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guvidu

OpenGL GL INVALID OPERATION when writing to a uniform GLSL variable

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guvidu    102
Hello there im new to glsl and write now im trying to write a list of vertices to o vertex shader. the problem is that i get an invalid operation when doing this. below is my code Here is where i write my vertices to the shader

	for(int i = 0; i< pObject->numOfVerts; i++)
			{
				string temp = "vertInfo[" + IntToString(i) + "]";
				cout << temp << endl;
				m_animShader.SetFloat3(m_animShader.GetVariable(temp), pObject->pVerts[i].x, pObject->pVerts[i].y, pObject->pVerts[i].z);
				cout << "scrie " << endl;

				GLenum	enumError;
				enumError = glGetError();

				while(enumError != GL_NO_ERROR)
				{
					cout << gluErrorString(enumError) << endl;
				}
			}


//here is my shader code

#define NUM_OF_VERTS 1452
uniform vec3 vertInfo[NUM_OF_VERTS];

void main()
{
...
}

can you guys point out whats wrong? im writing to the variable vertInfo from the shader in the Initialization opengl function and after i initialized the shader:P Thanks alot

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HuntsMan    368
Well you know, there's a limit in the number of float components and size of uniform variables, 512 is the minimum by the GLSL spec, you're using 1452 * 3 = 4356 float components, which probably is over the limit your video card imposes. So, you get the error :)

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