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Diffstat (limited to 'ioq3-r437/src/renderer/tr_sky.c')
| -rw-r--r-- | ioq3-r437/src/renderer/tr_sky.c | 845 |
1 files changed, 0 insertions, 845 deletions
diff --git a/ioq3-r437/src/renderer/tr_sky.c b/ioq3-r437/src/renderer/tr_sky.c deleted file mode 100644 index 02624f3d..00000000 --- a/ioq3-r437/src/renderer/tr_sky.c +++ /dev/null @@ -1,845 +0,0 @@ -/* -=========================================================================== -Copyright (C) 1999-2005 Id Software, Inc. - -This file is part of Quake III Arena source code. - -Quake III Arena 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. - -Quake III Arena 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 Quake III Arena source code; if not, write to the Free Software -Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA -=========================================================================== -*/ -// tr_sky.c -#include "tr_local.h" - -#define SKY_SUBDIVISIONS 8 -#define HALF_SKY_SUBDIVISIONS (SKY_SUBDIVISIONS/2) - -static float s_cloudTexCoords[6][SKY_SUBDIVISIONS+1][SKY_SUBDIVISIONS+1][2]; -static float s_cloudTexP[6][SKY_SUBDIVISIONS+1][SKY_SUBDIVISIONS+1]; - -/* -=================================================================================== - -POLYGON TO BOX SIDE PROJECTION - -=================================================================================== -*/ - -static vec3_t sky_clip[6] = -{ - {1,1,0}, - {1,-1,0}, - {0,-1,1}, - {0,1,1}, - {1,0,1}, - {-1,0,1} -}; - -static float sky_mins[2][6], sky_maxs[2][6]; -static float sky_min, sky_max; - -/* -================ -AddSkyPolygon -================ -*/ -static void AddSkyPolygon (int nump, vec3_t vecs) -{ - int i,j; - vec3_t v, av; - float s, t, dv; - int axis; - float *vp; - // s = [0]/[2], t = [1]/[2] - static int vec_to_st[6][3] = - { - {-2,3,1}, - {2,3,-1}, - - {1,3,2}, - {-1,3,-2}, - - {-2,-1,3}, - {-2,1,-3} - - // {-1,2,3}, - // {1,2,-3} - }; - - // decide which face it maps to - VectorCopy (vec3_origin, v); - for (i=0, vp=vecs ; i<nump ; i++, vp+=3) - { - VectorAdd (vp, v, v); - } - av[0] = fabs(v[0]); - av[1] = fabs(v[1]); - av[2] = fabs(v[2]); - if (av[0] > av[1] && av[0] > av[2]) - { - if (v[0] < 0) - axis = 1; - else - axis = 0; - } - else if (av[1] > av[2] && av[1] > av[0]) - { - if (v[1] < 0) - axis = 3; - else - axis = 2; - } - else - { - if (v[2] < 0) - axis = 5; - else - axis = 4; - } - - // project new texture coords - for (i=0 ; i<nump ; i++, vecs+=3) - { - j = vec_to_st[axis][2]; - if (j > 0) - dv = vecs[j - 1]; - else - dv = -vecs[-j - 1]; - if (dv < 0.001) - continue; // don't divide by zero - j = vec_to_st[axis][0]; - if (j < 0) - s = -vecs[-j -1] / dv; - else - s = vecs[j-1] / dv; - j = vec_to_st[axis][1]; - if (j < 0) - t = -vecs[-j -1] / dv; - else - t = vecs[j-1] / dv; - - if (s < sky_mins[0][axis]) - sky_mins[0][axis] = s; - if (t < sky_mins[1][axis]) - sky_mins[1][axis] = t; - if (s > sky_maxs[0][axis]) - sky_maxs[0][axis] = s; - if (t > sky_maxs[1][axis]) - sky_maxs[1][axis] = t; - } -} - -#define ON_EPSILON 0.1f // point on plane side epsilon -#define MAX_CLIP_VERTS 64 -/* -================ -ClipSkyPolygon -================ -*/ -static void ClipSkyPolygon (int nump, vec3_t vecs, int stage) -{ - float *norm; - float *v; - qboolean front, back; - float d, e; - float dists[MAX_CLIP_VERTS]; - int sides[MAX_CLIP_VERTS]; - vec3_t newv[2][MAX_CLIP_VERTS]; - int newc[2]; - int i, j; - - if (nump > MAX_CLIP_VERTS-2) - ri.Error (ERR_DROP, "ClipSkyPolygon: MAX_CLIP_VERTS"); - if (stage == 6) - { // fully clipped, so draw it - AddSkyPolygon (nump, vecs); - return; - } - - front = back = qfalse; - norm = sky_clip[stage]; - for (i=0, v = vecs ; i<nump ; i++, v+=3) - { - d = DotProduct (v, norm); - if (d > ON_EPSILON) - { - front = qtrue; - sides[i] = SIDE_FRONT; - } - else if (d < -ON_EPSILON) - { - back = qtrue; - sides[i] = SIDE_BACK; - } - else - sides[i] = SIDE_ON; - dists[i] = d; - } - - if (!front || !back) - { // not clipped - ClipSkyPolygon (nump, vecs, stage+1); - return; - } - - // clip it - sides[i] = sides[0]; - dists[i] = dists[0]; - VectorCopy (vecs, (vecs+(i*3)) ); - newc[0] = newc[1] = 0; - - for (i=0, v = vecs ; i<nump ; i++, v+=3) - { - switch (sides[i]) - { - case SIDE_FRONT: - VectorCopy (v, newv[0][newc[0]]); - newc[0]++; - break; - case SIDE_BACK: - VectorCopy (v, newv[1][newc[1]]); - newc[1]++; - break; - case SIDE_ON: - VectorCopy (v, newv[0][newc[0]]); - newc[0]++; - VectorCopy (v, newv[1][newc[1]]); - newc[1]++; - break; - } - - if (sides[i] == SIDE_ON || sides[i+1] == SIDE_ON || sides[i+1] == sides[i]) - continue; - - d = dists[i] / (dists[i] - dists[i+1]); - for (j=0 ; j<3 ; j++) - { - e = v[j] + d*(v[j+3] - v[j]); - newv[0][newc[0]][j] = e; - newv[1][newc[1]][j] = e; - } - newc[0]++; - newc[1]++; - } - - // continue - ClipSkyPolygon (newc[0], newv[0][0], stage+1); - ClipSkyPolygon (newc[1], newv[1][0], stage+1); -} - -/* -============== -ClearSkyBox -============== -*/ -static void ClearSkyBox (void) { - int i; - - for (i=0 ; i<6 ; i++) { - sky_mins[0][i] = sky_mins[1][i] = 9999; - sky_maxs[0][i] = sky_maxs[1][i] = -9999; - } -} - -/* -================ -RB_ClipSkyPolygons -================ -*/ -void RB_ClipSkyPolygons( shaderCommands_t *input ) -{ - vec3_t p[5]; // need one extra point for clipping - int i, j; - - ClearSkyBox(); - - for ( i = 0; i < input->numIndexes; i += 3 ) - { - for (j = 0 ; j < 3 ; j++) - { - VectorSubtract( input->xyz[input->indexes[i+j]], - backEnd.viewParms.or.origin, - p[j] ); - } - ClipSkyPolygon( 