public static void CreateCubemap(GLContext control, GLTextureCube cubemapInput,
GLTexture cubemapOutput, int layer, int numMips)
{
int size = cubemapInput.Width;
Matrix4 projection = Matrix4.CreatePerspectiveFieldOfView(MathHelper.DegreesToRadians(90), 1.0f, 0.1f, 10.0f);
Matrix4[] captureViews =
{
Matrix4.LookAt(new Vector3(0.0f, 0.0f, 0.0f), new Vector3(1.0f, 0.0f, 0.0f), new Vector3(0.0f, -1.0f, 0.0f)),
Matrix4.LookAt(new Vector3(0.0f, 0.0f, 0.0f), new Vector3(-1.0f, 0.0f, 0.0f), new Vector3(0.0f, -1.0f, 0.0f)),
Matrix4.LookAt(new Vector3(0.0f, 0.0f, 0.0f), new Vector3(0.0f, 1.0f, 0.0f), new Vector3(0.0f, 0.0f, 1.0f)),
Matrix4.LookAt(new Vector3(0.0f, 0.0f, 0.0f), new Vector3(0.0f, -1.0f, 0.0f), new Vector3(0.0f, 0.0f, -1.0f)),
Matrix4.LookAt(new Vector3(0.0f, 0.0f, 0.0f), new Vector3(0.0f, 0.0f, 1.0f), new Vector3(0.0f, -1.0f, 0.0f)),
Matrix4.LookAt(new Vector3(0.0f, 0.0f, 0.0f), new Vector3(0.0f, 0.0f, -1.0f), new Vector3(0.0f, -1.0f, 0.0f)),
};
GL.BindTexture(TextureTarget.TextureCubeMap, 0);
//Bind the cubemap's texture into a filtered quad.
//Bind the drawn filter to a cubemap array layer
Framebuffer frameBuffer = new Framebuffer(FramebufferTarget.Framebuffer, size, size, PixelInternalFormat.Rgba32f);
frameBuffer.Bind();
GL.Disable(EnableCap.Blend);
var cubemapFilter = GlobalShaders.GetShader("CUBEMAP_HDRDECODE");
cubemapFilter.Enable();
GL.ActiveTexture(TextureUnit.Texture0 + 1);
cubemapInput.Bind();
cubemapFilter.SetInt("cubemapTexture", 1);
cubemapFilter.SetMatrix4x4("projection", ref projection);
cubemapFilter.SetFloat("gamma", 2.2f);
cubemapFilter.SetFloat("range", 1024.0f);
cubemapFilter.SetFloat("scale", 4.0f);
GL.Disable(EnableCap.CullFace);
for (int mip = 0; mip < numMips; mip++)
{
int mipWidth = (int)(size * Math.Pow(0.5, mip));
int mipHeight = (int)(size * Math.Pow(0.5, mip));
frameBuffer.Resize(mipWidth, mipHeight);
GL.Viewport(0, 0, mipWidth, mipHeight);
cubemapFilter.SetFloat("mipLevel", mip);
for (int i = 0; i < 6; i++)
{
cubemapFilter.SetInt("faceLevel", i);
//attach face to fbo as color attachment 0
if (cubemapOutput is GLTextureCubeArray)
{
GL.FramebufferTextureLayer(FramebufferTarget.Framebuffer,
FramebufferAttachment.ColorAttachment0, cubemapOutput.ID, mip, (layer * 6) + i);
}
else
{
GL.FramebufferTexture2D(FramebufferTarget.Framebuffer,
FramebufferAttachment.ColorAttachment0,
TextureTarget.TextureCubeMapPositiveX + i, cubemapOutput.ID, mip);
}
cubemapFilter.SetMatrix4x4("view", ref captureViews[i]);
GL.ClearColor(0, 0, 0, 1);
GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
RenderTools.DrawCube();
}
}
var errorcheck = GL.CheckFramebufferStatus(FramebufferTarget.Framebuffer);
if (errorcheck != FramebufferErrorCode.FramebufferComplete)
{
throw new Exception(errorcheck.ToString());
}
GL.BindFramebuffer(FramebufferTarget.Framebuffer, 0);
GL.Enable(EnableCap.CullFace);
GL.Enable(EnableCap.Blend);
frameBuffer.Dispoe();
frameBuffer.DisposeRenderBuffer();
GL.UseProgram(0);
}
public static void CreateCubemap(GLContext control, GLTextureCube cubemapInput,
GLTexture cubemapOutput, int layer)
{
int size = cubemapOutput.Width;
Matrix4 projection = Matrix4.CreatePerspectiveFieldOfView(MathHelper.DegreesToRadians(90), 1.0f, 0.1f, 10.0f);
Matrix4[] captureViews =
{
Matrix4.LookAt(new Vector3(0.0f, 0.0f, 0.0f), new Vector3(1.0f, 0.0f, 0.0f), new Vector3(0.0f, -1.0f, 0.0f)),
Matrix4.LookAt(new Vector3(0.0f, 0.0f, 0.0f), new Vector3(-1.0f, 0.0f, 0.0f), new Vector3(0.0f, -1.0f, 0.0f)),
Matrix4.LookAt(new Vector3(0.0f, 0.0f, 0.0f), new Vector3(0.0f, 1.0f, 0.0f), new Vector3(0.0f, 0.0f, 1.0f)),
Matrix4.LookAt(new Vector3(0.0f, 0.0f, 0.0f), new Vector3(0.0f, -1.0f, 0.0f), new Vector3(0.0f, 0.0f, -1.0f)),
Matrix4.LookAt(new Vector3(0.0f, 0.0f, 0.0f), new Vector3(0.0f, 0.0f, 1.0f), new Vector3(0.0f, -1.0f, 0.0f)),
Matrix4.LookAt(new Vector3(0.0f, 0.0f, 0.0f), new Vector3(0.0f, 0.0f, -1.0f), new Vector3(0.0f, -1.0f, 0.0f)),
};
GL.BindTexture(TextureTarget.TextureCubeMap, 0);
//Bind the cubemap's texture into a filtered quad.
