From: Brian Paul <brianp@vmware.com>
Date: Thu, 3 Sep 2009 20:39:53 +0000 (-0600)
Subject: st/mesa: fix glCopyPixels(GL_STENCIL_INDEX) inverted position
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=c3a0624ef01c3b347ed8a9fd3bab578b52bd9130;p=mesa.git

st/mesa: fix glCopyPixels(GL_STENCIL_INDEX) inverted position

If the renderbuffer orientation is Y=0=TOP we need to invert the dstY
position.
---

diff --git a/src/mesa/state_tracker/st_cb_drawpixels.c b/src/mesa/state_tracker/st_cb_drawpixels.c
index 8b5094a04f3..adb349c1f1e 100644
--- a/src/mesa/state_tracker/st_cb_drawpixels.c
+++ b/src/mesa/state_tracker/st_cb_drawpixels.c
@@ -842,6 +842,10 @@ copy_stencil_pixels(GLcontext *ctx, GLint srcx, GLint srcy,
    else
       usage = PIPE_TRANSFER_WRITE;
    
+   if (st_fb_orientation(ctx->DrawBuffer) == Y_0_TOP) {
+      dsty = rbDraw->Base.Height - dsty - height;
+   }
+
    ptDraw = st_cond_flush_get_tex_transfer(st_context(ctx),
 					   rbDraw->texture, 0, 0, 0,
 					   usage, dstx, dsty,