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feat: use custom buffers

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This commit is contained in:
Amir Adal
2025-11-04 18:03:33 +01:00
parent 9e3bc4790b
commit 103fdcaa26
1 changed files with 8 additions and 4 deletions
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12
engine/src/components/batch.cpp
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@ -12,18 +12,22 @@ batch::batch() {
void batch::prepare(glm::mat4 *instances, unsigned int count) {
if (!m_instanceBuffer) {
m_instanceBuffer = std::make_unique<OpenGL::InstanceBuffer>(GL_DYNAMIC_DRAW);
m_instanceBuffer->Data(nullptr, sizeof(glm::mat4) * count);
m_instanceBuffer = new OpenGL::InstanceBuffer(GL_DYNAMIC_DRAW);
OpenGL::Buffer::Bind(m_instanceBuffer);
OpenGL::Buffer::Data(m_instanceBuffer, nullptr, sizeof(glm::mat4) * count);
OpenGL::Buffer::Unbind(m_instanceBuffer);
m_instance_count = count;
} else if (count > m_instance_count) {
// Optional: reallocate only if you *really* have more instances than before
glBindBuffer(GL_ARRAY_BUFFER, m_instance_vbo);
m_instanceBuffer->Data(nullptr, sizeof(glm::mat4) * count);
OpenGL::Buffer::Bind(m_instanceBuffer);
OpenGL::Buffer::Data(m_instanceBuffer, nullptr, sizeof(glm::mat4) * count);
OpenGL::Buffer::Unbind(m_instanceBuffer);
m_instance_count = count;
}
// Just update the data region — much cheaper
m_instanceBuffer->SubData(instances, sizeof(glm::mat4) * count, 0);
OpenGL::Buffer::SubData(m_instanceBuffer, instances, sizeof(glm::mat4) * count, 0);
}
}