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https://github.com/ZDoom/Raze.git
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Polymost projection changes to correct the perspective in widescreen and ultrawide resolutions.
Patch from Nuke.YKT and Fox. git-svn-id: https://svn.eduke32.com/eduke32@7916 1a8010ca-5511-0410-912e-c29ae57300e0 # Conflicts: # source/build/include/polymost.h # source/build/src/polymost.cpp
This commit is contained in:
terminx
Christoph Oelckers
parent
b7f349cd92
commit
b8f668aa9b
3 changed files with 89 additions and 25 deletions
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@ -66,6 +66,7 @@ float gyxscale, ghalfx, grhalfxdown10, grhalfxdown10x, ghalfy;
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float gcosang, gsinang, gcosang2, gsinang2;
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float gchang, gshang, gctang, gstang, gvisibility;
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float gtang = 0.f;
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float gvrcorrection = 1.f;
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static vec3d_t xtex, ytex, otex, xtex2, ytex2, otex2;
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@ -102,7 +103,7 @@ int32_t r_glowmapping = 1;
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int32_t gltexmaxsize = 0; // 0 means autodetection on first run
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int32_t gltexmiplevel = 0; // discards this many mipmap levels
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int32_t glprojectionhacks = 1;
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int32_t glprojectionhacks = 2;
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static FHardwareTexture *polymosttext = 0;
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int32_t glrendmode = REND_POLYMOST;
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int32_t r_shadeinterpolate = 1;
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@ -329,7 +330,7 @@ float glox1, gloy1, glox2, gloy2, gloyxscale, gloxyaspect, glohoriz2, glohorizco
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static int32_t gltexcacnum = -1;
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//in-place multiply m0=m0*m1
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static float* multiplyMatrix4f(float m0[4*4], const float m1[4*4])
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float* multiplyMatrix4f(float m0[4*4], const float m1[4*4])
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{
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float mR[4*4];
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@ -1141,20 +1142,18 @@ void calc_and_apply_fog_factor(int32_t shade, int32_t vis, int32_t pal, float fa
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static float get_projhack_ratio(void)
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{
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if (glprojectionhacks && !r_yshearing)
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if ((glprojectionhacks == 1) && !r_yshearing)
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{
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float const projhack_zoom = 1.4f *
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// adjust for the FOV, increasing the FOV reduces the zenith glitch
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// don't apply if the zenith is cut from the viewing area
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(65536.f / fviewingrange) *
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(float)(windowxy2.y-windowxy1.y+1) /
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(float)(windowxy2.x-windowxy1.x+1) *
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(float)(xdim)/(float)(ydim);
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if (projhack_zoom < 1.f)
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// calculates the extend of the zenith glitch
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float verticalfovtan = (fviewingrange * (windowxy2.y-windowxy1.y) * 5.f) / ((float)yxaspect * (windowxy2.x-windowxy1.x) * 4.f);
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float verticalfov = atanf(verticalfovtan) * (2.f / fPI);
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static constexpr float const maxhorizangle = 0.6361136f; // horiz of 199 in degrees
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float zenglitch = verticalfov + maxhorizangle - 0.95f; // less than 1 because the zenith glitch extends a bit
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if (zenglitch <= 0.f)
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return 1.f;
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static constexpr float const maxcoshoriz = 0.540971179375801f; // 128/sqrt(128^2+199^2) = cos of an horiz diff of 199
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float const factor = (projhack_zoom - 1.f) * (1.f / maxcoshoriz);
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return 1.f + (factor * (1.f - Bfabsf(gchang)));
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float const zenglitchtan = tanf((verticalfov - zenglitch) * (fPI / 2.f));
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static constexpr float const maxcoshoriz = 0.54097117f; // 128/sqrt(128^2+199^2) = cos of an horiz diff of 199
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return 1.f + (((verticalfovtan / zenglitchtan) - 1.f) * ((1.f - Bfabsf(gchang)) / maxcoshoriz ));
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}
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// No projection hacks (legacy or new-aspect)
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@ -2054,8 +2053,8 @@ static void polymost_updaterotmat(void)
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//Up/down rotation
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float udmatrix[16] = {
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1.f, 0.f, 0.f, 0.f,
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0.f, gchang, -gshang, 0.f,
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0.f, gshang, gchang, 0.f,
