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// WgslEffect: generic shader-only post-process effect.
// Replaces boilerplate .h/.cc pairs for simple single-pass effects.
#pragma once
#include "gpu/effect.h"
#include "gpu/uniform_helper.h"
#include "gpu/wgpu_resource.h"
// Generic per-effect uniform params (binding 3, 32 bytes).
// Matches WgslEffectParams in WGSL: struct { p: vec4f, c: vec4f }
// effect_params.p — 4 generic floats (strength, scale, etc.)
// effect_params.c — color or secondary vec4
struct WgslEffectParams {
float p[4]; // vec4: generic float params
float c[4]; // vec4: color / secondary params
};
static_assert(sizeof(WgslEffectParams) == 32, "WgslEffectParams must be 32 bytes");
class WgslEffect : public Effect {
public:
// Mutate per-frame for dynamic parameter modulation.
WgslEffectParams effect_params;
WgslEffect(const GpuContext& ctx, const std::vector<std::string>& inputs,
const std::vector<std::string>& outputs, float start_time,
float end_time, const char* shader_code,
WGPULoadOp load_op = WGPULoadOp_Clear,
WgslEffectParams initial_params = {});
void render(WGPUCommandEncoder encoder, const UniformsSequenceParams& params,
NodeRegistry& nodes) override;
private:
RenderPipeline pipeline_;
BindGroup bind_group_;
UniformBuffer<WgslEffectParams> params_buffer_;
WGPULoadOp load_op_;
};
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