mirror of
https://github.com/FWGS/xash3d-fwgs
synced 2024-11-11 05:19:01 +01:00
722 lines
16 KiB
C
722 lines
16 KiB
C
/*
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gl_backend.c - rendering backend
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Copyright (C) 2010 Uncle Mike
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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 "common.h"
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#include "client.h"
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#include "gl_local.h"
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#include "mathlib.h"
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char r_speeds_msg[MAX_SYSPATH];
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ref_speeds_t r_stats; // r_speeds counters
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/*
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===============
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R_SpeedsMessage
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===============
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*/
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qboolean R_SpeedsMessage( char *out, size_t size )
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{
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if( clgame.drawFuncs.R_SpeedsMessage != NULL )
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{
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if( clgame.drawFuncs.R_SpeedsMessage( out, size ))
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return true;
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// otherwise pass to default handler
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}
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if( r_speeds->value <= 0 ) return false;
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if( !out || !size ) return false;
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Q_strncpy( out, r_speeds_msg, size );
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return true;
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}
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/*
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==============
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GL_BackendStartFrame
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==============
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*/
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void GL_BackendStartFrame( void )
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{
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r_speeds_msg[0] = '\0';
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}
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/*
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==============
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GL_BackendEndFrame
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==============
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*/
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void GL_BackendEndFrame( void )
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{
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if( r_speeds->value <= 0 || !RI.drawWorld )
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return;
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switch( (int)r_speeds->value )
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{
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case 1:
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Q_snprintf( r_speeds_msg, sizeof( r_speeds_msg ), "%3i wpoly, %3i apoly\n%3i epoly, %3i spoly",
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r_stats.c_world_polys, r_stats.c_alias_polys, r_stats.c_studio_polys, r_stats.c_sprite_polys );
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break;
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case 2:
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Q_snprintf( r_speeds_msg, sizeof( r_speeds_msg ), "visible leafs:\n%3i leafs\ncurrent leaf %3i",
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r_stats.c_world_leafs, Mod_PointInLeaf( RI.pvsorigin, cl.worldmodel->nodes ) - cl.worldmodel->leafs );
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break;
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case 3:
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Q_snprintf( r_speeds_msg, sizeof( r_speeds_msg ), "%3i alias models drawn\n%3i studio models drawn\n%3i sprites drawn",
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r_stats.c_alias_models_drawn, r_stats.c_studio_models_drawn, r_stats.c_sprite_models_drawn );
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break;
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case 4:
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Q_snprintf( r_speeds_msg, sizeof( r_speeds_msg ), "%3i static entities\n%3i normal entities\n%3i server entities",
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r_numStatics, r_numEntities - r_numStatics, pfnNumberOfEntities( ));
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break;
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case 5:
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Q_snprintf( r_speeds_msg, sizeof( r_speeds_msg ), "%3i tempents\n%3i viewbeams\n%3i particles",
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r_stats.c_active_tents_count, r_stats.c_view_beams_count, r_stats.c_particle_count );
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break;
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}
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memset( &r_stats, 0, sizeof( r_stats ));
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}
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/*
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=================
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GL_LoadTexMatrix
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=================
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*/
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void GL_LoadTexMatrix( const matrix4x4 m )
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{
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pglMatrixMode( GL_TEXTURE );
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GL_LoadMatrix( m );
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glState.texIdentityMatrix[glState.activeTMU] = false;
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}
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/*
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=================
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GL_LoadTexMatrixExt
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=================
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*/
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void GL_LoadTexMatrixExt( const float *glmatrix )
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{
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Assert( glmatrix != NULL );
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pglMatrixMode( GL_TEXTURE );
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pglLoadMatrixf( glmatrix );
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glState.texIdentityMatrix[glState.activeTMU] = false;
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}
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/*
