RenderUtils.java 文件源码

public static void drawNameplate(FontRenderer fontRendererIn, String str, float x, float y, float z, int verticalShift, float viewerYaw, float viewerPitch, boolean isThirdPersonFrontal)
{
    GlStateManager.pushMatrix();
    GlStateManager.translate(x, y, z);
    GlStateManager.glNormal3f(0.0F, 1.0F, 0.0F);
    GlStateManager.rotate(-viewerYaw, 0.0F, 1.0F, 0.0F);
    GlStateManager.rotate((float)(isThirdPersonFrontal ? -1 : 1) * viewerPitch, 1.0F, 0.0F, 0.0F);
    GlStateManager.scale(-0.025F, -0.025F, 0.025F);
    GlStateManager.disableLighting();
    GlStateManager.depthMask(false);

    GlStateManager.enableBlend();
    GlStateManager.tryBlendFuncSeparate(GlStateManager.SourceFactor.SRC_ALPHA, GlStateManager.DestFactor.ONE_MINUS_SRC_ALPHA, GlStateManager.SourceFactor.ONE, GlStateManager.DestFactor.ZERO);
    int i = fontRendererIn.getStringWidth(str) / 2;
    GlStateManager.disableTexture2D();
    Tessellator tessellator = Tessellator.getInstance();
    VertexBuffer vertexbuffer = tessellator.getBuffer();
    vertexbuffer.begin(7, DefaultVertexFormats.POSITION_COLOR);
    vertexbuffer.pos((double)(-i - 1), (double)(-1 + verticalShift), 0.0D).color(0.0F, 0.0F, 0.0F, 0.25F).endVertex();
    vertexbuffer.pos((double)(-i - 1), (double)(8 + verticalShift), 0.0D).color(0.0F, 0.0F, 0.0F, 0.25F).endVertex();
    vertexbuffer.pos((double)(i + 1), (double)(8 + verticalShift), 0.0D).color(0.0F, 0.0F, 0.0F, 0.25F).endVertex();
    vertexbuffer.pos((double)(i + 1), (double)(-1 + verticalShift), 0.0D).color(0.0F, 0.0F, 0.0F, 0.25F).endVertex();
    tessellator.draw();
    GlStateManager.enableTexture2D();

    GlStateManager.depthMask(true);
    fontRendererIn.drawString(str, -fontRendererIn.getStringWidth(str) / 2, verticalShift, -1);
    GlStateManager.enableLighting();
    GlStateManager.disableBlend();
    GlStateManager.color(1.0F, 1.0F, 1.0F, 1.0F);
    GlStateManager.popMatrix();
}