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jkxr/Projects/Android/jni/OpenJK/code/rd-vanilla/tr_backend.cpp

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Initial Commit Opens in Android Studio but haven't even tried to build it yet (it won't.. I know that much!)
2022-09-18 15:37:21 +00:00
/*
===========================================================================
Copyright (C) 1999 - 2005, Id Software, Inc.
Copyright (C) 2000 - 2013, Raven Software, Inc.
Copyright (C) 2001 - 2013, Activision, Inc.
Copyright (C) 2013 - 2015, OpenJK contributors
This file is part of the OpenJK source code.
OpenJK is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License version 2 as
published by the Free Software Foundation.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, see <http://www.gnu.org/licenses/>.
===========================================================================
*/
#include "../server/exe_headers.h"
#include "tr_local.h"
#include "tr_common.h"
backEndData_t *backEndData;
backEndState_t backEnd;
bool tr_stencilled = false;
extern qboolean tr_distortionPrePost; //tr_shadows.cpp
extern qboolean tr_distortionNegate; //tr_shadows.cpp
extern void RB_CaptureScreenImage(void); //tr_shadows.cpp
extern void RB_DistortionFill(void); //tr_shadows.cpp
static void RB_DrawGlowOverlay();
static void RB_BlurGlowTexture();
// Whether we are currently rendering only glowing objects or not.
bool g_bRenderGlowingObjects = false;
// Whether the current hardware supports dynamic glows/flares.
bool g_bDynamicGlowSupported = false;
static const float s_flipMatrix[16] = {
// convert from our coordinate system (looking down X)
// to OpenGL's coordinate system (looking down -Z)
0, 0, -1, 0,
-1, 0, 0, 0,
0, 1, 0, 0,
0, 0, 0, 1
};
/*
** GL_Bind
*/
void GL_Bind( image_t *image ) {
int texnum;
if ( !image ) {
ri.Printf( PRINT_WARNING, "GL_Bind: NULL image\n" );
texnum = tr.defaultImage->texnum;
} else {
texnum = image->texnum;
}
if ( r_nobind->integer && tr.dlightImage ) { // performance evaluation option
texnum = tr.dlightImage->texnum;
}
if ( glState.currenttextures[glState.currenttmu] != texnum ) {
image->frameUsed = tr.frameCount;
glState.currenttextures[glState.currenttmu] = texnum;
qglBindTexture (GL_TEXTURE_2D, texnum);
}
}
/*
** GL_SelectTexture
*/
void GL_SelectTexture( int unit )
{
if ( glState.currenttmu == unit )
{
return;
}
if ( unit == 0 )
{
qglActiveTextureARB( GL_TEXTURE0_ARB );
GLimp_LogComment( "glActiveTextureARB( GL_TEXTURE0_ARB )\n" );
qglClientActiveTextureARB( GL_TEXTURE0_ARB );
GLimp_LogComment( "glClientActiveTextureARB( GL_TEXTURE0_ARB )\n" );
}
else if ( unit == 1 )
{
qglActiveTextureARB( GL_TEXTURE1_ARB );
GLimp_LogComment( "glActiveTextureARB( GL_TEXTURE1_ARB )\n" );
qglClientActiveTextureARB( GL_TEXTURE1_ARB );
GLimp_LogComment( "glClientActiveTextureARB( GL_TEXTURE1_ARB )\n" );
}
else if ( unit == 2 )
{
qglActiveTextureARB( GL_TEXTURE2_ARB );
GLimp_LogComment( "glActiveTextureARB( GL_TEXTURE2_ARB )\n" );
qglClientActiveTextureARB( GL_TEXTURE2_ARB );
GLimp_LogComment( "glClientActiveTextureARB( GL_TEXTURE2_ARB )\n" );
}
else if ( unit == 3 )
{
qglActiveTextureARB( GL_TEXTURE3_ARB );
GLimp_LogComment( "glActiveTextureARB( GL_TEXTURE3_ARB )\n" );
qglClientActiveTextureARB( GL_TEXTURE3_ARB );
GLimp_LogComment( "glClientActiveTextureARB( GL_TEXTURE3_ARB )\n" );
}
else {
Com_Error( ERR_DROP, "GL_SelectTexture: unit = %i", unit );
}
glState.currenttmu = unit;
}
/*
** GL_Cull
*/
void GL_Cull( int cullType ) {
if ( glState.faceCulling == cullType ) {
return;
}
glState.faceCulling = cullType;
if (backEnd.projection2D){ //don't care, we're in 2d when it's always disabled
return;
}
if ( cullType == CT_TWO_SIDED )
{
qglDisable( GL_CULL_FACE );
}
else
{
qglEnable( GL_CULL_FACE );
if ( cullType == CT_BACK_SIDED )
{
if ( backEnd.viewParms.isMirror )
{
qglCullFace( GL_FRONT );
}
else
{
qglCullFace( GL_BACK );
}
}
else
{
if ( backEnd.viewParms.isMirror )
{
qglCullFace( GL_BACK );
}
else
{
qglCullFace( GL_FRONT );
}
}
}
}
/*
** GL_TexEnv
*/
void GL_TexEnv( int env )
{
if ( env == glState.texEnv[glState.currenttmu] )
{
return;
}
glState.texEnv[glState.currenttmu] = env;
switch ( env )
{
case GL_MODULATE:
qglTexEnvf( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE );
break;
case GL_REPLACE:
qglTexEnvf( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE );
break;
case GL_DECAL:
qglTexEnvf( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL );
break;
case GL_ADD:
qglTexEnvf( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_ADD );
break;
default:
Com_Error( ERR_DROP, "GL_TexEnv: invalid env '%d' passed\n", env );
break;
}
}
/*
** GL_State
**
** This routine is responsible for setting the most commonly changed state
** in Q3.
*/
void GL_State( uint32_t stateBits )
{
uint32_t diff = stateBits ^ glState.glStateBits;
if ( !diff )
{
return;
}
//
// check depthFunc bits
//
if ( diff & GLS_DEPTHFUNC_EQUAL )
{
if ( stateBits & GLS_DEPTHFUNC_EQUAL )
{
qglDepthFunc( GL_EQUAL );
}
else
{
qglDepthFunc( GL_LEQUAL );
}
}
//
// check blend bits
//
if ( diff & ( GLS_SRCBLEND_BITS | GLS_DSTBLEND_BITS ) )
{
GLenum srcFactor, dstFactor;
if ( stateBits & ( GLS_SRCBLEND_BITS | GLS_DSTBLEND_BITS ) )
{
switch ( stateBits & GLS_SRCBLEND_BITS )
{
case GLS_SRCBLEND_ZERO:
srcFactor = GL_ZERO;
break;
case GLS_SRCBLEND_ONE:
srcFactor = GL_ONE;
break;
case GLS_SRCBLEND_DST_COLOR:
srcFactor = GL_DST_COLOR;
break;
case GLS_SRCBLEND_ONE_MINUS_DST_COLOR:
srcFactor = GL_ONE_MINUS_DST_COLOR;
break;
case GLS_SRCBLEND_SRC_ALPHA:
srcFactor = GL_SRC_ALPHA;
break;
case GLS_SRCBLEND_ONE_MINUS_SRC_ALPHA:
srcFactor = GL_ONE_MINUS_SRC_ALPHA;
break;
case GLS_SRCBLEND_DST_ALPHA:
srcFactor = GL_DST_ALPHA;
break;
case GLS_SRCBLEND_ONE_MINUS_DST_ALPHA:
srcFactor = GL_ONE_MINUS_DST_ALPHA;
break;
case GLS_SRCBLEND_ALPHA_SATURATE:
srcFactor = GL_SRC_ALPHA_SATURATE;
break;
default:
srcFactor = GL_ONE; // to get warning to shut up
Com_Error( ERR_DROP, "GL_State: invalid src blend state bits\n" );
break;
}
switch ( stateBits & GLS_DSTBLEND_BITS )
{
case GLS_DSTBLEND_ZERO:
dstFactor = GL_ZERO;
break;
case GLS_DSTBLEND_ONE:
dstFactor = GL_ONE;
break;
case GLS_DSTBLEND_SRC_COLOR:
dstFactor = GL_SRC_COLOR;
break;
case GLS_DSTBLEND_ONE_MINUS_SRC_COLOR:
dstFactor = GL_ONE_MINUS_SRC_COLOR;
break;
case GLS_DSTBLEND_SRC_ALPHA:
dstFactor = GL_SRC_ALPHA;
break;
case GLS_DSTBLEND_ONE_MINUS_SRC_ALPHA:
dstFactor = GL_ONE_MINUS_SRC_ALPHA;
break;
case GLS_DSTBLEND_DST_ALPHA:
dstFactor = GL_DST_ALPHA;
break;
case GLS_DSTBLEND_ONE_MINUS_DST_ALPHA:
dstFactor = GL_ONE_MINUS_DST_ALPHA;
