mirror of
https://github.com/ZDoom/qzdoom-gpl.git
synced 2024-12-02 16:32:12 +00:00
Rewrote wallscan to fix buffer overruns and code duplication.
This commit is contained in:
Magnus Norddahl
parent
c452d02573
commit
c59db95cc8
1 changed files with 283 additions and 627 deletions
910
src/r_segs.cpp
910
src/r_segs.cpp
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@ -1065,53 +1065,149 @@ void R_RenderFakeWallRange (drawseg_t *ds, int x1, int x2)
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return;
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}
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// prevlineasm1 is like vlineasm1 but skips the loop if only drawing one pixel
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inline fixed_t prevline1 (fixed_t vince, BYTE *colormap, fixed_t light, int count, fixed_t vplce, const BYTE *bufplce, BYTE *dest)
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// Draw a column with support for non-power-of-two ranges
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uint32_t wallscan_drawcol1(int x, int y1, int y2, uint32_t uv_start, uint32_t uv_step, uint32_t uv_max, const BYTE *source, DWORD(*draw1column)())
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{
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dc_iscale = vince;
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dc_colormap = colormap;
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dc_light = light;
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dc_count = count;
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dc_texturefrac = vplce;
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dc_source = bufplce;
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dc_dest = dest;
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return doprevline1 ();
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int pixelsize = r_swtruecolor ? 4 : 1;
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if (uv_max == 0) // power of two
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{
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int count = y2 - y1;
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if (count > 0)
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{
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dc_source = source;
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dc_dest = (ylookup[y1] + x) * pixelsize + dc_destorg;
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dc_count = y2 - y1;
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dc_iscale = uv_step;
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dc_texturefrac = uv_start;
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draw1column();
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}
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return uv_start + uv_step * (uint32_t)count;
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}
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else
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{
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uint32_t uv_pos = uv_start;
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int left = y2 - y1;
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while (left > 0)
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{
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int next_uv_wrap = (uv_max - uv_pos + uv_step - 1) / uv_step;
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int count = MIN(left, next_uv_wrap);
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if (count > 0)
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{
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dc_source = source;
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dc_dest = (ylookup[y1] + x) * pixelsize + dc_destorg;
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dc_count = count;
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dc_iscale = uv_step;
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dc_texturefrac = uv_pos;
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draw1column();
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}
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left -= count;
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uv_pos += uv_step * count;
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if (uv_pos >= uv_max)
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uv_pos -= uv_max;
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}
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return uv_pos;
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}
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}
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void wallscan (int x1, int x2, short *uwal, short *dwal, float *swal, fixed_t *lwal,
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double yrepeat, const BYTE *(*getcol)(FTexture *tex, int x))
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// Draw four columns with support for non-power-of-two ranges
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void wallscan_drawcol4(int x, int y1, int y2, uint32_t *uv_pos, uint32_t *uv_step, uint32_t uv_max, const BYTE **source, void(*draw4columns)())
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{
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int x, fracbits;
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int y1ve[4], y2ve[4], u4, d4, z;
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char bad;
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float light = rw_light - rw_lightstep;
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SDWORD xoffset;
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BYTE *basecolormapdata;
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double iscale;
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// This function also gets used to draw skies. Unlike BUILD, skies are
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// drawn by visplane instead of by bunch, so these checks are invalid.
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//if ((uwal[x1] > viewheight) && (uwal[x2] > viewheight)) return;
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//if ((dwal[x1] < 0) && (dwal[x2] < 0)) return;
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if (rw_pic->UseType == FTexture::TEX_Null)
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{
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return;
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}
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//extern cycle_t WallScanCycles;
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//clock (WallScanCycles);
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int pixelsize = r_swtruecolor ? 4 : 1;
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if (uv_max == 0) // power of two, no wrap handling needed
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{
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for (int i = 0; i < 4; i++)
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{
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bufplce[i] = source[i];
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vplce[i] = uv_pos[i];
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vince[i] = uv_step[i];
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uv_pos[i] += uv_step[i] * (y2 - y1);
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}
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dc_dest = (ylookup[y1] + x) * pixelsize + dc_destorg;
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dc_count = y2 - y1;
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draw4columns();
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}
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else
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{
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dc_dest = (ylookup[y1] + x) * pixelsize + dc_destorg;
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for (int i = 0; i < 4; i++)
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bufplce[i] = source[i];
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rw_pic->GetHeight(); // Make sure texture size is loaded
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fracbits = 32 - rw_pic->HeightBits;
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setupvline(fracbits);
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xoffset = rw_offset;
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basecolormapdata = basecolormap->Maps;
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int left = y2 - y1;
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while (left > 0)
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{
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// Find which column wraps first
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int count = left;
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for (int i = 0; i < 4; i++)
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{
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int next_uv_wrap = (uv_max - uv_pos[i] + uv_step[i] - 1) / uv_step[i];
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count = MIN(next_uv_wrap, count);
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}
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x = x1;
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//while ((umost[x] > dmost[x]) && (x < x2)) x++;
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// Draw until that column wraps
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if (count > 0)
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{
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for (int i = 0; i < 4; i++)
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{
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vplce[i] = uv_pos[i];
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vince[i] = uv_step[i];
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}
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dc_count = count;
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draw4columns();
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}
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// Wrap the uv position
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for (int i = 0; i < 4; i++)
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{
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uv_pos[i] += uv_step[i] * count;
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if (uv_pos[i] >= uv_max)
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uv_pos[i] -= uv_max;
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}
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left -= count;
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}
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}
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}
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// Calculates a wrapped uv start position value for a column
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void calc_uv_start_and_step(int y1, float swal, double yrepeat, uint32_t uv_height, int fracbits, uint32_t &uv_start_out, uint32_t &uv_step_out)
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{
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double uv_stepd = swal * yrepeat;
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// Find start uv in [0-uv_height[ range.
