Mesa (master): radv: Override the uniform buffer offset alignment for World War Z.
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Tue Aug 18 19:20:01 UTC 2020
Module: Mesa
Branch: master
Commit: 0067f8992002b44bf75f98fae43886c5a6227075
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=0067f8992002b44bf75f98fae43886c5a6227075
Author: Bas Nieuwenhuizen <bas at basnieuwenhuizen.nl>
Date: Thu Jul 30 02:49:33 2020 +0200
radv: Override the uniform buffer offset alignment for World War Z.
Game does the equivalent of a
ALIGN(..., minUniformBufferOffsetAlignment >> 4)
which breaks when said alignment is <16 with a SIGFPE.
CC: <mesa-stable at lists.freedesktop.org>
Reviewed-by: Samuel Pitoiset <samuel.pitoiset at gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6120>
---
src/amd/vulkan/radv_device.c | 18 +++++++++++++++++-
src/util/00-mesa-defaults.conf | 4 ++++
src/util/driconf.h | 4 ++++
3 files changed, 25 insertions(+), 1 deletion(-)
diff --git a/src/amd/vulkan/radv_device.c b/src/amd/vulkan/radv_device.c
index 0f40db2cceb..dda535d5538 100644
--- a/src/amd/vulkan/radv_device.c
+++ b/src/amd/vulkan/radv_device.c
@@ -615,6 +615,7 @@ DRI_CONF_BEGIN
DRI_CONF_RADV_REPORT_LLVM9_VERSION_STRING("false")
DRI_CONF_RADV_ENABLE_MRT_OUTPUT_NAN_FIXUP("false")
DRI_CONF_RADV_NO_DYNAMIC_BOUNDS("false")
+ DRI_CONF_RADV_OVERRIDE_UNIFORM_OFFSET_ALIGNMENT(0)
DRI_CONF_SECTION_END
DRI_CONF_SECTION_DEBUG
@@ -1445,6 +1446,21 @@ radv_max_descriptor_set_size()
64 /* storage image */);
}
+static uint32_t
+radv_uniform_buffer_offset_alignment(const struct radv_physical_device *pdevice)
+{
+ uint32_t uniform_offset_alignment = driQueryOptioni(&pdevice->instance->dri_options,
+ "radv_override_uniform_offset_alignment");
+ if (!util_is_power_of_two_or_zero(uniform_offset_alignment)) {
+ fprintf(stderr, "ERROR: invalid radv_override_uniform_offset_alignment setting %d:"
+ "not a power of two\n", uniform_offset_alignment);
+ uniform_offset_alignment = 0;
+ }
+
+ /* Take at least the hardware limit. */
+ return MAX2(uniform_offset_alignment, 4);
+}
+
void radv_GetPhysicalDeviceProperties(
VkPhysicalDevice physicalDevice,
VkPhysicalDeviceProperties* pProperties)
@@ -1527,7 +1543,7 @@ void radv_GetPhysicalDeviceProperties(
.viewportSubPixelBits = 8,
.minMemoryMapAlignment = 4096, /* A page */
.minTexelBufferOffsetAlignment = 4,
- .minUniformBufferOffsetAlignment = 4,
+ .minUniformBufferOffsetAlignment = radv_uniform_buffer_offset_alignment(pdevice),
.minStorageBufferOffsetAlignment = 4,
.minTexelOffset = -32,
.maxTexelOffset = 31,
diff --git a/src/util/00-mesa-defaults.conf b/src/util/00-mesa-defaults.conf
index 2a1dd8f26fe..5cd65ccf18d 100644
--- a/src/util/00-mesa-defaults.conf
+++ b/src/util/00-mesa-defaults.conf
@@ -733,5 +733,9 @@ TODO: document the other workarounds.
<application name="Path of Exile (32-bit)" executable="PathOfExile.exe">
<option name="radv_no_dynamic_bounds" value="true" />
</application>
+
+ <application name="World War Z" application_name_match="WWZ">
+ <option name="radv_override_uniform_offset_alignment" value="16" />
+ </application>
</device>
</driconf>
diff --git a/src/util/driconf.h b/src/util/driconf.h
index c922e94b9f9..d7c734464cc 100644
--- a/src/util/driconf.h
+++ b/src/util/driconf.h
@@ -508,4 +508,8 @@ DRI_CONF_OPT_BEGIN_B(radv_no_dynamic_bounds, def) \
DRI_CONF_DESC("Disabling bounds checking for dynamic buffer descriptors") \
DRI_CONF_OPT_END
+#define DRI_CONF_RADV_OVERRIDE_UNIFORM_OFFSET_ALIGNMENT(def) \
+DRI_CONF_OPT_BEGIN_V(radv_override_uniform_offset_alignment, int, def, "0:128") \
+ DRI_CONF_DESC("Override the minUniformBufferOffsetAlignment exposed to the application. (0 = default)") \
+DRI_CONF_OPT_END
#endif
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