1 files changed, 254 insertions, 0 deletions
diff --git a/src/3rdparty/angle/src/libANGLE/renderer/renderer_utils.h b/src/3rdparty/angle/src/libANGLE/renderer/renderer_utils.h
new file mode 100644
index 0000000000..5a1cb38a6a
--- /dev/null
+++ b/src/3rdparty/angle/src/libANGLE/renderer/renderer_utils.h
@@ -0,0 +1,254 @@
+//
+// Copyright 2016 The ANGLE Project Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+// renderer_utils:
+//   Helper methods pertaining to most or all back-ends.
+//
+
+#ifndef LIBANGLE_RENDERER_RENDERER_UTILS_H_
+#define LIBANGLE_RENDERER_RENDERER_UTILS_H_
+
+#include <cstdint>
+
+#include <limits>
+#include <map>
+
+#include "common/angleutils.h"
+#include "libANGLE/angletypes.h"
+
+namespace angle
+{
+struct Format;
+}  // namespace angle
+
+namespace gl
+{
+struct FormatType;
+struct InternalFormat;
+}  // namespace gl
+
+namespace egl
+{
+class AttributeMap;
+}  // namespace egl
+
+namespace rx
+{
+
+class ResourceSerial
+{
+  public:
+    constexpr ResourceSerial() : mValue(kDirty) {}
+    explicit constexpr ResourceSerial(uintptr_t value) : mValue(value) {}
+    constexpr bool operator==(ResourceSerial other) const { return mValue == other.mValue; }
+    constexpr bool operator!=(ResourceSerial other) const { return mValue != other.mValue; }
+
+    void dirty() { mValue = kDirty; }
+    void clear() { mValue = kEmpty; }
+
+    constexpr bool valid() const { return mValue != kEmpty && mValue != kDirty; }
+    constexpr bool empty() const { return mValue == kEmpty; }
+
+  private:
+    constexpr static uintptr_t kDirty = std::numeric_limits<uintptr_t>::max();
+    constexpr static uintptr_t kEmpty = 0;
+
+    uintptr_t mValue;
+};
+
+class SerialFactory;
+
+class Serial final
+{
+  public:
+    constexpr Serial() : mValue(kInvalid) {}
+    constexpr Serial(const Serial &other) = default;
+    Serial &operator=(const Serial &other) = default;
+
+    constexpr bool operator==(const Serial &other) const
+    {
+        return mValue != kInvalid && mValue == other.mValue;
+    }
+    constexpr bool operator!=(const Serial &other) const
+    {
+        return mValue == kInvalid || mValue != other.mValue;
+    }
+    constexpr bool operator>(const Serial &other) const { return mValue > other.mValue; }
+    constexpr bool operator>=(const Serial &other) const { return mValue >= other.mValue; }
+    constexpr bool operator<(const Serial &other) const { return mValue < other.mValue; }
+    constexpr bool operator<=(const Serial &other) const { return mValue <= other.mValue; }
+
+  private:
+    friend class SerialFactory;
+    constexpr explicit Serial(uint64_t value) : mValue(value) {}
+    uint64_t mValue;
+    static constexpr uint64_t kInvalid = 0;
+};
+
+class SerialFactory final : angle::NonCopyable
+{
+  public:
+    SerialFactory() : mSerial(1) {}
+
+    Serial generate()
+    {
+        ASSERT(mSerial != std::numeric_limits<uint64_t>::max());
+        return Serial(mSerial++);
+    }
+
+  private:
+    uint64_t mSerial;
+};
+
+using MipGenerationFunction = void (*)(size_t sourceWidth,
+                                       size_t sourceHeight,
+                                       size_t sourceDepth,
+                                       const uint8_t *sourceData,
+                                       size_t sourceRowPitch,
+                                       size_t sourceDepthPitch,
+                                       uint8_t *destData,
+                                       size_t destRowPitch,
+                                       size_t destDepthPitch);
+
+typedef void (*ColorReadFunction)(const uint8_t *source, uint8_t *dest);
+typedef void (*ColorWriteFunction)(const uint8_t *source, uint8_t *dest);
+typedef void (*ColorCopyFunction)(const uint8_t *source, uint8_t *dest);
+
+class FastCopyFunctionMap
+{
+  public:
+    struct Entry
+    {
+        GLenum format;
+        GLenum type;
+        ColorCopyFunction func;
+    };
+
+    constexpr FastCopyFunctionMap() : FastCopyFunctionMap(nullptr, 0) {}
+
+    constexpr FastCopyFunctionMap(const Entry *data, size_t size) : mSize(size), mData(data) {}
+
+    bool has(const gl::FormatType &formatType) const;
+    ColorCopyFunction get(const gl::FormatType &formatType) const;
+
+  private:
+    size_t mSize;
+    const Entry *mData;
+};
+
+struct PackPixelsParams
+{
+    PackPixelsParams();
