void Terrain_DrawFace( brush_t *brush, terrainFace_t *terraface ) {
terrainMesh_t *pm;
terravert_t a0;
terravert_t a1;
terravert_t a2;
pm = brush->pTerrain;
Terrain_GetTriangle( pm, terraface->index, &a0, &a1, &a2 );
qglBindTexture( GL_TEXTURE_2D, terraface->texture->texture_number );
qglBegin( GL_TRIANGLES );
// first tri
qglColor4fv( a0.rgba );
qglTexCoord2fv( a0.tc );
qglVertex3fv( a0.xyz );
qglColor4fv( a1.rgba );
qglTexCoord2fv( a1.tc );
qglVertex3fv( a1.xyz );
qglColor4fv( a2.rgba );
qglTexCoord2fv( a2.tc );
qglVertex3fv( a2.xyz );
qglEnd ();
}
/*
** GL_SetDefaultState
*/
void GL_SetDefaultState( void )
{
qglClearColor (1.0f, 0.0f, 0.5f, 0.5f);
qglCullFace(GL_FRONT);
qglEnable(GL_TEXTURE_2D);
qglEnable(GL_ALPHA_TEST);
qglAlphaFunc(GL_GREATER, 0.666f);
qglDisable (GL_DEPTH_TEST);
qglDisable (GL_CULL_FACE);
qglDisable (GL_BLEND);
qglColor4fv(colorWhite);
qglPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
qglShadeModel (GL_FLAT);
GL_TextureMode( gl_texturemode->string );
GL_TextureAlphaMode( gl_texturealphamode->string );
GL_TextureSolidMode( gl_texturesolidmode->string );
qglTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl_filter_min);
qglTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, gl_filter_max);
qglTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
qglTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
qglBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
GL_TexEnv( GL_REPLACE );
if ( qglPointParameterfEXT && FLOAT_NE_ZERO(gl_ext_pointparameters->value))
{
float attenuations[3];
attenuations[0] = gl_particle_att_a->value;
attenuations[1] = gl_particle_att_b->value;
attenuations[2] = gl_particle_att_c->value;
qglEnable( GL_POINT_SMOOTH );
qglPointParameterfEXT( GL_POINT_SIZE_MIN_EXT, gl_particle_min_size->value );
qglPointParameterfEXT( GL_POINT_SIZE_MAX_EXT, gl_particle_max_size->value );
qglPointParameterfvEXT( GL_DISTANCE_ATTENUATION_EXT, attenuations );
}
gl_swapinterval->modified = true;
GL_UpdateSwapInterval();
}
//Water caustics
void EmitCausticPolys (const glpoly_t *p)
{
int i, nv;
float txm, tym;
const float *v;
txm = (float)cos(r_newrefdef.time*0.3f) * 0.3f;
tym = (float)sin(r_newrefdef.time*-0.3f) * 0.6f;
GL_SelectTexture(1);
qglDisable(GL_TEXTURE_2D);
GL_SelectTexture(0);
qglEnable(GL_BLEND);
qglBlendFunc(GL_ZERO, GL_SRC_COLOR);
qglColor4f (1, 1, 1, 0.275f);
GL_Bind(r_caustictexture->texnum);
v = p->verts[0];
nv = p->numverts;
qglBegin (GL_POLYGON);
for (i = 0; i < nv; i++, v += VERTEXSIZE) {
qglTexCoord2f (v[3]+txm, v[4]+tym);
qglVertex3fv (v);
}
qglEnd();
qglBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
qglColor4fv(colorWhite);
qglDisable(GL_BLEND);
GL_SelectTexture(1);
qglEnable(GL_TEXTURE_2D);
GL_SelectTexture(0);
}
/*
================
glBox
================
*/
void glBox(idVec4 &color, idVec3 &point, float size) {
idVec3 mins(point);
idVec3 maxs(point);
mins[0] -= size;
mins[1] += size;
mins[2] -= size;
maxs[0] += size;
maxs[1] -= size;
maxs[2] += size;
idVec4 saveColor;
qglGetFloatv(GL_CURRENT_COLOR, saveColor.ToFloatPtr());
qglColor3fv( color.ToFloatPtr() );
qglBegin(GL_LINE_LOOP);
qglVertex3f(mins[0],mins[1],mins[2]);
qglVertex3f(maxs[0],mins[1],mins[2]);
qglVertex3f(maxs[0],maxs[1],mins[2]);
qglVertex3f(mins[0],maxs[1],mins[2]);
qglEnd();
qglBegin(GL_LINE_LOOP);
qglVertex3f(mins[0],mins[1],maxs[2]);
qglVertex3f(maxs[0],mins[1],maxs[2]);
qglVertex3f(maxs[0],maxs[1],maxs[2]);
qglVertex3f(mins[0],maxs[1],maxs[2]);
qglEnd();
qglBegin(GL_LINES);
qglVertex3f(mins[0],mins[1],mins[2]);
qglVertex3f(mins[0],mins[1],maxs[2]);
qglVertex3f(mins[0],maxs[1],maxs[2]);
qglVertex3f(mins[0],maxs[1],mins[2]);
qglVertex3f(maxs[0],mins[1],mins[2]);
qglVertex3f(maxs[0],mins[1],maxs[2]);
qglVertex3f(maxs[0],maxs[1],maxs[2]);
qglVertex3f(maxs[0],maxs[1],mins[2]);
qglEnd();
qglColor4fv(saveColor.ToFloatPtr());
}
/*
================
DrawTris
Draws triangle outlines for debugging
================
*/
static void DrawTris( shaderCommands_t *input ) {
char *s = r_trisColor->string;
vec4_t trisColor = { 1, 1, 1, 1 };
unsigned int stateBits = 0;
GL_Bind( tr.whiteImage );
if ( *s == '0' && ( *( s + 1 ) == 'x' || *( s + 1 ) == 'X' ) ) {
s += 2;
if ( Q_IsHexColorString( s ) ) {
