Mesa (master): i965: scissor rect was inverted when rendering to texture

[Brian Paul]

Module: Mesa
Branch: master
Commit: 3b23a8e07d59ff6ee766e7d3eb384137279a5250
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=3b23a8e07d59ff6ee766e7d3eb384137279a5250

Author: Brian Paul <brianp at vmware.com>
Date:   Mon Jan 26 11:38:30 2009 -0700

i965: scissor rect was inverted when rendering to texture

---

 src/mesa/drivers/dri/i965/brw_sf_state.c |   18 ++++++++++++++----
 1 files changed, 14 insertions(+), 4 deletions(-)

diff --git a/src/mesa/drivers/dri/i965/brw_sf_state.c b/src/mesa/drivers/dri/i965/brw_sf_state.c
index 242b704..af95020 100644
--- a/src/mesa/drivers/dri/i965/brw_sf_state.c
+++ b/src/mesa/drivers/dri/i965/brw_sf_state.c
@@ -84,10 +84,20 @@ static void upload_sf_vp(struct brw_context *brw)
     * Note that the hardware's coordinates are inclusive, while Mesa's min is
     * inclusive but max is exclusive.
     */
-   sfv.scissor.xmin = ctx->DrawBuffer->_Xmin;
-   sfv.scissor.xmax = ctx->DrawBuffer->_Xmax - 1;
-   sfv.scissor.ymin = ctx->DrawBuffer->Height - ctx->DrawBuffer->_Ymax;
-   sfv.scissor.ymax = ctx->DrawBuffer->Height - ctx->DrawBuffer->_Ymin - 1;
+   if (intel_rendering_to_texture(ctx)) {
+      /* texmemory: Y=0=bottom */
+      sfv.scissor.xmin = ctx->DrawBuffer->_Xmin;
+      sfv.scissor.xmax = ctx->DrawBuffer->_Xmax - 1;
+      sfv.scissor.ymin = ctx->DrawBuffer->_Ymin;
+      sfv.scissor.ymax = ctx->DrawBuffer->_Ymax - 1;
+   }
+   else {
+      /* memory: Y=0=top */
+      sfv.scissor.xmin = ctx->DrawBuffer->_Xmin;
+      sfv.scissor.xmax = ctx->DrawBuffer->_Xmax - 1;
+      sfv.scissor.ymin = ctx->DrawBuffer->Height - ctx->DrawBuffer->_Ymax;
+      sfv.scissor.ymax = ctx->DrawBuffer->Height - ctx->DrawBuffer->_Ymin - 1;
+   }
 
    dri_bo_unreference(brw->sf.vp_bo);
    brw->sf.vp_bo = brw_cache_data( &brw->cache, BRW_SF_VP, &sfv, NULL, 0 );