MaxwellToGL: Implemented tex wrap mode 1 (Wrap, GL_REPEAT).

This clamp mode was removed from OpenGL as of 3.1, we can emulate it by using GL_CLAMP_TO_BORDER to get the border color of the texture, and then manually sampling the edge to mix them in the fragment shader.

src/core/file_sys/disk_filesystem.cpp

@@ -57,10 +57,14 @@ ResultVal<std::unique_ptr<StorageBackend>> Disk_FileSystem::OpenFile(const std::
         std::make_unique<Disk_Storage>(std::move(file)));
 }
 
-ResultCode Disk_FileSystem::DeleteFile(const Path& path) const {
-    LOG_WARNING(Service_FS, "(STUBBED) called");
-    // TODO(bunnei): Use correct error code
-    return ResultCode(-1);
+ResultCode Disk_FileSystem::DeleteFile(const std::string& path) const {
+    if (!FileUtil::Exists(path)) {
+        return ERROR_PATH_NOT_FOUND;
+    }
+
+    FileUtil::Delete(path);
+
+    return RESULT_SUCCESS;
 }
 
 ResultCode Disk_FileSystem::RenameFile(const Path& src_path, const Path& dest_path) const {

src/core/file_sys/disk_filesystem.h

@@ -25,7 +25,7 @@ public:
 
     ResultVal<std::unique_ptr<StorageBackend>> OpenFile(const std::string& path,
                                                         Mode mode) const override;
-    ResultCode DeleteFile(const Path& path) const override;
+    ResultCode DeleteFile(const std::string& path) const override;
     ResultCode RenameFile(const Path& src_path, const Path& dest_path) const override;
     ResultCode DeleteDirectory(const Path& path) const override;
     ResultCode DeleteDirectoryRecursively(const Path& path) const override;

src/core/file_sys/filesystem.h

@@ -97,7 +97,7 @@ public:
      * @param path Path relative to the archive
      * @return Result of the operation
      */
-    virtual ResultCode DeleteFile(const Path& path) const = 0;
+    virtual ResultCode DeleteFile(const std::string& path) const = 0;
 
     /**
      * Create a directory specified by its path

src/core/file_sys/romfs_filesystem.cpp

@@ -20,7 +20,7 @@ ResultVal<std::unique_ptr<StorageBackend>> RomFS_FileSystem::OpenFile(const std:
         std::make_unique<RomFS_Storage>(romfs_file, data_offset, data_size));
 }
 
-ResultCode RomFS_FileSystem::DeleteFile(const Path& path) const {
+ResultCode RomFS_FileSystem::DeleteFile(const std::string& path) const {
     LOG_CRITICAL(Service_FS, "Attempted to delete a file from an ROMFS archive (%s).",
                  GetName().c_str());
     // TODO(bunnei): Use correct error code

src/core/file_sys/romfs_filesystem.h

@@ -31,7 +31,7 @@ public:
 
     ResultVal<std::unique_ptr<StorageBackend>> OpenFile(const std::string& path,
                                                         Mode mode) const override;
-    ResultCode DeleteFile(const Path& path) const override;
+    ResultCode DeleteFile(const std::string& path) const override;
     ResultCode RenameFile(const Path& src_path, const Path& dest_path) const override;
     ResultCode DeleteDirectory(const Path& path) const override;
     ResultCode DeleteDirectoryRecursively(const Path& path) const override;

src/core/hle/kernel/vm_manager.cpp

@@ -380,7 +380,7 @@ void VMManager::UpdatePageTableForVMA(const VirtualMemoryArea& vma) {
 
 u64 VMManager::GetTotalMemoryUsage() {
     LOG_WARNING(Kernel, "(STUBBED) called");
-    return 0xBE000000;
+    return 0xF8000000;
 }
 
 u64 VMManager::GetTotalHeapUsage() {

src/core/hle/service/filesystem/fsp_srv.cpp

@@ -73,7 +73,7 @@ public:
         : ServiceFramework("IFile"), backend(std::move(backend)) {
         static const FunctionInfo functions[] = {
             {0, &IFile::Read, "Read"},       {1, &IFile::Write, "Write"},
-            {2, nullptr, "Flush"},           {3, &IFile::SetSize, "SetSize"},
+            {2, &IFile::Flush, "Flush"},     {3, &IFile::SetSize, "SetSize"},
             {4, &IFile::GetSize, "GetSize"}, {5, nullptr, "OperateRange"},
         };
         RegisterHandlers(functions);
@@ -152,6 +152,14 @@ private:
         rb.Push(RESULT_SUCCESS);
     }
 
