[SOLVED] Porting shader from OSX to Windows 8

beginners
#1

Hi all,
I have a simple masking shader that works on OSX, but doesn’t seem to compile with VS2012 on Windows 8.
I’m not very experienced with shaders and Windows so I was hoping to be able get some help with this?

Here’s my shader code in the frag file:

uniform sampler2DRect mask;
uniform sampler2DRect image;

void main() {

    vec4 coords = gl_TexCoords[0];
    vec4 mask_pixel = texture2DRect(mask, coords.xy);
    vec4 image_pixel = texture2DRect(image, coords.xy);

    vec4 color = vec4(image_pixel.r, image_pixel.g, image_pixel.b, mask_pixel.r);

    gl_FragColor = color;

}

and heres the vert file:

uniform float limit;

void main() {
    gl_TexCoord[0] = gl_MultiTexCoord0;
    gl_Position = gl_ProjectionMatrix * gl_ModelViewMatrix * gl_Vertex;
}

Thanks in advance!
cherd

#2

It seems that it’s something to do with incompatible lines? I’m digging deeper…
I get similar errors when trying to load the shaders in the shader tutorials that accompany the OF repo on github. Perhaps its a Windows 8 issue.

Any help will be greatly appreciated!

#3

Hey mate, Can you post the errors you get?

#4

Heya Dave!

Forum was down this evening from here so couldn’t reply.
Managed to get it fixed with the help of @trentbrooks !

It seems I needed some extensions enabled, and that some of the classes used were of older versions. Here’s the working shader:

#version 120
#extension GL_ARB_texture_rectangle : enable

uniform sampler2DRect mask;
uniform sampler2DRect image;

varying vec2 texCoordVarying;

void main() {
    
    vec4 mask_pixel = texture2DRect(mask, texCoordVarying);
    vec4 image_pixel = texture2DRect(image, texCoordVarying);
    
    vec4 color = vec4(image_pixel.r, image_pixel.g, image_pixel.b, mask_pixel.r);
    
    gl_FragColor = color;

}

and the vert file:

#version 120

uniform float limit;

varying vec2 texCoordVarying;

void main() {
    texCoordVarying = gl_MultiTexCoord0.xy;
    gl_Position = ftransform();
}

Thanks for checking in though… hope the fam is doing well.