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- Correctly redid commit 34d551fe1f.
This commit is contained in:
Rachael Alexanderson
parent
15cf9d36a9
commit
2b5f9eebba
1 changed files with 314 additions and 140 deletions
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@ -50,63 +50,157 @@ namespace swrenderer
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extern FTexture *rw_pic;
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extern int wallshade;
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struct WallscanSampler
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{
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WallscanSampler() { }
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WallscanSampler(int y1, float swal, double yrepeat, fixed_t xoffset, FTexture *texture, const BYTE*(*getcol)(FTexture *texture, int x));
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WallscanSampler(int y1, float swal, double yrepeat, fixed_t xoffset, double xmagnitude, FTexture *texture, const BYTE*(*getcol)(FTexture *texture, int x));
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uint32_t uv_pos;
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uint32_t uv_step;
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uint32_t uv_max;
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const BYTE *source;
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const BYTE *source2;
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uint32_t texturefracx;
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uint32_t height;
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};
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WallscanSampler::WallscanSampler(int y1, float swal, double yrepeat, fixed_t xoffset, FTexture *texture, const BYTE*(*getcol)(FTexture *texture, int x))
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WallscanSampler::WallscanSampler(int y1, float swal, double yrepeat, fixed_t xoffset, double xmagnitude, FTexture *texture, const BYTE*(*getcol)(FTexture *texture, int x))
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{
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height = texture->GetHeight();
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xoffset += FLOAT2FIXED(xmagnitude * 0.5);
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int uv_fracbits = 32 - texture->HeightBits;
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if (uv_fracbits != 32)
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if (!r_swtruecolor)
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{
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uv_max = height << uv_fracbits;
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height = texture->GetHeight();
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// Find start uv in [0-base_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 uv_stepd = swal * yrepeat;
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double v = (dc_texturemid + uv_stepd * (y1 - CenterY + 0.5)) / height;
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v = v - floor(v);
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v *= height;
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v *= (1 << uv_fracbits);
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int uv_fracbits = 32 - texture->HeightBits;
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if (uv_fracbits != 32)
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{
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uv_max = height << uv_fracbits;
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uv_pos = (uint32_t)v;
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uv_step = xs_ToFixed(uv_fracbits, uv_stepd);
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if (uv_step == 0) // To prevent divide by zero elsewhere
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uv_step = 1;
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// Find start uv in [0-base_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 uv_stepd = swal * yrepeat;
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double v = (dc_texturemid + uv_stepd * (y1 - CenterY + 0.5)) / height;
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v = v - floor(v);
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v *= height;
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v *= (1 << uv_fracbits);
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uv_pos = (uint32_t)v;
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uv_step = xs_ToFixed(uv_fracbits, uv_stepd);
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if (uv_step == 0) // To prevent divide by zero elsewhere
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uv_step = 1;
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}
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else
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{ // Hack for one pixel tall textures
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uv_pos = 0;
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uv_step = 0;
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uv_max = 1;
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}
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source = getcol(texture, xoffset >> FRACBITS);
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source2 = nullptr;
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texturefracx = 0;
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}
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else
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{ // Hack for one pixel tall textures
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uv_pos = 0;
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uv_step = 0;
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uv_max = 1;
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}
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{
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// Normalize to 0-1 range:
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double uv_stepd = swal * yrepeat;
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double v = (dc_texturemid + uv_stepd * (y1 - CenterY + 0.5)) / texture->GetHeight();
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v = v - floor(v);
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double v_step = uv_stepd / texture->GetHeight();
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source = getcol(texture, xoffset >> FRACBITS);
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if (isnan(v) || isnan(v_step)) // this should never happen, but it apparently does..
