Split backend/common in backend/ and common/

This directory used to contain both the state tracking code for the
backends, and the common utilities that could be used both by the
backends and the rest of the code. Things are now:

 - src/common is utility code for the whole repo
 - src/backend contains libNXT's code
 - src/utils is utility code that we don't want in libNXT

This commit also changes all includes to use global paths from src/
bacause it had to touch a bunch of #include statements anyway.

src/backend/metal/BufferMTL.h

@@ -15,7 +15,7 @@
 #ifndef BACKEND_METAL_BUFFERMTL_H_
 #define BACKEND_METAL_BUFFERMTL_H_
 
-#include "common/Buffer.h"
+#include "backend/Buffer.h"
 #include "common/SerialQueue.h"
 
 #import <Metal/Metal.h>

src/backend/metal/BufferMTL.mm

@@ -12,10 +12,10 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-#include "BufferMTL.h"
+#include "backend/metal/BufferMTL.h"
 
-#include "MetalBackend.h"
-#include "ResourceUploader.h"
+#include "backend/metal/MetalBackend.h"
+#include "backend/metal/ResourceUploader.h"
 
 namespace backend {
 namespace metal {

src/backend/metal/CommandBufferMTL.h

@@ -15,7 +15,7 @@
 #ifndef BACKEND_METAL_COMMANDBUFFERMTL_H_
 #define BACKEND_METAL_COMMANDBUFFERMTL_H_
 
-#include "common/CommandBuffer.h"
+#include "backend/CommandBuffer.h"
 
 #import <Metal/Metal.h>
 

src/backend/metal/CommandBufferMTL.mm

@@ -12,17 +12,17 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-#include "CommandBufferMTL.h"
+#include "backend/metal/CommandBufferMTL.h"
 
-#include "common/Commands.h"
-#include "BufferMTL.h"
-#include "DepthStencilStateMTL.h"
-#include "InputStateMTL.h"
-#include "MetalBackend.h"
-#include "PipelineMTL.h"
-#include "PipelineLayoutMTL.h"
-#include "SamplerMTL.h"
-#include "TextureMTL.h"
+#include "backend/Commands.h"
+#include "backend/metal/BufferMTL.h"
+#include "backend/metal/DepthStencilStateMTL.h"
+#include "backend/metal/InputStateMTL.h"
+#include "backend/metal/MetalBackend.h"
+#include "backend/metal/PipelineMTL.h"
+#include "backend/metal/PipelineLayoutMTL.h"
+#include "backend/metal/SamplerMTL.h"
+#include "backend/metal/TextureMTL.h"
 
 namespace backend {
 namespace metal {

src/backend/metal/DepthStencilStateMTL.h

@@ -15,7 +15,7 @@
 #ifndef BACKEND_METAL_DEPTHSTENCILSTATEMTL_H_
 #define BACKEND_METAL_DEPTHSTENCILSTATEMTL_H_
 
-#include "common/DepthStencilState.h"
+#include "backend/DepthStencilState.h"
 
 #import <Metal/Metal.h>
 

src/backend/metal/DepthStencilStateMTL.mm

@@ -12,9 +12,9 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-#include "DepthStencilStateMTL.h"
+#include "backend/metal/DepthStencilStateMTL.h"
 
-#include "MetalBackend.h"
+#include "backend/metal/MetalBackend.h"
 
 namespace backend {
 namespace metal {

src/backend/metal/GeneratedCodeIncludes.h

@@ -12,13 +12,13 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-#include "MetalBackend.h"
-#include "BufferMTL.h"
-#include "CommandBufferMTL.h"
-#include "DepthStencilStateMTL.h"
-#include "InputStateMTL.h"
-#include "PipelineMTL.h"
-#include "PipelineLayoutMTL.h"
-#include "SamplerMTL.h"
-#include "ShaderModuleMTL.h"
-#include "TextureMTL.h"
+#include "backend/metal/MetalBackend.h"
+#include "backend/metal/BufferMTL.h"
+#include "backend/metal/CommandBufferMTL.h"
+#include "backend/metal/DepthStencilStateMTL.h"
+#include "backend/metal/InputStateMTL.h"
+#include "backend/metal/PipelineMTL.h"
+#include "backend/metal/PipelineLayoutMTL.h"
+#include "backend/metal/SamplerMTL.h"
+#include "backend/metal/ShaderModuleMTL.h"
+#include "backend/metal/TextureMTL.h"

