summaryrefslogtreecommitdiffstats
path: root/src/RenderConfigs.cpp
blob: d62d2040e519bec9b96d93e093c03a7ed30aaee1 (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
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
#include "RenderConfigs.hpp"

#include "AssetManager.hpp"

std::string LoadShaderCode(std::string_view assetPath) {
    auto gal = Gal::GetImplementation();
    auto codeAsset = AssetManager::GetAssetByAssetName(std::string(assetPath));
    auto codePtr = reinterpret_cast<const char*>(codeAsset->data.data());
    return std::string(codePtr, codePtr + codeAsset->data.size());
}

std::shared_ptr<Gal::Shader> LoadVertexShader(std::string_view assetPath) {
    auto gal = Gal::GetImplementation();
    return gal->LoadVertexShader(LoadShaderCode(assetPath));
}

std::shared_ptr<Gal::Shader> LoadPixelShader(std::string_view assetPath) {
    auto gal = Gal::GetImplementation();
    return gal->LoadPixelShader(LoadShaderCode(assetPath));
}

PostProcess::PostProcess(
    std::shared_ptr<Gal::Shader> pixelShader,
    std::vector<std::pair<std::string_view, std::shared_ptr<Gal::Texture>>> inputTextures,
    std::vector<std::pair<std::string_view, Gal::Type>> inputParameters,
    size_t width,
    size_t height,
    Gal::Format format,
    Gal::Filtering filtering) {
    auto gal = Gal::GetImplementation();

    auto texConf = gal->CreateTexture2DConfig(width, height, format);
    texConf->SetMinFilter(filtering);
    texConf->SetMaxFilter(filtering);

    result = gal->BuildTexture(texConf);

    auto fbConf = gal->CreateFramebufferConfig();
    fbConf->SetTexture(0, result);

    framebuffer = gal->BuildFramebuffer(fbConf);
    framebuffer->SetViewport(0, 0, width, height);

    auto fbPPC = gal->CreatePipelineConfig();
    fbPPC->SetTarget(framebuffer);
    for (auto&& [name, texture] : inputTextures) {
        fbPPC->AddStaticTexture(name, texture);
    }
    for (auto&& [name, type] : inputParameters) {
        fbPPC->AddShaderParameter(name, type);
    }
    fbPPC->SetVertexShader(LoadVertexShader("/altcraft/shaders/vert/pp"));
    fbPPC->SetPixelShader(pixelShader);
    auto fbBufferBB = fbPPC->BindVertexBuffer({
        {"pos", Gal::Type::Vec2},
        {"uvPos", Gal::Type::Vec2}
        });

    pipeline = gal->BuildPipeline(fbPPC);

    fbBuffer = gal->CreateBuffer();
    constexpr float quadVertices[] = {
        // pos         // uv
        -1.0f,  1.0f,  0.0f, 1.0f,
        -1.0f, -1.0f,  0.0f, 0.0f,
         1.0f, -1.0f,  1.0f, 0.0f,

        -1.0f,  1.0f,  0.0f, 1.0f,
         1.0f, -1.0f,  1.0f, 0.0f,
         1.0f,  1.0f,  1.0f, 1.0f
    };
    auto quadPtr = reinterpret_cast<const std::byte*>(quadVertices);
    fbBuffer->SetData({ quadPtr, quadPtr + sizeof(quadVertices) });

    pipelineInstance = pipeline->CreateInstance({
        {fbBufferBB, fbBuffer}
        });
}

Gbuffer::Gbuffer(size_t geomW, size_t geomH, size_t lightW, size_t lightH) {
    auto gal = Gal::GetImplementation();

    auto colorConf = gal->CreateTexture2DConfig(geomW, geomH, Gal::Format::R8G8B8);
    colorConf->SetMinFilter(Gal::Filtering::Bilinear);
    colorConf->SetMaxFilter(Gal::Filtering::Bilinear);
    color = gal->BuildTexture(colorConf);

    auto normalConf = gal->CreateTexture2DConfig(geomW, geomH, Gal::Format::R8G8B8);
    normalConf->SetMinFilter(Gal::Filtering::Bilinear);
    normalConf->SetMaxFilter(Gal::Filtering::Bilinear);
    normal = gal->BuildTexture(normalConf);

    auto addColorConf = gal->CreateTexture2DConfig(geomW, geomH, Gal::Format::R8G8B8);
    addColorConf->SetMinFilter(Gal::Filtering::Bilinear);
    addColorConf->SetMaxFilter(Gal::Filtering::Bilinear);
    addColor = gal->BuildTexture(addColorConf);

    auto lightConf = gal->CreateTexture2DConfig(geomW, geomH, Gal::Format::R8G8B8);
    lightConf->SetMinFilter(Gal::Filtering::Bilinear);
    lightConf->SetMaxFilter(Gal::Filtering::Bilinear);
    light = gal->BuildTexture(lightConf);

    auto dsConf = gal->CreateTexture2DConfig(geomW, geomH, Gal::Format::D24S8);
    dsConf->SetMinFilter(Gal::Filtering::Bilinear);
    dsConf->SetMaxFilter(Gal::Filtering::Bilinear);
    depthStencil = gal->BuildTexture(dsConf);

    auto geomFbConf = gal->CreateFramebufferConfig();
    geomFbConf->SetTexture(0, color);
    geomFbConf->SetTexture(1, normal);
    geomFbConf->SetTexture(2, addColor);
    geomFbConf->SetTexture(3, light);
    geomFbConf->SetDepthStencil(depthStencil);

    geomFramebuffer = gal->BuildFramebuffer(geomFbConf);
    geomFramebuffer->SetViewport(0, 0, geomW, geomH);

    std::vector<std::pair<std::string_view, std::shared_ptr<Gal::Texture>>> lightingTexture = {
        {"color", color},
        {"addColor", addColor},
        {"normal", normal},
        {"light", light},
        {"depthStencil", depthStencil},
    };

    std::vector<std::pair<std::string_view, Gal::Type>> lightingParameters = {
        {"dayTime", Gal::Type::Float},
        {"renderBuff", Gal::Type::Int32},
    };

    lightingPass = std::make_unique<PostProcess>(LoadPixelShader("/altcraft/shaders/frag/light"),
        lightingTexture, 
        lightingParameters,
        lightW,
        lightH,
        Gal::Format::R8G8B8A8,
        Gal::Filtering::Bilinear);
}