trisColor[0] = ( (float)( gethex( *( s ) ) * 16 + gethex( *( s + 1 ) ) ) ) / 255.00;
trisColor[1] = ( (float)( gethex( *( s + 2 ) ) * 16 + gethex( *( s + 3 ) ) ) ) / 255.00;
trisColor[2] = ( (float)( gethex( *( s + 4 ) ) * 16 + gethex( *( s + 5 ) ) ) ) / 255.00;
if ( Q_HexColorStringHasAlpha( s ) ) {
trisColor[3] = ( (float)( gethex( *( s + 6 ) ) * 16 + gethex( *( s + 7 ) ) ) ) / 255.00;
}
}
} else {
int i;
char *token;
for ( i = 0 ; i < 4 ; i++ ) {
token = COM_Parse( &s );
if ( token ) {
trisColor[i] = atof( token );
} else {
trisColor[i] = 1.f;
}
}
if ( !trisColor[3] ) {
trisColor[3] = 1.f;
}
}
if ( trisColor[3] < 1.f ) {
stateBits |= ( GLS_SRCBLEND_SRC_ALPHA | GLS_DSTBLEND_ONE_MINUS_SRC_ALPHA );
}
qglColor4fv( trisColor );
// ydnar r_showtris 2
if ( r_showtris->integer == 2 ) {
stateBits |= ( GLS_POLYMODE_LINE | GLS_DEPTHMASK_TRUE );
GL_State( stateBits );
qglDepthRange( 0, 0 );
}
#ifdef CELSHADING_HACK
else if ( r_showtris->integer == 3 ) {
stateBits |= ( GLS_POLYMODE_LINE | GLS_DEPTHMASK_TRUE );
GL_State( stateBits );
qglEnable( GL_POLYGON_OFFSET_LINE );
qglPolygonOffset( 4.0, 0.5 );
qglLineWidth( 5.0 );
}
#endif
else
{
stateBits |= ( GLS_POLYMODE_LINE );
GL_State( stateBits );
qglEnable( GL_POLYGON_OFFSET_LINE );
qglPolygonOffset( r_offsetFactor->value, r_offsetUnits->value );
}
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 );
qglDisable( GL_POLYGON_OFFSET_LINE );
}
/*
==================
RB_ARB_DrawInteraction
backEnd.vLight
backEnd.depthFunc must be equal for alpha tested surfaces to work right,
it is set to lessThan for blended transparent surfaces
==================
*/
static void RB_ARB_DrawInteraction( const drawInteraction_t *din ) {
const drawSurf_t *surf = din->surf;
const srfTriangles_t *tri = din->surf->geo;
// set the vertex arrays, which may not all be enabled on a given pass
idDrawVert *ac = (idDrawVert *)vertexCache.Position( tri->ambientCache );
qglVertexPointer( 3, GL_FLOAT, sizeof( idDrawVert ), ac->xyz.ToFloatPtr() );
GL_SelectTexture( 0 );
qglTexCoordPointer( 2, GL_FLOAT, sizeof( idDrawVert ), (void *)&ac->st );
//-----------------------------------------------------
//
// bump / falloff
//
//-----------------------------------------------------
// render light falloff * bumpmap lighting
//
// draw light falloff to the alpha channel
//
GL_State( GLS_COLORMASK | GLS_DEPTHMASK | backEnd.depthFunc );
qglColor3f( 1, 1, 1 );
qglDisableClientState( GL_TEXTURE_COORD_ARRAY );
qglEnable( GL_TEXTURE_GEN_S );
qglTexGenfv( GL_S, GL_OBJECT_PLANE, din->lightProjection[3].ToFloatPtr() );
qglTexCoord2f( 0, 0.5 );
// ATI R100 can't do partial texgens
#define NO_MIXED_TEXGEN
#ifdef NO_MIXED_TEXGEN
idVec4 plane;
plane[0] = 0;
plane[1] = 0;
plane[2] = 0;
plane[3] = 0.5;
qglEnable( GL_TEXTURE_GEN_T );
qglTexGenfv( GL_T, GL_OBJECT_PLANE, plane.ToFloatPtr() );
plane[0] = 0;
plane[1] = 0;
plane[2] = 0;
plane[3] = 1;
qglEnable( GL_TEXTURE_GEN_Q );
qglTexGenfv( GL_Q, GL_OBJECT_PLANE, plane.ToFloatPtr() );
#endif
din->lightFalloffImage->Bind();
// draw it
RB_DrawElementsWithCounters( tri );
qglDisable( GL_TEXTURE_GEN_S );
#ifdef NO_MIXED_TEXGEN
qglDisable( GL_TEXTURE_GEN_T );
qglDisable( GL_TEXTURE_GEN_Q );
#endif
#if 0
GL_State( GLS_SRCBLEND_ONE | GLS_DSTBLEND_ZERO | GLS_DEPTHMASK
| backEnd.depthFunc );
// the texccords are the non-normalized vector towards the light origin
GL_SelectTexture( 0 );
globalImages->normalCubeMapImage->Bind();
qglEnableClientState( GL_TEXTURE_COORD_ARRAY );
qglTexCoordPointer( 3, GL_FLOAT, sizeof( lightingCache_t ), ((lightingCache_t *)vertexCache.Position(tri->lightingCache))->localLightVector.ToFloatPtr() );
// draw it
RB_DrawElementsWithCounters( tri );
return;
#endif
// we can't do bump mapping with standard calls, so skip it
if ( glConfig.envDot3Available && glConfig.cubeMapAvailable ) {
//
// draw the bump map result onto the alpha channel
//
GL_State( GLS_SRCBLEND_DST_ALPHA | GLS_DSTBLEND_ZERO | GLS_COLORMASK | GLS_DEPTHMASK
| backEnd.depthFunc );
// texture 0 will be the per-surface bump map
GL_SelectTexture( 0 );
qglEnableClientState( GL_TEXTURE_COORD_ARRAY );
// FIXME: matrix work! RB_BindStageTexture( surfaceRegs, &surfaceStage->texture, surf );
