Mesa (master): mesa: Add UsesDFdy to struct gl_fragment_program.
Paul Berry
stereotype441 at kemper.freedesktop.org
Thu Jul 19 17:05:01 UTC 2012
Module: Mesa
Branch: master
Commit: 5e310e9f8300a357d6bdaf098c72098518b564f3
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=5e310e9f8300a357d6bdaf098c72098518b564f3
Author: Paul Berry <stereotype441 at gmail.com>
Date: Wed Jun 20 12:31:46 2012 -0700
mesa: Add UsesDFdy to struct gl_fragment_program.
The i965 back-end needs to compile dFdy() differently for FBOs and
window system framebuffers, because Y coordinates are flipped between
the two (see commit 82d2596: i965: Compute dFdy() correctly for FBOs).
This boolean will allow it to avoid unnecessarily recompiling shaders
that don't use dFdy().
Reviewed-by: Brian Paul <brianp at vmware.com>
Reviewed-by: Kenneth Graunke <kenneth at whitecape.org>
Reviewed-by: Ian Romanick <ian.d.romanick at intel.com>
---
src/mesa/main/mtypes.h | 1 +
src/mesa/program/program.c | 2 ++
2 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/src/mesa/main/mtypes.h b/src/mesa/main/mtypes.h
index 1f74e6a..4769e10 100644
--- a/src/mesa/main/mtypes.h
+++ b/src/mesa/main/mtypes.h
@@ -2011,6 +2011,7 @@ struct gl_fragment_program
{
struct gl_program Base; /**< base class */
GLboolean UsesKill; /**< shader uses KIL instruction */
+ GLboolean UsesDFdy; /**< shader uses DDY instruction */
GLboolean OriginUpperLeft;
GLboolean PixelCenterInteger;
enum gl_frag_depth_layout FragDepthLayout;
diff --git a/src/mesa/program/program.c b/src/mesa/program/program.c
index 23138ea..15337f4 100644
--- a/src/mesa/program/program.c
+++ b/src/mesa/program/program.c
@@ -546,6 +546,7 @@ _mesa_clone_program(struct gl_context *ctx, const struct gl_program *prog)
const struct gl_fragment_program *fp = gl_fragment_program_const(prog);
struct gl_fragment_program *fpc = gl_fragment_program(clone);
fpc->UsesKill = fp->UsesKill;
+ fpc->UsesDFdy = fp->UsesDFdy;
fpc->OriginUpperLeft = fp->OriginUpperLeft;
fpc->PixelCenterInteger = fp->PixelCenterInteger;
}
@@ -767,6 +768,7 @@ _mesa_combine_programs(struct gl_context *ctx,
newFprog = gl_fragment_program(newProg);
newFprog->UsesKill = fprogA->UsesKill || fprogB->UsesKill;
+ newFprog->UsesDFdy = fprogA->UsesDFdy || fprogB->UsesDFdy;
/* We'll do a search and replace for instances
* of progB_colorFile/progB_colorIndex below...
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