summaryrefslogtreecommitdiffstats
path: root/src/video_core/guest_driver.h
blob: 21e569ba1f981f182f9d25f294bc57b5f52e79b0 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
// Copyright 2020 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.

#pragma once

#include <optional>
#include <vector>

#include "common/common_types.h"

namespace VideoCore {

/**
 * The GuestDriverProfile class is used to learn about the GPU drivers behavior and collect
 * information necessary for impossible to avoid HLE methods like shader tracks as they are
 * Entscheidungsproblems.
 */
class GuestDriverProfile {
public:
    explicit GuestDriverProfile() = default;
    explicit GuestDriverProfile(std::optional<u32> texture_handler_size_)
        : texture_handler_size{texture_handler_size_} {}

    void DeduceTextureHandlerSize(std::vector<u32> bound_offsets);

    u32 GetTextureHandlerSize() const {
        return texture_handler_size.value_or(default_texture_handler_size);
    }

    bool IsTextureHandlerSizeKnown() const {
        return texture_handler_size.has_value();
    }

private:
    // Minimum size of texture handler any driver can use.
    static constexpr u32 min_texture_handler_size = 4;

    // This goes with Vulkan and OpenGL standards but Nvidia GPUs can easily use 4 bytes instead.
    // Thus, certain drivers may squish the size.
    static constexpr u32 default_texture_handler_size = 8;

    std::optional<u32> texture_handler_size = default_texture_handler_size;
};

} // namespace VideoCore