din->bumpImage->Bind();
// texture 1 is the normalization cube map
// the texccords are the non-normalized vector towards the light origin
GL_SelectTexture( 1 );
if ( din->ambientLight ) {
globalImages->ambientNormalMap->Bind(); // fixed value
} else {
globalImages->normalCubeMapImage->Bind();
}
qglEnableClientState( GL_TEXTURE_COORD_ARRAY );
qglTexCoordPointer( 3, GL_FLOAT, sizeof( lightingCache_t ), ((lightingCache_t *)vertexCache.Position(tri->lightingCache))->localLightVector.ToFloatPtr() );
// I just want alpha = Dot( texture0, texture1 )
GL_TexEnv( GL_COMBINE_ARB );
qglTexEnvi( GL_TEXTURE_ENV, GL_COMBINE_RGB_ARB, GL_DOT3_RGBA_ARB );
qglTexEnvi( GL_TEXTURE_ENV, GL_SOURCE0_RGB_ARB, GL_TEXTURE );
qglTexEnvi( GL_TEXTURE_ENV, GL_SOURCE1_RGB_ARB, GL_PREVIOUS_ARB );
qglTexEnvi( GL_TEXTURE_ENV, GL_OPERAND0_RGB_ARB, GL_SRC_COLOR );
qglTexEnvi( GL_TEXTURE_ENV, GL_OPERAND1_RGB_ARB, GL_SRC_COLOR );
qglTexEnvi( GL_TEXTURE_ENV, GL_RGB_SCALE_ARB, 1 );
qglTexEnvi( GL_TEXTURE_ENV, GL_ALPHA_SCALE, 1 );
// draw it
RB_DrawElementsWithCounters( tri );
GL_TexEnv( GL_MODULATE );
globalImages->BindNull();
qglDisableClientState( GL_TEXTURE_COORD_ARRAY );
GL_SelectTexture( 0 );
// RB_FinishStageTexture( &surfaceStage->texture, surf );
}
//-----------------------------------------------------
//
// projected light / surface color for diffuse maps
//
//-----------------------------------------------------
// don't trash alpha
GL_State( GLS_SRCBLEND_DST_ALPHA | GLS_DSTBLEND_ONE | GLS_ALPHAMASK | GLS_DEPTHMASK
| backEnd.depthFunc );
// texture 0 will get the surface color texture
GL_SelectTexture( 0 );
// select the vertex color source
if ( din->vertexColor == SVC_IGNORE ) {
qglColor4fv( din->diffuseColor.ToFloatPtr() );
} else {
// FIXME: does this not get diffuseColor blended in?
qglColorPointer( 4, GL_UNSIGNED_BYTE, sizeof( idDrawVert ), (void *)&ac->color );
qglEnableClientState( GL_COLOR_ARRAY );
if ( din->vertexColor == SVC_INVERSE_MODULATE ) {
GL_TexEnv( GL_COMBINE_ARB );
qglTexEnvi( GL_TEXTURE_ENV, GL_COMBINE_RGB_ARB, GL_MODULATE );
qglTexEnvi( GL_TEXTURE_ENV, GL_SOURCE0_RGB_ARB, GL_TEXTURE );
qglTexEnvi( GL_TEXTURE_ENV, GL_SOURCE1_RGB_ARB, GL_PRIMARY_COLOR_ARB );
qglTexEnvi( GL_TEXTURE_ENV, GL_OPERAND0_RGB_ARB, GL_SRC_COLOR );
qglTexEnvi( GL_TEXTURE_ENV, GL_OPERAND1_RGB_ARB, GL_ONE_MINUS_SRC_COLOR );
qglTexEnvi( GL_TEXTURE_ENV, GL_RGB_SCALE_ARB, 1 );
}
}
qglEnableClientState( GL_TEXTURE_COORD_ARRAY );
// FIXME: does this not get the texture matrix?
// RB_BindStageTexture( surfaceRegs, &surfaceStage->texture, surf );
din->diffuseImage->Bind();
// texture 1 will get the light projected texture
GL_SelectTexture( 1 );
qglDisableClientState( GL_TEXTURE_COORD_ARRAY );
qglEnable( GL_TEXTURE_GEN_S );
qglEnable( GL_TEXTURE_GEN_T );
qglEnable( GL_TEXTURE_GEN_Q );
qglTexGenfv( GL_S, GL_OBJECT_PLANE, din->lightProjection[0].ToFloatPtr() );
qglTexGenfv( GL_T, GL_OBJECT_PLANE, din->lightProjection[1].ToFloatPtr() );
qglTexGenfv( GL_Q, GL_OBJECT_PLANE, din->lightProjection[2].ToFloatPtr() );
din->lightImage->Bind();
// draw it
RB_DrawElementsWithCounters( tri );
qglDisable( GL_TEXTURE_GEN_S );
qglDisable( GL_TEXTURE_GEN_T );
qglDisable( GL_TEXTURE_GEN_Q );
globalImages->BindNull();
GL_SelectTexture( 0 );
if ( din->vertexColor != SVC_IGNORE ) {
qglDisableClientState( GL_COLOR_ARRAY );
GL_TexEnv( GL_MODULATE );
}
// RB_FinishStageTexture( &surfaceStage->texture, surf );
}
/*
==================
RB_STD_T_RenderShaderPasses
This is also called for the generated 2D rendering
==================
*/
void RB_STD_T_RenderShaderPasses( const drawSurf_t *surf ) {
int stage;
const idMaterial *shader;
const shaderStage_t *pStage;
const float *regs;
float color[4];
const srfTriangles_t *tri;
tri = surf->geo;
shader = surf->material;
if ( !shader->HasAmbient() ) {
return;
}
if ( shader->IsPortalSky() ) {
return;
}
// change the matrix if needed
if ( surf->space != backEnd.currentSpace ) {
qglLoadMatrixf( surf->space->modelViewMatrix );
backEnd.currentSpace = surf->space;
RB_SetProgramEnvironmentSpace();
}
// change the scissor if needed
if ( r_useScissor.GetBool() && !backEnd.currentScissor.Equals( surf->scissorRect ) ) {
backEnd.currentScissor = surf->scissorRect;
