diff options
Diffstat (limited to 'examples/qt3d/compute-particles/shaders/gl45/particles.comp')
-rw-r--r-- | examples/qt3d/compute-particles/shaders/gl45/particles.comp | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/examples/qt3d/compute-particles/shaders/gl45/particles.comp b/examples/qt3d/compute-particles/shaders/gl45/particles.comp new file mode 100644 index 000000000..9a6f74cfc --- /dev/null +++ b/examples/qt3d/compute-particles/shaders/gl45/particles.comp @@ -0,0 +1,43 @@ +#version 450 core + +layout(std140, binding=3) uniform particle_uniforms { + float particleStep; + float finalCollisionFactor; +}; + +layout (local_size_x = 1024) in; + +struct ParticleData +{ + vec4 position; + vec4 direction; + vec4 color; +}; + +// Particles from previouse frame +layout (std430, binding = 5) coherent buffer Particles +{ + ParticleData particles[]; +} data; + +void main(void) +{ + uint globalId = gl_GlobalInvocationID.x; + + // Retrieve current particle from previous frame + ParticleData currentParticle = data.particles[globalId]; + + // New position = old position + distance traveled over step duration + currentParticle.position = currentParticle.position + currentParticle.direction * particleStep; + + // Make acceleration more or less point toward the center of the scene + vec4 acceleration = normalize(vec4(0.0) - currentParticle.position) * finalCollisionFactor; + + // New velocity = old velocity + acceleration over step duration + currentParticle.direction = currentParticle.direction + acceleration * particleStep; + + + + // Save updated particle + data.particles[globalId] = currentParticle; +} |