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{
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uv_stepd = 0.0;
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v = 0.0;
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v_step = 0.0;
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}
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// Convert to uint32:
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uv_pos = (uint32_t)(v * 0x100000000LL);
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uv_step = (uint32_t)(v_step * 0x100000000LL);
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uv_max = 0;
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// Texture mipmap and filter selection:
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if (getcol != R_GetColumn)
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{
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source = getcol(texture, xoffset >> FRACBITS);
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source2 = nullptr;
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height = texture->GetHeight();
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texturefracx = 0;
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}
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else
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{
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double ymagnitude = fabs(uv_stepd);
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double magnitude = MAX(ymagnitude, xmagnitude);
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double min_lod = -1000.0;
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double lod = MAX(log2(magnitude) + r_lod_bias, min_lod);
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bool magnifying = lod < 0.0f;
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int mipmap_offset = 0;
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int mip_width = texture->GetWidth();
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int mip_height = texture->GetHeight();
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if (r_mipmap && texture->Mipmapped() && mip_width > 1 && mip_height > 1)
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{
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uint32_t xpos = (uint32_t)((((uint64_t)xoffset) << FRACBITS) / mip_width);
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int level = (int)lod;
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while (level > 0 && mip_width > 1 && mip_height > 1)
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{
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mipmap_offset += mip_width * mip_height;
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level--;
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mip_width = MAX(mip_width >> 1, 1);
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mip_height = MAX(mip_height >> 1, 1);
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}
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xoffset = (xpos >> FRACBITS) * mip_width;
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}
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const uint32_t *pixels = texture->GetPixelsBgra() + mipmap_offset;
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bool filter_nearest = (magnifying && !r_magfilter) || (!magnifying && !r_minfilter);
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if (filter_nearest)
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{
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int tx = (xoffset >> FRACBITS) % mip_width;
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if (tx < 0)
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tx += mip_width;
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source = (BYTE*)(pixels + tx * mip_height);
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source2 = nullptr;
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height = mip_height;
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texturefracx = 0;
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}
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else
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{
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xoffset -= FRACUNIT / 2;
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int tx0 = (xoffset >> FRACBITS) % mip_width;
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if (tx0 < 0)
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tx0 += mip_width;
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int tx1 = (tx0 + 1) % mip_width;
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source = (BYTE*)(pixels + tx0 * mip_height);
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source2 = (BYTE*)(pixels + tx1 * mip_height);
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height = mip_height;
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texturefracx = (xoffset >> (FRACBITS - 4)) & 15;
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}
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}
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}
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}
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// Draw a column with support for non-power-of-two ranges
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void wallscan_drawcol1(int x, int y1, int y2, WallscanSampler &sampler, DWORD(*draw1column)())
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{
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if (sampler.uv_max == 0 || sampler.uv_step == 0) // power of two
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if (r_swtruecolor)
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{
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int count = y2 - y1;
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dc_source = sampler.source;
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dc_dest = (ylookup[y1] + x) + dc_destorg;
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dc_source2 = sampler.source2;
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dc_texturefracx = sampler.texturefracx;
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dc_dest = (ylookup[y1] + x) * 4 + dc_destorg;
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dc_count = count;
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dc_iscale = sampler.uv_step;
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dc_texturefrac = sampler.uv_pos;
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dc_textureheight = sampler.height;
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draw1column();
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uint64_t step64 = sampler.uv_step;
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@ -115,43 +209,68 @@ void wallscan_drawcol1(int x, int y1, int y2, WallscanSampler &sampler, DWORD(*d
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}
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else
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{
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uint32_t uv_pos = sampler.uv_pos;
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uint32_t left = y2 - y1;
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while (left > 0)
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if (sampler.uv_max == 0 || sampler.uv_step == 0) // power of two
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{
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uint32_t available = sampler.uv_max - uv_pos;
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uint32_t next_uv_wrap = available / sampler.uv_step;
