private static GLTexture BindGLTexture(STGenericTexture texture, STGenericTextureMap textureMap, ShaderProgram shader)
{
if (texture.RenderableTex == null)
{
texture.LoadRenderableTexture();
}
if (texture.RenderableTex == null)
{
return(null);
}
var target = ((GLTexture)texture.RenderableTex).Target;
GL.BindTexture(target, texture.RenderableTex.ID);
GL.TexParameter(target, TextureParameterName.TextureWrapS, (int)OpenGLHelper.WrapMode[textureMap.WrapU]);
GL.TexParameter(target, TextureParameterName.TextureWrapT, (int)OpenGLHelper.WrapMode[textureMap.WrapV]);
GL.TexParameter(target, TextureParameterName.TextureMinFilter, (int)OpenGLHelper.MinFilter[textureMap.MinFilter]);
GL.TexParameter(target, TextureParameterName.TextureMagFilter, (int)OpenGLHelper.MagFilter[textureMap.MagFilter]);
GL.TexParameter(target, TextureParameterName.TextureLodBias, textureMap.LODBias);
GL.TexParameter(target, TextureParameterName.TextureMaxLod, textureMap.MaxLOD);
GL.TexParameter(target, TextureParameterName.TextureMinLod, textureMap.MinLOD);
int[] mask = new int[4]
{
OpenGLHelper.GetSwizzle(texture.RedChannel),
OpenGLHelper.GetSwizzle(texture.GreenChannel),
OpenGLHelper.GetSwizzle(texture.BlueChannel),
OpenGLHelper.GetSwizzle(texture.AlphaChannel),
};
GL.TexParameter(target, TextureParameterName.TextureSwizzleRgba, mask);
return((GLTexture)texture.RenderableTex);
}
static void BindTexture(STGenericTexture tex)
{
if (tex == null)
{
return;
}
if (tex.RenderableTex == null)
{
tex.LoadRenderableTexture();
}
var target = ((GLTexture)tex.RenderableTex).Target;
var texID = tex.RenderableTex.ID;
if (tex.Platform.OutputFormat == TexFormat.BC5_SNORM)
{
if (!GLTextureCache.DecodedFormats.ContainsKey(texID))
{
var reloaded = GLTexture2D.FromGeneric(tex, new ImageParameters()
{
UseSoftwareDecoder = (tex.Platform.OutputFormat == TexFormat.BC5_SNORM),
});
GLTextureCache.DecodedFormats.Add(texID, reloaded.ID);
}
texID = GLTextureCache.DecodedFormats[texID];
}
//Fixed mip layer with nearest setting
GL.BindTexture(target, texID);
GL.TexParameter(target, TextureParameterName.TextureMinFilter, (int)TextureMinFilter.Nearest);
GL.TexParameter(target, TextureParameterName.TextureMagFilter, (int)TextureMagFilter.Nearest);
GL.TexParameter(target, TextureParameterName.TextureMaxLod, (int)15);
GL.TexParameter(target, TextureParameterName.TextureMinLod, (int)mipLevel);
int[] mask = new int[4] {
(int)All.Red, (int)All.Green, (int)All.Blue, (int)All.Alpha
};
if (ImageEditor.UseChannelComponents)
{
mask = new int[4]
{
OpenGLHelper.GetSwizzle(tex.RedChannel),
OpenGLHelper.GetSwizzle(tex.GreenChannel),
OpenGLHelper.GetSwizzle(tex.BlueChannel),
//For now prevent full disappearance of zero alpha types on alpha channel.
//This is typically used on BC4 and BC5 types when not using alpha data.
tex.AlphaChannel == STChannelType.Zero ? 1 : OpenGLHelper.GetSwizzle(tex.AlphaChannel),
};
}
GL.TexParameter(target, TextureParameterName.TextureSwizzleRgba, mask);
}
public static int CreateTextureRender(STGenericTexture texture, int width, int height, bool displayAlpha = true)
{
if (texture.RenderableTex == null)
{
texture.LoadRenderableTexture();
}
if (texture.RenderableTex == null)
{
return(-1);
}
int ID = texture.RenderableTex.ID;
if (texture.Platform.OutputFormat == TexFormat.BC5_SNORM)
{
var reloaded = GLTexture2D.FromGeneric(texture, new ImageParameters()
{
UseSoftwareDecoder = (texture.Platform.OutputFormat == TexFormat.BC5_SNORM),
});
ID = reloaded.ID;
}
var shader = GlobalShaders.GetShader("TEXTURE_ICON");
Framebuffer frameBuffer = new Framebuffer(FramebufferTarget.Framebuffer, width, height, PixelInternalFormat.Rgba, 1);
frameBuffer.Bind();
GL.ClearColor(0, 0, 0, 0);
GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
GL.Viewport(0, 0, width, height);
GL.Disable(EnableCap.Blend);
shader.Enable();
shader.SetBoolToInt("isSRGB", texture.IsSRGB);
int[] mask = new int[4]
{
OpenGLHelper.GetSwizzle(texture.RedChannel),
OpenGLHelper.GetSwizzle(texture.GreenChannel),
OpenGLHelper.GetSwizzle(texture.BlueChannel),
OpenGLHelper.GetSwizzle(displayAlpha ? texture.AlphaChannel : STChannelType.One),
};
((GLTexture)texture.RenderableTex).Bind();
GL.TexParameter(((GLTexture)texture.RenderableTex).Target, TextureParameterName.TextureSwizzleRgba, mask);
//Draw the texture onto the framebuffer
ScreenQuadRender.Draw(shader, ID);
//Disable shader and textures
GL.UseProgram(0);
GL.BindTexture(TextureTarget.Texture2D, 0);
var image = (GLTexture2D)frameBuffer.Attachments[0];
return(image.ID);
/* //Dispose frame buffer
* frameBuffer.Dispoe();
* frameBuffer.DisposeRenderBuffer();*/
}