/*
================
RB_StageIteratorSky
All of the visible sky triangles are in tess
Other things could be stuck in here, like birds in the sky, etc
================
*/
void RB_StageIteratorSky( void ) {
if ( r_fastsky->integer ) {
return;
}
// go through all the polygons and project them onto
// the sky box to see which blocks on each side need
// to be drawn
RB_ClipSkyPolygons( &tess );
// r_showsky will let all the sky blocks be drawn in
// front of everything to allow developers to see how
// much sky is getting sucked in
if ( r_showsky->integer ) {
qglDepthRange( 0.0, 0.0 );
} else {
qglDepthRange( 1.0, 1.0 );
}
// draw the outer skybox
if ( tess.shader->sky.outerbox[0] && tess.shader->sky.outerbox[0] != tr.defaultImage ) {
mat4_t oldmodelview;
GL_State( 0 );
//qglTranslatef (backEnd.viewParms.or.origin[0], backEnd.viewParms.or.origin[1], backEnd.viewParms.or.origin[2]);
{
// FIXME: this could be a lot cleaner
mat4_t trans, product;
Mat4Copy( glState.modelview, oldmodelview );
Mat4Translation( backEnd.viewParms.or.origin, trans );
Mat4Multiply( glState.modelview, trans, product );
GL_SetModelviewMatrix( product );
}
DrawSkyBox( tess.shader );
GL_SetModelviewMatrix( oldmodelview );
}
// generate the vertexes for all the clouds, which will be drawn
// by the generic shader routine
R_BuildCloudData( &tess );
RB_StageIteratorGeneric();
// draw the inner skybox
// back to normal depth range
qglDepthRange( 0.0, 1.0 );
// note that sky was drawn so we will draw a sun later
backEnd.skyRenderedThisView = qtrue;
}
/*
** RB_DrawSun
*/
void RB_DrawSun( float scale, shader_t *shader ) {
float size;
float dist;
vec3_t origin, vec1, vec2;
if ( !backEnd.skyRenderedThisView ) {
return;
}
//qglLoadMatrixf( backEnd.viewParms.world.modelMatrix );
//qglTranslatef (backEnd.viewParms.or.origin[0], backEnd.viewParms.or.origin[1], backEnd.viewParms.or.origin[2]);
{
// FIXME: this could be a lot cleaner
mat4_t translation, modelview;
Mat4Translation( backEnd.viewParms.or.origin, translation );
Mat4Multiply( backEnd.viewParms.world.modelMatrix, translation, modelview );
GL_SetModelviewMatrix( modelview );
}
dist = backEnd.viewParms.zFar / 1.75; // div sqrt(3)
size = dist * scale;
VectorScale( tr.sunDirection, dist, origin );
PerpendicularVector( vec1, tr.sunDirection );
CrossProduct( tr.sunDirection, vec1, vec2 );
VectorScale( vec1, size, vec1 );
VectorScale( vec2, size, vec2 );
// farthest depth range
qglDepthRange( 1.0, 1.0 );
RB_BeginSurface( shader, 0, 0 );
RB_AddQuadStamp(origin, vec1, vec2, colorWhite);
RB_EndSurface();
// back to normal depth range
qglDepthRange( 0.0, 1.0 );
}
/*
==============
RB_DrawSun
(SA) FIXME: sun should render behind clouds, so passing dark areas cover it up
==============
*/
void RB_DrawSun( float scale, shader_t *shader ) {
float size;
float dist;
vec3_t origin, vec1, vec2;
vec3_t temp;
// vec4_t color;
if ( !shader ) {
return;
}
if ( !backEnd.skyRenderedThisView ) {
return;
}
//qglLoadMatrixf( backEnd.viewParms.world.modelMatrix );
//qglTranslatef (backEnd.viewParms.or.origin[0], backEnd.viewParms.or.origin[1], backEnd.viewParms.or.origin[2]);
{
// FIXME: this could be a lot cleaner
mat4_t translation, modelview;
Mat4Translation( backEnd.viewParms.or.origin, translation );
Mat4Multiply( backEnd.viewParms.world.modelMatrix, translation, modelview );
GL_SetModelviewMatrix( modelview );
}
dist = backEnd.viewParms.zFar / 1.75; // div sqrt(3)
// (SA) shrunk the size of the sun
size = dist * scale;
VectorScale( tr.sunDirection, dist, origin );
PerpendicularVector( vec1, tr.sunDirection );
CrossProduct( tr.sunDirection, vec1, vec2 );
VectorScale( vec1, size, vec1 );
VectorScale( vec2, size, vec2 );
// farthest depth range
qglDepthRange( 1.0, 1.0 );
RB_BeginSurface( shader, 0, 0 );
// color[0] = color[1] = color[2] = color[3] = 1;
RB_AddQuadStamp(origin, vec1, vec2, colorWhite);
RB_EndSurface();
if ( r_drawSun->integer > 1 ) { // draw flare effect
// (SA) FYI: This is cheezy and was only a test so far.
