Vulkan: Increase size of driver uniforms buffer.

This should prevent applications that use a lot of updates from getting bottlenecked on buffer and descriptor set updates. Bug: angleproject:3504 Change-Id: I8fc88b5f13858b8858d88f7e6f43af022c3f6a75 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1647030 Commit-Queue: Jamie Madill <jmadill@chromium.org> Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>

Vulkan: Increase size of driver uniforms buffer.
d43eee64 · Jamie Madill · Commit Bot · 1042250f · d43eee64
Commit d43eee64 authored Jun 14, 2019 by Jamie Madill Committed by Commit Bot Jun 26, 2019
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ContextVk.cpp src/libANGLE/renderer/vulkan/ContextVk.cpp +2 -1

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--- a/src/libANGLE/renderer/vulkan/ContextVk.cpp
+++ b/src/libANGLE/renderer/vulkan/ContextVk.cpp
@@ -66,6 +66,7 @@ constexpr VkBufferUsageFlags kVertexBufferUsage = VK_BUFFER_USAGE_VERTEX_BUFFER_
 constexpr size_t kDefaultValueSize              = sizeof(gl::VertexAttribCurrentValueData::Values);
 constexpr size_t kDefaultBufferSize             = kDefaultValueSize * 16;
 constexpr size_t kDefaultPoolAllocatorPageSize  = 16 * 1024;
+constexpr size_t kDriverUniformsBufferSize      = 64;
 // Wait a maximum of 10s.  If that times out, we declare it a failure.
 constexpr uint64_t kMaxFenceWaitTimeNs = 10'000'000'000llu;
@@ -290,7 +291,7 @@ angle::Result ContextVk::initialize()
    size_t minAlignment = static_cast<size_t>(
        mRenderer->getPhysicalDeviceProperties().limits.minUniformBufferOffsetAlignment);
    mDriverUniformsBuffer.init(mRenderer, VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT, minAlignment,
-                               sizeof(DriverUniforms) * 16, true);
+                               sizeof(DriverUniforms) * kDriverUniformsBufferSize, true);
    // Get the descriptor set layout.
    vk::DescriptorSetLayoutDesc desc = getDriverUniformsDescriptorSetDesc();