private void SubBind(GPUModel data)
{
for (int i = 0; i < data.ibo.Length; i++)
{
int isTextured = 0;
if (data.tid[i] != string.Empty)
{
int texIdx;
bool texPresent = _texLookup.TryGetValue(data.tid[i], out texIdx);
if (texPresent)
{
isTextured = 1;
FullTexBind(texIdx);
}
}
// set shader vars
_shaderProg.SetUniform("diffuseColor", data.color[i]);
_shaderProg.SetUniform("isTextured", isTextured);
// bind model
GL.BindBuffer(BufferTarget.ArrayBuffer, data.vbo);
GL.BindBuffer(BufferTarget.ElementArrayBuffer, data.ibo[i]);
GL.DrawElements(data.strip ? BeginMode.TriangleStrip : BeginMode.Triangles, data.ic[i], DrawElementsType.UnsignedInt, 0);
}
}
private void FullBind(GPUModel data) // for optimization
{
if (data.vbo == 0)
return;
if (_currentGPUModelID != data.vbo)
{
EndBind(); // incase the previous was a SubBind
BeginBind(data);
SubBind(data);
_currentGPUModelID = data.vbo;
}
else
{
SubBind(data);
}
}
private void BeginBind(GPUModel data)
{
GL.BindBuffer(BufferTarget.ArrayBuffer, data.vbo);
GL.EnableVertexAttribArray(0);
GL.EnableVertexAttribArray(1);
GL.EnableVertexAttribArray(2);
GL.EnableVertexAttribArray(3);
GL.VertexAttribPointer(0, 3, VertexAttribPointerType.Float, false, sizeof(float) * 12, 0);
GL.VertexAttribPointer(1, 3, VertexAttribPointerType.Float, false, sizeof(float) * 12, sizeof(float) * 3);
GL.VertexAttribPointer(2, 2, VertexAttribPointerType.Float, false, sizeof(float) * 12, sizeof(float) * 6);
GL.VertexAttribPointer(3, 4, VertexAttribPointerType.Float, false, sizeof(float) * 12, sizeof(float) * 8);
}