Mesa (master): anv: Handle VK_WHOLE_SIZE properly for buffer views

[Jason Ekstrand]

Module: Mesa
Branch: master
Commit: 593731ea3cc1aa9385e43ebc18c67574f181e1c3
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=593731ea3cc1aa9385e43ebc18c67574f181e1c3

Author: Jason Ekstrand <jason.ekstrand at intel.com>
Date:   Thu Jul 14 21:11:14 2016 -0700

anv: Handle VK_WHOLE_SIZE properly for buffer views

The old calculation, which used view->offset, encorporated buffer->offset
into the size calculation where it doesn't belong.  This meant that, if
buffer->offset > buffer->size, you would always get a negative size.  This
fixes 170 dEQP-VK.renderpass.attachment.* Vulkan CTS tests on Haswell.

Signed-off-by: Jason Ekstrand <jason at jlekstrand.net>
Reviewed-by: Kenneth Graunke <kenneth at whitecape.org>
Reviewed-by: Nanley Chery <nanley.g.chery at intel.com>
Cc: "12.0" <mesa-stable at lists.freedesktop.org>

---

 src/intel/vulkan/anv_image.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/src/intel/vulkan/anv_image.c b/src/intel/vulkan/anv_image.c
index c38f198..e467e87 100644
--- a/src/intel/vulkan/anv_image.c
+++ b/src/intel/vulkan/anv_image.c
@@ -635,18 +635,19 @@ void anv_buffer_view_init(struct anv_buffer_view *view,
    view->format = anv_get_isl_format(&device->info, pCreateInfo->format,
                                      VK_IMAGE_ASPECT_COLOR_BIT,
                                      VK_IMAGE_TILING_LINEAR);
+   const uint32_t format_bs = isl_format_get_layout(view->format)->bpb / 8;
    view->bo = buffer->bo;
    view->offset = buffer->offset + pCreateInfo->offset;
    view->range = pCreateInfo->range == VK_WHOLE_SIZE ?
-                 buffer->size - view->offset : pCreateInfo->range;
+                 buffer->size - pCreateInfo->offset : pCreateInfo->range;
+   view->range = align_down_npot_u32(view->range, format_bs);
 
    if (buffer->usage & VK_BUFFER_USAGE_UNIFORM_TEXEL_BUFFER_BIT) {
       view->surface_state = alloc_surface_state(device, cmd_buffer);
 
       anv_fill_buffer_surface_state(device, view->surface_state,
                                     view->format,
-                                    view->offset, view->range,
-                                    isl_format_get_layout(view->format)->bpb / 8);
+                                    view->offset, view->range, format_bs);
    } else {
       view->surface_state = (struct anv_state){ 0 };
    }