mirror of
https://github.com/FWGS/xash3d-fwgs.git
synced 2026-08-07 04:40:43 +08:00
579 lines
11 KiB
C
579 lines
11 KiB
C
/*
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gu_triapi.c - TriAPI draw methods
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Copyright (C) 2011 Uncle Mike
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Copyright (C) 2019 a1batross
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Copyright (C) 2021 Sergey Galushko
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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*/
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#include "gu_local.h"
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#include "const.h"
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static struct
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{
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int renderMode; // override kRenderMode from TriAPI
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vec4_t triRGBA;
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} ds;
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static struct
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{
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byte *start;
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byte *end;
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int count;
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int prim;
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uint flags;
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float lastTexCord[2];
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uint lastColor;
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}triContext = { 0 };
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/*
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===============================================================
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TRIAPI IMPLEMENTATION
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===============================================================
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*/
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/*
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=============
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TriRenderMode
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set rendermode
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=============
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*/
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void TriRenderMode( int mode )
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{
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ds.renderMode = mode;
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switch( mode )
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{
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case kRenderNormal:
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sceGuTexFunc( GU_TFX_MODULATE, GU_TCC_RGBA );
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sceGuDisable( GU_BLEND );
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sceGuDepthMask( GU_FALSE );
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break;
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case kRenderTransAlpha:
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sceGuEnable( GU_BLEND );
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sceGuTexFunc( GU_TFX_MODULATE, GU_TCC_RGBA );
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sceGuBlendFunc( GU_ADD, GU_SRC_ALPHA, GU_ONE_MINUS_SRC_ALPHA, 0, 0 );
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sceGuDepthMask( GU_TRUE );
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break;
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case kRenderTransColor:
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case kRenderTransTexture:
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sceGuEnable( GU_BLEND );
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sceGuBlendFunc( GU_ADD, GU_SRC_ALPHA, GU_ONE_MINUS_SRC_ALPHA, 0, 0 );
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break;
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case kRenderGlow:
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case kRenderTransAdd:
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sceGuBlendFunc( GU_ADD, GU_SRC_ALPHA, GU_FIX, 0, GUBLEND1 );
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sceGuEnable( GU_BLEND );
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sceGuDepthMask( GU_TRUE );
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break;
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}
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}
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/*
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=============
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TriBegin
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begin triangle sequence
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=============
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*/
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void TriBegin( int mode )
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{
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switch( mode )
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{
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case TRI_POINTS:
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triContext.prim = GU_POINTS;
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break;
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case TRI_TRIANGLES:
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triContext.prim = GU_TRIANGLES;
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break;
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case TRI_TRIANGLE_FAN:
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triContext.prim = GU_TRIANGLE_FAN;
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break;
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case TRI_QUADS:
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triContext.prim = GU_TRIANGLE_FAN;
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break;
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case TRI_LINES:
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triContext.prim = GU_LINES;
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break;
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case TRI_TRIANGLE_STRIP:
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triContext.prim = GU_TRIANGLE_STRIP;
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break;
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case TRI_QUAD_STRIP:
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triContext.prim = GU_TRIANGLE_STRIP;
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break;
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case TRI_POLYGON:
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default:
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triContext.prim = GU_TRIANGLE_FAN;
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break;
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}
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triContext.start = extGuBeginPacket( NULL );
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triContext.end = triContext.start;
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triContext.count = 0;
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triContext.flags = 0;
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}
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/*
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=============
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TriEnd
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draw triangle sequence
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=============
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*/
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void TriEnd( void )
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{
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if( !triContext.start || triContext.count == 0 )
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return;
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extGuEndPacket(( void* )triContext.end );
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sceGuDrawArray( triContext.prim, triContext.flags, triContext.count, 0, triContext.start );
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triContext.start = NULL;
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triContext.end = NULL;
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triContext.count = 0;
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}
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/*
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=============