+    void Flush(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_FS, "called");
+        backend->Flush();
+
+        IPC::ResponseBuilder rb{ctx, 2};
+        rb.Push(RESULT_SUCCESS);
+    }
+
     void SetSize(Kernel::HLERequestContext& ctx) {
         IPC::RequestParser rp{ctx};
         const u64 size = rp.Pop<u64>();
@@ -228,7 +236,7 @@ public:
         : ServiceFramework("IFileSystem"), backend(std::move(backend)) {
         static const FunctionInfo functions[] = {
             {0, &IFileSystem::CreateFile, "CreateFile"},
-            {1, nullptr, "DeleteFile"},
+            {1, &IFileSystem::DeleteFile, "DeleteFile"},
             {2, &IFileSystem::CreateDirectory, "CreateDirectory"},
             {3, nullptr, "DeleteDirectory"},
             {4, nullptr, "DeleteDirectoryRecursively"},
@@ -265,6 +273,20 @@ public:
         rb.Push(backend->CreateFile(name, size));
     }
 
+    void DeleteFile(Kernel::HLERequestContext& ctx) {
+        IPC::RequestParser rp{ctx};
+
+        auto file_buffer = ctx.ReadBuffer();
+        auto end = std::find(file_buffer.begin(), file_buffer.end(), '\0');
+
+        std::string name(file_buffer.begin(), end);
+
+        LOG_DEBUG(Service_FS, "called file %s", name.c_str());
+
+        IPC::ResponseBuilder rb{ctx, 2};
+        rb.Push(backend->DeleteFile(name));
+    }
+
     void CreateDirectory(Kernel::HLERequestContext& ctx) {
         IPC::RequestParser rp{ctx};
 

src/core/hle/service/ns/pl_u.cpp

@@ -47,10 +47,10 @@ PL_U::PL_U() : ServiceFramework("pl:u") {
     FileUtil::CreateFullPath(filepath); // Create path if not already created
     FileUtil::IOFile file(filepath, "rb");
 
+    shared_font = std::make_shared<std::vector<u8>>(SHARED_FONT_MEM_SIZE);
     if (file.IsOpen()) {
         // Read shared font data
         ASSERT(file.GetSize() == SHARED_FONT_MEM_SIZE);
-        shared_font = std::make_shared<std::vector<u8>>(static_cast<size_t>(file.GetSize()));
         file.ReadBytes(shared_font->data(), shared_font->size());
     } else {
         LOG_WARNING(Service_NS, "Unable to load shared font: %s", filepath.c_str());
@@ -97,22 +97,19 @@ void PL_U::GetSharedMemoryAddressOffset(Kernel::HLERequestContext& ctx) {
 }
 
 void PL_U::GetSharedMemoryNativeHandle(Kernel::HLERequestContext& ctx) {
-    if (shared_font != nullptr) {
-        // TODO(bunnei): This is a less-than-ideal solution to load a RAM dump of the Switch shared
-        // font data. This (likely) relies on exact address, size, and offsets from the original
-        // dump. In the future, we need to replace this with a more robust solution.
+    // TODO(bunnei): This is a less-than-ideal solution to load a RAM dump of the Switch shared
+    // font data. This (likely) relies on exact address, size, and offsets from the original
+    // dump. In the future, we need to replace this with a more robust solution.
 
-        // Map backing memory for the font data
-        Core::CurrentProcess()->vm_manager.MapMemoryBlock(SHARED_FONT_MEM_VADDR, shared_font, 0,
-                                                          SHARED_FONT_MEM_SIZE,
-                                                          Kernel::MemoryState::Shared);
+    // Map backing memory for the font data
+    Core::CurrentProcess()->vm_manager.MapMemoryBlock(
+        SHARED_FONT_MEM_VADDR, shared_font, 0, SHARED_FONT_MEM_SIZE, Kernel::MemoryState::Shared);
 
-        // Create shared font memory object
-        shared_font_mem = Kernel::SharedMemory::Create(
-            Core::CurrentProcess(), SHARED_FONT_MEM_SIZE, Kernel::MemoryPermission::ReadWrite,
-            Kernel::MemoryPermission::Read, SHARED_FONT_MEM_VADDR, Kernel::MemoryRegion::BASE,
-            "PL_U:shared_font_mem");
-    }
+    // Create shared font memory object
+    shared_font_mem = Kernel::SharedMemory::Create(
+        Core::CurrentProcess(), SHARED_FONT_MEM_SIZE, Kernel::MemoryPermission::ReadWrite,
+        Kernel::MemoryPermission::Read, SHARED_FONT_MEM_VADDR, Kernel::MemoryRegion::BASE,
+        "PL_U:shared_font_mem");
 
     LOG_DEBUG(Service_NS, "called");
     IPC::ResponseBuilder rb{ctx, 2, 1};

src/video_core/engines/maxwell_3d.cpp

@@ -301,5 +301,26 @@ u32 Maxwell3D::GetRegisterValue(u32 method) const {
     return regs.reg_array[method];
 }
 