3, p[0], 0 ); - } -} - -/* -=================================================================================== - -CLOUD VERTEX GENERATION - -=================================================================================== -*/ - -/* -** MakeSkyVec -** -** Parms: s, t range from -1 to 1 -*/ -static void MakeSkyVec( float s, float t, int axis, float outSt[2], vec3_t outXYZ ) -{ - // 1 = s, 2 = t, 3 = 2048 - static int st_to_vec[6][3] = - { - {3,-1,2}, - {-3,1,2}, - - {1,3,2}, - {-1,-3,2}, - - {-2,-1,3}, // 0 degrees yaw, look straight up - {2,-1,-3} // look straight down - }; - - vec3_t b; - int j, k; - float boxSize; - - boxSize = backEnd.viewParms.zFar / 1.75; // div sqrt(3) - b[0] = s*boxSize; - b[1] = t*boxSize; - b[2] = boxSize; - - for (j=0 ; j<3 ; j++) - { - k = st_to_vec[axis][j]; - if (k < 0) - { - outXYZ[j] = -b[-k - 1]; - } - else - { - outXYZ[j] = b[k - 1]; - } - } - - // avoid bilerp seam - s = (s+1)*0.5; - t = (t+1)*0.5; - if (s < sky_min) - { - s = sky_min; - } - else if (s > sky_max) - { - s = sky_max; - } - - if (t < sky_min) - { - t = sky_min; - } - else if (t > sky_max) - { - t = sky_max; - } - - t = 1.0 - t; - - - if ( outSt ) - { - outSt[0] = s; - outSt[1] = t; - } -} - -static int sky_texorder[6] = {0,2,1,3,4,5}; -static vec3_t s_skyPoints[SKY_SUBDIVISIONS+1][SKY_SUBDIVISIONS+1]; -static float s_skyTexCoords[SKY_SUBDIVISIONS+1][SKY_SUBDIVISIONS+1][2]; - -static void DrawSkySide( struct image_s *image, const int mins[2], const int maxs[2] ) -{ - int s, t; - - GL_Bind( image ); - - for ( t = mins[1]+HALF_SKY_SUBDIVISIONS; t < maxs[1]+HALF_SKY_SUBDIVISIONS; t++ ) - { - qglBegin( GL_TRIANGLE_STRIP ); - - for ( s = mins[0]+HALF_SKY_SUBDIVISIONS; s <= maxs[0]+HALF_SKY_SUBDIVISIONS; s++ ) - { - qglTexCoord2fv( s_skyTexCoords[t][s] ); - qglVertex3fv( s_skyPoints[t][s] ); - - qglTexCoord2fv( s_skyTexCoords[t+1][s] ); - qglVertex3fv( s_skyPoints[t+1][s] ); - } - - qglEnd(); - } -} - -static void DrawSkyBox( shader_t *shader ) -{ - int i; - - sky_min = 0; - sky_max = 1; - - Com_Memset( s_skyTexCoords, 0, sizeof( s_skyTexCoords ) ); - - for (i=0 ; i<6 ; i++) - { - int sky_mins_subd[2], sky_maxs_subd[2]; - int s, t; - - sky_mins[0][i] = floor( sky_mins[0][i] * HALF_SKY_SUBDIVISIONS ) / HALF_SKY_SUBDIVISIONS; - sky_mins[1][i] = floor( sky_mins[1][i] * HALF_SKY_SUBDIVISIONS ) / HALF_SKY_SUBDIVISIONS; - sky_maxs[0][i] = ceil( sky_maxs[0][i] * HALF_SKY_SUBDIVISIONS ) / HALF_SKY_SUBDIVISIONS; - sky_maxs[1][i] = ceil( sky_maxs[1][i] * HALF_SKY_SUBDIVISIONS ) / HALF_SKY_SUBDIVISIONS; - - if ( ( sky_mins[0][i] >= sky_maxs[0][i] ) || - ( sky_mins[1][i] >= sky_maxs[1][i] ) ) - { - continue; - } - - sky_mins_subd[0] = sky_mins[0][i] * HALF_SKY_SUBDIVISIONS; - sky_mins_subd[1] = sky_mins[1][i] * HALF_SKY_SUBDIVISIONS; - sky_maxs_subd[0] = sky_maxs[0][i] * HALF_SKY_SUBDIVISIONS; - sky_maxs_subd[1] = sky_maxs[1][i] * HALF_SKY_SUBDIVISIONS; - - if ( sky_mins_subd[0] < -HALF_SKY_SUBDIVISIONS ) - sky_mins_subd[0] = -HALF_SKY_SUBDIVISIONS; - else if ( sky_mins_subd[0] > HALF_SKY_SUBDIVISIONS ) - sky_mins_subd[0] = HALF_SKY_SUBDIVISIONS; - if ( sky_mins_subd[1] < -HALF_SKY_SUBDIVISIONS ) - sky_mins_subd[1] = -HALF_SKY_SUBDIVISIONS; - else if ( sky_mins_subd[1] > HALF_SKY_SUBDIVISIONS ) - sky_mins_subd[1] = HALF_SKY_SUBDIVISIONS; - - if ( sky_maxs_subd[0] < -HALF_SKY_SUBDIVISIONS ) - sky_maxs_subd[0] = -HALF_SKY_SUBDIVISIONS; - else if ( sky_maxs_subd[0] > HALF_SKY_SUBDIVISIONS ) - sky_maxs_subd[0] = HALF_SKY_SUBDIVISIONS; - if ( sky_maxs_subd[1] < -HALF_SKY_SUBDIVISIONS ) - sky_maxs_subd[1] = -HALF_SKY_SUBDIVISIONS; - else if ( sky_maxs_subd[1] > HALF_SKY_SUBDIVISIONS ) - sky_maxs_subd[1] = HALF_SKY_SUBDIVISIONS; - - // - // iterate through the subdivisions - // - for ( t = sky_mins_subd[1]+HALF_SKY_SUBDIVISIONS; t <= sky_maxs_subd[1]+HALF_SKY_SUBDIVISIONS; t++ ) - { - for ( s = sky_mins_subd[0]+HALF_SKY_SUBDIVISIONS; s <= sky_maxs_subd[0]+HALF_SKY_SUBDIVISIONS; s++ ) - { - MakeSkyVec( ( s - HALF_SKY_SUBDIVISIONS ) / ( float ) HALF_SKY_SUBDIVISIONS, - ( t - HALF_SKY_SUBDIVISIONS ) / ( float ) HALF_SKY_SUBDIVISIONS, - i, - s_skyTexCoords[t][s], - s_skyPoints[t][s] ); - } - } - - DrawSkySide( shader->sky.outerbox[sky_texorder[i]], - sky_mins_subd, - sky_maxs_subd ); - } - -} - -static void FillCloudySkySide( const int mins[2], const int maxs[2], qboolean addIndexes ) -{ - int s, t; - int vertexStart = tess.numVertexes; - int tHeight, sWidth; - - tHeight = maxs[1] - mins[1] + 1; - sWidth = maxs[0] - mins[0] + 1; - - for ( t = mins[1]+HALF_SKY_SUBDIVISIONS; t <= maxs[1]+HALF_SKY_SUBDIVISIONS; t++ ) - { - for ( s = mins[0]+HALF_SKY_SUBDIVISIONS; s <= maxs[0]+HALF_SKY_SUBDIVISIONS; s++ ) - { - VectorAdd( s_skyPoints[t][s], backEnd.viewParms.or.origin, tess.xyz[tess.numVertexes] ); - tess.texCoords[tess.numVertexes][0][0] = s_skyTexCoords[t][s][0]; - tess.texCoords[tess.numVertexes][0][1] = s_skyTexCoords[t][s][1]; - - tess.numVertexes++; - - if ( tess.numVertexes >= SHADER_MAX_VERTEXES ) - { - ri.Error( ERR_DROP, "SHADER_MAX_VERTEXES hit in FillCloudySkySide()\n" ); - } - } - } - - // only add indexes for one pass, otherwise it would draw multiple times for each pass - if ( addIndexes ) { - for ( t = 0; t < tHeight-1; t++ ) - { - for ( s = 0; s < sWidth-1; s++ ) - { - tess.indexes[tess.numIndexes] = vertexStart + s + t * ( sWidth ); - tess.numIndexes++; - tess.indexes[tess.numIndexes] = vertexStart + s + ( t + 1 ) * ( sWidth ); - tess.numIndexes++; - tess.indexes[tess.numIndexes] = vertexStart + s + 1 + t * ( sWidth ); - tess.numIndexes++; - - tess.indexes[tess.numIndexes] = vertexStart + s + ( t + 1 ) * ( sWidth ); - tess.numIndexes++; - tess.indexes[tess.numIndexes] = vertexStart + s + 1 + ( t + 1 ) * ( sWidth ); - tess.numIndexes++; - tess.indexes[tess.numIndexes] = vertexStart + s + 1 + t * ( sWidth ); - tess.numIndexes++; - } - } - } -} - -static void FillCloudBox( const shader_t *shader, int stage ) -{ - int i; - - for ( i =0; i < 6; i++ ) - { - int sky_mins_subd[2], sky_maxs_subd[2]; - int s, t; - float MIN_T; - - if ( 1 ) // FIXME? shader->sky.fullClouds ) - { - MIN_T = -HALF_SKY_SUBDIVISIONS; - - // still don't want to draw the bottom, even if fullClouds - if ( i == 5 ) - continue; - } - else - { - switch( i ) - { - case 0: - case 1: - case 2: - case 3: - MIN_T = -1; - break; - case 5: - // don't draw clouds beneath you - continue; - case 4: // top - default: - MIN_T = -HALF_SKY_SUBDIVISIONS; - break; - } - } - - sky_mins[0][i] = floor( sky_mins[0][i] * HALF_SKY_SUBDIVISIONS ) / HALF_SKY_SUBDIVISIONS; - sky_mins[1][i] = floor( sky_mins[1][i] * HALF_SKY_SUBDIVISIONS ) / HALF_SKY_SUBDIVISIONS; - sky_maxs[0][i] = ceil( sky_maxs[0][i] * HALF_SKY_SUBDIVISIONS ) / HALF_SKY_SUBDIVISIONS; - sky_maxs[1][i] = ceil( sky_maxs[1][i] * HALF_SKY_SUBDIVISIONS ) / HALF_SKY_SUBDIVISIONS; - - if ( ( sky_mins[0][i] >= sky_maxs[0][i] ) || - ( sky_mins[1][i] >= sky_maxs[1][i] ) ) - { - continue; - } - - sky_mins_subd[0] = myftol( sky_mins[0][i] * HALF_SKY_SUBDIVISIONS ); - sky_mins_subd[1] = myftol( sky_mins[1][i] * HALF_SKY_SUBDIVISIONS ); - sky_maxs_subd[0] = myftol( sky_maxs[0][i] * HALF_SKY_SUBDIVISIONS ); - sky_maxs_subd[1] = myftol( sky_maxs[1][i] * HALF_SKY_SUBDIVISIONS ); - - if ( sky_mins_subd[0] < -HALF_SKY_SUBDIVISIONS ) - sky_mins_subd[0] = -HALF_SKY_SUBDIVISIONS; - else if ( sky_mins_subd[0] > HALF_SKY_SUBDIVISIONS ) - sky_mins_subd[0] = HALF_SKY_SUBDIVISIONS; - if ( sky_mins_subd[1] < MIN_T ) - sky_mins_subd[1] = MIN_T; - else if ( sky_mins_subd[1] > HALF_SKY_SUBDIVISIONS ) - sky_mins_subd[1] = HALF_SKY_SUBDIVISIONS; - - if ( sky_maxs_subd[0] < -HALF_SKY_SUBDIVISIONS ) - sky_maxs_subd[0] = -HALF_SKY_SUBDIVISIONS; - else if ( sky_maxs_subd[0] > HALF_SKY_SUBDIVISIONS ) - sky_maxs_subd[0] = HALF_SKY_SUBDIVISIONS; - if ( sky_maxs_subd[1] < MIN_T ) - sky_maxs_subd[1] = MIN_T; - else if ( sky_maxs_subd[1] > HALF_SKY_SUBDIVISIONS ) - sky_maxs_subd[1] = HALF_SKY_SUBDIVISIONS; - - // - // iterate through the subdivisions - // - for ( t = sky_mins_subd[1]+HALF_SKY_SUBDIVISIONS; t <= sky_maxs_subd[1]+HALF_SKY_SUBDIVISIONS; t++ ) - { - for ( s = sky_mins_subd[0]+HALF_SKY_SUBDIVISIONS; s <= sky_maxs_subd[0]+HALF_SKY_SUBDIVISIONS; s++ ) - { - MakeSkyVec( ( s - HALF_SKY_SUBDIVISIONS ) / ( float ) HALF_SKY_SUBDIVISIONS, - ( t - HALF_SKY_SUBDIVISIONS ) / ( float ) HALF_SKY_SUBDIVISIONS, - i, - NULL, - s_skyPoints[t][s] ); - - s_skyTexCoords[t][s][0] = s_cloudTexCoords[i][t][s][0]; - s_skyTexCoords[t][s][1] = s_cloudTexCoords[i][t][s][1]; - } - } - - // only add indexes for first stage - FillCloudySkySide( sky_mins_subd, sky_maxs_subd, ( stage == 0 ) ); - } -} - -/* -** R_BuildCloudData -*/ -void R_BuildCloudData( shaderCommands_t *input ) -{ - int i; - shader_t *shader; - - shader = input->shader; - - assert( shader->isSky ); - - sky_min = 1.0 / 256.0f; // FIXME: not correct? - sky_max = 255.0 / 256.0f; - - // set up for drawing - tess.numIndexes = 0; - tess.numVertexes = 0; - - if ( input->shader->sky.cloudHeight ) - { - for ( i = 0; i < MAX_SHADER_STAGES; i++ ) - { - if ( !tess.xstages[i] ) { - break; - } - FillCloudBox( input->shader, i ); - } - } -} - -/* -** R_InitSkyTexCoords -** Called when a sky shader is parsed -*/ -#define SQR( a ) ((a)*(a)) -void R_InitSkyTexCoords( float heightCloud ) -{ - int i, s, t; - float radiusWorld = 4096; - float p; - float sRad, tRad; - vec3_t skyVec; - vec3_t v; - - // init zfar so MakeSkyVec works even though - // a world hasn't been bounded - backEnd.viewParms.zFar = 1024; - - for ( i = 0; i < 6; i++ ) - { - for ( t = 0; t <= SKY_SUBDIVISIONS; t++ ) - { - for ( s = 0; s <= SKY_SUBDIVISIONS; s++ ) - { - // compute vector from view origin to sky side integral point - MakeSkyVec( ( s - HALF_SKY_SUBDIVISIONS ) / ( float ) HALF_SKY_SUBDIVISIONS, - ( t - HALF_SKY_SUBDIVISIONS ) / ( float ) HALF_SKY_SUBDIVISIONS, - i, - NULL, - skyVec ); - - // compute parametric value 'p' that intersects with cloud layer - p = ( 1.0f / ( 2 * DotProduct( skyVec, skyVec ) ) ) * - ( -2 * skyVec[2] * radiusWorld + - 2 * sqrt( SQR( skyVec[2] ) * SQR( radiusWorld ) + - 2 * SQR( skyVec[0] ) * radiusWorld * heightCloud + - SQR( skyVec[0] ) * SQR( heightCloud ) + - 2 * SQR( skyVec[1] ) * radiusWorld * heightCloud + - SQR( skyVec[1] ) * SQR( heightCloud ) + - 2 * SQR( skyVec[2] ) * radiusWorld * heightCloud + - SQR( skyVec[2] ) * SQR( heightCloud ) ) ); - - s_cloudTexP[i][t][s] = p; - - // compute intersection point based on p - VectorScale( skyVec, p, v ); - v[2] += radiusWorld; - - // compute vector from world origin to intersection point 'v' - VectorNormalize( v ); - - sRad = Q_acos( v[0] ); - tRad = Q_acos( v[1] ); - - s_cloudTexCoords[i][t][s][0] = sRad; - s_cloudTexCoords[i][t][s][1] = tRad; - } - } - } -} - -//====================================================================================== - -/* -** RB_DrawSun -*/ -void RB_DrawSun( void ) { - float size; - float dist; - vec3_t origin, vec1, vec2; - vec3_t temp; - - if ( !backEnd.skyRenderedThisView ) { - return; - } - if ( !r_drawSun->integer ) { - return; - } - qglLoadMatrixf( backEnd.viewParms.world.modelMatrix ); - qglTranslatef (backEnd.viewParms.or.origin[0], backEnd.viewParms.or.origin[1], backEnd.viewParms.or.origin[2]); - - dist = backEnd.viewParms.zFar / 1.75; // div sqrt(3) - size = dist * 0.4; - - 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 ); - - // FIXME: use quad stamp - RB_BeginSurface( tr.sunShader, tess.fogNum ); - VectorCopy( origin, temp ); - VectorSubtract( temp, vec1, temp ); - VectorSubtract( temp, vec2, temp ); - VectorCopy( temp, tess.xyz[tess.numVertexes] ); - tess.texCoords[tess.numVertexes][0][0] = 0; - tess.texCoords[tess.numVertexes][0][1] = 0; - tess.vertexColors[tess.numVertexes][0] = 255; - tess.vertexColors[tess.numVertexes][1] = 255; - tess.vertexColors[tess.numVertexes][2] = 255; - tess.numVertexes++; - - VectorCopy( origin, temp ); - VectorAdd( temp, vec1, temp ); - VectorSubtract( temp, vec2, temp ); - VectorCopy( temp, tess.xyz[tess.numVertexes] ); - tess.texCoords[tess.numVertexes][0][0] = 0; - tess.texCoords[tess.numVertexes][0][1] = 1; - tess.vertexColors[tess.numVertexes][0] = 255; - tess.vertexColors[tess.numVertexes][1] = 255; - tess.vertexColors[tess.numVertexes][2] = 255; - tess.numVertexes++; - - VectorCopy( origin, temp ); - VectorAdd( temp, vec1, temp ); - VectorAdd( temp, vec2, temp ); - VectorCopy( temp, tess.xyz[tess.numVertexes] ); - tess.texCoords[tess.numVertexes][0][0] = 1; - tess.texCoords[tess.numVertexes][0][1] = 1; - tess.vertexColors[tess.numVertexes][0] = 255; - tess.vertexColors[tess.numVertexes][1] = 255; - tess.vertexColors[tess.numVertexes][2] = 255; - tess.numVertexes++; - - VectorCopy( origin, temp ); - VectorSubtract( temp, vec1, temp ); - VectorAdd( temp, vec2, temp ); - VectorCopy( temp, tess.xyz[tess.numVertexes] ); - tess.texCoords[tess.numVertexes][0][0] = 1; - tess.texCoords[tess.numVertexes][0][1] = 0; - tess.vertexColors[tess.numVertexes][0] = 255; - tess.vertexColors[tess.numVertexes][1] = 255; - tess.vertexColors[tess.numVertexes][2] = 255; - tess.numVertexes++; - - tess.indexes[tess.numIndexes++] = 0; - tess.indexes[tess.numIndexes++] = 1; - tess.indexes[tess.numIndexes++] = 2; - tess.indexes[tess.numIndexes++] = 0; - tess.indexes[tess.numIndexes++] = 2; - tess.indexes[tess.numIndexes++] = 3; - - 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; - } - - // 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 ) { - qglColor3f( tr.identityLight, tr.identityLight, tr.identityLight ); - - qglPushMatrix (); - GL_State( 0 ); - qglTranslatef (backEnd.viewParms.or.origin[0], backEnd.viewParms.or.origin[1], backEnd.viewParms.or.origin[2]); - - DrawSkyBox( tess.shader ); - - qglPopMatrix(); - } - - // 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; -} - |