qglScissor( backEnd.viewDef->viewport.x1 + backEnd.currentScissor.x1,
backEnd.viewDef->viewport.y1 + backEnd.currentScissor.y1,
backEnd.currentScissor.x2 + 1 - backEnd.currentScissor.x1,
backEnd.currentScissor.y2 + 1 - backEnd.currentScissor.y1 );
}
// some deforms may disable themselves by setting numIndexes = 0
if ( !tri->numIndexes ) {
return;
}
if ( !tri->ambientCache ) {
common->Printf( "RB_T_RenderShaderPasses: !tri->ambientCache\n" );
return;
}
// get the expressions for conditionals / color / texcoords
regs = surf->shaderRegisters;
// set face culling appropriately
GL_Cull( shader->GetCullType() );
// set polygon offset if necessary
if ( shader->TestMaterialFlag(MF_POLYGONOFFSET) ) {
qglEnable( GL_POLYGON_OFFSET_FILL );
qglPolygonOffset( r_offsetFactor.GetFloat(), r_offsetUnits.GetFloat() * shader->GetPolygonOffset() );
}
if ( surf->space->weaponDepthHack ) {
RB_EnterWeaponDepthHack();
}
if ( surf->space->modelDepthHack != 0.0f ) {
RB_EnterModelDepthHack( surf->space->modelDepthHack );
}
idDrawVert *ac = (idDrawVert *)vertexCache.Position( tri->ambientCache );
qglVertexPointer( 3, GL_FLOAT, sizeof( idDrawVert ), ac->xyz.ToFloatPtr() );
qglTexCoordPointer( 2, GL_FLOAT, sizeof( idDrawVert ), reinterpret_cast<void *>(&ac->st) );
for ( stage = 0; stage < shader->GetNumStages() ; stage++ ) {
pStage = shader->GetStage(stage);
// check the enable condition
if ( regs[ pStage->conditionRegister ] == 0 ) {
continue;
}
// skip the stages involved in lighting
if ( pStage->lighting != SL_AMBIENT ) {
continue;
}
// skip if the stage is ( GL_ZERO, GL_ONE ), which is used for some alpha masks
if ( ( pStage->drawStateBits & (GLS_SRCBLEND_BITS|GLS_DSTBLEND_BITS) ) == ( GLS_SRCBLEND_ZERO | GLS_DSTBLEND_ONE ) ) {
continue;
}
// see if we are a new-style stage
newShaderStage_t *newStage = pStage->newStage;
if ( newStage ) {
//--------------------------
//
// new style stages
//
//--------------------------
// completely skip the stage if we don't have the capability
if ( tr.backEndRenderer != BE_ARB2 ) {
continue;
}
if ( r_skipNewAmbient.GetBool() ) {
continue;
}
qglColorPointer( 4, GL_UNSIGNED_BYTE, sizeof( idDrawVert ), (void *)&ac->color );
qglVertexAttribPointerARB( 9, 3, GL_FLOAT, false, sizeof( idDrawVert ), ac->tangents[0].ToFloatPtr() );
qglVertexAttribPointerARB( 10, 3, GL_FLOAT, false, sizeof( idDrawVert ), ac->tangents[1].ToFloatPtr() );
qglNormalPointer( GL_FLOAT, sizeof( idDrawVert ), ac->normal.ToFloatPtr() );
qglEnableClientState( GL_COLOR_ARRAY );
qglEnableVertexAttribArrayARB( 9 );
qglEnableVertexAttribArrayARB( 10 );
qglEnableClientState( GL_NORMAL_ARRAY );
GL_State( pStage->drawStateBits );
qglBindProgramARB( GL_VERTEX_PROGRAM_ARB, newStage->vertexProgram );
qglEnable( GL_VERTEX_PROGRAM_ARB );
// megaTextures bind a lot of images and set a lot of parameters
if ( newStage->megaTexture ) {
newStage->megaTexture->SetMappingForSurface( tri );
idVec3 localViewer;
R_GlobalPointToLocal( surf->space->modelMatrix, backEnd.viewDef->renderView.vieworg, localViewer );
newStage->megaTexture->BindForViewOrigin( localViewer );
}
for ( int i = 0 ; i < newStage->numVertexParms ; i++ ) {
float parm[4];
parm[0] = regs[ newStage->vertexParms[i][0] ];
parm[1] = regs[ newStage->vertexParms[i][1] ];
parm[2] = regs[ newStage->vertexParms[i][2] ];
parm[3] = regs[ newStage->vertexParms[i][3] ];
qglProgramLocalParameter4fvARB( GL_VERTEX_PROGRAM_ARB, i, parm );
}
for ( int i = 0 ; i < newStage->numFragmentProgramImages ; i++ ) {
if ( newStage->fragmentProgramImages[i] ) {
GL_SelectTexture( i );
newStage->fragmentProgramImages[i]->Bind();
}
}
qglBindProgramARB( GL_FRAGMENT_PROGRAM_ARB, newStage->fragmentProgram );
qglEnable( GL_FRAGMENT_PROGRAM_ARB );
// draw it
RB_DrawElementsWithCounters( tri );
for ( int i = 1 ; i < newStage->numFragmentProgramImages ; i++ ) {
if ( newStage->fragmentProgramImages[i] ) {
GL_SelectTexture( i );
globalImages->BindNull();
}
}
if ( newStage->megaTexture ) {
newStage->megaTexture->Unbind();
}
GL_SelectTexture( 0 );
qglDisable( GL_VERTEX_PROGRAM_ARB );
qglDisable( GL_FRAGMENT_PROGRAM_ARB );
// Fixme: Hack to get around an apparent bug in ATI drivers. Should remove as soon as it gets fixed.
