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

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/*
===========================================================================
Copyright (C) 1999 - 2005, Id Software, Inc.
Copyright (C) 2000 - 2013, Raven Software, Inc.
Copyright (C) 2001 - 2013, Activision, Inc.
Copyright (C) 2005 - 2015, ioquake3 contributors
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/>.
===========================================================================
*/
// tr_shade.c
#include "../server/exe_headers.h"
#include "tr_local.h"
/*
THIS ENTIRE FILE IS BACK END
This file deals with applying shaders to surface data in the tess struct.
*/
shaderCommands_t tess;
static qboolean setArraysOnce;
color4ub_t styleColors[MAX_LIGHT_STYLES];
bool styleUpdated[MAX_LIGHT_STYLES];
extern bool g_bRenderGlowingObjects;
/*
================
R_ArrayElementDiscrete
This is just for OpenGL conformance testing, it should never be the fastest
================
*/
static void APIENTRY R_ArrayElementDiscrete( GLint index ) {
qglColor4ubv( tess.svars.colors[ index ] );
if ( glState.currenttmu ) {
qglMultiTexCoord2fARB( 0, tess.svars.texcoords[ 0 ][ index ][0], tess.svars.texcoords[ 0 ][ index ][1] );
qglMultiTexCoord2fARB( 1, tess.svars.texcoords[ 1 ][ index ][0], tess.svars.texcoords[ 1 ][ index ][1] );
} else {
qglTexCoord2fv( tess.svars.texcoords[ 0 ][ index ] );
}
qglVertex3fv( tess.xyz[ index ] );
}
/*
===================
R_DrawStripElements
===================
*/
static int c_vertexes; // for seeing how long our average strips are
static int c_begins;
static void R_DrawStripElements( int numIndexes, const glIndex_t *indexes, void ( APIENTRY *element )(GLint) ) {
int i;
glIndex_t last[3];
qboolean even;
qglBegin( GL_TRIANGLE_STRIP );
c_begins++;
if ( numIndexes <= 0 ) {
return;
}
// prime the strip
element( indexes[0] );
element( indexes[1] );
element( indexes[2] );
c_vertexes += 3;
last[0] = indexes[0];
last[1] = indexes[1];
last[2] = indexes[2];
even = qfalse;
for ( i = 3; i < numIndexes; i += 3 )
{
// odd numbered triangle in potential strip
if ( !even )
{
// check previous triangle to see if we're continuing a strip
if ( ( indexes[i+0] == last[2] ) && ( indexes[i+1] == last[1] ) )
{
element( indexes[i+2] );
c_vertexes++;
assert( (int)indexes[i+2] < tess.numVertexes );
even = qtrue;
}
// otherwise we're done with this strip so finish it and start
// a new one
else
{
qglEnd();
qglBegin( GL_TRIANGLE_STRIP );
c_begins++;
element( indexes[i+0] );
element( indexes[i+1] );
element( indexes[i+2] );
c_vertexes += 3;
even = qfalse;
}
}
else
{
// check previous triangle to see if we're continuing a strip
if ( ( last[2] == indexes[i+1] ) && ( last[0] == indexes[i+0] ) )
{
element( indexes[i+2] );
c_vertexes++;
even = qfalse;
}
// otherwise we're done with this strip so finish it and start
// a new one
else
{
qglEnd();
qglBegin( GL_TRIANGLE_STRIP );
c_begins++;
element( indexes[i+0] );
element( indexes[i+1] );
element( indexes[i+2] );
c_vertexes += 3;
even = qfalse;
}
}
// cache the last three vertices
last[0] = indexes[i+0];
last[1] = indexes[i+1];
last[2] = indexes[i+2];
}
qglEnd();
}
/*
==================
R_DrawElements
Optionally performs our own glDrawElements that looks for strip conditions
instead of using the single glDrawElements call that may be inefficient
without compiled vertex arrays.
==================
*/
static void R_DrawElements( int numIndexes, const glIndex_t *indexes ) {
int primitives;
primitives = r_primitives->integer;
// default is to use triangles if compiled vertex arrays are present
if ( primitives == 0 ) {
if ( qglLockArraysEXT ) {
primitives = 2;
} else {
primitives = 1;
}
}
if ( primitives == 2 ) {
qglDrawElements( GL_TRIANGLES,
numIndexes,
GL_INDEX_TYPE,
indexes );
return;
}
if ( primitives == 1 ) {
R_DrawStripElements( numIndexes, indexes, qglArrayElement );
return;
}
if ( primitives == 3 ) {
R_DrawStripElements( numIndexes, indexes, R_ArrayElementDiscrete );
return;
}
// anything else will cause no drawing
}
/*
=============================================================
SURFACE SHADERS
=============================================================
*/
/*
=================
R_BindAnimatedImage
=================
*/
void R_BindAnimatedImage( const textureBundle_t *bundle) {
int index;
if ( bundle->isVideoMap ) {
ri.CIN_RunCinematic(bundle->videoMapHandle);
ri.CIN_UploadCinematic(bundle->videoMapHandle);
return;
}
if ((r_fullbright->integer || tr.refdef.doLAGoggles || (tr.refdef.rdflags & RDF_doFullbright) ) && bundle->isLightmap)
{
GL_Bind( tr.whiteImage );
return;
}
if ( bundle->numImageAnimations <= 1 ) {
GL_Bind( bundle->image );
return;
}
if (backEnd.currentEntity->e.renderfx & RF_SETANIMINDEX )
{
index = backEnd.currentEntity->e.skinNum;
}
else
{
// it is necessary to do this messy calc to make sure animations line up
// exactly with waveforms of the same frequency
index = Q_ftol( backEnd.refdef.floatTime * bundle->imageAnimationSpeed * FUNCTABLE_SIZE );
index >>= FUNCTABLE_SIZE2;
if ( index < 0 ) {
index = 0; // may happen with shader time offsets
}
}
if ( bundle->oneShotAnimMap )
{
if ( index >= bundle->numImageAnimations )
{
// stick on last frame
index = bundle->numImageAnimations - 1;
}
}
else
{
// loop
index %= bundle->numImageAnimations;
}
GL_Bind( *((image_t**)bundle->image + index) );
}
/*
================
DrawTris
Draws triangle outlines for debugging
================
*/
static void DrawTris (shaderCommands_t *input)
{
GL_Bind( tr.whiteImage );
if ( r_showtriscolor->integer )
{
int i = r_showtriscolor->integer;
if (i == 42) {
i = Q_irand(0,8);
}
switch (i)
{
case 1:
qglColor3f( 1.0, 0.0, 0.0); //red
break;
case 2:
qglColor3f( 0.0, 1.0, 0.0); //green
break;
case 3:
qglColor3f( 1.0, 1.0, 0.0); //yellow
break;
case 4:
qglColor3f( 0.0, 0.0, 1.0); //blue
break;
case 5:
qglColor3f( 0.0, 1.0, 1.0); //cyan
break;
case 6:
qglColor3f( 1.0, 0.0, 1.0); //magenta
break;
case 7:
qglColor3f( 0.8f, 0.8f, 0.8f); //white/grey
break;
case 8:
qglColor3f( 0.0, 0.0, 0.0); //black
break;
}
}
else
{
qglColor3f( 1.0, 1.0, 1.0); //white
}
if ( r_showtris->integer == 2 )
{
// tries to do non-xray style showtris
GL_State( GLS_POLYMODE_LINE );
qglEnable( GL_POLYGON_OFFSET_LINE );
qglPolygonOffset( -1, -2 );
qglDisableClientState( GL_COLOR_ARRAY );
qglDisableClientState( GL_TEXTURE_COORD_ARRAY );
qglVertexPointer( 3, GL_FLOAT, 16, input->xyz ); // padded for SIMD
if ( qglLockArraysEXT )
{
qglLockArraysEXT( 0, input->numVertexes );
GLimp_LogComment( "glLockArraysEXT\n" );
}
R_DrawElements( input->numIndexes, input->indexes );
if ( qglUnlockArraysEXT )
{
qglUnlockArraysEXT( );
GLimp_LogComment( "glUnlockArraysEXT\n" );
}
qglDisable( GL_POLYGON_OFFSET_LINE );
}
else
{
// same old showtris
GL_State( GLS_POLYMODE_LINE | GLS_DEPTHMASK_TRUE );
qglDepthRange( 0, 0 );
qglDisableClientState (GL_COLOR_ARRAY);
qglDisableClientState (GL_TEXTURE_COORD_ARRAY);
qglVertexPointer (3, GL_FLOAT, 16, input->xyz); // padded for SIMD
if (qglLockArraysEXT) {
qglLockArraysEXT(0, input->numVertexes);
GLimp_LogComment( "glLockArraysEXT\n" );
}
R_DrawElements( input->numIndexes, input->indexes );
if (qglUnlockArraysEXT) {
qglUnlockArraysEXT();
GLimp_LogComment( "glUnlockArraysEXT\n" );
}
qglDepthRange( 0, 1 );
}
}
/*
================
DrawNormals
Draws vertex normals for debugging
================
*/
static void DrawNormals (shaderCommands_t *input) {
int i;
vec3_t temp;
GL_Bind( tr.whiteImage );
qglColor3f (1,1,1);
qglDepthRange( 0, 0 ); // never occluded
GL_State( GLS_POLYMODE_LINE | GLS_DEPTHMASK_TRUE );
qglBegin (GL_LINES);
for (i = 0 ; i < input->numVertexes ; i++) {
qglVertex3fv (input->xyz[i]);
VectorMA (input->xyz[i], 2, input->normal[i], temp);
qglVertex3fv (temp);
}
qglEnd ();
qglDepthRange( 0, 1 );
}
/*
==============
RB_BeginSurface
We must set some things up before beginning any tesselation,
because a surface may be forced to perform a RB_End due
to overflow.