break;
default:
dstFactor = GL_ONE; // to get warning to shut up
Com_Error( ERR_DROP, "GL_State: invalid dst blend state bits\n" );
break;
}
qglEnable( GL_BLEND );
qglBlendFunc( srcFactor, dstFactor );
}
else
{
qglDisable( GL_BLEND );
}
}
//
// check depthmask
//
if ( diff & GLS_DEPTHMASK_TRUE )
{
if ( stateBits & GLS_DEPTHMASK_TRUE )
{
qglDepthMask( GL_TRUE );
}
else
{
qglDepthMask( GL_FALSE );
}
}
//
// fill/line mode
//
if ( diff & GLS_POLYMODE_LINE )
{
if ( stateBits & GLS_POLYMODE_LINE )
{
qglPolygonMode( GL_FRONT_AND_BACK, GL_LINE );
}
else
{
qglPolygonMode( GL_FRONT_AND_BACK, GL_FILL );
}
}
//
// depthtest
//
if ( diff & GLS_DEPTHTEST_DISABLE )
{
if ( stateBits & GLS_DEPTHTEST_DISABLE )
{
qglDisable( GL_DEPTH_TEST );
}
else
{
qglEnable( GL_DEPTH_TEST );
}
}
//
// alpha test
//
if ( diff & GLS_ATEST_BITS )
{
switch ( stateBits & GLS_ATEST_BITS )
{
case 0:
qglDisable( GL_ALPHA_TEST );
break;
case GLS_ATEST_GT_0:
qglEnable( GL_ALPHA_TEST );
qglAlphaFunc( GL_GREATER, 0.0f );
break;
case GLS_ATEST_LT_80:
qglEnable( GL_ALPHA_TEST );
qglAlphaFunc( GL_LESS, 0.5f );
break;
case GLS_ATEST_GE_80:
qglEnable( GL_ALPHA_TEST );
qglAlphaFunc( GL_GEQUAL, 0.5f );
break;
case GLS_ATEST_GE_C0:
qglEnable( GL_ALPHA_TEST );
qglAlphaFunc( GL_GEQUAL, 0.75f );
break;
default:
assert( 0 );
break;
}
}
glState.glStateBits = stateBits;
}
/*
================
RB_Hyperspace
A player has predicted a teleport, but hasn't arrived yet
================
*/
static void RB_Hyperspace( void ) {
float c;
if ( !backEnd.isHyperspace ) {
// do initialization shit
}
c = ( backEnd.refdef.time & 255 ) / 255.0f;
qglClearColor( c, c, c, 1 );
qglClear( GL_COLOR_BUFFER_BIT );
backEnd.isHyperspace = qtrue;
}
void SetViewportAndScissor( void ) {
qglMatrixMode(GL_PROJECTION);
qglLoadMatrixf( backEnd.viewParms.projectionMatrix );
qglMatrixMode(GL_MODELVIEW);
// set the window clipping
qglViewport( backEnd.viewParms.viewportX, backEnd.viewParms.viewportY,
backEnd.viewParms.viewportWidth, backEnd.viewParms.viewportHeight );
qglScissor( backEnd.viewParms.viewportX, backEnd.viewParms.viewportY,
backEnd.viewParms.viewportWidth, backEnd.viewParms.viewportHeight );
}
/*
=================
RB_BeginDrawingView
Any mirrored or portaled views have already been drawn, so prepare
to actually render the visible surfaces for this view
=================
*/
static void RB_BeginDrawingView (void) {
int clearBits = GL_DEPTH_BUFFER_BIT;
// sync with gl if needed
if ( r_finish->integer == 1 && !glState.finishCalled ) {
qglFinish ();
glState.finishCalled = qtrue;
}
if ( r_finish->integer == 0 ) {
glState.finishCalled = qtrue;
}
// we will need to change the projection matrix before drawing
// 2D images again
backEnd.projection2D = qfalse;
//
// set the modelview matrix for the viewer
//
SetViewportAndScissor();
// ensures that depth writes are enabled for the depth clear
GL_State( GLS_DEFAULT );
// clear relevant buffers
if ( r_measureOverdraw->integer || r_shadows->integer == 2 || tr_stencilled )
{
clearBits |= GL_STENCIL_BUFFER_BIT;
tr_stencilled = false;
}
if (skyboxportal)
{
if ( backEnd.refdef.rdflags & RDF_SKYBOXPORTAL )
{ // portal scene, clear whatever is necessary
if (r_fastsky->integer || (backEnd.refdef.rdflags & RDF_NOWORLDMODEL) )
{ // fastsky: clear color
// try clearing first with the portal sky fog color, then the world fog color, then finally a default
clearBits |= GL_COLOR_BUFFER_BIT;
if (tr.world && tr.world->globalFog != -1)
{
const fog_t *fog = &tr.world->fogs[tr.world->globalFog];
qglClearColor(fog->parms.color[0], fog->parms.color[1], fog->parms.color[2], 1.0f );
}
else
{
qglClearColor ( 0.3f, 0.3f, 0.3f, 1.0 );
}
}
}
}
else
{
if ( r_fastsky->integer && !( backEnd.refdef.rdflags & RDF_NOWORLDMODEL ) && !g_bRenderGlowingObjects )
{
if (tr.world && tr.world->globalFog != -1)
{
const fog_t *fog = &tr.world->fogs[tr.world->globalFog];
qglClearColor(fog->parms.color[0], fog->parms.color[1], fog->parms.color[2], 1.0f );
}
else
{
qglClearColor( 0.3f, 0.3f, 0.3f, 1 ); // FIXME: get color of sky
}
clearBits |= GL_COLOR_BUFFER_BIT; // FIXME: only if sky shaders have been used
}
}
if ( !( backEnd.refdef.rdflags & RDF_NOWORLDMODEL ) && ( r_DynamicGlow->integer && !g_bRenderGlowingObjects ) )
{
if (tr.world && tr.world->globalFog != -1)
{ //this is because of a bug in multiple scenes I think, it needs to clear for the second scene but it doesn't normally.
const fog_t *fog = &tr.world->fogs[tr.world->globalFog];
qglClearColor(fog->parms.color[0], fog->parms.color[1], fog->parms.color[2], 1.0f );
clearBits |= GL_COLOR_BUFFER_BIT;
}
}
// If this pass is to just render the glowing objects, don't clear the depth buffer since
// we're sharing it with the main scene (since the main scene has already been rendered). -AReis
if ( g_bRenderGlowingObjects )
{
clearBits &= ~GL_DEPTH_BUFFER_BIT;
}
if (clearBits)
{
qglClear( clearBits );
}
if ( ( backEnd.refdef.rdflags & RDF_HYPERSPACE ) )
{
RB_Hyperspace();
return;
}
else
{
backEnd.isHyperspace = qfalse;
}
glState.faceCulling = -1; // force face culling to set next time
// we will only draw a sun if there was sky rendered in this view
backEnd.skyRenderedThisView = qfalse;
// clip to the plane of the portal
if ( backEnd.viewParms.isPortal ) {
float plane[4];
double plane2[4];
plane[0] = backEnd.viewParms.portalPlane.normal[0];
plane[1] = backEnd.viewParms.portalPlane.normal[1];
plane[2] = backEnd.viewParms.portalPlane.normal[2];
plane[3] = backEnd.viewParms.portalPlane.dist;
plane2[0] = DotProduct (backEnd.viewParms.ori.axis[0], plane);
plane2[1] = DotProduct (backEnd.viewParms.ori.axis[1], plane);
plane2[2] = DotProduct (backEnd.viewParms.ori.axis[2], plane);
plane2[3] = DotProduct (plane, backEnd.viewParms.ori.origin) - plane[3];
qglLoadMatrixf( s_flipMatrix );
qglClipPlane (GL_CLIP_PLANE0, plane2);
qglEnable (GL_CLIP_PLANE0);
} else {
qglDisable (GL_CLIP_PLANE0);
}
}
//used by RF_DISTORTION
static inline bool R_WorldCoordToScreenCoordFloat(vec3_t worldCoord, float *x, float *y)
{
int xcenter, ycenter;
vec3_t local, transformed;
vec3_t vfwd;
vec3_t vright;
vec3_t vup;
float xzi;
float yzi;
xcenter = glConfig.vidWidth / 2;
ycenter = glConfig.vidHeight / 2;
//AngleVectors (tr.refdef.viewangles, vfwd, vright, vup);
VectorCopy(tr.refdef.viewaxis[0], vfwd);
VectorCopy(tr.refdef.viewaxis[1], vright);
VectorCopy(tr.refdef.viewaxis[2], vup);
VectorSubtract (worldCoord, tr.refdef.vieworg, local);
transformed[0] = DotProduct(local,vright);
transformed[1] = DotProduct(local,vup);
transformed[2] = DotProduct(local,vfwd);
// Make sure Z is not negative.
