mirror of
https://github.com/kevinbentley/Descent3.git
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218 lines
5.9 KiB
C
218 lines
5.9 KiB
C
/*
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* $Logfile: /DescentIII/Main/lib/texture.h $
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* $Revision: 9 $
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* $Date: 5/05/98 3:02p $
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* $Author: Jason $
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*
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* Header for texture mapper library
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*
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* $Log: /DescentIII/Main/lib/texture.h $
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*
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* 9 5/05/98 3:02p Jason
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* attempting to add different screen resolutions
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*
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* 8 1/14/98 5:49p Jeff
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* tex_LFBLock stuff added (samir.)
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*
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* 7 12/22/97 7:32p Samir
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* Took out include to gr.h
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*
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* 6 12/19/97 5:22p Samir
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* Added more drawing primatives for software.
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*
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* 5 12/19/97 12:20p Jason
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* changes for better 2d/3d system integration
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*
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* 4 10/15/97 5:20p Jason
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* did a HUGE overhaul of the bitmap system
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*
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* 3 9/16/97 4:09p Jason
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* implemented software zbuffer
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*
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* 2 9/09/97 12:34p Jason
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* made software transparency work correctly with new alpha type
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*
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* 2 6/24/97 7:45p Matt
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* Removed include of manage.h
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*
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* 1 6/23/97 9:25p Samir
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* added because source safe sucks
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*
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* 40 5/22/97 11:59a Jason
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* add a ScaleBitmap function to the abstracted render library
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*
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* 39 5/19/97 5:10p Jason
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* changes for our new abstracted renderer code
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*
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* 38 5/12/97 11:41a Jason
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* made game work (default) to 16bit no mip maps mode
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* Saves us alot of memory
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*
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* 37 5/01/97 4:37p Jason
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* added alpha blending (slow)
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*
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* 36 4/30/97 3:15p Jason
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* changes to support both 8bit and 16bit rendering in software
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*
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* 35 4/11/97 4:20p Jason
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* implemented a general fog system
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*
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* 34 3/25/97 2:33p Jason
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* added Software_renderer byte
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*
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* 33 3/20/97 11:54a Jason
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* changes to support special triangle drawer
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*
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* 32 3/14/97 4:33p Jason
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* added tex_SetMipState function
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*
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* 31 3/13/97 6:19p Jason
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* implemented tex_GetRenderType function
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*
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* 30 2/26/97 6:00p Matt
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* Renamed 3d lib structs for D3 naming convention
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*
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* $NoKeywords: $
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*/
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#ifndef TEXTURE_H
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#define TEXTURE_H
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#include "3d.h"
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#include "pstypes.h"
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#include "renderer.h"
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#define MAX_TEXTURE_SHADES 32
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typedef struct
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{
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int screenx,screeny;
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float flscreenx,flscreeny;
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fix ucoord,vcoord;
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float flucoord,flvcoord,flzcoord;
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fix monolight;
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fix redlight,greenlight,bluelight;
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} texs_texpoint;
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// For the following enum table: LIN=Linear, PER=Perspective, NON=No Transparency, LIT = Shaded,
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// COLORED=Colored lighting, TRANS=Transparency ALPHA=Alpha renderer
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#define MAX_RENDER_TYPES 15
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extern void (*Texture_functions[])(g3Point *,int);
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// Our shade tables
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extern ubyte TexShadeTable8[MAX_TEXTURE_SHADES][256];
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extern ulong TexShadeTable16[MAX_TEXTURE_SHADES][256];
