protected override void Draw()
{
base.Draw();
if (shader == null)
{
shader = game.Shaders.Load(VertexShader.Colour, FragmentShader.Colour);
}
shader.Bind();
batch.Add(new Vertex2d()
{
Colour = DrawInfo.Colour, Position = screenSpaceDrawQuad.BottomLeft
});
batch.Add(new Vertex2d()
{
Colour = DrawInfo.Colour, Position = screenSpaceDrawQuad.BottomRight
});
batch.Add(new Vertex2d()
{
Colour = DrawInfo.Colour, Position = screenSpaceDrawQuad.TopRight
});
batch.Add(new Vertex2d()
{
Colour = DrawInfo.Colour, Position = screenSpaceDrawQuad.TopLeft
});
batch.Draw();
shader.Unbind();
}
private void addLineQuads(Line line, RectangleF texRect)
{
Vector2 ortho = line.OrthogonalDirection;
Line lineLeft = new Line(line.StartPoint + ortho * radius, line.EndPoint + ortho * radius);
Line lineRight = new Line(line.StartPoint - ortho * radius, line.EndPoint - ortho * radius);
Line screenLineLeft = new Line(Vector2Extensions.Transform(lineLeft.StartPoint, DrawInfo.Matrix), Vector2Extensions.Transform(lineLeft.EndPoint, DrawInfo.Matrix));
Line screenLineRight = new Line(Vector2Extensions.Transform(lineRight.StartPoint, DrawInfo.Matrix), Vector2Extensions.Transform(lineRight.EndPoint, DrawInfo.Matrix));
Line screenLine = new Line(Vector2Extensions.Transform(line.StartPoint, DrawInfo.Matrix), Vector2Extensions.Transform(line.EndPoint, DrawInfo.Matrix));
quadBatch.Add(new TexturedVertex3D
{
Position = new Vector3(screenLineRight.EndPoint.X, screenLineRight.EndPoint.Y, 0),
TexturePosition = new Vector2(texRect.Left, texRect.Centre.Y),
Colour = colourAt(lineRight.EndPoint)
});
quadBatch.Add(new TexturedVertex3D
{
Position = new Vector3(screenLineRight.StartPoint.X, screenLineRight.StartPoint.Y, 0),
TexturePosition = new Vector2(texRect.Left, texRect.Centre.Y),
Colour = colourAt(lineRight.StartPoint)
});
// Each "quad" of the slider is actually rendered as 2 quads, being split in half along the approximating line.
// On this line the depth is 1 instead of 0, which is done properly handle self-overlap using the depth buffer.
// Thus the middle vertices need to be added twice (once for each quad).
Vector3 firstMiddlePoint = new Vector3(screenLine.StartPoint.X, screenLine.StartPoint.Y, 1);
Vector3 secondMiddlePoint = new Vector3(screenLine.EndPoint.X, screenLine.EndPoint.Y, 1);
Color4 firstMiddleColour = colourAt(line.StartPoint);
Color4 secondMiddleColour = colourAt(line.EndPoint);
for (int i = 0; i < 2; ++i)
{
quadBatch.Add(new TexturedVertex3D
{
Position = firstMiddlePoint,
TexturePosition = new Vector2(texRect.Right, texRect.Centre.Y),
Colour = firstMiddleColour
});
quadBatch.Add(new TexturedVertex3D
{
Position = secondMiddlePoint,
TexturePosition = new Vector2(texRect.Right, texRect.Centre.Y),
Colour = secondMiddleColour
});
}
quadBatch.Add(new TexturedVertex3D
{
Position = new Vector3(screenLineLeft.EndPoint.X, screenLineLeft.EndPoint.Y, 0),
TexturePosition = new Vector2(texRect.Left, texRect.Centre.Y),
Colour = colourAt(lineLeft.EndPoint)
});
quadBatch.Add(new TexturedVertex3D
{
Position = new Vector3(screenLineLeft.StartPoint.X, screenLineLeft.StartPoint.Y, 0),
TexturePosition = new Vector2(texRect.Left, texRect.Centre.Y),
Colour = colourAt(lineLeft.StartPoint)
});
}
private void glDrawQuad(Matrix m)
{
quadBatch.Add(new TexturedVertex3d()
{
Position = Vector3.Transform(new Vector3(-QUAD_OVERLAP_FUDGE, -1.0f, 0.0f), m),
TexturePosition = new Vector2(0, 0),
Colour = Color.White
});
quadBatch.Add(new TexturedVertex3d()
{
Position = Vector3.Transform(new Vector3(1.0f + QUAD_OVERLAP_FUDGE, -1.0f, 0.0f), m),
TexturePosition = new Vector2(0, 0),
Colour = Color.White
});
// Each "quad" of the slider is actually rendered as 2 quads, being split in half along the approximating line.