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// Not using xs_ToFixed because it rounds the result and we need something that always rounds down to stay within the range.
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double v = (dc_texturemid + uv_stepd * (y1 - CenterY + 0.5)) / uv_height;
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v = v - std::floor(v);
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v *= uv_height;
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v *= (1 << fracbits);
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uv_start_out = (uint32_t)v;
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uv_step_out = xs_ToFixed(fracbits, uv_stepd);
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}
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typedef DWORD(*Draw1ColumnFuncPtr)();
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typedef void(*Draw4ColumnsFuncPtr)();
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void wallscan_any(
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int x1, int x2, short *uwal, short *dwal, float *swal, fixed_t *lwal, double yrepeat,
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const BYTE *(*getcol)(FTexture *tex, int x),
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void(setupwallscan(int bits,Draw1ColumnFuncPtr &draw1, Draw4ColumnsFuncPtr &draw2)))
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{
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if (rw_pic->UseType == FTexture::TEX_Null)
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return;
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uint32_t uv_height = rw_pic->GetHeight();
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uint32_t fracbits = 32 - rw_pic->HeightBits;
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uint32_t uv_max = uv_height << fracbits;
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DWORD(*draw1column)();
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void(*draw4columns)();
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setupwallscan(fracbits, draw1column, draw4columns);
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fixed_t xoffset = rw_offset;
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bool fixed = (fixedcolormap != NULL || fixedlightlev >= 0);
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if (fixed)
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@ -1131,139 +1227,190 @@ void wallscan (int x1, int x2, short *uwal, short *dwal, float *swal, fixed_t *l
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else
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R_SetColorMapLight(basecolormap, 0, 0);
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for(; (x < x2) && (x & 3); ++x)
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float light = rw_light;
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// Calculate where 4 column alignment begins and ends:
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int aligned_x1 = clamp((x1 + 3) / 4 * 4, x1, x2);
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int aligned_x2 = clamp(x2 / 4 * 4, x1, x2);
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// First unaligned columns:
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for (int x = x1; x < aligned_x1; x++, light += rw_lightstep)
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{
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light += rw_lightstep;
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y1ve[0] = uwal[x];//max(uwal[x],umost[x]);
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y2ve[0] = dwal[x];//min(dwal[x],dmost[x]);
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if (y2ve[0] <= y1ve[0]) continue;
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assert (y1ve[0] < viewheight);
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assert (y2ve[0] <= viewheight);
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int y1 = uwal[x];
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int y2 = dwal[x];
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if (y2 <= y1)
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continue;
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if (!fixed)
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{ // calculate lighting
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R_SetColorMapLight(basecolormap, light, wallshade);
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}
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dc_source = getcol (rw_pic, (lwal[x] + xoffset) >> FRACBITS);
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dc_dest = (ylookup[y1ve[0]] + x)*pixelsize + dc_destorg;
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dc_count = y2ve[0] - y1ve[0];
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iscale = swal[x] * yrepeat;
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dc_iscale = xs_ToFixed(fracbits, iscale);
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dc_texturefrac = xs_ToFixed(fracbits, dc_texturemid + iscale * (y1ve[0] - CenterY + 0.5));
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const BYTE *source = getcol(rw_pic, (lwal[x] + xoffset) >> FRACBITS);
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dovline1();
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uint32_t uv_start, uv_step;
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calc_uv_start_and_step(y1, swal[x], yrepeat, uv_height, fracbits, uv_start, uv_step);
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wallscan_drawcol1(x, y1, y2, uv_start, uv_step, uv_max, source, draw1column);
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}
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for(; x < x2-3; x += 4)
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// The aligned columns
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for (int x = aligned_x1; x < aligned_x2; x += 4)
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{
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bad = 0;
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for (z = 3; z>= 0; --z)
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{
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y1ve[z] = uwal[x+z];//max(uwal[x+z],umost[x+z]);
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y2ve[z] = dwal[x+z];//min(dwal[x+z],dmost[x+z])-1;
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if (y2ve[z] <= y1ve[z]) { bad += 1<<z; continue; }
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assert (y1ve[z] < viewheight);
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assert (y2ve[z] <= viewheight);
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// Find y1, y2, light and uv values for four columns:
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int y1[4] = { uwal[x], uwal[x + 1], uwal[x + 2], uwal[x + 3] };
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int y2[4] = { dwal[x], dwal[x + 1], dwal[x + 2], dwal[x + 3] };
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bufplce[z] = getcol (rw_pic, (lwal[x+z] + xoffset) >> FRACBITS);
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iscale = swal[x + z] * yrepeat;
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vince[z] = xs_ToFixed(fracbits, iscale);
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vplce[z] = xs_ToFixed(fracbits, dc_texturemid + iscale * (y1ve[z] - CenterY + 0.5));
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}
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if (bad == 15)
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const BYTE *source[4];
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for (int i = 0; i < 4; i++)
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source[i] = getcol(rw_pic, (lwal[x + i] + xoffset) >> FRACBITS);
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float lights[4];
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for (int i = 0; i < 4; i++)
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{
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light += rw_lightstep * 4;
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lights[i] = light;
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light += rw_lightstep;
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}
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uint32_t uv_pos[4], uv_step[4];
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for (int i = 0; i < 4; i++)
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calc_uv_start_and_step(y1[i], swal[x + i], yrepeat, uv_height, fracbits, uv_pos[i], uv_step[i]);
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// Figure out where we vertically can start and stop drawing 4 columns in one go
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int middle_y1 = y1[0];
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int middle_y2 = y2[0];
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for (int i = 1; i < 4; i++)
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{
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middle_y1 = MAX(y1[i], middle_y1);
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middle_y2 = MIN(y2[i], middle_y2);
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}
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// If we got an empty column in our set we cannot draw 4 columns in one go:
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bool empty_column_in_set = false;
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for (int i = 0; i < 4; i++)
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{
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if (y2[i] <= y1[i])
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empty_column_in_set = true;
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}
