comparison: src/gl/vertexprogram.cpp
src/gl/vertexprogram.cpp
- changeset 118
- 8e1c9f18ae15
- child 119
- 24275a4064f4
equal
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replaced
| 117:121a40d5e34c | 118:8e1c9f18ae15 |
|---|---|
| 1 #include "vertexprogram.h" | |
| 2 #include "document.h" | |
| 3 | |
| 4 static const char vertexShaderSource[] = R"( | |
| 5 #version 330 core | |
| 6 | |
| 7 layout (location = 0) in vec3 in_position; | |
| 8 layout (location = 1) in vec3 in_color; | |
| 9 uniform mat4 view; | |
| 10 uniform mat4 projection; | |
| 11 uniform mat4 model; | |
| 12 smooth out vec3 ex_color; | |
| 13 | |
| 14 void main() | |
| 15 { | |
| 16 gl_Position = projection * view * model * vec4(in_position, 1.0); | |
| 17 ex_color = in_color; | |
| 18 } | |
| 19 )"; | |
| 20 | |
| 21 static const char fragmentShaderSource[] = R"( | |
| 22 #version 330 core | |
| 23 | |
| 24 out vec4 color; | |
| 25 smooth in vec3 ex_color; | |
| 26 | |
| 27 void main(void) | |
| 28 { | |
| 29 color = vec4(ex_color, 1); | |
| 30 } | |
| 31 )"; | |
| 32 | |
| 33 static constexpr int VERTICES_PER_OBJECT = 16; | |
| 34 | |
| 35 | |
| 36 VertexProgram::VertexProgram(QObject *parent) : | |
| 37 AbstractBasicShaderProgram{parent} | |
| 38 { | |
| 39 } | |
| 40 | |
| 41 const char *VertexProgram::vertexShaderSource() const | |
| 42 { | |
| 43 return ::vertexShaderSource; | |
| 44 } | |
| 45 | |
| 46 const char *VertexProgram::fragmentShaderSource() const | |
| 47 { | |
| 48 return ::fragmentShaderSource; | |
| 49 } | |
| 50 | |
| 51 const void *VertexProgram::vertexData() const | |
| 52 { | |
| 53 return this->data.data(); | |
| 54 } | |
| 55 | |
| 56 int VertexProgram::vertexSize() const | |
| 57 { | |
| 58 return sizeof(Vertex); | |
| 59 } | |
| 60 | |
| 61 int VertexProgram::vertexCount() const | |
| 62 { | |
| 63 return this->data.size(); | |
| 64 } | |
| 65 | |
| 66 void VertexProgram::setupVertexArrays() | |
| 67 { | |
| 68 for (int i : {0, 1}) | |
| 69 { | |
| 70 this->program->enableAttributeArray(i); | |
| 71 } | |
| 72 const int stride = this->vertexSize(); | |
| 73 this->program->setAttributeBuffer(0, GL_FLOAT, offsetof(Vertex, position), 3, stride); | |
| 74 this->program->setAttributeBuffer(1, GL_FLOAT, offsetof(Vertex, color), 3, stride); | |
| 75 } | |
| 76 | |
| 77 GLenum VertexProgram::drawMode() const | |
| 78 { | |
| 79 return GL_LINES; | |
| 80 } | |
| 81 | |
| 82 QOpenGLBuffer::UsagePattern VertexProgram::usagePattern() const | |
| 83 { | |
| 84 return QOpenGLBuffer::DynamicDraw; | |
| 85 } | |
| 86 | |
| 87 void VertexProgram::build(const Document *document) | |
| 88 { | |
| 89 constexpr float size = 1; | |
| 90 constexpr glm::vec3 color = {0.0, 1.0, 1.0}; | |
| 91 this->data.clear(); | |
| 92 document->applyToVertices([&](const glm::vec3& vertex, const std::set<ldraw::id_t>&) | |
| 93 { | |
| 94 reserveMore(this->data, VERTICES_PER_OBJECT); | |
| 95 this->data.push_back({vertex, color}); | |
| 96 this->data.push_back({vertex + glm::vec3{size, -size, size}, color}); | |
| 97 this->data.push_back({vertex, color}); | |
| 98 this->data.push_back({vertex + glm::vec3{size, -size, -size}, color}); | |
| 99 this->data.push_back({vertex, color}); | |
| 100 this->data.push_back({vertex + glm::vec3{-size, -size, -size}, color}); | |
| 101 this->data.push_back({vertex, color}); | |
| 102 this->data.push_back({vertex + glm::vec3{-size, -size, size}, color}); | |
| 103 this->data.push_back({vertex + glm::vec3{size, -size, size}, color}); | |
| 104 this->data.push_back({vertex + glm::vec3{size, -size, -size}, color}); | |
| 105 this->data.push_back({vertex + glm::vec3{size, -size, -size}, color}); | |
| 106 this->data.push_back({vertex + glm::vec3{-size, -size, -size}, color}); | |
| 107 this->data.push_back({vertex + glm::vec3{-size, -size, -size}, color}); | |
| 108 this->data.push_back({vertex + glm::vec3{-size, -size, size}, color}); | |
| 109 this->data.push_back({vertex + glm::vec3{-size, -size, size}, color}); | |
| 110 this->data.push_back({vertex + glm::vec3{size, -size, size}, color}); | |
| 111 }); | |
| 112 this->buffer.bind(); | |
| 113 this->buffer.allocate(this->vertexData(), this->vertexCount() * this->vertexSize()); | |
| 114 this->buffer.release(); | |
| 115 } |
