Programmer Think

polygon(1) Both sides of the polygon and how it is drawn.Although we have not really used three-dimensional coordinates to draw drawings, it is necessary to establish some three-dimensional concepts.From a 3D perspective, a polygon has two faces. Each face can be drawn in different ways: fill, draw only edge contours, and draw only vertices. Fi ...

1, Foreword In OpenGL, everything is in 3D space, while the screen and window are 2D pixel arrays. The process of converting 3D coordinates to 2D coordinates is managed by the graphics rendering pipeline of OpenGL. The macro aspect of graphics rendering pipeline: it consists of two main parts. The first part transforms 3D coordinates into 2D ...

Operation requirements: 1. Three texture filtering methods are used to load textures (linear sampling, mipmap and nearest point sampling); 2. The image loaded with texture can be set by yourself; 3. The texture of each face is different; 4. The mouse or keyboard controls the switching of texture filtering methods. Initialize OpenGL Sa ...

High Quality Text RenderingprefaceIt is challenging to retain text of the highest possible quality in real-time 3D graphics. Objects can dynamically change their position, rotation, scale, and viewing angle. All of this has a negative impact on quality because text is usually generated only once, not in each frame. Depending on the font engine ...

1, Purpose of the experiment: 1) Be familiar with and master the principle and implementation process of five basic two-dimensional geometric transformations, including translation, proportion, symmetry, rotation and staggered cutting;2) Be familiar with and master the principle and implementation process of two-dimensional coincidence transfo ...

normal map opengl official documents The core modification is the normal value in the clip shader uniform sampler2D normalMap; void main() { // Get normals from normal map range [0,1] normal = texture(normalMap, fs_in.TexCoords).rgb; // Convert normal vector to range [- 1,1] normal = normalize(normal * 2.0 - 1. ...

I'm not going to go into that much here, but I'm going to look at the cube map mainly from the direction in which the code is going to run. Add Sky Box Vertices float skyboxVertices[] = { // positions -1.0f, 1.0f, -1.0f, -1.0f, -1.0f, -1.0f, 1.0f, -1.0f, -1.0f, 1.0f, -1.0f, -1.0f, 1.0f, 1.0f, -1.0f, ...

Qoopenglshaderprogram encapsulates the compilation process of ShaderProgram. Whether it is loading SourceCode or SourceFile, Qt encapsulation is very good. If it is not encapsulated, the code will be written into the string as shown in the figure below. There is no color identification, and there must be a newline character on each line, which ...