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/*
===========================================================================
Copyright (C) 1999-2005 Id Software, Inc.
Copyright (C) 2007 HermitWorks Entertainment Corporation
This file is part of the Space Trader source code.
The Space Trader source code is free software; you can redistribute it
and/or modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of the License,
or (at your option) any later version.
The Space Trader source code 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 the Space Trader source code; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
===========================================================================
*/
#include "tr_local.h"
/*
THIS ENTIRE FILE IS BACK END
This file deals with applying shaders to surface data in the tess struct.
*/
/*
===================
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;
int last[3] = { -1, -1, -1 };
qboolean even;
c_begins++;
if ( numIndexes <= 0 ) {
return;
}
glBegin( GL_TRIANGLE_STRIP );
// 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 ( ( (int)indexes[i+0] == last[2] ) && ( (int)indexes[i+1] == last[1] ) )
{
element( indexes[i+2] );
c_vertexes++;
assert( indexes[i+2] < tess.numVertexes );
even = qtrue;
}
// otherwise we're done with this strip so finish it and start
// a new one
else
{
glEnd();
glBegin( 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] == (int)indexes[i+1] ) && ( last[0] == (int)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
{
glEnd();
glBegin( 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];
}
glEnd();
}
/*
==================
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 )
primitives = 2;
if( primitives == 2 || tess.primType != GL_TRIANGLES )
{
glDrawElements( tess.primType,
numIndexes,
GL_INDEX_TYPE,
indexes );
backEnd.pc.c_drawCalls++;
return;
}
if( primitives == 1 )
{
R_DrawStripElements( numIndexes, indexes, glArrayElement );
return;
}
// anything else will cause no drawing
}
/*
=============================================================
SURFACE SHADERS
=============================================================
*/
shaderCommands_t tess;
static qboolean setArraysOnce;
static void R_SetCull( cullType_t ct )
{
switch( ct )
{
case CT_FRONT_SIDED:
R_StateSetCull( backEnd.viewParms.isMirror ? GL_FRONT : GL_BACK );
break;
case CT_BACK_SIDED:
R_StateSetCull( backEnd.viewParms.isMirror ? GL_BACK : GL_FRONT );
break;
case CT_TWO_SIDED:
R_StateSetCull( GL_FRONT_AND_BACK );
break;
}
}
/*
=================
R_BindAnimatedImage
=================
*/
static void R_BindAnimatedImage( textureBundle_t *bundle, GLenum tmu )
{
int index;
if ( bundle->isVideoMap )
{
ri.CIN_RunCinematic(bundle->videoMapHandle);
ri.CIN_UploadCinematic(bundle->videoMapHandle);
return;
}
if( bundle->numImageAnimations <= 1 )
{
R_StateSetTexture( bundle->image[0], tmu );
}
else
{
// it is necessary to do this messy calc to make sure animations line up
// exactly with waveforms of the same frequency
index = (int)(tess.shaderTime * bundle->imageAnimationSpeed * FUNCTABLE_SIZE);
index >>= FUNCTABLE_SIZE2;
if ( index < 0 ) {
index = 0; // may happen with shader time offsets
}
index %= bundle->numImageAnimations;
R_StateSetTexture( bundle->image[ index ], tmu );
}
R_StateSetTextureSampler( &bundle->sampler, tmu );
}
/*
================
DrawTris
Draws triangle outlines for debugging
================
*/
static void DrawTris( shaderCommands_t *input )
{
stateGroup_t sg = R_StateBeginGroup();
R_StateSetTexture( tr.whiteImage, GL_TEXTURE0 );
R_SetCull( CT_TWO_SIDED );
glColor4f( 1, 1, 1, 1 );
GL_State( GLS_POLYMODE_LINE | GLS_DEPTHMASK_TRUE );
R_StateSetDepthRange( 0, 0 );
glLineWidth( 1 );
R_StateRestorePriorGroupStates( sg );
glDisableClientState( GL_COLOR_ARRAY );
R_StateSetActiveClientTmuUntracked( GL_TEXTURE1 );
glDisableClientState( GL_TEXTURE_COORD_ARRAY );
R_StateSetActiveClientTmuUntracked( GL_TEXTURE0 );
glDisableClientState( GL_TEXTURE_COORD_ARRAY );
glVertexPointer( 3, GL_FLOAT, 16, input->xyz ); // padded for SIMD
glTexCoord2f( 0, 0 );
if( GLEW_EXT_compiled_vertex_array )
glLockArraysEXT(0, input->numVertexes);
R_DrawElements( input->numIndexes, input->indexes );
if( GLEW_EXT_compiled_vertex_array )
glUnlockArraysEXT();
}
/*
================
DrawNormals
Draws vertex normals for debugging
================
*/
static void DrawNormals( shaderCommands_t *input )
{
int i;
vec3_t temp;
stateGroup_t sg = R_StateBeginGroup();
R_StateSetTexture( tr.whiteImage, GL_TEXTURE0 );
glColor4f( 1, 1, 1, 1 );
R_StateSetDepthRange( 0, 0 ); // never occluded
R_SetCull( CT_TWO_SIDED );
GL_State( GLS_POLYMODE_LINE | GLS_DEPTHMASK_TRUE );
glLineWidth( 1 );
R_StateRestorePriorGroupStates( sg );
glBegin( GL_LINES );
for( i = 0; i < input->numVertexes; i++ )
{
glVertex3fv( input->xyz[i] );
VectorMA( input->xyz[i], 2, input->normal[i], temp );
glVertex3fv( temp );
}
glEnd();
}
/*
==============
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, GLenum primType )
{
shader_t *state = (shader->remappedShader) ? shader->remappedShader : shader;
tess.numIndexes = 0;
tess.numVertexes = 0;
tess.shader = state;
tess.fogNum = fogNum;
tess.primType = primType;
tess.dlightBits = 0; // will be OR'd in by surface functions
tess.xstages = state->stages;
tess.numPasses = state->numUnfoggedPasses;
tess.currentStageIteratorFunc = state->optimalStageIteratorFunc;
tess.shaderTime = backEnd.refdef.floatTime - tess.shader->timeOffset;
if (tess.shader->clampTime && tess.shaderTime >= tess.shader->clampTime) {
tess.shaderTime = tess.shader->clampTime;
}
}
void RB_CheckSurface( shader_t *shader, int fogNum, GLenum primType )
{
/*
Given:
#define GL_POINTS 0x0000 //no restart
#define GL_LINES 0x0001 //no restart
#define GL_LINE_LOOP 0x0002 //restart
#define GL_LINE_STRIP 0x0003 //restart
#define GL_TRIANGLES 0x0004 //no restart
#define GL_TRIANGLE_STRIP 0x0005 //restart
#define GL_TRIANGLE_FAN 0x0006 //restart
#define GL_QUADS 0x0007 //no restart
#define GL_QUAD_STRIP 0x0008 //restart
#define GL_POLYGON 0x0009 //restart
We can define a bitmask to determine whether we need a reset or not by
placing a 1 in the n'th lowest bit if a restart is not needed. This gives
us the following least-significant bits:
1001 0011
Which is:
0x93
*/
#define RESTART_MASK 0x93
if( shader != tess.shader || fogNum != tess.fogNum ||
primType != tess.primType || !((RESTART_MASK >> primType) & 0x1) )
{
if( tess.numIndexes )
RB_EndSurface();
if( backEnd.projection2D )
backEnd.currentEntity = &backEnd.entity2D;
RB_BeginSurface( shader, 0, primType );
}
#undef RESTART_MASK
}
/*
===================
DrawMultitextured
output = t0 * t1 or t0 + t1
t0 = most upstream according to spec
t1 = most downstream according to spec
===================
*/
static stateGroup_t DrawMultitextured( const shaderCommands_t *input, int stage, stateGroup_t prevSg, qboolean firstPass )
{
shaderStage_t *pStage;
pStage = tess.xstages[stage];
R_StateSetActiveClientTmuUntracked( GL_TEXTURE0 );
glEnableClientState( GL_TEXTURE_COORD_ARRAY );
glTexCoordPointer( 2, GL_FLOAT, 0, input->svars.texcoords[0] );
R_StateSetActiveClientTmuUntracked( GL_TEXTURE1 );
glEnableClientState( GL_TEXTURE_COORD_ARRAY );
glTexCoordPointer( 2, GL_FLOAT, 0, input->svars.texcoords[1] );
{
stateGroup_t sg = R_StateBeginGroup();
GL_State( pStage->stateBits );
if( pStage->lineWidth > 0.0F )
glLineWidth( pStage->lineWidth );
R_BindAnimatedImage( &pStage->bundle[0], GL_TEXTURE0 );
R_BindAnimatedImage( &pStage->bundle[1], GL_TEXTURE1 );
R_StateSetTextureEnvMode( r_lightmap->integer ? GL_REPLACE : tess.shader->multitextureEnv, GL_TEXTURE1 );
if( firstPass )
R_StateRestorePriorGroupStates( prevSg );
else
R_StateRestoreGroupStates( prevSg );
prevSg = sg;
R_DrawElements( input->numIndexes, input->indexes );
}
return prevSg;
}
/*
===================
ProjectDlightTexture
Perform dynamic lighting with another rendering pass
===================
*/
static stateGroup_t ProjectDlightTexture( stateGroup_t prevSg )
{
int i, l;
#if idppc_altivec
vec_t origin0, origin1, origin2;
float texCoords0, texCoords1;
vector float floatColorVec0, floatColorVec1;
vector float modulateVec, colorVec, zero;
vector short colorShort;
vector signed int colorInt;
vector unsigned char floatColorVecPerm, modulatePerm, colorChar;
vector unsigned char vSel = (vector unsigned char)(0x00, 0x00, 0x00, 0xff,
0x00, 0x00, 0x00, 0xff,
0x00, 0x00, 0x00, 0xff,
0x00, 0x00, 0x00, 0xff);
#else
vec3_t origin;
#endif
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;
vec3_t floatColor;
float modulate;
qboolean firstPass;
if ( !backEnd.refdef.num_dlights ) {
return prevSg;
}
glPushClientAttrib( GL_CLIENT_VERTEX_ARRAY_BIT );
#if idppc_altivec
// There has to be a better way to do this so that floatColor
// and/or modulate are already 16-byte aligned.