==============
*/
void RB_BeginSurface( shader_t *shader, int fogNum ) {
// shader_t *state = (shader->remappedShader) ? shader->remappedShader : shader;
shader_t *state = shader;
tess.numIndexes = 0;
tess.numVertexes = 0;
tess.shader = state;//shader;
tess.fogNum = fogNum;
tess.dlightBits = 0; // will be OR'd in by surface functions
tess.SSInitializedWind = qfalse; //is this right?
tess.xstages = state->stages;
tess.numPasses = state->numUnfoggedPasses;
tess.currentStageIteratorFunc = shader->sky ? RB_StageIteratorSky : RB_StageIteratorGeneric;
tess.fading = false;
tess.registration++;
}
/*
===================
DrawMultitextured
output = t0 * t1 or t0 + t1
t0 = most upstream according to spec
t1 = most downstream according to spec
===================
*/
static void DrawMultitextured( shaderCommands_t *input, int stage ) {
shaderStage_t *pStage;
pStage = &tess.xstages[stage];
GL_State( pStage->stateBits );
//
// base
//
GL_SelectTexture( 0 );
qglTexCoordPointer( 2, GL_FLOAT, 0, input->svars.texcoords[0] );
R_BindAnimatedImage( &pStage->bundle[0] );
//
// lightmap/secondary pass
//
GL_SelectTexture( 1 );
qglEnable( GL_TEXTURE_2D );
qglEnableClientState( GL_TEXTURE_COORD_ARRAY );
if ( r_lightmap->integer ) {
GL_TexEnv( GL_REPLACE );
} else {
GL_TexEnv( tess.shader->multitextureEnv );
}
qglTexCoordPointer( 2, GL_FLOAT, 0, input->svars.texcoords[1] );
R_BindAnimatedImage( &pStage->bundle[1] );
R_DrawElements( input->numIndexes, input->indexes );
//
// disable texturing on TEXTURE1, then select TEXTURE0
//
qglDisable( GL_TEXTURE_2D );
GL_SelectTexture( 0 );
}
//--EF_old dlight code...reverting back to Quake III dlight to see if people like that better
// Lifted the whole function because someone hacked the heck out of this and it doesn't seem to
// be a case where it's as easy as just changing the blend mode....
/*
===================
ProjectDlightTexture
Perform dynamic lighting with another rendering pass
===================
*/
/*
static void ProjectDlightTexture( void ) {
int l;
vec3_t origin;
float *texCoords;
byte *colors;
byte clipBits[SHADER_MAX_VERTEXES];
float texCoordsArray[SHADER_MAX_VERTEXES][2];
byte colorArray[SHADER_MAX_VERTEXES][4];
unsigned hitIndexes[SHADER_MAX_INDEXES];
if ( !backEnd.refdef.num_dlights ) {
return;
}
for ( l = 0 ; l < backEnd.refdef.num_dlights ; l++ ) {
int numIndexes;
vec3_t floatColor;
float scale;
float radius, chord;
dlight_t *dl;
int i;
if ( !( tess.dlightBits & ( 1 << l ) ) ) {
continue; // this surface definately doesn't have any of this light
}
texCoords = texCoordsArray[0];
colors = colorArray[0];
dl = &backEnd.refdef.dlights[l];
VectorCopy( dl->transformed, origin );
radius = dl->radius;
chord = radius*radius*0.25f;
scale = 1.0f / radius;
floatColor[0] = dl->color[0] * 255f;
floatColor[1] = dl->color[1] * 255f;
floatColor[2] = dl->color[2] * 255f;
for ( i = 0 ; i < tess.numVertexes ; i++, texCoords += 2, colors += 4 ) {
vec3_t distVec;
int clip;
float tempColor;
float modulate, dist;
// if ( 0 ) {
// clipBits[i] = 255; // definately not dlighted
// continue;
// }
//
backEnd.pc.c_dlightVertexes++;
VectorSubtract( origin, tess.xyz[i], distVec );
dist = VectorLengthSquared(distVec);
texCoords[0] = 0.5 + distVec[0] * scale; //xy projection
texCoords[1] = 0.5 + distVec[1] * scale;
clip = 0;
if ( texCoords[0] < 0 ) {
clip |= 1;
} else if ( texCoords[0] > 1 ) {
clip |= 2;
}
if ( texCoords[1] < 0 ) {
clip |= 4;
} else if ( texCoords[1] > 1 ) {
clip |= 8;
}
clipBits[i] = clip;
// modulate the strength based on the height and color
if ( dist > chord) {
clip |= 16;
modulate = 255*1.0ff;
} else {
modulate = 255*2*dist*scale*scale;
}
tempColor = floatColor[0] + modulate;
colors[0] = tempColor > 255 ? 255: Q_ftol(tempColor);
tempColor = floatColor[1] + modulate;
colors[1] = tempColor > 255 ? 255: Q_ftol(tempColor);
tempColor = floatColor[2] + modulate;
colors[2] = tempColor > 255 ? 255: Q_ftol(tempColor);
// colors[3] = 255;
if ( distVec[2] > radius ) {
colors[3] = 0;
} else if ( distVec[2] < -radius ) {
colors[3] = 0;
} else {
if ( distVec[2] < 0 ) {
distVec[2] = -distVec[2];
}
if ( distVec[2] < radius * 0.5 ) {
colors[3] = 255;
} else {
colors[3] = Q_ftol(255* (radius - distVec[2]) * scale);
}
}
}
// build a list of triangles that need light
numIndexes = 0;
for ( i = 0 ; i < tess.numIndexes ; i += 3 ) {
int a, b, c;
a = tess.indexes[i];
b = tess.indexes[i+1];
c = tess.indexes[i+2];
if ( clipBits[a] & clipBits[b] & clipBits[c] ) {
continue; // not lighted
}
hitIndexes[numIndexes] = a;
hitIndexes[numIndexes+1] = b;
hitIndexes[numIndexes+2] = c;
numIndexes += 3;
}
if ( !numIndexes ) {
continue;
}
qglEnableClientState( GL_TEXTURE_COORD_ARRAY );
qglTexCoordPointer( 2, GL_FLOAT, 0, texCoordsArray[0] );
qglEnableClientState( GL_COLOR_ARRAY );
qglColorPointer( 4, GL_UNSIGNED_BYTE, 0, colorArray );
GL_Bind( tr.dlightImage );
// include GLS_DEPTHFUNC_EQUAL so alpha tested surfaces don't add light
// where they aren't rendered
GL_State( GLS_SRCBLEND_SRC_ALPHA | GLS_DSTBLEND_SRC_COLOR | GLS_DEPTHFUNC_EQUAL);//our way
// GL_State( GLS_SRCBLEND_DST_COLOR | GLS_DSTBLEND_ONE | GLS_DEPTHFUNC_EQUAL ); //Id way
R_DrawElements( numIndexes, hitIndexes );
backEnd.pc.c_totalIndexes += numIndexes;
backEnd.pc.c_dlightIndexes += numIndexes;
}
}
*/
// Lifted from Quake III to see if people like this kind of dlight better
/*
===================
ProjectDlightTexture
Perform dynamic lighting with another rendering pass
===================
*/
static void ProjectDlightTexture2( void ) {
int i, l;
vec3_t origin;
byte clipBits[SHADER_MAX_VERTEXES];
float texCoordsArray[SHADER_MAX_VERTEXES][2];
float oldTexCoordsArray[SHADER_MAX_VERTEXES][2];
float vertCoordsArray[SHADER_MAX_VERTEXES][4];
unsigned int colorArray[SHADER_MAX_VERTEXES];
glIndex_t hitIndexes[SHADER_MAX_INDEXES];
int numIndexes;
float radius;
#ifndef JK2_MODE
int fogging;
#endif
shaderStage_t *dStage;
vec3_t posa;
vec3_t posb;
vec3_t posc;
vec3_t dist;
vec3_t e1;
vec3_t e2;
vec3_t normal;
float fac,modulate;
vec3_t floatColor;
byte colorTemp[4];
int needResetVerts=0;
if ( !backEnd.refdef.num_dlights )
{
return;
}
for ( l = 0 ; l < backEnd.refdef.num_dlights ; l++ )
{
dlight_t *dl;
if ( !( tess.dlightBits & ( 1 << l ) ) ) {
continue; // this surface definately doesn't have any of this light
