From 017d08a5e040ee476b19d672c17090eaca7fa918 Mon Sep 17 00:00:00 2001
From: Brian <brian.paul@tungstengraphics.com>
Date: Wed, 31 Oct 2007 15:08:19 -0600
Subject: [PATCH] get rid of xmesa_clear_buffers()

---
 src/mesa/pipe/xlib/xm_dd.c      | 39 ---------------------------------
 src/mesa/pipe/xlib/xm_surface.c | 13 ++++-------
 src/mesa/pipe/xlib/xmesaP.h     |  3 ---
 3 files changed, 4 insertions(+), 51 deletions(-)

diff --git a/src/mesa/pipe/xlib/xm_dd.c b/src/mesa/pipe/xlib/xm_dd.c
index 7a9d6648400..a07f17bfea6 100644
--- a/src/mesa/pipe/xlib/xm_dd.c
+++ b/src/mesa/pipe/xlib/xm_dd.c
@@ -273,45 +273,6 @@ clear_nbit_ximage(GLcontext *ctx, struct xmesa_renderbuffer *xrb, GLuint value)
 }
 
 
-
-void
-xmesa_clear_buffers(GLcontext *ctx, GLbitfield buffers, GLuint value)
-{
-   if (ctx->DrawBuffer->Name == 0) {
-      /* this is a window system framebuffer */
-      const GLuint *colorMask = (GLuint *) &ctx->Color.ColorMask;
-      XMesaBuffer b = XMESA_BUFFER(ctx->DrawBuffer);
-
-      /* we can't handle color or index masking */
-      if (*colorMask == 0xffffffff && ctx->Color.IndexMask == 0xffffffff) {
-         if (buffers & BUFFER_BIT_FRONT_LEFT) {
-            /* clear front color buffer */
-            struct gl_renderbuffer *frontRb
-               = ctx->DrawBuffer->Attachment[BUFFER_FRONT_LEFT].Renderbuffer;
-            if (b->frontxrb == xmesa_renderbuffer(frontRb)) {
-               /* renderbuffer is not wrapped - great! */
-               b->frontxrb->clearFunc(ctx, b->frontxrb, value);
-               buffers &= ~BUFFER_BIT_FRONT_LEFT;
-            }
-            else {
-               /* we can't directly clear an alpha-wrapped color buffer */
-            }
-         }
-         if (buffers & BUFFER_BIT_BACK_LEFT) {
-            /* clear back color buffer */
-            struct gl_renderbuffer *backRb
-               = ctx->DrawBuffer->Attachment[BUFFER_BACK_LEFT].Renderbuffer;
-            if (b->backxrb == xmesa_renderbuffer(backRb)) {
-               /* renderbuffer is not wrapped - great! */
-               b->backxrb->clearFunc(ctx, b->backxrb, value);
-               buffers &= ~BUFFER_BIT_BACK_LEFT;
-            }
-         }
-      }
-   }
-}
-
-
 static void
 clear_color_HPCR_ximage( GLcontext *ctx, const GLfloat color[4] )
 {
diff --git a/src/mesa/pipe/xlib/xm_surface.c b/src/mesa/pipe/xlib/xm_surface.c
index 47ed15cccae..4e3368b6b91 100644
--- a/src/mesa/pipe/xlib/xm_surface.c
+++ b/src/mesa/pipe/xlib/xm_surface.c
@@ -214,6 +214,7 @@ xmesa_is_format_supported(struct pipe_context *pipe, uint format)
 void
 xmesa_clear(struct pipe_context *pipe, struct pipe_surface *ps, GLuint value)
 {
+   GET_CURRENT_CONTEXT(ctx);
    struct xmesa_renderbuffer *xrb = xmesa_rb(ps);
 
    /* XXX actually, we should just discard any cached tiles from this
@@ -233,15 +234,9 @@ xmesa_clear(struct pipe_context *pipe, struct pipe_surface *ps, GLuint value)
       }
    }
 
-   if (xrb && xrb->ximage) {
-      /* clearing back color buffer */
-      GET_CURRENT_CONTEXT(ctx);
-      xmesa_clear_buffers(ctx, BUFFER_BIT_BACK_LEFT, value);
-   }
-   else if (xrb && xrb->pixmap) {
-      /* clearing front color buffer */
-      GET_CURRENT_CONTEXT(ctx);
-      xmesa_clear_buffers(ctx, BUFFER_BIT_FRONT_LEFT, value);
+   if (xrb) {
+      /* clearing front/back color buffer */
+      xrb->clearFunc(ctx, xrb, value);
    }
    else {
       /* clearing other buffer */
diff --git a/src/mesa/pipe/xlib/xmesaP.h b/src/mesa/pipe/xlib/xmesaP.h
index bf4b7178f94..f878af974f4 100644
--- a/src/mesa/pipe/xlib/xmesaP.h
+++ b/src/mesa/pipe/xlib/xmesaP.h
@@ -584,9 +584,6 @@ struct xmesa_surface
 extern void
 xmesa_clear(struct pipe_context *pipe, struct pipe_surface *ps, GLuint value);
 
-extern void
-xmesa_clear_buffers(GLcontext *ctx, GLbitfield buffers, GLuint value);
-
 extern struct pipe_context *
 xmesa_create_softpipe(XMesaContext xm);
 
-- 
2.30.2