floatColorVecPerm = vec_lvsl(0,(float *)floatColor);
modulatePerm = vec_lvsl(0,(float *)&modulate);
modulatePerm = (vector unsigned char)vec_splat((vector unsigned int)modulatePerm,0);
zero = (vector float)vec_splat_s8(0);
#endif
firstPass = qtrue;
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];
#if idppc_altivec
origin0 = dl->transformed[0];
origin1 = dl->transformed[1];
origin2 = dl->transformed[2];
#else
VectorCopy( dl->transformed, origin );
#endif
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;
#if idppc_altivec
floatColorVec0 = vec_ld(0, floatColor);
floatColorVec1 = vec_ld(11, floatColor);
floatColorVec0 = vec_perm(floatColorVec0,floatColorVec0,floatColorVecPerm);
#endif
for ( i = 0 ; i < tess.numVertexes ; i++, texCoords += 2, colors += 4 ) {
#if idppc_altivec
vec_t dist0, dist1, dist2;
#else
vec3_t dist;
#endif
int clip;
#if idppc_altivec
//VectorSubtract( origin, tess.xyz[i], dist );
dist0 = origin0 - tess.xyz[i][0];
dist1 = origin1 - tess.xyz[i][1];
dist2 = origin2 - tess.xyz[i][2];
texCoords0 = 0.5f + dist0 * scale;
texCoords1 = 0.5f + dist1 * scale;
clip = 0;
if ( texCoords0 < 0.0f ) {
clip |= 1;
} else if ( texCoords0 > 1.0f ) {
clip |= 2;
}
if ( texCoords1 < 0.0f ) {
clip |= 4;
} else if ( texCoords1 > 1.0f ) {
clip |= 8;
}
texCoords[0] = texCoords0;
texCoords[1] = texCoords1;
// modulate the strength based on the height and color
if ( dist2 > radius ) {
clip |= 16;
modulate = 0.0f;
} else if ( dist2 < -radius ) {
clip |= 32;
modulate = 0.0f;
} else {
dist2 = Q_fabs(dist2);
if ( dist2 < radius * 0.5f ) {
modulate = 1.0f;
} else {
modulate = 2.0f * (radius - dist2) * scale;
}
}
clipBits[i] = clip;
modulateVec = vec_ld(0,(float *)&modulate);
modulateVec = vec_perm(modulateVec,modulateVec,modulatePerm);
colorVec = vec_madd(floatColorVec0,modulateVec,zero);
colorInt = vec_cts(colorVec,0); // RGBx
colorShort = vec_pack(colorInt,colorInt); // RGBxRGBx
colorChar = vec_packsu(colorShort,colorShort); // RGBxRGBxRGBxRGBx
colorChar = vec_sel(colorChar,vSel,vSel); // RGBARGBARGBARGBA replace alpha with 255
vec_ste((vector unsigned int)colorChar,0,(unsigned int *)colors); // store color
#else
VectorSubtract( origin, tess.xyz[i], dist );
texCoords[0] = 0.5f + dist[0] * scale;
texCoords[1] = 0.5f + dist[1] * 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[2] > radius ) {
clip |= 16;
modulate = 0.0f;
} else if ( dist[2] < -radius ) {
clip |= 32;
modulate = 0.0f;
} else {
dist[2] = Q_fabs(dist[2]);
if ( dist[2] < radius * 0.5f ) {
modulate = 1.0f;
} else {
modulate = 2.0f * (radius - dist[2]) * scale;
}
}
clipBits[i] = clip;
colors[0] = (int)(floatColor[0] * modulate);
colors[1] = (int)(floatColor[1] * modulate);
colors[2] = (int)(floatColor[2] * modulate);
colors[3] = 255;
#endif
}
backEnd.pc.c_dlightVertexes += tess.numVertexes;
// 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;
}
R_StateSetActiveClientTmuUntracked( GL_TEXTURE0 );
glEnableClientState( GL_TEXTURE_COORD_ARRAY );
glTexCoordPointer( 2, GL_FLOAT, 0, texCoordsArray[0] );
glEnableClientState( GL_COLOR_ARRAY );
glColorPointer( 4, GL_UNSIGNED_BYTE, 0, colorArray );
{
stateGroup_t sg = R_StateBeginGroup();
samplerState_t sampler = { GL_CLAMP_TO_EDGE_EXT, GL_CLAMP_TO_EDGE_EXT, GL_CLAMP_TO_EDGE_EXT, GL_NONE, GL_NONE, 0 };
R_StateSetTexture( tr.dlightImage, GL_TEXTURE0 );
R_StateSetTextureSampler( &sampler, GL_TEXTURE0 );
// include GLS_DEPTHFUNC_EQUAL so alpha tested surfaces don't add light
// where they aren't rendered
GL_State( dl->additive ? (GLS_SRCBLEND_ONE | GLS_DSTBLEND_ONE | GLS_DEPTHFUNC_EQUAL) :
(GLS_SRCBLEND_DST_COLOR | GLS_DSTBLEND_ONE | GLS_DEPTHFUNC_EQUAL) );
if( firstPass )
{
R_StateRestorePriorGroupStates( prevSg );
firstPass = qfalse;
}
else
R_StateRestoreGroupStates( prevSg );
prevSg = sg;
R_DrawElements( numIndexes, hitIndexes );
}
backEnd.pc.c_totalIndexes += numIndexes;
backEnd.pc.c_dlightIndexes += numIndexes;
}
glPopClientAttrib();
return prevSg;
}
/*
===================
RB_FogPass
Blends a fog texture on top of everything else
===================
*/
static stateGroup_t RB_FogPass( stateGroup_t prevSg )
{
fog_t *fog;
int i;
fog = tr.world->fogs + tess.fogNum;
for ( i = 0; i < tess.numVertexes; i++ ) {
* ( int * )&tess.svars.colors[i] = fog->colorInt;
}
RB_CalcFogTexCoords( ( float * ) tess.svars.texcoords[0] );
glPushClientAttrib( GL_CLIENT_VERTEX_ARRAY_BIT );
glEnableClientState( GL_COLOR_ARRAY );
glColorPointer( 4, GL_UNSIGNED_BYTE, 0, tess.svars.colors );
R_StateSetActiveClientTmuUntracked( GL_TEXTURE0 );
glEnableClientState( GL_TEXTURE_COORD_ARRAY);
glTexCoordPointer( 2, GL_FLOAT, 0, tess.svars.texcoords[0] );
{
stateGroup_t sg;
samplerState_t sampler;
sampler.minFilter = GL_NONE;
sampler.magFilter = GL_NONE;
sampler.maxAniso = 0;
sampler.wrapR = GL_CLAMP_TO_EDGE;
sampler.wrapS = GL_CLAMP_TO_EDGE;
sampler.wrapT = GL_CLAMP_TO_EDGE;
sg = R_StateBeginGroup();
R_StateSetTexture( tr.fogImage, GL_TEXTURE0 );
R_StateSetTextureSampler( &sampler, GL_TEXTURE0 );
GL_State( tess.shader->fogPass == FP_EQUAL ?
