Re: Proper gamma-aware rendering
Posted by Sven Gothel on Dec 19, 2014; 1:03pm
URL: https://forum.jogamp.org/Proper-gamma-aware-rendering-tp4030515p4033786.html
On 12/19/2014 10:03 AM, elect [via jogamp] wrote:
> I think it should be definitely determined at the creation of the opengl context.
>
> As it is written here
> <https://www.opengl.org/sdk/docs/man3/xhtml/glGetFramebufferAttachmentParameter.xml>,
>
>
> / For the default framebuffer, color encoding is determined by the
> implementation.
> /
>
> For example for GLWF3, there is the GLFW_SRGB_CAPABLE propertyThis is not a canonical reference,
hence your assumption would need some reason,
e.g. a EGL, GLX, WGL .. reference.
As I understand, you assume either:
[1] SRGB selection as a context property
This does not exist in the GL spec.
[2] SRGB selection as a pixelformat property
We have to look, but I doubt.
One may select SRGB texture formats, GL spec.
I am unaware of a generic overall SRGB mode,
but if you have information about it (GL, EGL, ..)
that would be great.
~Sven
URL: https://forum.jogamp.org/Proper-gamma-aware-rendering-tp4030515p4033786.html
On 12/19/2014 10:03 AM, elect [via jogamp] wrote:
> I think it should be definitely determined at the creation of the opengl context.
>
> As it is written here
> <https://www.opengl.org/sdk/docs/man3/xhtml/glGetFramebufferAttachmentParameter.xml>,
>
>
> / For the default framebuffer, color encoding is determined by the
> implementation.
> /
>
> For example for GLWF3, there is the GLFW_SRGB_CAPABLE property
hence your assumption would need some reason,
e.g. a EGL, GLX, WGL .. reference.
As I understand, you assume either:
[1] SRGB selection as a context property
This does not exist in the GL spec.
[2] SRGB selection as a pixelformat property
We have to look, but I doubt.
One may select SRGB texture formats, GL spec.
I am unaware of a generic overall SRGB mode,
but if you have information about it (GL, EGL, ..)
that would be great.
~Sven
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