}
dl = &backEnd.refdef.dlights[l];
VectorCopy( dl->transformed, origin );
radius = dl->radius;
int clipall = 63;
for ( i = 0 ; i < tess.numVertexes ; i++)
{
int clip;
VectorSubtract( origin, tess.xyz[i], dist );
clip = 0;
if ( dist[0] < -radius )
{
clip |= 1;
}
else if ( dist[0] > radius )
{
clip |= 2;
}
if ( dist[1] < -radius )
{
clip |= 4;
}
else if ( dist[1] > radius )
{
clip |= 8;
}
if ( dist[2] < -radius )
{
clip |= 16;
}
else if ( dist[2] > radius )
{
clip |= 32;
}
clipBits[i] = clip;
clipall &= clip;
}
if ( clipall )
{
continue; // this surface doesn't have any of this light
}
floatColor[0] = dl->color[0] * 255.0f;
floatColor[1] = dl->color[1] * 255.0f;
floatColor[2] = dl->color[2] * 255.0f;
// build a list of triangles that need light
numIndexes = 0;
for ( i = 0 ; i < tess.numIndexes ; i += 3 )
{
int a, b, c;
a = tess.indexes[i];
b = tess.indexes[i+1];
c = tess.indexes[i+2];
if ( clipBits[a] & clipBits[b] & clipBits[c] )
{
continue; // not lighted
}
// copy the vertex positions
VectorCopy(tess.xyz[a],posa);
VectorCopy(tess.xyz[b],posb);
VectorCopy(tess.xyz[c],posc);
VectorSubtract( posa, posb,e1);
VectorSubtract( posc, posb,e2);
CrossProduct(e1,e2,normal);
// fac=DotProduct(normal,origin)-DotProduct(normal,posa);
// if (fac <= 0.0f || // backface
// rjr - removed for hacking if ( (!r_dlightBacks->integer && DotProduct(normal,origin)-DotProduct(normal,posa) <= 0.0f) || // backface
if ( DotProduct(normal,origin)-DotProduct(normal,posa) <= 0.0f || // backface
DotProduct(normal,normal) < 1E-8f) // junk triangle
{
continue;
}
VectorNormalize(normal);
fac=DotProduct(normal,origin)-DotProduct(normal,posa);
if (fac >= radius) // out of range
{
continue;
}
modulate = 1.0f-((fac*fac) / (radius*radius));
fac = 0.5f/sqrtf(radius*radius - fac*fac);
// save the verts
VectorCopy(posa,vertCoordsArray[numIndexes]);
VectorCopy(posb,vertCoordsArray[numIndexes+1]);
VectorCopy(posc,vertCoordsArray[numIndexes+2]);
// now we need e1 and e2 to be an orthonormal basis
if (DotProduct(e1,e1) > DotProduct(e2,e2))
{
VectorNormalize(e1);
CrossProduct(e1,normal,e2);
}
else
{
VectorNormalize(e2);
CrossProduct(normal,e2,e1);
}
VectorScale(e1,fac,e1);
VectorScale(e2,fac,e2);
VectorSubtract( posa, origin,dist);
texCoordsArray[numIndexes][0]=DotProduct(dist,e1)+0.5f;
texCoordsArray[numIndexes][1]=DotProduct(dist,e2)+0.5f;
VectorSubtract( posb, origin,dist);
texCoordsArray[numIndexes+1][0]=DotProduct(dist,e1)+0.5f;
texCoordsArray[numIndexes+1][1]=DotProduct(dist,e2)+0.5f;
VectorSubtract( posc, origin,dist);
texCoordsArray[numIndexes+2][0]=DotProduct(dist,e1)+0.5f;
texCoordsArray[numIndexes+2][1]=DotProduct(dist,e2)+0.5f;
if ((texCoordsArray[numIndexes][0] < 0.0f && texCoordsArray[numIndexes+1][0] < 0.0f && texCoordsArray[numIndexes+2][0] < 0.0f) ||
(texCoordsArray[numIndexes][0] > 1.0f && texCoordsArray[numIndexes+1][0] > 1.0f && texCoordsArray[numIndexes+2][0] > 1.0f) ||
(texCoordsArray[numIndexes][1] < 0.0f && texCoordsArray[numIndexes+1][1] < 0.0f && texCoordsArray[numIndexes+2][1] < 0.0f) ||
(texCoordsArray[numIndexes][1] > 1.0f && texCoordsArray[numIndexes+1][1] > 1.0f && texCoordsArray[numIndexes+2][1] > 1.0f) )
{
continue; // didn't end up hitting this tri
}
// these are the old texture coordinates for the multitexture dlight
/* old code, get from the svars = wrong
oldTexCoordsArray[numIndexes][0]=tess.svars.texcoords[0][a][0];
oldTexCoordsArray[numIndexes][1]=tess.svars.texcoords[0][a][1];
oldTexCoordsArray[numIndexes+1][0]=tess.svars.texcoords[0][b][0];
oldTexCoordsArray[numIndexes+1][1]=tess.svars.texcoords[0][b][1];
oldTexCoordsArray[numIndexes+2][0]=tess.svars.texcoords[0][c][0];
oldTexCoordsArray[numIndexes+2][1]=tess.svars.texcoords[0][c][1];
*/
oldTexCoordsArray[numIndexes][0]=tess.texCoords[a][0][0];
oldTexCoordsArray[numIndexes][1]=tess.texCoords[a][0][1];
oldTexCoordsArray[numIndexes+1][0]=tess.texCoords[b][0][0];
oldTexCoordsArray[numIndexes+1][1]=tess.texCoords[b][0][1];
oldTexCoordsArray[numIndexes+2][0]=tess.texCoords[c][0][0];
oldTexCoordsArray[numIndexes+2][1]=tess.texCoords[c][0][1];
colorTemp[0] = Q_ftol(floatColor[0] * modulate);
colorTemp[1] = Q_ftol(floatColor[1] * modulate);
colorTemp[2] = Q_ftol(floatColor[2] * modulate);
colorTemp[3] = 255;
byteAlias_t *ba = (byteAlias_t *)&colorTemp;
colorArray[numIndexes + 0] = ba->ui;
colorArray[numIndexes + 1] = ba->ui;
colorArray[numIndexes + 2] = ba->ui;
hitIndexes[numIndexes] = numIndexes;
hitIndexes[numIndexes+1] = numIndexes+1;
hitIndexes[numIndexes+2] = numIndexes+2;
numIndexes += 3;
if (numIndexes>=SHADER_MAX_VERTEXES-3)
{
break; // we are out of space, so we are done :)
}
}
if ( !numIndexes ) {
continue;
}
#ifndef JK2_MODE
//don't have fog enabled when we redraw with alpha test, or it will double over
//and screw the tri up -rww
if (r_drawfog->value == 2 &&
tr.world &&
(tess.fogNum == tr.world->globalFog || tess.fogNum == tr.world->numfogs))
{
fogging = qglIsEnabled(GL_FOG);
if (fogging)
{
qglDisable(GL_FOG);
}
}
else
{
fogging = 0;
}
#endif
if (!needResetVerts)
{
needResetVerts=1;
if (qglUnlockArraysEXT)
{
qglUnlockArraysEXT();
GLimp_LogComment( "glUnlockArraysEXT\n" );
}
}
qglVertexPointer (3, GL_FLOAT, 16, vertCoordsArray); // padded for SIMD
dStage = NULL;
if (tess.shader && qglActiveTextureARB)
{
int i = 0;
while (i < tess.shader->numUnfoggedPasses)
{
const int blendBits = (GLS_SRCBLEND_BITS+GLS_DSTBLEND_BITS);
if (((tess.shader->stages[i].bundle[0].image && !tess.shader->stages[i].bundle[0].isLightmap && !tess.shader->stages[i].bundle[0].numTexMods && tess.shader->stages[i].bundle[0].tcGen != TCGEN_ENVIRONMENT_MAPPED && tess.shader->stages[i].bundle[0].tcGen != TCGEN_FOG) ||
(tess.shader->stages[i].bundle[1].image && !tess.shader->stages[i].bundle[1].isLightmap && !tess.shader->stages[i].bundle[1].numTexMods && tess.shader->stages[i].bundle[1].tcGen != TCGEN_ENVIRONMENT_MAPPED && tess.shader->stages[i].bundle[1].tcGen != TCGEN_FOG)) &&
(tess.shader->stages[i].stateBits & blendBits) == 0 )
{ //only use non-lightmap opaque stages
dStage = &tess.shader->stages[i];
break;
}
i++;
}
}
if (dStage)
{
GL_SelectTexture( 0 );
GL_State(0);
qglTexCoordPointer( 2, GL_FLOAT, 0, oldTexCoordsArray[0] );