if(transformed[2] < 0.01)
{
return false;
}
xzi = xcenter / transformed[2] * (90.0/tr.refdef.fov_x);
yzi = ycenter / transformed[2] * (90.0/tr.refdef.fov_y);
*x = xcenter + xzi * transformed[0];
*y = ycenter - yzi * transformed[1];
return true;
}
//used by RF_DISTORTION
static inline bool R_WorldCoordToScreenCoord( vec3_t worldCoord, int *x, int *y )
{
float xF, yF;
bool retVal = R_WorldCoordToScreenCoordFloat( worldCoord, &xF, &yF );
*x = (int)xF;
*y = (int)yF;
return retVal;
}
/*
==================
RB_RenderDrawSurfList
==================
*/
//number of possible surfs we can postrender.
//note that postrenders lack much of the optimization that the standard sort-render crap does,
//so it's slower.
#define MAX_POST_RENDERS 128
typedef struct
{
int fogNum;
int entNum;
int dlighted;
int depthRange;
drawSurf_t *drawSurf;
shader_t *shader;
} postRender_t;
static postRender_t g_postRenders[MAX_POST_RENDERS];
static int g_numPostRenders = 0;
void RB_RenderDrawSurfList( drawSurf_t *drawSurfs, int numDrawSurfs ) {
shader_t *shader, *oldShader;
int fogNum, oldFogNum;
int entityNum, oldEntityNum;
int dlighted, oldDlighted;
int depthRange, oldDepthRange;
int i;
drawSurf_t *drawSurf;
unsigned int oldSort;
float originalTime;
trRefEntity_t *curEnt;
postRender_t *pRender;
bool didShadowPass = false;
if (g_bRenderGlowingObjects)
{ //only shadow on initial passes
didShadowPass = true;
}
// save original time for entity shader offsets
originalTime = backEnd.refdef.floatTime;
// clear the z buffer, set the modelview, etc
RB_BeginDrawingView ();
// draw everything
oldEntityNum = -1;
backEnd.currentEntity = &tr.worldEntity;
oldShader = NULL;
oldFogNum = -1;
oldDepthRange = qfalse;
oldDlighted = qfalse;
oldSort = (unsigned int) -1;
depthRange = qfalse;
backEnd.pc.c_surfaces += numDrawSurfs;
for (i = 0, drawSurf = drawSurfs ; i < numDrawSurfs ; i++, drawSurf++) {
if ( drawSurf->sort == oldSort ) {
// fast path, same as previous sort
rb_surfaceTable[ *drawSurf->surface ]( drawSurf->surface );
continue;
}
R_DecomposeSort( drawSurf->sort, &entityNum, &shader, &fogNum, &dlighted );
// If we're rendering glowing objects, but this shader has no stages with glow, skip it!
if ( g_bRenderGlowingObjects && !shader->hasGlow )
{
shader = oldShader;
entityNum = oldEntityNum;
fogNum = oldFogNum;
dlighted = oldDlighted;
continue;
}
oldSort = drawSurf->sort;
//
// change the tess parameters if needed
// a "entityMergable" shader is a shader that can have surfaces from seperate
// entities merged into a single batch, like smoke and blood puff sprites
if (entityNum != REFENTITYNUM_WORLD &&
g_numPostRenders < MAX_POST_RENDERS)
{
if ( (backEnd.refdef.entities[entityNum].e.renderfx & RF_DISTORTION) ||
(backEnd.refdef.entities[entityNum].e.renderfx & RF_FORCE_ENT_ALPHA))
{ //must render last
curEnt = &backEnd.refdef.entities[entityNum];
pRender = &g_postRenders[g_numPostRenders];
g_numPostRenders++;
depthRange = 0;
//figure this stuff out now and store it
if ( curEnt->e.renderfx & RF_NODEPTH )
{
depthRange = 2;
}
else if ( curEnt->e.renderfx & RF_DEPTHHACK )
{
depthRange = 1;
}
pRender->depthRange = depthRange;
//It is not necessary to update the old* values because
//we are not updating now with the current values.
depthRange = oldDepthRange;
//store off the ent num
pRender->entNum = entityNum;
//remember the other values necessary for rendering this surf
pRender->drawSurf = drawSurf;
pRender->dlighted = dlighted;
pRender->fogNum = fogNum;
pRender->shader = shader;
//assure the info is back to the last set state
shader = oldShader;
entityNum = oldEntityNum;
fogNum = oldFogNum;
dlighted = oldDlighted;
oldSort = (unsigned int)-1; //invalidate this thing, cause we may want to postrender more surfs of the same sort
//continue without bothering to begin a draw surf
continue;
}
}
if (shader != oldShader || fogNum != oldFogNum || dlighted != oldDlighted
|| ( entityNum != oldEntityNum && !shader->entityMergable ) )
{
if (oldShader != NULL) {
RB_EndSurface();
if (!didShadowPass && shader && shader->sort > SS_BANNER)
{
RB_ShadowFinish();
didShadowPass = true;
}
}
RB_BeginSurface( shader, fogNum );
oldShader = shader;
oldFogNum = fogNum;
oldDlighted = dlighted;
}
//
// change the modelview matrix if needed
//
if ( entityNum != oldEntityNum ) {
depthRange = qfalse;
if ( entityNum != REFENTITYNUM_WORLD ) {
backEnd.currentEntity = &backEnd.refdef.entities[entityNum];
backEnd.refdef.floatTime = originalTime - backEnd.currentEntity->e.shaderTime;
// set up the transformation matrix
R_RotateForEntity( backEnd.currentEntity, &backEnd.viewParms, &backEnd.ori );
// set up the dynamic lighting if needed
if ( backEnd.currentEntity->needDlights ) {
R_TransformDlights( backEnd.refdef.num_dlights, backEnd.refdef.dlights, &backEnd.ori );
}
if ( backEnd.currentEntity->e.renderfx & RF_NODEPTH ) {
// No depth at all, very rare but some things for seeing through walls
depthRange = 2;
}
else if ( backEnd.currentEntity->e.renderfx & RF_DEPTHHACK ) {
// hack the depth range to prevent view model from poking into walls
depthRange = qtrue;
}
} else {
backEnd.currentEntity = &tr.worldEntity;
backEnd.refdef.floatTime = originalTime;
backEnd.ori = backEnd.viewParms.world;
R_TransformDlights( backEnd.refdef.num_dlights, backEnd.refdef.dlights, &backEnd.ori );
}
qglLoadMatrixf( backEnd.ori.modelMatrix );
//
// change depthrange if needed
//
if ( oldDepthRange != depthRange ) {
switch ( depthRange ) {
default:
case 0:
qglDepthRange (0, 1);
break;
case 1:
qglDepthRange (0, .3);
break;
case 2:
qglDepthRange (0, 0);
break;
}
oldDepthRange = depthRange;
}
oldEntityNum = entityNum;
}
// add the triangles for this surface
rb_surfaceTable[ *drawSurf->surface ]( drawSurf->surface );
}
// draw the contents of the last shader batch
if (oldShader != NULL) {
RB_EndSurface();
}
if (tr_stencilled && tr_distortionPrePost)
{ //ok, cap it now
RB_CaptureScreenImage();
RB_DistortionFill();
}
//render distortion surfs (or anything else that needs to be post-rendered)
if (g_numPostRenders > 0)
{
int lastPostEnt = -1;
while (g_numPostRenders > 0)
{
g_numPostRenders--;
pRender = &g_postRenders[g_numPostRenders];
RB_BeginSurface( pRender->shader, pRender->fogNum );
backEnd.currentEntity = &backEnd.refdef.entities[pRender->entNum];
backEnd.refdef.floatTime = originalTime - backEnd.currentEntity->e.shaderTime;
// set up the transformation matrix
R_RotateForEntity( backEnd.currentEntity, &backEnd.viewParms, &backEnd.ori );
// set up the dynamic lighting if needed
if ( backEnd.currentEntity->needDlights )
{
R_TransformDlights( backEnd.refdef.num_dlights, backEnd.refdef.dlights, &backEnd.ori );
}
qglLoadMatrixf( backEnd.ori.modelMatrix );
depthRange = pRender->depthRange;
switch ( depthRange )
{
default:
case 0:
qglDepthRange (0, 1);
break;
case 1:
qglDepthRange (0, .3);
break;
case 2:
qglDepthRange (0, 0);
break;
}
if ((backEnd.currentEntity->e.renderfx & RF_DISTORTION) &&
lastPostEnt != pRender->entNum)
{ //do the capture now, we only need to do it once per ent
int x, y;
int rad = backEnd.currentEntity->e.radius;
//We are going to just bind this, and then the CopyTexImage is going to
//stomp over this texture num in texture memory.