//Bind the drawn filter to a cubemap array layer
Framebuffer frameBuffer = new Framebuffer(FramebufferTarget.Framebuffer, size, size, PixelInternalFormat.Rgba32f);
frameBuffer.Bind();
GL.Disable(EnableCap.Blend);
var cubemapFilter = GlobalShaders.GetShader("CUBEMAP_PREFILTER");
cubemapFilter.Enable();
//Allocate mipmaps
cubemapOutput.Bind();
cubemapOutput.GenerateMipmaps();
cubemapOutput.Unbind();
GL.ActiveTexture(TextureUnit.Texture0 + 1);
cubemapInput.Bind();
cubemapFilter.SetInt("environmentMap", 1);
cubemapFilter.SetMatrix4x4("projection", ref projection);
//Quick hack, draw once before rendering (first buffer not updating for some reason??)
RenderTools.DrawCube();
GL.Disable(EnableCap.CullFace);
for (int mip = 0; mip < cubemapOutput.MipCount; mip++)
{
int mipWidth = (int)(size * Math.Pow(0.5, mip));
int mipHeight = (int)(size * Math.Pow(0.5, mip));
frameBuffer.Resize(mipWidth, mipHeight);
GL.Viewport(0, 0, mipWidth, mipHeight);
float roughness = (float)mip / (float)(cubemapOutput.MipCount - 1);
cubemapFilter.SetFloat("roughness", roughness);
for (int i = 0; i < 6; i++)
{
//attach face to fbo as color attachment 0
if (cubemapOutput is GLTextureCubeArray)
{
GL.FramebufferTextureLayer(FramebufferTarget.Framebuffer,
FramebufferAttachment.ColorAttachment0, cubemapOutput.ID, mip, (layer * 6) + i);
}
else
{
GL.FramebufferTexture2D(FramebufferTarget.Framebuffer,
FramebufferAttachment.ColorAttachment0,
TextureTarget.TextureCubeMapPositiveX + i, cubemapOutput.ID, mip);
}
cubemapFilter.SetMatrix4x4("view", ref captureViews[i]);
GL.ClearColor(0, 0, 0, 1);
GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
RenderTools.DrawCube();
}
}
var errorcheck = GL.CheckFramebufferStatus(FramebufferTarget.Framebuffer);
if (errorcheck != FramebufferErrorCode.FramebufferComplete)
{
throw new Exception(errorcheck.ToString());
}
GL.BindFramebuffer(FramebufferTarget.Framebuffer, 0);
GL.Enable(EnableCap.CullFace);
GL.Enable(EnableCap.Blend);
frameBuffer.Dispoe();
frameBuffer.DisposeRenderBuffer();
GL.UseProgram(0);
}
public void DrawBoundings(GLContext control)
{
foreach (BfresModelAsset model in Models)
{
if (!model.IsVisible)
{
continue;
}
foreach (var mesh in model.Meshes)
{
if (!mesh.IsVisible || !mesh.InFrustum)
{
continue;
}
//Go through each bounding in the current displayed mesh
var polygonGroup = mesh.Shape.PolygonGroups[mesh.LODMeshLevel] as MeshPolygonGroup;
foreach (var bounding in polygonGroup.Boundings)
{
var min = bounding.Center - bounding.Extent;
var max = bounding.Center + bounding.Extent;
var shader = GlobalShaders.GetShader("PICKING");
control.CurrentShader = shader;
control.CurrentShader.SetVector4("color", new Vector4(1));
Matrix4 transform = Matrix4.Identity;
if (mesh.SkinCount == 0)
{
transform = model.ModelData.Skeleton.Bones[mesh.BoneIndex].Transform;
control.CurrentShader.SetMatrix4x4("mtxMdl", ref transform);
var bnd = mesh.BoundingNode.Box;
BoundingBoxRender.Draw(control, bnd.Min, bnd.Max);
}
else
{
foreach (var boneIndex in mesh.Shape.Shape.SkinBoneIndices)
{
transform = model.ModelData.Skeleton.Bones[boneIndex].Transform;
control.CurrentShader.SetMatrix4x4("mtxMdl", ref transform);
BoundingBoxRender.Draw(control,
new Vector3(min.X, min.Y, min.Z),
new Vector3(max.X, max.Y, max.Z));
}
}
}
/*
* var center = mesh.BoundingNode.Center;
* var radius = mesh.BoundingNode.Radius;
*
* GL.Enable(EnableCap.Blend);
*
* transform = Matrix4.CreateScale(radius) * Matrix4.CreateTranslation(center) * transform;
* control.CurrentShader.SetMatrix4x4("mtxMdl", ref transform);
* control.CurrentShader.SetVector4("color", new Vector4(0,0,0,0.2f));
*
* SphereRender.Draw(control);
*
* GL.Disable(EnableCap.Blend);*/
}
}
control.CurrentShader = null;
}