if (dStage->bundle[0].image && !dStage->bundle[0].isLightmap && !dStage->bundle[0].numTexMods && dStage->bundle[0].tcGen != TCGEN_ENVIRONMENT_MAPPED && dStage->bundle[0].tcGen != TCGEN_FOG)
{
R_BindAnimatedImage( &dStage->bundle[0] );
}
else
{
R_BindAnimatedImage( &dStage->bundle[1] );
}
GL_SelectTexture( 1 );
qglEnable( GL_TEXTURE_2D );
qglEnableClientState( GL_TEXTURE_COORD_ARRAY );
qglTexCoordPointer( 2, GL_FLOAT, 0, texCoordsArray[0] );
qglEnableClientState( GL_COLOR_ARRAY );
qglColorPointer( 4, GL_UNSIGNED_BYTE, 0, colorArray );
GL_Bind( tr.dlightImage );
GL_TexEnv( GL_MODULATE );
GL_State(GLS_SRCBLEND_ONE | GLS_DSTBLEND_ONE | GLS_DEPTHFUNC_EQUAL);// | GLS_ATEST_GT_0);
R_DrawElements( numIndexes, hitIndexes );
qglDisable( GL_TEXTURE_2D );
GL_SelectTexture(0);
}
else
{
qglEnableClientState( GL_TEXTURE_COORD_ARRAY );
qglTexCoordPointer( 2, GL_FLOAT, 0, texCoordsArray[0] );
qglEnableClientState( GL_COLOR_ARRAY );
qglColorPointer( 4, GL_UNSIGNED_BYTE, 0, colorArray );
GL_Bind( tr.dlightImage );
// include GLS_DEPTHFUNC_EQUAL so alpha tested surfaces don't add light
// where they aren't rendered
//if ( dl->additive ) {
// GL_State( GLS_SRCBLEND_ONE | GLS_DSTBLEND_ONE | GLS_DEPTHFUNC_EQUAL );
//}
//else
{
GL_State( GLS_SRCBLEND_DST_COLOR | GLS_DSTBLEND_ONE | GLS_DEPTHFUNC_EQUAL );
}
R_DrawElements( numIndexes, hitIndexes );
}
#ifndef JK2_MODE
if (fogging)
{
qglEnable(GL_FOG);
}
#endif
backEnd.pc.c_totalIndexes += numIndexes;
backEnd.pc.c_dlightIndexes += numIndexes;
}
if (needResetVerts)
{
qglVertexPointer (3, GL_FLOAT, 16, tess.xyz); // padded for SIMD
if (qglLockArraysEXT)
{
qglLockArraysEXT(0, tess.numVertexes);
GLimp_LogComment( "glLockArraysEXT\n" );
}
}
}
static void ProjectDlightTexture( void ) {
int i, l;
vec3_t origin;
float *texCoords;
byte *colors;
byte clipBits[SHADER_MAX_VERTEXES];
float texCoordsArray[SHADER_MAX_VERTEXES][2];
byte colorArray[SHADER_MAX_VERTEXES][4];
glIndex_t hitIndexes[SHADER_MAX_INDEXES];
int numIndexes;
float scale;
float radius;
#ifndef JK2_MODE
int fogging;
#endif
vec3_t floatColor;
shaderStage_t *dStage;
if ( !backEnd.refdef.num_dlights ) {
return;
}
for ( l = 0 ; l < backEnd.refdef.num_dlights ; l++ ) {
dlight_t *dl;
if ( !( tess.dlightBits & ( 1 << l ) ) ) {
continue; // this surface definately doesn't have any of this light
}
texCoords = texCoordsArray[0];
colors = colorArray[0];
dl = &backEnd.refdef.dlights[l];
VectorCopy( dl->transformed, origin );
radius = dl->radius;
scale = 1.0f / radius;
floatColor[0] = dl->color[0] * 255.0f;
floatColor[1] = dl->color[1] * 255.0f;
floatColor[2] = dl->color[2] * 255.0f;
for ( i = 0 ; i < tess.numVertexes ; i++, texCoords += 2, colors += 4 ) {
vec3_t dist;
int clip;
float modulate;
backEnd.pc.c_dlightVertexes++;
VectorSubtract( origin, tess.xyz[i], dist );
int l = 1;
int bestIndex = 0;
float greatest = tess.normal[i][0];
if (greatest < 0.0f)
{
greatest = -greatest;
}
if (VectorCompare(tess.normal[i], vec3_origin))
{ //damn you terrain!
bestIndex = 2;
}
else
{
while (l < 3)
{
if ((tess.normal[i][l] > greatest && tess.normal[i][l] > 0.0f) ||
(tess.normal[i][l] < -greatest && tess.normal[i][l] < 0.0f))
{
greatest = tess.normal[i][l];
if (greatest < 0.0f)
{
greatest = -greatest;
}
bestIndex = l;
}
l++;
}
}
float dUse = 0.0f;
const float maxScale = 1.5f;
const float maxGroundScale = 1.4f;
const float lightScaleTolerance = 0.1f;
if (bestIndex == 2)
{
dUse = origin[2]-tess.xyz[i][2];
if (dUse < 0.0f)
{
dUse = -dUse;
}
dUse = (radius*0.5f)/dUse;
if (dUse > maxGroundScale)
{
dUse = maxGroundScale;
}
else if (dUse < 0.1f)
{
dUse = 0.1f;
}
if (VectorCompare(tess.normal[i], vec3_origin) ||
tess.normal[i][0] > lightScaleTolerance ||
tess.normal[i][0] < -lightScaleTolerance ||
tess.normal[i][1] > lightScaleTolerance ||
tess.normal[i][1] < -lightScaleTolerance)
{ //if not perfectly flat, we must use a constant dist
scale = 1.0f / radius;
}
else
{
scale = 1.0f / (radius*dUse);
}
texCoords[0] = 0.5f + dist[0] * scale;
texCoords[1] = 0.5f + dist[1] * scale;
}
else if (bestIndex == 1)
{
dUse = origin[1]-tess.xyz[i][1];
if (dUse < 0.0f)
{
dUse = -dUse;
}
dUse = (radius*0.5f)/dUse;
if (dUse > maxScale)
{
dUse = maxScale;
}
else if (dUse < 0.1f)
{
dUse = 0.1f;
}
if (tess.normal[i][0] > lightScaleTolerance ||
tess.normal[i][0] < -lightScaleTolerance ||
tess.normal[i][2] > lightScaleTolerance ||
tess.normal[i][2] < -lightScaleTolerance)
{ //if not perfectly flat, we must use a constant dist
scale = 1.0f / radius;
}
else
{
scale = 1.0f / (radius*dUse);
}
texCoords[0] = 0.5f + dist[0] * scale;
texCoords[1] = 0.5f + dist[2] * scale;
}
else
{
dUse = origin[0]-tess.xyz[i][0];
if (dUse < 0.0f)
{
dUse = -dUse;
}
dUse = (radius*0.5f)/dUse;
if (dUse > maxScale)
{
dUse = maxScale;
}
else if (dUse < 0.1f)
{
dUse = 0.1f;
}
if (tess.normal[i][2] > lightScaleTolerance ||
tess.normal[i][2] < -lightScaleTolerance ||
tess.normal[i][1] > lightScaleTolerance ||
tess.normal[i][1] < -lightScaleTolerance)
{ //if not perfectly flat, we must use a constant dist
scale = 1.0f / radius;
}
else
{
scale = 1.0f / (radius*dUse);
}
texCoords[0] = 0.5f + dist[1] * scale;
texCoords[1] = 0.5f + dist[2] * scale;
}
clip = 0;
if ( texCoords[0] < 0.0f ) {
clip |= 1;
} else if ( texCoords[0] > 1.0f ) {
clip |= 2;
}
if ( texCoords[1] < 0.0f ) {
clip |= 4;
} else if ( texCoords[1] > 1.0f ) {
clip |= 8;
}
// modulate the strength based on the height and color
if ( dist[bestIndex] > radius ) {
clip |= 16;
modulate = 0.0f;
} else if ( dist[bestIndex] < -radius ) {
clip |= 32;
modulate = 0.0f;
} else {
dist[bestIndex] = Q_fabs(dist[bestIndex]);
if ( dist[bestIndex] < radius * 0.5f ) {
modulate = 1.0f;
} else {
modulate = 2.0f * (radius - dist[bestIndex]) * scale;
}
}
clipBits[i] = clip;
colors[0] = Q_ftol(floatColor[0] * modulate);
colors[1] = Q_ftol(floatColor[1] * modulate);
colors[2] = Q_ftol(floatColor[2] * modulate);
colors[3] = 255;
}
// build a list of triangles that need light
numIndexes = 0;
for ( i = 0 ; i < tess.numIndexes ; i += 3 ) {
int a, b, c;
a = tess.indexes[i];
b = tess.indexes[i+1];
c = tess.indexes[i+2];
if ( clipBits[a] & clipBits[b] & clipBits[c] ) {
continue; // not lighted
}
hitIndexes[numIndexes] = a;
hitIndexes[numIndexes+1] = b;
hitIndexes[numIndexes+2] = c;
numIndexes += 3;
}
if ( !numIndexes ) {
continue;
}
#ifndef JK2_MODE
