Sergio Valor
d2e7f2ff86
Elimina el kernel Metal O(N²) de boids en GPU que causava GPU timeout a macOS amb >50K boles, arrossegant WindowServer fins al crash. - Elimina gpu_boid_buffer.hpp/cpp (GpuBoidBuffer, BallComputeData, BoidParams) - Elimina kBoidComputeMSL i kBallComputeVertMSL de gpu_pipeline - Elimina boid_compute_pipeline_ i ball_compute_pipeline_ - Elimina use_gpu_boids_, boid_params_, ball_screen_uniforms_ de Engine - Elimina syncAndExitGpuBoids() i tot el compute dispatch de render() - Mode BOIDS ara usa sempre boid_manager_ (CPU, spatial hash O(N)) i renderitza via gpu_ball_buffer_ instanced (mateix path que PHYSICS) Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
48 lines
1.8 KiB
C++
48 lines
1.8 KiB
C++
#pragma once
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#include <SDL3/SDL_gpu.h>
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#include <cstdint>
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// ---------------------------------------------------------------------------
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// BallGPUData — 32-byte per-instance record stored in VRAM.
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// Positions and sizes pre-converted to NDC space on CPU so the vertex shader
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// needs no screen-dimension uniform.
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// cx, cy : NDC center (cx = (x + w/2)/sw*2-1, cy = 1-(y+h/2)/sh*2)
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// hw, hh : NDC half-size (hw = w/sw, hh = h/sh, both positive)
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// r,g,b,a: RGBA in [0,1]
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// ---------------------------------------------------------------------------
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struct BallGPUData {
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float cx, cy; // NDC center
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float hw, hh; // NDC half-size (positive)
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float r, g, b, a; // RGBA color [0,1]
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};
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static_assert(sizeof(BallGPUData) == 32, "BallGPUData must be 32 bytes");
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// ============================================================================
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// GpuBallBuffer — owns the GPU vertex buffer used for instanced ball rendering.
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//
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// Usage per frame:
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// buffer.upload(device, cmd, data, count); // inside a copy pass
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// // Then in render pass: bind buffer, SDL_DrawGPUPrimitives(pass, 6, count, 0, 0)
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// ============================================================================
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class GpuBallBuffer {
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public:
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static constexpr int MAX_BALLS = 500000;
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bool init(SDL_GPUDevice* device);
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void destroy(SDL_GPUDevice* device);
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// Upload ball array to GPU via an internal copy pass.
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// count is clamped to MAX_BALLS. Returns false on error or empty input.
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bool upload(SDL_GPUDevice* device, SDL_GPUCommandBuffer* cmd,
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const BallGPUData* data, int count);
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SDL_GPUBuffer* buffer() const { return gpu_buf_; }
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int count() const { return count_; }
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private:
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SDL_GPUBuffer* gpu_buf_ = nullptr;
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SDL_GPUTransferBuffer* transfer_buf_ = nullptr;
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int count_ = 0;
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};
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