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if (empty_column_in_set || middle_y2 <= middle_y1)
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{
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for (int i = 0; i < 4; i++)
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{
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if (!fixed)
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R_SetColorMapLight(basecolormap, lights[i], wallshade);
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wallscan_drawcol1(x + i, y1[i], y2[i], uv_pos[i], uv_step[i], uv_max, source[i], draw1column);
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}
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continue;
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}
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// Draw the first rows where not all 4 columns are active
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for (int i = 0; i < 4; i++)
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{
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if (!fixed)
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R_SetColorMapLight(basecolormap, lights[i], wallshade);
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if (y1[i] < middle_y1)
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uv_pos[i] = wallscan_drawcol1(x + i, y1[i], middle_y1, uv_pos[i], uv_step[i], uv_max, source[i], draw1column);
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}
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// Draw the area where all 4 columns are active
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if (!fixed)
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{
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for (z = 0; z < 4; ++z)
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for (int i = 0; i < 4; i++)
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{
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light += rw_lightstep;
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if (r_swtruecolor)
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{
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palookupoffse[z] = basecolormapdata;
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palookuplight[z] = LIGHTSCALE(light, wallshade);
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palookupoffse[i] = basecolormap->Maps;
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palookuplight[i] = LIGHTSCALE(lights[i], wallshade);
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}
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else
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{
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palookupoffse[z] = basecolormapdata + (GETPALOOKUP(light, wallshade) << COLORMAPSHIFT);
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palookuplight[z] = 0;
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palookupoffse[i] = basecolormap->Maps + (GETPALOOKUP(lights[i], wallshade) << COLORMAPSHIFT);
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palookuplight[i] = 0;
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}
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}
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}
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wallscan_drawcol4(x, middle_y1, middle_y2, uv_pos, uv_step, uv_max, source, draw4columns);
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u4 = MAX(MAX(y1ve[0],y1ve[1]),MAX(y1ve[2],y1ve[3]));
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d4 = MIN(MIN(y2ve[0],y2ve[1]),MIN(y2ve[2],y2ve[3]));
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if ((bad != 0) || (u4 >= d4))
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// Draw the last rows where not all 4 columns are active
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for (int i = 0; i < 4; i++)
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{
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for (z = 0; z < 4; ++z)
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{
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if (!(bad & 1))
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{
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prevline1(vince[z],palookupoffse[z],palookuplight[z],y2ve[z]-y1ve[z],vplce[z],bufplce[z],(ylookup[y1ve[z]]+x+z)*pixelsize+dc_destorg);
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}
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bad >>= 1;
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}
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continue;
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}
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if (!fixed)
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R_SetColorMapLight(basecolormap, lights[i], wallshade);
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for (z = 0; z < 4; ++z)
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{
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if (u4 > y1ve[z])
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{
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vplce[z] = prevline1(vince[z],palookupoffse[z], palookuplight[z],u4-y1ve[z],vplce[z],bufplce[z],(ylookup[y1ve[z]]+x+z)*pixelsize+dc_destorg);
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}
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}
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if (d4 > u4)
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{
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dc_count = d4-u4;
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dc_dest = (ylookup[u4]+x)*pixelsize+dc_destorg;
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dovline4();
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}
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BYTE *i = (x+ylookup[d4])*pixelsize+dc_destorg;
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for (z = 0; z < 4; ++z)
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{
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if (y2ve[z] > d4)
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{
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prevline1(vince[z],palookupoffse[0],palookuplight[0],y2ve[z]-d4,vplce[z],bufplce[z],i+z*pixelsize);
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}
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if (middle_y2 < y2[i])
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uv_pos[i] = wallscan_drawcol1(x + i, middle_y2, y2[i], uv_pos[i], uv_step[i], uv_max, source[i], draw1column);
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}
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}
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for(;x<x2;x++)
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// The last unaligned columns:
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for (int x = aligned_x2; x < x2; x++, light += rw_lightstep)
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{
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light += rw_lightstep;
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y1ve[0] = uwal[x];//max(uwal[x],umost[x]);
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y2ve[0] = dwal[x];//min(dwal[x],dmost[x]);
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if (y2ve[0] <= y1ve[0]) continue;
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assert (y1ve[0] < viewheight);
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assert (y2ve[0] <= viewheight);
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int y1 = uwal[x];
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int y2 = dwal[x];
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if (y2 <= y1)
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continue;
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if (!fixed)
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{ // calculate lighting
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R_SetColorMapLight(basecolormap, light, wallshade);
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}
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dc_source = getcol (rw_pic, (lwal[x] + xoffset) >> FRACBITS);
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dc_dest = (ylookup[y1ve[0]] + x) * pixelsize + dc_destorg;
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dc_count = y2ve[0] - y1ve[0];
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iscale = swal[x] * yrepeat;
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dc_iscale = xs_ToFixed(fracbits, iscale);
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dc_texturefrac = xs_ToFixed(fracbits, dc_texturemid + iscale * (y1ve[0] - CenterY + 0.5));
|
||||
const BYTE *source = getcol(rw_pic, (lwal[x] + xoffset) >> FRACBITS);
|
||||
|
||||
dovline1();
|
||||
uint32_t uv_start, uv_step;
|
||||
calc_uv_start_and_step(y1, swal[x], yrepeat, uv_height, fracbits, uv_start, uv_step);
|
||||
|
||||
wallscan_drawcol1(x, y1, y2, uv_start, uv_step, uv_max, source, draw1column);
|
||||
}
|
||||
|
||||
//unclock (WallScanCycles);
|
||||
|
||||
NetUpdate ();
|
||||
}
|
||||
|
||||
void wallscan(int x1, int x2, short *uwal, short *dwal, float *swal, fixed_t *lwal, double yrepeat, const BYTE *(*getcol)(FTexture *tex, int x))
|
||||
{
|
||||
wallscan_any(x1, x2, uwal, dwal, swal, lwal, yrepeat, getcol, [](int bits, Draw1ColumnFuncPtr &line1, Draw4ColumnsFuncPtr &line4)
|
||||
{
|
||||
setupvline(bits);
|
||||
line1 = dovline1;
|
||||
line4 = dovline4;
|
||||
});
|
||||
}
|
||||
|
||||
void maskwallscan(int x1, int x2, short *uwal, short *dwal, float *swal, fixed_t *lwal, double yrepeat, const BYTE *(*getcol)(FTexture *tex, int x))
|
||||
{
|
||||
if (!rw_pic->bMasked) // Textures that aren't masked can use the faster wallscan.