qglBindProgramARB( GL_VERTEX_PROGRAM_ARB, 0 );
qglDisableClientState( GL_COLOR_ARRAY );
qglDisableVertexAttribArrayARB( 9 );
qglDisableVertexAttribArrayARB( 10 );
qglDisableClientState( GL_NORMAL_ARRAY );
continue;
}
//--------------------------
//
// old style stages
//
//--------------------------
// set the color
color[0] = regs[ pStage->color.registers[0] ];
color[1] = regs[ pStage->color.registers[1] ];
color[2] = regs[ pStage->color.registers[2] ];
color[3] = regs[ pStage->color.registers[3] ];
// skip the entire stage if an add would be black
if ( ( pStage->drawStateBits & (GLS_SRCBLEND_BITS|GLS_DSTBLEND_BITS) ) == ( GLS_SRCBLEND_ONE | GLS_DSTBLEND_ONE )
&& color[0] <= 0 && color[1] <= 0 && color[2] <= 0 ) {
continue;
}
// skip the entire stage if a blend would be completely transparent
if ( ( pStage->drawStateBits & (GLS_SRCBLEND_BITS|GLS_DSTBLEND_BITS) ) == ( GLS_SRCBLEND_SRC_ALPHA | GLS_DSTBLEND_ONE_MINUS_SRC_ALPHA )
&& color[3] <= 0 ) {
continue;
}
// select the vertex color source
if ( pStage->vertexColor == SVC_IGNORE ) {
qglColor4fv( color );
} else {
qglColorPointer( 4, GL_UNSIGNED_BYTE, sizeof( idDrawVert ), (void *)&ac->color );
qglEnableClientState( GL_COLOR_ARRAY );
if ( pStage->vertexColor == SVC_INVERSE_MODULATE ) {
GL_TexEnv( GL_COMBINE_ARB );
qglTexEnvi( GL_TEXTURE_ENV, GL_COMBINE_RGB_ARB, GL_MODULATE );
qglTexEnvi( GL_TEXTURE_ENV, GL_SOURCE0_RGB_ARB, GL_TEXTURE );
qglTexEnvi( GL_TEXTURE_ENV, GL_SOURCE1_RGB_ARB, GL_PRIMARY_COLOR_ARB );
qglTexEnvi( GL_TEXTURE_ENV, GL_OPERAND0_RGB_ARB, GL_SRC_COLOR );
qglTexEnvi( GL_TEXTURE_ENV, GL_OPERAND1_RGB_ARB, GL_ONE_MINUS_SRC_COLOR );
qglTexEnvi( GL_TEXTURE_ENV, GL_RGB_SCALE_ARB, 1 );
}
// for vertex color and modulated color, we need to enable a second
// texture stage
if ( color[0] != 1 || color[1] != 1 || color[2] != 1 || color[3] != 1 ) {
GL_SelectTexture( 1 );
globalImages->whiteImage->Bind();
GL_TexEnv( GL_COMBINE_ARB );
qglTexEnvfv( GL_TEXTURE_ENV, GL_TEXTURE_ENV_COLOR, color );
qglTexEnvi( GL_TEXTURE_ENV, GL_COMBINE_RGB_ARB, GL_MODULATE );
qglTexEnvi( GL_TEXTURE_ENV, GL_SOURCE0_RGB_ARB, GL_PREVIOUS_ARB );
qglTexEnvi( GL_TEXTURE_ENV, GL_SOURCE1_RGB_ARB, GL_CONSTANT_ARB );
qglTexEnvi( GL_TEXTURE_ENV, GL_OPERAND0_RGB_ARB, GL_SRC_COLOR );
qglTexEnvi( GL_TEXTURE_ENV, GL_OPERAND1_RGB_ARB, GL_SRC_COLOR );
qglTexEnvi( GL_TEXTURE_ENV, GL_RGB_SCALE_ARB, 1 );
qglTexEnvi( GL_TEXTURE_ENV, GL_COMBINE_ALPHA_ARB, GL_MODULATE );
qglTexEnvi( GL_TEXTURE_ENV, GL_SOURCE0_ALPHA_ARB, GL_PREVIOUS_ARB );
qglTexEnvi( GL_TEXTURE_ENV, GL_SOURCE1_ALPHA_ARB, GL_CONSTANT_ARB );
qglTexEnvi( GL_TEXTURE_ENV, GL_OPERAND0_ALPHA_ARB, GL_SRC_ALPHA );
qglTexEnvi( GL_TEXTURE_ENV, GL_OPERAND1_ALPHA_ARB, GL_SRC_ALPHA );
qglTexEnvi( GL_TEXTURE_ENV, GL_ALPHA_SCALE, 1 );
GL_SelectTexture( 0 );
}
}
// bind the texture
RB_BindVariableStageImage( &pStage->texture, regs );
// set the state
GL_State( pStage->drawStateBits );
RB_PrepareStageTexturing( pStage, surf, ac );
// draw it
RB_DrawElementsWithCounters( tri );
RB_FinishStageTexturing( pStage, surf, ac );
if ( pStage->vertexColor != SVC_IGNORE ) {
qglDisableClientState( GL_COLOR_ARRAY );
GL_SelectTexture( 1 );
GL_TexEnv( GL_MODULATE );
globalImages->BindNull();
GL_SelectTexture( 0 );
GL_TexEnv( GL_MODULATE );
}
}
// reset polygon offset
if ( shader->TestMaterialFlag(MF_POLYGONOFFSET) ) {
qglDisable( GL_POLYGON_OFFSET_FILL );
}
if ( surf->space->weaponDepthHack || surf->space->modelDepthHack != 0.0f ) {
RB_LeaveDepthHack();
}
}
/*
==================
RB_T_FillDepthBuffer
==================
*/
void RB_T_FillDepthBuffer( const drawSurf_t *surf ) {
int stage;
const idMaterial *shader;
const shaderStage_t *pStage;
const float *regs;
float color[4];
const srfTriangles_t *tri;
tri = surf->geo;
shader = surf->material;
// update the clip plane if needed
if ( backEnd.viewDef->numClipPlanes && surf->space != backEnd.currentSpace ) {
GL_SelectTexture( 1 );
idPlane plane;
