PrimitivesRenderer2D.cs

浏览该文件的文档.

using Engine.Media;
 
namespace Engine.Graphics {
    public class PrimitivesRenderer2D : BasePrimitivesRenderer<FlatBatch2D, TexturedBatch2D, FontBatch2D> {
        public static Matrix ViewportMatrix() {
            Viewport viewport = Display.Viewport;
            float num = 1f / viewport.Width;
            float num2 = 1f / viewport.Height;
            return new Matrix(
                2f * num,
                0f,
                0f,
                0f,
                0f,
                -2f * num2,
                0f,
                0f,
                0f,
                0f,
                1f,
                0f,
                -1f,
                1f,
                0f,
                1f
            );
        }
 
        public FlatBatch2D FlatBatch(int layer = 0,
            DepthStencilState depthStencilState = null,
            RasterizerState rasterizerState = null,
            BlendState blendState = null) {
            depthStencilState = depthStencilState ?? DepthStencilState.None;
            rasterizerState = rasterizerState ?? RasterizerState.CullNoneScissor;
            blendState = blendState ?? BlendState.AlphaBlend;
            return FindFlatBatch(layer, depthStencilState, rasterizerState, blendState);
        }
 
        public TexturedBatch2D TexturedBatch(Texture2D texture,
            bool useAlphaTest = false,
            int layer = 0,
            DepthStencilState depthStencilState = null,
            RasterizerState rasterizerState = null,
            BlendState blendState = null,
            SamplerState samplerState = null) {
            depthStencilState = depthStencilState ?? DepthStencilState.None;
            rasterizerState = rasterizerState ?? RasterizerState.CullNoneScissor;
            blendState = blendState ?? BlendState.AlphaBlend;
            samplerState = samplerState ?? SamplerState.LinearClamp;
            return FindTexturedBatch(
                texture,
                useAlphaTest,
                layer,
                depthStencilState,
                rasterizerState,
                blendState,
                samplerState
            );
        }
 
        public FontBatch2D FontBatch(BitmapFont font = null,
            int layer = 0,
            DepthStencilState depthStencilState = null,
            RasterizerState rasterizerState = null,
            BlendState blendState = null,
            SamplerState samplerState = null) {
            font = font ?? BitmapFont.DebugFont;
            depthStencilState = depthStencilState ?? DepthStencilState.None;
            rasterizerState = rasterizerState ?? RasterizerState.CullNoneScissor;
            blendState = blendState ?? BlendState.AlphaBlend;
            samplerState = samplerState ?? SamplerState.LinearClamp;
            return FindFontBatch(font, layer, depthStencilState, rasterizerState, blendState, samplerState);
        }
 
        public void Flush(bool clearAfterFlush = true, int maxLayer = int.MaxValue) {
            Flush(ViewportMatrix(), clearAfterFlush, maxLayer);
        }
    }
}