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_TriColor4f
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=============
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*/
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static void _TriColor4f( float r, float g, float b, float a )
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{
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if( triContext.start )
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{
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if( triContext.count > 0 && !( triContext.flags & GU_COLOR_8888 ))
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return;
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triContext.flags |= GU_COLOR_8888;
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triContext.lastColor = GUCOLOR4F( r, g, b, a );
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}
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else sceGuColor( GUCOLOR4F( r, g, b, a ));
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}
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/*
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=============
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_TriColor4ub
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=============
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*/
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static void _TriColor4ub( byte r, byte g, byte b, byte a )
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{
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if( triContext.start )
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{
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if( triContext.count > 0 && !( triContext.flags & GU_COLOR_8888 ))
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return;
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triContext.flags |= GU_COLOR_8888;
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triContext.lastColor = GUCOLOR4UB( r, g, b, a );
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}
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else sceGuColor( GUCOLOR4UB( r, g, b, a ));
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}
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/*
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=============
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TriColor4ub
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=============
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*/
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void TriColor4ub( byte r, byte g, byte b, byte a )
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{
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ds.triRGBA[0] = r * (1.0f / 255.0f);
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ds.triRGBA[1] = g * (1.0f / 255.0f);
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ds.triRGBA[2] = b * (1.0f / 255.0f);
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ds.triRGBA[3] = a * (1.0f / 255.0f);
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_TriColor4ub( r, g, b, 255 );
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}
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/*
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=================
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TriColor4f
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=================
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*/
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void TriColor4f( float r, float g, float b, float a )
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{
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if( ds.renderMode == kRenderTransAlpha )
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_TriColor4ub( r * 255.9f, g * 255.9f, b * 255.9f, a * 255.0f );
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else _TriColor4f( r * a, g * a, b * a, 1.0 );
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ds.triRGBA[0] = r;
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ds.triRGBA[1] = g;
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ds.triRGBA[2] = b;
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ds.triRGBA[3] = a;
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}
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/*
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=============
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TriTexCoord2f
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=============
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*/
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void TriTexCoord2f( float u, float v )
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{
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if( !triContext.start )
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return;
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if( triContext.count > 0 && !( triContext.flags & GU_TEXTURE_32BITF ))
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return;
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triContext.flags |= GU_TEXTURE_32BITF;
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triContext.lastTexCord[0] = u;
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triContext.lastTexCord[1] = v;
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}
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/*
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=============
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TriVertex3fv
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=============
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*/
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void TriVertex3fv( const float *v )
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{
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if( !triContext.start )
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return;
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if( triContext.flags & GU_TEXTURE_32BITF )
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{
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*( float* )triContext.end = triContext.lastTexCord[0];
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triContext.end += sizeof( float );
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*( float* )triContext.end = triContext.lastTexCord[1];
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triContext.end += sizeof( float );
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}
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if( triContext.flags & GU_COLOR_8888 )
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{
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*( uint* )triContext.end = triContext.lastColor;
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triContext.end += sizeof( uint );
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}
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triContext.flags |= GU_VERTEX_32BITF;
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*( float* )triContext.end = v[0];
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triContext.end += sizeof( float );
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*( float* )triContext.end = v[1];
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triContext.end += sizeof( float );
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*( float* )triContext.end = v[2];
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triContext.end += sizeof( float );
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triContext.count++;
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}
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/*
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=============
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TriVertex3f
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=============
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*/
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void TriVertex3f( float x, float y, float z )
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{
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if( !triContext.start )
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return;
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if( triContext.flags & GU_TEXTURE_32BITF )
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{
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*( float* )triContext.end = triContext.lastTexCord[0];
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triContext.end += sizeof( float );
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*( float* )triContext.end = triContext.lastTexCord[1];
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triContext.end += sizeof( float );
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}
