public void Draw(ShaderProgram shader)
{
if (text == string.Empty)
return;
if(dirty)
{
dirty = false;
Upload();
}
if (indices == null || vertices == null)
return;
Font.Texture.Bind();
GL.BindVertexArray(vao);
if (mustDescribe)
{
int stride = BlittableValueType.StrideOf(vertices);
GL.BindBuffer(BufferTarget.ArrayBuffer, vbo);
// Vertex
int vertexLocation = shader.GetAttribLocation("vertex");
if(vertexLocation > -1)
{
GL.EnableVertexAttribArray(vertexLocation);
GL.VertexAttribPointer(vertexLocation, 2, VertexAttribPointerType.Float, false, stride, 0);
}
else
{
Console.WriteLine("Bad attribute location for vertex: " + vertexLocation);
}
// TCoord
int uvLocation = shader.GetAttribLocation("uv");
if(uvLocation > -1)
{
GL.EnableVertexAttribArray(uvLocation);
GL.VertexAttribPointer(uvLocation, 2, VertexAttribPointerType.Float, false, stride, Vector2.SizeInBytes);
}
else
{
Console.WriteLine("Bad attribute location for uv: " + uvLocation);
}
// Color
int colorLocation = shader.GetAttribLocation("vColor");
if(colorLocation > -1)
{
GL.EnableVertexAttribArray(colorLocation);
GL.VertexAttribPointer(colorLocation, 4, VertexAttribPointerType.Float, false, stride, Vector2.SizeInBytes * 2);
}
else
{
Console.WriteLine("Bad attribute location for vColor: " + colorLocation);
}
// BorderColor
int borderLocation = shader.GetAttribLocation("vBorderColor");
if (borderLocation > -1)
{
GL.EnableVertexAttribArray(borderLocation);
GL.VertexAttribPointer(borderLocation, 4, VertexAttribPointerType.Float, false, stride, Vector2.SizeInBytes * 2 + Vector4.SizeInBytes);
}
else
{
Console.WriteLine("Bad attribute location for vBorderColor: " + borderLocation);
}
// Settings
/*int settingsLocation = shader.GetAttribLocation("vSettings");
GL.EnableVertexAttribArray(settingsLocation);
GL.VertexAttribPointer(settingsLocation, 3, VertexAttribPointerType.Float, false, stride, Vector2.SizeInBytes * 2 + Vector4.SizeInBytes * 2);*/
GL.BindBuffer(BufferTarget.ElementArrayBuffer, ebo);
mustDescribe = false;
}
//float smooth = (1f - (fontsize / 150f)) * 0.5f * this.weight * this.smooth;
if (smooth < 0f)
smooth = 0f;
else if (smooth > 0.5f)
smooth = 0.5f;
//float weight = Hatzap.Utilities.MathHelper.Lerp(0f, 2f, 1f - (fontsize / 100f * this.weight));
//float weight = (float)Math.Pow(1.5f - (fontsize / 150f), this.weight) * this.weight * 0.75f;
/*if (weight < 0.75f)
weight = 0.75f;*/
CalculatedWeight = weight;
Vector4 settings = new Vector4(fontsize, weight, border, smooth);
shader.SendUniform("Settings", ref settings);
GL.DrawElements(PrimitiveType.Triangles, indices.Length, DrawElementsType.UnsignedInt, IntPtr.Zero);
GL.BindVertexArray(0);
}
public void BeginBatch(SpriteAtlas atlas)
{
current = atlas;
if (vao == 0)
{
program = ShaderManager.Get("sprite.shader");
vao = GL.GenVertexArray();
GL.GenBuffers(2, vbo);
GL.BindVertexArray(vao);
GL.BindBuffer(BufferTarget.ArrayBuffer, vbo[0]);
int vertex = program.GetAttribLocation("vertex");
int uv = program.GetAttribLocation("uv");
int position = program.GetAttribLocation("position");
int size = program.GetAttribLocation("size");
int rotation = program.GetAttribLocation("rotation");
int color = program.GetAttribLocation("color");
int stride = BlittableValueType.StrideOf(new SpriteRenderData());
int offset = 0;
GL.EnableVertexAttribArray(vertex);
GL.VertexAttribPointer(vertex, 3, VertexAttribPointerType.Float, false, stride, offset);
offset += Vector3.SizeInBytes;
if(uv != -1)
{
GL.EnableVertexAttribArray(uv);
GL.VertexAttribPointer(uv, 2, VertexAttribPointerType.Float, false, stride, offset);
}
offset += Vector2.SizeInBytes;
if(position != -1)
{
GL.EnableVertexAttribArray(position);
GL.VertexAttribPointer(position, 3, VertexAttribPointerType.Float, false, stride, offset);
}
offset += Vector3.SizeInBytes;
if(size != -1)
{
GL.EnableVertexAttribArray(size);
GL.VertexAttribPointer(size, 2, VertexAttribPointerType.Float, false, stride, offset);
}
offset += Vector2.SizeInBytes;
if(rotation != -1)
{
GL.EnableVertexAttribArray(rotation);
GL.VertexAttribPointer(rotation, 1, VertexAttribPointerType.Float, false, stride, offset);
}
offset += sizeof(float);
if (color != -1)
{
GL.EnableVertexAttribArray(color);
GL.VertexAttribPointer(color, 4, VertexAttribPointerType.Float, false, stride, offset);
}
offset += Vector4.SizeInBytes;
GL.BindBuffer(BufferTarget.ElementArrayBuffer, vbo[1]);
GL.BindVertexArray(0);
}
}