public void SetRenderTargets(ITexture[] colors, ITexture depthStencil)
{
EnsureFramebuffer();
_rtColor0Texture = (TextureBase)colors[0];
_rtDepthTexture = (TextureBase)depthStencil;
for (int index = 0; index < colors.Length; index++)
{
TextureView color = (TextureView)colors[index];
_framebuffer.AttachColor(index, color);
_fpIsBgra[index] = color != null && color.Format.IsBgra8() ? 1 : 0;
}
UpdateFpIsBgra();
TextureView depthStencilView = (TextureView)depthStencil;
_framebuffer.AttachDepthStencil(depthStencilView);
_framebuffer.SetDrawBuffers(colors.Length);
_hasDepthBuffer = depthStencil != null && depthStencilView.Format != Format.S8Uint;
UpdateDepthTest();
}
public void SetTexture(int index, ShaderStage stage, ITexture texture)
{
int unit = _program.GetTextureUnit(stage, index);
if (unit != -1 && texture != null)
{
if (unit == 0)
{
_unit0Texture = (TextureBase)texture;
}
else
{
((TextureBase)texture).Bind(unit);
}
// Update scale factor for bound textures.
switch (stage)
{
case ShaderStage.Fragment:
if (_program.FragmentRenderScaleUniform != -1)
{
// Only update and send sampled texture scales if the shader uses them.
bool interpolate = false;
float scale = texture.ScaleFactor;
if (scale != 1)
{
TextureBase activeTarget = _rtColor0Texture ?? _rtDepthTexture;
if (activeTarget != null && activeTarget.Width / (float)texture.Width == activeTarget.Height / (float)texture.Height)
{
// If the texture's size is a multiple of the sampler size,
// enable interpolation using gl_FragCoord.
// (helps "invent" new integer values between scaled pixels)
interpolate = true;
}
}
_fpRenderScale[index + 1] = interpolate ? -scale : scale;
}
break;
case ShaderStage.Compute:
_cpRenderScale[index] = texture.ScaleFactor;
break;
}
}
}
public void SetImage(int index, ShaderStage stage, ITexture texture)
{
int unit = _program.GetImageUnit(stage, index);
if (unit != -1 && texture != null)
{
TextureBase texBase = (TextureBase)texture;
FormatInfo formatInfo = FormatTable.GetFormatInfo(texBase.Format);
SizedInternalFormat format = (SizedInternalFormat)formatInfo.PixelInternalFormat;
GL.BindImageTexture(unit, texBase.Handle, 0, true, 0, TextureAccess.ReadWrite, format);
}
}
public void SetTexture(int index, ShaderStage stage, ITexture texture)
{
int unit = _program.GetTextureUnit(stage, index);
if (unit != -1 && texture != null)
{
if (unit == 0)
{
_unit0Texture = (TextureBase)texture;
}
else
{
((TextureBase)texture).Bind(unit);
}
}
}