explicit Mailbox(size_t cap)
: capacity_(cap)
, slots_(new SLOT_T<T> [cap + 2 * kSlotPadding])
, stride_(computeStride(cap))
, pushTicket_(0)
, popTicket_(0)
{}
void GeometryBatch::setVertices(const std::shared_ptr<Buffer>& vbo, size_t count, const std::vector<VertexElement>& layout) {
m_vbo = vbo;
m_vertexCount = count;
m_vao.bind();
size_t computedStride = computeStride(layout);
size_t previousOffset = 0;
vbo->bind(GL_ARRAY_BUFFER);
for (size_t i = 0; i < layout.size(); ++i) {
auto element = layout[i];
size_t offset = element.offset;
// if offset is 0 then compute it
if (i != 0 && offset == 0)
offset = previousOffset + layout[i - 1].numComponents * elementTypeSize(layout[i - 1].type);
previousOffset = offset;
size_t stride = element.stride;
if (stride == 0)
stride = computedStride;
glEnableVertexAttribArray(i);
switch (element.type)
{
case VertexElementType::Float:
glVertexAttribPointer(i, element.numComponents, GL_FLOAT, GL_FALSE,
stride, reinterpret_cast<const void*>(offset));
break;
case VertexElementType::Double:
glVertexAttribLPointer(i, element.numComponents, GL_DOUBLE,
stride, reinterpret_cast<const void*>(offset));
case VertexElementType::Byte:
glVertexAttribIPointer(i, element.numComponents, GL_BYTE,
stride, reinterpret_cast<const void*>(offset));
break;
case VertexElementType::UnsignedByte:
glVertexAttribIPointer(i, element.numComponents, GL_UNSIGNED_BYTE,
stride, reinterpret_cast<const void*>(offset));
break;
case VertexElementType::Short:
glVertexAttribIPointer(i, element.numComponents, GL_SHORT,
stride, reinterpret_cast<const void*>(offset));
break;
case VertexElementType::UnsignedShort:
glVertexAttribIPointer(i, element.numComponents, GL_UNSIGNED_SHORT,
stride, reinterpret_cast<const void*>(offset));
break;
case VertexElementType::Int:
glVertexAttribIPointer(i, element.numComponents, GL_INT,
stride, reinterpret_cast<const void*>(offset));
break;
case VertexElementType::UsignedInt:
glVertexAttribIPointer(i, element.numComponents, GL_UNSIGNED_INT,
stride, reinterpret_cast<const void*>(offset));
break;
}
}
}
