Add build flag to control ram available to Vulkan.
--args anv_use_max_ram=true
Also rename enable_external_fd to anv_enable_external_fd.
Change-Id: I05015421a8777c08913dc52d3abdcaecedab6a14
Reviewed-on: https://fuchsia-review.googlesource.com/c/third_party/mesa/+/463874
Reviewed-by: John Bauman <jbauman@google.com>
diff --git a/src/intel/vulkan/BUILD.gn b/src/intel/vulkan/BUILD.gn
index d91a347..25b46ee 100644
--- a/src/intel/vulkan/BUILD.gn
+++ b/src/intel/vulkan/BUILD.gn
@@ -23,15 +23,20 @@
declare_args() {
# TODO(fxbug.dev/67565) - remove once external FD extensions fully supported
- enable_external_fd = false
+ anv_enable_external_fd = false
+ # Give maximum possible memory to Vulkan heap
+ anv_use_max_ram = false
}
config("vulkan_internal_config") {
defines = [ "ANV_MAGMA=1" ]
- if (!enable_external_fd) {
+ if (!anv_enable_external_fd) {
defines += [ "DISABLE_EXTERNAL_FD=1" ]
}
+ if (anv_use_max_ram) {
+ defines += [ "ANV_AVAILABLE_RAM_FRACTION=1.0" ]
+ }
include_dirs = [
".",
diff --git a/src/intel/vulkan/anv_device.c b/src/intel/vulkan/anv_device.c
index ea1caba..d760d2e 100644
--- a/src/intel/vulkan/anv_device.c
+++ b/src/intel/vulkan/anv_device.c
@@ -123,10 +123,14 @@
* or less, we use at most half. If they have more than 4GiB, we use 3/4.
*/
uint64_t available_ram;
+#if defined(ANV_AVAILABLE_RAM_FRACTION)
+ available_ram = (double) total_ram * ANV_AVAILABLE_RAM_FRACTION;
+#else
if (total_ram <= 4ull * 1024ull * 1024ull * 1024ull)
available_ram = total_ram / 2;
else
available_ram = total_ram * 3 / 4;
+#endif
/* We also want to leave some padding for things we allocate in the driver,
* so don't go over 3/4 of the GTT either.
