Gui.java 文件源码

/**
 * Draws a solid color rectangle with the specified coordinates and color.
 */
public static void drawRect(int left, int top, int right, int bottom, int color)
{
    if (left < right)
    {
        int i = left;
        left = right;
        right = i;
    }

    if (top < bottom)
    {
        int j = top;
        top = bottom;
        bottom = j;
    }

    float f3 = (float)(color >> 24 & 255) / 255.0F;
    float f = (float)(color >> 16 & 255) / 255.0F;
    float f1 = (float)(color >> 8 & 255) / 255.0F;
    float f2 = (float)(color & 255) / 255.0F;
    Tessellator tessellator = Tessellator.getInstance();
    VertexBuffer vertexbuffer = tessellator.getBuffer();
    GlStateManager.enableBlend();
    GlStateManager.disableTexture2D();
    GlStateManager.tryBlendFuncSeparate(GlStateManager.SourceFactor.SRC_ALPHA, GlStateManager.DestFactor.ONE_MINUS_SRC_ALPHA, GlStateManager.SourceFactor.ONE, GlStateManager.DestFactor.ZERO);
    GlStateManager.color(f, f1, f2, f3);
    vertexbuffer.begin(7, DefaultVertexFormats.POSITION);
    vertexbuffer.pos((double)left, (double)bottom, 0.0D).endVertex();
    vertexbuffer.pos((double)right, (double)bottom, 0.0D).endVertex();
    vertexbuffer.pos((double)right, (double)top, 0.0D).endVertex();
    vertexbuffer.pos((double)left, (double)top, 0.0D).endVertex();
    tessellator.draw();
    GlStateManager.enableTexture2D();
    GlStateManager.disableBlend();
}