Mesa (master): freedreno: fix max-line-width
Rob Clark
robclark at kemper.freedesktop.org
Wed Apr 13 18:38:23 UTC 2016
Module: Mesa
Branch: master
Commit: a7eb12d089e1a7f8a311c46aa6aed5dccdeb04ec
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=a7eb12d089e1a7f8a311c46aa6aed5dccdeb04ec
Author: Rob Clark <robclark at freedesktop.org>
Date: Mon Apr 11 17:46:08 2016 -0400
freedreno: fix max-line-width
dEQP noticed that we were advertising completely bogus values. The
actual maximum is 127.0f.
*But* we have to use an artifically low maximum to work around a bug
in the dEQP test, which gets confused when the max line width is too
large and lines start going off-screen.
Signed-off-by: Rob Clark <robclark at freedesktop.org>
---
src/gallium/drivers/freedreno/freedreno_screen.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/src/gallium/drivers/freedreno/freedreno_screen.c b/src/gallium/drivers/freedreno/freedreno_screen.c
index 95bf5ac..0510018 100644
--- a/src/gallium/drivers/freedreno/freedreno_screen.c
+++ b/src/gallium/drivers/freedreno/freedreno_screen.c
@@ -354,6 +354,16 @@ fd_screen_get_paramf(struct pipe_screen *pscreen, enum pipe_capf param)
switch (param) {
case PIPE_CAPF_MAX_LINE_WIDTH:
case PIPE_CAPF_MAX_LINE_WIDTH_AA:
+ /* NOTE: actual value is 127.0f, but this is working around a deqp
+ * bug.. dEQP-GLES3.functional.rasterization.primitives.lines_wide
+ * uses too small of a render target size, and gets confused when
+ * the lines start going offscreen.
+ *
+ * See: https://code.google.com/p/android/issues/detail?id=206513
+ */
+ if (fd_mesa_debug & FD_DBG_DEQP)
+ return 63.0f;
+ return 127.0f;
case PIPE_CAPF_MAX_POINT_WIDTH:
case PIPE_CAPF_MAX_POINT_WIDTH_AA:
return 4092.0f;
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