GuiSlot.java 文件源码

/**
 * Overlays the background to hide scrolled items
 */
protected void overlayBackground(int startY, int endY, int startAlpha, int endAlpha)
{
    Tessellator tessellator = Tessellator.getInstance();
    WorldRenderer worldrenderer = tessellator.getWorldRenderer();
    this.mc.getTextureManager().bindTexture(Gui.optionsBackground);
    GlStateManager.color(1.0F, 1.0F, 1.0F, 1.0F);
    float f = 32.0F;
    worldrenderer.begin(7, DefaultVertexFormats.POSITION_TEX_COLOR);
    worldrenderer.pos((double)this.left, (double)endY, 0.0D).tex(0.0D, (double)((float)endY / 32.0F)).color(64, 64, 64, endAlpha).endVertex();
    worldrenderer.pos((double)(this.left + this.width), (double)endY, 0.0D).tex((double)((float)this.width / 32.0F), (double)((float)endY / 32.0F)).color(64, 64, 64, endAlpha).endVertex();
    worldrenderer.pos((double)(this.left + this.width), (double)startY, 0.0D).tex((double)((float)this.width / 32.0F), (double)((float)startY / 32.0F)).color(64, 64, 64, startAlpha).endVertex();
    worldrenderer.pos((double)this.left, (double)startY, 0.0D).tex(0.0D, (double)((float)startY / 32.0F)).color(64, 64, 64, startAlpha).endVertex();
    tessellator.draw();
}