/// Returns the swizzle value for the specified component/coord
TextureSwizzle Swizzle(TextureSwizzleCoord coord) const
{
switch(GLenum(coord))
{
case GL_TEXTURE_SWIZZLE_R:
return SwizzleR();
case GL_TEXTURE_SWIZZLE_G:
return SwizzleG();
case GL_TEXTURE_SWIZZLE_B:
return SwizzleB();
case GL_TEXTURE_SWIZZLE_A:
return SwizzleA();
}
return TextureSwizzle();
}
static TextureSwizzle Convert(VkComponentSwizzle s, int i)
{
switch(s)
{
default: RDCWARN("Unexpected component swizzle value %d", (int)s);
case VK_COMPONENT_SWIZZLE_IDENTITY: break;
case VK_COMPONENT_SWIZZLE_ZERO: return TextureSwizzle::Zero;
case VK_COMPONENT_SWIZZLE_ONE: return TextureSwizzle::One;
case VK_COMPONENT_SWIZZLE_R: return TextureSwizzle::Red;
case VK_COMPONENT_SWIZZLE_G: return TextureSwizzle::Green;
case VK_COMPONENT_SWIZZLE_B: return TextureSwizzle::Blue;
case VK_COMPONENT_SWIZZLE_A: return TextureSwizzle::Alpha;
}
return TextureSwizzle(uint32_t(TextureSwizzle::Red) + i);
}
/// Returns the swizzle value for green component
TextureSwizzle SwizzleG(void) const
{
return TextureSwizzle(_values[1]);
}
/// Returns the swizzle value for red component
TextureSwizzle SwizzleR(void) const
{
return TextureSwizzle(_values[0]);
}
/// Returns the swizzle value for alpha component
TextureSwizzle SwizzleA(void) const
{
return TextureSwizzle(_values[3]);
}
/// Returns the swizzle value for blue component
TextureSwizzle SwizzleB(void) const
{
return TextureSwizzle(_values[2]);
}
