Mesa (master): r600: reduce number of cache flushes

[Alex Deucher]

Module: Mesa
Branch: master
Commit: 339d42b4e684343c743ea819337c057c0046323f
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=339d42b4e684343c743ea819337c057c0046323f

Author: Alex Deucher <alexdeucher at gmail.com>
Date:   Thu Feb  4 10:45:13 2010 -0500

r600: reduce number of cache flushes

We don't need to flush so often. Next step
would be to move the flushing to the drm and only
flush after each command buffer rather than each
draw.

---

 src/mesa/drivers/dri/r600/r600_blit.c   |    1 +
 src/mesa/drivers/dri/r600/r700_render.c |    5 ++---
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/mesa/drivers/dri/r600/r600_blit.c b/src/mesa/drivers/dri/r600/r600_blit.c
index d7cd59a..4bb77a3 100644
--- a/src/mesa/drivers/dri/r600/r600_blit.c
+++ b/src/mesa/drivers/dri/r600/r600_blit.c
@@ -1652,6 +1652,7 @@ unsigned r600_blit(GLcontext *ctx,
 		 CB_ACTION_ENA_bit | (1 << (id + 6)));
 
     /* 5 */
+    /* XXX drm should handle this in fence submit */
     r700WaitForIdleClean(context);
 
     radeonFlush(ctx);
diff --git a/src/mesa/drivers/dri/r600/r700_render.c b/src/mesa/drivers/dri/r600/r700_render.c
index 96c12ce..8f14af7 100644
--- a/src/mesa/drivers/dri/r600/r700_render.c
+++ b/src/mesa/drivers/dri/r600/r700_render.c
@@ -115,8 +115,6 @@ void r700Start3D(context_t *context)
     END_BATCH();
 
     COMMIT_BATCH();
-
-    r700WaitForIdleClean(context);
 }
 
 GLboolean r700SyncSurf(context_t *context,
@@ -421,7 +419,7 @@ static void r700RunRenderPrimitiveImmediate(GLcontext * ctx, int start, int end,
 }
 
 /* start 3d, idle, cb/db flush */
-#define PRE_EMIT_STATE_BUFSZ 10 + 5 + 18
+#define PRE_EMIT_STATE_BUFSZ 5 + 5 + 18
 
 static GLuint r700PredictRenderSize(GLcontext* ctx,
 				    const struct _mesa_prim *prim,
@@ -934,6 +932,7 @@ static GLboolean r700TryDrawPrims(GLcontext *ctx,
     radeon_debug_remove_indent();
 
     /* Flush render op cached for last several quads. */
+    /* XXX drm should handle this in fence submit */
     r700WaitForIdleClean(context);
 
     rrb = radeon_get_colorbuffer(&context->radeon);