GL_Bind( tr.screenImage );
if (R_WorldCoordToScreenCoord( backEnd.currentEntity->e.origin, &x, &y ))
{
int cX, cY;
cX = glConfig.vidWidth-x-(rad/2);
cY = glConfig.vidHeight-y-(rad/2);
if (cX+rad > glConfig.vidWidth)
{ //would it go off screen?
cX = glConfig.vidWidth-rad;
}
else if (cX < 0)
{ //cap it off at 0
cX = 0;
}
if (cY+rad > glConfig.vidHeight)
{ //would it go off screen?
cY = glConfig.vidHeight-rad;
}
else if (cY < 0)
{ //cap it off at 0
cY = 0;
}
//now copy a portion of the screen to this texture
qglCopyTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA16, cX, cY, rad, rad, 0);
lastPostEnt = pRender->entNum;
}
}
rb_surfaceTable[ *pRender->drawSurf->surface ]( pRender->drawSurf->surface );
RB_EndSurface();
}
}
// go back to the world modelview matrix
qglLoadMatrixf( backEnd.viewParms.world.modelMatrix );
if ( depthRange ) {
qglDepthRange (0, 1);
}
#if 0
RB_DrawSun();
#endif
if (tr_stencilled && !tr_distortionPrePost)
{ //draw in the stencil buffer's cutout
RB_DistortionFill();
}
if (!didShadowPass)
{
// darken down any stencil shadows
RB_ShadowFinish();
didShadowPass = true;
}
// add light flares on lights that aren't obscured
// RB_RenderFlares();
}
/*
============================================================================
RENDER BACK END FUNCTIONS
============================================================================
*/
/*
================
RB_SetGL2D
================
*/
void RB_SetGL2D (void) {
backEnd.projection2D = qtrue;
// set 2D virtual screen size
qglViewport( 0, 0, glConfig.vidWidth, glConfig.vidHeight );
qglScissor( 0, 0, glConfig.vidWidth, glConfig.vidHeight );
qglMatrixMode(GL_PROJECTION);
qglLoadIdentity ();
qglOrtho (0, 640, 480, 0, 0, 1);
qglMatrixMode(GL_MODELVIEW);
qglLoadIdentity ();
GL_State( GLS_DEPTHTEST_DISABLE |
GLS_SRCBLEND_SRC_ALPHA |
GLS_DSTBLEND_ONE_MINUS_SRC_ALPHA );
qglDisable( GL_CULL_FACE );
qglDisable( GL_CLIP_PLANE0 );
// set time for 2D shaders
backEnd.refdef.time = ri.Milliseconds();
backEnd.refdef.floatTime = backEnd.refdef.time * 0.001f;
}
/*
=============
RB_SetColor
=============
*/
const void *RB_SetColor( const void *data ) {
const setColorCommand_t *cmd;
cmd = (const setColorCommand_t *)data;
backEnd.color2D[0] = cmd->color[0] * 255;
backEnd.color2D[1] = cmd->color[1] * 255;
backEnd.color2D[2] = cmd->color[2] * 255;
backEnd.color2D[3] = cmd->color[3] * 255;
return (const void *)(cmd + 1);
}
/*
=============
RB_StretchPic
=============
*/
const void *RB_StretchPic ( const void *data ) {
const stretchPicCommand_t *cmd;
shader_t *shader;
int numVerts, numIndexes;
cmd = (const stretchPicCommand_t *)data;
if ( !backEnd.projection2D ) {
RB_SetGL2D();
}
shader = cmd->shader;
if ( shader != tess.shader ) {
if ( tess.numIndexes ) {
RB_EndSurface();
}
backEnd.currentEntity = &backEnd.entity2D;
RB_BeginSurface( shader, 0 );
}
RB_CHECKOVERFLOW( 4, 6 );
numVerts = tess.numVertexes;
numIndexes = tess.numIndexes;
tess.numVertexes += 4;
tess.numIndexes += 6;
tess.indexes[ numIndexes ] = numVerts + 3;
tess.indexes[ numIndexes + 1 ] = numVerts + 0;
tess.indexes[ numIndexes + 2 ] = numVerts + 2;
tess.indexes[ numIndexes + 3 ] = numVerts + 2;
tess.indexes[ numIndexes + 4 ] = numVerts + 0;
tess.indexes[ numIndexes + 5 ] = numVerts + 1;
byteAlias_t *baDest = NULL, *baSource = (byteAlias_t *)&backEnd.color2D;
baDest = (byteAlias_t *)&tess.vertexColors[numVerts + 0]; baDest->ui = baSource->ui;
baDest = (byteAlias_t *)&tess.vertexColors[numVerts + 1]; baDest->ui = baSource->ui;
baDest = (byteAlias_t *)&tess.vertexColors[numVerts + 2]; baDest->ui = baSource->ui;
baDest = (byteAlias_t *)&tess.vertexColors[numVerts + 3]; baDest->ui = baSource->ui;
tess.xyz[ numVerts ][0] = cmd->x;
tess.xyz[ numVerts ][1] = cmd->y;
tess.xyz[ numVerts ][2] = 0;
tess.texCoords[ numVerts ][0][0] = cmd->s1;
tess.texCoords[ numVerts ][0][1] = cmd->t1;
tess.xyz[ numVerts + 1 ][0] = cmd->x + cmd->w;
tess.xyz[ numVerts + 1 ][1] = cmd->y;
tess.xyz[ numVerts + 1 ][2] = 0;
tess.texCoords[ numVerts + 1 ][0][0] = cmd->s2;
tess.texCoords[ numVerts + 1 ][0][1] = cmd->t1;
tess.xyz[ numVerts + 2 ][0] = cmd->x + cmd->w;
tess.xyz[ numVerts + 2 ][1] = cmd->y + cmd->h;
tess.xyz[ numVerts + 2 ][2] = 0;
tess.texCoords[ numVerts + 2 ][0][0] = cmd->s2;
tess.texCoords[ numVerts + 2 ][0][1] = cmd->t2;
tess.xyz[ numVerts + 3 ][0] = cmd->x;
tess.xyz[ numVerts + 3 ][1] = cmd->y + cmd->h;
tess.xyz[ numVerts + 3 ][2] = 0;
tess.texCoords[ numVerts + 3 ][0][0] = cmd->s1;
tess.texCoords[ numVerts + 3 ][0][1] = cmd->t2;
return (const void *)(cmd + 1);
}
/*
=============
RB_RotatePic
=============
*/
const void *RB_RotatePic ( const void *data )
{
const rotatePicCommand_t *cmd;
shader_t *shader;
cmd = (const rotatePicCommand_t *)data;
shader = cmd->shader;
if ( !backEnd.projection2D ) {
RB_SetGL2D();
}
shader = cmd->shader;
if ( shader != tess.shader ) {
if ( tess.numIndexes ) {
RB_EndSurface();
}
backEnd.currentEntity = &backEnd.entity2D;
RB_BeginSurface( shader, 0 );
}
RB_CHECKOVERFLOW( 4, 6 );
int numVerts = tess.numVertexes;
int numIndexes = tess.numIndexes;
float angle = DEG2RAD( cmd-> a );
float s = sinf( angle );
float c = cosf( angle );
matrix3_t m = {
{ c, s, 0.0f },
{ -s, c, 0.0f },
{ cmd->x + cmd->w, cmd->y, 1.0f }
};
tess.numVertexes += 4;
tess.numIndexes += 6;
tess.indexes[ numIndexes ] = numVerts + 3;
tess.indexes[ numIndexes + 1 ] = numVerts + 0;
tess.indexes[ numIndexes + 2 ] = numVerts + 2;
tess.indexes[ numIndexes + 3 ] = numVerts + 2;
tess.indexes[ numIndexes + 4 ] = numVerts + 0;
tess.indexes[ numIndexes + 5 ] = numVerts + 1;
