R_DrawPSprite

R_DrawPlanes At the end of each frame.

R_DrawPlayerSprites

R_DrawSprite

R_GenerateComposite Using the texture definition, the composite texture is created from the patches, and each column is cached.

R_GenerateLookup

R_InitBuffer Creats lookup tables that avoid multiplies and other hazzles for getting the framebuffer address of a pixel to draw.

R_InitColormaps

R_InitData Locates all the lumps that will be used by all views Must be called after W_Init.

R_InitFlats

R_InitPlanes Only at game startup.

R_InitPointToAngle

R_InitSkyMap Called whenever the view size changes.

R_InitSpriteDefs Pass a null terminated list of sprite names (4 chars exactly) to be used. Builds the sprite rotation matrixes to account for horizont

R_InitSpriteLumps Finds the width and hoffset of all sprites in the wad, so the sprite does not need to be cached completely just for having the heade

R_InitSprites Called at program start.

R_InitTables

R_InitTextureMapping

R_InitTextures Initializes the texture list with the textures from the world map.

R_InitTranslationTables Creates the translation tables to map the green color ramp to gray, brown, red. Assumes a given structure of the PLAYPAL. Coul

R_MakeSpans

R_ProjectSprite Generates a vissprite for a thing if it might be visible.

RenderBSPNode Renders all subsectors below a given node, traversing subtree recursively. Just call with BSP root.

R_RenderView

R_SetupFrame

This is a not-very-pretty routine which handles the face states and their timing. the precedence of expressions is: dead > evil grin > turned head > s

A fairly efficient way to draw a number based on differences from the old number. Note: worth the trouble?

Initializes sound stuff, including volume Sets channels, SFX and music volume, allocates channel buffer, sets S_sfx lookup.

Stop and resume music, during game PAUSE.

Per level startup code. Kills playing sounds at start of level, determines music if any, changes music.

Updates music & sounds

S_getChannel : If none available, return -1. Otherwise channel #.

V_DrawBlock Draw a linear block of pixels into the view buffer.

V_DrawPatchFlipped Masks a column based masked pic to the screen. Flips horizontally, e.g. to mirror face.

V_Init

Updates stuff each tick

W_Reload Flushes any of the reloadable lumps in memory and reloads the directory.

WritePCXfile

Z_CheckHeap

Z_FileDumpHeap

Z_Init