(GLS_SRCBLEND_SRC_ALPHA | GLS_DSTBLEND_ONE_MINUS_SRC_ALPHA | GLS_DEPTHFUNC_EQUAL) :
(GLS_SRCBLEND_SRC_ALPHA | GLS_DSTBLEND_ONE_MINUS_SRC_ALPHA) );
R_StateRestorePriorGroupStates( sg );
prevSg = sg;
R_DrawElements( tess.numIndexes, tess.indexes );
}
glPopClientAttrib();
return prevSg;
}
/*
===============
ComputeColors
===============
*/
static void ComputeColors( shaderStage_t *pStage )
{
int i;
//
// rgbGen
//
switch ( pStage->rgbGen )
{
case CGEN_SKIP:
break;
case CGEN_IDENTITY:
Com_Memset( tess.svars.colors, 0xff, tess.numVertexes * 4 );
break;
default:
case CGEN_IDENTITY_LIGHTING:
Com_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_DIFFUSE2:
RB_CalcDiffuseColor2( pStage, (byte*)tess.svars.colors );
break;
case CGEN_INVERSE_LIGHTING_DIFFUSE:
RB_CalcDiffuseColor( ( unsigned char * ) tess.svars.colors );
for( i = 0; i < tess.numVertexes; i++ )
{
tess.svars.colors[i][0] = 0xFF - tess.svars.colors[i][0];
tess.svars.colors[i][1] = 0xFF - tess.svars.colors[i][1];
tess.svars.colors[i][2] = 0xFF - tess.svars.colors[i][2];
}
break;
case CGEN_EXACT_VERTEX:
Com_Memcpy( tess.svars.colors, tess.vertexColors, tess.numVertexes * sizeof( tess.vertexColors[0] ) );
break;
case CGEN_CONST:
for ( i = 0; i < tess.numVertexes; i++ ) {
*(int *)tess.svars.colors[i] = *(int *)pStage->constantColor;
}
break;
case CGEN_VERTEX:
if ( tr.identityLight == 1 )
{
Com_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:
{
fog_t *fog;
fog = tr.world->fogs + tess.fogNum;
for ( i = 0; i < tess.numVertexes; i++ ) {
* ( int * )&tess.svars.colors[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 );
break;
case CGEN_ONE_MINUS_ENTITY:
RB_CalcColorFromOneMinusEntity( ( unsigned char * ) tess.svars.colors );
break;
}
//
// alphaGen
//
switch ( pStage->alphaGen )
{
case AGEN_SKIP:
break;
case AGEN_IDENTITY:
if ( pStage->rgbGen != CGEN_IDENTITY ) {
if ( ( pStage->rgbGen == CGEN_VERTEX && tr.identityLight != 1 ) ||
pStage->rgbGen != CGEN_VERTEX ) {
for ( i = 0; i < tess.numVertexes; i++ ) {
tess.svars.colors[i][3] = 0xff;
}
}
}
break;
case AGEN_CONST:
if ( pStage->rgbGen != 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( pStage, (byte*)tess.svars.colors );
break;
case AGEN_GLOW_HALO:
RB_CalcGlowHaloAlpha( pStage, (byte*)tess.svars.colors );
break;
case AGEN_ENTITY:
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 ( pStage->rgbGen != 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.or.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;
}
//
// 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;
}
}
}
/*
===============
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:
Com_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_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:
RB_CalcEnvironmentTexCoords( ( float * ) tess.svars.texcoords[b] );
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].scroll,
( float * ) tess.svars.texcoords[b] );
break;
case TMOD_SCALE:
RB_CalcScaleTexCoords( pStage->bundle[b].texMods[tm].scale,
( 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].rotateSpeed,
( float * ) tess.svars.texcoords[b] );
break;
default:
ri.Error( ERR_DROP, "ERROR: unknown texmod '%d' in shader '%s'\n", pStage->bundle[b].texMods[tm].type, tess.shader->name );
break;
}
}
}
}
/*
** RB_IterateStagesGeneric
*/
static stateGroup_t RB_IterateStagesGeneric( shaderCommands_t *input, stateGroup_t prevSg )
{
int stage;
GLimp_LogComment( 1, "BEGIN RB_IterateStagesGeneric( %s )", input->shader->name );
for( stage = 0; stage < MAX_SHADER_STAGES; stage++ )
{
shaderStage_t *pStage = tess.xstages[stage];
if( !pStage )
break;
GLimp_LogComment( 2, "LOOP START Stage %i", stage );
if( !setArraysOnce )
{
ComputeColors( pStage );
ComputeTexCoords( pStage );
glPushClientAttrib( GL_CLIENT_VERTEX_ARRAY_BIT );
glEnableClientState( GL_COLOR_ARRAY );
glColorPointer( 4, GL_UNSIGNED_BYTE, 0, input->svars.colors );
}
//
// do multitexture
//
if( pStage->customDraw )
{
GLimp_LogComment( 3, "Stage is Custom Draw" );
prevSg = pStage->customDraw( input, stage, prevSg, stage == 0 );
}
else
{
qboolean multitex = pStage->bundle[ 1 ].image[ 0 ] != 0;
GLimp_LogComment( 3, multitex ? "Stage is Multi-Texture" : "Stage is Single-Texture" );
if( !setArraysOnce )
{
if( multitex )
{
R_StateSetActiveClientTmuUntracked( GL_TEXTURE1 );
glEnableClientState( GL_TEXTURE_COORD_ARRAY );
glTexCoordPointer( 2, GL_FLOAT, 0, input->svars.texcoords[1] );
}
R_StateSetActiveClientTmuUntracked( GL_TEXTURE0 );
glEnableClientState( GL_TEXTURE_COORD_ARRAY );
glTexCoordPointer( 2, GL_FLOAT, 0, input->svars.texcoords[0] );
}
{
stateGroup_t sg = R_StateBeginGroup();
if( pStage->bundle[0].vertexLightmap && ( (r_vertexLight->integer && !r_uiFullScreen->integer) ) && r_lightmap->integer )
{
R_StateSetTexture( tr.whiteImage, GL_TEXTURE0 );
R_StateSetTextureEnvMode2( &pStage->bundle[0].texEnv, GL_TEXTURE0 );
}
else
{
if( multitex )
{
R_BindAnimatedImage( pStage->bundle + 1, GL_TEXTURE1 );
R_StateSetTextureEnvMode2( &pStage->bundle[1].texEnv, GL_TEXTURE1 );
}
R_BindAnimatedImage( &pStage->bundle[0], GL_TEXTURE0 );
R_StateSetTextureEnvMode2( &pStage->bundle[0].texEnv, GL_TEXTURE0 );
}
GL_State( pStage->stateBits );
if( pStage->lineWidth > 0.0F )
glLineWidth( pStage->lineWidth );
if( stage == 0 )
R_StateRestorePriorGroupStates( prevSg );
else
R_StateRestoreGroupStates( prevSg );
prevSg = sg;
R_DrawElements( input->numIndexes, input->indexes );
}
GLimp_LogComment( 2, "LOOP END Stage %i", stage );
}
if( !setArraysOnce )
glPopClientAttrib();
// allow skipping out to show just lightmaps during development
