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Results tagged with cg
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user 48391
CG is a programming language for 3D graphics that runs on the GPU. It was designed by NVIDIA and Microsoft. It stands for "C for graphics"
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Accessing uniform variables from a Cg shader in OpenGL
I am trying to implement a simple PC program with OpenGL, using mandatorily Cg shaders (no Unity whatsoever). … I have already searched by myself (including the Nvidia Cg 'tutorial') but I can't seem to find both Cg and OpenGL discussed on a page without having to deal with Unity. …
- 133
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Accessing uniform variables from a Cg shader in OpenGL
First (after preparing the GL window) you have to initialize the Cg stuff:
myCgContext = cgCreateContext();
myCgVertexProfile = cgGLGetLatestProfile(CG_GL_VERTEX);
cgGLSetOptimalOptions(myCgVertexProfile … I have declared: "uniform sampler2D tex;"
cgGLSetTextureParameter(loctex, IDtex[1]); // IDtex is my array of texture IDs
cgGLEnableTextureParameter(loctex);
You can find more examples of accessing Cg …
- 133
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GLSL to Cg fragment shader
Unfortunately, I cannot manage to adapt a GLSL fragment shader to my project, which uses Cg. … To debug, I have a function that catches Cg errors, and my program breaks at this point. I have identified the two texture IDs in the main program.
Can you suggest any improvement for this Cg shader? …
- 133
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Accepted
GLSL to Cg: why is the effect different?
The shader was fine. But when I tried to use other shaders I realized what was wrong.
It was the C++ code that was lacking lines (rrr!! This is the reason why I hate shaders! It's so complicated to m …
- 133
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GLSL to Cg: why is the effect different?
The effect can be shown here, through a GLSL shader:
But when I use the equivalent Cg shader, the result becomes this:
Using the same images (color map + normal map) and the same code (except the … light_pos), 0.0);
vec3 color = diffuse * texture2D(color_texture, gl_TexCoord[0].st).rgb;
// Set the output color of our current pixel
gl_FragColor = vec4(color, 1.0);
}
And here is the Cg …
- 133