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#include "UILine.h"
struct UILineLayout
{
Vector2 position;
};
static CustomVertexLayout layout;
InitializeStaticVariables([]() {
VertexAttributeDescriptor POSITION = VertexAttributeDescriptor(0, 2, VertexAttrFormat_Float, sizeof(UILineLayout));
layout.attributes.push_back(POSITION);
});
void UILine::Draw()
{
const int nVerts = 2;
const int nIndices = 2;
float pos[] = {
m_From.x, m_From.y,
m_To.x, m_To.y,
};
uint16 indices[] = {
0, 1
};
uint8* vb;
uint16* ib;
g_SharedVBO.GetChunk(sizeof(UILineLayout), sizeof(uint16), nVerts, nIndices, Primitive_Line, (void**)&vb, (void**)&ib);
UILineLayout* dst = (UILineLayout*)vb;
for (int i = 0; i < nVerts; ++i)
{
dst[i].position.Set(pos[2 * i], pos[2 * i + 1]);
}
for (int i = 0; i < nIndices; ++i)
ib[i] = indices[i];
g_SharedVBO.ReleaseChunk(nVerts, nIndices);
g_SharedVBO.DrawChunk(layout);
}
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