[shader_recompiler, renderer_vulkan] draw sprites whose texture handle comes from a vertex attribute (#4566)

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- [x] I have read and followed the [AI Policy](https://git.eden-emu.dev/eden-emu/eden/src/branch/master/docs/policies/AI.md).
- [x] I have read and followed the [Coding Guidelines](https://git.eden-emu.dev/eden-emu/eden/src/branch/master/docs/policies/Coding.md) to the best of my ability.

-------------------
credit: Ghael-V

Draw sprites whose texture handle comes from a vertex attribute. A bindless handle read from an interpolated vertex attribute could not be tracked to a constant buffer, so pipeline creation threw and every draw using the shader was dropped (FIFA player indicators, shadows and some text).

The handle now gets a sentinel descriptor, and the Vulkan rasterizer splits a triangle-list draw into runs of vertices that share a handle and binds each run's texture before drawing it.

4fec247e9e
Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/4566
Reviewed-by: Shinmegumi <shinmegumi@eden-emu.dev>

src/shader_recompiler/host_translate_info.h

@@ -40,6 +40,8 @@ struct HostTranslateInfo {
     bool support_conditional_barrier{}; ///< True when the device supports barriers in conditional
                                         ///< control flow
     bool single_lane_geometry_subgroups{};
+    bool support_attribute_texture_handle{}; ///< True when the host binds texture handles that
+                                             ///< arrive as vertex attributes
 
     void ApplyDescriptorLimitPolicy() noexcept {
         if (min_ssbo_alignment == 0) {

src/shader_recompiler/ir_opt/texture_pass.cpp

@@ -322,6 +322,10 @@ static inline u32 ReadCbufCached(Environment& env, u32 index, u32 offset) {
     return v;
 }
 
+static inline bool IsAttributeHandle(const ConstBufferAddr& cbuf) {
+    return cbuf.index == ATTRIBUTE_HANDLE_CBUF_INDEX;
+}
+
 static inline u32 GetTextureHandleCached(Environment& env, const ConstBufferAddr& cbuf) {
     // Must all be uniquely different variables
     // If has secondary, then it will be cbuf.secondary_{index|offset}, else its 0.
@@ -341,14 +345,23 @@ static inline u32 GetTextureHandleCached(Environment& env, const ConstBufferAddr
 
 // Cached variants of existing helpers
 static inline TextureType ReadTextureTypeCached(Environment& env, const ConstBufferAddr& cbuf) {
+    if (IsAttributeHandle(cbuf)) {
+        return TextureType::Color2D;
+    }
     return env.ReadTextureType(GetTextureHandleCached(env, cbuf));
 }
 static inline TexturePixelFormat ReadTexturePixelFormatCached(Environment& env,
                                                                 const ConstBufferAddr& cbuf) {
+    if (IsAttributeHandle(cbuf)) {
+        return TexturePixelFormat::A8B8G8R8_UNORM;
+    }
     return env.ReadTexturePixelFormat(GetTextureHandleCached(env, cbuf));
 }
 static inline bool IsTexturePixelFormatIntegerCached(Environment& env,
                                                         const ConstBufferAddr& cbuf) {
+    if (IsAttributeHandle(cbuf)) {
+        return false;
+    }
     return env.IsTexturePixelFormatInteger(GetTextureHandleCached(env, cbuf));
 }
 
@@ -520,15 +533,43 @@ std::optional<ConstBufferAddr> TryGetConstBuffer(const IR::Inst* inst, Environme
     };
 }
 
+bool IsAttributeSourcedHandle(const IR::Value& handle) {
+    if (handle.IsImmediate()) {
+        return false;
+    }
+    const IR::Inst* inst{handle.InstRecursive()};
+    if (inst->GetOpcode() == IR::Opcode::BitCastU32F32 && !inst->Arg(0).IsImmediate()) {
+        inst = inst->Arg(0).InstRecursive();
+    }
+    return inst->GetOpcode() == IR::Opcode::GetAttribute ||
+           inst->GetOpcode() == IR::Opcode::GetAttributeU32;
+}
+
 TextureInst MakeInst(Environment& env, IR::Block* block, IR::Inst& inst, const HostTranslateInfo& host_info) {
     ConstBufferAddr addr;
     if (IsBindless(inst)) {
         const std::optional<ConstBufferAddr> track_addr{TrackCached(inst.Arg(0), env, host_info, block)};
 
-        if (!track_addr) {
-            throw NotImplementedException("Failed to track bindless texture constant buffer");
-        } else {
+        if (track_addr) {
             addr = *track_addr;
+        } else if (host_info.support_attribute_texture_handle &&
+                   IsAttributeSourcedHandle(inst.Arg(0))) {
+            // The handle travels with the vertices (sprite batches pick the texture per quad), so
+            // there is no constant buffer to read it from. The host binds the handle of each run
+            // of vertices that share one.
+            addr = ConstBufferAddr{
+                .index = ATTRIBUTE_HANDLE_CBUF_INDEX,
+                .offset = 0,
+                .shift_left = 0,
+                .secondary_index = 0,
+                .secondary_offset = 0,
+                .secondary_shift_left = 0,
+                .dynamic_offset = {},
+                .count = 1,
+                .has_secondary = false,
+            };
+        } else {
+            throw NotImplementedException("Failed to track bindless texture constant buffer");
         }
     } else {
         addr = ConstBufferAddr{

src/shader_recompiler/shader_info.h

@@ -38,6 +38,10 @@ enum class TextureType : u32 {
 };
 constexpr u32 NUM_TEXTURE_TYPES = 9;
 
+/// Constant buffer index marking a texture handle that the shader receives as a vertex attribute
+/// instead of reading it from a constant buffer. The host supplies the handle of each draw run.
+constexpr u32 ATTRIBUTE_HANDLE_CBUF_INDEX = 0xFFFF;
+
 enum class TexturePixelFormat {
     A8B8G8R8_UNORM,
     A8B8G8R8_SNORM,