|
||||
{
|
||||
wallscan(x1, x2, uwal, dwal, swal, lwal, yrepeat, getcol);
|
||||
}
|
||||
else
|
||||
{
|
||||
wallscan_any(x1, x2, uwal, dwal, swal, lwal, yrepeat, getcol, [](int bits, Draw1ColumnFuncPtr &line1, Draw4ColumnsFuncPtr &line4)
|
||||
{
|
||||
setupmvline(bits);
|
||||
line1 = domvline1;
|
||||
line4 = domvline4;
|
||||
});
|
||||
}
|
||||
}
|
||||
|
||||
void transmaskwallscan(int x1, int x2, short *uwal, short *dwal, float *swal, fixed_t *lwal, double yrepeat, const BYTE *(*getcol)(FTexture *tex, int x))
|
||||
{
|
||||
static fixed_t(*tmvline1)();
|
||||
static void(*tmvline4)();
|
||||
if (!R_GetTransMaskDrawers(&tmvline1, &tmvline4))
|
||||
{
|
||||
// The current translucency is unsupported, so draw with regular maskwallscan instead.
|
||||
maskwallscan(x1, x2, uwal, dwal, swal, lwal, yrepeat, getcol);
|
||||
}
|
||||
else
|
||||
{
|
||||
wallscan_any(x1, x2, uwal, dwal, swal, lwal, yrepeat, getcol, [](int bits, Draw1ColumnFuncPtr &line1, Draw4ColumnsFuncPtr &line4)
|
||||
{
|
||||
setuptmvline(bits);
|
||||
line1 = reinterpret_cast<DWORD(*)()>(tmvline1);
|
||||
line4 = tmvline4;
|
||||
});
|
||||
}
|
||||
}
|
||||
|
||||
void wallscan_striped (int x1, int x2, short *uwal, short *dwal, float *swal, fixed_t *lwal, double yrepeat)
|
||||
{
|
||||
FDynamicColormap *startcolormap = basecolormap;
|
||||
|
|
@ -1331,507 +1478,16 @@ static void call_wallscan(int x1, int x2, short *uwal, short *dwal, float *swal,
|
|||
}
|
||||
}
|
||||
|
||||
//=============================================================================
|
||||
//
|
||||
// wallscan_np2
|
||||
//
|
||||
// This is a wrapper around wallscan that helps it tile textures whose heights
|
||||
// are not powers of 2. It divides the wall into texture-sized strips and calls
|
||||
// wallscan for each of those. Since only one repetition of the texture fits
|
||||
// in each strip, wallscan will not tile.
|
||||
//
|
||||
//=============================================================================
|
||||
|
||||
// wallscan now tiles with non-power-of-two textures - this function is therefore not needed anymore..