if ( r_lightmap->integer && ( pStage->bundle[0].isLightmap || pStage->bundle[1].isLightmap || pStage->bundle[0].vertexLightmap ) )
{
break;
}
}
GLimp_LogComment( 1, "END RB_IterateStagesGeneric( %s )", input->shader->name );
return prevSg;
}
bool R_ShadeSupportsDeluxeMapping( void )
{
if( R_StateGetNumTextureUnits() < 4 )
return false;
if( R_SpIsStandardVertexProgramSupported( SPV_DELUXEMAP ) &&
R_SpIsStandardFragmentProgramSupported( SPF_DELUXEMAP ) )
return true;
if( R_SpIsStandardVertexProgramSupported( SPV_DELUXEMAP_NO_SPEC ) &&
GLEW_ARB_texture_env_combine &&
GLEW_ARB_texture_env_dot3 )
return true;
return false;
}
static stateGroup_t RB_ShadeDrawEntitySpecular( const shaderCommands_t *input, int stage, stateGroup_t sgPrev, qboolean restorePrior )
{
stateGroup_t sg;
shaderStage_t *pStage = input->xstages[stage];
GLimp_LogComment( 1, "BEGIN RB_ShadeDrawEntitySpecular( %s )", input->shader->name );
#ifdef _DEBUG
if( backEnd.currentEntity->e.reType == RT_MODEL )
{
model_t *m = R_GetModelByHandle( backEnd.currentEntity->e.hModel );
if( m->name[0] )
GLimp_LogComment( 3, "Entity: %s", m->name );
}
#endif
if( !setArraysOnce )
{
R_StateSetActiveClientTmuUntracked( GL_TEXTURE0 );
glEnableClientState( GL_TEXTURE_COORD_ARRAY );
glTexCoordPointer( 2, GL_FLOAT, 0, input->svars.texcoords[0] );
}
glEnableClientState( GL_NORMAL_ARRAY );
glNormalPointer( GL_FLOAT, sizeof( input->normal[0] ), input->normal );
sg = R_StateBeginGroup();
R_BindAnimatedImage( &pStage->bundle[0], GL_TEXTURE0 );
GL_State( pStage->stateBits );
R_SpSetStandardVertexProgram( SPV_SPEC );
R_SpSetStandardFragmentProgram( SPF_SPEC );
{
if( backEnd.currentEntity )
{
float tmp[4];
tmp[3] = 0;
//send up light direction
{
affine_t a;
Affine_SetFromMatrix( &a, backEnd.or.modelMatrix );
Affine_MulVec( tmp, &a, backEnd.currentEntity->lightDir );
VectorNormalize( tmp );
}
glProgramLocalParameter4fvARB( GL_FRAGMENT_PROGRAM_ARB, 0, tmp );
VectorScale( backEnd.currentEntity->ambientLight, 1.0F / 255.0F, tmp );
glProgramLocalParameter4fvARB( GL_FRAGMENT_PROGRAM_ARB, 1, tmp );
VectorScale( backEnd.currentEntity->directedLight, 1.0F / 255.0F, tmp );
glProgramLocalParameter4fvARB( GL_FRAGMENT_PROGRAM_ARB, 2, tmp );
tmp[0] = backEnd.currentEntity->directedLight[0] * pStage->specCtrl[0] / 255.0F;
tmp[1] = backEnd.currentEntity->directedLight[1] * pStage->specCtrl[1] / 255.0F;
tmp[2] = backEnd.currentEntity->directedLight[2] * pStage->specCtrl[2] / 255.0F;
tmp[3] = pStage->specCtrl[3];
glProgramLocalParameter4fvARB( GL_FRAGMENT_PROGRAM_ARB, 3, tmp );
}
else
{
glProgramLocalParameter4fARB( GL_FRAGMENT_PROGRAM_ARB, 0, 0, 0, 0, 0 );
glProgramLocalParameter4fARB( GL_FRAGMENT_PROGRAM_ARB, 1, 0, 0, 0, 0 );
glProgramLocalParameter4fARB( GL_FRAGMENT_PROGRAM_ARB, 2, 0, 0, 0, 0 );
glProgramLocalParameter4fARB( GL_FRAGMENT_PROGRAM_ARB, 3, 0, 0, 0, 0 );
}
}
if( restorePrior )
R_StateRestorePriorGroupStates( sgPrev );
else
R_StateRestoreGroupStates( sgPrev );
R_DrawElements( input->numIndexes, input->indexes );
if( setArraysOnce )
//no push/pop on the outside, kill the normal array
glDisableClientState( GL_NORMAL_ARRAY );
GLimp_LogComment( 1, "END RB_ShadeDrawEntitySpecular( %s )", input->shader->name );
return sg;
}
stateGroup_t RB_ShadeDrawEntitySpecularNormalMapped( const shaderCommands_t *input, int stage, stateGroup_t sgPrev, qboolean restorePrior )
{
stateGroup_t sg;
shaderStage_t *pStage = input->xstages[stage];
GLimp_LogComment( 1, "BEGIN RB_ShadeDrawEntitySpecular( %s )", input->shader->name );
#ifdef _DEBUG
if( backEnd.currentEntity->e.reType == RT_MODEL )
{
model_t *m = R_GetModelByHandle( backEnd.currentEntity->e.hModel );
if( m->name[0] )
GLimp_LogComment( 3, "Entity: %s", m->name );
}
#endif
if( !setArraysOnce )
{
R_StateSetActiveClientTmuUntracked( GL_TEXTURE0 );
glEnableClientState( GL_TEXTURE_COORD_ARRAY );
glTexCoordPointer( 2, GL_FLOAT, 0, input->svars.texcoords[0] );
}
glEnableVertexAttribArrayARB( 6 );
glVertexAttribPointerARB( 6, 3, GL_FLOAT, GL_FALSE, sizeof( input->tangent[0] ), input->tangent );
glEnableVertexAttribArrayARB( 7 );
glVertexAttribPointerARB( 7, 3, GL_FLOAT, GL_FALSE, sizeof( input->binormal[0] ), input->binormal );
glEnableClientState( GL_NORMAL_ARRAY );
glNormalPointer( GL_FLOAT, sizeof( input->normal[0] ), input->normal );
sg = R_StateBeginGroup();
R_BindAnimatedImage( &pStage->bundle[0], GL_TEXTURE0 );
R_StateSetTexture( pStage->normalMap, GL_TEXTURE1 );
GL_State( pStage->stateBits );
R_SpSetStandardVertexProgram( SPV_SPEC_NM );
{
float tmp[4];
tmp[3] = 1;
VectorCopy( backEnd.or.viewOrigin, tmp );
glProgramLocalParameter4fvARB( GL_VERTEX_PROGRAM_ARB, 0, tmp );
}
R_SpSetStandardFragmentProgram( SPF_SPEC_NM );
{
if( backEnd.currentEntity )
{
float tmp[4];
tmp[3] = 1;
VectorScale( backEnd.currentEntity->ambientLight, 1.0F / 255.0F, tmp );
glProgramLocalParameter4fvARB( GL_FRAGMENT_PROGRAM_ARB, 0, tmp );
VectorScale( backEnd.currentEntity->directedLight, 1.0F / 255.0F, tmp );
glProgramLocalParameter4fvARB( GL_FRAGMENT_PROGRAM_ARB, 1, tmp );
tmp[0] = backEnd.currentEntity->directedLight[0] * pStage->specCtrl[0] / 255.0F;
tmp[1] = backEnd.currentEntity->directedLight[1] * pStage->specCtrl[1] / 255.0F;
tmp[2] = backEnd.currentEntity->directedLight[2] * pStage->specCtrl[2] / 255.0F;
tmp[3] = pStage->specCtrl[3];
glProgramLocalParameter4fvARB( GL_FRAGMENT_PROGRAM_ARB, 2, tmp );
VectorScale( backEnd.currentEntity->directedLight, 0.0F / 255.0F, tmp );
glProgramLocalParameter4fvARB( GL_FRAGMENT_PROGRAM_ARB, 3, tmp );