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=================
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GL_LoadMatrix
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=================
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*/
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void GL_LoadMatrix( const matrix4x4 source )
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{
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GLfloat dest[16];
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Matrix4x4_ToArrayFloatGL( source, dest );
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pglLoadMatrixf( dest );
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}
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/*
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=================
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GL_LoadIdentityTexMatrix
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=================
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*/
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void GL_LoadIdentityTexMatrix( void )
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{
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if( glState.texIdentityMatrix[glState.activeTMU] )
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return;
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pglMatrixMode( GL_TEXTURE );
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pglLoadIdentity();
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glState.texIdentityMatrix[glState.activeTMU] = true;
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}
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/*
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=================
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GL_SelectTexture
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=================
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*/
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void GL_SelectTexture( GLint tmu )
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{
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if( !GL_Support( GL_ARB_MULTITEXTURE ))
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return;
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// don't allow negative texture units
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if( tmu < 0 ) return;
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if( tmu >= GL_MaxTextureUnits( ))
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{
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MsgDev( D_ERROR, "GL_SelectTexture: bad tmu state %i\n", tmu );
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return;
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}
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if( glState.activeTMU == tmu )
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return;
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glState.activeTMU = tmu;
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if( pglActiveTextureARB )
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{
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pglActiveTextureARB( tmu + GL_TEXTURE0_ARB );
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if( tmu < glConfig.max_texture_coords )
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pglClientActiveTextureARB( tmu + GL_TEXTURE0_ARB );
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}
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}
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/*
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==============
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GL_DisableAllTexGens
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==============
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*/
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void GL_DisableAllTexGens( void )
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{
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GL_TexGen( GL_S, 0 );
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GL_TexGen( GL_T, 0 );
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GL_TexGen( GL_R, 0 );
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GL_TexGen( GL_Q, 0 );
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}
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/*
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==============
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GL_CleanUpTextureUnits
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==============
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*/
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void GL_CleanUpTextureUnits( int last )
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{
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int i;
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for( i = glState.activeTMU; i > (last - 1); i-- )
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{
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// disable upper units
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if( glState.currentTextureTargets[i] != GL_NONE )
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{
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pglDisable( glState.currentTextureTargets[i] );
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glState.currentTextureTargets[i] = GL_NONE;
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glState.currentTextures[i] = -1; // unbind texture
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}
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GL_SetTexCoordArrayMode( GL_NONE );
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GL_LoadIdentityTexMatrix();
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GL_DisableAllTexGens();
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GL_SelectTexture( i - 1 );
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}
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}
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/*
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==============
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GL_CleanupAllTextureUnits
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==============
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*/
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void GL_CleanupAllTextureUnits( void )
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{
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// force to cleanup all the units
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GL_SelectTexture( GL_MaxTextureUnits() - 1 );
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GL_CleanUpTextureUnits( 0 );
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}
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/*
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=================
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GL_MultiTexCoord2f
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=================
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*/
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void GL_MultiTexCoord2f( GLenum texture, GLfloat s, GLfloat t )
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{
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if( !GL_Support( GL_ARB_MULTITEXTURE ))
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return;
