metaforce/aurora/lib/gfx/movie_player/shader.cpp

246 lines
7.9 KiB
C++

#include "shader.hpp"
#include "../../gpu.hpp"
namespace aurora::gfx::movie_player {
using gpu::g_device;
using gpu::g_graphicsConfig;
using gpu::utils::make_vertex_attributes;
using gpu::utils::make_vertex_buffer_layout;
using gpu::utils::make_vertex_state;
State construct_state() {
wgpu::ShaderModuleWGSLDescriptor wgslDescriptor{};
wgslDescriptor.source = R"""(
@group(0) @binding(0)
var tex_sampler: sampler;
@group(1) @binding(0)
var tex_y: texture_2d<f32>;
@group(1) @binding(1)
var tex_u: texture_2d<f32>;
@group(1) @binding(2)
var tex_v: texture_2d<f32>;
struct VertexOutput {
@builtin(position) pos: vec4<f32>;
@location(0) uv: vec2<f32>;
};
@stage(vertex)
fn vs_main(@location(0) in_pos: vec3<f32>, @location(1) in_uv: vec2<f32>) -> VertexOutput {
var out: VertexOutput;
out.pos = vec4<f32>(in_pos, 1.0);
out.uv = in_uv;
return out;
}
@stage(fragment)
fn fs_main(in: VertexOutput) -> @location(0) vec4<f32> {
var yuv = vec3<f32>(
1.1643 * (textureSample(tex_y, tex_sampler, in.uv).x - 0.0625),
textureSample(tex_u, tex_sampler, in.uv).x - 0.5,
textureSample(tex_v, tex_sampler, in.uv).x - 0.5
);
return vec4<f32>(
yuv.x + 1.5958 * yuv.z,
yuv.x - 0.39173 * yuv.y - 0.8129 * yuv.z,
yuv.x + 2.017 * yuv.y,
1.0
);
}
)""";
const auto shaderDescriptor = wgpu::ShaderModuleDescriptor{
.nextInChain = &wgslDescriptor,
.label = "Movie Player Shader",
};
auto shader = g_device.CreateShaderModule(&shaderDescriptor);
const std::array uniformLayoutEntries{
wgpu::BindGroupLayoutEntry{
.binding = 0,
.visibility = wgpu::ShaderStage::Fragment,
.sampler =
wgpu::SamplerBindingLayout{
.type = wgpu::SamplerBindingType::Filtering,
},
},
};
const auto uniformLayoutDescriptor = wgpu::BindGroupLayoutDescriptor{
.label = "Movie Player Uniform Bind Group Layout",
.entryCount = uniformLayoutEntries.size(),
.entries = uniformLayoutEntries.data(),
};
auto uniformLayout = g_device.CreateBindGroupLayout(&uniformLayoutDescriptor);
const auto samplerDescriptor = wgpu::SamplerDescriptor{
.addressModeU = wgpu::AddressMode::Repeat,
.addressModeV = wgpu::AddressMode::Repeat,
.addressModeW = wgpu::AddressMode::Repeat,
.magFilter = wgpu::FilterMode::Linear,
.minFilter = wgpu::FilterMode::Linear,
.mipmapFilter = wgpu::FilterMode::Linear,
.maxAnisotropy = g_graphicsConfig.textureAnistropy,
};
auto sampler = g_device.CreateSampler(&samplerDescriptor);
const std::array uniformBindGroupEntries{
wgpu::BindGroupEntry{
.binding = 0,
.sampler = sampler,
},
};
const auto uniformBindGroupDescriptor = wgpu::BindGroupDescriptor{
.label = "Movie Player Uniform Bind Group",
.layout = uniformLayout,
.entryCount = uniformBindGroupEntries.size(),
.entries = uniformBindGroupEntries.data(),
};
auto uniformBindGroup = g_device.CreateBindGroup(&uniformBindGroupDescriptor);
const auto textureBinding = wgpu::TextureBindingLayout{
.sampleType = wgpu::TextureSampleType::Float,
.viewDimension = wgpu::TextureViewDimension::e2D,
};
const std::array textureLayoutEntries{
wgpu::BindGroupLayoutEntry{
.binding = 0,
.visibility = wgpu::ShaderStage::Fragment,
.texture = textureBinding,
},
wgpu::BindGroupLayoutEntry{
.binding = 1,
.visibility = wgpu::ShaderStage::Fragment,
.texture = textureBinding,
},
wgpu::BindGroupLayoutEntry{
.binding = 2,
.visibility = wgpu::ShaderStage::Fragment,
.texture = textureBinding,
},
};
const auto textureLayoutDescriptor = wgpu::BindGroupLayoutDescriptor{
.label = "Movie Player Texture Bind Group Layout",
.entryCount = textureLayoutEntries.size(),