byteAlias_t *baDest = NULL, *baSource = (byteAlias_t *)&backEnd.color2D;
baDest = (byteAlias_t *)&tess.vertexColors[numVerts + 0]; baDest->ui = baSource->ui;
baDest = (byteAlias_t *)&tess.vertexColors[numVerts + 1]; baDest->ui = baSource->ui;
baDest = (byteAlias_t *)&tess.vertexColors[numVerts + 2]; baDest->ui = baSource->ui;
baDest = (byteAlias_t *)&tess.vertexColors[numVerts + 3]; baDest->ui = baSource->ui;
tess.xyz[ numVerts ][0] = m[0][0] * (-cmd->w) + m[2][0];
tess.xyz[ numVerts ][1] = m[0][1] * (-cmd->w) + m[2][1];
tess.xyz[ numVerts ][2] = 0;
tess.texCoords[ numVerts ][0][0] = cmd->s1;
tess.texCoords[ numVerts ][0][1] = cmd->t1;
tess.xyz[ numVerts + 1 ][0] = m[2][0];
tess.xyz[ numVerts + 1 ][1] = m[2][1];
tess.xyz[ numVerts + 1 ][2] = 0;
tess.texCoords[ numVerts + 1 ][0][0] = cmd->s2;
tess.texCoords[ numVerts + 1 ][0][1] = cmd->t1;
tess.xyz[ numVerts + 2 ][0] = m[1][0] * (cmd->h) + m[2][0];
tess.xyz[ numVerts + 2 ][1] = m[1][1] * (cmd->h) + m[2][1];
tess.xyz[ numVerts + 2 ][2] = 0;
tess.texCoords[ numVerts + 2 ][0][0] = cmd->s2;
tess.texCoords[ numVerts + 2 ][0][1] = cmd->t2;
tess.xyz[ numVerts + 3 ][0] = m[0][0] * (-cmd->w) + m[1][0] * (cmd->h) + m[2][0];
tess.xyz[ numVerts + 3 ][1] = m[0][1] * (-cmd->w) + m[1][1] * (cmd->h) + m[2][1];
tess.xyz[ numVerts + 3 ][2] = 0;
tess.texCoords[ numVerts + 3 ][0][0] = cmd->s1;
tess.texCoords[ numVerts + 3 ][0][1] = cmd->t2;
return (const void *)(cmd + 1);
}
/*
=============
RB_RotatePic2
=============
*/
const void *RB_RotatePic2 ( const void *data )
{
const rotatePicCommand_t *cmd;
shader_t *shader;
cmd = (const rotatePicCommand_t *)data;
shader = cmd->shader;
// FIXME is this needed
if ( shader->numUnfoggedPasses )
{
if ( !backEnd.projection2D ) {
RB_SetGL2D();
}
shader = cmd->shader;
if ( shader != tess.shader ) {
if ( tess.numIndexes ) {
RB_EndSurface();
}
backEnd.currentEntity = &backEnd.entity2D;
RB_BeginSurface( shader, 0 );
}
RB_CHECKOVERFLOW( 4, 6 );
int numVerts = tess.numVertexes;
int numIndexes = tess.numIndexes;
float angle = DEG2RAD( cmd-> a );
float s = sinf( angle );
float c = cosf( angle );
matrix3_t m = {
{ c, s, 0.0f },
{ -s, c, 0.0f },
{ cmd->x, cmd->y, 1.0f }
};
tess.numVertexes += 4;
tess.numIndexes += 6;
tess.indexes[ numIndexes ] = numVerts + 3;
tess.indexes[ numIndexes + 1 ] = numVerts + 0;
tess.indexes[ numIndexes + 2 ] = numVerts + 2;
tess.indexes[ numIndexes + 3 ] = numVerts + 2;
tess.indexes[ numIndexes + 4 ] = numVerts + 0;
tess.indexes[ numIndexes + 5 ] = numVerts + 1;
byteAlias_t *baDest = NULL, *baSource = (byteAlias_t *)&backEnd.color2D;
baDest = (byteAlias_t *)&tess.vertexColors[numVerts + 0]; baDest->ui = baSource->ui;
baDest = (byteAlias_t *)&tess.vertexColors[numVerts + 1]; baDest->ui = baSource->ui;
baDest = (byteAlias_t *)&tess.vertexColors[numVerts + 2]; baDest->ui = baSource->ui;
baDest = (byteAlias_t *)&tess.vertexColors[numVerts + 3]; baDest->ui = baSource->ui;
tess.xyz[ numVerts ][0] = m[0][0] * (-cmd->w * 0.5f) + m[1][0] * (-cmd->h * 0.5f) + m[2][0];
tess.xyz[ numVerts ][1] = m[0][1] * (-cmd->w * 0.5f) + m[1][1] * (-cmd->h * 0.5f) + m[2][1];
tess.xyz[ numVerts ][2] = 0;
tess.texCoords[ numVerts ][0][0] = cmd->s1;
tess.texCoords[ numVerts ][0][1] = cmd->t1;
tess.xyz[ numVerts + 1 ][0] = m[0][0] * (cmd->w * 0.5f) + m[1][0] * (-cmd->h * 0.5f) + m[2][0];
tess.xyz[ numVerts + 1 ][1] = m[0][1] * (cmd->w * 0.5f) + m[1][1] * (-cmd->h * 0.5f) + m[2][1];
tess.xyz[ numVerts + 1 ][2] = 0;
tess.texCoords[ numVerts + 1 ][0][0] = cmd->s2;
tess.texCoords[ numVerts + 1 ][0][1] = cmd->t1;
tess.xyz[ numVerts + 2 ][0] = m[0][0] * (cmd->w * 0.5f) + m[1][0] * (cmd->h * 0.5f) + m[2][0];
tess.xyz[ numVerts + 2 ][1] = m[0][1] * (cmd->w * 0.5f) + m[1][1] * (cmd->h * 0.5f) + m[2][1];
tess.xyz[ numVerts + 2 ][2] = 0;
tess.texCoords[ numVerts + 2 ][0][0] = cmd->s2;
tess.texCoords[ numVerts + 2 ][0][1] = cmd->t2;
tess.xyz[ numVerts + 3 ][0] = m[0][0] * (-cmd->w * 0.5f) + m[1][0] * (cmd->h * 0.5f) + m[2][0];
tess.xyz[ numVerts + 3 ][1] = m[0][1] * (-cmd->w * 0.5f) + m[1][1] * (cmd->h * 0.5f) + m[2][1];
tess.xyz[ numVerts + 3 ][2] = 0;
tess.texCoords[ numVerts + 3 ][0][0] = cmd->s1;
tess.texCoords[ numVerts + 3 ][0][1] = cmd->t2;
}
return (const void *)(cmd + 1);
}
/*
=============
RB_ScissorPic
=============
*/
const void *RB_Scissor ( const void *data )
{
const scissorCommand_t *cmd;
cmd = (const scissorCommand_t *)data;
if ( !backEnd.projection2D )
{
RB_SetGL2D();
}
if (cmd->x >= 0)
{
qglScissor( cmd->x,(glConfig.vidHeight - cmd->y - cmd->h),cmd->w,cmd->h);
}
else
{
qglScissor( 0, 0, glConfig.vidWidth, glConfig.vidHeight);
}
return (const void *)(cmd + 1);
}
/*
=============
RB_DrawSurfs
=============
*/
const void *RB_DrawSurfs( const void *data ) {
const drawSurfsCommand_t *cmd;
// finish any 2D drawing if needed
if ( tess.numIndexes ) {
RB_EndSurface();
}
cmd = (const drawSurfsCommand_t *)data;
backEnd.refdef = cmd->refdef;
backEnd.viewParms = cmd->viewParms;
RB_RenderDrawSurfList( cmd->drawSurfs, cmd->numDrawSurfs );
// Dynamic Glow/Flares:
/*
The basic idea is to render the glowing parts of the scene to an offscreen buffer, then take
that buffer and blur it. After it is sufficiently blurred, re-apply that image back to
the normal screen using a additive blending. To blur the scene I use a vertex program to supply
four texture coordinate offsets that allow 'peeking' into adjacent pixels. In the register
combiner (pixel shader), I combine the adjacent pixels using a weighting factor. - Aurelio
*/
// Render dynamic glowing/flaring objects.
