[Mesa-dev] [PATCH] i965: Set MaxFramebufferWidth/Height to 16384, not viewport.

[Kenneth Graunke]

dEQP-GLES31.functional.fbo.no_attachments.maximums.{all,height,size,width}
started hitting assertion failures when emitting SURFACE_STATE, after
commit e8fd60e7891c7 where Samuel increased the maximum viewport size to
32768, from 16384.

MaxFramebufferWidth/Height were being set to the maximum viewport size,
but are actually limited by the SURFACE_STATE width/height field range,
which is 16384 on Gen7+ (where ARB_framebuffer_no_attachments is
exposed).  So, reduce these to 16384 explicitly.

Fixes assert fails in the above mentioned dEQP tests.  (Those tests
still fail, however.)

Signed-off-by: Kenneth Graunke <kenneth at whitecape.org>
---
 src/mesa/drivers/dri/i965/brw_context.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/mesa/drivers/dri/i965/brw_context.c b/src/mesa/drivers/dri/i965/brw_context.c
index f5e4ace..8dcb3f2 100644
--- a/src/mesa/drivers/dri/i965/brw_context.c
+++ b/src/mesa/drivers/dri/i965/brw_context.c
@@ -703,8 +703,8 @@ brw_initialize_context_constants(struct brw_context *brw)
       ctx->Const.MaxVertexStreams = MIN2(4, MAX_VERTEX_STREAMS);
 
    /* ARB_framebuffer_no_attachments */
-   ctx->Const.MaxFramebufferWidth = ctx->Const.MaxViewportWidth;
-   ctx->Const.MaxFramebufferHeight = ctx->Const.MaxViewportHeight;
+   ctx->Const.MaxFramebufferWidth = 16384;
+   ctx->Const.MaxFramebufferHeight = 16384;
    ctx->Const.MaxFramebufferLayers = ctx->Const.MaxArrayTextureLayers;
    ctx->Const.MaxFramebufferSamples = max_samples;
 }
-- 
2.7.2