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if( pglMultiTexCoord2f != NULL )
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pglMultiTexCoord2f( texture + GL_TEXTURE0_ARB, s, t );
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}
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/*
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=================
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GL_TextureTarget
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=================
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*/
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void GL_TextureTarget( uint target )
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{
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if( glState.activeTMU < 0 || glState.activeTMU >= GL_MaxTextureUnits( ))
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{
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MsgDev( D_ERROR, "GL_TextureTarget: bad tmu state %i\n", glState.activeTMU );
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return;
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}
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if( glState.currentTextureTargets[glState.activeTMU] != target )
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{
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if( glState.currentTextureTargets[glState.activeTMU] != GL_NONE )
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pglDisable( glState.currentTextureTargets[glState.activeTMU] );
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glState.currentTextureTargets[glState.activeTMU] = target;
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if( target != GL_NONE )
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pglEnable( glState.currentTextureTargets[glState.activeTMU] );
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}
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}
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/*
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=================
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GL_TexGen
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=================
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*/
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void GL_TexGen( GLenum coord, GLenum mode )
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{
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int tmu = min( glConfig.max_texture_coords, glState.activeTMU );
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int bit, gen;
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switch( coord )
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{
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case GL_S:
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bit = 1;
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gen = GL_TEXTURE_GEN_S;
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break;
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case GL_T:
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bit = 2;
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gen = GL_TEXTURE_GEN_T;
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break;
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case GL_R:
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bit = 4;
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gen = GL_TEXTURE_GEN_R;
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break;
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case GL_Q:
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bit = 8;
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gen = GL_TEXTURE_GEN_Q;
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break;
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default: return;
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}
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if( mode )
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{
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if( !( glState.genSTEnabled[tmu] & bit ))
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{
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pglEnable( gen );
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glState.genSTEnabled[tmu] |= bit;
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}
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pglTexGeni( coord, GL_TEXTURE_GEN_MODE, mode );
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}
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else
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{
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if( glState.genSTEnabled[tmu] & bit )
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{
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pglDisable( gen );
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glState.genSTEnabled[tmu] &= ~bit;
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}
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}
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}
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/*
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=================
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GL_SetTexCoordArrayMode
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=================
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*/
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void GL_SetTexCoordArrayMode( GLenum mode )
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{
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int tmu = min( glConfig.max_texture_coords, glState.activeTMU );
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int bit, cmode = glState.texCoordArrayMode[tmu];
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if( mode == GL_TEXTURE_COORD_ARRAY )
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bit = 1;
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else if( mode == GL_TEXTURE_CUBE_MAP_ARB )
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bit = 2;
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else bit = 0;
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if( cmode != bit )
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{
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if( cmode == 1 ) pglDisableClientState( GL_TEXTURE_COORD_ARRAY );
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else if( cmode == 2 ) pglDisable( GL_TEXTURE_CUBE_MAP_ARB );
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if( bit == 1 ) pglEnableClientState( GL_TEXTURE_COORD_ARRAY );
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else if( bit == 2 ) pglEnable( GL_TEXTURE_CUBE_MAP_ARB );
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glState.texCoordArrayMode[tmu] = bit;
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}
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}
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/*
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=================
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GL_Cull
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=================
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*/
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void GL_Cull( GLenum cull )
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{
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if( !cull )
