43 lines
1.1 KiB
C++
43 lines
1.1 KiB
C++
#include "renderer/mesh.h"
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Mesh::Mesh() {
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glGenVertexArrays(1, &m_vao);
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glGenBuffers(1, &m_vbo);
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glGenBuffers(1, &m_ebo);
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glBindVertexArray(m_vao);
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// VBO (vertex buffer)
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glBindBuffer(GL_ARRAY_BUFFER, m_vbo);
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glBufferData(GL_ARRAY_BUFFER, 0, nullptr, GL_STATIC_DRAW);
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// EBO (index buffer)
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glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, m_ebo);
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glBufferData(GL_ELEMENT_ARRAY_BUFFER, 0, nullptr, GL_STATIC_DRAW);
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Vertex::DefineAttrib();
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glBindBuffer(GL_ARRAY_BUFFER, 0);
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glBindVertexArray(0);
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}
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void Mesh::Upload()
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{
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glBindVertexArray(m_vao);
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glBindBuffer(GL_ARRAY_BUFFER, m_vbo);
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glBufferData(GL_ARRAY_BUFFER, m_vertexBuffer.size() * sizeof(Vertex), m_vertexBuffer.data(), GL_STATIC_DRAW);
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// Upload indices
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glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, m_ebo);
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glBufferData(GL_ELEMENT_ARRAY_BUFFER, m_indexBuffer.size() * sizeof(unsigned int), m_indexBuffer.data(), GL_STATIC_DRAW);
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glBindVertexArray(0);
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}
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void Mesh::Render()
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{
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Bind();
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glDrawElements(GL_TRIANGLES, static_cast<GLsizei>(m_indexBuffer.size()), GL_UNSIGNED_INT, 0);
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Unbind();
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} |