public void SetData(Bitmap bitmap)
{
Bind();
Size = bitmap.Size;
var data = bitmap.LockBits(
new Rectangle(0, 0, bitmap.Width, bitmap.Height),
ImageLockMode.ReadOnly,
System.Drawing.Imaging.PixelFormat.Format32bppArgb
);
GL.TexImage2D(
TextureTarget.Texture2D,
0,
PixelInternalFormat.Rgba,
bitmap.Width,
bitmap.Height,
0,
OpenTK.Graphics.OpenGL.PixelFormat.Bgra,
PixelType.UnsignedByte,
data.Scan0
);
GLDebug.CheckErrors();
bitmap.UnlockBits(data);
}
public void DrawOne()
{
if (!Ready)
{
return;
}
VAO.Bind();
VBO.Bind();
GL.DrawArrays(PrimitiveType.Triangles, 0, Vertices.Count);
GLDebug.CheckErrors();
VAO.Unbind();
VBO.Unbind();
}
public Shader(Shader.ShaderType type, string name, string code)
{
code = code.Replace("<instances>", GraphicsSettings.MaxBatchInstances.ToString());
Name = name;
Source = code;
ID = GL.CreateShader((OpenTK.Graphics.OpenGL.ShaderType)type);
GLDebug.CheckErrors();
GL.ShaderSource(ID, code);
GL.CompileShader(ID);
#if DEBUG
var log = GL.GetShaderInfoLog(ID);
if (log != null && log != "")
{
throw new ShaderCompileException(this, log);
}
#endif
GLDebug.CheckErrors();
}
public ShaderProgram(params Shader[] shaders)
{
Shaders = shaders;
ID = GL.CreateProgram();
foreach (var shader in shaders)
{
GL.AttachShader(ID, shader.ID);
}
GLDebug.CheckErrors();
GL.LinkProgram(ID);
GLDebug.CheckErrors();
foreach (var shader in shaders)
{
GL.DetachShader(ID, shader.ID);
}
GLDebug.CheckErrors();
}
static void SetAttributes()
{
var slot = 0;
//position
GL.EnableVertexAttribArray(slot);
GL.VertexAttribPointer(slot, 3, VertexAttribPointerType.Float, false, Vertex.Size, 0);
GLDebug.CheckErrors();
slot++;
//uv
GL.EnableVertexAttribArray(slot);
GL.VertexAttribPointer(slot, 2, VertexAttribPointerType.Float, false, Vertex.Size, 12);
GLDebug.CheckErrors();
slot++;
//color
GL.EnableVertexAttribArray(slot);
GL.VertexAttribPointer(slot, 4, VertexAttribPointerType.Float, false, Vertex.Size, 20);
GLDebug.CheckErrors();
slot++;
}
public void BufferData(Vertex[] vertices)
{
Count = vertices.Length;
BufferData(vertices, Vertex.Size * vertices.Length);
GLDebug.CheckErrors();
}
public void Draw()
{
ShaderProgram.DefaultProgram.Bind();
var proj = Matrix4.CreateOrthographicOffCenter(0, Size.Width, Size.Height, 0, -1f, 1f);
ShaderProgram.DefaultProgram.SetUniform("projectionMatrix", ref proj);
GLDebug.CheckErrors();
if (batchPositions.Length < GraphicsSettings.MaxBatchInstances * 3)
{
Array.Resize(ref batchPositions, GraphicsSettings.MaxBatchInstances * 3);
}
if (batchScales.Length < GraphicsSettings.MaxBatchInstances * 3)
{
Array.Resize(ref batchScales, GraphicsSettings.MaxBatchInstances * 3);
}
if (batchUVPositions.Length < GraphicsSettings.MaxBatchInstances * 2)
{
Array.Resize(ref batchUVPositions, GraphicsSettings.MaxBatchInstances * 2);
}
if (batchUVSizes.Length < GraphicsSettings.MaxBatchInstances * 2)
{
Array.Resize(ref batchUVSizes, GraphicsSettings.MaxBatchInstances * 2);
}
Texture2D batchTex = null;
Primitive batchPrim = null;
var batchCount = 0;
var batchStart = 0;
var batchNext = 0;
for (var i = 0; i < Objects.Count; i++)
{
var obj = Objects[i];
if (obj is PrimitiveObject)
{
var po = (PrimitiveObject)obj;
if (po.Primitive != batchPrim || po.Sprite.Texture != batchTex || batchCount >= GraphicsSettings.MaxBatchInstances)
{
if (batchPrim != null && batchCount > 0)
{
_Draw(ShaderProgram, batchPrim, batchTex, batchStart, batchCount);
}
batchPrim = po.Primitive;
batchTex = po.Sprite.Texture;
batchStart = i;
batchCount = 0;
batchNext = 0;
}
batchPositions[batchNext * 3] = obj.Position.X;
batchPositions[batchNext * 3 + 1] = obj.Position.Y;
batchPositions[batchNext * 3 + 2] = obj.Position.Z;
batchScales[batchNext * 3] = po.Scale.X * po.ScaleMultiplier.X;
batchScales[batchNext * 3 + 1] = po.Scale.Y * po.ScaleMultiplier.X;
batchScales[batchNext * 3 + 2] = po.Scale.Z * po.ScaleMultiplier.X;
var uvPos = po.Sprite.Positions[(int)po.Frame];
var w = (float)po.Sprite.Texture.Size.Width;
var h = (float)po.Sprite.Texture.Size.Height;
batchUVPositions[batchNext * 2] = uvPos.X / w;
batchUVPositions[batchNext * 2 + 1] = uvPos.Y / h;
batchUVSizes[batchNext * 2] = po.Sprite.Size.X / w;
batchUVSizes[batchNext * 2 + 1] = po.Sprite.Size.Y / h;
batchNext++;
batchCount++;
}
}
if (batchPrim != null && batchCount > 0)
{
_Draw(ShaderProgram, batchPrim, batchTex, batchStart, batchCount);
}
ShaderProgram.DefaultProgram.Unbind();
}
public void SetUniformVec2Array(string name, float[] v, int count)
{
GL.Uniform2(GetUniformLocation(name), count, v);
GLDebug.CheckErrors();
}
public void SetUniformVec2Array(string name, float[] v)
{
GL.Uniform2(GetUniformLocation(name), v.Length, v);
GLDebug.CheckErrors();
}
public void SetUniform(string name, ref Matrix4 v)
{
GL.UniformMatrix4(GetUniformLocation(name), false, ref v);
GLDebug.CheckErrors();
}
public void SetUniform(string name, Vector4 v)
{
GL.Uniform4(GetUniformLocation(name), v);
GLDebug.CheckErrors();
}
public void SetUniform(string name, float v)
{
GL.Uniform1(GetUniformLocation(name), v);
GLDebug.CheckErrors();
}
