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https://git.do.srb2.org/STJr/SRB2.git
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Merge branch 'shader-skywalls' into 'sal-oglshaderport'
Fix outdated sky wall code in shader branch See merge request STJr/SRB2!906
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SteelT
commit
176361de1e
1 changed files with 62 additions and 83 deletions
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@ -1079,7 +1079,7 @@ static void HWR_SplitWall(sector_t *sector, FOutVector *wallVerts, INT32 texnum,
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// HWR_DrawSkyWall
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// Draw walls into the depth buffer so that anything behind is culled properly
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static void HWR_DrawSkyWall(FOutVector *wallVerts, FSurfaceInfo *Surf, fixed_t bottom, fixed_t top)
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static void HWR_DrawSkyWall(FOutVector *wallVerts, FSurfaceInfo *Surf)
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{
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HWD.pfnSetTexture(NULL);
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// no texture
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@ -1087,9 +1087,7 @@ static void HWR_DrawSkyWall(FOutVector *wallVerts, FSurfaceInfo *Surf, fixed_t b
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wallVerts[0].t = wallVerts[1].t = 0;
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wallVerts[0].s = wallVerts[3].s = 0;
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wallVerts[2].s = wallVerts[1].s = 0;
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// set top/bottom coords
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wallVerts[2].y = wallVerts[3].y = FIXED_TO_FLOAT(top); // No real way to find the correct height of this
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wallVerts[0].y = wallVerts[1].y = FIXED_TO_FLOAT(bottom); // worldlow/bottom because it needs to cover up the lower thok barrier wall
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// this no longer sets top/bottom coords, this should be done before caling the function
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HWR_ProjectWall(wallVerts, Surf, PF_Invisible|PF_NoTexture, 255, NULL);
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// PF_Invisible so it's not drawn into the colour buffer
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// PF_NoTexture for no texture
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@ -1185,8 +1183,10 @@ static void HWR_ProcessSeg(void) // Sort of like GLWall::Process in GZDoom
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if (gr_backsector)
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{
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INT32 gr_toptexture, gr_bottomtexture;
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INT32 gr_toptexture = 0, gr_bottomtexture = 0;
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// two sided line
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boolean bothceilingssky = false; // turned on if both back and front ceilings are sky
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boolean bothfloorssky = false; // likewise, but for floors
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#ifdef ESLOPE
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SLOPEPARAMS(gr_backsector->c_slope, worldhigh, worldhighslope, gr_backsector->ceilingheight)
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@ -1199,16 +1199,22 @@ static void HWR_ProcessSeg(void) // Sort of like GLWall::Process in GZDoom
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// hack to allow height changes in outdoor areas
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// This is what gets rid of the upper textures if there should be sky
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if (gr_frontsector->ceilingpic == skyflatnum &&
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gr_backsector->ceilingpic == skyflatnum)
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if (gr_frontsector->ceilingpic == skyflatnum
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&& gr_backsector->ceilingpic == skyflatnum)
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{
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worldtop = worldhigh;
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#ifdef ESLOPE
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worldtopslope = worldhighslope;
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#endif
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bothceilingssky = true;
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}
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// likewise, but for floors and upper textures
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if (gr_frontsector->floorpic == skyflatnum
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&& gr_backsector->floorpic == skyflatnum)
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{
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bothfloorssky = true;
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}
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if (!bothceilingssky)
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gr_toptexture = R_GetTextureNum(gr_sidedef->toptexture);
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if (!bothfloorssky)
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gr_bottomtexture = R_GetTextureNum(gr_sidedef->bottomtexture);
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// check TOP TEXTURE
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@ -1643,82 +1649,37 @@ static void HWR_ProcessSeg(void) // Sort of like GLWall::Process in GZDoom
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HWR_ProjectWall(wallVerts, &Surf, blendmode, lightnum, colormap);
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}
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// Isn't this just the most lovely mess
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// Sky culling
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// No longer so much a mess as before!