+bool Maxwell3D::IsShaderStageEnabled(Regs::ShaderStage stage) const {
+    // The Vertex stage is always enabled.
+    if (stage == Regs::ShaderStage::Vertex)
+        return true;
+
+    switch (stage) {
+    case Regs::ShaderStage::TesselationControl:
+        return regs.shader_config[static_cast<size_t>(Regs::ShaderProgram::TesselationControl)]
+                   .enable != 0;
+    case Regs::ShaderStage::TesselationEval:
+        return regs.shader_config[static_cast<size_t>(Regs::ShaderProgram::TesselationEval)]
+                   .enable != 0;
+    case Regs::ShaderStage::Geometry:
+        return regs.shader_config[static_cast<size_t>(Regs::ShaderProgram::Geometry)].enable != 0;
+    case Regs::ShaderStage::Fragment:
+        return regs.shader_config[static_cast<size_t>(Regs::ShaderProgram::Fragment)].enable != 0;
+    }
+
+    UNREACHABLE();
+}
+
 } // namespace Engines
 } // namespace Tegra

src/video_core/engines/maxwell_3d.h

@@ -518,6 +518,9 @@ public:
     /// Returns a list of enabled textures for the specified shader stage.
     std::vector<Texture::FullTextureInfo> GetStageTextures(Regs::ShaderStage stage) const;
 
+    /// Returns whether the specified shader stage is enabled or not.
+    bool IsShaderStageEnabled(Regs::ShaderStage stage) const;
+
 private:
     std::unordered_map<u32, std::vector<u32>> uploaded_macros;
 

src/video_core/renderer_opengl/gl_rasterizer.cpp

@@ -46,6 +46,14 @@ RasterizerOpenGL::RasterizerOpenGL() {
         state.texture_units[i].sampler = texture_samplers[i].sampler.handle;
     }
 
+    // Create SSBOs
+    for (size_t stage = 0; stage < ssbos.size(); ++stage) {
+        for (size_t buffer = 0; buffer < ssbos[stage].size(); ++buffer) {
+            ssbos[stage][buffer].Create();
+            state.draw.const_buffers[stage][buffer].ssbo = ssbos[stage][buffer].handle;
+        }
+    }
+
     GLint ext_num;
     glGetIntegerv(GL_NUM_EXTENSIONS, &ext_num);
     for (GLint i = 0; i < ext_num; i++) {
@@ -185,14 +193,18 @@ void RasterizerOpenGL::SetupShaders(u8* buffer_ptr, GLintptr buffer_offset, size
     auto& gpu = Core::System().GetInstance().GPU().Maxwell3D();
     ASSERT_MSG(!gpu.regs.shader_config[0].enable, "VertexA is unsupported!");
 
+    // Next available bindpoint to use when uploading the const buffers to the GLSL shaders.
+    u32 current_constbuffer_bindpoint = 0;
+
     for (unsigned index = 1; index < Maxwell::MaxShaderProgram; ++index) {
         ptr_pos += sizeof(GLShader::MaxwellUniformData);
 
         auto& shader_config = gpu.regs.shader_config[index];
         const Maxwell::ShaderProgram program{static_cast<Maxwell::ShaderProgram>(index)};
 
-        // VertexB program is always enabled, despite bit setting
-        const bool is_enabled{shader_config.enable || program == Maxwell::ShaderProgram::VertexB};
+        const auto& stage = index - 1; // Stage indices are 0 - 5
+
+        const bool is_enabled = gpu.IsShaderStageEnabled(static_cast<Maxwell::ShaderStage>(stage));
 
         // Skip stages that are not enabled
         if (!is_enabled) {
@@ -200,7 +212,6 @@ void RasterizerOpenGL::SetupShaders(u8* buffer_ptr, GLintptr buffer_offset, size
         }
 
         // Upload uniform data as one UBO per stage
-        const auto& stage = index - 1; // Stage indices are 0 - 5
         const GLintptr ubo_offset = buffer_offset + static_cast<GLintptr>(ptr_pos);
         copy_buffer(uniform_buffers[stage].handle, ubo_offset,
                     sizeof(GLShader::MaxwellUniformData));
@@ -215,15 +226,19 @@ void RasterizerOpenGL::SetupShaders(u8* buffer_ptr, GLintptr buffer_offset, size
         Memory::ReadBlock(cpu_address, program_code.data(), program_code.size() * sizeof(u64));
         GLShader::ShaderSetup setup{std::move(program_code)};
 
+        GLShader::ShaderEntries shader_resources;
+
         switch (program) {
         case Maxwell::ShaderProgram::VertexB: {
             GLShader::MaxwellVSConfig vs_config{setup};
-            shader_program_manager->UseProgrammableVertexShader(vs_config, setup);
+            shader_resources =
+                shader_program_manager->UseProgrammableVertexShader(vs_config, setup);
             break;
         }
         case Maxwell::ShaderProgram::Fragment: {
             GLShader::MaxwellFSConfig fs_config{setup};
-            shader_program_manager->UseProgrammableFragmentShader(fs_config, setup);
+            shader_resources =
+                shader_program_manager->UseProgrammableFragmentShader(fs_config, setup);
             break;
         }
         default:
@@ -231,6 +246,14 @@ void RasterizerOpenGL::SetupShaders(u8* buffer_ptr, GLintptr buffer_offset, size
                          shader_config.enable.Value(), shader_config.offset);
             UNREACHABLE();
         }
+
+        GLuint gl_stage_program = shader_program_manager->GetCurrentProgramStage(
+            static_cast<Maxwell::ShaderStage>(stage));
+
+        // Configure the const buffers for this shader stage.
+        current_constbuffer_bindpoint =
+            SetupConstBuffers(static_cast<Maxwell::ShaderStage>(stage), gl_stage_program,
+                              current_constbuffer_bindpoint, shader_resources.const_buffer_entries);
     }
 