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if (available % sampler.uv_step != 0)
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next_uv_wrap++;
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uint32_t count = MIN(left, next_uv_wrap);
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int count = y2 - y1;
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dc_source = sampler.source;
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dc_source2 = sampler.source2;
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dc_texturefracx = sampler.texturefracx;
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dc_dest = (ylookup[y1] + x) + dc_destorg;
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dc_count = count;
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dc_iscale = sampler.uv_step;
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dc_texturefrac = uv_pos;
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dc_texturefrac = sampler.uv_pos;
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draw1column();
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left -= count;
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uv_pos += sampler.uv_step * count;
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if (uv_pos >= sampler.uv_max)
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uv_pos -= sampler.uv_max;
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uint64_t step64 = sampler.uv_step;
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uint64_t pos64 = sampler.uv_pos;
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sampler.uv_pos = (uint32_t)(pos64 + step64 * count);
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}
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else
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{
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uint32_t uv_pos = sampler.uv_pos;
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sampler.uv_pos = uv_pos;
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uint32_t left = y2 - y1;
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while (left > 0)
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{
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uint32_t available = sampler.uv_max - uv_pos;
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uint32_t next_uv_wrap = available / sampler.uv_step;
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if (available % sampler.uv_step != 0)
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next_uv_wrap++;
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uint32_t count = MIN(left, next_uv_wrap);
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dc_source = sampler.source;
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dc_source2 = sampler.source2;
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dc_texturefracx = sampler.texturefracx;
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dc_dest = (ylookup[y1] + x) + dc_destorg;
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dc_count = count;
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dc_iscale = sampler.uv_step;
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dc_texturefrac = uv_pos;
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draw1column();
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left -= count;
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uv_pos += sampler.uv_step * count;
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if (uv_pos >= sampler.uv_max)
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uv_pos -= sampler.uv_max;
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}
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sampler.uv_pos = uv_pos;
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}
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}
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}
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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, WallscanSampler *sampler, void(*draw4columns)())
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{
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if (sampler[0].uv_max == 0 || sampler[0].uv_step == 0) // power of two, no wrap handling needed
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if (r_swtruecolor)
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{
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int count = y2 - y1;
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for (int i = 0; i < 4; i++)
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{
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bufplce[i] = sampler[i].source;
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bufplce2[i] = sampler[i].source2;
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buftexturefracx[i] = sampler[i].texturefracx;
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bufheight[i] = sampler[i].height;
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vplce[i] = sampler[i].uv_pos;
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vince[i] = sampler[i].uv_step;
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@ -159,50 +278,74 @@ void wallscan_drawcol4(int x, int y1, int y2, WallscanSampler *sampler, void(*dr
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uint64_t pos64 = sampler[i].uv_pos;
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sampler[i].uv_pos = (uint32_t)(pos64 + step64 * count);
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}
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dc_dest = (ylookup[y1] + x) + dc_destorg;
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dc_dest = (ylookup[y1] + x) * 4 + dc_destorg;
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dc_count = count;
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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) + dc_destorg;
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for (int i = 0; i < 4; i++)
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if (sampler[0].uv_max == 0 || sampler[0].uv_step == 0) // power of two, no wrap handling needed
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{
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bufplce[i] = sampler[i].source;
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}
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uint32_t 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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uint32_t count = left;
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for (int i = 0; i < 4; i++)
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{
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uint32_t available = sampler[i].uv_max - sampler[i].uv_pos;
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uint32_t next_uv_wrap = available / sampler[i].uv_step;
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if (available % sampler[i].uv_step != 0)
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next_uv_wrap++;
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count = MIN(next_uv_wrap, count);
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}
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// Draw until that column wraps
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int count = y2 - y1;
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for (int i = 0; i < 4; i++)
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{
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bufplce[i] = sampler[i].source;
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bufplce2[i] = sampler[i].source2;
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buftexturefracx[i] = sampler[i].texturefracx;