VectorCopy( backEnd.currentEntity->lightDir, tmp );
glProgramLocalParameter4fvARB( GL_FRAGMENT_PROGRAM_ARB, 4, tmp );
tmp[0] = 2;
tmp[1] = -1;
tmp[2] = 4 - 4 * sqrtf( pStage->bumpDepth );
tmp[3] = -0.5F * tmp[2];
glProgramLocalParameter4fvARB( GL_FRAGMENT_PROGRAM_ARB, 5, tmp );
}
else
{
glProgramLocalParameter4fARB( GL_FRAGMENT_PROGRAM_ARB, 0, 0, 0, 0, 0 );
glProgramLocalParameter4fARB( GL_FRAGMENT_PROGRAM_ARB, 1, 0, 0, 0, 0 );
glProgramLocalParameter4fARB( GL_FRAGMENT_PROGRAM_ARB, 2, 0, 0, 0, 0 );
glProgramLocalParameter4fARB( GL_FRAGMENT_PROGRAM_ARB, 3, 0, 0, 0, 0 );
glProgramLocalParameter4fARB( GL_FRAGMENT_PROGRAM_ARB, 4, 0, 0, 0, 0 );
glProgramLocalParameter4fARB( GL_FRAGMENT_PROGRAM_ARB, 5, 0, 0, 0, 0 );
}
}
if( restorePrior )
R_StateRestorePriorGroupStates( sgPrev );
else
R_StateRestoreGroupStates( sgPrev );
R_DrawElements( input->numIndexes, input->indexes );
if( setArraysOnce )
//no push/pop on the outside, kill the normal array
glDisableClientState( GL_NORMAL_ARRAY );
glDisableVertexAttribArrayARB( 7 );
glDisableVertexAttribArrayARB( 6 );
GLimp_LogComment( 1, "END RB_ShadeDrawEntitySpecular( %s )", input->shader->name );
return sg;
}
static stateGroup_t RB_ShadeDrawEntityDiffuseInternal( const shaderCommands_t *input, int stage, stateGroup_t sgPrev, qboolean restorePrior, bool invert )
{
stateGroup_t sg;
shaderStage_t *pStage = input->xstages[stage];
GLimp_LogComment( 1, "BEGIN RB_ShadeDrawEntityDiffuse( %s )", input->shader->name );
#ifdef _DEBUG
if( backEnd.currentEntity->e.reType == RT_MODEL )
{
model_t *m = R_GetModelByHandle( backEnd.currentEntity->e.hModel );
if( m->name[0] )
GLimp_LogComment( 3, "Entity: %s", m->name );
}
#endif
if( !setArraysOnce )
{
R_StateSetActiveClientTmuUntracked( GL_TEXTURE0 );
glEnableClientState( GL_TEXTURE_COORD_ARRAY );
glTexCoordPointer( 2, GL_FLOAT, 0, input->svars.texcoords[0] );
}
glEnableClientState( GL_NORMAL_ARRAY );
glNormalPointer( GL_FLOAT, sizeof( input->normal[0] ), input->normal );
sg = R_StateBeginGroup();
R_BindAnimatedImage( &pStage->bundle[0], GL_TEXTURE0 );
GL_State( pStage->stateBits );
R_SpSetStandardVertexProgram( SPV_DIFFUSE );
R_SpSetStandardFragmentProgram( SPF_DIFFUSE );
{
if( backEnd.currentEntity )
{
float tmp[4];
tmp[3] = 0;
//send up light direction
{
affine_t a;
Affine_SetFromMatrix( &a, backEnd.or.modelMatrix );
Affine_MulVec( tmp, &a, backEnd.currentEntity->lightDir );
VectorNormalize( tmp );
}
glProgramLocalParameter4fvARB( GL_FRAGMENT_PROGRAM_ARB, 0, tmp );
VectorScale( backEnd.currentEntity->ambientLight, 1.0F / 255.0F, tmp );
glProgramLocalParameter4fvARB( GL_FRAGMENT_PROGRAM_ARB, 1, tmp );
VectorScale( backEnd.currentEntity->directedLight, 1.0F / 255.0F, tmp );
glProgramLocalParameter4fvARB( GL_FRAGMENT_PROGRAM_ARB, 2, tmp );
if( pStage->rgbGen == CGEN_INVERSE_LIGHTING_DIFFUSE || invert )
{
tmp[0] = -1;
tmp[1] = 1;
}
else
{
tmp[0] = 1;
tmp[1] = 0;
}
tmp[2] = tmp[3] = 0;
glProgramLocalParameter4fvARB( GL_FRAGMENT_PROGRAM_ARB, 3, tmp );
}
else
{
glProgramLocalParameter4fARB( GL_FRAGMENT_PROGRAM_ARB, 0, 0, 0, 0, 0 );
glProgramLocalParameter4fARB( GL_FRAGMENT_PROGRAM_ARB, 1, 0, 0, 0, 0 );
glProgramLocalParameter4fARB( GL_FRAGMENT_PROGRAM_ARB, 2, 0, 0, 0, 0 );
glProgramLocalParameter4fARB( GL_FRAGMENT_PROGRAM_ARB, 3, 0, 0, 0, 0 );
}
}
if( restorePrior )
R_StateRestorePriorGroupStates( sgPrev );
else
R_StateRestoreGroupStates( sgPrev );
R_DrawElements( input->numIndexes, input->indexes );
if( setArraysOnce )
//no push/pop on the outside, kill the normal array
glDisableClientState( GL_NORMAL_ARRAY );
GLimp_LogComment( 1, "END RB_ShadeDrawEntityDiffuse( %s )", input->shader->name );
return sg;
}
static stateGroup_t RB_ShadeDrawEntityDiffuse( const shaderCommands_t *input, int stage, stateGroup_t sgPrev, qboolean restorePrior )
{
return RB_ShadeDrawEntityDiffuseInternal( input, stage, sgPrev, restorePrior, false );
}
static stateGroup_t RB_ShadeDrawEntityInverseDiffuse( const shaderCommands_t *input, int stage, stateGroup_t sgPrev, qboolean restorePrior )
{
return RB_ShadeDrawEntityDiffuseInternal( input, stage, sgPrev, restorePrior, true );
}
static stateGroup_t RB_ShadeDrawDeluxeMapDebugInfo( const shaderCommands_t *input, int stage, stateGroup_t sgPrev, qboolean restorePrior )
{
stateGroup_t sg;
shaderStage_t *pStage = input->xstages[stage];
shaderStage_t *pNextStage = input->xstages[stage + 1];
int tcidx0 = 0, tcidx1 = -1;
GLimp_LogComment( 1, "BEGIN RB_ShadeDrawDeluxeMapDebugInfo( %s )", input->shader->name );
glPushClientAttrib( GL_CLIENT_VERTEX_ARRAY_BIT );
sg = R_StateBeginGroup();
switch( r_lightmap->integer )
{
case 2: //normal
R_StateSetTexture( pNextStage->normalMap, GL_TEXTURE0 );
R_StateSetTextureSampler( &pNextStage->bundle[0].sampler, GL_TEXTURE0 );
tcidx0 = 0;
break;
case 3: //deluxe
R_StateSetTexture( pStage->deluxeMap, GL_TEXTURE0 );
R_StateSetTextureSampler( &pStage->bundle[0].sampler, GL_TEXTURE0 );
tcidx0 = 1;
break;
case 4: //n dot l
R_StateSetTexture( pNextStage->normalMap, GL_TEXTURE0 );
R_StateSetTextureSampler( &pNextStage->bundle[0].sampler, GL_TEXTURE0 );
R_StateSetTexture( pStage->deluxeMap, GL_TEXTURE1 );
R_StateSetTextureSampler( &pStage->bundle[0].sampler, GL_TEXTURE1 );
R_StateSetTextureEnvMode( GL_REPLACE, GL_TEXTURE0 );
{
textureEnv_t env;
env.complex = true;
env.color_mode = GL_DOT3_RGB_ARB;
env.alpha_mode = GL_REPLACE;
env.src[0].color_src = GL_PREVIOUS_ARB;
env.src[0].color_op = GL_SRC_COLOR;
env.src[0].alpha_src = GL_PREVIOUS_ARB;
env.src[0].alpha_op = GL_SRC_ALPHA;
env.src[1].color_src = GL_TEXTURE;
