Podcast
Questions and Answers
What are textures in the context of three-dimensional scenes?
What are textures in the context of three-dimensional scenes?
- Shadows applied to surfaces of geometric shapes
- Colors applied to surfaces of geometric shapes
- Lighting applied to surfaces of geometric shapes
- Images applied to surfaces of geometric shapes (correct)
How many texture coordinate points are specified for the triangle in the given example?
How many texture coordinate points are specified for the triangle in the given example?
- 5
- 3 (correct)
- 4
- 2
What does a (0,0) texture coordinate represent for a vertex in OpenGL?
What does a (0,0) texture coordinate represent for a vertex in OpenGL?
- Top-left side of the texture
- Bottom-left side of the texture (correct)
- Bottom-right side of the texture
- Top-right side of the texture
What is the default behavior of OpenGL if texture coordinates are specified out of the range 0 to 1?
What is the default behavior of OpenGL if texture coordinates are specified out of the range 0 to 1?
How does OpenGL solve the issue of texture (texels) not being precisely the same size as the pixels in the rendered image?
How does OpenGL solve the issue of texture (texels) not being precisely the same size as the pixels in the rendered image?
What is the purpose of texture coordinates in OpenGL?
What is the purpose of texture coordinates in OpenGL?
Which lighting type represents light that has been scattered and will appear lighter or darker in various regions?
Which lighting type represents light that has been scattered and will appear lighter or darker in various regions?
What is the Phong model commonly used for?
What is the Phong model commonly used for?
What does a mipmap consist of?
What does a mipmap consist of?
What does the angle between the direction vector of the light ray and a vector perpendicular to the surface determine?
What does the angle between the direction vector of the light ray and a vector perpendicular to the surface determine?
What is the purpose of mipmapping in OpenGL?
What is the purpose of mipmapping in OpenGL?
What happens if you specify texture coordinates out of the range 0 to 1 in OpenGL?
What happens if you specify texture coordinates out of the range 0 to 1 in OpenGL?
How many texture coordinate points are typically passed to the vertex shader for interpolation in OpenGL?
How many texture coordinate points are typically passed to the vertex shader for interpolation in OpenGL?
What does it mean if a mipmap is used in OpenGL?
What does it mean if a mipmap is used in OpenGL?
What coordinates should be used for the top-right vertex of a triangle to correspond with the top-right side of a texture image in OpenGL?
What coordinates should be used for the top-right vertex of a triangle to correspond with the top-right side of a texture image in OpenGL?
What is the purpose of a mipmap in the context of texture mapping?
What is the purpose of a mipmap in the context of texture mapping?
What is the main function of texture coordinates in OpenGL?
What is the main function of texture coordinates in OpenGL?
What does the Phong model, commonly used for reflective or shiny surfaces, combine in its illumination model?
What does the Phong model, commonly used for reflective or shiny surfaces, combine in its illumination model?
What is the role of ambient lighting in a scene?
What is the role of ambient lighting in a scene?
How are texture coordinates represented in OpenGL for the lower-left and upper-right corners of a texture image?
How are texture coordinates represented in OpenGL for the lower-left and upper-right corners of a texture image?