R_GlobalPlaneToLocal( surf->space->modelMatrix, backEnd.viewDef->clipPlanes[0], plane );
plane[3] += 0.5; // the notch is in the middle
qglTexGenfv( GL_S, GL_OBJECT_PLANE, plane.ToFloatPtr() );
GL_SelectTexture( 0 );
}
if ( !shader->IsDrawn() ) {
return;
}
// some deforms may disable themselves by setting numIndexes = 0
if ( !tri->numIndexes ) {
return;
}
// translucent surfaces don't put anything in the depth buffer and don't
// test against it, which makes them fail the mirror clip plane operation
if ( shader->Coverage() == MC_TRANSLUCENT ) {
return;
}
if ( !tri->ambientCache ) {
common->Printf( "RB_T_FillDepthBuffer: !tri->ambientCache\n" );
return;
}
// get the expressions for conditionals / color / texcoords
regs = surf->shaderRegisters;
// if all stages of a material have been conditioned off, don't do anything
for ( stage = 0; stage < shader->GetNumStages() ; stage++ ) {
pStage = shader->GetStage(stage);
// check the stage enable condition
if ( regs[ pStage->conditionRegister ] != 0 ) {
break;
}
}
if ( stage == shader->GetNumStages() ) {
return;
}
// set polygon offset if necessary
if ( shader->TestMaterialFlag(MF_POLYGONOFFSET) ) {
qglEnable( GL_POLYGON_OFFSET_FILL );
qglPolygonOffset( r_offsetFactor.GetFloat(), r_offsetUnits.GetFloat() * shader->GetPolygonOffset() );
}
// subviews will just down-modulate the color buffer by overbright
if ( shader->GetSort() == SS_SUBVIEW ) {
GL_State( GLS_SRCBLEND_DST_COLOR | GLS_DSTBLEND_ZERO | GLS_DEPTHFUNC_LESS );
color[0] =
color[1] =
color[2] = ( 1.0 / backEnd.overBright );
color[3] = 1;
} else {
// others just draw black
color[0] = 0;
color[1] = 0;
color[2] = 0;
color[3] = 1;
}
idDrawVert *ac = (idDrawVert *)vertexCache.Position( tri->ambientCache );
qglVertexPointer( 3, GL_FLOAT, sizeof( idDrawVert ), ac->xyz.ToFloatPtr() );
qglTexCoordPointer( 2, GL_FLOAT, sizeof( idDrawVert ), reinterpret_cast<void *>(&ac->st) );
bool drawSolid = false;
if ( shader->Coverage() == MC_OPAQUE ) {
drawSolid = true;
}
// we may have multiple alpha tested stages
if ( shader->Coverage() == MC_PERFORATED ) {
// if the only alpha tested stages are condition register omitted,
// draw a normal opaque surface
bool didDraw = false;
qglEnable( GL_ALPHA_TEST );
// perforated surfaces may have multiple alpha tested stages
for ( stage = 0; stage < shader->GetNumStages() ; stage++ ) {
pStage = shader->GetStage(stage);
if ( !pStage->hasAlphaTest ) {
continue;
}
// check the stage enable condition
if ( regs[ pStage->conditionRegister ] == 0 ) {
continue;
}
// if we at least tried to draw an alpha tested stage,
// we won't draw the opaque surface
didDraw = true;
// set the alpha modulate
color[3] = regs[ pStage->color.registers[3] ];
// skip the entire stage if alpha would be black
if ( color[3] <= 0 ) {
continue;
}
qglColor4fv( color );
qglAlphaFunc( GL_GREATER, regs[ pStage->alphaTestRegister ] );
// bind the texture
pStage->texture.image->Bind();
// set texture matrix and texGens
RB_PrepareStageTexturing( pStage, surf, ac );
// draw it
RB_DrawElementsWithCounters( tri );
RB_FinishStageTexturing( pStage, surf, ac );
}
qglDisable( GL_ALPHA_TEST );
if ( !didDraw ) {
drawSolid = true;
}
}
// draw the entire surface solid
if ( drawSolid ) {
qglColor4fv( color );
globalImages->whiteImage->Bind();
// draw it
RB_DrawElementsWithCounters( tri );
}
// reset polygon offset
if ( shader->TestMaterialFlag(MF_POLYGONOFFSET) ) {
qglDisable( GL_POLYGON_OFFSET_FILL );
}
// reset blending
if ( shader->GetSort() == SS_SUBVIEW ) {
GL_State( GLS_DEPTHFUNC_LESS );
}
}
/*
=====================
RB_BlendLight
Dual texture together the falloff and projection texture with a blend
mode to the framebuffer, instead of interacting with the surface texture
=====================
*/
static void RB_BlendLight( const drawSurf_t *drawSurfs, const drawSurf_t *drawSurfs2 ) {
const idMaterial *lightShader;
const shaderStage_t *stage;
int i;
const float *regs;
if ( !drawSurfs ) {
return;
}
if ( r_skipBlendLights.GetBool() ) {
