private void ReadCompressedImage(ref Action glCommands, BinaryReader reader, int level, int width, int height, int linearSize, UInt32 pfFourCC)
{
var pif = (PixelInternalFormat)All.CompressedRgbS3tcDxt1Ext;
switch ((DDSFourCC)pfFourCC)
{
case DDSFourCC.DXT1:
pif = (PixelInternalFormat)All.CompressedRgbS3tcDxt1Ext;
break;
case DDSFourCC.DXT3:
pif = (PixelInternalFormat)All.CompressedRgbaS3tcDxt3Ext;
break;
case DDSFourCC.DXT5:
pif = (PixelInternalFormat)All.CompressedRgbaS3tcDxt5Ext;
break;
default:
throw new InvalidDataException("Unsupported texture format");
}
var buffer = ReadTextureData(reader, linearSize);
glCommands += () => {
PlatformRenderer.PushTexture(handle, 0);
GL.CompressedTexImage2D(TextureTarget.Texture2D, level, pif, width, height, 0, buffer.Length, buffer);
PlatformRenderer.PopTexture(0);
PlatformRenderer.CheckErrors();
};
}
private void SetTextureParameter(TextureParameterName name, int value)
{
if (handle == 0)
{
return;
}
PlatformRenderer.PushTexture(handle, 0);
GL.TexParameter(TextureTarget.Texture2D, name, value);
PlatformRenderer.PopTexture(0);
}
/// <summary>
/// Load subtexture from pixel array
/// Warning: this method doesn't support automatic texture reload after restoring graphics context
/// </summary>
public void LoadSubImage(Color4[] pixels, int x, int y, int width, int height)
{
Application.InvokeOnMainThread(() => {
PrepareOpenGLTexture();
PlatformRenderer.PushTexture(handle, 0);
GL.TexSubImage2D(TextureTarget.Texture2D, 0, x, y, width, height,
PixelFormat.Rgba, PixelType.UnsignedByte, pixels);
PlatformRenderer.CheckErrors();
PlatformRenderer.PopTexture(0);
});
}
private void CreateTexture()
{
if (!Application.CurrentThread.IsMain())
{
throw new Lime.Exception("Attempt to create a RenderTexture not from the main thread");
}
var t = new uint[1];
GL.GenFramebuffers(1, t);
framebuffer = t[0];
GL.GenTextures(1, t);
handle = t[0];
PlatformRenderer.PushTexture(handle, 0);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, textureParams.MinFilter.ToInt());
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, textureParams.MagFilter.ToInt());
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapS, textureParams.WrapModeU.ToInt());
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapT, textureParams.WrapModeV.ToInt());
int bpp;
if (Format == RenderTextureFormat.RGBA8)
{
GL.TexImage2D(TextureTarget.Texture2D, 0, PixelInternalFormat.Rgba, size.Width, size.Height, 0, PixelFormat.Rgba, PixelType.UnsignedByte, (IntPtr)null);
bpp = 4;
}
else
{
GL.TexImage2D(TextureTarget.Texture2D, 0, PixelInternalFormat.Rgb, size.Width, size.Height, 0, PixelFormat.Rgb, PixelType.UnsignedShort565, (IntPtr)null);
bpp = 2;
}
MemoryUsed = SurfaceSize.Width * SurfaceSize.Height * bpp;
uint oldFramebuffer = PlatformRenderer.CurrentFramebuffer;
PlatformRenderer.BindFramebuffer(framebuffer);
PlatformRenderer.CheckErrors();
GL.FramebufferTexture2D(
FramebufferTarget.Framebuffer,
FramebufferSlot.ColorAttachment0,
TextureTarget.Texture2D,
handle,
level: 0);
if ((int)GL.CheckFramebufferStatus(FramebufferTarget.Framebuffer) != (int)FramebufferErrorCode.FramebufferComplete)
{
throw new Exception("Failed to create render texture. Framebuffer is incomplete.");
}
AttachRenderBuffer(FramebufferSlot.DepthAttachment, RenderbufferInternalFormat.DepthComponent16, out depthBuffer);
Renderer.Clear(0, 0, 0, 0);
PlatformRenderer.PopTexture(0);
PlatformRenderer.BindFramebuffer(oldFramebuffer);
PlatformRenderer.CheckErrors();
}
private void ReadRGBAImage(ref Action glCommands, BinaryReader reader, int level, int width, int height, int pitch)
{
if (pitch != width * 4)
{
throw new InvalidDataException("Error reading RGBA texture. Must be 32 bit rgba");
}
var buffer = ReadTextureData(reader, pitch * height);
glCommands += () => {
PlatformRenderer.PushTexture(handle, 0);
GL.TexImage2D(TextureTarget.Texture2D, level, PixelInternalFormat.Rgba, width, height, 0,
PixelFormat.Rgba, PixelType.UnsignedByte, buffer);
PlatformRenderer.PopTexture(0);
PlatformRenderer.CheckErrors();
};
}
public void LoadImage(IntPtr pixels, int width, int height)
{
if (!Application.CurrentThread.IsMain())
{
throw new InvalidOperationException();
}
PrepareOpenGLTexture();
PlatformRenderer.PushTexture(handle, 0);
GL.TexImage2D(TextureTarget.Texture2D, 0, PixelInternalFormat.Rgba, width, height, 0, PixelFormat.Rgba, PixelType.UnsignedByte, pixels);
MemoryUsed = 4 * width * height;
PlatformRenderer.PopTexture(0);
PlatformRenderer.CheckErrors();
ImageSize = new Size(width, height);
SurfaceSize = ImageSize;
uvRect = new Rectangle(0, 0, 1, 1);
}
private void PrepareOpenGLTexture()
{
// Generate a new texture.
