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I tried searching on the web but couldn't find a reason for this. When I render an object close to the camera, the object and texture renders fine. But further away from a fixed distance, it starts showing weird color lines on the texture.

Close to the camera, no lines:

Further away, color lines appear on texture:

enter image description here

My shaders are pretty simple.

#version 330 core layout (location = 0) in vec3 pos; layout (location = 1) in vec2 tex; uniform mat4 projMatrix; uniform mat4 viewMatrix; out vec2 uvCoord; void main() { gl_Position = projMatrix * viewMatrix * vec4(pos.xyz, 1.0f); uvCoord = tex; } 

#version 330 core out vec4 FragColor; uniform sampler2D texture1; in vec2 uvCoord; void main() { FragColor = texture(texture1, uvCoord); } 

My texture parameters are:

glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); 

Any help would be appreciated!

Edit: I have generated mipmaps using glGenerateMipmap(GL_TEXTURE_2D)

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    \$\begingroup\$ Try turning mipmapping on \$\endgroup\$ Commented Jun 25, 2019 at 4:24
  • \$\begingroup\$ @Bálint I have. glGenerateMipmap(GL_TEXTURE_2D); \$\endgroup\$ Commented Jun 25, 2019 at 5:35
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    \$\begingroup\$ You aren't using them. Put "GL_LINEAR_MIPMAP_LINEAR" as the min filter \$\endgroup\$ Commented Jun 25, 2019 at 6:40
  • \$\begingroup\$ @Bálint, that looks like an answer to me. ;) \$\endgroup\$ Commented Jun 25, 2019 at 11:02

1 Answer 1

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You forgot to actually use the generated mip maps. You need to pass GL_LINEAR_MIPMAP_LINEAR (or any of the 3 alternatives) as the third argument when setting the min filter.

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