void PopulateViewports(MgPipelineViewportStateCreateInfo viewportState)
{
if (viewportState != null)
{
Viewports = new GLCmdViewportParameter(0, viewportState.Viewports);
Scissors = new GLCmdScissorParameter(0, viewportState.Scissors);
}
else
{
// Should be 0,0 (width, height)
Viewports = new GLCmdViewportParameter(0,
new MgViewport [] {
//new MgViewport{ X = 0, Y = 0, Width = 0, Height = 0 }
}
);
//
Scissors = new GLCmdScissorParameter(0,
new MgRect2D [] {
// new MgRect2D
// {
// Offset = new MgOffset2D{ X = 0, Y = 0},
// Extent = new MgExtent2D{Width = 0, Height = 0 },
// }
}
);
}
}
void InitializeViewportAndScissor(MgPipelineViewportStateCreateInfo viewportState)
{
// if dynamic state has not been supplied, then default viewport is mandatory
bool isViewportUserSupplied = (DynamicStates & AmtGraphicsPipelineDynamicStateFlagBits.VIEWPORT)
== AmtGraphicsPipelineDynamicStateFlagBits.VIEWPORT;
if (viewportState == null || viewportState.Viewports == null)
{
if (!isViewportUserSupplied)
{
throw new InvalidOperationException(nameof(viewportState.Viewports) + " must be supplied.");
}
}
else
{
var vp = viewportState.Viewports[0];
Viewport = new MTLViewport
{
Height = vp.Height,
Width = vp.Width,
OriginX = vp.X,
OriginY = vp.Y,
// HOPE THIS IS RIGHT
ZNear = vp.MinDepth,
ZFar = vp.MaxDepth,
};
}
bool isScissorUserSupplied = (DynamicStates & AmtGraphicsPipelineDynamicStateFlagBits.SCISSOR)
== AmtGraphicsPipelineDynamicStateFlagBits.SCISSOR;
// if dynamic state has not been supplied, then default viewport is mandatory
if (viewportState == null || viewportState.Scissors == null)
{
if (!isScissorUserSupplied)
{
throw new InvalidOperationException(nameof(viewportState.Scissors) + " must be supplied.");
}
}
else
{
var scissor = viewportState.Scissors[0];
ScissorRect = new MTLScissorRect
{
X = (nuint)scissor.Offset.X,
Y = (nuint)scissor.Offset.Y,
Width = (nuint)scissor.Extent.Width,
Height = (nuint)scissor.Extent.Height
};
}
}
