private ClydeTexture GenTexture(GLHandle glHandle, Vector2i size, string?name, long memoryPressure = 0)
{
if (name != null)
{
ObjectLabelMaybe(ObjectLabelIdentifier.Texture, glHandle, name);
}
var(width, height) = size;
var id = AllocRid();
var instance = new ClydeTexture(id, size, this);
var loaded = new LoadedTexture
{
OpenGLObject = glHandle,
Width = width,
Height = height,
Name = name,
MemoryPressure = memoryPressure
// TextureInstance = new WeakReference<ClydeTexture>(instance)
};
_loadedTextures.Add(id, loaded);
//GC.AddMemoryPressure(memoryPressure);
return(instance);
}
private unsafe void InitLighting()
{
LoadLightingShaders();
RegenerateLightingRenderTargets();
// Occlusion VAO.
// Only handles positions, no other vertex data necessary.
_occlusionVao = new GLHandle(GL.GenVertexArray());
GL.BindVertexArray(_occlusionVao.Handle);
ObjectLabelMaybe(ObjectLabelIdentifier.VertexArray, _occlusionVao, nameof(_occlusionVao));
_occlusionVbo = new GLBuffer(this, BufferTarget.ArrayBuffer, BufferUsageHint.DynamicDraw,
nameof(_occlusionVbo));
_occlusionEbo = new GLBuffer(this, BufferTarget.ElementArrayBuffer, BufferUsageHint.DynamicDraw,
nameof(_occlusionEbo));
GL.VertexAttribPointer(0, 3, VertexAttribPointerType.Float, false, sizeof(Vector3), IntPtr.Zero);
GL.EnableVertexAttribArray(0);
// FOV FBO.
_fovRenderTarget = CreateRenderTarget((ShadowMapSize, 1),
new RenderTargetFormatParameters(RenderTargetColorFormat.R32F, true),
new TextureSampleParameters {
WrapMode = TextureWrapMode.Repeat
}, "FOV depth render target");
_fovDepthTextureObject = _fovRenderTarget.Texture;
}
public RenderTarget(Vector2i size, ClydeTexture texture, OGLHandle objectHandle, Clyde clyde, ClydeHandle handle)
{
Size = size;
Texture = texture;
ObjectHandle = objectHandle;
_clyde = clyde;
Handle = handle;
}
public RenderTarget(Vector2i size, ClydeTexture texture, OGLHandle objectHandle, Clyde clyde,
ClydeHandle handle, OGLHandle stencilBuffer)
{
Size = size;
Texture = texture;
ObjectHandle = objectHandle;
_clyde = clyde;
Handle = handle;
StencilBuffer = stencilBuffer;
}
private void DeleteTexture(ClydeTexture texture)
{
if (!_loadedTextures.TryGetValue(texture.TextureId, out var loadedTexture))
{
// Already deleted.