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{
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pglDisable( GL_CULL_FACE );
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glState.faceCull = 0;
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return;
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}
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pglEnable( GL_CULL_FACE );
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pglCullFace( cull );
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glState.faceCull = cull;
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}
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void GL_SetRenderMode( int mode )
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{
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pglTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE );
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switch( mode )
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{
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case kRenderNormal:
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default:
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pglDisable( GL_BLEND );
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pglDisable( GL_ALPHA_TEST );
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break;
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case kRenderTransColor:
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case kRenderTransTexture:
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pglEnable( GL_BLEND );
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pglDisable( GL_ALPHA_TEST );
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pglBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA );
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break;
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case kRenderTransAlpha:
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pglDisable( GL_BLEND );
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pglEnable( GL_ALPHA_TEST );
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break;
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case kRenderGlow:
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case kRenderTransAdd:
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pglEnable( GL_BLEND );
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pglDisable( GL_ALPHA_TEST );
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pglBlendFunc( GL_SRC_ALPHA, GL_ONE );
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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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SCREEN SHOTS
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==============================================================================
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*/
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// used for 'env' and 'sky' shots
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typedef struct envmap_s
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{
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vec3_t angles;
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int flags;
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} envmap_t;
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const envmap_t r_skyBoxInfo[6] =
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{
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{{ 0, 270, 180}, IMAGE_FLIP_X },
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{{ 0, 90, 180}, IMAGE_FLIP_X },
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{{ -90, 0, 180}, IMAGE_FLIP_X },
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{{ 90, 0, 180}, IMAGE_FLIP_X },
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{{ 0, 0, 180}, IMAGE_FLIP_X },
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{{ 0, 180, 180}, IMAGE_FLIP_X },
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};
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const envmap_t r_envMapInfo[6] =
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{
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{{ 0, 0, 90}, 0 },
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{{ 0, 180, -90}, 0 },
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{{ 0, 90, 0}, 0 },
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{{ 0, 270, 180}, 0 },
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{{-90, 180, -90}, 0 },
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{{ 90, 0, 90}, 0 }
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};
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/*
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===============
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VID_WriteOverviewScript
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Create overview script file
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===============
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*/
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void VID_WriteOverviewScript( void )
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{
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ref_overview_t *ov = &clgame.overView;
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string filename;
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file_t *f;
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Q_snprintf( filename, sizeof( filename ), "overviews/%s.txt", clgame.mapname );
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f = FS_Open( filename, "w", false );
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if( !f ) return;
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FS_Printf( f, "// overview description file for %s.bsp\n\n", clgame.mapname );
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FS_Print( f, "global\n{\n" );
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FS_Printf( f, "\tZOOM\t%.2f\n", ov->flZoom );
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FS_Printf( f, "\tORIGIN\t%.2f\t%.2f\t%.2f\n", ov->origin[0], ov->origin[1], ov->origin[2] );
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FS_Printf( f, "\tROTATED\t%i\n", ov->rotated ? 1 : 0 );
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FS_Print( f, "}\n\nlayer\n{\n" );
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FS_Printf( f, "\tIMAGE\t\"overviews/%s.bmp\"\n", clgame.mapname );
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FS_Printf( f, "\tHEIGHT\t%.2f\n", ov->zFar ); // ???
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FS_Print( f, "}\n" );
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FS_Close( f );
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}
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qboolean VID_ScreenShot( const char *filename, int shot_type )
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{
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rgbdata_t *r_shot;
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uint flags = IMAGE_FLIP_Y;
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int width = 0, height = 0;
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qboolean result;
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r_shot = Mem_Alloc( r_temppool, sizeof( rgbdata_t ));
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r_shot->width = (glState.width + 3) & ~3;
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r_shot->height = (glState.height + 3) & ~3;
