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// This file is part of the 64k demo project.
// It implements the DistortEffect.
#include "gpu/demo_effects.h"
#include "gpu/gpu.h"
// --- DistortEffect ---
DistortEffect::DistortEffect(WGPUDevice device, WGPUQueue queue,
WGPUTextureFormat format)
: PostProcessEffect(device, queue) {
uniforms_ =
gpu_create_buffer(device_, sizeof(float) * 4,
WGPUBufferUsage_Uniform | WGPUBufferUsage_CopyDst);
pipeline_ = create_post_process_pipeline(device_, format, distort_shader_wgsl);
}
void DistortEffect::render(WGPURenderPassEncoder pass, float t, float b,
float i, float a) {
struct {
float t, b, i, a;
} u = {t, b, i, a};
wgpuQueueWriteBuffer(queue_, uniforms_.buffer, 0, &u, sizeof(u));
PostProcessEffect::render(pass, t, b, i, a);
}
void DistortEffect::update_bind_group(WGPUTextureView v) {
pp_update_bind_group(device_, pipeline_, &bind_group_, v, uniforms_);
}
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