// If we decide to use the flare business I will /definatly/ improve all this
// get a point a little closer
dist = dist * 0.7;
VectorScale( tr.sunDirection, dist, origin );
// and make the flare a little smaller
VectorScale( vec1, 0.5f, vec1 );
VectorScale( vec2, 0.5f, vec2 );
// add the vectors to give an 'off angle' result
VectorAdd( tr.sunDirection, backEnd.viewParms.or.axis[0], temp );
VectorNormalize( temp );
// amplify the result
origin[0] += temp[0] * 500.0;
origin[1] += temp[1] * 500.0;
origin[2] += temp[2] * 500.0;
// (SA) FIXME: todo: flare effect should render last (on top of everything else) and only when sun is in view (sun moving out of camera past degree n should start to cause flare dimming until view angle to sun is off by angle n + x.
// draw the flare
RB_BeginSurface( tr.sunflareShader_old[0], 0, 0 );
RB_AddQuadStamp( origin, vec1, vec2, colorWhite );
RB_EndSurface();
}
// back to normal depth range
qglDepthRange( 0.0, 1.0 );
}
/*
================
RB_StageIteratorSky
All of the visible sky triangles are in tess
Other things could be stuck in here, like birds in the sky, etc
================
*/
void RB_StageIteratorSky( void ) {
if ( r_fastsky->integer ) {
return;
}
// when portal sky exists, only render skybox for the portal sky scene
if ( skyboxportal && !( backEnd.refdef.rdflags & RDF_SKYBOXPORTAL ) ) {
return;
}
// does the current fog require fastsky?
if ( backEnd.viewParms.glFog.registered ) {
if ( !backEnd.viewParms.glFog.drawsky ) {
return;
}
} else if ( glfogNum > FOG_NONE ) {
if ( !glfogsettings[FOG_CURRENT].drawsky ) {
return;
}
}
backEnd.refdef.rdflags |= RDF_DRAWINGSKY;
// go through all the polygons and project them onto
// the sky box to see which blocks on each side need
// to be drawn
RB_ClipSkyPolygons( &tess );
// r_showsky will let all the sky blocks be drawn in
// front of everything to allow developers to see how
// much sky is getting sucked in
if ( r_showsky->integer ) {
qglDepthRange( 0.0, 0.0 );
} else {
qglDepthRange( 1.0, 1.0 );
}
// draw the outer skybox
if ( tess.shader->sky.outerbox[0] && tess.shader->sky.outerbox[0] != tr.defaultImage ) {
mat4_t oldmodelview;
GL_State( 0 );
//qglTranslatef( backEnd.viewParms.or.origin[0], backEnd.viewParms.or.origin[1], backEnd.viewParms.or.origin[2] );
{
// FIXME: this could be a lot cleaner
mat4_t trans, product;
Mat4Copy( glState.modelview, oldmodelview );
Mat4Translation( backEnd.viewParms.or.origin, trans );
Mat4Multiply( glState.modelview, trans, product );
GL_SetModelviewMatrix( product );
}
DrawSkyBox( tess.shader );
GL_SetModelviewMatrix( oldmodelview );
}
// generate the vertexes for all the clouds, which will be drawn
// by the generic shader routine
R_BuildCloudData( &tess );
RB_StageIteratorGeneric();
// draw the inner skybox
// Rafael - drawing inner skybox
if ( tess.shader->sky.innerbox[0] && tess.shader->sky.innerbox[0] != tr.defaultImage ) {
mat4_t oldmodelview;
GL_State( 0 );
//qglTranslatef( backEnd.viewParms.or.origin[0], backEnd.viewParms.or.origin[1], backEnd.viewParms.or.origin[2] );
{
// FIXME: this could be a lot cleaner
mat4_t trans, product;
Mat4Copy( glState.modelview, oldmodelview );
Mat4Translation( backEnd.viewParms.or.origin, trans );
Mat4Multiply( glState.modelview, trans, product );
GL_SetModelviewMatrix( product );
}
DrawSkyBoxInner( tess.shader );
GL_SetModelviewMatrix( oldmodelview );
}
// Rafael - end
// back to normal depth range
qglDepthRange( 0.0, 1.0 );
backEnd.refdef.rdflags &= ~RDF_DRAWINGSKY;
// note that sky was drawn so we will draw a sun later
backEnd.skyRenderedThisView = qtrue;
}