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if (!gr_curline->polyseg) // Don't do it for polyobjects
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{
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if (gr_frontsector->ceilingpic == skyflatnum || gr_backsector->ceilingpic == skyflatnum)
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if (gr_frontsector->ceilingpic == skyflatnum)
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{
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fixed_t depthwallheight;
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if (gr_backsector->ceilingpic != skyflatnum) // don't cull if back sector is also sky
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{
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wallVerts[2].y = wallVerts[3].y = FIXED_TO_FLOAT(INT32_MAX); // draw to top of map space
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#ifdef ESLOPE
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wallVerts[0].y = FIXED_TO_FLOAT(worldtop);
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wallVerts[1].y = FIXED_TO_FLOAT(worldtopslope);
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#else
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wallVerts[0].y = wallVerts[1].y = FIXED_TO_FLOAT(worldtop);
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#endif
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HWR_DrawSkyWall(wallVerts, &Surf);
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}
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}
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if (!gr_sidedef->toptexture || (gr_frontsector->ceilingpic == skyflatnum && gr_backsector->ceilingpic == skyflatnum)) // when both sectors are sky, the top texture isn't drawn
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depthwallheight = gr_frontsector->ceilingheight < gr_backsector->ceilingheight ? gr_frontsector->ceilingheight : gr_backsector->ceilingheight;
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else
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depthwallheight = gr_frontsector->ceilingheight > gr_backsector->ceilingheight ? gr_frontsector->ceilingheight : gr_backsector->ceilingheight;
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if (gr_frontsector->ceilingheight-gr_frontsector->floorheight <= 0) // current sector is a thok barrier
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if (gr_frontsector->floorpic == skyflatnum)
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{
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if (gr_backsector->ceilingheight-gr_backsector->floorheight <= 0) // behind sector is also a thok barrier
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if (gr_backsector->floorpic != skyflatnum) // don't cull if back sector is also sky
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{
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if (!gr_sidedef->bottomtexture) // Only extend further down if there's no texture
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HWR_DrawSkyWall(wallVerts, &Surf, worldbottom < worldlow ? worldbottom : worldlow, INT32_MAX);
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else
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HWR_DrawSkyWall(wallVerts, &Surf, worldbottom > worldlow ? worldbottom : worldlow, INT32_MAX);
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}
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// behind sector is not a thok barrier
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else if (gr_backsector->ceilingheight <= gr_frontsector->ceilingheight) // behind sector ceiling is lower or equal to current sector
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HWR_DrawSkyWall(wallVerts, &Surf, depthwallheight, INT32_MAX);
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// gr_front/backsector heights need to be used here because of the worldtop being set to worldhigh earlier on
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}
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else if (gr_backsector->ceilingheight-gr_backsector->floorheight <= 0) // behind sector is a thok barrier, current sector is not
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{
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if (gr_backsector->ceilingheight >= gr_frontsector->ceilingheight // thok barrier ceiling height is equal to or greater than current sector ceiling height
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|| gr_backsector->floorheight <= gr_frontsector->floorheight // thok barrier ceiling height is equal to or less than current sector floor height
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|| gr_backsector->ceilingpic != skyflatnum) // thok barrier is not a sky
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HWR_DrawSkyWall(wallVerts, &Surf, depthwallheight, INT32_MAX);
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}
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else // neither sectors are thok barriers
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{
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if ((gr_backsector->ceilingheight < gr_frontsector->ceilingheight && !gr_sidedef->toptexture) // no top texture and sector behind is lower
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|| gr_backsector->ceilingpic != skyflatnum) // behind sector is not a sky
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HWR_DrawSkyWall(wallVerts, &Surf, depthwallheight, INT32_MAX);
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}
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}
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// And now for sky floors!