if ( !(backEnd.refdef.rdflags & RDF_NOWORLDMODEL) && g_bDynamicGlowSupported && r_DynamicGlow->integer )
{
// Copy the normal scene to texture.
qglDisable( GL_TEXTURE_2D );
qglEnable( GL_TEXTURE_RECTANGLE_ARB );
qglBindTexture( GL_TEXTURE_RECTANGLE_ARB, tr.sceneImage );
qglCopyTexSubImage2D( GL_TEXTURE_RECTANGLE_ARB, 0, 0, 0, backEnd.viewParms.viewportX, backEnd.viewParms.viewportY, backEnd.viewParms.viewportWidth, backEnd.viewParms.viewportHeight);
qglDisable( GL_TEXTURE_RECTANGLE_ARB );
qglEnable( GL_TEXTURE_2D );
// Just clear colors, but leave the depth buffer intact so we can 'share' it.
qglClearColor( 0.0f, 0.0f, 0.0f, 0.0f );
qglClear( GL_COLOR_BUFFER_BIT );
// Render the glowing objects.
g_bRenderGlowingObjects = true;
RB_RenderDrawSurfList( cmd->drawSurfs, cmd->numDrawSurfs );
g_bRenderGlowingObjects = false;
qglFinish();
// Copy the glow scene to texture.
qglDisable( GL_TEXTURE_2D );
qglEnable( GL_TEXTURE_RECTANGLE_ARB );
qglBindTexture( GL_TEXTURE_RECTANGLE_ARB, tr.screenGlow );
qglCopyTexSubImage2D( GL_TEXTURE_RECTANGLE_ARB, 0, 0, 0, backEnd.viewParms.viewportX, backEnd.viewParms.viewportY, backEnd.viewParms.viewportWidth, backEnd.viewParms.viewportHeight );
qglDisable( GL_TEXTURE_RECTANGLE_ARB );
qglEnable( GL_TEXTURE_2D );
// Resize the viewport to the blur texture size.
const int oldViewWidth = backEnd.viewParms.viewportWidth;
const int oldViewHeight = backEnd.viewParms.viewportHeight;
backEnd.viewParms.viewportWidth = r_DynamicGlowWidth->integer;
backEnd.viewParms.viewportHeight = r_DynamicGlowHeight->integer;
SetViewportAndScissor();
// Blur the scene.
RB_BlurGlowTexture();
// Copy the finished glow scene back to texture.
qglDisable( GL_TEXTURE_2D );
qglEnable( GL_TEXTURE_RECTANGLE_ARB );
qglBindTexture( GL_TEXTURE_RECTANGLE_ARB, tr.blurImage );
qglCopyTexSubImage2D( GL_TEXTURE_RECTANGLE_ARB, 0, 0, 0, 0, 0, backEnd.viewParms.viewportWidth, backEnd.viewParms.viewportHeight );
qglDisable( GL_TEXTURE_RECTANGLE_ARB );
qglEnable( GL_TEXTURE_2D );
// Set the viewport back to normal.
backEnd.viewParms.viewportWidth = oldViewWidth;
backEnd.viewParms.viewportHeight = oldViewHeight;
SetViewportAndScissor();
qglClear( GL_COLOR_BUFFER_BIT );
// Draw the glow additively over the screen.
RB_DrawGlowOverlay();
}
return (const void *)(cmd + 1);
}
/*
=============
RB_DrawBuffer
=============
*/
const void *RB_DrawBuffer( const void *data ) {
const drawBufferCommand_t *cmd;
cmd = (const drawBufferCommand_t *)data;
qglDrawBuffer( cmd->buffer );
// clear screen for debugging
if (!( backEnd.refdef.rdflags & RDF_NOWORLDMODEL ) && tr.world && tr.refdef.rdflags & RDF_doLAGoggles)
{
const fog_t *fog = &tr.world->fogs[tr.world->numfogs];
qglClearColor(fog->parms.color[0], fog->parms.color[1], fog->parms.color[2], 1.0f );
qglClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
}
else if (!( backEnd.refdef.rdflags & RDF_NOWORLDMODEL ) && tr.world && tr.world->globalFog != -1 && tr.sceneCount)//don't clear during menus, wait for real scene
{
const fog_t *fog = &tr.world->fogs[tr.world->globalFog];
qglClearColor(fog->parms.color[0], fog->parms.color[1], fog->parms.color[2], 1.0f );
qglClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
}
else if ( r_clear->integer )
{ // clear screen for debugging
int i = r_clear->integer;
if (i == 42) {
i = Q_irand(0,8);
}
switch (i)
{
default:
qglClearColor( 1, 0, 0.5, 1 );
break;
case 1:
qglClearColor( 1.0, 0.0, 0.0, 1.0); //red
break;
case 2:
qglClearColor( 0.0, 1.0, 0.0, 1.0); //green
break;
case 3:
qglClearColor( 1.0, 1.0, 0.0, 1.0); //yellow
break;
case 4:
qglClearColor( 0.0, 0.0, 1.0, 1.0); //blue
break;
case 5:
qglClearColor( 0.0, 1.0, 1.0, 1.0); //cyan
break;
case 6:
qglClearColor( 1.0, 0.0, 1.0, 1.0); //magenta
break;
case 7:
qglClearColor( 1.0, 1.0, 1.0, 1.0); //white
break;
case 8:
qglClearColor( 0.0, 0.0, 0.0, 1.0); //black
break;
}
qglClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
}
return (const void *)(cmd + 1);
}
/*
===============
RB_ShowImages
Draw all the images to the screen, on top of whatever
was there. This is used to test for texture thrashing.
