HLSL to GLSL

Graphics and GPU Programming Programming

Started by zootroy June 13, 2006 07:20 PM

5 comments, last by christian h 17 years, 10 months ago

122

Author

June 13, 2006 07:20 PM

Does anyone know if there is a tool that will convert HLSL code to GLSL? I am looking through the ShaderX3 book and many of the examples are in HLSL. I could pick up a ref on HLSL, but if a tool exists... TIA Z

D3DXVECTOR3

147

June 14, 2006 04:41 AM

I dont know about GLSL but i know that CgFX is almost the same as HLSL.

CrazyCdn

1,442

June 14, 2006 10:35 AM

I thought I read something about a Cg to GLSL converter/program on these forums but I couldn't find the thread.

"Those who would give up essential liberty to purchase a little temporary safety deserve neither liberty nor safety." --Benjamin Franklin

nef

129

June 14, 2006 06:06 PM

Quote:Original post by Mike2343
I thought I read something about a Cg to GLSL converter/program on these forums but I couldn't find the thread.

NVIDIA Cg shader language will compile to HLSL or GLSL. It's nice because you write shaders in it and use them in either OpenGL or DirectX applications.

http://developer.nvidia.com/object/cg_toolkit.html

V-man

813

June 14, 2006 11:14 PM

How are you going to use Cg on ATI? It will compile to ARB_vp and ARB_fp which are deprecated now.

I remember someone from nVidia said that you can use the Cg compiler to translate between the languages but sorry, I didn't keep the link. It was on the shading language forum at opengl.org

Sig: http://glhlib.sourceforge.net
an open source GLU replacement library. Much more modern than GLU.
float matrix[16], inverse_matrix[16];
glhLoadIdentityf2(matrix);
glhTranslatef2(matrix, 0.0, 0.0, 5.0);
glhRotateAboutXf2(matrix, angleInRadians);
glhScalef2(matrix, 1.0, 1.0, -1.0);
glhQuickInvertMatrixf2(matrix, inverse_matrix);
glUniformMatrix4fv(uniformLocation1, 1, FALSE, matrix);
glUniformMatrix4fv(uniformLocation2, 1, FALSE, inverse_matrix);

CrazyCdn

1,442

June 15, 2006 02:26 AM

Umm... I thought Cg worked on ATI. I've run Cg scripts on my 9800Pro unless I smoked some really good drugs and just seen it working ;-)

"Those who would give up essential liberty to purchase a little temporary safety deserve neither liberty nor safety." --Benjamin Franklin

christian h

200

June 15, 2006 02:55 AM

Quote:Original post by V-man
How are you going to use Cg on ATI? It will compile to ARB_vp and ARB_fp which are deprecated now.

I remember someone from nVidia said that you can use the Cg compiler to translate between the languages but sorry, I didn't keep the link. It was on the shading language forum at opengl.org

The new beta version has a profile for GLSL. It can also take a GLSL code as input too and convert it to any of the profiles. And as nef stated, Cg is lot like HLSL, so carefully designing the code to be both, you can use Cg to convert the HLSL to GLSL.
GLSL to HLSL is little tougher.

Oh yeah, the link
ch.

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