//don't have fog enabled when we redraw with alpha test, or it will double over
//and screw the tri up -rww
if (r_drawfog->value == 2 &&
tr.world &&
(tess.fogNum == tr.world->globalFog || tess.fogNum == tr.world->numfogs))
{
fogging = qglIsEnabled(GL_FOG);
if (fogging)
{
qglDisable(GL_FOG);
}
}
else
{
fogging = 0;
}
#endif
dStage = NULL;
if (tess.shader && qglActiveTextureARB)
{
int i = 0;
while (i < tess.shader->numUnfoggedPasses)
{
const int blendBits = (GLS_SRCBLEND_BITS+GLS_DSTBLEND_BITS);
if (((tess.shader->stages[i].bundle[0].image && !tess.shader->stages[i].bundle[0].isLightmap && !tess.shader->stages[i].bundle[0].numTexMods && tess.shader->stages[i].bundle[0].tcGen != TCGEN_ENVIRONMENT_MAPPED && tess.shader->stages[i].bundle[0].tcGen != TCGEN_FOG) ||
(tess.shader->stages[i].bundle[1].image && !tess.shader->stages[i].bundle[1].isLightmap && !tess.shader->stages[i].bundle[1].numTexMods && tess.shader->stages[i].bundle[1].tcGen != TCGEN_ENVIRONMENT_MAPPED && tess.shader->stages[i].bundle[1].tcGen != TCGEN_FOG)) &&
(tess.shader->stages[i].stateBits & blendBits) == 0 )
{ //only use non-lightmap opaque stages
dStage = &tess.shader->stages[i];
break;
}
i++;
}
}
if (dStage)
{
GL_SelectTexture( 0 );
GL_State(0);
qglTexCoordPointer( 2, GL_FLOAT, 0, tess.svars.texcoords[0] );
if (dStage->bundle[0].image && !dStage->bundle[0].isLightmap && !dStage->bundle[0].numTexMods && dStage->bundle[0].tcGen != TCGEN_ENVIRONMENT_MAPPED && dStage->bundle[0].tcGen != TCGEN_FOG)
{
R_BindAnimatedImage( &dStage->bundle[0] );
}
else
{
R_BindAnimatedImage( &dStage->bundle[1] );
}
GL_SelectTexture( 1 );
qglEnable( GL_TEXTURE_2D );
qglEnableClientState( GL_TEXTURE_COORD_ARRAY );
qglTexCoordPointer( 2, GL_FLOAT, 0, texCoordsArray[0] );
qglEnableClientState( GL_COLOR_ARRAY );
qglColorPointer( 4, GL_UNSIGNED_BYTE, 0, colorArray );
GL_Bind( tr.dlightImage );
GL_TexEnv( GL_MODULATE );
GL_State(GLS_SRCBLEND_ONE | GLS_DSTBLEND_ONE | GLS_DEPTHFUNC_EQUAL);// | GLS_ATEST_GT_0);
R_DrawElements( numIndexes, hitIndexes );
qglDisable( GL_TEXTURE_2D );
GL_SelectTexture(0);
}
else
{
qglEnableClientState( GL_TEXTURE_COORD_ARRAY );
qglTexCoordPointer( 2, GL_FLOAT, 0, texCoordsArray[0] );
qglEnableClientState( GL_COLOR_ARRAY );
qglColorPointer( 4, GL_UNSIGNED_BYTE, 0, colorArray );
GL_Bind( tr.dlightImage );
// include GLS_DEPTHFUNC_EQUAL so alpha tested surfaces don't add light
// where they aren't rendered
//if ( dl->additive ) {
// GL_State( GLS_SRCBLEND_ONE | GLS_DSTBLEND_ONE | GLS_DEPTHFUNC_EQUAL );
//}
//else
{
GL_State( GLS_SRCBLEND_DST_COLOR | GLS_DSTBLEND_ONE | GLS_DEPTHFUNC_EQUAL );
}
R_DrawElements( numIndexes, hitIndexes );
}
#ifndef JK2_MODE
if (fogging)
{
qglEnable(GL_FOG);
}
#endif
backEnd.pc.c_totalIndexes += numIndexes;
backEnd.pc.c_dlightIndexes += numIndexes;
}
}
/*
===================
RB_FogPass
Blends a fog texture on top of everything else
===================
*/
static void RB_FogPass( void ) {
fog_t *fog;
int i;
qglEnableClientState( GL_COLOR_ARRAY );
qglColorPointer( 4, GL_UNSIGNED_BYTE, 0, tess.svars.colors );
qglEnableClientState( GL_TEXTURE_COORD_ARRAY);
qglTexCoordPointer( 2, GL_FLOAT, 0, tess.svars.texcoords[0] );
fog = tr.world->fogs + tess.fogNum;
for ( i = 0; i < tess.numVertexes; i++ ) {
byteAlias_t *ba = (byteAlias_t *)&tess.svars.colors[i];
ba->i = fog->colorInt;
}
RB_CalcFogTexCoords( ( float * ) tess.svars.texcoords[0] );
GL_Bind( tr.fogImage );
if ( tess.shader->fogPass == FP_EQUAL ) {
GL_State( GLS_SRCBLEND_SRC_ALPHA | GLS_DSTBLEND_ONE_MINUS_SRC_ALPHA | GLS_DEPTHFUNC_EQUAL );
} else {
GL_State( GLS_SRCBLEND_SRC_ALPHA | GLS_DSTBLEND_ONE_MINUS_SRC_ALPHA );
}
R_DrawElements( tess.numIndexes, tess.indexes );
}
/*
===============
ComputeColors
===============
*/
static void ComputeColors( shaderStage_t *pStage, alphaGen_t forceAlphaGen, colorGen_t forceRGBGen )
{
int i;
if ( tess.shader != tr.projectionShadowShader && tess.shader != tr.shadowShader &&
( backEnd.currentEntity->e.renderfx & (RF_DISINTEGRATE1|RF_DISINTEGRATE2)))
{
RB_CalcDisintegrateColors( (unsigned char *)tess.svars.colors, pStage->rgbGen );
RB_CalcDisintegrateVertDeform();
// We've done some custom alpha and color stuff, so we can skip the rest. Let it do fog though
forceRGBGen = CGEN_SKIP;
forceAlphaGen = AGEN_SKIP;
}
//
// rgbGen
//
if ( !forceRGBGen )
{
forceRGBGen = pStage->rgbGen;
}
if ( backEnd.currentEntity->e.renderfx & RF_VOLUMETRIC ) // does not work for rotated models, technically, this should also be a CGEN type, but that would entail adding new shader commands....which is too much work for one thing
{
int i;
float *normal, dot;
unsigned char *color;
int numVertexes;
normal = tess.normal[0];
color = tess.svars.colors[0];
numVertexes = tess.numVertexes;
for ( i = 0 ; i < numVertexes ; i++, normal += 4, color += 4)
{
dot = DotProduct( normal, backEnd.refdef.viewaxis[0] );
dot *= dot * dot * dot;
if ( dot < 0.2f ) // so low, so just clamp it
{
dot = 0.0f;
}
color[0] = color[1] = color[2] = color[3] = Q_ftol( backEnd.currentEntity->e.shaderRGBA[0] * (1-dot) );
}
forceRGBGen = CGEN_SKIP;
forceAlphaGen = AGEN_SKIP;
}
if ( !forceAlphaGen ) //set this up so we can override below
{
forceAlphaGen = pStage->alphaGen;
}
switch ( forceRGBGen )
{
case CGEN_SKIP:
break;
case CGEN_IDENTITY:
memset( tess.svars.colors, 0xff, tess.numVertexes * 4 );
break;
default:
case CGEN_IDENTITY_LIGHTING:
memset( tess.svars.colors, tr.identityLightByte, tess.numVertexes * 4 );
break;
case CGEN_LIGHTING_DIFFUSE:
RB_CalcDiffuseColor( ( unsigned char * ) tess.svars.colors );
break;
case CGEN_LIGHTING_DIFFUSE_ENTITY:
RB_CalcDiffuseEntityColor( ( unsigned char * ) tess.svars.colors );
if ( forceAlphaGen == AGEN_IDENTITY &&
backEnd.currentEntity->e.shaderRGBA[3] == 0xff
)
{
forceAlphaGen = AGEN_SKIP; //already got it in this set since it does all 4 components
}
break;
case CGEN_EXACT_VERTEX:
memcpy( tess.svars.colors, tess.vertexColors, tess.numVertexes * sizeof( tess.vertexColors[0] ) );
break;
case CGEN_CONST:
for ( i = 0; i < tess.numVertexes; i++ ) {
byteAlias_t *baDest = (byteAlias_t *)&tess.svars.colors[i],
*baSource = (byteAlias_t *)&pStage->constantColor;
baDest->i = baSource->i;
}
break;
case CGEN_VERTEX:
if ( tr.identityLight == 1 )
{
