shader/node: Unpack bindless texture encoding

Bindless textures were using u64 to pack the buffer and offset from
where they come from. Drop this in favor of separated entries in the
struct.

Remove the usage of std::set in favor of std::list (it's not std::vector
to avoid reference invalidations) for samplers and images.

1 files changed, 40 insertions, 61 deletions

diff --git a/src/video_core/shader/node.h b/src/video_core/shader/node.h
index 447fb5c1d..4300d9ff4 100644
--- a/src/video_core/shader/node.h
+++ b/src/video_core/shader/node.h
@@ -230,62 +230,49 @@ using NodeBlock = std::vector<Node>;
 class Sampler {
 public:
     /// This constructor is for bound samplers
-    explicit Sampler(std::size_t offset, std::size_t index, Tegra::Shader::TextureType type,
-                     bool is_array, bool is_shadow)
-        : offset{offset}, index{index}, type{type}, is_array{is_array}, is_shadow{is_shadow},
-          is_bindless{false} {}
+    constexpr explicit Sampler(u32 index, u32 offset, Tegra::Shader::TextureType type,
+                               bool is_array, bool is_shadow)
+        : index{index}, offset{offset}, type{type}, is_array{is_array}, is_shadow{is_shadow} {}
 
     /// This constructor is for bindless samplers
-    explicit Sampler(u32 cbuf_index, u32 cbuf_offset, std::size_t index,
-                     Tegra::Shader::TextureType type, bool is_array, bool is_shadow)
-        : offset{(static_cast<u64>(cbuf_index) << 32) | cbuf_offset}, index{index}, type{type},
-          is_array{is_array}, is_shadow{is_shadow}, is_bindless{true} {}
-
-    /// This constructor is for serialization/deserialization
-    explicit Sampler(std::size_t offset, std::size_t index, Tegra::Shader::TextureType type,
-                     bool is_array, bool is_shadow, bool is_bindless)
-        : offset{offset}, index{index}, type{type}, is_array{is_array}, is_shadow{is_shadow},
-          is_bindless{is_bindless} {}
-
-    std::size_t GetOffset() const {
+    constexpr explicit Sampler(u32 index, u32 offset, u32 buffer, Tegra::Shader::TextureType type,
+                               bool is_array, bool is_shadow)
+        : index{index}, offset{offset}, buffer{buffer}, type{type}, is_array{is_array},
+          is_shadow{is_shadow}, is_bindless{true} {}
+
+    constexpr u32 GetIndex() const {
+        return index;
+    }
+
+    constexpr u32 GetOffset() const {
         return offset;
     }
 
-    std::size_t GetIndex() const {
-        return index;
+    constexpr u32 GetBuffer() const {
+        return buffer;
     }
 
-    Tegra::Shader::TextureType GetType() const {
+    constexpr Tegra::Shader::TextureType GetType() const {
         return type;
     }
 
-    bool IsArray() const {
+    constexpr bool IsArray() const {
         return is_array;
     }
 
-    bool IsShadow() const {
+    constexpr bool IsShadow() const {
         return is_shadow;
     }
 
-    bool IsBindless() const {
+    constexpr bool IsBindless() const {
         return is_bindless;
     }
 
-    std::pair<u32, u32> GetBindlessCBuf() const {
-        return {static_cast<u32>(offset >> 32), static_cast<u32>(offset)};
-    }
-
-    bool operator<(const Sampler& rhs) const {
-        return std::tie(index, offset, type, is_array, is_shadow, is_bindless) <
-               std::tie(rhs.index, rhs.offset, rhs.type, rhs.is_array, rhs.is_shadow,
-                        rhs.is_bindless);
-    }
-
 private:
-    /// Offset in TSC memory from which to read the sampler object, as specified by the sampling
-    /// instruction.
-    std::size_t offset{};
-    std::size_t index{}; ///< Value used to index into the generated GLSL sampler array.
+    u32 index{};  ///< Emulated index given for the this sampler.
+    u32 offset{}; ///< Offset in the const buffer from where the sampler is being read.
+    u32 buffer{}; ///< Buffer where the bindless sampler is being read (unused on bound samplers).
+
     Tegra::Shader::TextureType type{}; ///< The type used to sample this texture (Texture2D, etc)
     bool is_array{};    ///< Whether the texture is being sampled as an array texture or not.
     bool is_shadow{};   ///< Whether the texture is being sampled as a depth texture or not.
@@ -294,18 +281,13 @@ private:
 
 class Image final {
 public:
-    constexpr explicit Image(std::size_t offset, std::size_t index, Tegra::Shader::ImageType type)
-        : offset{offset}, index{index}, type{type}, is_bindless{false} {}
-
-    constexpr explicit Image(u32 cbuf_index, u32 cbuf_offset, std::size_t index,
-                             Tegra::Shader::ImageType type)
-        : offset{(static_cast<u64>(cbuf_index) << 32) | cbuf_offset}, index{index}, type{type},
-          is_bindless{true} {}
+    /// This constructor is for bound images
+    constexpr explicit Image(u32 index, u32 offset, Tegra::Shader::ImageType type)
+        : index{index}, offset{offset}, type{type} {}
 
-    constexpr explicit Image(std::size_t offset, std::size_t index, Tegra::Shader::ImageType type,
-                             bool is_bindless, bool is_written, bool is_read, bool is_atomic)
-        : offset{offset}, index{index}, type{type}, is_bindless{is_bindless},
-          is_written{is_written}, is_read{is_read}, is_atomic{is_atomic} {}
+    /// This constructor is for bindless samplers
+    constexpr explicit Image(u32 index, u32 offset, u32 buffer, Tegra::Shader::ImageType type)
+        : index{index}, offset{offset}, buffer{buffer}, type{type}, is_bindless{true} {}
 
     void MarkWrite() {
         is_written = true;
@@ -321,12 +303,16 @@ public:
         is_atomic = true;
     }
 
-    constexpr std::size_t GetOffset() const {
+    constexpr u32 GetIndex() const {
+        return index;
+    }
+
+    constexpr u32 GetOffset() const {
         return offset;
     }
 
-    constexpr std::size_t GetIndex() const {
-        return index;
+    constexpr u32 GetBuffer() const {
+        return buffer;
     }
 
     constexpr Tegra::Shader::ImageType GetType() const {
@@ -349,18 +335,11 @@ public:
         return is_atomic;
     }
 
-    constexpr std::pair<u32, u32> GetBindlessCBuf() const {
-        return {static_cast<u32>(offset >> 32), static_cast<u32>(offset)};
-    }
-
-    constexpr bool operator<(const Image& rhs) const {
-        return std::tie(offset, index, type, is_bindless) <
-               std::tie(rhs.offset, rhs.index, rhs.type, rhs.is_bindless);
-    }
-
 private:
-    u64 offset{};
-    std::size_t index{};
+    u32 index{};
+    u32 offset{};
+    u32 buffer{};
+
     Tegra::Shader::ImageType type{};
     bool is_bindless{};
     bool is_written{};