What is the essential difference between 3D modeling and rendering?

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In popular understanding, the model builds a house, renders the decoration.

You need to have a model before you can render it

From the perspective of 3D content production, excluding post-production, rendering is the last process of CG, and it is also the stage that finally makes the image conform to the 3D scene.

First, the camera in the 3D scene must be positioned, which is the same as a realistic rendering;

Next, to capture the sense of space, the renderer needs to decide which objects are in front, which are behind, and which are occluded;

Once the renderer has obtained the range to be rendered from the camera, it calculates the effect of the light source on the object.

After that, do you use depth map shadows or ray-traced shadows? This often depends on whether or not objects with transparent materials are used in the scene to calculate the shadows cast by the light. In addition, after using area lights, the renderer needs to calculate a special type of shadow, soft shadows (ray tracing can only be used).

In addition, the renderer needs to calculate the color of the object's surface based on the object's material. Different types of materials, different attributes, and different textures will produce different effects.

3D rendering is a computer-calculated way to present a 2D realistic image from a 3D model mesh, including light and auxiliary light, material and texture of materials, camera-related settings and other comprehensive variables. 3D rendering can be rendered on a native computer, but it is inefficient and takes a long time to render. Anxious projects and scene projects can try cloud rendering, which can be rendered in batches and produce results in batches, saving rendering time, improving work efficiency, and getting twice the result with half the effort.

3D rendering can achieve a better experience by adjusting the surrounding environment, such as sound, lighting, and position, which is a future trend.

3D modeling rendering is a computer calculation method to present a 2D realistic image from the 3D model mesh, including light and auxiliary light, material and texture of materials, camera-related settings and other comprehensive variables.

3D rendering can be rendered on a native computer, but it has a low offshoot rate and a long rendering time. Anxious projects and scene projects can try cloud rendering, which can be rendered in batches and produce results in batches, saving rendering time, improving work efficiency, and getting twice the result with half the effort.

Image rendering process.

Before rendering the image, you need to prepare the 3D geometry information, 3D animation definition information, and material information.

Among them, the three-dimensional geometric model of the first stove is obtained through 3D scanning, 3D interactive geometric modeling and 3D model library; 3D animation definitions are obtained from motion design, motion capture, motion calculations, and dynamic deformation, and materials are obtained from scanned images, computer-calculated images, and human-drawn drawings.

The work to be done in image rendering is to generate an image through geometric transformation, projection transformation, perspective transformation, and window clipping, and then through the obtained material and light information. After the image is rendered, the image information will be output to the image file or ** file, or the frame buffer of the display device to complete the graphics generation.

D rendering is a computer-calculated way to present a model from a 3D model mesh to a 2D realistic image, including light and auxiliary light, material and texture of materials, camera-related settings and other comprehensive variables. 3D rendering can be rendered on the local computer, but the efficiency is low, and the rendering of the car is pure for a long time.

From the perspective of 3D content production, excluding post-production, rendering is the last process of CG, and it is also the stage that finally makes the image conform to the 3D scene.

Visualization and product prototyping. One of the most obvious use cases for 3D rendering is, of course, 3D visualization, which is designed to help business owners prevent major defects or defects in the early production stages. Branding, marketing and promotion.