memcpy( tess.svars.colors, tess.vertexColors, tess.numVertexes * sizeof( tess.vertexColors[0] ) );
}
else
{
for ( i = 0; i < tess.numVertexes; i++ )
{
tess.svars.colors[i][0] = tess.vertexColors[i][0] * tr.identityLight;
tess.svars.colors[i][1] = tess.vertexColors[i][1] * tr.identityLight;
tess.svars.colors[i][2] = tess.vertexColors[i][2] * tr.identityLight;
tess.svars.colors[i][3] = tess.vertexColors[i][3];
}
}
break;
case CGEN_ONE_MINUS_VERTEX:
if ( tr.identityLight == 1 )
{
for ( i = 0; i < tess.numVertexes; i++ )
{
tess.svars.colors[i][0] = 255 - tess.vertexColors[i][0];
tess.svars.colors[i][1] = 255 - tess.vertexColors[i][1];
tess.svars.colors[i][2] = 255 - tess.vertexColors[i][2];
}
}
else
{
for ( i = 0; i < tess.numVertexes; i++ )
{
tess.svars.colors[i][0] = ( 255 - tess.vertexColors[i][0] ) * tr.identityLight;
tess.svars.colors[i][1] = ( 255 - tess.vertexColors[i][1] ) * tr.identityLight;
tess.svars.colors[i][2] = ( 255 - tess.vertexColors[i][2] ) * tr.identityLight;
}
}
break;
case CGEN_FOG:
{
const fog_t *fog = tr.world->fogs + tess.fogNum;
for ( i = 0; i < tess.numVertexes; i++ ) {
byteAlias_t *ba = (byteAlias_t *)&tess.svars.colors[i];
ba->i = fog->colorInt;
}
}
break;
case CGEN_WAVEFORM:
RB_CalcWaveColor( &pStage->rgbWave, ( unsigned char * ) tess.svars.colors );
break;
case CGEN_ENTITY:
RB_CalcColorFromEntity( ( unsigned char * ) tess.svars.colors );
if ( forceAlphaGen == AGEN_IDENTITY &&
backEnd.currentEntity->e.shaderRGBA[3] == 0xff
)
{
forceAlphaGen = AGEN_SKIP; //already got it in this set since it does all 4 components
}
break;
case CGEN_ONE_MINUS_ENTITY:
RB_CalcColorFromOneMinusEntity( ( unsigned char * ) tess.svars.colors );
break;
case CGEN_LIGHTMAPSTYLE:
for ( i = 0; i < tess.numVertexes; i++ )
{
byteAlias_t *baDest = (byteAlias_t *)&tess.svars.colors[i],
*baSource = (byteAlias_t *)&styleColors[pStage->lightmapStyle];
baDest->ui = baSource->ui;
}
break;
}
//
// alphaGen
//
switch ( forceAlphaGen )
{
case AGEN_SKIP:
break;
case AGEN_IDENTITY:
if ( forceRGBGen != CGEN_IDENTITY && forceRGBGen != CGEN_LIGHTING_DIFFUSE ) {
if ( ( forceRGBGen == CGEN_VERTEX && tr.identityLight != 1 ) ||
forceRGBGen != CGEN_VERTEX ) {
for ( i = 0; i < tess.numVertexes; i++ ) {
tess.svars.colors[i][3] = 0xff;
}
}
}
break;
case AGEN_CONST:
if ( forceRGBGen != CGEN_CONST ) {
for ( i = 0; i < tess.numVertexes; i++ ) {
tess.svars.colors[i][3] = pStage->constantColor[3];
}
}
break;
case AGEN_WAVEFORM:
RB_CalcWaveAlpha( &pStage->alphaWave, ( unsigned char * ) tess.svars.colors );
break;
case AGEN_LIGHTING_SPECULAR:
RB_CalcSpecularAlpha( ( unsigned char * ) tess.svars.colors );
break;
case AGEN_ENTITY:
if ( forceRGBGen != CGEN_ENTITY ) { //already got it in the CGEN_entity since it does all 4 components
RB_CalcAlphaFromEntity( ( unsigned char * ) tess.svars.colors );
}
break;
case AGEN_ONE_MINUS_ENTITY:
RB_CalcAlphaFromOneMinusEntity( ( unsigned char * ) tess.svars.colors );
break;
case AGEN_VERTEX:
if ( forceRGBGen != CGEN_VERTEX ) {
for ( i = 0; i < tess.numVertexes; i++ ) {
tess.svars.colors[i][3] = tess.vertexColors[i][3];
}
}
break;
case AGEN_ONE_MINUS_VERTEX:
for ( i = 0; i < tess.numVertexes; i++ )
{
tess.svars.colors[i][3] = 255 - tess.vertexColors[i][3];
}
break;
case AGEN_PORTAL:
{
unsigned char alpha;
for ( i = 0; i < tess.numVertexes; i++ )
{
float len;
vec3_t v;
VectorSubtract( tess.xyz[i], backEnd.viewParms.ori.origin, v );
len = VectorLength( v );
len /= tess.shader->portalRange;
if ( len < 0 )
{
alpha = 0;
}
else if ( len > 1 )
{
alpha = 0xff;
}
else
{
alpha = len * 0xff;
}
tess.svars.colors[i][3] = alpha;
}
}
break;
case AGEN_BLEND:
if ( forceRGBGen != CGEN_VERTEX )
{
for ( i = 0; i < tess.numVertexes; i++ )
{
tess.svars.colors[i][3] = tess.vertexAlphas[i][pStage->index];
}
}
break;
default:
break;
}
//
// fog adjustment for colors to fade out as fog increases
//
if ( tess.fogNum )
{
switch ( pStage->adjustColorsForFog )
{
case ACFF_MODULATE_RGB:
RB_CalcModulateColorsByFog( ( unsigned char * ) tess.svars.colors );
break;
case ACFF_MODULATE_ALPHA:
RB_CalcModulateAlphasByFog( ( unsigned char * ) tess.svars.colors );
break;
case ACFF_MODULATE_RGBA:
RB_CalcModulateRGBAsByFog( ( unsigned char * ) tess.svars.colors );
break;
case ACFF_NONE:
break;
default:
break;
}
}
}
/*
===============
ComputeTexCoords
===============
*/
static void ComputeTexCoords( shaderStage_t *pStage ) {
int i;
int b;
for ( b = 0; b < NUM_TEXTURE_BUNDLES; b++ ) {
int tm;
//
// generate the texture coordinates
//
switch ( pStage->bundle[b].tcGen )
{
case TCGEN_IDENTITY:
memset( tess.svars.texcoords[b], 0, sizeof( float ) * 2 * tess.numVertexes );
break;
case TCGEN_TEXTURE:
for ( i = 0 ; i < tess.numVertexes ; i++ ) {
tess.svars.texcoords[b][i][0] = tess.texCoords[i][0][0];
tess.svars.texcoords[b][i][1] = tess.texCoords[i][0][1];
}
break;
case TCGEN_LIGHTMAP:
for ( i = 0 ; i < tess.numVertexes ; i++ ) {
tess.svars.texcoords[b][i][0] = tess.texCoords[i][1][0];
tess.svars.texcoords[b][i][1] = tess.texCoords[i][1][1];
}
break;
case TCGEN_LIGHTMAP1:
for ( i = 0 ; i < tess.numVertexes ; i++ ) {
tess.svars.texcoords[b][i][0] = tess.texCoords[i][2][0];
tess.svars.texcoords[b][i][1] = tess.texCoords[i][2][1];
}
break;
case TCGEN_LIGHTMAP2:
for ( i = 0 ; i < tess.numVertexes ; i++ ) {
tess.svars.texcoords[b][i][0] = tess.texCoords[i][3][0];
tess.svars.texcoords[b][i][1] = tess.texCoords[i][3][1];
}
break;
case TCGEN_LIGHTMAP3:
for ( i = 0 ; i < tess.numVertexes ; i++ ) {
tess.svars.texcoords[b][i][0] = tess.texCoords[i][4][0];
tess.svars.texcoords[b][i][1] = tess.texCoords[i][4][1];
}
break;
case TCGEN_VECTOR:
for ( i = 0 ; i < tess.numVertexes ; i++ ) {
tess.svars.texcoords[b][i][0] = DotProduct( tess.xyz[i], pStage->bundle[b].tcGenVectors[0] );
tess.svars.texcoords[b][i][1] = DotProduct( tess.xyz[i], pStage->bundle[b].tcGenVectors[1] );
}
break;
case TCGEN_FOG:
RB_CalcFogTexCoords( ( float * ) tess.svars.texcoords[b] );
break;
case TCGEN_ENVIRONMENT_MAPPED:
if ( r_environmentMapping->integer )
RB_CalcEnvironmentTexCoords( (float *)tess.svars.texcoords[b] );
else
memset( tess.svars.texcoords[b], 0, sizeof( float ) * 2 * tess.numVertexes );
break;
case TCGEN_BAD:
return;
}
//
// alter texture coordinates
//
for ( tm = 0; tm < pStage->bundle[b].numTexMods ; tm++ ) {