|
||||
void wallscan_np2(int x1, int x2, short *uwal, short *dwal, float *swal, fixed_t *lwal, double yrepeat, double top, double bot, bool mask)
|
||||
{
|
||||
if (!r_np2)
|
||||
{
|
||||
call_wallscan(x1, x2, uwal, dwal, swal, lwal, yrepeat, mask);
|
||||
}
|
||||
else
|
||||
{
|
||||
short most1[MAXWIDTH], most2[MAXWIDTH], most3[MAXWIDTH];
|
||||
short *up, *down;
|
||||
double texheight = rw_pic->GetHeight();
|
||||
double partition;
|
||||
double scaledtexheight = texheight / yrepeat;
|
||||
|
||||
if (yrepeat >= 0)
|
||||
{ // normal orientation: draw strips from top to bottom
|
||||
partition = top - fmod(top - dc_texturemid / yrepeat - ViewPos.Z, scaledtexheight);
|
||||
if (partition == top)
|
||||
{
|
||||
partition -= scaledtexheight;
|
||||
}
|
||||
up = uwal;
|
||||
down = most1;
|
||||
dc_texturemid = (partition - ViewPos.Z) * yrepeat + texheight;
|
||||
while (partition > bot)
|
||||
{
|
||||
int j = OWallMost(most3, partition - ViewPos.Z, &WallC);
|
||||
if (j != 3)
|
||||
{
|
||||
for (int j = x1; j < x2; ++j)
|
||||
{
|
||||
down[j] = clamp(most3[j], up[j], dwal[j]);
|
||||
}
|
||||
call_wallscan(x1, x2, up, down, swal, lwal, yrepeat, mask);
|
||||
up = down;
|
||||
down = (down == most1) ? most2 : most1;
|
||||
}
|
||||
partition -= scaledtexheight;
|
||||
dc_texturemid -= texheight;
|
||||
}
|
||||
call_wallscan(x1, x2, up, dwal, swal, lwal, yrepeat, mask);
|
||||
}
|
||||
else
|
||||
{ // upside down: draw strips from bottom to top
|
||||
partition = bot - fmod(bot - dc_texturemid / yrepeat - ViewPos.Z, scaledtexheight);
|
||||
up = most1;
|
||||
down = dwal;
|
||||
dc_texturemid = (partition - ViewPos.Z) * yrepeat + texheight;
|
||||
while (partition < top)
|
||||
{
|
||||
int j = OWallMost(most3, partition - ViewPos.Z, &WallC);
|
||||
if (j != 12)
|
||||
{
|
||||
for (int j = x1; j < x2; ++j)
|
||||
{
|
||||
up[j] = clamp(most3[j], uwal[j], down[j]);
|
||||
}
|
||||
call_wallscan(x1, x2, up, down, swal, lwal, yrepeat, mask);
|
||||
down = up;
|
||||
up = (up == most1) ? most2 : most1;
|
||||
}
|
||||
partition -= scaledtexheight;
|
||||
dc_texturemid -= texheight;
|
||||
}
|
||||
call_wallscan(x1, x2, uwal, down, swal, lwal, yrepeat, mask);
|
||||
}
|
||||
}
|
||||
call_wallscan(x1, x2, uwal, dwal, swal, lwal, yrepeat, mask);
|
||||
}
|
||||
|
||||
// wallscan now tiles with non-power-of-two textures - this function is therefore not needed anymore..
|
||||
static void wallscan_np2_ds(drawseg_t *ds, int x1, int x2, short *uwal, short *dwal, float *swal, fixed_t *lwal, double yrepeat)
|
||||
{
|
||||
if (rw_pic->GetHeight() != 1 << rw_pic->HeightBits)
|
||||
{
|
||||
double frontcz1 = ds->curline->frontsector->ceilingplane.ZatPoint(ds->curline->v1);
|
||||
double frontfz1 = ds->curline->frontsector->floorplane.ZatPoint(ds->curline->v1);
|
||||
double frontcz2 = ds->curline->frontsector->ceilingplane.ZatPoint(ds->curline->v2);
|
||||
double frontfz2 = ds->curline->frontsector->floorplane.ZatPoint(ds->curline->v2);
|
||||
double top = MAX(frontcz1, frontcz2);
|
||||
double bot = MIN(frontfz1, frontfz2);
|
||||
if (fake3D & FAKE3D_CLIPTOP)
|
||||
{
|
||||
top = MIN(top, sclipTop);
|
||||
}
|
||||
if (fake3D & FAKE3D_CLIPBOTTOM)
|
||||
{
|
||||
bot = MAX(bot, sclipBottom);
|
||||
}
|
||||
wallscan_np2(x1, x2, uwal, dwal, swal, lwal, yrepeat, top, bot, true);
|
||||
}
|
||||
else
|
||||
{
|
||||
call_wallscan(x1, x2, uwal, dwal, swal, lwal, yrepeat, true);
|
||||
}
|
||||
}
|
||||
|
||||
inline fixed_t mvline1 (fixed_t vince, BYTE *colormap, fixed_t light, int count, fixed_t vplce, const BYTE *bufplce, BYTE *dest)
|
||||
{
|
||||
dc_iscale = vince;
|
||||
dc_colormap = colormap;
|
||||
dc_light = light;
|
||||
dc_count = count;
|
||||
dc_texturefrac = vplce;
|
||||
dc_source = bufplce;
|
||||
dc_dest = dest;
|
||||
return domvline1 ();
|
||||
}
|
||||
|
||||
void maskwallscan (int x1, int x2, short *uwal, short *dwal, float *swal, fixed_t *lwal,
|
||||
double yrepeat, const BYTE *(*getcol)(FTexture *tex, int x))
|
||||
{
|
||||
int x, fracbits;
|
||||
BYTE *pixel;
|
||||
int pixelsize, pixelshift;
|
||||
int y1ve[4], y2ve[4], u4, d4, startx, dax, z;
|
||||
char bad;
|
||||
float light = rw_light - rw_lightstep;
|
||||
SDWORD xoffset;
|
||||
BYTE *basecolormapdata;
|
||||
double iscale;
|
||||
|
||||
if (rw_pic->UseType == FTexture::TEX_Null)
|
||||
{
|
||||
return;
|
||||
}
|
||||
|
||||
if (!rw_pic->bMasked)
|
||||
{ // Textures that aren't masked can use the faster wallscan.
