so you have a call stack

... lifting for loading and processing texture atlases In this case, you have a texture atlas file called particleAtlas.png and a texture metadata file called particleAtlas.xml The XML file contains the ... that your materials are available, or who knows what you might get You can call this over and over again (for instance, if you leave this scene and come back, this will get called again) because ... There is actually a pretty good chance in a particle system that you will have a few particles that are exactly the same, but I digress How you make each particle unique? As you may have guessed...

Ngày tải lên: 17/03/2014, 23:20

... provides you with an easy-to-use way to gain access to uniform variable(s) and vertex attributes that are automatically assigned by the GPU It also provides an easy-to-use callback mechanism that allows ... object (albeit a very simple object — but hey, that’s a start!) You were able to animate it onscreen using translation and rotation, and you have set up a basic look-at matrix to simulate a camera ... provides an init and exit function callback, which you can just plug your creation and destruction code into The template also provides you with an easy-to-use callback mechanism that acts as a universal...

Ngày tải lên: 22/03/2014, 13:36

... provides you with an easy-to-use way to gain access to uniform variable(s) and vertex attributes that are automatically assigned by the GPU It also provides an easy-to-use callback mechanism that allows ... an intermediate-level book that assumes you are familiar with linear algebra (matrices, vectors, and quaternions), you have a strong C/C++ programming background, you have at least touched base ... template provides an init and exit function callback, which you can just plug your creation and destruction code into The template also provides you with an easy-to-use callback mechanism that acts...

Ngày tải lên: 29/03/2014, 22:20

... non-sequential ways That is, a call to ArrayElement that precedes a change to array data may access the changed data, and a call that follows a change to array data may access original data Specifying ... EnableClientState( enum array ); void DisableClientState( enum array ); with array set to VERTEX ARRAY, NORMAL ARRAY, COLOR ARRAY, INDEX ARRAY, FOG COORD ARRAY, SECONDARY COLOR ARRAY, TEXTURE COORD ARRAY, ... ArrayElement, DrawArrays, DrawElements, DrawRangeElements, MultiDrawArrays, and MultiDrawElements operate as previously defined, except that data for enabled vertex, variant, and attrib arrays are...

Ngày tải lên: 03/11/2012, 11:23

... features such as animation and binary file formats, and in many cases also input handling and sound All the solutions were based on software rendering, so there was no need to standardize hardware ... available for all major 3D content creation tools, such as Lightwave, Blender, Maya, Softimage, and 3ds Max A stand-alone viewer is also available from Feeling Software Adobe uses COLLADA as an import ... Linux, and Windows Mobile, support the installation of third-party native applications Java is also featured on practically all smart phones, and both OpenGL ES and M3G are typically available...

Ngày tải lên: 28/04/2014, 15:49

... products are often claimed as trademarks or registered trademarks In all instances in which Morgan Kaufmann Publishers is aware of a claim, the product names appear in initial capital or all capital ... 3D Graphics with OpenGL ES and M3G This page intentionally left blank Mobile 3D Graphics with OpenGL ES and M3G Kari Pulli Tomi Aarnio Ville Miettinen Kimmo Roimela Jani Vaarala AMSTERDAM • BOSTON ... OXFORD • PARIS • SAN DIEGO SAN FRANCISCO • SINGAPORE • SYDNEY • TOKYO Morgan Kaufmann is an imprint of Elsevier Acquisitions Editor Tiffany Gasbarrini Publishing Services Manager George Morrison Senior...

Ngày tải lên: 03/07/2014, 11:20

... fragment color and alpha as Cf and Af , the texture source color and alpha as Cs and As , and the user-given constant color as Cc and Ac See Figure 3.15 for an example of using each mode The texture ... the fragment color and/or alpha RGBA and LA formats produce (Cs , As ), L and RGB formats give (Cs , Af ), and A format yields (Cf , As ) With the MODULATE function, the source data modulates ... modulates alpha and adds together the fragment and texture source colors RGBA and LA formats produce (Cf + Cs , Af As ), L and RGB formats give (Cf + Cs , Af ), and A format yields (Cf , Af As ) Multitexturing...

Ngày tải lên: 03/07/2014, 11:20

... define an antialiasing algorithm In our graphics pipeline diagram (Figure 3.1), antialiasing relates to the “coverage generation” and “multisampling” boxes F i g u r e 3.21: A square grid cannot accurately ... color with the background color This edge antialiasing approach can an acceptable job when rendering line drawings, but it has several drawbacks Think about the case where two adjacent polygons ... values of the samples, on the other hand, are typically computed and stored separately The OpenGL specification leaves lots of room to different antialiasing approaches; some implementations may...

Ngày tải lên: 03/07/2014, 11:20

... For example, in a shooter game, after you spray a wall with bullets, you may want to paint bullet marks on top of the wall You would try to align the patches with the wall, but want to guarantee ... For example, when drawing transparent, edge-antialiased lines, the alpha is less than one due to transparency, and may be further reduced by partial coverage of a pixel Blend equations and factors ... intensity, and some frame buffers save in memory costs by storing fewer than bits per channel Having too few bits available can lead to banding Let us say you calculate a color channel at bits where values...

Ngày tải lên: 03/07/2014, 11:20

... property can then be evaluated at any time t by evaluating f (K, t); we can also say that we sample the animated value at different times t Using different functions f, we can vary the characteristics ... three imaginary components relate to an axis of rotation and the last, real, component relates to a rotation angle Each and every quaternion that we are interested in will always rest on a four-dimensional ... animation is much more space-efficient than storing the data for each frame A related benefit is that the keyframe rate need not be tied to the display rate; once you have your keyframe sequence, you...

Ngày tải lên: 03/07/2014, 11:20

... animated object hierarchies and fancy materials out of 3ds Max or Maya and into your real-time application can be a big challenge The task is not made any easier if your runtime API cannot handle ... 4.7: Left: A skeletally animated, or skinned, character Each arrow ends in a joint, and each joint has a bone transformation, usually involving at least translation and rotation Right: A close-up ... optimizations, and it also requires additional memory bandwidth to transfer the data between application and graphics memory Therefore, there is almost always some performance reduction associated...

Ngày tải lên: 03/07/2014, 11:20

... still has to deal with a broad and diverse range of devices The performance characteristics, available memory, potential display configurations, programming tool chains, Java stack implementations, ... concatenating the node transformations along the way into a × matrix Note that many of these paths will typically overlap, particularly the closer we get to the camera node, so it makes a lot ... a callback should ideally have access to global data about light sources, bounding boxes, modelview matrices, nearby objects, and so on, but to arrange the internal operations and data structures...

Ngày tải lên: 03/07/2014, 11:20