public static void UpdateTexture(int textureId, ColorMap image)
{
GL.BindTexture(TextureTarget.Texture2D, textureId);
ShaderLibrary.PrintGlErrors("UpdateTexture bind");
GL.TexSubImage2D(TextureTarget.Texture2D, 0, 0, 0, image.Width, image.Height,
PixelFormat.Bgra, PixelType.UnsignedByte, image.RawPixels());
ShaderLibrary.PrintGlErrors("UpdateTexture put data");
int level = 1;
foreach (var mipmap in makeMipmaps(image))
{
GL.TexSubImage2D(
TextureTarget.Texture2D, level, 0, 0, mipmap.Width, mipmap.Height,
PixelFormat.Bgra, PixelType.UnsignedByte, mipmap.RawPixels()
);
ShaderLibrary.PrintGlErrors("CreateTexture put mipmap data level " + level);
level++;
}
textureSizes[textureId] = new Vector2(image.Width, image.Height);
GL.GenerateMipmap(GenerateMipmapTarget.Texture2D); //TODO(v0.9) make custom mipmap algorithm
ShaderLibrary.PrintGlErrors("UpdateTexture generate mipmaps");
}
public VertexArray Generate(AGlProgram forProgram)
{
var vao = GL.GenVertexArray();
GL.BindVertexArray(vao);
var vbo = GL.GenBuffer();
GL.BindBuffer(BufferTarget.ArrayBuffer, vbo);
GL.BufferData(BufferTarget.ArrayBuffer, (IntPtr)(this.vertices.Count * sizeof(float)), this.vertices.ToArray(), BufferUsageHint.StaticDraw);
forProgram.SetupAttributes();
GL.BindVertexArray(0);
ShaderLibrary.PrintGlErrors("Generate VAO");
return(new VertexArray(vao, vbo, this.objectStarts, this.objectSizes));
}
public static int CreateTexture(ColorMap image)
{
int textureId = GL.GenTexture();
var maxLevel = (int)Math.Round(Math.Log(Math.Min(image.Width, image.Height), 2));
ShaderLibrary.PrintGlErrors("CreateTexture generate ID");
GL.BindTexture(TextureTarget.Texture2D, textureId);
ShaderLibrary.PrintGlErrors("CreateTexture bind");
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapS, (float)TextureWrapMode.ClampToEdge);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapT, (float)TextureWrapMode.ClampToEdge);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, (float)TextureMinFilter.LinearMipmapLinear);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, (float)TextureMagFilter.Linear);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureBaseLevel, 0);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMaxLevel, maxLevel);
ShaderLibrary.PrintGlErrors("CreateTexture parameters");
GL.TexImage2D(
TextureTarget.Texture2D, 0, PixelInternalFormat.Rgba, image.Width, image.Height,
0, PixelFormat.Bgra, PixelType.UnsignedByte, image.RawPixels()
);
ShaderLibrary.PrintGlErrors("CreateTexture put data");
int level = 1;
foreach (var mipmap in makeMipmaps(image))
{
GL.TexImage2D(
TextureTarget.Texture2D, level, PixelInternalFormat.Rgba, mipmap.Width, mipmap.Height,
0, PixelFormat.Bgra, PixelType.UnsignedByte, mipmap.RawPixels()
);
ShaderLibrary.PrintGlErrors("CreateTexture put mipmap data level " + level);
level++;
}
textureSizes[textureId] = new Vector2(image.Width, image.Height);
return(textureId);
}
public static void DeleteTexture(int textureId)
{
GL.DeleteTexture(textureId);
ShaderLibrary.PrintGlErrors("DeleteTexture");
textureSizes.Remove(textureId);
}