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if( triContext.flags & GU_COLOR_8888 )
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{
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*( uint* )triContext.end = triContext.lastColor;
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triContext.end += sizeof( uint );
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}
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triContext.flags |= GU_VERTEX_32BITF;
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*( float* )triContext.end = x;
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triContext.end += sizeof( float );
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*( float* )triContext.end = y;
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triContext.end += sizeof( float );
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*( float* )triContext.end = z;
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triContext.end += sizeof( float );
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triContext.count++;
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}
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/*
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=============
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TriWorldToScreen
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convert world coordinates (x,y,z) into screen (x, y)
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=============
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*/
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int TriWorldToScreen( const float *world, float *screen )
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{
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int retval;
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retval = R_WorldToScreen( world, screen );
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screen[0] = 0.5f * screen[0] * (float)RI.viewport[2];
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screen[1] = -0.5f * screen[1] * (float)RI.viewport[3];
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screen[0] += 0.5f * (float)RI.viewport[2];
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screen[1] += 0.5f * (float)RI.viewport[3];
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return retval;
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}
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/*
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=============
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TriSpriteTexture
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bind current texture
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=============
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*/
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int TriSpriteTexture( model_t *pSpriteModel, int frame )
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{
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int gl_texturenum;
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if(( gl_texturenum = R_GetSpriteTexture( pSpriteModel, frame )) == 0 )
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return 0;
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if( gl_texturenum <= 0 || gl_texturenum > MAX_TEXTURES )
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gl_texturenum = tr.defaultTexture;
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GL_Bind( XASH_TEXTURE0, gl_texturenum );
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return 1;
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}
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/*
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=============
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TriFog
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enables global fog on the level
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=============
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*/
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void TriFog( float flFogColor[3], float flStart, float flEnd, int bOn )
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{
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// overrided by internal fog
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if( RI.fogEnabled ) return;
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RI.fogCustom = bOn;
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// check for invalid parms
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if( flEnd <= flStart )
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{
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glState.isFogEnabled = RI.fogCustom = false;
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#if 1
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sceGuDisable( GU_FOG );
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#else
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pglDisable( GL_FOG );
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#endif
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return;
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}
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#if 1
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if( RI.fogCustom )
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sceGuEnable( GU_FOG );
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else sceGuDisable( GU_FOG );
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#else
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if( RI.fogCustom )
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pglEnable( GL_FOG );
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else pglDisable( GL_FOG );
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#endif
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// copy fog params
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RI.fogColor[0] = flFogColor[0] / 255.0f;
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RI.fogColor[1] = flFogColor[1] / 255.0f;
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RI.fogColor[2] = flFogColor[2] / 255.0f;
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RI.fogStart = flStart;
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RI.fogColor[3] = 1.0f;
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RI.fogDensity = 0.0f;
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RI.fogSkybox = true;
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RI.fogEnd = flEnd;
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#if 1
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printf("TRI FOG: s %f e %f c %f %f %f %f \n", RI.fogStart, RI.fogEnd,
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RI.fogColor[0], RI.fogColor[1], RI.fogColor[2], RI.fogColor[3] );
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//glState.fogDensity = RI.fogDensity
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glState.fogColor = GUCOLOR4F( RI.fogColor[0], RI.fogColor[1], RI.fogColor[2], glState.fogDensity );
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glState.fogStart = RI.fogStart;
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glState.fogEnd = RI.fogEnd;
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sceGuFog( glState.fogStart, glState.fogEnd, glState.fogColor );
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#else
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pglFogi( GL_FOG_MODE, GL_LINEAR );
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pglFogfv( GL_FOG_COLOR, RI.fogColor );
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pglFogf( GL_FOG_START, RI.fogStart );
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pglFogf( GL_FOG_END, RI.fogEnd );
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pglHint( GL_FOG_HINT, GL_NICEST );
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#endif
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}
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/*
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=============
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TriGetMatrix
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very strange export
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=============
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*/
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void TriGetMatrix( const int pname, float *matrix )
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{
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#if 1
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printf("%s:%i:%s - Not implemented\n", __FILE__, __LINE__, __FUNCTION__ );
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#else
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pglGetFloatv( pname, matrix );
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#endif
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}
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/*