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0.f, gchang, -gshang*gvrcorrection, 0.f,
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0.f, gshang/gvrcorrection, gchang, 0.f,
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0.f, 0.f, 0.f, 1.f,
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};
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// Tilt rotation
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@ -2132,8 +2131,8 @@ static void polymost_drawpoly(vec2f_t const * const dpxy, int32_t const n, int32
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int j = 0;
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float px[8], py[8], dd[8], uu[8], vv[8];
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#if SOFTROTMAT
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float const ozgs = ghalfx * gshang,
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ozgc = ghalfx * gchang;
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float const ozgs = (ghalfx / gvrcorrection) * gshang,
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ozgc = (ghalfx / gvrcorrection) * gchang;
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#endif
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for (bssize_t i=0; i<n; ++i)
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@ -2145,12 +2144,14 @@ static void polymost_drawpoly(vec2f_t const * const dpxy, int32_t const n, int32
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(dpxy[i].y - ghoriz) * gshang + ozgc };
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// Tilt rotation
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float const r = ghalfx / orot.z;
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float const r = (ghalfx / gvrcorrection) / orot.z;
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px[j] = ghalfx + (((orot.x * gctang) - (orot.y * gstang)) * r);
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py[j] = ghoriz + (((orot.x * gstang) + (orot.y * gctang)) * r);
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dd[j] = (dpxy[i].x * xtex.d + dpxy[i].y * ytex.d + otex.d) * r;
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if (dd[j] <= 0.f) // invalid polygon
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return;
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uu[j] = (dpxy[i].x * xtex.u + dpxy[i].y * ytex.u + otex.u) * r;
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vv[j] = (dpxy[i].x * xtex.v + dpxy[i].y * ytex.v + otex.v) * r;
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@ -5284,6 +5285,18 @@ void polymost_drawrooms()
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polymost_setBrightness(r_brightnesshack);
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gvrcorrection = viewingrange*(1.f/65536.f);
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if (glprojectionhacks == 2)
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{
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// calculates the extend of the zenith glitch
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float verticalfovtan = (fviewingrange * (windowxy2.y-windowxy1.y) * 5.f) / ((float)yxaspect * (windowxy2.x-windowxy1.x) * 4.f);
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float verticalfov = atanf(verticalfovtan) * (2.f / fPI);
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static constexpr float const maxhorizangle = 0.6361136f; // horiz of 199 in degrees
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float zenglitch = verticalfov + maxhorizangle - 0.95f; // less than 1 because the zenith glitch extends a bit
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if (zenglitch > 0.f)
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gvrcorrection /= (zenglitch * 2.5f) + 1.f;
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}
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//Polymost supports true look up/down :) Here, we convert horizon to angle.
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//gchang&gshang are cos&sin of this angle (respectively)
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gyxscale = ((float)xdimenscale)*(1.0f/131072.f);
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@ -5313,13 +5326,14 @@ void polymost_drawrooms()
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else
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{
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float r = (float)(ydimen >> 1) - ghoriz - ghorizcorrect;
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gshang = r / Bsqrtf(r * r + ghalfx * ghalfx);
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gshang = r / Bsqrtf(r * r + ghalfx * ghalfx / (gvrcorrection * gvrcorrection));
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gchang = Bsqrtf(1.f - gshang * gshang);
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ghoriz2 = 0.f;
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}
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ghoriz = (float)(ydimen>>1);
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resizeglcheck();
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float const ratio = 1.f/get_projhack_ratio();
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//global cos/sin tilt angle
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gctang = cosf(gtang);
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@ -5343,8 +5357,8 @@ void polymost_drawrooms()
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for (auto & v : p)
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{
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//Tilt rotation (backwards)
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vec2f_t const o = { v.x-ghalfx, v.y-ghoriz };
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vec3f_t const o2 = { o.x*gctang + o.y*gstang, o.y*gctang - o.x*gstang + ghoriz2, ghalfx };
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vec2f_t const o = { (v.x-ghalfx)*ratio, (v.y-ghoriz)*ratio };
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vec3f_t const o2 = { o.x*gctang + o.y*gstang, o.y*gctang - o.x*gstang + ghoriz2, ghalfx / gvrcorrection };
