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#include "../Math/Math.h"
#include "../Graphics/GfxDevice.h"
#include "UISquare.h"
struct UISquareLayout
{
Vector2f position;
};
static CustomVertexLayout layout;
InitializeStaticVariables([]() {
VertexAttributeDescriptor POSITION = VertexAttributeDescriptor(0, 2, VertexAttrFormat_Float, sizeof(UISquareLayout));
layout.attributes.push_back(POSITION);
});
void UISquare::Draw()
{
const int nVerts = 4;
const int nIndices = 6;
float pos[] = {
m_Left, m_Bottom, // left-bottom
m_Right, m_Bottom, // right-bottom
m_Right, m_Top, // right-top
m_Left, m_Top, // top-left
};
int indices[] = {
0, 1, 3, // right-top
1, 2, 3, // left-bottom
};
uint8* vb;
uint16* ib;
g_SharedVBO.GetChunk(sizeof(UISquareLayout), sizeof(uint16), 4, 6, Primitive_Triangle, (void**)&vb, (void**)&ib);
UISquareLayout* dst = (UISquareLayout*)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(4, 6);
g_SharedVBO.DrawChunk(layout);
}
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