From c921e496eb47de49a4d6ce62527581b966dca259 Mon Sep 17 00:00:00 2001
From: Fernando Sahmkow <fsahmkow27@gmail.com>
Date: Fri, 3 Jan 2020 16:16:29 -0400
Subject: GPU: Implement guest driver profile and deduce texture handler sizes.

---
 src/video_core/shader/const_buffer_locker.h |  8 ++++++++
 src/video_core/shader/decode.cpp            | 21 +++++++++++++++++++++
 src/video_core/shader/shader_ir.cpp         |  1 +
 src/video_core/shader/shader_ir.h           |  1 +
 4 files changed, 31 insertions(+)

(limited to 'src/video_core/shader')

diff --git a/src/video_core/shader/const_buffer_locker.h b/src/video_core/shader/const_buffer_locker.h
index d32e2d657..78d9d7037 100644
--- a/src/video_core/shader/const_buffer_locker.h
+++ b/src/video_core/shader/const_buffer_locker.h
@@ -10,6 +10,7 @@
 #include "common/hash.h"
 #include "video_core/engines/const_buffer_engine_interface.h"
 #include "video_core/engines/shader_type.h"
+#include "video_core/guest_driver.h"
 
 namespace VideoCommon::Shader {
 
@@ -71,6 +72,13 @@ public:
         return bindless_samplers;
     }
 
+    VideoCore::GuestDriverProfile* AccessGuestDriverProfile() {
+        if (engine) {
+            return &(engine->AccessGuestDriverProfile());
+        }
+        return nullptr;
+    }
+
 private:
     const Tegra::Engines::ShaderType stage;
     Tegra::Engines::ConstBufferEngineInterface* engine = nullptr;
diff --git a/src/video_core/shader/decode.cpp b/src/video_core/shader/decode.cpp
index 22c3e5120..aed35a9b8 100644
--- a/src/video_core/shader/decode.cpp
+++ b/src/video_core/shader/decode.cpp
@@ -315,4 +315,25 @@ u32 ShaderIR::DecodeInstr(NodeBlock& bb, u32 pc) {
     return pc + 1;
 }
 
+void ShaderIR::PostDecode() {
+    // Deduce texture handler size if needed
+    auto* gpu_driver = locker.AccessGuestDriverProfile();
+    if (gpu_driver) {
+        if (!gpu_driver->TextureHandlerSizeKnown() && used_samplers.size() > 1) {
+            u32 count{};
+            std::vector<u32> bound_offsets;
+            for (const auto& sampler : used_samplers) {
+                if (sampler.IsBindless()) {
+                    continue;
+                }
+                count++;
+                bound_offsets.emplace_back(sampler.GetOffset());
+            }
+            if (count > 1) {
+                gpu_driver->DeduceTextureHandlerSize(std::move(bound_offsets));
+            }
+        }
+    }
+}
+
 } // namespace VideoCommon::Shader
diff --git a/src/video_core/shader/shader_ir.cpp b/src/video_core/shader/shader_ir.cpp
index 31eecb3f4..a186e22b2 100644
--- a/src/video_core/shader/shader_ir.cpp
+++ b/src/video_core/shader/shader_ir.cpp
@@ -27,6 +27,7 @@ ShaderIR::ShaderIR(const ProgramCode& program_code, u32 main_offset, CompilerSet
                    ConstBufferLocker& locker)
     : program_code{program_code}, main_offset{main_offset}, settings{settings}, locker{locker} {
     Decode();
+    PostDecode();
 }
 
 ShaderIR::~ShaderIR() = default;
diff --git a/src/video_core/shader/shader_ir.h b/src/video_core/shader/shader_ir.h
index ba1db4c11..92c24247d 100644
--- a/src/video_core/shader/shader_ir.h
+++ b/src/video_core/shader/shader_ir.h
@@ -191,6 +191,7 @@ private:
     };
 
     void Decode();
+    void PostDecode();
 
     NodeBlock DecodeRange(u32 begin, u32 end);
     void DecodeRangeInner(NodeBlock& bb, u32 begin, u32 end);
-- 
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