Tsev > Xov xwm > Ntsiab lus

Bridgetek BT81X (815/6) Advanced EVE Graphics Cav

May 09, 2019

4.3.1 Qhia tawm

Lub tshuab graphics executes cov lus teev ib zaug rau txhua kab rov tav. Nws executes cov txheej thaum ub
cov khoom nyob rau hauv daim ntawv teev zaub thiab constructs cov duab kab tsis. Cov kab lus tav toj pixel hauv kab
tsis tuaj yeem kho yog tias qhov khoom ntawd pom ntawm kab rov tav.
Lub ntsiab ntawm lub tshuab kos duab yog:

 Cov txheej txheem txheej thaum ub los ntawm tus processor processor yog: cov kab, cov ntsiab lus, voos, cov duab bitmaps

(cov txheej txheem ntawm cov ntaub ntawv), cov ntawv sau, cov duab teeb, cov ntug hauv qab, thiab cov kab hauv kab, thiab lwm yam.

 Kev ua haujlwm xws li kev xeem stencil, alpha blending thiab masking yog qhov tseem ceeb rau kev tsim kom muaj kev nplua nuj

cov teebmeem xws li cov duab ntxoov ntxoo, kev hloov, qhia, ploj thiab ntaub so.

 Tiv thaiv cov khoom siv txheej thaum ub (tshwj tsis yog cov bitmaps) muab cov nyhuv rau tus neeg saib.

 Kev hloov cov kev hloov bitmap pab kev ua haujlwm xws li txhais, nplai thiab tig.

 Cov duab pixels muaj teeb meem nrog 1/16th pixel precision.

 Plaub theem ntawm daim duab qhia

 Ua kom tsis tuaj yeem ntes tau


Lub cav cav kuj txhawb kev tsim kho qhov tsim thiab ua haujlwm xws li ASTC decode,
jpeg decode, screen saver, calibration thiab lwm yam. Lub cav cav txhais lus commands ntawm MPU party
ntawm 4 Kbyte FIFO nyob rau hauv BT815 / 6 nco ntawm RAM_CMD. MPU / MCU sau cov lus txib rau hauv FIFO,
thiab cov duab kos cav thiab ua raws cov lus txib. MPU / MCU tshiab sau npe
REG_CMD_WRITE qhia tias muaj cov lus txib tshiab hauv lub FIFO, thiab cov kev ua yeeb yam tshiab
REG_CMD_READ tom qab cov commands tau raug tua.
Cov nta tseem ceeb txaus siab yog:

 Teeb duab ntawm widgets xws li cov nyees khawm, moos, cov yawm sij, cov lus qhia, cov ntawv nyeem, cov kev kawm nce qib, cov kab lus,

toggle keyboards, dials, gradients, thiab lwm yam.

 JPEG thiab tsab ntawv tsa suab-jPEG txiav txim

 Hloov ua haujlwm (zlib inflate) txaus siab

 Tuaj cuam tshuam (tsim kom muaj kev cuam tshuam rau tus tswv tsev khiav haujlwm tom qab tus zauv cim tseg

milliseconds)

6

 Ua haujlwm hauv animated functionalities xws li tso duab, calibration, spinner, screen saver thiab

kos duab

 Kev ntxig xwm ntxig ntxig los mus ntes cov duab tso tawm tam sim no

Rau tag nrho daim ntawv teev cov qauv cav tso qauv commands thiab widgets xa mus rau
BT81X_Series_Programming_Guide , Tshooj 4.