|
||||
wallscan (x1, x2, uwal, dwal, swal, lwal, yrepeat, getcol);
|
||||
return;
|
||||
}
|
||||
|
||||
//extern cycle_t WallScanCycles;
|
||||
//clock (WallScanCycles);
|
||||
|
||||
pixelsize = r_swtruecolor ? 4 : 1;
|
||||
pixelshift = r_swtruecolor ? 2 : 0;
|
||||
|
||||
rw_pic->GetHeight(); // Make sure texture size is loaded
|
||||
fracbits = 32- rw_pic->HeightBits;
|
||||
setupmvline(fracbits);
|
||||
xoffset = rw_offset;
|
||||
basecolormapdata = basecolormap->Maps;
|
||||
|
||||
x = startx = x1;
|
||||
pixel = x * pixelsize + dc_destorg;
|
||||
|
||||
bool fixed = (fixedcolormap != NULL || fixedlightlev >= 0);
|
||||
if (fixed)
|
||||
{
|
||||
palookupoffse[0] = dc_colormap;
|
||||
palookupoffse[1] = dc_colormap;
|
||||
palookupoffse[2] = dc_colormap;
|
||||
palookupoffse[3] = dc_colormap;
|
||||
palookuplight[0] = 0;
|
||||
palookuplight[1] = 0;
|
||||
palookuplight[2] = 0;
|
||||
palookuplight[3] = 0;
|
||||
}
|
||||
|
||||
if (fixedcolormap)
|
||||
R_SetColorMapLight(fixedcolormap, 0, 0);
|
||||
else
|
||||
R_SetColorMapLight(basecolormap, 0, 0);
|
||||
|
||||
for(; (x < x2) && (((size_t)pixel >> pixelshift) & 3); ++x, pixel += pixelsize)
|
||||
{
|
||||
light += rw_lightstep;
|
||||
y1ve[0] = uwal[x];//max(uwal[x],umost[x]);
|
||||
y2ve[0] = dwal[x];//min(dwal[x],dmost[x]);
|
||||
if (y2ve[0] <= y1ve[0]) continue;
|
||||
|
||||
if (!fixed)
|
||||
{ // calculate lighting
|
||||
R_SetColorMapLight(basecolormap, light, wallshade);
|
||||
}
|
||||
|
||||
dc_source = getcol (rw_pic, (lwal[x] + xoffset) >> FRACBITS);
|
||||
dc_dest = ylookup[y1ve[0]] * pixelsize + pixel;
|
||||
dc_count = y2ve[0] - y1ve[0];
|
||||
iscale = swal[x] * yrepeat;
|
||||
dc_iscale = xs_ToFixed(fracbits, iscale);
|
||||
dc_texturefrac = xs_ToFixed(fracbits, dc_texturemid + iscale * (y1ve[0] - CenterY + 0.5));
|
||||
|
||||
domvline1();
|
||||
}
|
||||
|
||||
for(; x < x2-3; x += 4, pixel += 4 * pixelsize)
|
||||
{
|
||||
bad = 0;
|
||||
for (z = 3, dax = x+3; z >= 0; --z, --dax)
|
||||
{
|
||||
y1ve[z] = uwal[dax];
|
||||
y2ve[z] = dwal[dax];
|
||||
if (y2ve[z] <= y1ve[z]) { bad += 1<<z; continue; }
|
||||
|
||||
bufplce[z] = getcol (rw_pic, (lwal[dax] + xoffset) >> FRACBITS);
|
||||
iscale = swal[dax] * yrepeat;
|
||||
vince[z] = xs_ToFixed(fracbits, iscale);
|
||||
vplce[z] = xs_ToFixed(fracbits, dc_texturemid + iscale * (y1ve[z] - CenterY + 0.5));
|
||||
}
|
||||
if (bad == 15)
|
||||
{
|
||||
light += rw_lightstep * 4;
|
||||
continue;
|
||||
}
|
||||
|
||||
if (!fixed)
|
||||
{
|
||||
for (z = 0; z < 4; ++z)
|
||||
{
|
||||
light += rw_lightstep;
|
||||
if (r_swtruecolor)
|
||||
{
|
||||
palookupoffse[z] = basecolormapdata;
|
||||
palookuplight[z] = LIGHTSCALE(light, wallshade);
|
||||
}
|
||||
else
|
||||
{
|
||||
palookupoffse[z] = basecolormapdata + (GETPALOOKUP(light, wallshade) << COLORMAPSHIFT);
|
||||
palookuplight[z] = 0;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
u4 = MAX(MAX(y1ve[0],y1ve[1]),MAX(y1ve[2],y1ve[3]));
|
||||
d4 = MIN(MIN(y2ve[0],y2ve[1]),MIN(y2ve[2],y2ve[3]));
|
||||
|
||||
if ((bad != 0) || (u4 >= d4))
|
||||
{
|
||||
for (z = 0; z < 4; ++z)
|
||||
{
|
||||
if (!(bad & 1))
|
||||
{
|
||||
mvline1(vince[z],palookupoffse[z],palookuplight[z],y2ve[z]-y1ve[z],vplce[z],bufplce[z],(ylookup[y1ve[z]]+z)*pixelsize+pixel);
|
||||
}
|
||||
bad >>= 1;
|
||||
}
|
||||
continue;
|
||||
}
|
||||
|
||||
for (z = 0; z < 4; ++z)
|
||||
{
|
||||
if (u4 > y1ve[z])
|
||||
{
|
||||
vplce[z] = mvline1(vince[z],palookupoffse[z],palookuplight[z],u4-y1ve[z],vplce[z],bufplce[z],(ylookup[y1ve[z]]+z)*pixelsize+pixel);
|
||||
}
|
||||
}
|
||||
|
||||
if (d4 > u4)