+    PackPixelsParams(const gl::Rectangle &area,
+                     GLenum format,
+                     GLenum type,
+                     GLuint outputPitch,
+                     const gl::PixelPackState &pack,
+                     gl::Buffer *packBufferIn,
+                     ptrdiff_t offset);
+
+    gl::Rectangle area;
+    GLenum format;
+    GLenum type;
+    GLuint outputPitch;
+    gl::Buffer *packBuffer;
+    gl::PixelPackState pack;
+    ptrdiff_t offset;
+};
+
+void PackPixels(const PackPixelsParams &params,
+                const angle::Format &sourceFormat,
+                int inputPitch,
+                const uint8_t *source,
+                uint8_t *destination);
+
+ColorWriteFunction GetColorWriteFunction(const gl::FormatType &formatType);
+ColorCopyFunction GetFastCopyFunction(const FastCopyFunctionMap &fastCopyFunctions,
+                                      const gl::FormatType &formatType);
+
+using InitializeTextureDataFunction = void (*)(size_t width,
+                                               size_t height,
+                                               size_t depth,
+                                               uint8_t *output,
+                                               size_t outputRowPitch,
+                                               size_t outputDepthPitch);
+
+using LoadImageFunction = void (*)(size_t width,
+                                   size_t height,
+                                   size_t depth,
+                                   const uint8_t *input,
+                                   size_t inputRowPitch,
+                                   size_t inputDepthPitch,
+                                   uint8_t *output,
+                                   size_t outputRowPitch,
+                                   size_t outputDepthPitch);
+
+struct LoadImageFunctionInfo
+{
+    LoadImageFunctionInfo() : loadFunction(nullptr), requiresConversion(false) {}
+    LoadImageFunctionInfo(LoadImageFunction loadFunction, bool requiresConversion)
+        : loadFunction(loadFunction), requiresConversion(requiresConversion)
+    {
+    }
+
+    LoadImageFunction loadFunction;
+    bool requiresConversion;
+};
+
+using LoadFunctionMap = LoadImageFunctionInfo (*)(GLenum);
+
+bool ShouldUseDebugLayers(const egl::AttributeMap &attribs);
+
+void CopyImageCHROMIUM(const uint8_t *sourceData,
+                       size_t sourceRowPitch,
+                       size_t sourcePixelBytes,
+                       ColorReadFunction readFunction,
+                       uint8_t *destData,
+                       size_t destRowPitch,
+                       size_t destPixelBytes,
+                       ColorWriteFunction colorWriteFunction,
+                       GLenum destUnsizedFormat,
+                       GLenum destComponentType,
+                       size_t width,
+                       size_t height,
+                       bool unpackFlipY,
+                       bool unpackPremultiplyAlpha,
+                       bool unpackUnmultiplyAlpha);
+
+// Incomplete textures are 1x1 textures filled with black, used when samplers are incomplete.
+// This helper class encapsulates handling incomplete textures. Because the GL back-end
+// can take advantage of the driver's incomplete textures, and because clearing multisample
+// textures is so difficult, we can keep an instance of this class in the back-end instead
+// of moving the logic to the Context front-end.
+
+// This interface allows us to call-back to init a multisample texture.
+class MultisampleTextureInitializer
+{
+  public:
+    virtual ~MultisampleTextureInitializer() {}
+    virtual gl::Error initializeMultisampleTextureToBlack(const gl::Context *context,
+                                                          gl::Texture *glTexture) = 0;
+};
+
+class IncompleteTextureSet final : angle::NonCopyable
+{
+  public:
+    IncompleteTextureSet();
+    ~IncompleteTextureSet();
+
+    void onDestroy(const gl::Context *context);
+
+    gl::Error getIncompleteTexture(const gl::Context *context,
+                                   GLenum type,
+                                   MultisampleTextureInitializer *multisampleInitializer,
+                                   gl::Texture **textureOut);
+
+  private:
+    gl::TextureMap mIncompleteTextures;
+};
+
+}  // namespace rx
+
+#endif  // LIBANGLE_RENDERER_RENDERER_UTILS_H_