env.src[1].color_op = GL_SRC_COLOR;
env.src[1].alpha_src = GL_TEXTURE;
env.src[1].alpha_op = GL_SRC_ALPHA;
env.color_scale = 1.0F;
env.alpha_scale = 1.0F;
R_StateSetTextureEnvMode2( &env, GL_TEXTURE1 );
}
tcidx0 = 0;
tcidx1 = 1;
break;
default: //light
R_StateSetTexture( pStage->bundle[0].image[0], GL_TEXTURE0 );
R_StateSetTextureSampler( &pStage->bundle[0].sampler, GL_TEXTURE0 );
tcidx0 = 1;
break;
}
R_StateSetActiveClientTmuUntracked( GL_TEXTURE0 );
glEnableClientState( GL_TEXTURE_COORD_ARRAY );
glTexCoordPointer( 2, GL_FLOAT, 0, input->svars.texcoords[tcidx0] );
if( tcidx1 != -1 )
{
R_StateSetActiveClientTmuUntracked( GL_TEXTURE1 );
glEnableClientState( GL_TEXTURE_COORD_ARRAY );
glTexCoordPointer( 2, GL_FLOAT, 0, input->svars.texcoords[tcidx1] );
}
GL_State( GLS_DEFAULT );
if( restorePrior )
R_StateRestorePriorGroupStates( sgPrev );
else
R_StateRestoreGroupStates( sgPrev );
R_DrawElements( input->numIndexes, input->indexes );
glPopClientAttrib();
GLimp_LogComment( 1, "END RB_ShadeDrawDeluxeMapDebugInfo( %s )", input->shader->name );
return sg;
}
static stateGroup_t RB_ShadeDrawDeluxeMap( const shaderCommands_t *input, int stage, stateGroup_t sgPrev, qboolean restorePrior )
{
bool setExAttribs;
stateGroup_t sg;
shaderStage_t *pStage = input->xstages[stage];
shaderStage_t *pNextStage = input->xstages[stage + 1];
if( r_lightmap->integer )
return RB_ShadeDrawDeluxeMapDebugInfo( input, stage, sgPrev, restorePrior );
GLimp_LogComment( 1, "BEGIN RB_ShadeDrawDeluxeMap( %s )", input->shader->name );
if( !setArraysOnce )
{
R_StateSetActiveClientTmuUntracked( GL_TEXTURE0 );
glEnableClientState( GL_TEXTURE_COORD_ARRAY );
glTexCoordPointer( 2, GL_FLOAT, 0, input->svars.texcoords[0] );
}
R_StateSetActiveClientTmuUntracked( GL_TEXTURE1 );
glEnableClientState( GL_TEXTURE_COORD_ARRAY );
glTexCoordPointer( 2, GL_FLOAT, 0, input->svars.texcoords[1] );
sg = R_StateBeginGroup();
GL_State( GLS_DEFAULT );
setExAttribs = false;
switch( r_deluxemap->integer )
{
case 1:
deluxe_no_spec:
//deluxe w/o spec
//expanding the texture data using a vertex program is a touch
//faster than uploading each set of texture coordinates twice
R_SpSetStandardVertexProgram( SPV_DELUXEMAP_NO_SPEC );
R_StateSetTexture( pNextStage->normalMap, GL_TEXTURE0 );
R_StateSetTextureSampler( &pNextStage->bundle[0].sampler, GL_TEXTURE0 );
R_StateSetTexture( pStage->deluxeMap, GL_TEXTURE1 );
R_StateSetTextureSampler( &pStage->bundle[0].sampler, GL_TEXTURE1 );
R_BindAnimatedImage( pNextStage->bundle + 0, GL_TEXTURE2 ); //diffuse
R_BindAnimatedImage( pStage->bundle + 0, GL_TEXTURE3 ); //light
R_StateSetTextureEnvMode( GL_REPLACE, GL_TEXTURE0 );
{
textureEnv_t env;
env.complex = true;
env.color_mode = GL_DOT3_RGBA_ARB;
env.src[0].color_src = GL_TEXTURE;
env.src[0].color_op = GL_SRC_COLOR;
env.src[1].color_src = GL_PREVIOUS_ARB;
env.src[1].color_op = GL_SRC_COLOR;
env.color_scale = 1.0F;
env.alpha_scale = 1.0F;
R_StateSetTextureEnvMode2( &env, GL_TEXTURE1 );
}
R_StateSetTextureEnvMode( GL_MODULATE, GL_TEXTURE2 );
R_StateSetTextureEnvMode( GL_MODULATE, GL_TEXTURE3 );
break;
case 2:
//deluxe w/ spec
if( !R_SpIsStandardVertexProgramSupported( SPV_DELUXEMAP ) ||
!R_SpIsStandardFragmentProgramSupported( SPF_DELUXEMAP ) )
goto deluxe_no_spec;
R_StateSetTexture( pNextStage->normalMap, GL_TEXTURE0 );
R_StateSetTextureSampler( &pNextStage->bundle[0].sampler, GL_TEXTURE0 );
R_StateSetTexture( pStage->deluxeMap, GL_TEXTURE1 );
R_StateSetTextureSampler( &pStage->bundle[0].sampler, GL_TEXTURE1 );
R_BindAnimatedImage( pNextStage->bundle + 0, GL_TEXTURE2 ); //diffuse
R_BindAnimatedImage( pStage->bundle + 0, GL_TEXTURE3 ); //light
setExAttribs = true;
glEnableClientState( GL_NORMAL_ARRAY );
glNormalPointer( GL_FLOAT, sizeof( input->normal[0] ), input->normal );
glEnableVertexAttribArrayARB( 6 );
glVertexAttribPointerARB( 6, 3, GL_FLOAT, GL_FALSE, sizeof( input->tangent[0] ), input->tangent );
glEnableVertexAttribArrayARB( 7 );
glVertexAttribPointerARB( 7, 3, GL_FLOAT, GL_FALSE, sizeof( input->binormal[0] ), input->binormal );
R_SpSetStandardVertexProgram( SPV_DELUXEMAP );
{
vec4_t tmp;
tmp[3] = 0;
VectorCopy( backEnd.or.viewOrigin, tmp );
glProgramLocalParameter4fvARB( GL_VERTEX_PROGRAM_ARB, 0, tmp );
}
R_SpSetStandardFragmentProgram( SPF_DELUXEMAP );
{
vec4_t tmp;
VectorSet( tmp, 0.5F, 0.53F, 0.51F ); //specular color = lightmap * this
tmp[3] = 35; //specular exponent
glProgramLocalParameter4fvARB( GL_FRAGMENT_PROGRAM_ARB, 0, tmp );
}
break;
default:
//default light mapping
R_BindAnimatedImage( pNextStage->bundle + 0, GL_TEXTURE0 ); //diffuse
R_BindAnimatedImage( pStage->bundle + 0, GL_TEXTURE1 ); //light
R_StateSetTextureEnvMode( GL_REPLACE, GL_TEXTURE0 );
R_StateSetTextureEnvMode( GL_MODULATE, GL_TEXTURE0 );
break;
}
if( restorePrior )
R_StateRestorePriorGroupStates( sgPrev );
else
R_StateRestoreGroupStates( sgPrev );
R_DrawElements( input->numIndexes, input->indexes );
glDisableClientState( GL_TEXTURE_COORD_ARRAY );
if( setExAttribs )
{
glDisableVertexAttribArrayARB( 7 );
glDisableVertexAttribArrayARB( 6 );
glDisableClientState( GL_NORMAL_ARRAY );
}
if( !setArraysOnce )
{
R_StateSetActiveClientTmuUntracked( GL_TEXTURE0 );
glDisableClientState( GL_TEXTURE_COORD_ARRAY );
}
GLimp_LogComment( 1, "END RB_ShadeDrawDeluxeMap( %s )", input->shader->name );
return sg;
}
static stateGroup_t RB_ShadeSkipStage( const shaderCommands_t *input, int stage, stateGroup_t sgPrev, qboolean restorePrior )
{
/*
The caller expects state management to happen here,
so do that but *nothing* else...