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if (gr_frontsector->floorpic == skyflatnum || gr_backsector->floorpic == skyflatnum)
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{
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fixed_t depthwallheight;
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if (!gr_sidedef->bottomtexture)
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depthwallheight = worldbottom > worldlow ? worldbottom : worldlow;
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else
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depthwallheight = worldbottom < worldlow ? worldbottom : worldlow;
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if (gr_frontsector->ceilingheight-gr_frontsector->floorheight <= 0) // current sector is a thok barrier
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{
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if (gr_backsector->ceilingheight-gr_backsector->floorheight <= 0) // behind sector is also a thok barrier
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{
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if (!gr_sidedef->toptexture) // Only extend up if there's no texture
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HWR_DrawSkyWall(wallVerts, &Surf, INT32_MIN, worldtop > worldhigh ? worldtop : worldhigh);
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else
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HWR_DrawSkyWall(wallVerts, &Surf, INT32_MIN, worldtop < worldhigh ? worldtop : worldhigh);
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}
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// behind sector is not a thok barrier
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else if (gr_backsector->floorheight >= gr_frontsector->floorheight) // behind sector floor is greater or equal to current sector
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HWR_DrawSkyWall(wallVerts, &Surf, INT32_MIN, depthwallheight);
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}
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else if (gr_backsector->ceilingheight-gr_backsector->floorheight <= 0) // behind sector is a thok barrier, current sector is not
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{
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if (gr_backsector->floorheight <= gr_frontsector->floorheight // thok barrier floor height is equal to or less than current sector floor height
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|| gr_backsector->ceilingheight >= gr_frontsector->ceilingheight // thok barrier floor height is equal to or greater than current sector ceiling height
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|| gr_backsector->floorpic != skyflatnum) // thok barrier is not a sky
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HWR_DrawSkyWall(wallVerts, &Surf, INT32_MIN, depthwallheight);
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}
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else // neither sectors are thok barriers
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{
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if (((gr_backsector->floorheight > gr_frontsector->floorheight && !gr_sidedef->bottomtexture) // no bottom texture and sector behind is higher
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|| gr_backsector->floorpic != skyflatnum) // behind sector is not a sky
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&& ABS(gr_backsector->floorheight - gr_frontsector->floorheight) > FRACUNIT*3/2) // don't draw sky walls for VERY thin differences, this makes for horrible looking slopes sometimes!
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HWR_DrawSkyWall(wallVerts, &Surf, INT32_MIN, depthwallheight);
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#ifdef ESLOPE
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wallVerts[3].y = FIXED_TO_FLOAT(worldbottom);
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wallVerts[2].y = FIXED_TO_FLOAT(worldbottomslope);
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#else
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wallVerts[2].y = wallVerts[3].y = FIXED_TO_FLOAT(worldbottom);
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#endif
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wallVerts[0].y = wallVerts[1].y = FIXED_TO_FLOAT(INT32_MIN); // draw to bottom of map space
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HWR_DrawSkyWall(wallVerts, &Surf);
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}
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}
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}
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@ -1793,9 +1754,27 @@ static void HWR_ProcessSeg(void) // Sort of like GLWall::Process in GZDoom
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if (!gr_curline->polyseg)
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{
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if (gr_frontsector->ceilingpic == skyflatnum) // It's a single-sided line with sky for its sector
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HWR_DrawSkyWall(wallVerts, &Surf, worldtop, INT32_MAX);
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{
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wallVerts[2].y = wallVerts[3].y = FIXED_TO_FLOAT(INT32_MAX); // draw to top of map space
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#ifdef ESLOPE
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wallVerts[0].y = FIXED_TO_FLOAT(worldtop);
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wallVerts[1].y = FIXED_TO_FLOAT(worldtopslope);
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#else
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wallVerts[0].y = wallVerts[1].y = FIXED_TO_FLOAT(worldtop);
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#endif
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HWR_DrawSkyWall(wallVerts, &Surf);
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}
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if (gr_frontsector->floorpic == skyflatnum)
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HWR_DrawSkyWall(wallVerts, &Surf, INT32_MIN, worldbottom);
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{
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#ifdef ESLOPE
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wallVerts[3].y = FIXED_TO_FLOAT(worldbottom);
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wallVerts[2].y = FIXED_TO_FLOAT(worldbottomslope);
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#else
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wallVerts[2].y = wallVerts[3].y = FIXED_TO_FLOAT(worldbottom);
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#endif
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wallVerts[0].y = wallVerts[1].y = FIXED_TO_FLOAT(INT32_MIN); // draw to bottom of map space
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HWR_DrawSkyWall(wallVerts, &Surf);
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}
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}
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}
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