.entries = textureLayoutEntries.data(),
};
auto textureLayout = g_device.CreateBindGroupLayout(&textureLayoutDescriptor);
const std::array bindGroupLayouts{
uniformLayout,
textureLayout,
};
const auto pipelineLayoutDescriptor = wgpu::PipelineLayoutDescriptor{
.label = "Movie Player Pipeline Layout",
.bindGroupLayoutCount = bindGroupLayouts.size(),
.bindGroupLayouts = bindGroupLayouts.data(),
};
auto pipelineLayout = g_device.CreatePipelineLayout(&pipelineLayoutDescriptor);
return {
.shader = shader,
.uniformLayout = uniformLayout,
.uniformBindGroup = uniformBindGroup,
.textureLayout = textureLayout,
.sampler = sampler,
.pipelineLayout = pipelineLayout,
};
}
wgpu::RenderPipeline create_pipeline(const State& state, [[maybe_unused]] PipelineConfig config) {
const auto attributes =
make_vertex_attributes(std::array{wgpu::VertexFormat::Float32x3, wgpu::VertexFormat::Float32x2});
const std::array vertexBuffers{make_vertex_buffer_layout(sizeof(Vert), attributes)};
const auto depthStencil = wgpu::DepthStencilState{
.format = g_graphicsConfig.depthFormat,
};
const auto blendComponent = wgpu::BlendComponent{
.srcFactor = wgpu::BlendFactor::SrcAlpha,
.dstFactor = wgpu::BlendFactor::OneMinusSrcAlpha,
};
const auto blendState = wgpu::BlendState{
.color = blendComponent,
.alpha = blendComponent,
};
const std::array colorTargets{
wgpu::ColorTargetState{
.format = g_graphicsConfig.colorFormat,
.blend = &blendState,
.writeMask = wgpu::ColorWriteMask::Red | wgpu::ColorWriteMask::Green | wgpu::ColorWriteMask::Blue,
},
};
const auto fragmentState = wgpu::FragmentState{
.module = state.shader,
.entryPoint = "fs_main",
.targetCount = colorTargets.size(),
.targets = colorTargets.data(),
};
const auto pipelineDescriptor = wgpu::RenderPipelineDescriptor{
.label = "Movie Player Pipeline",
.layout = state.pipelineLayout,
.vertex = make_vertex_state(state.shader, vertexBuffers),
.primitive =
wgpu::PrimitiveState{
.topology = wgpu::PrimitiveTopology::TriangleStrip,
},
.depthStencil = &depthStencil,
.multisample =
wgpu::MultisampleState{
.count = g_graphicsConfig.msaaSamples,
},
.fragment = &fragmentState,
};
return g_device.CreateRenderPipeline(&pipelineDescriptor);
}
DrawData make_draw_data(const State& state, const TextureHandle& tex_y, const TextureHandle& tex_u,
const TextureHandle& tex_v, float h_pad, float v_pad) {
auto pipeline = pipeline_ref(PipelineConfig{});
const std::array verts{
Vert{{-h_pad, v_pad, 0.f}, {0.0, 0.0}},
Vert{{-h_pad, -v_pad, 0.f}, {0.0, 1.0}},
Vert{{h_pad, v_pad, 0.f}, {1.0, 0.0}},
Vert{{h_pad, -v_pad, 0.f}, {1.0, 1.0}},
};
const auto vertRange = push_verts(ArrayRef{verts});
const std::array entries{
wgpu::BindGroupEntry{
.binding = 0,
.textureView = tex_y.ref->view,
},
wgpu::BindGroupEntry{
.binding = 1,
.textureView = tex_u.ref->view,
},
wgpu::BindGroupEntry{
.binding = 2,
.textureView = tex_v.ref->view,
},
};
const auto textureBindGroup = bind_group_ref(wgpu::BindGroupDescriptor{
.label = "Movie Player Texture Bind Group",
.layout = state.textureLayout,
.entryCount = entries.size(),
.entries = entries.data(),
});
return {
.pipeline = pipeline,
.vertRange = vertRange,
.textureBindGroup = textureBindGroup,
};
}
void render(const State& state, const DrawData& data, const wgpu::RenderPassEncoder& pass) {
if (!bind_pipeline(data.pipeline, pass)) {
return;
}
pass.SetBindGroup(0, state.uniformBindGroup);
pass.SetBindGroup(1, find_bind_group(data.textureBindGroup));
pass.SetVertexBuffer(0, g_vertexBuffer, data.vertRange.first, data.vertRange.second);
pass.Draw(4);
}
} // namespace aurora::gfx::movie_player