return;
}
lightShader = backEnd.vLight->lightShader;
regs = backEnd.vLight->shaderRegisters;
// texture 1 will get the falloff texture
GL_SelectTexture( 1 );
qglDisableClientState( GL_TEXTURE_COORD_ARRAY );
qglEnable( GL_TEXTURE_GEN_S );
qglTexCoord2f( 0, 0.5 );
backEnd.vLight->falloffImage->Bind();
// texture 0 will get the projected texture
GL_SelectTexture( 0 );
qglDisableClientState( GL_TEXTURE_COORD_ARRAY );
qglEnable( GL_TEXTURE_GEN_S );
qglEnable( GL_TEXTURE_GEN_T );
qglEnable( GL_TEXTURE_GEN_Q );
for ( i = 0 ; i < lightShader->GetNumStages() ; i++ ) {
stage = lightShader->GetStage(i);
if ( !regs[ stage->conditionRegister ] ) {
continue;
}
GL_State( GLS_DEPTHMASK | stage->drawStateBits | GLS_DEPTHFUNC_EQUAL );
GL_SelectTexture( 0 );
stage->texture.image->Bind();
if ( stage->texture.hasMatrix ) {
RB_LoadShaderTextureMatrix( regs, &stage->texture );
}
// get the modulate values from the light, including alpha, unlike normal lights
backEnd.lightColor[0] = regs[ stage->color.registers[0] ];
backEnd.lightColor[1] = regs[ stage->color.registers[1] ];
backEnd.lightColor[2] = regs[ stage->color.registers[2] ];
backEnd.lightColor[3] = regs[ stage->color.registers[3] ];
qglColor4fv( backEnd.lightColor );
RB_RenderDrawSurfChainWithFunction( drawSurfs, RB_T_BlendLight );
RB_RenderDrawSurfChainWithFunction( drawSurfs2, RB_T_BlendLight );
if ( stage->texture.hasMatrix ) {
GL_SelectTexture( 0 );
qglMatrixMode( GL_TEXTURE );
qglLoadIdentity();
qglMatrixMode( GL_MODELVIEW );
}
}
GL_SelectTexture( 1 );
qglDisable( GL_TEXTURE_GEN_S );
globalImages->BindNull();
GL_SelectTexture( 0 );
qglDisable( GL_TEXTURE_GEN_S );
qglDisable( GL_TEXTURE_GEN_T );
qglDisable( GL_TEXTURE_GEN_Q );
}
void DrawTerrain( terrainMesh_t *pm, bool bPoints, bool bShade ) {
int i;
int w;
int h;
int x;
int y;
//int n;
//float x1;
//float y1;
float scale_x;
float scale_y;
//vec3_t pSelectedPoints[ MAX_TERRA_POINTS ];
//int nIndex;
terravert_t a0;
terravert_t a1;
terravert_t a2;
terravert_t b0;
terravert_t b1;
terravert_t b2;
terrainVert_t *vert;
qtexture_t *texture;
h = pm->height - 1;
w = pm->width - 1;
scale_x = pm->scale_x;
scale_y = pm->scale_y;
qglShadeModel (GL_SMOOTH);
if ( bShade ) {
for( i = 0; i < pm->numtextures; i++ ) {
texture = pm->textures[ i ];
qglBindTexture( GL_TEXTURE_2D, texture->texture_number );
vert = pm->heightmap;
for( y = 0; y < h; y++ ) {
qglBegin( GL_TRIANGLES );
for( x = 0; x < w; x++, vert++ ) {
Terrain_GetTriangles( pm, x, y, &a0, &a1, &a2, &b0, &b1, &b2, texture );
// first tri
if ( a0.rgba[ 3 ] || a1.rgba[ 3 ] || a2.rgba[ 3 ] ) {
qglColor4fv( a0.rgba );
qglTexCoord2fv( a0.tc );
qglVertex3fv( a0.xyz );
qglColor4fv( a1.rgba );
qglTexCoord2fv( a1.tc );
qglVertex3fv( a1.xyz );
qglColor4fv( a2.rgba );
qglTexCoord2fv( a2.tc );
qglVertex3fv( a2.xyz );
}
// second tri
if ( b0.rgba[ 3 ] || b1.rgba[ 3 ] || b2.rgba[ 3 ] ) {
qglColor4fv( b0.rgba );
qglTexCoord2fv( b0.tc );
qglVertex3fv( b0.xyz );
qglColor4fv( b1.rgba );
qglTexCoord2fv( b1.tc );
qglVertex3fv( b1.xyz );
qglColor4fv( b2.rgba );
qglTexCoord2fv( b2.tc );
qglVertex3fv( b2.xyz );
}
}
qglEnd ();
}
}
} else {
for( i = 0; i < pm->numtextures; i++ ) {
texture = pm->textures[ i ];
qglBindTexture( GL_TEXTURE_2D, texture->texture_number );
vert = pm->heightmap;
for( y = 0; y < h; y++ ) {
qglBegin( GL_TRIANGLES );
for( x = 0; x < w; x++, vert++ ) {
Terrain_GetTriangles( pm, x, y, &a0, &a1, &a2, &b0, &b1, &b2, texture );
// first tri
if ( a0.rgba[ 3 ] || a1.rgba[ 3 ] || a2.rgba[ 3 ] ) {
qglColor4fv( a0.rgba );
qglTexCoord2fv( a0.tc );
qglVertex3fv( a0.xyz );
qglColor4fv( a1.rgba );
qglTexCoord2fv( a1.tc );
qglVertex3fv( a1.xyz );
qglColor4fv( a2.rgba );
qglTexCoord2fv( a2.tc );
qglVertex3fv( a2.xyz );
}
// second tri
if ( b0.rgba[ 3 ] || b1.rgba[ 3 ] || b2.rgba[ 3 ] ) {
qglColor4fv( b0.rgba );
qglTexCoord2fv( b0.tc );
qglVertex3fv( b0.xyz );
qglColor4fv( b1.rgba );
qglTexCoord2fv( b1.tc );
qglVertex3fv( b1.xyz );
qglColor4fv( b2.rgba );
