turnip: Add "unaligned_store" debug option to better test gmem stores

Unaligned store is incredibly rare in CTS, we have to force it to
actually test it.

Signed-off-by: Danylo Piliaiev <dpiliaiev@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/15532>

src/freedreno/vulkan/tu_clear_blit.c

@@ -2947,6 +2947,10 @@ tu_store_gmem_attachment(struct tu_cmd_buffer *cmd,
       (x2 % phys_dev->info->gmem_align_w && x2 != iview->view.width) ||
       y1 % phys_dev->info->gmem_align_h || (y2 % phys_dev->info->gmem_align_h && need_y2_align);
 
+   /* Unaligned store is incredibly rare in CTS, we have to force it to test. */
+   if (unlikely(cmd->device->physical_device->instance->debug_flags & TU_DEBUG_UNALIGNED_STORE))
+      unaligned = true;
+
    /* D32_SFLOAT_S8_UINT is quite special format: it has two planes,
     * one for depth and other for stencil. When resolving a MSAA
     * D32_SFLOAT_S8_UINT to S8_UINT, we need to take that into account.

src/freedreno/vulkan/tu_device.c

@@ -337,6 +337,7 @@ static const struct debug_control tu_debug_options[] = {
    { "syncdraw", TU_DEBUG_SYNCDRAW },
    { "dontcare_as_load", TU_DEBUG_DONT_CARE_AS_LOAD },
    { "rast_order", TU_DEBUG_RAST_ORDER },
+   { "unaligned_store", TU_DEBUG_UNALIGNED_STORE },
    { NULL, 0 }
 };
 

src/freedreno/vulkan/tu_private.h

@@ -267,6 +267,7 @@ enum tu_debug_flags
    TU_DEBUG_DONT_CARE_AS_LOAD = 1 << 12,
    TU_DEBUG_GMEM = 1 << 13,
    TU_DEBUG_RAST_ORDER = 1 << 14,
+   TU_DEBUG_UNALIGNED_STORE = 1 << 15,
 };
 
 struct tu_instance