public static void ThrowInvalidOperationIfNull(Texture2D texture, string memberName)
{
if (texture == null)
{
throw new InvalidOperationException(memberName);
}
}
public static void ValidateColor(Texture2D colorTexture, byte red, byte green, byte blue)
{
using (ReadPixelBuffer readPixelBuffer = colorTexture.CopyToBuffer(ImageFormat.RedGreenBlue, ImageDatatype.UnsignedByte, 1))
{
byte[] color = readPixelBuffer.CopyToSystemMemory<byte>();
Assert.AreEqual(red, color[0], "Red does not match");
Assert.AreEqual(green, color[1], "Green does not match");
Assert.AreEqual(blue, color[2], "Blue does not match");
}
}
///////////////////////////////////////////////////////////////////////
private static void ValidateDepth(Texture2D depthTexture, float depth)
{
using (ReadPixelBuffer readPixelBuffer = depthTexture.CopyToBuffer(ImageFormat.DepthComponent, ImageDatatype.Float, 1))
{
float[] readDepth = readPixelBuffer.CopyToSystemMemory<float>();
Assert.AreEqual (depth, readDepth[0]);
}
}
internal static void Attach(FramebufferAttachment attachPoint, Texture2D texture)
{
if (texture != null)
{
// TODO: Mipmap level
Texture2DGL3x textureGL = (Texture2DGL3x)texture;
GL.FramebufferTexture(FramebufferTarget.Framebuffer, attachPoint, textureGL.Handle.Value, 0);
}
else
{
GL.FramebufferTexture(FramebufferTarget.Framebuffer, attachPoint, 0, 0);
}
}
private void RenderTileToLevelTexture(Context context, ClipmapLevel level, RasterDataDetails details, RasterTileRegion region, Texture2D tileTexture)
{
Texture2D levelTexture;
Vector2I originInTextures;
ClipmapLevel.Extent nextExtent;
if (details.Type == RasterType.Terrain)
{
levelTexture = level.HeightTexture;
originInTextures = level.OriginInTextures;
nextExtent = level.NextExtent;
}
else
{
levelTexture = level.ImageryTexture;
originInTextures = level.OriginInImagery;
nextExtent = level.NextImageryExtent;
}
context.TextureUnits[0].Texture = tileTexture;
context.TextureUnits[0].TextureSampler = Device.TextureSamplers.NearestClamp;
_framebuffer.ColorAttachments[_updateTexelOutput] = levelTexture;
int clipmapSize = nextExtent.East - nextExtent.West + 1;
int destWest = (originInTextures.X + (region.Tile.West + region.West - nextExtent.West)) % clipmapSize;
int destSouth = (originInTextures.Y + (region.Tile.South + region.South - nextExtent.South)) % clipmapSize;
int width = region.East - region.West + 1;
int height = region.North - region.South + 1;
_updateSourceOrigin.Value = new Vector2F(region.West, region.South);
_updateUpdateSize.Value = new Vector2F(width, height);
_updateDestinationOffset.Value = new Vector2F(destWest, destSouth);
// Save the current state of the context
Rectangle oldViewport = context.Viewport;
Framebuffer oldFramebuffer = context.Framebuffer;
// Update the context and draw
context.Viewport = new Rectangle(0, 0, levelTexture.Description.Width, levelTexture.Description.Height);
context.Framebuffer = _framebuffer;
context.Draw(_unitQuadPrimitiveType, _updateDrawState, _sceneState);
// Restore the context to its original state
context.Framebuffer = oldFramebuffer;
context.Viewport = oldViewport;
}
public void Render(Context context, SceneState sceneState, Texture2D silhouetteTexture, Texture2D depthTexture)
{
//
// Render the line on terrain using the wall method
//
context.TextureUnits[0].Texture = silhouetteTexture;
context.TextureUnits[0].TextureSampler = Device.TextureSamplers.LinearClamp;
context.TextureUnits[1].Texture = depthTexture;
context.TextureUnits[1].TextureSampler = Device.TextureSamplers.LinearClamp;
context.Draw(PrimitiveType.LinesAdjacency, _wallDrawState, sceneState);
//
// Render the line on terrain using the depth-fail shadow volume method
//
context.TextureUnits[0].Texture = silhouetteTexture;
context.TextureUnits[0].TextureSampler = Device.TextureSamplers.LinearClamp;
context.Draw(PrimitiveType.LinesAdjacency, _shadowVolumePassOne, sceneState);
//
// Render where the stencil is set; note that the stencil is also cleared
// where it is set.
//
context.Draw(PrimitiveType.LinesAdjacency, _shadowVolumePassTwo, sceneState);
}
private void SetFramebufferAttachments(Texture2D day, Texture2D night, Texture2D blend)
{
_framebuffer.ColorAttachments[_globe.FragmentOutputs("dayColor")] = day;
_framebuffer.ColorAttachments[_globe.FragmentOutputs("nightColor")] = night;
_framebuffer.ColorAttachments[_globe.FragmentOutputs("blendAlpha")] = blend;
_framebuffer.DepthAttachment = _depthTexture;
}