     shader_program_manager->UseTrivialGeometryShader();
@@ -380,7 +403,7 @@ void RasterizerOpenGL::DrawArrays() {
 
 void RasterizerOpenGL::BindTextures() {
     using Regs = Tegra::Engines::Maxwell3D::Regs;
-    auto maxwell3d = Core::System::GetInstance().GPU().Get3DEngine();
+    auto& maxwell3d = Core::System::GetInstance().GPU().Get3DEngine();
 
     // Each Maxwell shader stage can have an arbitrary number of textures, but we're limited to a
     // certain number in OpenGL. We try to only use the minimum amount of host textures by not
@@ -527,6 +550,55 @@ void RasterizerOpenGL::SamplerInfo::SyncWithConfig(const Tegra::Texture::TSCEntr
     }
 }
 
+u32 RasterizerOpenGL::SetupConstBuffers(Maxwell::ShaderStage stage, GLuint program,
+                                        u32 current_bindpoint,
+                                        const std::vector<GLShader::ConstBufferEntry>& entries) {
+    auto& gpu = Core::System::GetInstance().GPU();
+    auto& maxwell3d = gpu.Get3DEngine();
+
+    ASSERT_MSG(maxwell3d.IsShaderStageEnabled(stage),
+               "Attempted to upload constbuffer of disabled shader stage");
+
+    // Reset all buffer draw state for this stage.
+    for (auto& buffer : state.draw.const_buffers[static_cast<size_t>(stage)]) {
+        buffer.bindpoint = 0;
+        buffer.enabled = false;
+    }
+
+    // Upload only the enabled buffers from the 16 constbuffers of each shader stage
+    auto& shader_stage = maxwell3d.state.shader_stages[static_cast<size_t>(stage)];
+
+    for (u32 bindpoint = 0; bindpoint < entries.size(); ++bindpoint) {
+        const auto& used_buffer = entries[bindpoint];
+        const auto& buffer = shader_stage.const_buffers[used_buffer.GetIndex()];
+        auto& buffer_draw_state =
+            state.draw.const_buffers[static_cast<size_t>(stage)][used_buffer.GetIndex()];
+
+        ASSERT_MSG(buffer.enabled, "Attempted to upload disabled constbuffer");
+        buffer_draw_state.enabled = true;
+        buffer_draw_state.bindpoint = current_bindpoint + bindpoint;
+
+        VAddr addr = gpu.memory_manager->PhysicalToVirtualAddress(buffer.address);
+        std::vector<u8> data(used_buffer.GetSize() * sizeof(float));
+        Memory::ReadBlock(addr, data.data(), data.size());
+
+        glBindBuffer(GL_SHADER_STORAGE_BUFFER, buffer_draw_state.ssbo);
+        glBufferData(GL_SHADER_STORAGE_BUFFER, data.size(), data.data(), GL_DYNAMIC_DRAW);
+        glBindBuffer(GL_SHADER_STORAGE_BUFFER, 0);
+
+        // Now configure the bindpoint of the buffer inside the shader
+        std::string buffer_name = used_buffer.GetName();
+        GLuint index =
+            glGetProgramResourceIndex(program, GL_SHADER_STORAGE_BLOCK, buffer_name.c_str());
+        if (index != -1)
+            glShaderStorageBlockBinding(program, index, buffer_draw_state.bindpoint);
+    }
+
+    state.Apply();
+
+    return current_bindpoint + entries.size();
+}
+
 void RasterizerOpenGL::BindFramebufferSurfaces(const Surface& color_surface,
                                                const Surface& depth_surface, bool has_stencil) {
     state.draw.draw_framebuffer = framebuffer.handle;

src/video_core/renderer_opengl/gl_rasterizer.h

@@ -87,6 +87,18 @@ private:
     /// Binds the required textures to OpenGL before drawing a batch.
     void BindTextures();
 
+    /*
+     * Configures the current constbuffers to use for the draw command.
+     * @param stage The shader stage to configure buffers for.
+     * @param program The OpenGL program object that contains the specified stage.
+     * @param current_bindpoint The offset at which to start counting new buffer bindpoints.
+     * @param entries Vector describing the buffers that are actually used in the guest shader.
+     * @returns The next available bindpoint for use in the next shader stage.
+     */
+    u32 SetupConstBuffers(Tegra::Engines::Maxwell3D::Regs::ShaderStage stage, GLuint program,
+                          u32 current_bindpoint,
+                          const std::vector<GLShader::ConstBufferEntry>& entries);
+
     /// Syncs the viewport to match the guest state
     void SyncViewport(const MathUtil::Rectangle<u32>& surfaces_rect, u16 res_scale);
 
