SDL3BatchRenderer Class

Handles vertex batching and indexed primitive rendering operations. All geometry is emitted as groups of four vertices with a pre-generated static index buffer using the quad pattern [0, 1, 2, 1, 3, 2], reducing vertex throughput by a third for quads.

internal sealed class SDL3BatchRenderer : System.IDisposable

Inheritance System.Object → SDL3BatchRenderer

Implements System.IDisposable

Methods
IndicesToDraw(int)	Converts a vertex count (always a multiple of Brine2D.Rendering.SDL3BatchRenderer.VerticesPerQuad) to the corresponding index count for indexed drawing.
StageForUpload()	Copies the current vertex batch to the transfer buffer (CPU-only, no GPU pass). Returns (firstVertex, vertexCount) for use in a later copy pass.
VertexOffsetToFirstIndex(int)	Converts a vertex offset (always quad-aligned) to the corresponding first-index offset in the static index buffer.