src/backend/metal/InputStateMTL.h

@@ -15,7 +15,7 @@
 #ifndef BACKEND_METAL_INPUTSTATEMTL_H_
 #define BACKEND_METAL_INPUTSTATEMTL_H_
 
-#include "common/InputState.h"
+#include "backend/InputState.h"
 
 #import <Metal/Metal.h>
 

src/backend/metal/InputStateMTL.mm

@@ -12,9 +12,9 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-#include "InputStateMTL.h"
+#include "backend/metal/InputStateMTL.h"
 
-#include "MetalBackend.h"
+#include "backend/metal/MetalBackend.h"
 
 namespace backend {
 namespace metal {

src/backend/metal/MetalBackend.h

@@ -17,13 +17,14 @@
 
 #include "nxt/nxtcpp.h"
 
-#include "common/BindGroup.h"
-#include "common/BindGroupLayout.h"
-#include "common/Device.h"
-#include "common/Framebuffer.h"
-#include "common/Queue.h"
-#include "common/RenderPass.h"
-#include "common/ToBackend.h"
+#include "backend/BindGroup.h"
+#include "backend/BindGroupLayout.h"
+#include "backend/Device.h"
+#include "backend/Framebuffer.h"
+#include "backend/Queue.h"
+#include "backend/RenderPass.h"
+#include "backend/ToBackend.h"
+#include "common/Serial.h"
 
 #include <type_traits>
 #import <Metal/Metal.h>

src/backend/metal/MetalBackend.mm

@@ -12,20 +12,18 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-// TODO(kainino@chromium.org): split this backend into many files
+#include "backend/metal/MetalBackend.h"
 
-#include "MetalBackend.h"
-
-#include "BufferMTL.h"
-#include "CommandBufferMTL.h"
-#include "DepthStencilStateMTL.h"
-#include "InputStateMTL.h"
-#include "PipelineMTL.h"
-#include "PipelineLayoutMTL.h"
-#include "ResourceUploader.h"
-#include "SamplerMTL.h"
-#include "ShaderModuleMTL.h"
-#include "TextureMTL.h"
+#include "backend/metal/BufferMTL.h"
+#include "backend/metal/CommandBufferMTL.h"
+#include "backend/metal/DepthStencilStateMTL.h"
+#include "backend/metal/InputStateMTL.h"
+#include "backend/metal/PipelineMTL.h"
+#include "backend/metal/PipelineLayoutMTL.h"
+#include "backend/metal/ResourceUploader.h"
+#include "backend/metal/SamplerMTL.h"
+#include "backend/metal/ShaderModuleMTL.h"
+#include "backend/metal/TextureMTL.h"
 
 namespace backend {
 namespace metal {

src/backend/metal/PipelineLayoutMTL.h

@@ -15,9 +15,9 @@
 #ifndef BACKEND_METAL_PIPELINELAYOUTMTL_H_
 #define BACKEND_METAL_PIPELINELAYOUTMTL_H_
 
-#include "common/PipelineLayout.h"
+#include "backend/PipelineLayout.h"
 
-#include "common/PerStage.h"
+#include "backend/PerStage.h"
 
 #import <Metal/Metal.h>
 

src/backend/metal/PipelineLayoutMTL.mm

@@ -12,9 +12,9 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-#include "PipelineLayoutMTL.h"
+#include "backend/metal/PipelineLayoutMTL.h"
 