*/
stateGroup_t sg;
GLimp_LogComment( 1, "BEGIN RB_ShadeSkipStage( %s )", input->shader->name );
sg = R_StateBeginGroup();
if( restorePrior )
R_StateRestorePriorGroupStates( sgPrev );
else
R_StateRestoreGroupStates( sgPrev );
GLimp_LogComment( 1, "END RB_ShadeSkipStage( %s )", input->shader->name );
return sg;
}
static qboolean R_IsSpecStage( shaderStage_t *pStage )
{
const textureEnv_t *env0 = &pStage->bundle[0].texEnv;
const textureEnv_t *env1 = &pStage->bundle[1].texEnv;
if( pStage->rgbGen == CGEN_LIGHTING_DIFFUSE && pStage->alphaGen == AGEN_LIGHTING_SPECULAR &&
pStage->bundle[0].image[0] &&
pStage->bundle[1].numImageAnimations <= 1 && pStage->bundle[1].image[0] == tr.whiteImage &&
!env0->complex && env0->color_mode == GL_MODULATE &&
env1->complex && pStage->bundle[0].tcGen == TCGEN_TEXTURE )
{
if( env1->color_mode == GL_ADD && env1->alpha_mode == GL_REPLACE &&
env1->src[0].color_src == GL_PREVIOUS && env1->src[0].color_op == GL_SRC_COLOR &&
env1->src[0].alpha_src == GL_PREVIOUS && env1->src[0].alpha_op == GL_SRC_ALPHA &&
env1->src[1].color_src == GL_PREVIOUS && env1->src[1].color_op == GL_SRC_ALPHA &&
env1->src[1].alpha_src == GL_PREVIOUS && env1->src[1].alpha_op == GL_SRC_ALPHA )
{
return qtrue;
}
}
return qfalse;
}
static qboolean R_IsDiffuseStage( shaderStage_t *pStage )
{
if( (pStage->rgbGen == CGEN_LIGHTING_DIFFUSE || pStage->rgbGen == CGEN_INVERSE_LIGHTING_DIFFUSE) &&
pStage->alphaGen == AGEN_IDENTITY &&
pStage->bundle[0].image[0] && !pStage->bundle[1].image[0] &&
!pStage->bundle[0].texEnv.complex && pStage->bundle[0].texEnv.color_mode == GL_MODULATE &&
pStage->bundle[0].tcGen == TCGEN_TEXTURE )
{
return qtrue;
}
return qfalse;
}
void R_ShadeComputeOptimalGenericStageIteratorFuncs( shader_t *shader, shaderStage_t *stages )
{
int stage;
qboolean skip = qfalse;
if( Q_stricmp( shader->special, "starmap:planet-dnch" ) == 0 &&
stages[0].active && stages[1].active && stages[2].active &&
R_IsSpecStage( stages + 0 ) &&
stages[1].rgbGen == CGEN_INVERSE_LIGHTING_DIFFUSE &&
((stages[1].stateBits & (GLS_SRCBLEND_BITS | GLS_DSTBLEND_BITS)) == (GLS_SRCBLEND_ONE | GLS_DSTBLEND_ONE)) &&
stages[2].rgbGen == CGEN_LIGHTING_DIFFUSE &&
((stages[2].stateBits & (GLS_SRCBLEND_BITS | GLS_DSTBLEND_BITS)) == (GLS_SRCBLEND_SRC_ALPHA | GLS_DSTBLEND_ONE_MINUS_SRC_ALPHA)) )
{
//stages[0].customDraw = RB_ShadeDrawPlanetNDCH;
//stages[1].customDraw = RB_ShadeSkipStage;
//stages[2].customDraw = RB_ShadeSkipStage;
//return;
}
for( stage = 0; stage < MAX_SHADER_STAGES; stage++ )
{
shaderStage_t *pStage = stages + stage;
shaderStage_t *pNextStage = 0;
if( !pStage->active )
break;
if( stage < MAX_SHADER_STAGES - 1 && stages[stage + 1].active )
pNextStage = stages + stage + 1;
if( skip )
{
pStage->customDraw = RB_ShadeSkipStage;
skip = qfalse;
continue;
}
pStage->customDraw = NULL;
if( pNextStage && pNextStage->normalMap )
{
if( R_ShadeSupportsDeluxeMapping() && pStage->deluxeMap )
{
pStage->customDraw = RB_ShadeDrawDeluxeMap;
pStage->bundle[0].tcGen = TCGEN_TEXTURE;
pStage->bundle[1].tcGen = TCGEN_LIGHTMAP;
shader->neededAttribs |= VA_NORMAL | VA_TANGENT | VA_BINORMAL;
skip = qtrue; //RB_ShadeDrawDeluxeMap will draw both this and the next, don't let the next also draw
}
continue;
}
if( pStage->bundle[1].image[0] && shader->multitextureEnv )
{
pStage->customDraw = DrawMultitextured;
continue;
}
if( R_SpIsStandardVertexProgramSupported( SPV_SPEC ) &&
R_SpIsStandardFragmentProgramSupported( SPF_SPEC ) &&
R_IsSpecStage( pStage ) )
{
if( pStage->normalMap && R_SpIsStandardVertexProgramSupported( SPV_SPEC_NM ) &&
R_SpIsStandardFragmentProgramSupported( SPF_SPEC_NM ) )
{
shader->neededAttribs |= VA_NORMAL | VA_TANGENT | VA_BINORMAL;
pStage->customDraw = RB_ShadeDrawEntitySpecularNormalMapped;
}
else
pStage->customDraw = RB_ShadeDrawEntitySpecular;
if( pNextStage )
{
if( pNextStage->rgbGen == CGEN_SKIP )
pNextStage->rgbGen = pStage->rgbGen;
if( pNextStage->alphaGen == AGEN_SKIP )
pNextStage->alphaGen = pStage->alphaGen;
}
pStage->rgbGen = CGEN_SKIP;
pStage->alphaGen = AGEN_SKIP;
continue;
}
if( R_SpIsStandardVertexProgramSupported( SPV_DIFFUSE ) &&
R_SpIsStandardFragmentProgramSupported( SPF_DIFFUSE ) &&
R_IsDiffuseStage( pStage ) )
{
pStage->customDraw = (pStage->rgbGen == CGEN_INVERSE_LIGHTING_DIFFUSE) ?
