ImmediateRenderer.java 文件源码

public ImmediateRenderer(int maxVertices, boolean hasNormals, boolean hasColors, int numTexCoords, ShaderProgram shader) {
    this.maxVertices = maxVertices;
    this.numTexCoords = numTexCoords;
    this.shader = shader;

    VertexAttribute[] attribs = buildVertexAttributes(hasNormals, hasColors, numTexCoords);
    mesh = new Mesh(false, maxVertices, 0, attribs);

    vertices = new float[maxVertices * (mesh.getVertexAttributes().vertexSize / 4)];
    vertexSize = mesh.getVertexAttributes().vertexSize / 4;
    normalOffset = mesh.getVertexAttribute(Usage.Normal) != null ? mesh.getVertexAttribute(Usage.Normal).offset / 4 : 0;
    colorOffset = mesh.getVertexAttribute(Usage.ColorPacked) != null ? mesh.getVertexAttribute(Usage.ColorPacked).offset / 4 : 0;
    texCoordOffset = mesh.getVertexAttribute(Usage.TextureCoordinates) != null ? mesh.getVertexAttribute(Usage.TextureCoordinates).offset / 4 : 0;

    shaderUniformNames = new String[numTexCoords];
    for (int i = 0; i < numTexCoords; i++) {
        shaderUniformNames[i] = "u_sampler" + i;
    }
}