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Skip the check of maxFragmentCombinedOutputResources for Mesa llvmpipe driver 

The Mesa Gallium llvmpipe driver is a software rasterizer that uses LLVM
to do runtime code generation. It seems to put incorrect value for
maxFragmentCombinedOutputResources, like we see on desktop GPUs.

Some relative values are as below.
vkLimits.maxFragmentCombinedOutputResources: 8
kMaxColorAttachments: 8
baseLimits.v1.maxStorageTexturesPerShaderStage: 4
baseLimits.v1.maxStorageBuffersPerShaderStage: 8

This CL will skip the check of this limit on llvmpipe, like we did for
desktop GPUs.

BUG=dawn:1311
Change-Id: I1698f6e26dd62b56f3819980fa2dcc986c9c5ba3
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/81941
Reviewed-by: Jiawei Shao <jiawei.shao@intel.com>
Reviewed-by: Hao Li <hao.x.li@intel.com>
Reviewed-by: Austin Eng <enga@chromium.org>
Commit-Queue: Austin Eng <enga@chromium.org>
This commit is contained in:
Yang Gu 2022-02-25 18:30:47 +00:00 committed by Dawn LUCI CQ
parent 41610a83d1
commit 6a9f9bd1ff
3 changed files with 7 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
src/dawn/common/GPUInfo.cpp
View File

@ -63,6 +63,9 @@ namespace gpu_info {
bool IsIntel(PCIVendorID vendorId) {
return vendorId == kVendorID_Intel;
}
bool IsMesa(PCIVendorID vendorId) {
return vendorId == kVendorID_Mesa;
}
bool IsNvidia(PCIVendorID vendorId) {
return vendorId == kVendorID_Nvidia;
}

2
src/dawn/common/GPUInfo.h
View File

@ -27,6 +27,7 @@ namespace gpu_info {
static constexpr PCIVendorID kVendorID_ARM = 0x13B5;
static constexpr PCIVendorID kVendorID_ImgTec = 0x1010;
static constexpr PCIVendorID kVendorID_Intel = 0x8086;
static constexpr PCIVendorID kVendorID_Mesa = 0x10005;
static constexpr PCIVendorID kVendorID_Nvidia = 0x10DE;
static constexpr PCIVendorID kVendorID_Qualcomm = 0x5143;
static constexpr PCIVendorID kVendorID_Google = 0x1AE0;
@ -39,6 +40,7 @@ namespace gpu_info {
bool IsARM(PCIVendorID vendorId);
bool IsImgTec(PCIVendorID vendorId);
bool IsIntel(PCIVendorID vendorId);
bool IsMesa(PCIVendorID vendorId);
bool IsNvidia(PCIVendorID vendorId);
bool IsQualcomm(PCIVendorID vendorId);
bool IsSwiftshader(PCIVendorID vendorId, PCIDeviceID deviceId);

4
src/dawn/native/vulkan/AdapterVk.cpp
View File

@ -285,10 +285,10 @@ namespace dawn::native::vulkan {
// Only check maxFragmentCombinedOutputResources on mobile GPUs. Desktop GPUs drivers seem
// to put incorrect values for this limit with things like 8 or 16 when they can do bindless
// storage buffers.
// storage buffers. Mesa llvmpipe driver also puts 8 here.
uint32_t vendorId = mDeviceInfo.properties.vendorID;
if (!gpu_info::IsAMD(vendorId) && !gpu_info::IsIntel(vendorId) &&
!gpu_info::IsNvidia(vendorId)) {
!gpu_info::IsMesa(vendorId) && !gpu_info::IsNvidia(vendorId)) {
if (vkLimits.maxFragmentCombinedOutputResources <
kMaxColorAttachments + baseLimits.v1.maxStorageTexturesPerShaderStage +
baseLimits.v1.maxStorageBuffersPerShaderStage) {