RB_ShadeDrawEntityInverseDiffuse : RB_ShadeDrawEntityDiffuse;
if( pNextStage )
{
if( pNextStage->rgbGen == CGEN_SKIP )
pNextStage->rgbGen = pStage->rgbGen;
if( pNextStage->alphaGen == AGEN_SKIP )
pNextStage->alphaGen = pStage->alphaGen;
}
pStage->rgbGen = CGEN_SKIP;
pStage->alphaGen = AGEN_SKIP;
continue;
}
}
}
/*
** RB_StageIteratorGeneric
*/
void RB_StageIteratorGeneric( void )
{
shaderCommands_t *input = &tess;
RB_DeformTessGeometry();
GLimp_LogComment( 1, "BEGIN RB_StageIteratorGeneric( %s )", input->shader->name );
//
// 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;
glDisableClientState (GL_COLOR_ARRAY);
R_StateSetActiveClientTmuUntracked( GL_TEXTURE1 );
glDisableClientState (GL_TEXTURE_COORD_ARRAY);
R_StateSetActiveClientTmuUntracked( GL_TEXTURE0 );
glDisableClientState (GL_TEXTURE_COORD_ARRAY);
}
else
{
setArraysOnce = qtrue;
glPushClientAttrib( GL_CLIENT_VERTEX_ARRAY_BIT );
if( input->shader->stages[ 0 ] )
{
ComputeColors( input->shader->stages[0] );
ComputeTexCoords( input->shader->stages[0] );
}
glEnableClientState( GL_COLOR_ARRAY);
glColorPointer( 4, GL_UNSIGNED_BYTE, 0, tess.svars.colors );
if ( input->shader->stages[ 0 ] && input->shader->stages[ 0 ]->bundle[ 1 ].image[ 0 ] )
{
R_StateSetActiveClientTmuUntracked( GL_TEXTURE1 );
glEnableClientState( GL_TEXTURE_COORD_ARRAY);
glTexCoordPointer( 2, GL_FLOAT, 0, tess.svars.texcoords[1] );
}
R_StateSetActiveClientTmuUntracked( GL_TEXTURE0 );
glEnableClientState( GL_TEXTURE_COORD_ARRAY);
glTexCoordPointer( 2, GL_FLOAT, 0, tess.svars.texcoords[0] );
}
//
// lock XYZ
//
glVertexPointer( 3, GL_FLOAT, 16, input->xyz ); // padded for SIMD
if( GLEW_EXT_compiled_vertex_array )
glLockArraysEXT( 0, input->numVertexes );
{
stateGroup_t sg = R_StateBeginGroup();
R_SetCull( input->shader->cullType );
if( input->shader->polygonOffset )
R_StateSetPolygonOffset( r_offsetFactor->value * input->shader->polygonOffset,
r_offsetUnits->value * input->shader->polygonOffset );
//
// call shader function
//
sg = RB_IterateStagesGeneric( input, sg );
//
// now do any dynamic lighting needed
//
if ( tess.dlightBits && tess.shader->sort <= SS_OPAQUE
&& !(tess.shader->surfaceFlags & (SURF_NODLIGHT | SURF_SKY) ) ) {
sg = ProjectDlightTexture( sg );
}
//
// now do fog
//
if ( tess.fogNum && tess.shader->fogPass ) {
RB_FogPass( sg );
}
}
//
// unlock arrays
//
if( GLEW_EXT_compiled_vertex_array )
glUnlockArraysEXT();
if( setArraysOnce )
glPopClientAttrib();
GLimp_LogComment( 1, "END RB_StageIteratorGeneric( %s )", input->shader->name );
}
/*
** RB_StageIteratorVertexLitTexture
*/
void RB_StageIteratorVertexLitTexture( void )
{
shaderCommands_t *input;
shader_t *shader;
input = &tess;
shader = input->shader;
//
// compute colors
//
RB_CalcDiffuseColor( (unsigned char *) tess.svars.colors );
GLimp_LogComment( 1, "BEGIN RB_StageIteratorVertexLitTexturedUnfogged( %s )", input->shader->name );
//
// set arrays and lock
//
glPushClientAttrib( GL_CLIENT_VERTEX_ARRAY_BIT );
glEnableClientState( GL_COLOR_ARRAY);
glColorPointer( 4, GL_UNSIGNED_BYTE, 0, tess.svars.colors );
R_StateSetActiveClientTmuUntracked( GL_TEXTURE0 );
glEnableClientState( GL_TEXTURE_COORD_ARRAY);
glTexCoordPointer( 2, GL_FLOAT, 16, tess.texCoords[0][0] );
glVertexPointer( 3, GL_FLOAT, 16, input->xyz );
if( GLEW_EXT_compiled_vertex_array )
glLockArraysEXT( 0, input->numVertexes );
{
stateGroup_t sg = R_StateBeginGroup();
R_SetCull( input->shader->cullType );
GL_State( tess.xstages[0]->stateBits );
R_BindAnimatedImage( &tess.xstages[0]->bundle[0], GL_TEXTURE0 );
R_StateRestorePriorGroupStates( sg );
R_DrawElements( input->numIndexes, input->indexes );
//
// now do any dynamic lighting needed
//
if( tess.dlightBits && tess.shader->sort <= SS_OPAQUE )
sg = ProjectDlightTexture( sg );
//
// now do fog
//
if( tess.fogNum && tess.shader->fogPass )
sg = RB_FogPass( sg );
}
//
// unlock arrays
//
if( GLEW_EXT_compiled_vertex_array )
glUnlockArraysEXT();
glPopClientAttrib();
GLimp_LogComment( 1, "END RB_StageIteratorVertexLitTexturedUnfogged( %s )", input->shader->name );
}
void RB_StageIteratorLightmappedMultitexture( void )
{
shaderCommands_t *input = &tess;
GLimp_LogComment( 1, "BEGIN RB_StageIteratorLightmappedMultitexture( %s )", input->shader->name );
glVertexPointer( 3, GL_FLOAT, 16, input->xyz );
glPushClientAttrib( GL_CLIENT_VERTEX_ARRAY_BIT );
glDisableClientState( GL_COLOR_ARRAY );
glColor4f( 1, 1, 1, 1 );
R_StateSetActiveClientTmuUntracked( GL_TEXTURE1 );
glEnableClientState( GL_TEXTURE_COORD_ARRAY );
glTexCoordPointer( 2, GL_FLOAT, 16, tess.texCoords[0][1] );
R_StateSetActiveClientTmuUntracked( GL_TEXTURE0 );
glEnableClientState( GL_TEXTURE_COORD_ARRAY );
glTexCoordPointer( 2, GL_FLOAT, 16, tess.texCoords[0][0] );
if( GLEW_EXT_compiled_vertex_array )
glLockArraysEXT( 0, input->numVertexes );
{
stateGroup_t sg = R_StateBeginGroup();
R_SetCull( input->shader->cullType );
GL_State( GLS_DEFAULT );
R_BindAnimatedImage( &tess.xstages[0]->bundle[0], GL_TEXTURE0 );
R_BindAnimatedImage( &tess.xstages[0]->bundle[1], GL_TEXTURE1 );
R_StateSetTextureEnvMode( r_lightmap->integer ? GL_REPLACE : GL_MODULATE, GL_TEXTURE1 );
R_StateRestorePriorGroupStates( sg );
R_DrawElements( input->numIndexes, input->indexes );
if ( tess.dlightBits && tess.shader->sort <= SS_OPAQUE )
sg = ProjectDlightTexture( sg );
if( tess.fogNum && tess.shader->fogPass )
sg = RB_FogPass( sg );
}
if( GLEW_EXT_compiled_vertex_array )
glUnlockArraysEXT();
glPopClientAttrib();
GLimp_LogComment( 1, "END RB_StageIteratorLightmappedMultitexture( %s )", input->shader->name );
}
/*
** RB_EndSurface
*/
void RB_EndSurface( void )
{
shaderCommands_t *input;
input = &tess;
if( input->numIndexes == 0 )
return;
if( input->indexes[SHADER_MAX_INDEXES-1] != 0 )
ri.Error( ERR_DROP, "RB_EndSurface() - SHADER_MAX_INDEXES hit" );
if( input->xyz[SHADER_MAX_VERTEXES-1][0] != 0 )
ri.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;
//
// update performance counters
//
backEnd.pc.c_shaders++;
backEnd.pc.c_vertexes += tess.numVertexes;
backEnd.pc.c_indexes += tess.numIndexes;
backEnd.pc.c_totalIndexes += tess.numIndexes * tess.numPasses;
//
// 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;
}
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