|
||||
{
|
||||
dc_count = d4-u4;
|
||||
dc_dest = ylookup[u4]*pixelsize+pixel;
|
||||
domvline4();
|
||||
}
|
||||
|
||||
BYTE *i = pixel+ylookup[d4]*pixelsize;
|
||||
for (z = 0; z < 4; ++z)
|
||||
{
|
||||
if (y2ve[z] > d4)
|
||||
{
|
||||
mvline1(vince[z],palookupoffse[0],palookuplight[0],y2ve[z]-d4,vplce[z],bufplce[z],i+z*pixelsize);
|
||||
}
|
||||
}
|
||||
}
|
||||
for(; x < x2; ++x, pixel += pixelsize)
|
||||
{
|
||||
light += rw_lightstep;
|
||||
y1ve[0] = uwal[x];
|
||||
y2ve[0] = dwal[x];
|
||||
if (y2ve[0] <= y1ve[0]) continue;
|
||||
|
||||
if (!fixed)
|
||||
{ // calculate lighting
|
||||
R_SetColorMapLight(basecolormap, light, wallshade);
|
||||
}
|
||||
|
||||
dc_source = getcol (rw_pic, (lwal[x] + xoffset) >> FRACBITS);
|
||||
dc_dest = ylookup[y1ve[0]]*pixelsize + pixel;
|
||||
dc_count = y2ve[0] - y1ve[0];
|
||||
iscale = swal[x] * yrepeat;
|
||||
dc_iscale = xs_ToFixed(fracbits, iscale);
|
||||
dc_texturefrac = xs_ToFixed(fracbits, dc_texturemid + iscale * (y1ve[0] - CenterY + 0.5));
|
||||
|
||||
domvline1();
|
||||
}
|
||||
|
||||
//unclock(WallScanCycles);
|
||||
|
||||
NetUpdate ();
|
||||
}
|
||||
|
||||
inline void preptmvline1 (fixed_t vince, BYTE *colormap, fixed_t light, int count, fixed_t vplce, const BYTE *bufplce, BYTE *dest)
|
||||
{
|
||||
dc_iscale = vince;
|
||||
dc_colormap = colormap;
|
||||
dc_light = light;
|
||||
dc_count = count;
|
||||
dc_texturefrac = vplce;
|
||||
dc_source = bufplce;
|
||||
dc_dest = dest;
|
||||
}
|
||||
|
||||
void transmaskwallscan (int x1, int x2, short *uwal, short *dwal, float *swal, fixed_t *lwal,
|
||||
double yrepeat, const BYTE *(*getcol)(FTexture *tex, int x))
|
||||
{
|
||||
fixed_t (*tmvline1)();
|
||||
void (*tmvline4)();
|
||||
int x, fracbits;
|
||||
BYTE *pixel;
|
||||
int pixelsize, pixelshift;
|
||||
int y1ve[4], y2ve[4], u4, d4, startx, dax, z;
|
||||
char bad;
|
||||
float light = rw_light - rw_lightstep;
|
||||
SDWORD xoffset;
|
||||
BYTE *basecolormapdata;
|
||||
double iscale;
|
||||
|
||||
if (rw_pic->UseType == FTexture::TEX_Null)
|
||||
{
|
||||
return;
|
||||
}
|
||||
|
||||
if (!R_GetTransMaskDrawers (&tmvline1, &tmvline4))
|
||||
{
|
||||
// The current translucency is unsupported, so draw with regular maskwallscan instead.
|
||||
maskwallscan (x1, x2, uwal, dwal, swal, lwal, yrepeat, getcol);
|
||||
return;
|
||||
}
|
||||
|
||||
//extern cycle_t WallScanCycles;
|
||||
//clock (WallScanCycles);
|
||||
|
||||
pixelsize = r_swtruecolor ? 4 : 1;
|
||||
pixelshift = r_swtruecolor ? 2 : 0;
|
||||
|
||||
rw_pic->GetHeight(); // Make sure texture size is loaded
|
||||
fracbits = 32 - rw_pic->HeightBits;
|
||||
setuptmvline(fracbits);
|
||||
xoffset = rw_offset;
|
||||
basecolormapdata = basecolormap->Maps;
|
||||
fixed_t centeryfrac = FLOAT2FIXED(CenterY);
|
||||
|
||||
x = startx = x1;
|
||||
pixel = x * pixelsize + dc_destorg;
|
||||
|
||||
bool fixed = (fixedcolormap != NULL || fixedlightlev >= 0);
|
||||
if (fixed)
|
||||
{
|
||||
palookupoffse[0] = dc_colormap;
|
||||
palookupoffse[1] = dc_colormap;
|
||||
palookupoffse[2] = dc_colormap;
|
||||
palookupoffse[3] = dc_colormap;
|
||||
palookuplight[0] = 0;
|
||||
palookuplight[1] = 0;
|
||||
palookuplight[2] = 0;
|
||||
palookuplight[3] = 0;
|
||||
}
|
||||
|
||||
if (fixedcolormap)
|
||||
R_SetColorMapLight(fixedcolormap, 0, 0);
|
||||
else
|
||||
R_SetColorMapLight(basecolormap, 0, 0);
|
||||
|
||||
for(; (x < x2) && (((size_t)pixel >> pixelshift) & 3); ++x, pixel += pixelsize)
|
||||
{
|
||||
light += rw_lightstep;
|
||||
y1ve[0] = uwal[x];//max(uwal[x],umost[x]);
|
||||
y2ve[0] = dwal[x];//min(dwal[x],dmost[x]);
|