@@ -129,6 +141,10 @@ private:
     std::array<bool, 16> hw_vao_enabled_attributes;
 
     std::array<SamplerInfo, GLShader::NumTextureSamplers> texture_samplers;
+    std::array<std::array<OGLBuffer, Tegra::Engines::Maxwell3D::Regs::MaxConstBuffers>,
+               Tegra::Engines::Maxwell3D::Regs::MaxShaderStage>
+        ssbos;
+
     static constexpr size_t VERTEX_BUFFER_SIZE = 128 * 1024 * 1024;
     std::unique_ptr<OGLStreamBuffer> vertex_buffer;
     OGLBuffer uniform_buffer;

src/video_core/renderer_opengl/gl_shader_decompiler.cpp

@@ -140,6 +140,11 @@ public:
         return declarations.GetResult() + shader.GetResult();
     }
 
+    /// Returns entries in the shader that are useful for external functions
+    ShaderEntries GetEntries() const {
+        return {GetConstBuffersDeclarations()};
+    }
+
 private:
     /// Gets the Subroutine object corresponding to the specified address.
     const Subroutine& GetSubroutine(u32 begin, u32 end) const {
@@ -186,10 +191,9 @@ private:
     }
 
     /// Generates code representing a uniform (C buffer) register.
-    std::string GetUniform(const Uniform& reg) const {
-        std::string index = std::to_string(reg.index);
-        return "uniform_" + index + "[" + std::to_string(reg.offset >> 2) + "][" +
-               std::to_string(reg.offset & 3) + "]";
+    std::string GetUniform(const Uniform& reg) {
+        declr_const_buffers[reg.index].MarkAsUsed(reg.index, reg.offset, stage);
+        return 'c' + std::to_string(reg.index) + '[' + std::to_string(reg.offset) + ']';
     }
 
     /**
@@ -439,6 +443,14 @@ private:
         GenerateDeclarations();
     }
 
+    /// Returns a list of constant buffer declarations
+    std::vector<ConstBufferEntry> GetConstBuffersDeclarations() const {
+        std::vector<ConstBufferEntry> result;
+        std::copy_if(declr_const_buffers.begin(), declr_const_buffers.end(),
+                     std::back_inserter(result), [](const auto& entry) { return entry.IsUsed(); });
+        return result;
+    }
+
     /// Add declarations for registers
     void GenerateDeclarations() {
         for (const auto& reg : declr_register) {
@@ -463,6 +475,16 @@ private:
                                  ") out vec4 " + GetOutputAttribute(index) + ";");
         }
         declarations.AddLine("");
+
+        unsigned const_buffer_layout = 0;
+        for (const auto& entry : GetConstBuffersDeclarations()) {
+            declarations.AddLine("layout(std430) buffer " + entry.GetName());
+            declarations.AddLine("{");
+            declarations.AddLine("    float c" + std::to_string(entry.GetIndex()) + "[];");
+            declarations.AddLine("};");
+            declarations.AddLine("");
+            ++const_buffer_layout;
+        }
     }
 
 private:
@@ -478,18 +500,19 @@ private:
     std::set<std::string> declr_register;
     std::set<Attribute::Index> declr_input_attribute;
     std::set<Attribute::Index> declr_output_attribute;
-}; // namespace Decompiler
+    std::array<ConstBufferEntry, Maxwell3D::Regs::MaxConstBuffers> declr_const_buffers;
+};
 
 std::string GetCommonDeclarations() {
     return "bool exec_shader();";
 }
 
-boost::optional<std::string> DecompileProgram(const ProgramCode& program_code, u32 main_offset,
-                                              Maxwell3D::Regs::ShaderStage stage) {
+boost::optional<ProgramResult> DecompileProgram(const ProgramCode& program_code, u32 main_offset,
+                                                Maxwell3D::Regs::ShaderStage stage) {
     try {
         auto subroutines = ControlFlowAnalyzer(program_code, main_offset).GetSubroutines();
         GLSLGenerator generator(subroutines, program_code, main_offset, stage);
-        return generator.GetShaderCode();
+        return ProgramResult{generator.GetShaderCode(), generator.GetEntries()};
     } catch (const DecompileFail& exception) {
         LOG_ERROR(HW_GPU, "Shader decompilation failed: %s", exception.what());
     }

src/video_core/renderer_opengl/gl_shader_decompiler.h

@@ -17,8 +17,8 @@ using Tegra::Engines::Maxwell3D;
 
 std::string GetCommonDeclarations();
 
-boost::optional<std::string> DecompileProgram(const ProgramCode& program_code, u32 main_offset,
-                                              Maxwell3D::Regs::ShaderStage stage);
+boost::optional<ProgramResult> DecompileProgram(const ProgramCode& program_code, u32 main_offset,
+                                                Maxwell3D::Regs::ShaderStage stage);
 
 } // namespace Decompiler
 } // namespace GLShader

src/video_core/renderer_opengl/gl_shader_gen.cpp

@@ -3,18 +3,60 @@
 // Refer to the license.txt file included.
 
