public SSAO(int width, int height, Camera camera)
: base()
{
this.camera = camera;
random = new Random();
geometryBuffer = new IOBuffer(width, height, true, PixelInternalFormat.Rgb32f);
SSAOBuffer = new IOBuffer(width, height, false, PixelInternalFormat.R32f);
ssao_geometryDepth = ShaderUtil.CreateShader("ssao_geometryDepth", "./data/shaders/SSAO_geometry.vs", "./data/shaders/SSAO_geometry.fs");
ssao = ShaderUtil.CreateShader("ssao", "./data/shaders/SSAO_pass.vs", "./data/shaders/SSAO_pass.fs");
ssao_voxel = ShaderUtil.CreateShader("qb", "./data/shaders/SSAO_voxel.vs", "./data/shaders/SSAO_voxel.fs");
ssao.WriteUniform("gSampleRad", 1.25f);
ssao.WriteUniform("gProj", camera.projection);
ssao.WriteUniform("gPositionMap", 1);
ssao_voxel.WriteUniform("gScreenSize", new Vector2(width, height));
ssao_voxel.WriteUniform("gAOMap", 2);
Vector3[] kernel = new Vector3[8];
for (uint i = 0; i < kernel.Length; i++)
{
float scale = (float)i / (float)(kernel.Length);
Vector3 v;
v.X = 2.0f * (float)random.Next(0x7fff) / 0x7fff - 1.0f;
v.Y = 2.0f * (float)random.Next(0x7fff) / 0x7fff - 1.0f;
v.Z = 2.0f * (float)random.Next(0x7fff) / 0x7fff - 1.0f;
v *= (0.1f + 0.9f * scale * scale);
kernel[i] = v;
}
unsafe
{
fixed(float *pointer = &kernel[0].X)
{
ssao.WriteUniformArray("gKernel", kernel.Length, pointer);
}
}
quadBuffer = GL.GenBuffer();
GL.BindBuffer(BufferTarget.ArrayBuffer, quadBuffer);
GL.EnableVertexAttribArray(0);
GL.VertexAttribPointer(0, 3, VertexAttribPointerType.Float, false, sizeof(float) * 3, 0);
GL.BufferData(BufferTarget.ArrayBuffer, (IntPtr)(sizeof(float) * quadData.Length), quadData, BufferUsageHint.StaticDraw);
GL.BindBuffer(BufferTarget.ArrayBuffer, 0);
}
public void render(Shader shader)
{
if (Visible && Singleton <Raycaster> .INSTANCE.lastHit.distance != 10000)
{
shader.WriteUniform("highlight", new Vector3(1, 1, 1));
unsafe
{
fixed(float *pointer = &color.R)
{
shader.WriteUniformArray("colors", 1, pointer);
}
}
GL.BindVertexArray(vertexArray);
GL.DrawArrays(PrimitiveType.Quads, 0, 4);
GL.BindVertexArray(0);
}
}
