mirror of
https://github.com/FWGS/xash3d-fwgs
synced 2024-12-12 20:10:46 +01:00
515 lines
11 KiB
C
515 lines
11 KiB
C
/*
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vid_sdl.c - SDL vid component
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Copyright (C) 2018 a1batross
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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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// GL API function pointers, if any, reside in this translation unit
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#define APIENTRY_LINKAGE
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#include "gl_local.h"
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#include "gl_export.h"
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#ifdef XASH_GL4ES
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#include "gl4es/include/gl4esinit.h"
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#endif
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ref_api_t gEngfuncs;
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ref_globals_t *gpGlobals;
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static void R_ClearScreen( void )
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{
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pglClearColor( 0.0f, 0.0f, 0.0f, 0.0f );
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pglClear( GL_COLOR_BUFFER_BIT );
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}
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static const byte *R_GetTextureOriginalBuffer( unsigned int idx )
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{
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gl_texture_t *glt = R_GetTexture( idx );
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if( !glt || !glt->original || !glt->original->buffer )
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return NULL;
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return glt->original->buffer;
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}
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/*
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=============
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CL_FillRGBA
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=============
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*/
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static void CL_FillRGBA( float _x, float _y, float _w, float _h, int r, int g, int b, int a )
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{
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pglDisable( GL_TEXTURE_2D );
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pglEnable( GL_BLEND );
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pglTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE );
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pglBlendFunc( GL_SRC_ALPHA, GL_ONE );
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pglColor4f( r / 255.0f, g / 255.0f, b / 255.0f, a / 255.0f );
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pglBegin( GL_QUADS );
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pglVertex2f( _x, _y );
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pglVertex2f( _x + _w, _y );
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pglVertex2f( _x + _w, _y + _h );
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pglVertex2f( _x, _y + _h );
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pglEnd ();
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pglColor3f( 1.0f, 1.0f, 1.0f );
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pglEnable( GL_TEXTURE_2D );
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pglDisable( GL_BLEND );
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}
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/*
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=============
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pfnFillRGBABlend
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=============
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*/
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static void GAME_EXPORT CL_FillRGBABlend( float _x, float _y, float _w, float _h, int r, int g, int b, int a )
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{
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pglDisable( GL_TEXTURE_2D );
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pglEnable( GL_BLEND );
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pglTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE );
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pglBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA );
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pglColor4f( r / 255.0f, g / 255.0f, b / 255.0f, a / 255.0f );
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pglBegin( GL_QUADS );
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pglVertex2f( _x, _y );
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pglVertex2f( _x + _w, _y );
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pglVertex2f( _x + _w, _y + _h );
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pglVertex2f( _x, _y + _h );
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pglEnd ();
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pglColor3f( 1.0f, 1.0f, 1.0f );
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pglEnable( GL_TEXTURE_2D );
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pglDisable( GL_BLEND );
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}
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void Mod_BrushUnloadTextures( model_t *mod )
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{
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int i;
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for( i = 0; i < mod->numtextures; i++ )
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{
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texture_t *tx = mod->textures[i];
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if( !tx || tx->gl_texturenum == tr.defaultTexture )
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continue; // free slot
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GL_FreeTexture( tx->gl_texturenum ); // main texture
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GL_FreeTexture( tx->fb_texturenum ); // luma texture
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}
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}
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void Mod_UnloadTextures( model_t *mod )
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{
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Assert( mod != NULL );
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switch( mod->type )
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{
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case mod_studio:
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Mod_StudioUnloadTextures( mod->cache.data );
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break;
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case mod_alias:
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Mod_AliasUnloadTextures( mod->cache.data );
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break;
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case mod_brush:
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Mod_BrushUnloadTextures( mod );
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break;
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case mod_sprite:
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Mod_SpriteUnloadTextures( mod->cache.data );
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break;
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default:
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ASSERT( 0 );
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break;
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}
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}
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qboolean Mod_ProcessRenderData( model_t *mod, qboolean create, const byte *buf )
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{
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qboolean loaded = true;
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if( create )
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{
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switch( mod->type )
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{
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case mod_studio:
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// Mod_LoadStudioModel( mod, buf, loaded );
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break;
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case mod_sprite:
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Mod_LoadSpriteModel( mod, buf, &loaded, mod->numtexinfo );
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break;
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case mod_alias:
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Mod_LoadAliasModel( mod, buf, &loaded );
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break;
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case mod_brush:
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// Mod_LoadBrushModel( mod, buf, loaded );
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break;
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default: gEngfuncs.Host_Error( "Mod_LoadModel: unsupported type %d\n", mod->type );
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}
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}
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if( loaded && gEngfuncs.drawFuncs->Mod_ProcessUserData )
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gEngfuncs.drawFuncs->Mod_ProcessUserData( mod, create, buf );
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if( !create )
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Mod_UnloadTextures( mod );
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return loaded;
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}
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static int GL_RefGetParm( int parm, int arg )
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{
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gl_texture_t *glt;
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switch( parm )
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{
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case PARM_TEX_WIDTH:
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glt = R_GetTexture( arg );
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return glt->width;