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extern ubyte TexRevShadeTable8[MAX_TEXTURE_SHADES][256];
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extern ulong TexRevShadeTable16[MAX_TEXTURE_SHADES][256];
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int tex_Init();
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// These are the different routines for drawing the various types of effects on a texture
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void tex_PerUnlitTexturedQuad (g3Point *,int);
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void tex_PerLitTexturedQuad (g3Point *,int);
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void tex_UnlitTexturedQuad (g3Point *,int);
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void tex_LitTexturedQuad (g3Point *,int);
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void tex_ColoredTexturedQuad (g3Point *,int);
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void tex_PerColoredTexturedQuad (g3Point *,int);
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void tex_UnlitTransQuad (g3Point *,int);
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void tex_LitTransQuad(g3Point *,int);
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void tex_PerUnlitTransQuad (g3Point *,int);
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void tex_PerLitTransQuad(g3Point *,int);
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void tex_LinFlatShade (g3Point *,int);
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void tex_PerFlatShade (g3Point *,int);
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void tex_LitTexturedTriangle (g3Point *,int);
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void tex_FlatPolyTriangle (g3Point *,int);
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void tex_SetFlatColor (ddgr_color color);
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void tex_UnlitTexturedQuad16 (g3Point *p,int nv);
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void tex_LitTexturedQuad16 (g3Point *p,int nv);
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void tex_PerUnlitTexturedQuad16 (g3Point *p,int nv);
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void tex_PerLitTexturedQuad16 (g3Point *p,int nv);
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void tex_LitTexturedTriangle16 (g3Point *p,int nv);
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void tex_LinFlatShade16 (g3Point *p,int nv);
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void tex_PerFlatShade16 (g3Point *p,int nv);
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void tex_AlphaTexturedQuad(g3Point *p,int nv);
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// These functions get the extremes of a polygon
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void tex_GetVertexOrdering (texs_texpoint *t, int nv, int *vlt, int *vlb, int *vrt, int *vrb,int *bottom_y_ind);
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int tex_PrevIndex(int val,int modulus);
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int tex_NextIndex(int val,int modulus);
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// Builds the 1/n table
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void tex_BuildRecipTable();
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// Draws a solid color polygon. "color" is a color in 5-6-5 format.
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void tex_DrawFlatPolygon (g3Point **pv,int nv);
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// Given a handle to a texture and nv point vertices, does a fan algorithm to draw them all
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// Uses the function set by tex_SetRenderType
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void tex_DrawPointList(int handle,g3Point **p,int nv);
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// Tells the software renderer whether or not to use mipping
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void tex_SetMipState (int);
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// Sets the fog state to TRUE or FALSE
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void tex_SetFogState (int on);
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// Sets the a lighting state for the software renderer
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void tex_SetLighting (light_state);
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// Sets a color model (see renderer.h for valid models)
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void tex_SetColorModel (color_model);
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// Sets a texturing type (see renderer.h)
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void tex_SetTextureType (texture_type);
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// Sets the near and far plane of fog
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void tex_SetFogBorders (float fog_near,float fog_far);
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// Sets the alpha type
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void tex_SetAlphaType (sbyte);
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// ZBuffer variables
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void tex_SetZBufferState (int state);
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void tex_ClearZBuffer ();
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void tex_StartFrame(int x1,int y1,int x2,int y2);
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void tex_EndFrame();
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// Sets the software renderer to render to a particular place
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void tex_SetSoftwareParameters (float,int,int,int,ubyte *);
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// Fills in projection variables
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void tex_GetProjectionParameters (int *width,int *height);
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// Returns the aspect ratio of the physical screen
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float tex_GetAspectRatio ();
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// software line renderer.
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void tex_DrawLine(int x1, int y1, int x2, int y2);
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// fill rect supported.
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void tex_FillRect(ddgr_color color, int x1, int y1, int x2, int y2);
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// set pixel
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void tex_SetPixel(ddgr_color color, int x, int y);
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// get pixel
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ddgr_color tex_GetPixel(int x, int y);
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// fillcircle
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void tex_FillCircle(ddgr_color col, int x, int y, int r);
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// draw circle
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void tex_DrawCircle(int x, int y, int r);
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// lfb stuff
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void tex_GetLFBLock(renderer_lfb *lfb);
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void tex_ReleaseLFBLock(renderer_lfb *lfb);
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void tex_GetRenderState (rendering_state *rs);
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#endif
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