qglTexCoord2fv( b2.tc );
qglVertex3fv( b2.xyz );
}
}
qglEnd ();
}
}
}
qglPushAttrib( GL_CURRENT_BIT );
bool bDisabledLighting = qglIsEnabled( GL_LIGHTING );
if ( bDisabledLighting ) {
qglDisable( GL_LIGHTING );
}
#if 0
terrainVert_t *currentrow;
terrainVert_t *nextrow;
float x2;
float y2;
// Draw normals
qglDisable( GL_TEXTURE_2D );
qglDisable( GL_BLEND );
qglColor3f( 1, 1, 1 );
qglBegin( GL_LINES );
y2 = pm->origin[ 1 ];
nextrow = pm->heightmap;
for( y = 0; y < h; y++ ) {
y1 = y2;
y2 += scale_y;
x2 = pm->origin[ 0 ];
currentrow = nextrow;
nextrow = currentrow + pm->width;
for( x = 0; x < w; x++ ) {
x1 = x2;
x2 += scale_x;
// normals
qglVertex3f( x1, y1, pm->origin[ 2 ] + currentrow[ x ].height );
qglVertex3f( x1 + currentrow[ x ].normal[ 0 ] * 16.0f, y1 + currentrow[ x ].normal[ 1 ] * 16.0f, pm->origin[ 2 ] + currentrow[ x ].height + currentrow[ x ].normal[ 2 ] * 16.0f );
qglVertex3f( x2, y1, pm->origin[ 2 ] + currentrow[ x + 1 ].height );
qglVertex3f( x2 + currentrow[ x + 1 ].normal[ 0 ] * 16.0f, y1 + currentrow[ x + 1 ].normal[ 1 ] * 16.0f, pm->origin[ 2 ] + currentrow[ x + 1 ].height + currentrow[ x + 1 ].normal[ 2 ] * 16.0f );
qglVertex3f( x1, y2, pm->origin[ 2 ] + nextrow[ x ].height );
qglVertex3f( x1 + nextrow[ x ].normal[ 0 ] * 16.0f, y2 + nextrow[ x ].normal[ 1 ] * 16.0f, pm->origin[ 2 ] + nextrow[ x ].height + nextrow[ x ].normal[ 2 ] * 16.0f );
qglVertex3f( x2, y2, pm->origin[ 2 ] + nextrow[ x + 1 ].height );
qglVertex3f( x2 + nextrow[ x + 1 ].normal[ 0 ] * 16.0f, y2 + nextrow[ x + 1 ].normal[ 1 ] * 16.0f, pm->origin[ 2 ] + nextrow[ x + 1 ].height + nextrow[ x + 1 ].normal[ 2 ] * 16.0f );
}
}
qglEnd ();
qglEnable( GL_TEXTURE_2D );
#endif
#if 0
if ( bPoints && ( g_qeglobals.d_select_mode == sel_terrainpoint || g_qeglobals.d_select_mode == sel_area ) ) {
qglPointSize( 6 );
qglDisable( GL_TEXTURE_2D );
qglDisable( GL_BLEND );
qglBegin( GL_POINTS );
nIndex = 0;
qglColor4f( 1, 0, 1, 1 );
y1 = pm->origin[ 1 ];
for ( y = 0; y < pm->height; y++, y1 += pm->scale_y ) {
x1 = pm->origin[ 0 ];
for( x = 0; x < pm->width; x++, x1 += pm->scale_x ) {
// FIXME: need to not do loop lookups inside here
n = Terrain_PointInMoveList( &pm->heightmap[ x + y * pm->width ] );
if ( n >= 0 ) {
VectorSet( pSelectedPoints[ nIndex ], x1, y1, pm->heightmap[ x + y * pm->width ].height + pm->origin[ 2 ] );
nIndex++;
} else {
qglVertex3f( x1, y1, pm->origin[ 2 ] + pm->heightmap[ x + y * pm->width ].height );
}
}
}
qglEnd();
qglEnable( GL_TEXTURE_2D );
if ( nIndex > 0 ) {
qglBegin( GL_POINTS );
qglColor4f( 0, 0, 1, 1 );
while( nIndex-- > 0 ) {
qglVertex3fv( pSelectedPoints[ nIndex ] );
}
qglEnd();
}
}
#endif
if ( g_qeglobals.d_numterrapoints && ( ( g_qeglobals.d_select_mode == sel_terrainpoint ) || ( g_qeglobals.d_select_mode == sel_terraintexture ) ) ) {
#if 0
qglPointSize( 6 );
qglDisable( GL_TEXTURE_2D );
qglDisable( GL_BLEND );
qglBegin( GL_POINTS );
qglColor4f( 1, 0, 1, 1 );
for( i = 0; i < g_qeglobals.d_numterrapoints; i++ ) {
qglVertex3fv( g_qeglobals.d_terrapoints[ i ]->xyz );
}
qglEnd();
qglEnable( GL_TEXTURE_2D );
#endif
brush_t *pb;
terrainMesh_t *pm;
pm = NULL;
for( pb = active_brushes .next; pb != &active_brushes; pb = pb->next ) {
if ( pb->terrainBrush ) {
pm = pb->pTerrain;
break;
}
}
if ( pm ) {
qglDisable( GL_TEXTURE_2D );
qglBegin( GL_TRIANGLES );
qglEnable( GL_BLEND );
qglColor4f( 0.25, 0.5, 1, 0.35 );
for( i = 0; i < g_qeglobals.d_numterrapoints; i++ ) {
terravert_t a0;
terravert_t a1;
terravert_t a2;
qglColor4f( 0.25, 0.5, 1, g_qeglobals.d_terrapoints[ i ]->scale * 0.75 + 0.25 );
Terrain_GetTriangle( pm, g_qeglobals.d_terrapoints[ i ]->tri.index * 2, &a0, &a1, &a2 );
qglVertex3fv( a0.xyz );
qglVertex3fv( a1.xyz );
qglVertex3fv( a2.xyz );
Terrain_GetTriangle( pm, g_qeglobals.d_terrapoints[ i ]->tri.index * 2 + 1, &a0, &a1, &a2 );
qglVertex3fv( a0.xyz );
qglVertex3fv( a1.xyz );
qglVertex3fv( a2.xyz );
}
qglEnd();
qglDisable( GL_BLEND );
qglEnable( GL_TEXTURE_2D );
}
}
}