if (handle == 0)
{
var t = new int[1];
GL.GenTextures(1, t);
handle = (uint)t[0];
}
PlatformRenderer.PushTexture(handle, 0);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, textureParams.MinFilter.ToInt());
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, textureParams.MagFilter.ToInt());
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapS, textureParams.WrapModeU.ToInt());
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapT, textureParams.WrapModeV.ToInt());
PlatformRenderer.PopTexture(0);
PlatformRenderer.CheckErrors();
}
private void InitWithPVRTexture(BinaryReader reader)
{
var version = reader.ReadUInt32();
if (version != PVRMagic)
{
throw new Exception("Invalid PVR header");
}
reader.ReadUInt32(); // flags
var pixelFormat = (PVRFormat)reader.ReadUInt64();
reader.ReadUInt32(); // color space
reader.ReadUInt32(); // channel type
var height = reader.ReadInt32();
var width = reader.ReadInt32();
reader.ReadUInt32(); // depth
reader.ReadUInt32(); // num surfaces
reader.ReadUInt32(); // num faces
var numMipmaps = reader.ReadInt32();
var metaDataSize = reader.ReadInt32();
if (metaDataSize > 0)
{
reader.ReadChars(metaDataSize);
}
SurfaceSize = ImageSize = new Size(width, height);
Action glCommands = PrepareOpenGLTexture;
MemoryUsed = 0;
for (int i = 0; i < numMipmaps; i++)
{
if (i > 0 && (width < 8 || height < 8))
{
continue;
}
// Cloning variables to prevent wrong capturing
int mipLevel = i;
int width2 = width;
int height2 = height;
switch (pixelFormat)
{
#if iOS
case PVRFormat.PVRTC_4_RGBA: {
var buffer = ReadTextureData(reader, width * height * 4 / 8);
glCommands += () => {
PlatformRenderer.PushTexture(handle, 0);
GL.CompressedTexImage2D(All.Texture2D, mipLevel, All.CompressedRgbaPvrtc4Bppv1Img, width2, height2, 0, buffer.Length, buffer);
PlatformRenderer.PopTexture(0);
PlatformRenderer.CheckErrors();
};
break;
}
case PVRFormat.PVRTC_2_RGBA: {
if (i > 0 && height < 16)
{
continue;
}
var buffer = ReadTextureData(reader, width * height * 2 / 8);
glCommands += () => {
PlatformRenderer.PushTexture(handle, 0);
GL.CompressedTexImage2D(All.Texture2D, mipLevel, All.CompressedRgbaPvrtc2Bppv1Img, width2, height2, 0, buffer.Length, buffer);
PlatformRenderer.PopTexture(0);
PlatformRenderer.CheckErrors();
};
break;
}
#elif ANDROID
case PVRFormat.ETC1: {
var buffer = ReadTextureData(reader, width * height * 4 / 8);
glCommands += () => {
PlatformRenderer.PushTexture(handle, 0);
GL.CompressedTexImage2D(All.Texture2D, mipLevel, All.Etc1Rgb8Oes, width2, height2, 0, buffer.Length, buffer);
PlatformRenderer.PopTexture(0);
PlatformRenderer.CheckErrors();
};
break;
}
#endif
case PVRFormat.RGBA4444: {
var buffer = ReadTextureData(reader, width * height * 2);
glCommands += () => {
PlatformRenderer.PushTexture(handle, 0);
GL.TexImage2D(TextureTarget.Texture2D, mipLevel, PixelInternalFormat.Rgba, width2, height2, 0, PixelFormat.Rgba, PixelType.UnsignedShort4444, buffer);
PlatformRenderer.PopTexture(0);
PlatformRenderer.CheckErrors();
};
break;
}
case PVRFormat.RGB565: {
var buffer = ReadTextureData(reader, width * height * 2);
glCommands += () => {
PlatformRenderer.PushTexture(handle, 0);
GL.TexImage2D(TextureTarget.Texture2D, mipLevel, PixelInternalFormat.Rgb, width2, height2, 0, PixelFormat.Rgb, PixelType.UnsignedShort565, buffer);
PlatformRenderer.PopTexture(0);
PlatformRenderer.CheckErrors();
};
break;
}
case PVRFormat.RGBA8888: {
var buffer = ReadTextureData(reader, width * height * 4);
glCommands += () => {
PlatformRenderer.PushTexture(handle, 0);
