I transferred a opengl shader from NV card to ATI card. However it encouters a problem. Who can tell me why? Thanks.
Vertex Shader:
attribute dvec3 myvertex;
void main()
{
vec4 pos;
pos.x = myvertex.x;
pos.y = myvertex.y;
pos.z = myvertex.z;
pos.w = 1.0;
gl_Position = gl_ModelViewProjectionMatrix * pos;
}
Frag Shader:
void main()
{
gl_FragColor = vec4(1.0,0,0.0,1.0);
}
The result in NV:
http://img.bbs.csdn.net/upload/201308/07/1375859803_251062.png
The result in ATI:
http://img.bbs.csdn.net/upload/201308/07/1375859818_908485.png
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The latest news: I find a solution. I use 3 double variables instead of dvec3. The result on ATI card is correct.
Therefore, I guess maybe dvec3 on ATI has some problems. Could ATI give me a explaination about that?
Thanks.
消息编辑者为：Feixiong Luo