-#include "MetalBackend.h"
+#include "backend/metal/MetalBackend.h"
 
 namespace backend {
 namespace metal {

src/backend/metal/PipelineMTL.h

@@ -15,7 +15,7 @@
 #ifndef BACKEND_METAL_PIPELINEMTL_H_
 #define BACKEND_METAL_PIPELINEMTL_H_
 
-#include "common/Pipeline.h"
+#include "backend/Pipeline.h"
 
 #import <Metal/Metal.h>
 

src/backend/metal/PipelineMTL.mm

@@ -12,13 +12,13 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-#include "PipelineMTL.h"
+#include "backend/metal/PipelineMTL.h"
 
-#include "DepthStencilStateMTL.h"
-#include "InputStateMTL.h"
-#include "MetalBackend.h"
-#include "PipelineLayoutMTL.h"
-#include "ShaderModuleMTL.h"
+#include "backend/metal/DepthStencilStateMTL.h"
+#include "backend/metal/InputStateMTL.h"
+#include "backend/metal/MetalBackend.h"
+#include "backend/metal/PipelineLayoutMTL.h"
+#include "backend/metal/ShaderModuleMTL.h"
 
 namespace backend {
 namespace metal {

src/backend/metal/ResourceUploader.h

@@ -15,6 +15,7 @@
 #ifndef BACKEND_METAL_RESOURCEUPLOADER_H_
 #define BACKEND_METAL_RESOURCEUPLOADER_H_
 
+#include "common/Serial.h"
 #include "common/SerialQueue.h"
 
 #import <Metal/Metal.h>

src/backend/metal/ResourceUploader.mm

@@ -12,9 +12,9 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-#include "ResourceUploader.h"
+#include "backend/metal/ResourceUploader.h"
 
-#include "MetalBackend.h"
+#include "backend/metal/MetalBackend.h"
 
 namespace backend {
 namespace metal {

src/backend/metal/SamplerMTL.h

@@ -15,7 +15,7 @@
 #ifndef BACKEND_METAL_SAMPLERMTL_H_
 #define BACKEND_METAL_SAMPLERMTL_H_
 
-#include "common/Sampler.h"
+#include "backend/Sampler.h"
 
 #import <Metal/Metal.h>
 

src/backend/metal/SamplerMTL.mm

@@ -12,9 +12,9 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-#include "SamplerMTL.h"
+#include "backend/metal/SamplerMTL.h"
 
-#include "MetalBackend.h"
+#include "backend/metal/MetalBackend.h"
 
 namespace backend {
 namespace metal {

src/backend/metal/ShaderModuleMTL.h

@@ -15,7 +15,7 @@
 #ifndef BACKEND_METAL_SHADERMODULEMTL_H_
 #define BACKEND_METAL_SHADERMODULEMTL_H_
 
-#include "common/ShaderModule.h"
+#include "backend/ShaderModule.h"
 
 #import <Metal/Metal.h>
 

src/backend/metal/ShaderModuleMTL.mm

@@ -12,9 +12,9 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-#include "ShaderModuleMTL.h"
+#include "backend/metal/ShaderModuleMTL.h"
 
-#include "MetalBackend.h"
+#include "backend/metal/MetalBackend.h"
 
 #include <spirv-cross/spirv_msl.hpp>
 

src/backend/metal/TextureMTL.h

@@ -15,7 +15,7 @@
 #ifndef BACKEND_METAL_TEXTUREMTL_H_
 #define BACKEND_METAL_TEXTUREMTL_H_
 
-#include "common/Texture.h"
+#include "backend/Texture.h"
 
 #import <Metal/Metal.h>
 

src/backend/metal/TextureMTL.mm

@@ -12,9 +12,9 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-#include "TextureMTL.h"
+#include "backend/metal/TextureMTL.h"
 
-#include "MetalBackend.h"
+#include "backend/metal/MetalBackend.h"
 
 namespace backend {
 namespace metal {