Initial commit of Amber for open source

Amber is a multi-API shader test framework.

Amber lets you capture and communicate shader bugs with the fluidity and ease of a scripting flow:

* No graphics API programming is required.
  * WIP: Supports Vulkan and [Dawn][Dawn] graphics APIs.
* A single text string (or file) maps to a single graphics API pipeline test case.  The text includes:
  * Input data, including buffers and images.
  * Shaders.
  * Expectations for the result of running the pipeline.
* Shaders can be expressed in binary form (as hex), in SPIR-V assembly, or in a higher level shader language.
* After executing the pipeline, result buffers and images can be saved to output files.

This is not an officially supported Google product.

1 files changed, 92 insertions, 0 deletions

diff --git a/src/vulkan/descriptor.h b/src/vulkan/descriptor.h
new file mode 100644
index 0000000..ea24733
--- /dev/null
+++ b/src/vulkan/descriptor.h
@@ -0,0 +1,92 @@
+// Copyright 2018 The Amber Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef SRC_VULKAN_DESCRIPTOR_H_
+#define SRC_VULKAN_DESCRIPTOR_H_
+
+#include <memory>
+
+#include "amber/result.h"
+#include "vulkan/vulkan.h"
+
+namespace amber {
+namespace vulkan {
+
+enum class DescriptorType : uint8_t {
+  kStorageImage = 0,
+  kSampler,
+  kSampledImage,
+  kCombinedImageSampler,
+  kUniformTexelBuffer,
+  kStorageTexelBuffer,
+  kStorageBuffer,
+  kUniformBuffer,
+  kDynamicUniformBuffer,
+  kDynamicStorageBuffer,
+  kInputAttachment,
+};
+
+VkDescriptorType ToVkDescriptorType(DescriptorType type);
+
+class Descriptor {
+ public:
+  Descriptor(DescriptorType type, uint32_t desc_set, uint32_t binding);
+
+  ~Descriptor();
+
+  uint32_t GetDescriptorSet() const { return descriptor_set_; }
+  uint32_t GetBinding() const { return binding_; }
+  bool operator<(const Descriptor& r) {
+    if (descriptor_set_ == r.descriptor_set_)
+      return binding_ < r.binding_;
+    return descriptor_set_ < r.descriptor_set_;
+  }
+
+  DescriptorType GetType() const { return type_; }
+
+  bool IsStorageImage() const { return type_ == DescriptorType::kStorageImage; }
+  bool IsSampler() const { return type_ == DescriptorType::kSampler; }
+  bool IsSampledImage() const { return type_ == DescriptorType::kSampledImage; }
+  bool IsCombinedImageSampler() const {
+    return type_ == DescriptorType::kCombinedImageSampler;
+  }
+  bool IsUniformTexelBuffer() const {
+    return type_ == DescriptorType::kUniformTexelBuffer;
+  }
+  bool IsStorageTexelBuffer() const {
+    return type_ == DescriptorType::kStorageTexelBuffer;
+  }
+  bool IsStorageBuffer() const {
+    return type_ == DescriptorType::kStorageBuffer;
+  }
+  bool IsUniformBuffer() const {
+    return type_ == DescriptorType::kUniformBuffer;
+  }
+  bool IsDynamicUniformBuffer() const {
+    return type_ == DescriptorType::kDynamicUniformBuffer;
+  }
+  bool IsDynamicStorageBuffer() const {
+    return type_ == DescriptorType::kDynamicStorageBuffer;
+  }
+
+ private:
+  DescriptorType type_ = DescriptorType::kSampledImage;
+  uint32_t descriptor_set_ = 0;
+  uint32_t binding_ = 0;
+};
+
+}  // namespace vulkan
+}  // namespace amber
+
+#endif  // SRC_VULKAN_DESCRIPTOR_H_