForProgram(vectorsProgram, QOpenGLShader::Vertex, "Assets/Lesson 2/Shaders/vectorsVertex.v");
    loadShaderForProgram(vectorsProgram, QOpenGLShader::Geometry, "Assets/Lesson 2/Shaders/vectorsGeometry.g");
    loadShaderForProgram(vectorsProgram, QOpenGLShader::Fragment, "Assets/Lesson 2/Shaders/vectorsFragment.f");
    vectorsProgram->link();

    setShininess(42.0f);
    model = Model("Assets\\Models\\Temple\\Temple.obj");
    camera.transform().setPosition(22.0f, 10.0f, 11.0f);
    cameraLookAt(camera, QVector3D(-0.6f, -0.7f, -0.4f));
}


bool Lesson2Renderer::normalMappingUsed() const
{
    return normalMapsAllowed;
}


void Lesson2Renderer::setNormalMappingUsed(bool value)
{
    if (normalMapsAllowed != value)
    {
        normalMapsAllowed = value;
        emit normalMappingUsedChanged(value);
    }
}


bool Lesson2Renderer::displayAsColor() const
{
    return displayNormalsAsColors;
}


void Lesson2Renderer::setDisplayAsColor(bool value)
{
    if (displayNormalsAsColors != value)
    {
        displayNormalsAsColors = value;
        emit displayAsColorChanged(value);
    }
}


bool Lesson2Renderer::displayVectors() const
{
    return displayNormalsAsVectors;
}


void Lesson2Renderer::setDisplayVectors(bool value)
{
    if (displayNormalsAsVectors != value)
    {
        displayNormalsAsVectors = value;
        emit displayVectorsChanged(value);
    }
}


void Lesson2Renderer::paint()
{
    TutorialRenderer::paint();
    if (!initialized())
    {
        return;
    }

    glViewport(viewportPosition.x(), viewportPosition.y(), viewportSize.width(), viewportSize.height());
    glScissor(viewportPosition.x(), viewportPosition.y(), viewportSize.width(), viewportSize.height());
    glEnable(GL_SCISSOR_TEST);
    glClear(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT);
    paintSkybox(camera.transform());

    if (program && program->isLinked())
    {
        program->bind();
        glClear(GL_DEPTH_BUFFER_BIT);

        updateLightUniforms(program);
        updateCameraUniforms(program, camera.transform());
        updateObjectUniforms(program, modelTransform, QQuaternion::fromEulerAngles(90.0f, 0.0f, 0.0f), 0.01f);
        float aspectRatio = viewportSize.width() / static_cast<float>(viewportSize.height());
        program->setUniformValue("projection", Camera::perspective(75.0f, aspectRatio, 0.1f, 500.0f));

        program->setUniformValue("normalMapsAllowed", normalMapsAllowed);
        program->setUniformValue("displayNormalsAsColors", displayNormalsAsColors);
        program->setUniformValue("displayNormalsAsVectors", displayNormalsAsVectors);
        model.draw(program);
        program->release();
    }

    if (vectorsProgram && vectorsProgram->isLinked() && displayNormalsAsVectors)
    {
        vectorsProgram->bind();
        updateLightUniforms(vectorsProgram);
        updateCameraUniforms(vectorsProgram, camera.transform());
        updateObjectUniforms(vectorsProgram, modelTransform, QQuaternion::fromEulerAngles(90.0f, 0.0f, 0.0f), 0.01f);
        float aspectRatio = viewportSize.width() / static_cast<float>(viewportSize.height());
        vectorsProgram->setUniformValue("projection", Camera::perspective(75.0f, aspectRatio, 0.1f, 500.0f));

        model.draw(vectorsProgram);
        vectorsProgram->release();
    }

    paintGizmos(camera.transform());
    // Not strictly needed for this example, but generally useful for when
    // mixing with raw OpenGL.
    window->resetOpenGLState();
}


void Lesson2Renderer::update(float deltaTime)
{
    TutorialRenderer::update(deltaTime);
}