US5748863 * Oct 6, 1995 May 5, 1998 International Business Machines Corporation Method and system for fast interpolation of depth buffer values in a computer graphics display systemUS5748863 * 1995年10月6日 1998年5月5日 International Business Machines Corporation Method and system for fast ...
A computer graphics system provides for processing image data including Z data for use in displaying three-dimensional images on a display unit. The system includes: a depth buffer providing for temporary storage of Z data; and a graphics processing unit having a graphics engine for generating ...
How to Visualize the Depth Buffer in GLSL Continue reading»
We spend the most time on the z-buffer techniques, because the others are already well known and have ample coverage in computer graphics literature, and because z-buffer techniques are more amenable to rendering in real time on current graphics hardware. 23.2 Ray-Traced Depth of Field...
OpenGL “rejects” occluded pixels by checking whether their Z value is greater than the Z value that’s already in the depth buffer. In pseudocode, the algorithm looks like this: void WritePixel(x, y, z, color) { if (DepthTestDisabled || z < DepthBuffer[x, y]) { DepthBuffer[x, ...
在打开深度测试的情况下,可以通过设置depth mask,禁止写入depth buffer而使用read-only depth buffer: glDepthMask(GL_FALSE); 除了depth test外,其实现代GPUs也允许一些别的测试提前于fragment shader发生,比如: stencil test、The pixel ownership test、scissor test(OpenGL4.2起最后两个总是提前发生)。 References:...
to graphics hardware. Furthermore, z-buffer information is useful in other rendering effects, such as soft particles, because it amortizes the cost of generating a depth image. On the other hand, composition techniques are limited because they cannot be added easily to an existing graph...
The end result of this first pass is a depth buffer containing the scene's depth information from the point of view of the light. This now can be used in pass 2 to determine which pixels are occluded from the light. Figure 3. First pass of basic shadow mapping Pass 2 In the...
are a couple of more things to be noticed: the SSDs have similar speeds of processing files although they differed in IOMeter. And the 64GB model is the faster one here. It’s also interesting that the SSDs cope with small files better. This must be due to the lack of buffer memory....
If no depth stencil buffer is associated with the device, the return value is null. Setting this value to null disables the depth stencil operation.This property is read/write. Remarks The following restrictions apply when using this property. The multisample type must be the same for the ...