55 lines
2.0 KiB
C++
55 lines
2.0 KiB
C++
#include <dust3d/base/debug.h>
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#include <QOpenGLFunctions>
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#include <QOpenGLContext>
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#include "monochrome_opengl_object.h"
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void MonochromeOpenGLObject::update(std::unique_ptr<MonochromeMesh> 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 MonochromeOpenGLObject::draw()
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{
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copyMeshToOpenGL();
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if (0 == m_meshLineVertexCount)
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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_LINES, 0, m_meshLineVertexCount);
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}
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void MonochromeOpenGLObject::copyMeshToOpenGL()
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{
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std::unique_ptr<MonochromeMesh> 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_meshLineVertexCount = 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->lineVertices(), mesh->lineVertexCount() * sizeof(MonochromeOpenGLVertex));
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m_meshLineVertexCount = mesh->lineVertexCount();
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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->glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, sizeof(MonochromeOpenGLVertex), 0);
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f->glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, sizeof(MonochromeOpenGLVertex), reinterpret_cast<void *>(3 * sizeof(GLfloat)));
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f->glVertexAttribPointer(2, 1, GL_FLOAT, GL_FALSE, sizeof(MonochromeOpenGLVertex), reinterpret_cast<void *>(6 * sizeof(GLfloat)));
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m_buffer.release();
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}
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} |