switch ( pStage->bundle[b].texMods[tm].type )
{
case TMOD_NONE:
tm = TR_MAX_TEXMODS; // break out of for loop
break;
case TMOD_TURBULENT:
RB_CalcTurbulentTexCoords( &pStage->bundle[b].texMods[tm].wave,
( float * ) tess.svars.texcoords[b] );
break;
case TMOD_ENTITY_TRANSLATE:
RB_CalcScrollTexCoords( backEnd.currentEntity->e.shaderTexCoord,
( float * ) tess.svars.texcoords[b] );
break;
case TMOD_SCROLL:
RB_CalcScrollTexCoords( pStage->bundle[b].texMods[tm].translate, //union scroll into translate
( float * ) tess.svars.texcoords[b] );
break;
case TMOD_SCALE:
RB_CalcScaleTexCoords( pStage->bundle[b].texMods[tm].translate, //union scroll into translate
( float * ) tess.svars.texcoords[b] );
break;
case TMOD_STRETCH:
RB_CalcStretchTexCoords( &pStage->bundle[b].texMods[tm].wave,
( float * ) tess.svars.texcoords[b] );
break;
case TMOD_TRANSFORM:
RB_CalcTransformTexCoords( &pStage->bundle[b].texMods[tm],
( float * ) tess.svars.texcoords[b] );
break;
case TMOD_ROTATE:
RB_CalcRotateTexCoords( pStage->bundle[b].texMods[tm].translate[0], //union rotateSpeed into translate[0]
( float * ) tess.svars.texcoords[b] );
break;
default:
Com_Error( ERR_DROP, "ERROR: unknown texmod '%d' in shader '%s'\n", pStage->bundle[b].texMods[tm].type, tess.shader->name );
break;
}
}
}
}
void ForceAlpha(unsigned char *dstColors, int TR_ForceEntAlpha)
{
int i;
dstColors += 3;
for ( i = 0; i < tess.numVertexes; i++, dstColors += 4 )
{
*dstColors = TR_ForceEntAlpha;
}
}
/*
** RB_IterateStagesGeneric
*/
#ifndef JK2_MODE
static vec4_t GLFogOverrideColors[GLFOGOVERRIDE_MAX] =
{
{ 0.0, 0.0, 0.0, 1.0 }, // GLFOGOVERRIDE_NONE
{ 0.0, 0.0, 0.0, 1.0 }, // GLFOGOVERRIDE_BLACK
{ 1.0, 1.0, 1.0, 1.0 } // GLFOGOVERRIDE_WHITE
};
static const float logtestExp2 = (sqrt( -log( 1.0 / 255.0 ) ));
#endif
extern bool tr_stencilled; //tr_backend.cpp
static void RB_IterateStagesGeneric( shaderCommands_t *input )
{
int stage;
#ifndef JK2_MODE
bool UseGLFog = false;
bool FogColorChange = false;
fog_t *fog = NULL;
if (tess.fogNum && tess.shader->fogPass && (tess.fogNum == tr.world->globalFog || tess.fogNum == tr.world->numfogs)
&& r_drawfog->value == 2)
{ // only gl fog global fog and the "special fog"
fog = tr.world->fogs + tess.fogNum;
if (tr.rangedFog)
{ //ranged fog, used for sniper scope
float fStart = fog->parms.depthForOpaque;
float fEnd = tr.distanceCull;
if (tr.rangedFog < 0.0f)
{ //special designer override
fStart = -tr.rangedFog;
fEnd = fog->parms.depthForOpaque;
if (fStart >= fEnd)
{
fStart = fEnd-1.0f;
}
}
else
{
//the greater tr.rangedFog is, the more fog we will get between the view point and cull distance
if ((tr.distanceCull-fStart) < tr.rangedFog)
{ //assure a minimum range between fog beginning and cutoff distance
fStart = tr.distanceCull-tr.rangedFog;
if (fStart < 16.0f)
{
fStart = 16.0f;
}
}
}
qglFogi(GL_FOG_MODE, GL_LINEAR);
qglFogf(GL_FOG_START, fStart);
qglFogf(GL_FOG_END, fEnd);
}
else
{
qglFogi(GL_FOG_MODE, GL_EXP2);
qglFogf(GL_FOG_DENSITY, logtestExp2 / fog->parms.depthForOpaque);
}
if ( g_bRenderGlowingObjects )
{
const float fogColor[3] = { 0.0f, 0.0f, 0.0f };
qglFogfv(GL_FOG_COLOR, fogColor );
}
else
{
qglFogfv(GL_FOG_COLOR, fog->parms.color);
}
qglEnable(GL_FOG);
UseGLFog = true;
}
#endif
for ( stage = 0; stage < input->shader->numUnfoggedPasses; stage++ )
{
shaderStage_t *pStage = &tess.xstages[stage];
if ( !pStage->active )
{
break;
}
// Reject this stage if it's not a glow stage but we are doing a glow pass.
if ( g_bRenderGlowingObjects && !pStage->glow )
{
continue;
}
int stateBits = pStage->stateBits;
alphaGen_t forceAlphaGen = (alphaGen_t)0;
colorGen_t forceRGBGen = (colorGen_t)0;
// allow skipping out to show just lightmaps during development
if ( stage && r_lightmap->integer)
{
if ( !( pStage->bundle[0].isLightmap || pStage->bundle[1].isLightmap || pStage->bundle[0].vertexLightmap ) )
{
continue; // need to keep going in case the LM is in a later stage
}
else
{
stateBits = (GLS_DSTBLEND_ZERO | GLS_SRCBLEND_ONE); //we want to replace the prior stages with this LM, not blend
}
}
if ( backEnd.currentEntity )
{
if ( backEnd.currentEntity->e.renderfx & RF_DISINTEGRATE1 )
{
// we want to be able to rip a hole in the thing being disintegrated, and by doing the depth-testing it avoids some kinds of artefacts, but will probably introduce others?
// NOTE: adjusting the alphaFunc seems to help a bit
stateBits = GLS_SRCBLEND_SRC_ALPHA | GLS_DSTBLEND_ONE_MINUS_SRC_ALPHA | GLS_DEPTHMASK_TRUE | GLS_ATEST_GE_C0;
}
if ( backEnd.currentEntity->e.renderfx & RF_ALPHA_FADE )
{
if ( backEnd.currentEntity->e.shaderRGBA[3] < 255 )
{
stateBits = GLS_SRCBLEND_SRC_ALPHA | GLS_DSTBLEND_ONE_MINUS_SRC_ALPHA;
forceAlphaGen = AGEN_ENTITY;
}
}
if ( backEnd.currentEntity->e.renderfx & RF_RGB_TINT )
{//want to use RGBGen from ent
forceRGBGen = CGEN_ENTITY;
}
}
if (pStage->ss && pStage->ss->surfaceSpriteType)
{
// We check for surfacesprites AFTER drawing everything else
continue;
}
#ifndef JK2_MODE
if (UseGLFog)
{
if (pStage->mGLFogColorOverride)
{
qglFogfv(GL_FOG_COLOR, GLFogOverrideColors[pStage->mGLFogColorOverride]);
FogColorChange = true;
}
else if (FogColorChange && fog)
{
FogColorChange = false;
qglFogfv(GL_FOG_COLOR, fog->parms.color);
}
}
#endif
if (!input->fading)
{ //this means ignore this, while we do a fade-out
ComputeColors( pStage, forceAlphaGen, forceRGBGen );
}
ComputeTexCoords( pStage );
if ( !setArraysOnce )
{
qglEnableClientState( GL_COLOR_ARRAY );
qglColorPointer( 4, GL_UNSIGNED_BYTE, 0, input->svars.colors );
}
if (pStage->bundle[0].isLightmap && r_debugStyle->integer >= 0)
{
if (pStage->lightmapStyle != r_debugStyle->integer)
{
if (pStage->lightmapStyle == 0)
{
GL_State( GLS_DSTBLEND_ZERO | GLS_SRCBLEND_ZERO );
R_DrawElements( input->numIndexes, input->indexes );
}
continue;
}
}
//
// do multitexture
//
if ( pStage->bundle[1].image != 0 )
{
DrawMultitextured( input, stage );
}
else
{
static bool lStencilled = false;
if ( !setArraysOnce )
{
qglTexCoordPointer( 2, GL_FLOAT, 0, input->svars.texcoords[0] );
}
//
// set state
//
if ( (tess.shader == tr.distortionShader) ||
(backEnd.currentEntity && (backEnd.currentEntity->e.renderfx & RF_DISTORTION)) )
{ //special distortion effect -rww
//tr.screenImage should have been set for this specific entity before we got in here.
