/// <summary>
/// Internal method to create a warning texture (bound when a texture unit is blank)
/// </summary>
protected void CreateWarningTexture()
{
// Generate warning texture
int width = 8;
int height = 8;
// TODO convert to 5_6_5
unsafe
{
int *data = stackalloc int[width * height]; // 0xXXRRGGBB
//yellow / black stripes
for (int y = 0; y < height; ++y)
{
for (int x = 0; x < width; ++x)
{
data[y * width + x] = (((x + y) % 8) < 4) ? 0x000000 : 0xFFFF00;
}
}
// Create GL resource
OpenGL.GenTextures(1, ref this._warningTextureID);
GLESConfig.GlCheckError(this);
OpenGL.BindTexture(All.Texture2D, this._warningTextureID);
GLESConfig.GlCheckError(this);
OpenGL.TexImage2D(All.Texture2D, 0, (int)All.Rgb, width, height, 0, All.Rgb, All.UnsignedByte, (IntPtr)data);
GLESConfig.GlCheckError(this);
}
}
private void CreateTexHandle()
{
int[] textureIds = new int[1];
GL.GenTextures(2, textureIds);
TexHandle = textureIds[0];
}
/// <summary>
/// </summary>
protected override void createInternalResources()
{
// Convert to nearest power-of-two size if required
Width = GLESPixelUtil.OptionalPO2(Width);
Height = GLESPixelUtil.OptionalPO2(Height);
Depth = GLESPixelUtil.OptionalPO2(Depth);
//adjust format if required
Format = TextureManager.Instance.GetNativeFormat(Graphics.TextureType.TwoD, Format, Usage);
// Check requested number of mipmaps
int maxMips = GLESPixelUtil.GetMaxMipmaps(Width, Height, Depth, Format);
if (PixelUtil.IsCompressed(Format) && _mipmapCount == 0)
{
RequestedMipmapCount = 0;
}
_mipmapCount = RequestedMipmapCount;
if (_mipmapCount > maxMips)
{
_mipmapCount = maxMips;
}
// Generate texture name
OpenGL.GenTextures(1, ref this._textureID);
GLESConfig.GlCheckError(this);
// Set texture type
OpenGL.BindTexture(All.Texture2D, this._textureID);
GLESConfig.GlCheckError(this);
// Set some misc default parameters, these can of course be changed later
OpenGL.TexParameter(All.Texture2D, All.TextureMinFilter, (int)All.LinearMipmapNearest);
GLESConfig.GlCheckError(this);
OpenGL.TexParameter(All.Texture2D, All.TextureMagFilter, (int)All.Nearest);
GLESConfig.GlCheckError(this);
OpenGL.TexParameter(All.Texture2D, All.TextureWrapS, (int)All.ClampToEdge);
GLESConfig.GlCheckError(this);
OpenGL.TexParameter(All.Texture2D, All.TextureWrapT, (int)All.ClampToEdge);
GLESConfig.GlCheckError(this);
// If we can do automip generation and the user desires this, do so
MipmapsHardwareGenerated = Root.Instance.RenderSystem.HardwareCapabilities.HasCapability(Capabilities.HardwareMipMaps) && !PixelUtil.IsCompressed(Format);
if ((Usage & TextureUsage.AutoMipMap) == TextureUsage.AutoMipMap && RequestedMipmapCount > 0 && MipmapsHardwareGenerated)
{
OpenGL.TexParameter(All.Texture2D, All.GenerateMipmap, (int)All.True);
GLESConfig.GlCheckError(this);
}
// Allocate internal buffer so that TexSubImageXD can be used
// Internal format
All format = GLESPixelUtil.GetClosestGLInternalFormat(Format, HardwareGammaEnabled);
int width = Width;
int height = Height;
int depth = Depth;
if (PixelUtil.IsCompressed(Format))
{
// Compressed formats
int size = PixelUtil.GetMemorySize(Width, Height, Depth, Format);
// Provide temporary buffer filled with zeroes as glCompressedTexImageXD does not
// accept a 0 pointer like normal glTexImageXD
// Run through this process for every mipmap to pregenerate mipmap pyramid
var tmpData = new byte[size];
IntPtr tmpDataptr = Memory.PinObject(tmpData);
for (int mip = 0; mip <= MipmapCount; mip++)
{
size = PixelUtil.GetMemorySize(Width, Height, Depth, Format);
OpenGL.CompressedTexImage2D(All.Texture2D, mip, format, width, height, 0, size, tmpDataptr);
GLESConfig.GlCheckError(this);
if (width > 1)
{
width = width / 2;
}
if (height > 1)
{
height = height / 2;
}
if (depth > 1)
{
depth = depth / 2;
}
}
Memory.UnpinObject(tmpData);
}
else
{
// Run through this process to pregenerate mipmap pyramid
for (int mip = 0; mip <= MipmapCount; mip++)
{
OpenGL.TexImage2D(All.Texture2D, mip, (int)format, width, height, 0, format, All.UnsignedByte, IntPtr.Zero);
GLESConfig.GlCheckError(this);
if (width > 1)
{
width = width / 2;
}
if (height > 1)
{
height = height / 2;
}
}
}
CreateSurfaceList();
// Get final internal format
Format = GetBuffer(0, 0).Format;
}
/// <summary>
/// Detect which internal formats are allowed as RTT Also detect what combinations of stencil and depth are allowed with this internal format.
