65 lines
2.8 KiB
C++
65 lines
2.8 KiB
C++
#include "model_opengl_object.h"
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#include <QOpenGLContext>
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#include <QOpenGLFunctions>
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#include <dust3d/base/debug.h>
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void ModelOpenGLObject::update(std::unique_ptr<ModelMesh> mesh)
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{
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QMutexLocker lock(&m_meshMutex);
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m_mesh = std::move(mesh);
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m_meshIsDirty = true;
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}
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void ModelOpenGLObject::draw()
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{
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copyMeshToOpenGL();
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if (0 == m_meshTriangleVertexCount)
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return;
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QOpenGLFunctions* f = QOpenGLContext::currentContext()->functions();
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QOpenGLVertexArrayObject::Binder binder(&m_vertexArrayObject);
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f->glDrawArrays(GL_TRIANGLES, 0, m_meshTriangleVertexCount);
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}
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void ModelOpenGLObject::copyMeshToOpenGL()
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{
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std::unique_ptr<ModelMesh> mesh;
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bool meshChanged = false;
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if (m_meshIsDirty) {
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QMutexLocker lock(&m_meshMutex);
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if (m_meshIsDirty) {
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m_meshIsDirty = false;
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meshChanged = true;
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mesh = std::move(m_mesh);
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}
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}
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if (!meshChanged)
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return;
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m_meshTriangleVertexCount = 0;
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if (mesh) {
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QOpenGLVertexArrayObject::Binder binder(&m_vertexArrayObject);
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if (m_buffer.isCreated())
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m_buffer.destroy();
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m_buffer.create();
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m_buffer.bind();
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m_buffer.allocate(mesh->triangleVertices(), mesh->triangleVertexCount() * sizeof(ModelOpenGLVertex));
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m_meshTriangleVertexCount = mesh->triangleVertexCount();
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QOpenGLFunctions* f = QOpenGLContext::currentContext()->functions();
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f->glEnableVertexAttribArray(0);
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f->glEnableVertexAttribArray(1);
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f->glEnableVertexAttribArray(2);
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f->glEnableVertexAttribArray(3);
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f->glEnableVertexAttribArray(4);
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f->glEnableVertexAttribArray(5);
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f->glEnableVertexAttribArray(6);
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f->glEnableVertexAttribArray(7);
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f->glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, sizeof(ModelOpenGLVertex), 0);
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f->glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, sizeof(ModelOpenGLVertex), reinterpret_cast<void*>(3 * sizeof(GLfloat)));
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f->glVertexAttribPointer(2, 3, GL_FLOAT, GL_FALSE, sizeof(ModelOpenGLVertex), reinterpret_cast<void*>(6 * sizeof(GLfloat)));
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f->glVertexAttribPointer(3, 2, GL_FLOAT, GL_FALSE, sizeof(ModelOpenGLVertex), reinterpret_cast<void*>(9 * sizeof(GLfloat)));
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f->glVertexAttribPointer(4, 1, GL_FLOAT, GL_FALSE, sizeof(ModelOpenGLVertex), reinterpret_cast<void*>(11 * sizeof(GLfloat)));
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f->glVertexAttribPointer(5, 1, GL_FLOAT, GL_FALSE, sizeof(ModelOpenGLVertex), reinterpret_cast<void*>(12 * sizeof(GLfloat)));
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f->glVertexAttribPointer(6, 3, GL_FLOAT, GL_FALSE, sizeof(ModelOpenGLVertex), reinterpret_cast<void*>(13 * sizeof(GLfloat)));
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f->glVertexAttribPointer(7, 1, GL_FLOAT, GL_FALSE, sizeof(ModelOpenGLVertex), reinterpret_cast<void*>(16 * sizeof(GLfloat)));
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m_buffer.release();
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}
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} |