Also called by RE_EndRegistration
===============
*/
void RB_ShowImages( void ) {
image_t *image;
float x, y, w, h;
//int start, end;
if ( !backEnd.projection2D ) {
RB_SetGL2D();
}
qglFinish();
//start = ri.Milliseconds();
int i=0;
// int iNumImages =
R_Images_StartIteration();
while ( (image = R_Images_GetNextIteration()) != NULL)
{
w = glConfig.vidWidth / 20;
h = glConfig.vidHeight / 15;
x = i % 20 * w;
y = i / 20 * h;
// show in proportional size in mode 2
if ( r_showImages->integer == 2 ) {
w *= image->width / 512.0;
h *= image->height / 512.0;
}
GL_Bind( image );
qglBegin (GL_QUADS);
qglTexCoord2f( 0, 0 );
qglVertex2f( x, y );
qglTexCoord2f( 1, 0 );
qglVertex2f( x + w, y );
qglTexCoord2f( 1, 1 );
qglVertex2f( x + w, y + h );
qglTexCoord2f( 0, 1 );
qglVertex2f( x, y + h );
qglEnd();
i++;
}
qglFinish();
//end = ri.Milliseconds();
//ri.Printf( PRINT_ALL, "%i msec to draw all images\n", end - start );
}
/*
=============
RB_SwapBuffers
=============
*/
extern void RB_RenderWorldEffects( void );
const void *RB_SwapBuffers( const void *data ) {
const swapBuffersCommand_t *cmd;
// finish any 2D drawing if needed
if ( tess.numIndexes ) {
RB_EndSurface();
}
// texture swapping test
if ( r_showImages->integer ) {
RB_ShowImages();
}
cmd = (const swapBuffersCommand_t *)data;
// we measure overdraw by reading back the stencil buffer and
// counting up the number of increments that have happened
if ( r_measureOverdraw->integer ) {
int i;
long sum = 0;
unsigned char *stencilReadback;
stencilReadback = (unsigned char *) R_Malloc( glConfig.vidWidth * glConfig.vidHeight, TAG_TEMP_WORKSPACE, qfalse );
qglReadPixels( 0, 0, glConfig.vidWidth, glConfig.vidHeight, GL_STENCIL_INDEX, GL_UNSIGNED_BYTE, stencilReadback );
for ( i = 0; i < glConfig.vidWidth * glConfig.vidHeight; i++ ) {
sum += stencilReadback[i];
}
backEnd.pc.c_overDraw += sum;
R_Free( stencilReadback );
}
if ( !glState.finishCalled ) {
qglFinish();
}
GLimp_LogComment( "***************** RB_SwapBuffers *****************\n\n\n" );
ri.WIN_Present(&window);
backEnd.projection2D = qfalse;
return (const void *)(cmd + 1);
}
const void *RB_WorldEffects( const void *data )
{
const setModeCommand_t *cmd;
cmd = (const setModeCommand_t *)data;
// Always flush the tess buffer
if ( tess.shader && tess.numIndexes )
{
RB_EndSurface();
}
RB_RenderWorldEffects();
if(tess.shader)
{
RB_BeginSurface( tess.shader, tess.fogNum );
}
return (const void *)(cmd + 1);
}
/*
====================
RB_ExecuteRenderCommands
====================
*/
void RB_ExecuteRenderCommands( const void *data ) {
int t1, t2;
t1 = ri.Milliseconds ();
while ( 1 ) {
data = PADP(data, sizeof(void *));
switch ( *(const int *)data ) {
case RC_SET_COLOR:
data = RB_SetColor( data );
break;
case RC_STRETCH_PIC:
data = RB_StretchPic( data );
break;
case RC_ROTATE_PIC:
data = RB_RotatePic( data );
break;
case RC_ROTATE_PIC2:
data = RB_RotatePic2( data );
break;
case RC_SCISSOR:
data = RB_Scissor( data );
break;
case RC_DRAW_SURFS:
data = RB_DrawSurfs( data );
break;
case RC_DRAW_BUFFER:
data = RB_DrawBuffer( data );
break;
case RC_SWAP_BUFFERS:
data = RB_SwapBuffers( data );
break;
case RC_WORLD_EFFECTS:
data = RB_WorldEffects( data );
break;
case RC_END_OF_LIST:
default:
// stop rendering
t2 = ri.Milliseconds ();
backEnd.pc.msec = t2 - t1;
return;
}
}
}
// What Pixel Shader type is currently active (regcoms or fragment programs).
GLuint g_uiCurrentPixelShaderType = 0x0;
// Begin using a Pixel Shader.
void BeginPixelShader( GLuint uiType, GLuint uiID )
{
switch ( uiType )
{
// Using Register Combiners, so call the Display List that stores it.
case GL_REGISTER_COMBINERS_NV:
{
// Just in case...
if ( !qglCombinerParameterfvNV )
return;
// Call the list with the regcom in it.
qglEnable( GL_REGISTER_COMBINERS_NV );
qglCallList( uiID );
g_uiCurrentPixelShaderType = GL_REGISTER_COMBINERS_NV;
}
return;
// Using Fragment Programs, so call the program.
case GL_FRAGMENT_PROGRAM_ARB:
{
// Just in case...
if ( !qglGenProgramsARB )
return;
qglEnable( GL_FRAGMENT_PROGRAM_ARB );
qglBindProgramARB( GL_FRAGMENT_PROGRAM_ARB, uiID );
g_uiCurrentPixelShaderType = GL_FRAGMENT_PROGRAM_ARB;
}
return;
}
}
// Stop using a Pixel Shader and return states to normal.
void EndPixelShader()
{
if ( g_uiCurrentPixelShaderType == 0x0 )
return;
qglDisable( g_uiCurrentPixelShaderType );
}
// Hack variable for deciding which kind of texture rectangle thing to do (for some
// reason it acts different on radeon! It's against the spec!).
extern bool g_bTextureRectangleHack;
static inline void RB_BlurGlowTexture()
{
qglDisable (GL_CLIP_PLANE0);
GL_Cull( CT_TWO_SIDED );
// Go into orthographic 2d mode.
qglMatrixMode(GL_PROJECTION);
qglPushMatrix();
qglLoadIdentity();
qglOrtho(0, backEnd.viewParms.viewportWidth, backEnd.viewParms.viewportHeight, 0, -1, 1);
qglMatrixMode(GL_MODELVIEW);
qglPushMatrix();
qglLoadIdentity();
GL_State(GLS_DEPTHTEST_DISABLE);
/////////////////////////////////////////////////////////
// Setup vertex and pixel programs.
/////////////////////////////////////////////////////////
// NOTE: The 0.25 is because we're blending 4 textures (so = 1.0) and we want a relatively normalized pixel
// intensity distribution, but this won't happen anyways if intensity is higher than 1.0.
float fBlurDistribution = r_DynamicGlowIntensity->value * 0.25f;
float fBlurWeight[4] = { fBlurDistribution, fBlurDistribution, fBlurDistribution, 1.0f };
// Enable and set the Vertex Program.
qglEnable( GL_VERTEX_PROGRAM_ARB );
qglBindProgramARB( GL_VERTEX_PROGRAM_ARB, tr.glowVShader );
// Apply Pixel Shaders.
if ( qglCombinerParameterfvNV )
{
BeginPixelShader( GL_REGISTER_COMBINERS_NV, tr.glowPShader );
// Pass the blur weight to the regcom.
qglCombinerParameterfvNV( GL_CONSTANT_COLOR0_NV, (float*)&fBlurWeight );
}
else if ( qglProgramEnvParameter4fARB )
{
BeginPixelShader( GL_FRAGMENT_PROGRAM_ARB, tr.glowPShader );
// Pass the blur weight to the Fragment Program.
qglProgramEnvParameter4fARB( GL_FRAGMENT_PROGRAM_ARB, 0, fBlurWeight[0], fBlurWeight[1], fBlurWeight[2], fBlurWeight[3] );
}
/////////////////////////////////////////////////////////
// Set the blur texture to the 4 texture stages.
/////////////////////////////////////////////////////////
// How much to offset each texel by.
float fTexelWidthOffset = 0.1f, fTexelHeightOffset = 0.1f;
GLuint uiTex = tr.screenGlow;
qglActiveTextureARB( GL_TEXTURE3_ARB );
qglEnable( GL_TEXTURE_RECTANGLE_ARB );
qglBindTexture( GL_TEXTURE_RECTANGLE_ARB, uiTex );
qglActiveTextureARB( GL_TEXTURE2_ARB );
qglEnable( GL_TEXTURE_RECTANGLE_ARB );
qglBindTexture( GL_TEXTURE_RECTANGLE_ARB, uiTex );
qglActiveTextureARB( GL_TEXTURE1_ARB );
qglEnable( GL_TEXTURE_RECTANGLE_ARB );
qglBindTexture( GL_TEXTURE_RECTANGLE_ARB, uiTex );
qglActiveTextureARB(GL_TEXTURE0_ARB );
qglDisable( GL_TEXTURE_2D );
qglEnable( GL_TEXTURE_RECTANGLE_ARB );
qglBindTexture( GL_TEXTURE_RECTANGLE_ARB, uiTex );
/////////////////////////////////////////////////////////
// Draw the blur passes (each pass blurs it more, increasing the blur radius ).