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=============
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TriForParams
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=============
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*/
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void TriFogParams( float flDensity, int iFogSkybox )
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{
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RI.fogDensity = flDensity;
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RI.fogSkybox = iFogSkybox;
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}
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/*
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=============
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TriCullFace
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=============
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*/
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void TriCullFace( TRICULLSTYLE mode )
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{
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int glMode;
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switch( mode )
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{
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case TRI_FRONT:
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glMode = GL_FRONT;
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break;
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default:
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glMode = GL_NONE;
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break;
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}
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GL_Cull( glMode );
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}
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/*
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=============
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TriBrightness
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=============
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*/
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void TriBrightness( float brightness )
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{
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float r, g, b;
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r = ds.triRGBA[0] * ds.triRGBA[3] * brightness;
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g = ds.triRGBA[1] * ds.triRGBA[3] * brightness;
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b = ds.triRGBA[2] * ds.triRGBA[3] * brightness;
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_TriColor4f( r, g, b, 1.0f );
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}
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unsigned int getTriBrightness( float brightness )
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{
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vec3_t color;
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if( brightness < 0.0f ) return 0;
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color[0] = ds.triRGBA[0] * ds.triRGBA[3] * brightness;
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color[1] = ds.triRGBA[1] * ds.triRGBA[3] * brightness;
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color[2] = ds.triRGBA[2] * ds.triRGBA[3] * brightness;
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//VectorNormalizeFast( color );
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return GUCOLOR3FV( color );
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}
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/*
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=============
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TriBoxInPVS
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check box in pvs (absmin, absmax)
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=============
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*/
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int TriBoxInPVS( float *mins, float *maxs )
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{
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return gEngfuncs.Mod_BoxVisible( mins, maxs, Mod_GetCurrentVis( ));
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}
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/*
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=============
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TriLightAtPoint
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NOTE: dlights are ignored
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=============
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*/
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void TriLightAtPoint( float *pos, float *value )
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{
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colorVec vLightColor;
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if( !pos || !value ) return;
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vLightColor = R_LightPoint( pos );
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value[0] = vLightColor.r;
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value[1] = vLightColor.g;
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value[2] = vLightColor.b;
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}
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/*
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=============
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TriColor4fRendermode
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Heavy legacy of Quake...
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=============
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*/
|
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void TriColor4fRendermode( float r, float g, float b, float a, int rendermode )
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{
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if( ds.renderMode == kRenderTransAlpha )
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{
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ds.triRGBA[3] = a / 255.0f;
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_TriColor4f( r, g, b, a );
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}
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else _TriColor4f( r * a, g * a, b * a, 1.0f );
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}
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|
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/*
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=============
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getTriAPI
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export
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=============
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*/
|
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int getTriAPI( int version, triangleapi_t *api )
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{
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api->version = TRI_API_VERSION;
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|
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if( version != TRI_API_VERSION )
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return 0;
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api->RenderMode = TriRenderMode;
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api->Begin = TriBegin;
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api->End = TriEnd;
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api->Color4f = TriColor4f;
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api->Color4ub = TriColor4ub;
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api->TexCoord2f = TriTexCoord2f;
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api->Vertex3fv = TriVertex3fv;
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api->Vertex3f = TriVertex3f;
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api->Brightness = TriBrightness;
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api->CullFace = TriCullFace;
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api->SpriteTexture = TriSpriteTexture;
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api->WorldToScreen = R_WorldToScreen;
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api->Fog = TriFog;
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api->ScreenToWorld = R_ScreenToWorld;
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api->GetMatrix = TriGetMatrix;
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api->BoxInPVS = TriBoxInPVS;
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api->LightAtPoint = TriLightAtPoint;
|
|
api->Color4fRendermode = TriColor4fRendermode;
|
|
api->FogParams = TriFogParams;
|
|
|
|
return 1;
|
|
}
|