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r_shot->flags = IMAGE_HAS_COLOR;
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r_shot->type = PF_RGB_24;
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r_shot->size = r_shot->width * r_shot->height * PFDesc[r_shot->type].bpp;
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r_shot->palette = NULL;
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r_shot->buffer = Mem_Alloc( r_temppool, r_shot->size );
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// get screen frame
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pglReadPixels( 0, 0, r_shot->width, r_shot->height, GL_RGB, GL_UNSIGNED_BYTE, r_shot->buffer );
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switch( shot_type )
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{
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case VID_SCREENSHOT:
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break;
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case VID_SNAPSHOT:
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FS_AllowDirectPaths( true );
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break;
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case VID_LEVELSHOT:
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flags |= IMAGE_RESAMPLE;
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if( glState.wideScreen )
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{
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height = 480;
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width = 800;
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}
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else
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{
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height = 480;
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width = 640;
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}
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break;
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case VID_MINISHOT:
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flags |= IMAGE_RESAMPLE;
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height = 200;
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width = 320;
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break;
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case VID_MAPSHOT:
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VID_WriteOverviewScript(); // store overview script too
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flags |= IMAGE_RESAMPLE|IMAGE_QUANTIZE; // GoldSrc request overviews in 8-bit format
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height = 768;
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width = 1024;
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break;
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}
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Image_Process( &r_shot, width, height, flags, NULL );
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// write image
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result = FS_SaveImage( filename, r_shot );
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host.write_to_clipboard = false; // disable write to clipboard
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FS_AllowDirectPaths( false ); // always reset after store screenshot
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FS_FreeImage( r_shot );
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return result;
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}
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/*
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=================
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VID_CubemapShot
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=================
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*/
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qboolean VID_CubemapShot( const char *base, uint size, const float *vieworg, qboolean skyshot )
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{
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rgbdata_t *r_shot, *r_side;
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byte *temp = NULL;
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byte *buffer = NULL;
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string basename;
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int i = 1, flags, result;
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if( !RI.drawWorld || !cl.worldmodel )
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return false;
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// make sure the specified size is valid
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while( i < size ) i<<=1;
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if( i != size ) return false;
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if( size > glState.width || size > glState.height )
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return false;
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// setup refdef
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RI.params |= RP_ENVVIEW; // do not render non-bmodel entities
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// alloc space
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temp = Mem_Alloc( r_temppool, size * size * 3 );
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buffer = Mem_Alloc( r_temppool, size * size * 3 * 6 );
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r_shot = Mem_Alloc( r_temppool, sizeof( rgbdata_t ));
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|
r_side = Mem_Alloc( r_temppool, sizeof( rgbdata_t ));
|
|
|
|
// use client vieworg
|
|
if( !vieworg ) vieworg = RI.vieworg;
|
|
|
|
for( i = 0; i < 6; i++ )
|
|
{
|
|
// go into 3d mode
|
|
R_Set2DMode( false );
|
|
|
|
if( skyshot )
|
|
{
|
|
R_DrawCubemapView( vieworg, r_skyBoxInfo[i].angles, size );
|
|
flags = r_skyBoxInfo[i].flags;
|
|
}
|
|
else
|
|
{
|
|
R_DrawCubemapView( vieworg, r_envMapInfo[i].angles, size );
|
|
flags = r_envMapInfo[i].flags;
|
|
}
|
|
|
|
pglReadPixels( 0, 0, size, size, GL_RGB, GL_UNSIGNED_BYTE, temp );
|
|
r_side->flags = IMAGE_HAS_COLOR;
|
|
r_side->width = r_side->height = size;
|
|
r_side->type = PF_RGB_24;
|
|
r_side->size = r_side->width * r_side->height * 3;
|
|
r_side->buffer = temp;
|
|
|
|
if( flags ) Image_Process( &r_side, 0, 0, flags, NULL );
|
|
memcpy( buffer + (size * size * 3 * i), r_side->buffer, size * size * 3 );
|
|
}
|
|
|
|
RI.params &= ~RP_ENVVIEW;
|
|
|
|
r_shot->flags = IMAGE_HAS_COLOR;
|
|
r_shot->flags |= (skyshot) ? IMAGE_SKYBOX : IMAGE_CUBEMAP;
|
|
r_shot->width = size;
|
|
r_shot->height = size;
|
|
r_shot->type = PF_RGB_24;
|
|
r_shot->size = r_shot->width * r_shot->height * 3 * 6;
|
|
r_shot->palette = NULL;
|
|
r_shot->buffer = buffer;
|
|
|
|
// make sure what we have right extension
|
|
Q_strncpy( basename, base, MAX_STRING );
|
|
COM_StripExtension( basename );
|
|
COM_DefaultExtension( basename, ".tga" );
|
|
|
|
// write image as 6 sides
|
|
result = FS_SaveImage( basename, r_shot );
|
|
FS_FreeImage( r_shot );
|
|
FS_FreeImage( r_side );
|
|
|
|
return result;
|
|
}
|
|
|
|
//=======================================================
|
|
|
|
/*
|
|
===============
|
|
R_ShowTextures
|
|
|
|
Draw all the images to the screen, on top of whatever
|
|
was there. This is used to test for texture thrashing.