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case PARM_TEX_HEIGHT:
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glt = R_GetTexture( arg );
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return glt->height;
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case PARM_TEX_SRC_WIDTH:
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glt = R_GetTexture( arg );
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return glt->srcWidth;
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case PARM_TEX_SRC_HEIGHT:
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glt = R_GetTexture( arg );
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return glt->srcHeight;
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case PARM_TEX_GLFORMAT:
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glt = R_GetTexture( arg );
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return glt->format;
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case PARM_TEX_ENCODE:
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glt = R_GetTexture( arg );
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return glt->encode;
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case PARM_TEX_MIPCOUNT:
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glt = R_GetTexture( arg );
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return glt->numMips;
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case PARM_TEX_DEPTH:
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glt = R_GetTexture( arg );
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return glt->depth;
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case PARM_TEX_SKYBOX:
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Assert( arg >= 0 && arg < 6 );
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return tr.skyboxTextures[arg];
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case PARM_TEX_SKYTEXNUM:
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return tr.skytexturenum;
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case PARM_TEX_LIGHTMAP:
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arg = bound( 0, arg, MAX_LIGHTMAPS - 1 );
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return tr.lightmapTextures[arg];
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case PARM_WIDESCREEN:
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return gpGlobals->wideScreen;
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case PARM_FULLSCREEN:
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return gpGlobals->fullScreen;
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case PARM_SCREEN_WIDTH:
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return gpGlobals->width;
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case PARM_SCREEN_HEIGHT:
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return gpGlobals->height;
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case PARM_TEX_TARGET:
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glt = R_GetTexture( arg );
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return glt->target;
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case PARM_TEX_TEXNUM:
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glt = R_GetTexture( arg );
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return glt->texnum;
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case PARM_TEX_FLAGS:
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glt = R_GetTexture( arg );
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return glt->flags;
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case PARM_ACTIVE_TMU:
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return glState.activeTMU;
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case PARM_LIGHTSTYLEVALUE:
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arg = bound( 0, arg, MAX_LIGHTSTYLES - 1 );
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return tr.lightstylevalue[arg];
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case PARM_MAX_IMAGE_UNITS:
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return GL_MaxTextureUnits();
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case PARM_REBUILD_GAMMA:
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return glConfig.softwareGammaUpdate;
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case PARM_SURF_SAMPLESIZE:
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if( arg >= 0 && arg < WORLDMODEL->numsurfaces )
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return gEngfuncs.Mod_SampleSizeForFace( &WORLDMODEL->surfaces[arg] );
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return LM_SAMPLE_SIZE;
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case PARM_GL_CONTEXT_TYPE:
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return glConfig.context;
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case PARM_GLES_WRAPPER:
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return glConfig.wrapper;
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case PARM_STENCIL_ACTIVE:
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return glState.stencilEnabled;
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case PARM_SKY_SPHERE:
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return ENGINE_GET_PARM_( parm, arg ) && !tr.fCustomSkybox;
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default:
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return ENGINE_GET_PARM_( parm, arg );
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}
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return 0;
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}
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static void R_GetDetailScaleForTexture( int texture, float *xScale, float *yScale )
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{
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gl_texture_t *glt = R_GetTexture( texture );
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if( xScale ) *xScale = glt->xscale;
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if( yScale ) *yScale = glt->yscale;
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}
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static void R_GetExtraParmsForTexture( int texture, byte *red, byte *green, byte *blue, byte *density )
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{
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gl_texture_t *glt = R_GetTexture( texture );
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if( red ) *red = glt->fogParams[0];
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if( green ) *green = glt->fogParams[1];
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if( blue ) *blue = glt->fogParams[2];
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if( density ) *density = glt->fogParams[3];
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}
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static void R_SetCurrentEntity( cl_entity_t *ent )
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{
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RI.currententity = ent;
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// set model also
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if( RI.currententity != NULL )
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{
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RI.currentmodel = RI.currententity->model;
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}
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}
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static void R_SetCurrentModel( model_t *mod )
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{
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RI.currentmodel = mod;
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}
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static float R_GetFrameTime( void )
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{
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return tr.frametime;
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}
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static const char *GL_TextureName( unsigned int texnum )
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{
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return R_GetTexture( texnum )->name;
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}
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const byte *GL_TextureData( unsigned int texnum )
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{
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rgbdata_t *pic = R_GetTexture( texnum )->original;
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if( pic != NULL )
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return pic->buffer;
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return NULL;
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}
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void R_ProcessEntData( qboolean allocate )
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{
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if( !allocate )
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{
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tr.draw_list->num_solid_entities = 0;
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tr.draw_list->num_trans_entities = 0;
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tr.draw_list->num_beam_entities = 0;
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}
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if( gEngfuncs.drawFuncs->R_ProcessEntData )
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gEngfuncs.drawFuncs->R_ProcessEntData( allocate );
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}
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qboolean R_SetDisplayTransform( ref_screen_rotation_t rotate, int offset_x, int offset_y, float scale_x, float scale_y )
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{
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qboolean ret = true;
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if( rotate > 0 )
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{
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gEngfuncs.Con_Printf("rotation transform not supported\n");
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ret = false;
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}
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if( offset_x || offset_y )
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{
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gEngfuncs.Con_Printf("offset transform not supported\n");
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ret = false;
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}