return;
}
GL.DeleteTexture(loadedTexture.OpenGLObject.Handle);
_loadedTextures.Remove(texture.TextureId);
}
private void LoadStockTextures()
{
var white = new Image <Rgba32>(1, 1);
white[0, 0] = Rgba32.White;
_stockTextureWhite = (ClydeTexture)Texture.LoadFromImage(white);
var blank = new Image <Rgba32>(1, 1);
blank[0, 0] = Rgba32.Transparent;
_stockTextureTransparent = (ClydeTexture)Texture.LoadFromImage(blank);
}
private void LoadStockTextures()
{
var white = new Image <Rgba32>(1, 1);
white[0, 0] = new Rgba32(255, 255, 255, 255);
_stockTextureWhite = (ClydeTexture)Texture.LoadFromImage(white);
var black = new Image <Rgba32>(1, 1);
black[0, 0] = new Rgba32(0, 0, 0, 255);
_stockTextureBlack = (ClydeTexture)Texture.LoadFromImage(black);
var blank = new Image <Rgba32>(1, 1);
blank[0, 0] = new Rgba32(0, 0, 0, 0);
_stockTextureTransparent = (ClydeTexture)Texture.LoadFromImage(blank);
}
private void CopyRenderTextureToTexture(RenderTexture source, ClydeTexture target)
{
LoadedRenderTarget sourceLoaded = RtToLoaded(source);
bool pause = sourceLoaded != _currentBoundRenderTarget;
FullStoredRendererState?store = null;
if (pause)
{
store = PushRenderStateFull();
BindRenderTargetFull(source);
CheckGlError();
}
GL.BindTexture(TextureTarget.Texture2D, _loadedTextures[target.TextureId].OpenGLObject.Handle);
CheckGlError();
GL.CopyTexSubImage2D(TextureTarget.Texture2D, 0, 0, 0, 0, 0, source.Size.X, source.Size.Y);
CheckGlError();
if (pause && store != null)
{
PopRenderStateFull((FullStoredRendererState)store);
}
}
public RenderTexture(Vector2i size, ClydeTexture texture, Clyde clyde, ClydeHandle handle)
: base(clyde, handle)
{
Size = size;
Texture = texture;
}
private unsafe void InitLighting()
{
LoadLightingShaders();
RegenerateLightingRenderTargets();
// Occlusion VAO.
// Only handles positions, no other vertex data necessary.
_occlusionVao = new GLHandle(GL.GenVertexArray());
GL.BindVertexArray(_occlusionVao.Handle);
ObjectLabelMaybe(ObjectLabelIdentifier.VertexArray, _occlusionVao, nameof(_occlusionVao));
_occlusionVbo = new GLBuffer(this, BufferTarget.ArrayBuffer, BufferUsageHint.DynamicDraw,
nameof(_occlusionVbo));
_occlusionEbo = new GLBuffer(this, BufferTarget.ElementArrayBuffer, BufferUsageHint.DynamicDraw,
nameof(_occlusionEbo));
GL.VertexAttribPointer(0, 3, VertexAttribPointerType.Float, false, sizeof(Vector3), IntPtr.Zero);
GL.EnableVertexAttribArray(0);
// FOV FBO.
_fovFbo = new GLHandle(GL.GenFramebuffer());
var boundDrawBuffer = GL.GetInteger(GetPName.DrawFramebufferBinding);
var boundReadBuffer = GL.GetInteger(GetPName.ReadFramebufferBinding);
GL.BindFramebuffer(FramebufferTarget.Framebuffer, _fovFbo.Handle);
_fovDepthTexture = new GLHandle(GL.GenTexture());
GL.BindTexture(TextureTarget.Texture2D, _fovDepthTexture.Handle);
_fovDepthTextureObject = _genTexture(_fovDepthTexture, (ShadowMapSize, 1), "FOV depth texture");
GL.TexImage2D(TextureTarget.Texture2D, 0, PixelInternalFormat.DepthComponent, ShadowMapSize, 1, 0,
PixelFormat.DepthComponent, PixelType.Float, IntPtr.Zero);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapS,
(int)OGLTextureWrapMode.Repeat);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapT,
(int)OGLTextureWrapMode.Repeat);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter,
(int)TextureMagFilter.Nearest);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter,
(int)TextureMinFilter.Nearest);
GL.FramebufferTexture(FramebufferTarget.Framebuffer, FramebufferAttachment.DepthAttachment,
_fovDepthTexture.Handle, 0);
GL.DrawBuffer(DrawBufferMode.None);
GL.ReadBuffer(ReadBufferMode.None);
var status = GL.CheckFramebufferStatus(FramebufferTarget.Framebuffer);
DebugTools.Assert(status == FramebufferErrorCode.FramebufferComplete,
$"new framebuffer has bad status {status}");
GL.BindFramebuffer(FramebufferTarget.DrawFramebuffer, boundDrawBuffer);
GL.BindFramebuffer(FramebufferTarget.ReadFramebuffer, boundReadBuffer);
}