|
|
===============
|
|
*/
|
|
void R_ShowTextures( void )
|
|
{
|
|
gltexture_t *image;
|
|
float x, y, w, h;
|
|
int total, start, end;
|
|
int i, j, k, base_w, base_h;
|
|
rgba_t color = { 192, 192, 192, 255 };
|
|
int charHeight, numTries = 0;
|
|
static qboolean showHelp = true;
|
|
string shortname;
|
|
|
|
if( !gl_showtextures->value )
|
|
return;
|
|
|
|
if( showHelp )
|
|
{
|
|
CL_CenterPrint( "use '<-' and '->' keys to change atlas page, ESC to quit", 0.25f );
|
|
showHelp = false;
|
|
}
|
|
|
|
GL_SetRenderMode( kRenderNormal );
|
|
pglClear( GL_COLOR_BUFFER_BIT );
|
|
pglFinish();
|
|
|
|
base_w = 8; // textures view by horizontal
|
|
base_h = 6; // textures view by vertical
|
|
|
|
rebuild_page:
|
|
total = base_w * base_h;
|
|
start = total * (gl_showtextures->value - 1);
|
|
end = total * gl_showtextures->value;
|
|
if( end > MAX_TEXTURES ) end = MAX_TEXTURES;
|
|
|
|
w = glState.width / base_w;
|
|
h = glState.height / base_h;
|
|
|
|
Con_DrawStringLen( NULL, NULL, &charHeight );
|
|
|
|
for( i = j = 0; i < MAX_TEXTURES; i++ )
|
|
{
|
|
image = R_GetTexture( i );
|
|
if( j == start ) break; // found start
|
|
if( pglIsTexture( image->texnum )) j++;
|
|
}
|
|
|
|
if( i == MAX_TEXTURES && gl_showtextures->value != 1 )
|
|
{
|
|
// bad case, rewind to one and try again
|
|
Cvar_SetValue( "r_showtextures", max( 1, gl_showtextures->value - 1 ));
|
|
if( ++numTries < 2 ) goto rebuild_page; // to prevent infinite loop
|
|
}
|
|
|
|
for( k = 0; i < MAX_TEXTURES; i++ )
|
|
{
|
|
if( j == end ) break; // page is full
|
|
|
|
image = R_GetTexture( i );
|
|
if( !pglIsTexture( image->texnum ))
|
|
continue;
|
|
|
|
x = k % base_w * w;
|
|
y = k / base_w * h;
|
|
|
|
pglColor4f( 1.0f, 1.0f, 1.0f, 1.0f );
|
|
GL_Bind( XASH_TEXTURE0, i ); // NOTE: don't use image->texnum here, because skybox has a 'wrong' indexes
|
|
|
|
if( FBitSet( image->flags, TF_DEPTHMAP ) && !FBitSet( image->flags, TF_NOCOMPARE ))
|
|
pglTexParameteri( image->target, GL_TEXTURE_COMPARE_MODE_ARB, GL_NONE );
|
|
|
|
pglBegin( GL_QUADS );
|
|
pglTexCoord2f( 0, 0 );
|
|
pglVertex2f( x, y );
|
|
if( image->target == GL_TEXTURE_RECTANGLE_EXT )
|
|
pglTexCoord2f( image->width, 0 );
|
|
else pglTexCoord2f( 1, 0 );
|
|
pglVertex2f( x + w, y );
|
|
if( image->target == GL_TEXTURE_RECTANGLE_EXT )
|
|
pglTexCoord2f( image->width, image->height );
|
|
else pglTexCoord2f( 1, 1 );
|
|
pglVertex2f( x + w, y + h );
|
|
if( image->target == GL_TEXTURE_RECTANGLE_EXT )
|
|
pglTexCoord2f( 0, image->height );
|
|
else pglTexCoord2f( 0, 1 );
|
|
pglVertex2f( x, y + h );
|
|
pglEnd();
|
|
|
|
if( FBitSet( image->flags, TF_DEPTHMAP ) && !FBitSet( image->flags, TF_NOCOMPARE ))
|
|
pglTexParameteri( image->target, GL_TEXTURE_COMPARE_MODE_ARB, GL_COMPARE_R_TO_TEXTURE_ARB );
|
|
|
|
COM_FileBase( image->name, shortname );
|
|
if( Q_strlen( shortname ) > 18 )
|
|
{
|
|
// cutoff too long names, it looks ugly
|
|
shortname[16] = '.';
|
|
shortname[17] = '.';
|
|
shortname[18] = '\0';
|
|
}
|
|
Con_DrawString( x + 1, y + h - charHeight, shortname, color );
|
|
j++, k++;
|
|
}
|
|
|
|
CL_DrawCenterPrint ();
|
|
pglFinish();
|
|
}
|