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if( scale_x != 1.0f || scale_y != 1.0f )
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{
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gEngfuncs.Con_Printf("scale transform not supported\n");
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ret = false;
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}
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return ret;
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}
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static void* GAME_EXPORT R_GetProcAddress( const char *name )
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{
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#ifdef XASH_GL4ES
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return gl4es_GetProcAddress( name );
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#else // TODO: other wrappers
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return gEngfuncs.GL_GetProcAddress( name );
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#endif
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}
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static const char *R_GetConfigName( void )
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{
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return "opengl";
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}
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ref_interface_t gReffuncs =
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{
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R_Init,
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R_Shutdown,
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R_GetConfigName,
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R_SetDisplayTransform,
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GL_SetupAttributes,
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GL_InitExtensions,
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GL_ClearExtensions,
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R_BeginFrame,
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R_RenderScene,
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R_EndFrame,
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R_PushScene,
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R_PopScene,
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GL_BackendStartFrame,
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GL_BackendEndFrame,
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R_ClearScreen,
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R_AllowFog,
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GL_SetRenderMode,
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R_AddEntity,
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CL_AddCustomBeam,
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R_ProcessEntData,
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R_ShowTextures,
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R_GetTextureOriginalBuffer,
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GL_LoadTextureFromBuffer,
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GL_ProcessTexture,
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R_SetupSky,
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R_Set2DMode,
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R_DrawStretchRaw,
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R_DrawStretchPic,
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R_DrawTileClear,
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CL_FillRGBA,
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CL_FillRGBABlend,
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R_WorldToScreen,
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VID_ScreenShot,
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VID_CubemapShot,
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R_LightPoint,
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R_DecalShoot,
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R_DecalRemoveAll,
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R_CreateDecalList,
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R_ClearAllDecals,
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R_StudioEstimateFrame,
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R_StudioLerpMovement,
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CL_InitStudioAPI,
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R_InitSkyClouds,
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GL_SubdivideSurface,
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CL_RunLightStyles,
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R_GetSpriteParms,
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R_GetSpriteTexture,
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Mod_LoadMapSprite,
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Mod_ProcessRenderData,
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Mod_StudioLoadTextures,
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CL_DrawParticles,
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CL_DrawTracers,
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CL_DrawBeams,
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R_BeamCull,
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GL_RefGetParm,
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R_GetDetailScaleForTexture,
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R_GetExtraParmsForTexture,
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R_GetFrameTime,
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R_SetCurrentEntity,
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R_SetCurrentModel,
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GL_FindTexture,
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GL_TextureName,
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GL_TextureData,
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GL_LoadTexture,
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GL_CreateTexture,
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GL_LoadTextureArray,
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GL_CreateTextureArray,
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GL_FreeTexture,
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DrawSingleDecal,
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R_DecalSetupVerts,
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R_EntityRemoveDecals,
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R_UploadStretchRaw,
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GL_Bind,
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GL_SelectTexture,
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GL_LoadTexMatrixExt,
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GL_LoadIdentityTexMatrix,
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GL_CleanUpTextureUnits,
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GL_TexGen,
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GL_TextureTarget,
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GL_SetTexCoordArrayMode,
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GL_UpdateTexSize,
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NULL,
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NULL,
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CL_DrawParticlesExternal,
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R_LightVec,
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R_StudioGetTexture,
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R_RenderFrame,
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Mod_SetOrthoBounds,
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R_SpeedsMessage,
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Mod_GetCurrentVis,
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R_NewMap,
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R_ClearScene,
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R_GetProcAddress,
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TriRenderMode,
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TriBegin,
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TriEnd,
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_TriColor4f,
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_TriColor4ub,
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TriTexCoord2f,
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TriVertex3fv,
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TriVertex3f,
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TriFog,
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R_ScreenToWorld,
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TriGetMatrix,
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TriFogParams,
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TriCullFace,
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VGUI_DrawInit,
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VGUI_DrawShutdown,
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VGUI_SetupDrawingText,
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VGUI_SetupDrawingRect,
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VGUI_SetupDrawingImage,
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VGUI_BindTexture,
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VGUI_EnableTexture,
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VGUI_CreateTexture,
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VGUI_UploadTexture,
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VGUI_UploadTextureBlock,
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VGUI_DrawQuad,
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VGUI_GetTextureSizes,
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VGUI_GenerateTexture,
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};
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int EXPORT GetRefAPI( int version, ref_interface_t *funcs, ref_api_t *engfuncs, ref_globals_t *globals )
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{
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if( version != REF_API_VERSION )
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return 0;
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// fill in our callbacks
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memcpy( funcs, &gReffuncs, sizeof( ref_interface_t ));
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memcpy( &gEngfuncs, engfuncs, sizeof( ref_api_t ));
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gpGlobals = globals;
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return REF_API_VERSION;
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}
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