 #include "common/assert.h"
+#include "video_core/engines/maxwell_3d.h"
+#include "video_core/renderer_opengl/gl_shader_decompiler.h"
 #include "video_core/renderer_opengl/gl_shader_gen.h"
 
 namespace GLShader {
 
-std::string GenerateVertexShader(const ShaderSetup& setup, const MaxwellVSConfig& config) {
-    UNREACHABLE();
-    return {};
+using Tegra::Engines::Maxwell3D;
+
+static constexpr u32 PROGRAM_OFFSET{10};
+
+ProgramResult GenerateVertexShader(const ShaderSetup& setup, const MaxwellVSConfig& config) {
+    std::string out = "#version 430 core\n";
+    out += "#extension GL_ARB_separate_shader_objects : enable\n\n";
+    out += Decompiler::GetCommonDeclarations();
+
+    ProgramResult program = Decompiler::DecompileProgram(setup.program_code, PROGRAM_OFFSET,
+                                                         Maxwell3D::Regs::ShaderStage::Vertex)
+                                .get_value_or({});
+    out += R"(
+
+out gl_PerVertex {
+    vec4 gl_Position;
+};
+
+void main() {
+    exec_shader();
 }
 
-std::string GenerateFragmentShader(const ShaderSetup& setup, const MaxwellFSConfig& config) {
-    UNREACHABLE();
-    return {};
+)";
+    out += program.first;
+    return {out, program.second};
+}
+
+ProgramResult GenerateFragmentShader(const ShaderSetup& setup, const MaxwellFSConfig& config) {
+    std::string out = "#version 430 core\n";
+    out += "#extension GL_ARB_separate_shader_objects : enable\n\n";
+    out += Decompiler::GetCommonDeclarations();
+
+    ProgramResult program = Decompiler::DecompileProgram(setup.program_code, PROGRAM_OFFSET,
+                                                         Maxwell3D::Regs::ShaderStage::Fragment)
+                                .get_value_or({});
+    out += R"(
+
+out vec4 color;
+
+uniform sampler2D tex[32];
+
+void main() {
+    exec_shader();
+}
+
+)";
+    out += program.first;
+    return {out, program.second};
 }
 
 } // namespace GLShader

src/video_core/renderer_opengl/gl_shader_gen.h

@@ -7,6 +7,8 @@
 #include <array>
 #include <string>
 #include <type_traits>
+#include <utility>
+#include <vector>
 #include "common/common_types.h"
 #include "common/hash.h"
 
@@ -16,6 +18,50 @@ constexpr size_t MAX_PROGRAM_CODE_LENGTH{0x1000};
 
 using ProgramCode = std::array<u64, MAX_PROGRAM_CODE_LENGTH>;
 
+class ConstBufferEntry {
+    using Maxwell = Tegra::Engines::Maxwell3D::Regs;
+
+public:
+    void MarkAsUsed(unsigned index, unsigned offset, Maxwell::ShaderStage stage) {
+        is_used = true;
+        this->index = index;
+        this->stage = stage;
+        max_offset = std::max(max_offset, offset);
+    }
+
+    bool IsUsed() const {
+        return is_used;
+    }
+
+    unsigned GetIndex() const {
+        return index;
+    }
+
+    unsigned GetSize() const {
+        return max_offset + 1;
+    }
+
+    std::string GetName() const {
+        return BufferBaseNames[static_cast<size_t>(stage)] + std::to_string(index);
+    }
+
+private:
+    static constexpr std::array<const char*, Maxwell::MaxShaderStage> BufferBaseNames = {
+        "buffer_vs_c", "buffer_tessc_c", "buffer_tesse_c", "buffer_gs_c", "buffer_fs_c",
+    };
+
+    bool is_used{};
+    unsigned index{};
+    unsigned max_offset{};
+    Maxwell::ShaderStage stage;
+};
+
+struct ShaderEntries {
+    std::vector<ConstBufferEntry> const_buffer_entries;
+};
+
+using ProgramResult = std::pair<std::string, ShaderEntries>;
+
 struct ShaderSetup {
     ShaderSetup(ProgramCode&& program_code) : program_code(std::move(program_code)) {}
 
@@ -58,13 +104,13 @@ struct MaxwellFSConfig : Common::HashableStruct<MaxwellShaderConfigCommon> {
  * Generates the GLSL vertex shader program source code for the given VS program
  * @returns String of the shader source code
  */
-std::string GenerateVertexShader(const ShaderSetup& setup, const MaxwellVSConfig& config);
+ProgramResult GenerateVertexShader(const ShaderSetup& setup, const MaxwellVSConfig& config);
 