/// </summary>
private void DetectFBOFormats()
{
// Try all formats, and report which ones work as target
int fb = 0, tid = 0;
All target = All.Texture2D;
for (int x = 0; x < (int)Media.PixelFormat.Count; x++)
{
LogManager.Instance.Write("[GLES] [DEBUG] testing PixelFormat : {0}", (Media.PixelFormat)x);
this._props[x] = new FormatProperties();
this._props[x].Modes = new List <FormatProperties.Mode>();
this._props[x].IsValid = false;
// Fetch GL format token
All fmt = GLESPixelUtil.GetClosestGLInternalFormat((Media.PixelFormat)x);
LogManager.Instance.Write("[GLES] [DEBUG] fmt={0}", fmt);
if (fmt == All.Zero && x != 0)
{
continue;
}
// No test for compressed formats
if (PixelUtil.IsCompressed((Media.PixelFormat)x))
{
continue;
}
// Create and attach framebuffer
OpenGLOES.GenRenderbuffers(1, ref fb);
GLESConfig.GlCheckError(this);
OpenGLOES.BindFramebuffer(All.FramebufferOes, fb);
GLESConfig.GlCheckError(this);
if (fmt != All.Zero)
{
// Create and attach texture
OpenGL.GenTextures(1, ref tid);
GLESConfig.GlCheckError(this);
OpenGL.BindTexture(target, tid);
GLESConfig.GlCheckError(this);
// Set some default parameters
OpenGL.TexParameterx(target, All.TextureMinFilter, (int)All.LinearMipmapNearest);
GLESConfig.GlCheckError(this);
OpenGL.TexParameterx(target, All.TextureMagFilter, (int)All.Nearest);
GLESConfig.GlCheckError(this);
OpenGL.TexParameterx(target, All.TextureWrapS, (int)All.ClampToEdge);
GLESConfig.GlCheckError(this);
OpenGL.TexParameterx(target, All.TextureWrapT, (int)All.ClampToEdge);
GLESConfig.GlCheckError(this);
OpenGL.TexImage2D(target, 0, (int)fmt, ProbeSize, ProbeSize, 0, fmt, All.UnsignedByte, IntPtr.Zero);
GLESConfig.GlCheckError(this);
OpenGLOES.FramebufferTexture2D(All.FramebufferOes, All.ColorAttachment0Oes, target, tid, 0);
GLESConfig.GlCheckError(this);
}
// Check status
All status = OpenGLOES.CheckFramebufferStatus(All.FramebufferOes);
GLESConfig.GlCheckError(this);
LogManager.Instance.Write("[GLES] [DEBUG] status={0}", status);
// Ignore status in case of fmt==GL_NONE, because no implementation will accept
// a buffer without *any* attachment. Buffers with only stencil and depth attachment
// might still be supported, so we must continue probing.
if (fmt == 0 || status == All.FramebufferCompleteOes)
{
this._props[x].IsValid = true;
var str = new StringBuilder();
str.Append("FBO " + PixelUtil.GetFormatName((Media.PixelFormat)x) + " depth/stencil support: ");
// For each depth/stencil formats
for (int depth = 0; depth < DepthFormats.Length; ++depth)
{
if (DepthFormats[depth] != All.Depth24Stencil8Oes)
{
// General depth/stencil combination
for (int stencil = 0; stencil < StencilFormats.Length; ++stencil)
{
if (TryFormat(DepthFormats[depth], StencilFormats[stencil]))
{
/// Add mode to allowed modes
str.Append("D" + DepthBits[depth] + "S" + StencilBits[stencil] + " ");
var mode = new FormatProperties.Mode();
mode.Depth = depth;
mode.Stencil = stencil;
this._props[x].Modes.Add(mode);
}
} //end for stencil
} //end if
else
{
// Packed depth/stencil format
if (TryPacketFormat(DepthFormats[depth]))
{
/// Add mode to allowed modes
str.Append("Packed-D" + DepthBits[depth] + "S8" + " ");
var mode = new FormatProperties.Mode();
mode.Depth = depth;
mode.Stencil = 0; //unused
this._props[x].Modes.Add(mode);
}
}
} //end for depth
LogManager.Instance.Write(str.ToString());
} //end if
// Delete texture and framebuffer
#if AXIOM_PLATFORM_IPHONE
// The screen buffer is 1 on iPhone
OpenGLOES.BindFramebuffer(All.FramebufferOes, 1);
#else
OpenGLOES.BindFramebuffer(All.FramebufferOes, 0);
#endif
GLESConfig.GlCheckError(this);
OpenGLOES.DeleteFramebuffers(1, ref fb);
GLESConfig.GlCheckError(this);
if (fmt != 0)
{
OpenGL.DeleteTextures(1, ref tid);
}
} //end for pixelformat count
string fmtstring = string.Empty;
for (int x = 0; x < (int)Media.PixelFormat.Count; x++)
{
if (this._props[x].IsValid)
{
fmtstring += PixelUtil.GetFormatName((Media.PixelFormat)x);
}
}
LogManager.Instance.Write("[GLES] : Valid FBO targets " + fmtstring);
}