||||
if (y2ve[0] <= y1ve[0]) continue;
|
||||
|
||||
if (!fixed)
|
||||
{ // calculate lighting
|
||||
R_SetColorMapLight(basecolormap, light, wallshade);
|
||||
}
|
||||
|
||||
dc_source = getcol (rw_pic, (lwal[x] + xoffset) >> FRACBITS);
|
||||
dc_dest = ylookup[y1ve[0]] * pixelsize + pixel;
|
||||
dc_count = y2ve[0] - y1ve[0];
|
||||
iscale = swal[x] * yrepeat;
|
||||
dc_iscale = xs_ToFixed(fracbits, iscale);
|
||||
dc_texturefrac = xs_ToFixed(fracbits, dc_texturemid + iscale * (y1ve[0] - CenterY + 0.5));
|
||||
|
||||
tmvline1();
|
||||
}
|
||||
|
||||
for(; x < x2-3; x += 4, pixel += 4 * pixelsize)
|
||||
{
|
||||
bad = 0;
|
||||
for (z = 3, dax = x+3; z >= 0; --z, --dax)
|
||||
{
|
||||
y1ve[z] = uwal[dax];
|
||||
y2ve[z] = dwal[dax];
|
||||
if (y2ve[z] <= y1ve[z]) { bad += 1<<z; continue; }
|
||||
|
||||
bufplce[z] = getcol (rw_pic, (lwal[dax] + xoffset) >> FRACBITS);
|
||||
iscale = swal[dax] * yrepeat;
|
||||
vince[z] = xs_ToFixed(fracbits, iscale);
|
||||
vplce[z] = xs_ToFixed(fracbits, dc_texturemid + vince[z] * (y1ve[z] - CenterY + 0.5));
|
||||
}
|
||||
if (bad == 15)
|
||||
{
|
||||
light += rw_lightstep * 4;
|
||||
continue;
|
||||
}
|
||||
|
||||
if (!fixed)
|
||||
{
|
||||
for (z = 0; z < 4; ++z)
|
||||
{
|
||||
light += rw_lightstep;
|
||||
if (r_swtruecolor)
|
||||
{
|
||||
palookupoffse[z] = basecolormapdata;
|
||||
palookuplight[z] = LIGHTSCALE(light, wallshade);
|
||||
}
|
||||
else
|
||||
{
|
||||
palookupoffse[z] = basecolormapdata + (GETPALOOKUP(light, wallshade) << COLORMAPSHIFT);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
u4 = MAX(MAX(y1ve[0],y1ve[1]),MAX(y1ve[2],y1ve[3]));
|
||||
d4 = MIN(MIN(y2ve[0],y2ve[1]),MIN(y2ve[2],y2ve[3]));
|
||||
|
||||
if ((bad != 0) || (u4 >= d4))
|
||||
{
|
||||
for (z = 0; z < 4; ++z)
|
||||
{
|
||||
if (!(bad & 1))
|
||||
{
|
||||
preptmvline1(vince[z],palookupoffse[z],palookuplight[z],y2ve[z]-y1ve[z],vplce[z],bufplce[z],(ylookup[y1ve[z]]+z)*pixelsize+pixel);
|
||||
tmvline1();
|
||||
}
|
||||
bad >>= 1;
|
||||
}
|
||||
continue;
|
||||
}
|
||||
|
||||
for (z = 0; z < 4; ++z)
|
||||
{
|
||||
if (u4 > y1ve[z])
|
||||
{
|
||||
preptmvline1(vince[z],palookupoffse[z],palookuplight[z],u4-y1ve[z],vplce[z],bufplce[z],(ylookup[y1ve[z]]+z)*pixelsize+pixel);
|
||||
vplce[z] = tmvline1();
|
||||
}
|
||||
}
|
||||
|
||||
if (d4 > u4)
|
||||
{
|
||||
dc_count = d4-u4;
|
||||
dc_dest = ylookup[u4]*pixelsize+pixel;
|
||||
tmvline4();
|
||||
}
|
||||
|
||||
BYTE *i = pixel+ylookup[d4]*pixelsize;
|
||||
for (z = 0; z < 4; ++z)
|
||||
{
|
||||
if (y2ve[z] > d4)
|
||||
{
|
||||
preptmvline1(vince[z],palookupoffse[0],palookuplight[0],y2ve[z]-d4,vplce[z],bufplce[z],i+z*pixelsize);
|
||||
tmvline1();
|
||||
}
|
||||
}
|
||||
}
|
||||
for(; x < x2; ++x, pixel += pixelsize)
|
||||
{
|
||||
light += rw_lightstep;
|
||||
y1ve[0] = uwal[x];
|
||||
y2ve[0] = dwal[x];
|
||||
if (y2ve[0] <= y1ve[0]) continue;
|
||||
|
||||
if (!fixed)
|
||||
{ // calculate lighting
|
||||
R_SetColorMapLight(basecolormap, light, wallshade);
|
||||
}
|
||||
|
||||
dc_source = getcol (rw_pic, (lwal[x] + xoffset) >> FRACBITS);
|
||||
dc_dest = ylookup[y1ve[0]] * pixelsize + pixel;
|
||||
dc_count = y2ve[0] - y1ve[0];
|
||||
iscale = swal[x] * yrepeat;
|
||||
dc_iscale = xs_ToFixed(fracbits, iscale);
|
||||
dc_texturefrac = xs_ToFixed(fracbits, dc_texturemid + iscale * (y1ve[0] - CenterY + 0.5));
|
||||
|
||||
tmvline1();
|
||||
}
|
||||
|
||||
//unclock(WallScanCycles);
|
||||
|
||||
NetUpdate ();
|
||||
call_wallscan(x1, x2, uwal, dwal, swal, lwal, yrepeat, true);
|
||||
}
|
||||
|
||||
//
|
||||
|
|
|
|||
Loading…
Reference in a new issue