/////////////////////////////////////////////////////////
//int iTexWidth = backEnd.viewParms.viewportWidth, iTexHeight = backEnd.viewParms.viewportHeight;
int iTexWidth = glConfig.vidWidth, iTexHeight = glConfig.vidHeight;
for ( int iNumBlurPasses = 0; iNumBlurPasses < r_DynamicGlowPasses->integer; iNumBlurPasses++ )
{
// Load the Texel Offsets into the Vertex Program.
qglProgramEnvParameter4fARB( GL_VERTEX_PROGRAM_ARB, 0, -fTexelWidthOffset, -fTexelWidthOffset, 0.0f, 0.0f );
qglProgramEnvParameter4fARB( GL_VERTEX_PROGRAM_ARB, 1, -fTexelWidthOffset, fTexelWidthOffset, 0.0f, 0.0f );
qglProgramEnvParameter4fARB( GL_VERTEX_PROGRAM_ARB, 2, fTexelWidthOffset, -fTexelWidthOffset, 0.0f, 0.0f );
qglProgramEnvParameter4fARB( GL_VERTEX_PROGRAM_ARB, 3, fTexelWidthOffset, fTexelWidthOffset, 0.0f, 0.0f );
// After first pass put the tex coords to the viewport size.
if ( iNumBlurPasses == 1 )
{
if ( !g_bTextureRectangleHack )
{
iTexWidth = backEnd.viewParms.viewportWidth;
iTexHeight = backEnd.viewParms.viewportHeight;
}
uiTex = tr.blurImage;
qglActiveTextureARB( GL_TEXTURE3_ARB );
qglDisable( GL_TEXTURE_2D );
qglEnable( GL_TEXTURE_RECTANGLE_ARB );
qglBindTexture( GL_TEXTURE_RECTANGLE_ARB, uiTex );
qglActiveTextureARB( GL_TEXTURE2_ARB );
qglDisable( GL_TEXTURE_2D );
qglEnable( GL_TEXTURE_RECTANGLE_ARB );
qglBindTexture( GL_TEXTURE_RECTANGLE_ARB, uiTex );
qglActiveTextureARB( GL_TEXTURE1_ARB );
qglDisable( GL_TEXTURE_2D );
qglEnable( GL_TEXTURE_RECTANGLE_ARB );
qglBindTexture( GL_TEXTURE_RECTANGLE_ARB, uiTex );
qglActiveTextureARB(GL_TEXTURE0_ARB );
qglDisable( GL_TEXTURE_2D );
qglEnable( GL_TEXTURE_RECTANGLE_ARB );
qglBindTexture( GL_TEXTURE_RECTANGLE_ARB, uiTex );
// Copy the current image over.
qglBindTexture( GL_TEXTURE_RECTANGLE_ARB, uiTex );
qglCopyTexSubImage2D( GL_TEXTURE_RECTANGLE_ARB, 0, 0, 0, 0, 0, backEnd.viewParms.viewportWidth, backEnd.viewParms.viewportHeight );
}
// Draw the fullscreen quad.
qglBegin( GL_QUADS );
qglMultiTexCoord2fARB( GL_TEXTURE0_ARB, 0, iTexHeight );
qglVertex2f( 0, 0 );
qglMultiTexCoord2fARB( GL_TEXTURE0_ARB, 0, 0 );
qglVertex2f( 0, backEnd.viewParms.viewportHeight );
qglMultiTexCoord2fARB( GL_TEXTURE0_ARB, iTexWidth, 0 );
qglVertex2f( backEnd.viewParms.viewportWidth, backEnd.viewParms.viewportHeight );
qglMultiTexCoord2fARB( GL_TEXTURE0_ARB, iTexWidth, iTexHeight );
qglVertex2f( backEnd.viewParms.viewportWidth, 0 );
qglEnd();
qglBindTexture( GL_TEXTURE_RECTANGLE_ARB, tr.blurImage );
qglCopyTexSubImage2D( GL_TEXTURE_RECTANGLE_ARB, 0, 0, 0, 0, 0, backEnd.viewParms.viewportWidth, backEnd.viewParms.viewportHeight );
// Increase the texel offsets.
// NOTE: This is possibly the most important input to the effect. Even by using an exponential function I've been able to
// make it look better (at a much higher cost of course). This is cheap though and still looks pretty great. In the future
// I might want to use an actual gaussian equation to correctly calculate the pixel coefficients and attenuates, texel
// offsets, gaussian amplitude and radius...
fTexelWidthOffset += r_DynamicGlowDelta->value;
fTexelHeightOffset += r_DynamicGlowDelta->value;
}
// Disable multi-texturing.
qglActiveTextureARB( GL_TEXTURE3_ARB );
qglDisable( GL_TEXTURE_RECTANGLE_ARB );
qglActiveTextureARB( GL_TEXTURE2_ARB );
qglDisable( GL_TEXTURE_RECTANGLE_ARB );
qglActiveTextureARB( GL_TEXTURE1_ARB );
qglDisable( GL_TEXTURE_RECTANGLE_ARB );
qglActiveTextureARB(GL_TEXTURE0_ARB );
qglDisable( GL_TEXTURE_RECTANGLE_ARB );
qglEnable( GL_TEXTURE_2D );
qglDisable( GL_VERTEX_PROGRAM_ARB );
EndPixelShader();
qglMatrixMode(GL_PROJECTION);
qglPopMatrix();
qglMatrixMode(GL_MODELVIEW);
qglPopMatrix();
qglDisable( GL_BLEND );
glState.currenttmu = 0; //this matches the last one we activated
}
// Draw the glow blur over the screen additively.
static inline void RB_DrawGlowOverlay()
{
qglDisable (GL_CLIP_PLANE0);
GL_Cull( CT_TWO_SIDED );
// Go into orthographic 2d mode.
qglMatrixMode(GL_PROJECTION);
qglPushMatrix();
qglLoadIdentity();
qglOrtho(0, glConfig.vidWidth, glConfig.vidHeight, 0, -1, 1);
qglMatrixMode(GL_MODELVIEW);
qglPushMatrix();
qglLoadIdentity();
GL_State(GLS_DEPTHTEST_DISABLE);
qglDisable( GL_TEXTURE_2D );
qglEnable( GL_TEXTURE_RECTANGLE_ARB );
// For debug purposes.
if ( r_DynamicGlow->integer != 2 )
{
// Render the normal scene texture.
qglBindTexture( GL_TEXTURE_RECTANGLE_ARB, tr.sceneImage );
qglBegin(GL_QUADS);
qglColor4f( 1.0f, 1.0f, 1.0f, 1.0f );
qglTexCoord2f( 0, glConfig.vidHeight );
qglVertex2f( 0, 0 );
qglTexCoord2f( 0, 0 );
qglVertex2f( 0, glConfig.vidHeight );
qglTexCoord2f( glConfig.vidWidth, 0 );
qglVertex2f( glConfig.vidWidth, glConfig.vidHeight );
qglTexCoord2f( glConfig.vidWidth, glConfig.vidHeight );
qglVertex2f( glConfig.vidWidth, 0 );
qglEnd();
}
// One and Inverse Src Color give a very soft addition, while one one is a bit stronger. With one one we can
// use additive blending through multitexture though.
if ( r_DynamicGlowSoft->integer )
{
qglBlendFunc( GL_ONE, GL_ONE_MINUS_SRC_COLOR );
}
else
{
qglBlendFunc( GL_ONE, GL_ONE );
}
qglEnable( GL_BLEND );
// Now additively render the glow texture.
qglBindTexture( GL_TEXTURE_RECTANGLE_ARB, tr.blurImage );
qglBegin(GL_QUADS);
qglColor4f( 1.0f, 1.0f, 1.0f, 1.0f );
qglTexCoord2f( 0, r_DynamicGlowHeight->integer );
qglVertex2f( 0, 0 );
qglTexCoord2f( 0, 0 );
qglVertex2f( 0, glConfig.vidHeight );
qglTexCoord2f( r_DynamicGlowWidth->integer, 0 );
qglVertex2f( glConfig.vidWidth, glConfig.vidHeight );
qglTexCoord2f( r_DynamicGlowWidth->integer, r_DynamicGlowHeight->integer );
qglVertex2f( glConfig.vidWidth, 0 );
qglEnd();
qglDisable( GL_TEXTURE_RECTANGLE_ARB );
qglEnable( GL_TEXTURE_2D );
qglBlendFunc( GL_SRC_COLOR, GL_ONE_MINUS_SRC_COLOR );
qglDisable( GL_BLEND );
qglMatrixMode(GL_PROJECTION);
qglPopMatrix();
qglMatrixMode(GL_MODELVIEW);
qglPopMatrix();
}
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