球探足球|比分

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        Jason Doucette / Xona Games
         
        hometown – Yarmouth, NS, Canada
        residence – Seattle, WA, USA
        university – Acadia University
        college – COGS
        contact – (other methods)
            social networks
            tech – Project/Games · Graphics Tech · Artificial Intelligence · World Records/Number Theory
        personal – Home · Resume · Transcripts · Contact
        twin – Matthew Doucette of Xona Games
        old – Petzold's Programming Windows 5th ed Errata · Domain Hacks · Wallpapers



        Computer Graphics

        Back to Main Resume Page

        The following graphic samples are all software, programmed in MS-DOS. They all run real-time, even on a 486/66Mhz class machine (on which most of these were programmed). Each real time computer graphic engine is similar to those required for interactive video games and simulation software. None of the following effects are created via 3D graphic accelerators. Each of these effects is 100% responsible for the display of every individual pixel, manually computed by CPU directly from my software. Also, none of the programs use a graphics API (such as DirectX or OpenGL) which would perform most of the calculations for you. Any 3D program uses the basic 3D formula for converting a 3D point into a 2D screen position which I developed myself in grade VIII without the aid of textbooks or any other graphic / art sources. All the effects included tweaked VGA modes, hi-color modes, and other video card tricks are 100% software.

        All code is original and self-taught. Pictures are shrunk down from the actual screen shots. All effects, including hi-color effects, run under standard VGA. Some run under any non-standard Mode-X resolution (up to 360x480, 376x564, and 640x400).

        It should be noted that standard VGA does not have a hi-color mode. In its standard mode 13h, the screen has a resolution of 320x200. The pixels have an anisotropic ratio of 6:5. It has a maximum of 256 colors on the screen at any given time. It only has one frame buffer, which implies a 64,000-byte memory copy from a virtual screen buffer for each frame.

        In the non-standard Mode-X modes, there are several screen resolutions available. The initial problem is to tweak the registers in an unpublished, non-standard way to achieve these modes. They also have a 256 color limit. Their pixel aspect ratios vary with the modes (320x240 has perfectly square pixels, where as most of the other resolutions do not). If the screen buffer is sufficiently small (131,072 bytes or less), Mode-X offers more than a single screen buffer. However, unlike mode 13h, is it non-linear. It exists in four planes, in which each plane accesses one fourth of the screen. Each plane skips three intermediate screen pixels, making it very difficult for drawing procedures - even for a virtual screen buffer copy, which is necessary for modes with only one screen buffer.

        The knowledge and wisdom gained from my extensive experience in programming these software engines can be used for the implementation of such engines in the current release of 2D systems, such as PDA devices and the Game Boy Advance (GBA). If you have an interest in any of my technologies, please contact me at .

        WIRE MESH
        Wire Mesh 3D Glasses
        Wire Frame Space Shuttle Wire Frame 3D Glasses
        Download 3dglasses.zip (56KB)
        Anti-Aliased Lines
        Anti-Aliased Lines
        Download antialiasing.zip (20KB)


        POLYGON
        Polygon Tunnel
        Polygon Tunnel
        Download polygontunnel.zip (14KB)
        Light-Source w/ Shadow 3D Parameterization
        Light-Source Polygon Shadow
        Download lightsourceshadow.zip (17KB)
        3D Parameterization
        Download 3dparameterization.zip (297KB)


        TEXTURE MAPPING
        Texture Mapping Texture Mapping
        w/ Color Quantized Fade
        Texture Mapping
        Download texturemapping.zip (23KB)
        Texture Mapping w/ Color Quantized Fade
        Download texturemappingfade.zip (79KB)
        Texture Mapped Tunnel Rotation, Scaling, Mip-Mapping
        Texture Mapped Tunnel
        Download texturedtunnel.zip (24KB)
        Rotation/Scaling/Mip-mapping
        Download rotation.zip (396KB)


        GOURAUD, PERSPECTIVE, PHONG
        Gouraud Shading
        Gouraud Shading Gouraud Shading
        Download gouraudshading.zip (62KB)
        Environment Mapping Phong Shading
        Environment Mapping

        Environment Mapping

        Environment Mapping
        Download environmentmapping.zip (127KB)
        Phong Shading

        Phong Shading

        Phong Shading
        Download phongshading.zip (46KB)
        Gouraud Texture Perspective Texture
        Gouraud Texture Perspective Texture
        Download perspectivetexture.zip (44KB)


        BLUR MOTION
        Polygon Blur Gouraud Texture Blur
        Polygon Blur Gouraud Texture Blur
        Download gouraudtextureblur.zip (254KB)


        PHYSICS SIMULATIONS
        Spring Theory Gravity Simulation
        Spring Theory
        Spring Theory
        (on my Projects/Games page)
        Gravity Simulation
        Gravity Simulation
        (on my Projects/Games page)
        Anit-Gravity Arkanoid Physics
        Anti-Gravity Simulation
        Anti-Gravity Simulation
        (on my Projects/Games page)
        Arkanoid Physics Engine
        Arkanoid '97
        (on my Projects/Games page)
        Road Simulation
        Road Simulation
        Road Engine for Full Tilt
        (on my Projects/Games page)


        MISCELLANEOUS
        Voxel Terrain Technology (Height Mapped Engine)
        Photo-Realistic Height Mapped Terrain
        Voxel Terrain Engine
        (on my Projects/Games page)
        Bump Mapped Shading Vector Balls / Compiled Sprites
        Bump Mapped Shading
        Download bumpshading3.zip (19KB)
        Vector Balls
        Download vectorballs.zip (155KB)
        Maze Generator / Solver
        Maze Generation     Maze Solver
        Download mazegeneration.zip (35KB)


        DEMO GRAPHIC EFFECTS
        Spinning Copper Bars Bitmap Plasma Distortion
        Spinning Copper Bars
        Download copperbars.zip (18KB)
        Wavy Bitmap
        Download bitmapdistortion.zip (73KB)
        Color Wheel / Fake 12-Bit Color Wave Interference




        Download 12bitcolor.zip (15KB)
        Wave Interference
        Download waveinterference.zip (36KB)
        Mandelbrot Set 3D Sierpinski Triangle /
        Sierpinski Gasket
        Mandelbrot Set
        Mandelbrot Set Images
        (on my Wallpapers page)
        3D Sierpinski Triangle / Sierpinski Gasket
        Liquid Motion Fire
        Liquid Motion
        Download liquidmotion.zip (21KB)
        Fire
        Download fire.zip (28KB)

        Some of these graphic engines have been used in projects I have on display in my Projects/Games page.

        My brother, Matthew Doucette, also has a page which showcases his talents in Real Time DOS Graphics. He also has a page that displays his Real Time 3Dfx Graphics.

         
        86,414 visitors since May 13th, 1999
        2,041,750 total page views since May 13th, 1999
        Jason Allen Doucette / Xona Games
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