 /**
  * Generates the GLSL fragment shader program source code for the given FS program
  * @returns String of the shader source code
  */
-std::string GenerateFragmentShader(const ShaderSetup& setup, const MaxwellFSConfig& config);
+ProgramResult GenerateFragmentShader(const ShaderSetup& setup, const MaxwellFSConfig& config);
 
 } // namespace GLShader
 

src/video_core/renderer_opengl/gl_shader_manager.cpp

@@ -53,13 +53,6 @@ void SetShaderSamplerBindings(GLuint shader) {
 
 } // namespace Impl
 
-void MaxwellUniformData::SetFromRegs(const Maxwell3D::State::ShaderStageInfo& shader_stage) {
-    const auto& memory_manager = Core::System().GetInstance().GPU().memory_manager;
-    for (unsigned index = 0; index < shader_stage.const_buffers.size(); ++index) {
-        const auto& const_buffer = shader_stage.const_buffers[index];
-        const VAddr vaddr = memory_manager->PhysicalToVirtualAddress(const_buffer.address);
-        Memory::ReadBlock(vaddr, const_buffers[index].data(), sizeof(ConstBuffer));
-    }
-}
+void MaxwellUniformData::SetFromRegs(const Maxwell3D::State::ShaderStageInfo& shader_stage) {}
 
 } // namespace GLShader

src/video_core/renderer_opengl/gl_shader_manager.h

@@ -30,11 +30,10 @@ void SetShaderSamplerBindings(GLuint shader);
 //       Not following that rule will cause problems on some AMD drivers.
 struct MaxwellUniformData {
     void SetFromRegs(const Maxwell3D::State::ShaderStageInfo& shader_stage);
-
-    using ConstBuffer = std::array<GLvec4, 4>;
-    alignas(16) std::array<ConstBuffer, Maxwell3D::Regs::MaxConstBuffers> const_buffers;
+    // TODO(Subv): Use this for something.
 };
-static_assert(sizeof(MaxwellUniformData) == 1024, "MaxwellUniformData structure size is incorrect");
+// static_assert(sizeof(MaxwellUniformData) == 1024, "MaxwellUniformData structure size is
+// incorrect");
 static_assert(sizeof(MaxwellUniformData) < 16384,
               "MaxwellUniformData structure must be less than 16kb as per the OpenGL spec");
 
@@ -42,19 +41,25 @@ class OGLShaderStage {
 public:
     OGLShaderStage() = default;
 
-    void Create(const char* source, GLenum type) {
+    void Create(const ProgramResult& program_result, GLenum type) {
         OGLShader shader;
-        shader.Create(source, type);
+        shader.Create(program_result.first.c_str(), type);
         program.Create(true, shader.handle);
         Impl::SetShaderUniformBlockBindings(program.handle);
         Impl::SetShaderSamplerBindings(program.handle);
+        entries = program_result.second;
     }
     GLuint GetHandle() const {
         return program.handle;
     }
 
+    ShaderEntries GetEntries() const {
+        return entries;
+    }
+
 private:
     OGLProgram program;
+    ShaderEntries entries;
 };
 
 // TODO(wwylele): beautify this doc
@@ -62,25 +67,28 @@ private:
 // The double cache is needed because diffent KeyConfigType, which includes a hash of the code
 // region (including its leftover unused code) can generate the same GLSL code.
 template <typename KeyConfigType,
-          std::string (*CodeGenerator)(const ShaderSetup&, const KeyConfigType&), GLenum ShaderType>
+          ProgramResult (*CodeGenerator)(const ShaderSetup&, const KeyConfigType&),
+          GLenum ShaderType>
 class ShaderCache {
 public:
     ShaderCache() = default;
 
-    GLuint Get(const KeyConfigType& key, const ShaderSetup& setup) {
+    using Result = std::pair<GLuint, ShaderEntries>;
+
+    Result Get(const KeyConfigType& key, const ShaderSetup& setup) {
         auto map_it = shader_map.find(key);
         if (map_it == shader_map.end()) {
-            std::string program = CodeGenerator(setup, key);
+            ProgramResult program = CodeGenerator(setup, key);
 
-            auto [iter, new_shader] = shader_cache.emplace(program, OGLShaderStage{});
+            auto [iter, new_shader] = shader_cache.emplace(program.first, OGLShaderStage{});
             OGLShaderStage& cached_shader = iter->second;
             if (new_shader) {
-                cached_shader.Create(program.c_str(), ShaderType);
+                cached_shader.Create(program, ShaderType);
             }
             shader_map[key] = &cached_shader;
-            return cached_shader.GetHandle();
+            return {cached_shader.GetHandle(), program.second};
         } else {
-            return map_it->second->GetHandle();
+            return {map_it->second->GetHandle(), map_it->second->GetEntries()};
         }
     }
 