// On this line the depth is 1 instead of 0, which is done properly handle self-overlap using the depth buffer.
// Thus the middle vertices need to be added twice (once for each quad).
Vector3 firstMiddlePoint = Vector3.Transform(new Vector3(1.0f + QUAD_OVERLAP_FUDGE, QUAD_MIDDLECRACK_FUDGE, 1.0f), m);
Vector3 secondMiddlePoint = Vector3.Transform(new Vector3(-QUAD_OVERLAP_FUDGE, QUAD_MIDDLECRACK_FUDGE, 1.0f), m);
for (int i = 0; i < 2; ++i)
{
quadBatch.Add(new TexturedVertex3d()
{
Position = firstMiddlePoint,
TexturePosition = new Vector2(1.0f - 1.0f / (float)TextureSize.Width, 0),
Colour = Color.White
});
quadBatch.Add(new TexturedVertex3d()
{
Position = secondMiddlePoint,
TexturePosition = new Vector2(1.0f - 1.0f / (float)TextureSize.Width, 0),
Colour = Color.White
});
}
quadBatch.Add(new TexturedVertex3d()
{
Position = Vector3.Transform(new Vector3(-QUAD_OVERLAP_FUDGE, 1.0f, 0.0f), m),
TexturePosition = new Vector2(0, 0),
Colour = Color.White
});
quadBatch.Add(new TexturedVertex3d()
{
Position = Vector3.Transform(new Vector3(1.0f + QUAD_OVERLAP_FUDGE, 1.0f, 0.0f), m),
TexturePosition = new Vector2(0, 0),
Colour = Color.White
});
}
public override void Draw()
{
if (Texture == null)
{
return;
}
// For billboarding
Shader.SetGlobalProperty("g_InverseViewMatrix", InverseViewMatrix);
// Taken from DrawNode3D, since we don't need the world transform for particle systems
GLWrapper.SetBlend(Blending);
Shader.Bind();
// Force create a separate batch so we can use instanced rendering
if (particleInstancedBatch == null)
{
particleInstancedBatch = new QuadBatch <TexturedVertex2D>(TexturedVertex2D.Stride * 4, 1);
}
var colourInfo = new ColourInfo {
Colour = Color4.White
};
Texture.DrawQuad(new Quad(-0.5f, -0.5f, 1.0f, 1.0f), colourInfo, vertexAction: v => particleInstancedBatch.Add(v));
// Set GPU buffer data
Buffer.SetData(BufferData);
Buffer.Bind();
// Render instanced
particleInstancedBatch.DrawInstanced(InstanceCount);
Shader.Unbind();
}
internal void DrawQuad(Vector2 topLeft, Vector2 bottomRight, Color colour)
{
quadBatch.Add(new Vertex2d()
{
Position = new Vector2(topLeft.X, bottomRight.Y), Colour = colour
});
quadBatch.Add(new Vertex2d()
{
Position = bottomRight, Colour = colour
});
quadBatch.Add(new Vertex2d()
{
Position = new Vector2(bottomRight.X, topLeft.Y), Colour = colour
});
quadBatch.Add(new Vertex2d()
{
Position = topLeft, Colour = colour
});
}
