178 lines
4.7 KiB
C
178 lines
4.7 KiB
C
/*
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This file is part of Warzone 2100.
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Copyright (C) 1999-2004 Eidos Interactive
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Copyright (C) 2005-2007 Warzone Resurrection Project
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Warzone 2100 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 2 of the License, or
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(at your option) any later version.
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Warzone 2100 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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You should have received a copy of the GNU General Public License
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along with Warzone 2100; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/***************************************************************************/
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/*
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* pieMode.h
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*
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* renderer control for pumpkin library functions.
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*
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*/
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/***************************************************************************/
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#include "lib/framework/frame.h"
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#include <SDL/SDL.h>
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#include <SDL/SDL_opengl.h>
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#include "lib/ivis_common/piedef.h"
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#include "lib/ivis_common/piestate.h"
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#include "lib/ivis_common/piemode.h"
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#include "piematrix.h"
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#include "lib/ivis_common/ivi.h"
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#include "lib/ivis_common/piefunc.h"
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#include "lib/ivis_common/tex.h"
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#include "lib/ivis_common/rendmode.h"
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#include "lib/ivis_common/pieclip.h"
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#include "screen.h"
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/***************************************************************************/
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/*
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* Local Definitions
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*/
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/***************************************************************************/
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#define DIVIDE_TABLE_SIZE 1024
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/***************************************************************************/
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/*
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* Local Variables
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*/
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/***************************************************************************/
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Sint32 _iVPRIM_DIVTABLE[DIVIDE_TABLE_SIZE];
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/***************************************************************************/
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/*
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* Local ProtoTypes
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*/
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/***************************************************************************/
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extern void screenDoDumpToDiskIfRequired(void);
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/***************************************************************************/
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/*
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* Source
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*/
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/***************************************************************************/
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BOOL pie_Initialise(void)
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{
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int i;
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pie_InitMaths();
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pie_TexInit();
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rendSurface.flags = REND_SURFACE_UNDEFINED;
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rendSurface.buffer = NULL;
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rendSurface.size = 0;
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// divtable: first entry == unity to (ie n/0 == 1 !)
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_iVPRIM_DIVTABLE[0] = iV_DIVMULTP;
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for (i=1; i<DIVIDE_TABLE_SIZE; i++)
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{
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_iVPRIM_DIVTABLE[i-0] = MAKEINT ( FRACTdiv(MAKEFRACT(1),MAKEFRACT(i)) * iV_DIVMULTP);
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}
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/* Find texture compression extension */
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if (check_extension("GL_ARB_texture_compression"))
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{
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debug(LOG_TEXTURE, "Texture compression: Yes");
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wz_texture_compression = GL_COMPRESSED_RGBA_ARB;
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} else {
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debug(LOG_TEXTURE, "Texture compression: No");
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wz_texture_compression = GL_RGBA;
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}
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pie_MatInit();
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_TEX_INDEX = 0;
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rendSurface.buffer = 0;
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rendSurface.flags = REND_SURFACE_SCREEN;
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rendSurface.width = pie_GetVideoBufferWidth();
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rendSurface.height = pie_GetVideoBufferHeight();
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rendSurface.xcentre = pie_GetVideoBufferWidth()/2;
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rendSurface.ycentre = pie_GetVideoBufferHeight()/2;
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rendSurface.clip.left = 0;
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rendSurface.clip.top = 0;
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rendSurface.clip.right = pie_GetVideoBufferWidth();
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rendSurface.clip.bottom = pie_GetVideoBufferHeight();
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rendSurface.xpshift = 10;
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rendSurface.ypshift = 10;
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pie_SetDefaultStates();
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iV_RenderAssign(&rendSurface);
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return TRUE;
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}
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void pie_ShutDown(void) {
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rendSurface.buffer = NULL;
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rendSurface.flags = REND_SURFACE_UNDEFINED;
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rendSurface.size = 0;
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pie_CleanUp();
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}
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/***************************************************************************/
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void pie_ScreenFlip(int clearMode) {
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GLbitfield clearFlags = 0;
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screenDoDumpToDiskIfRequired();
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SDL_GL_SwapBuffers();
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switch (clearMode&CLEAR_MODE_MASK) {
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case CLEAR_OFF_AND_NO_BUFFER_DOWNLOAD:
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break;
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case CLEAR_BLACK:
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glDepthMask(GL_TRUE);
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glClearColor(0.0f,0.0f,0.0f,0.0f);
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clearFlags = GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT;
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break;
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default:
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glDepthMask(GL_TRUE);
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clearFlags = GL_DEPTH_BUFFER_BIT;
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break;
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}
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if(clearMode&CLEAR_SHADOW_MASK)
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{
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clearFlags |= GL_STENCIL_BUFFER_BIT;
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}
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if(clearFlags)
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{
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glClear(clearFlags);
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}
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if (screen_GetBackDrop()) {
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screen_Upload(NULL);
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}
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}
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/***************************************************************************/
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UDWORD pie_GetResScalingFactor( void ) {
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// UDWORD resWidth; //n.b. resolution width implies resolution height...!
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if (pie_GetVideoBufferWidth() * 4 > pie_GetVideoBufferHeight() * 5) {
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return pie_GetVideoBufferHeight()*5/4/6;
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} else {
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return pie_GetVideoBufferWidth()/6;
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}
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}
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