GL.TexImage2D(TextureTarget.Texture2D, mipLevel, PixelInternalFormat.Rgba, width2, height2, 0, PixelFormat.Rgba, PixelType.UnsignedByte, buffer);
PlatformRenderer.PopTexture(0);
PlatformRenderer.CheckErrors();
};
break;
}
default:
throw new NotImplementedException();
}
width /= 2;
height /= 2;
}
Application.InvokeOnMainThread(glCommands);
}
private void InitWithKTXTexture(BinaryReader reader)
{
var identifier = reader.ReadBytes(12);
if (identifier[1] != 'K' || identifier[2] != 'T' || identifier[3] != 'X')
{
throw new InvalidDataException("Invalid KTX header");
}
var endiannes = reader.ReadUInt32();
if (endiannes != 0x04030201)
{
throw new InvalidDataException("Unsupported endiannes");
}
var glType = reader.ReadInt32();
var glTypeSize = reader.ReadInt32();
var glFormat = reader.ReadInt32();
var glInternalFormat = reader.ReadInt32();
var glBaseInternalFormat = reader.ReadInt32();
var pixelWidth = reader.ReadInt32();
var pixelHeight = reader.ReadInt32();
var pixelDepth = reader.ReadInt32();
var numberOfArrayElements = reader.ReadInt32();
var numberOfFaces = reader.ReadInt32();
var numberOfMipmapLevels = reader.ReadInt32();
var bytesOfKeyValueData = reader.ReadInt32();
reader.ReadBytes(bytesOfKeyValueData);
if (numberOfArrayElements != 0)
{
throw new InvalidDataException("Array textures are not supported");
}
if (numberOfFaces != 1)
{
throw new InvalidDataException("Cubemap textures are not supported");
}
if (pixelDepth != 0)
{
throw new InvalidDataException("3D Textures are not supported");
}
if ((pixelWidth & 3) != 0 || (pixelHeight & 3) != 0)
{
throw new InvalidDataException("Texture dimensions should multiple of 4");
}
SurfaceSize = ImageSize = new Size(pixelWidth, pixelHeight);
Action glCommands = PrepareOpenGLTexture;
PrepareOpenGLTexture();
for (int i = 0; i < Math.Max(1, numberOfMipmapLevels); i++)
{
var dataLength = reader.ReadInt32();
MemoryUsed = 0;
if (i > 0 && (pixelWidth < 8 || pixelHeight < 8))
{
continue;
}
// Copy variables because they will be captured.
int mipLevel = i;
int width = pixelWidth;
int height = pixelHeight;
if (glFormat == 0)
{
var data = ReadTextureData(reader, dataLength);
glCommands += () => {
if (!etc2Checked)
{
etc2Checked = true;
if (PlatformRenderer.GetGLESMajorVersion() >= 3)
{
etc2Supported = true;
}
else
{
var ext = GL.GetString(StringName.Extensions);
etc2Supported = ext?.Contains("ETC2_RGBA8") ?? false;
}
Debug.Write(etc2Supported ? "ETC2 textures supported." : "ETC2 textures not supported.");
}
PlatformRenderer.PushTexture(handle, 0);
const int etc1Rgb8Oes = 36196;
if (etc2Supported || (Application.Platform == PlatformId.Android && glInternalFormat == etc1Rgb8Oes))
{
GL.CompressedTexImage2D(
TextureTarget.Texture2D, mipLevel, (PixelInternalFormat)glInternalFormat,
width, height, 0, dataLength, data);
}
else
{
var rgba8Data = Marshal.AllocHGlobal(width * height * 4);
Etc2Decoder.Decode(data, rgba8Data, width, height, glInternalFormat);
GL.TexImage2D(TextureTarget.Texture2D, mipLevel, PixelInternalFormat.Rgba, width, height, 0, PixelFormat.Rgba, PixelType.UnsignedByte, rgba8Data);
Marshal.FreeHGlobal(rgba8Data);
}
PlatformRenderer.PopTexture(0);
PlatformRenderer.CheckErrors();
};
}
else
{
var data = ReadTextureData(reader, dataLength);
glCommands += () => {
PlatformRenderer.PushTexture(handle, 0);
GL.TexImage2D(
TextureTarget.Texture2D, mipLevel, (PixelInternalFormat)glInternalFormat,
width, height, 0, (PixelFormat)glFormat, (PixelType)glType, data);
PlatformRenderer.PopTexture(0);
PlatformRenderer.CheckErrors();
};
}
pixelWidth /= 2;
pixelHeight /= 2;
}
Application.InvokeOnMainThread(glCommands);
}