GL_Bind( tr.screenImage );
GL_Cull(CT_TWO_SIDED);
}
else if ( pStage->bundle[0].vertexLightmap && ( r_vertexLight->integer ) && r_lightmap->integer )
{
GL_Bind( tr.whiteImage );
}
else
R_BindAnimatedImage( &pStage->bundle[0] );
if (tess.shader == tr.distortionShader &&
glConfig.stencilBits >= 4)
{ //draw it to the stencil buffer!
tr_stencilled = true;
lStencilled = true;
qglEnable(GL_STENCIL_TEST);
qglStencilFunc(GL_ALWAYS, 1, 0xFFFFFFFF);
qglStencilOp(GL_KEEP, GL_KEEP, GL_INCR);
qglColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
//don't depthmask, don't blend.. don't do anything
GL_State(0);
}
else if (backEnd.currentEntity && (backEnd.currentEntity->e.renderfx & RF_FORCE_ENT_ALPHA))
{
ForceAlpha((unsigned char *) tess.svars.colors, backEnd.currentEntity->e.shaderRGBA[3]);
GL_State(GLS_SRCBLEND_SRC_ALPHA | GLS_DSTBLEND_ONE_MINUS_SRC_ALPHA);
}
else
{
GL_State( stateBits );
}
//
// draw
//
R_DrawElements( input->numIndexes, input->indexes );
if (lStencilled)
{ //re-enable the color buffer, disable stencil test
lStencilled = false;
qglDisable(GL_STENCIL_TEST);
qglColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
}
}
}
#ifndef JK2_MODE
if (FogColorChange)
{
qglFogfv(GL_FOG_COLOR, fog->parms.color);
}
#endif
}
/*
** RB_StageIteratorGeneric
*/
void RB_StageIteratorGeneric( void )
{
shaderCommands_t *input;
int stage;
input = &tess;
RB_DeformTessGeometry();
//
// log this call
//
if ( r_logFile->integer )
{
// don't just call LogComment, or we will get
// a call to va() every frame!
GLimp_LogComment( va("--- RB_StageIteratorGeneric( %s ) ---\n", tess.shader->name) );
}
//
// set face culling appropriately
//
GL_Cull( input->shader->cullType );
// set polygon offset if necessary
if ( input->shader->polygonOffset )
{
qglEnable( GL_POLYGON_OFFSET_FILL );
qglPolygonOffset( r_offsetFactor->value, r_offsetUnits->value );
}
//
// if there is only a single pass then we can enable color
// and texture arrays before we compile, otherwise we need
// to avoid compiling those arrays since they will change
// during multipass rendering
//
if ( tess.numPasses > 1 || input->shader->multitextureEnv )
{
setArraysOnce = qfalse;
qglDisableClientState (GL_COLOR_ARRAY);
qglDisableClientState (GL_TEXTURE_COORD_ARRAY);
}
else
{
setArraysOnce = qtrue;
qglEnableClientState( GL_COLOR_ARRAY);
qglColorPointer( 4, GL_UNSIGNED_BYTE, 0, tess.svars.colors );
qglEnableClientState( GL_TEXTURE_COORD_ARRAY);
qglTexCoordPointer( 2, GL_FLOAT, 0, tess.svars.texcoords[0] );
}
//
// lock XYZ
//
qglVertexPointer (3, GL_FLOAT, 16, input->xyz); // padded for SIMD
if (qglLockArraysEXT)
{
qglLockArraysEXT(0, input->numVertexes);
GLimp_LogComment( "glLockArraysEXT\n" );
}
//
// enable color and texcoord arrays after the lock if necessary
//
if ( !setArraysOnce )
{
qglEnableClientState( GL_TEXTURE_COORD_ARRAY );
qglEnableClientState( GL_COLOR_ARRAY );
}
//
// call shader function
//
RB_IterateStagesGeneric( input );
//
// now do any dynamic lighting needed
//
if ( tess.dlightBits && tess.shader->sort <= SS_OPAQUE
&& !(tess.shader->surfaceFlags & (SURF_NODLIGHT | SURF_SKY) ) ) {
if (r_dlightStyle->integer>0)
{
ProjectDlightTexture2();
}
else
{
ProjectDlightTexture();
}
}
//
// now do fog
//
#ifdef JK2_MODE
if (tess.fogNum && tess.shader->fogPass && r_drawfog->value)
#else
if (tr.world && (tess.fogNum != tr.world->globalFog || r_drawfog->value != 2) && r_drawfog->value && tess.fogNum && tess.shader->fogPass)
#endif
{
RB_FogPass();
}
//
// unlock arrays
//
if (qglUnlockArraysEXT)
{
qglUnlockArraysEXT();
GLimp_LogComment( "glUnlockArraysEXT\n" );
}
//
// reset polygon offset
//
if ( input->shader->polygonOffset )
{
qglDisable( GL_POLYGON_OFFSET_FILL );
}
// Now check for surfacesprites.
if (r_surfaceSprites->integer)
{
for ( stage = 1; stage < tess.shader->numUnfoggedPasses; stage++ )
{
if (tess.xstages[stage].ss && tess.xstages[stage].ss->surfaceSpriteType)
{ // Draw the surfacesprite
RB_DrawSurfaceSprites( &tess.xstages[stage], input);
}
}
}
#ifndef JK2_MODE
//don't disable the hardware fog til after we do surface sprites
if (r_drawfog->value == 2 &&
tess.fogNum && tess.shader->fogPass &&
(tess.fogNum == tr.world->globalFog || tess.fogNum == tr.world->numfogs))
{
qglDisable(GL_FOG);
}
#endif
}
/*
** RB_EndSurface
*/
void RB_EndSurface( void ) {
shaderCommands_t *input;
input = &tess;
if (input->numIndexes == 0) {
return;
}
if (input->indexes[SHADER_MAX_INDEXES-1] != 0) {
Com_Error (ERR_DROP, "RB_EndSurface() - SHADER_MAX_INDEXES hit");
}
if (input->xyz[SHADER_MAX_VERTEXES-1][0] != 0) {
Com_Error (ERR_DROP, "RB_EndSurface() - SHADER_MAX_VERTEXES hit");
}
if ( tess.shader == tr.shadowShader ) {
RB_ShadowTessEnd();
return;
}
// for debugging of sort order issues, stop rendering after a given sort value
if ( r_debugSort->integer && r_debugSort->integer < tess.shader->sort ) {
return;
}
if ( skyboxportal )
{
// world
if(!(backEnd.refdef.rdflags & RDF_SKYBOXPORTAL))
{
if(tess.currentStageIteratorFunc == RB_StageIteratorSky)
{ // don't process these tris at all
return;
}
}
// portal sky
else
{
if(!drawskyboxportal)
{
if( !(tess.currentStageIteratorFunc == RB_StageIteratorSky))
{ // /only/ process sky tris
return;
}
}
}
}
//
// update performance counters
//
if (!backEnd.projection2D)
{
backEnd.pc.c_shaders++;
backEnd.pc.c_vertexes += tess.numVertexes;
backEnd.pc.c_indexes += tess.numIndexes;
backEnd.pc.c_totalIndexes += tess.numIndexes * tess.numPasses;
#ifdef JK2_MODE
if (tess.fogNum && tess.shader->fogPass && r_drawfog->value)
#else
if (tess.fogNum && tess.shader->fogPass && r_drawfog->value == 1)
#endif
{ // Fogging adds an additional pass
backEnd.pc.c_totalIndexes += tess.numIndexes;
}
}
//
// call off to shader specific tess end function
//
tess.currentStageIteratorFunc();
//
// draw debugging stuff
//
if ( r_showtris->integer )
{
DrawTris (input);
}
if ( r_shownormals->integer ) {
DrawNormals (input);
}
// clear shader so we can tell we don't have any unclosed surfaces
tess.numIndexes = 0;
GLimp_LogComment( "----------\n" );
}
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