@@ -99,12 +107,29 @@ public:
         pipeline.Create();
     }
 
-    void UseProgrammableVertexShader(const MaxwellVSConfig& config, const ShaderSetup setup) {
-        current.vs = vertex_shaders.Get(config, setup);
+    ShaderEntries UseProgrammableVertexShader(const MaxwellVSConfig& config,
+                                              const ShaderSetup setup) {
+        ShaderEntries result;
+        std::tie(current.vs, result) = vertex_shaders.Get(config, setup);
+        return result;
     }
 
-    void UseProgrammableFragmentShader(const MaxwellFSConfig& config, const ShaderSetup setup) {
-        current.fs = fragment_shaders.Get(config, setup);
+    ShaderEntries UseProgrammableFragmentShader(const MaxwellFSConfig& config,
+                                                const ShaderSetup setup) {
+        ShaderEntries result;
+        std::tie(current.fs, result) = fragment_shaders.Get(config, setup);
+        return result;
+    }
+
+    GLuint GetCurrentProgramStage(Maxwell3D::Regs::ShaderStage stage) {
+        switch (stage) {
+        case Maxwell3D::Regs::ShaderStage::Vertex:
+            return current.vs;
+        case Maxwell3D::Regs::ShaderStage::Fragment:
+            return current.fs;
+        }
+
+        UNREACHABLE();
     }
 
     void UseTrivialGeometryShader() {

src/video_core/renderer_opengl/gl_state.cpp

@@ -202,6 +202,20 @@ void OpenGLState::Apply() const {
         }
     }
 
+    // Constbuffers
+    for (u32 stage = 0; stage < draw.const_buffers.size(); ++stage) {
+        for (u32 buffer_id = 0; buffer_id < draw.const_buffers[stage].size(); ++buffer_id) {
+            auto& current = cur_state.draw.const_buffers[stage][buffer_id];
+            auto& new_state = draw.const_buffers[stage][buffer_id];
+            if (current.enabled != new_state.enabled || current.bindpoint != new_state.bindpoint ||
+                current.ssbo != new_state.ssbo) {
+                if (new_state.enabled) {
+                    glBindBufferBase(GL_SHADER_STORAGE_BUFFER, new_state.bindpoint, new_state.ssbo);
+                }
+            }
+        }
+    }
+
     // Lighting LUTs
     if (lighting_lut.texture_buffer != cur_state.lighting_lut.texture_buffer) {
         glActiveTexture(TextureUnits::LightingLUT.Enum());

src/video_core/renderer_opengl/gl_state.h

@@ -123,6 +123,12 @@ public:
         GLuint uniform_buffer;   // GL_UNIFORM_BUFFER_BINDING
         GLuint shader_program;   // GL_CURRENT_PROGRAM
         GLuint program_pipeline; // GL_PROGRAM_PIPELINE_BINDING
+        struct ConstBufferConfig {
+            bool enabled = false;
+            GLuint bindpoint;
+            GLuint ssbo;
+        };
+        std::array<std::array<ConstBufferConfig, 16>, 5> const_buffers{};
     } draw;
 
     struct {

src/video_core/renderer_opengl/maxwell_to_gl.h

@@ -72,8 +72,15 @@ inline GLenum TextureFilterMode(Tegra::Texture::TextureFilter filter_mode) {
 
 inline GLenum WrapMode(Tegra::Texture::WrapMode wrap_mode) {
     switch (wrap_mode) {
+    case Tegra::Texture::WrapMode::Wrap:
+        return GL_REPEAT;
     case Tegra::Texture::WrapMode::ClampToEdge:
         return GL_CLAMP_TO_EDGE;
+    case Tegra::Texture::WrapMode::ClampOGL:
+        // TODO(Subv): GL_CLAMP was removed as of OpenGL 3.1, to implement GL_CLAMP, we can use
+        // GL_CLAMP_TO_BORDER to get the border color of the texture, and then sample the edge to
+        // manually mix them. However the shader part of this is not yet implemented.
+        return GL_CLAMP_TO_BORDER;
     }
     LOG_CRITICAL(Render_OpenGL, "Unimplemented texture wrap mode=%u", static_cast<u32>(wrap_mode));
     UNREACHABLE();

src/yuzu/main.cpp

@@ -776,9 +776,11 @@ void GMainWindow::closeEvent(QCloseEvent* event) {
         return;
     }
 
-    UISettings::values.geometry = saveGeometry();
+    if (ui.action_Fullscreen->isChecked()) {
+        UISettings::values.geometry = saveGeometry();
+        UISettings::values.renderwindow_geometry = render_window->saveGeometry();
+    }
     UISettings::values.state = saveState();
-    UISettings::values.renderwindow_geometry = render_window->saveGeometry();
 #if MICROPROFILE_ENABLED
     UISettings::values.microprofile_geometry = microProfileDialog->saveGeometry();
     UISettings::values.microprofile_visible = microProfileDialog->isVisible();