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//Up/down rotation (backwards)
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v = { o2.x, o2.y * gchang + o2.z * gshang, o2.z * gchang - o2.y * gshang };
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@ -5380,7 +5394,7 @@ void polymost_drawrooms()
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for (bssize_t i = 0; i < n; i++)
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{
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float const r = ghalfx / p2[i].z;
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float const r = (ghalfx / gvrcorrection) / p2[i].z;
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sx[i] = p2[i].x * r + ghalfx;
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sy[i] = p2[i].y * r + ghoriz;
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}
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@ -5734,6 +5748,18 @@ void polymost_prepareMirror(int32_t dax, int32_t day, int32_t daz, fix16_t daang
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polymost_outputGLDebugMessage(3, "polymost_prepareMirror(%u)", mirrorWall);
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//POGO: prepare necessary globals for drawing, as we intend to call this outside of drawrooms
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gvrcorrection = viewingrange*(1.f/65536.f);
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if (glprojectionhacks == 2)
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{
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// calculates the extend of the zenith glitch
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float verticalfovtan = (fviewingrange * (windowxy2.y-windowxy1.y) * 5.f) / ((float)yxaspect * (windowxy2.x-windowxy1.x) * 4.f);
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float verticalfov = atanf(verticalfovtan) * (2.f / fPI);
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static constexpr float const maxhorizangle = 0.6361136f; // horiz of 199 in degrees
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float zenglitch = verticalfov + maxhorizangle - 0.95f; // less than 1 because the zenith glitch extends a bit
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if (zenglitch > 0.f)
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gvrcorrection /= (zenglitch * 2.5f) + 1.f;
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}
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set_globalpos(dax, day, daz);
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set_globalang(daang);
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globalhoriz = mulscale16(fix16_to_int(dahoriz)-100,divscale16(xdimenscale,viewingrange))+(ydimen>>1);
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@ -5760,7 +5786,7 @@ void polymost_prepareMirror(int32_t dax, int32_t day, int32_t daz, fix16_t daang
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else
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{
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float r = (float)(ydimen >> 1) - ghoriz;
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gshang = r / Bsqrtf(r * r + ghalfx * ghalfx);
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gshang = r / Bsqrtf(r * r + ghalfx * ghalfx / (gvrcorrection * gvrcorrection));
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gchang = Bsqrtf(1.f - gshang * gshang);
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ghoriz2 = 0.f;
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}
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@ -6557,6 +6583,7 @@ void polymost_dorotatespritemodel(int32_t sx, int32_t sy, int32_t z, int16_t a,
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double const ogxyaspect = gxyaspect; gxyaspect = 1.f;
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int const oldviewingrange = viewingrange; viewingrange = 65536;
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float const oldfviewingrange = fviewingrange; fviewingrange = 65536.f;
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float const ogvrcorrection = gvrcorrection; gvrcorrection = 1.f;
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polymost_updaterotmat();
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@ -6748,6 +6775,7 @@ void polymost_dorotatespritemodel(int32_t sx, int32_t sy, int32_t z, int16_t a,
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# endif
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if (!nofog) polymost_setFogEnabled(true);
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gvrcorrection = ogvrcorrection;
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viewingrange = oldviewingrange;
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fviewingrange = oldfviewingrange;
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gxyaspect = ogxyaspect;
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@ -6808,6 +6836,8 @@ void polymost_dorotatesprite(int32_t sx, int32_t sy, int32_t z, int16_t a, int16
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gctang = 1.f;
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float const ogstang = gstang;
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gstang = 0.f;
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float const ogvrcorrection = gvrcorrection;
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gvrcorrection = 1.f;
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polymost_updaterotmat();
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@ -7023,6 +7053,7 @@ void polymost_dorotatesprite(int32_t sx, int32_t sy, int32_t z, int16_t a, int16
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gshang = ogshang;
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gctang = ogctang;
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gstang = ogstang;
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gvrcorrection = ogvrcorrection;
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polymost_identityrotmat();
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}
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