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
139
140
|
// GBufDeferredEffect — simple deferred render: albedo * shadow from packed G-buffer.
#include "gbuf_deferred_effect.h"
#include "gpu/gpu.h"
#include "gpu/shader_composer.h"
#include "util/fatal_error.h"
extern const char* gbuf_deferred_wgsl;
struct GBufDeferredUniforms {
float resolution[2];
};
static_assert(sizeof(GBufDeferredUniforms) == 8, "GBufDeferredUniforms must be 8 bytes");
static WGPUBindGroupLayoutEntry bgl_uint_tex(uint32_t binding) {
WGPUBindGroupLayoutEntry e = {};
e.binding = binding;
e.visibility = WGPUShaderStage_Fragment;
e.texture.sampleType = WGPUTextureSampleType_Uint;
e.texture.viewDimension = WGPUTextureViewDimension_2D;
return e;
}
static WGPUBindGroupLayoutEntry bgl_uniform(uint32_t binding, uint64_t min_size) {
WGPUBindGroupLayoutEntry e = {};
e.binding = binding;
e.visibility = WGPUShaderStage_Fragment;
e.buffer.type = WGPUBufferBindingType_Uniform;
e.buffer.minBindingSize = min_size;
return e;
}
GBufDeferredEffect::GBufDeferredEffect(const GpuContext& ctx,
const std::vector<std::string>& inputs,
const std::vector<std::string>& outputs,
float start_time, float end_time)
: Effect(ctx, inputs, outputs, start_time, end_time) {
HEADLESS_RETURN_IF_NULL(ctx_.device);
WGPUBindGroupLayoutEntry entries[3] = {
bgl_uint_tex(0),
bgl_uint_tex(1),
bgl_uniform(2, sizeof(GBufDeferredUniforms)),
};
WGPUBindGroupLayoutDescriptor bgl_desc = {};
bgl_desc.entryCount = 3;
bgl_desc.entries = entries;
WGPUBindGroupLayout bgl = wgpuDeviceCreateBindGroupLayout(ctx_.device, &bgl_desc);
WGPUPipelineLayoutDescriptor pl_desc = {};
pl_desc.bindGroupLayoutCount = 1;
pl_desc.bindGroupLayouts = &bgl;
WGPUPipelineLayout pl = wgpuDeviceCreatePipelineLayout(ctx_.device, &pl_desc);
WGPUShaderSourceWGSL wgsl_src = {};
wgsl_src.chain.sType = WGPUSType_ShaderSourceWGSL;
const std::string composed = ShaderComposer::Get().Compose({}, gbuf_deferred_wgsl);
wgsl_src.code = str_view(composed.c_str());
WGPUShaderModuleDescriptor shader_desc = {};
shader_desc.nextInChain = &wgsl_src.chain;
WGPUShaderModule shader = wgpuDeviceCreateShaderModule(ctx_.device, &shader_desc);
WGPUColorTargetState target = {};
target.format = WGPUTextureFormat_RGBA8Unorm;
target.writeMask = WGPUColorWriteMask_All;
WGPUFragmentState frag = {};
frag.module = shader;
frag.entryPoint = str_view("fs_main");
frag.targetCount = 1;
frag.targets = ⌖
WGPURenderPipelineDescriptor pipe_desc = {};
pipe_desc.layout = pl;
pipe_desc.vertex.module = shader;
pipe_desc.vertex.entryPoint = str_view("vs_main");
pipe_desc.fragment = &frag;
pipe_desc.primitive.topology = WGPUPrimitiveTopology_TriangleList;
pipe_desc.multisample.count = 1;
pipe_desc.multisample.mask = UINT32_MAX;
pipeline_.set(wgpuDeviceCreateRenderPipeline(ctx_.device, &pipe_desc));
wgpuShaderModuleRelease(shader);
wgpuPipelineLayoutRelease(pl);
wgpuBindGroupLayoutRelease(bgl);
}
void GBufDeferredEffect::render(WGPUCommandEncoder encoder,
const UniformsSequenceParams& params,
NodeRegistry& nodes) {
WGPUTextureView feat0_view = nodes.get_view(input_nodes_[0]);
WGPUTextureView feat1_view = nodes.get_view(input_nodes_[1]);
WGPUTextureView output_view = nodes.get_view(output_nodes_[0]);
// Upload resolution uniform into the base class uniforms buffer (first 8 bytes).
GBufDeferredUniforms u;
u.resolution[0] = params.resolution.x;
u.resolution[1] = params.resolution.y;
wgpuQueueWriteBuffer(ctx_.queue, uniforms_buffer_.get().buffer, 0,
&u, sizeof(u));
WGPUBindGroupLayout bgl =
wgpuRenderPipelineGetBindGroupLayout(pipeline_.get(), 0);
WGPUBindGroupEntry bg_entries[3] = {};
bg_entries[0].binding = 0;
bg_entries[0].textureView = feat0_view;
bg_entries[1].binding = 1;
bg_entries[1].textureView = feat1_view;
bg_entries[2].binding = 2;
bg_entries[2].buffer = uniforms_buffer_.get().buffer;
bg_entries[2].size = sizeof(GBufDeferredUniforms);
WGPUBindGroupDescriptor bg_desc = {};
bg_desc.layout = bgl;
bg_desc.entryCount = 3;
bg_desc.entries = bg_entries;
bind_group_.replace(wgpuDeviceCreateBindGroup(ctx_.device, &bg_desc));
wgpuBindGroupLayoutRelease(bgl);
WGPURenderPassColorAttachment color_att = {};
color_att.view = output_view;
color_att.loadOp = WGPULoadOp_Clear;
color_att.storeOp = WGPUStoreOp_Store;
color_att.clearValue = {0.0f, 0.0f, 0.0f, 1.0f};
color_att.depthSlice = WGPU_DEPTH_SLICE_UNDEFINED;
WGPURenderPassDescriptor pass_desc = {};
pass_desc.colorAttachmentCount = 1;
pass_desc.colorAttachments = &color_att;
WGPURenderPassEncoder pass =
wgpuCommandEncoderBeginRenderPass(encoder, &pass_desc);
wgpuRenderPassEncoderSetPipeline(pass, pipeline_.get());
wgpuRenderPassEncoderSetBindGroup(pass, 0, bind_group_.get(), 0, nullptr);
wgpuRenderPassEncoderDraw(pass, 3, 1, 0, 0);
wgpuRenderPassEncoderEnd(pass);
wgpuRenderPassEncoderRelease(pass);
}
|