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vplce[i] = sampler[i].uv_pos;
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vince[i] = sampler[i].uv_step;
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uint64_t step64 = sampler[i].uv_step;
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uint64_t pos64 = sampler[i].uv_pos;
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sampler[i].uv_pos = (uint32_t)(pos64 + step64 * count);
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}
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dc_dest = (ylookup[y1] + x) + dc_destorg;
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dc_count = count;
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draw4columns();
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// Wrap the uv position
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}
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else
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{
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dc_dest = (ylookup[y1] + x) + dc_destorg;
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for (int i = 0; i < 4; i++)
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{
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sampler[i].uv_pos += sampler[i].uv_step * count;
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if (sampler[i].uv_pos >= sampler[i].uv_max)
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sampler[i].uv_pos -= sampler[i].uv_max;
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bufplce[i] = sampler[i].source;
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bufplce2[i] = sampler[i].source2;
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buftexturefracx[i] = sampler[i].texturefracx;
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}
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left -= count;
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uint32_t 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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uint32_t count = left;
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for (int i = 0; i < 4; i++)
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{
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uint32_t available = sampler[i].uv_max - sampler[i].uv_pos;
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uint32_t next_uv_wrap = available / sampler[i].uv_step;
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if (available % sampler[i].uv_step != 0)
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next_uv_wrap++;
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count = MIN(next_uv_wrap, count);
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}
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// Draw until that column wraps
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for (int i = 0; i < 4; i++)
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{
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vplce[i] = sampler[i].uv_pos;
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vince[i] = sampler[i].uv_step;
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}
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dc_count = count;
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draw4columns();
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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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sampler[i].uv_pos += sampler[i].uv_step * count;
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if (sampler[i].uv_pos >= sampler[i].uv_max)
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sampler[i].uv_pos -= sampler[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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}
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@ -231,7 +374,7 @@ void wallscan_any(
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DWORD(*draw1column)();
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void(*draw4columns)();
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setupwallscan(fracbits, draw1column, draw4columns);
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setupwallscan(r_swtruecolor ? FRACBITS : fracbits, draw1column, draw4columns);
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bool fixed = (fixedcolormap != NULL || fixedlightlev >= 0);
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if (fixed)
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@ -240,12 +383,16 @@ void wallscan_any(
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palookupoffse[1] = dc_colormap;
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palookupoffse[2] = dc_colormap;
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palookupoffse[3] = dc_colormap;
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palookuplight[0] = 0;
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palookuplight[1] = 0;
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palookuplight[2] = 0;
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palookuplight[3] = 0;
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}
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if (fixedcolormap)
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dc_colormap = fixedcolormap;
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R_SetColorMapLight(fixedcolormap, 0, 0);
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else
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dc_colormap = basecolormap->Maps;
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R_SetColorMapLight(basecolormap, 0, 0);
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float light = rw_light;
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@ -253,6 +400,8 @@ void wallscan_any(
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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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double xmagnitude = 1.0;
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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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@ -262,9 +411,11 @@ void wallscan_any(
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continue;
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if (!fixed)
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dc_colormap = basecolormap->Maps + (GETPALOOKUP(light, wallshade) << COLORMAPSHIFT);
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R_SetColorMapLight(basecolormap, light, wallshade);
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WallscanSampler sampler(y1, swal[x], yrepeat, lwal[x] + xoffset, rw_pic, getcol);
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if (x + 1 < x2) xmagnitude = fabs(FIXED2DBL(lwal[x + 1]) - FIXED2DBL(lwal[x]));
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WallscanSampler sampler(y1, swal[x], yrepeat, lwal[x] + xoffset, xmagnitude, rw_pic, getcol);
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wallscan_drawcol1(x, y1, y2, sampler, draw1column);
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}
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@ -284,7 +435,10 @@ void wallscan_any(
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WallscanSampler sampler[4];
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for (int i = 0; i < 4; i++)
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sampler[i] = WallscanSampler(y1[i], swal[x + i], yrepeat, lwal[x + i] + xoffset, rw_pic, getcol);
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{
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if (x + i + 1 < x2) xmagnitude = fabs(FIXED2DBL(lwal[x + i + 1]) - FIXED2DBL(lwal[x + i]));
|
||||
sampler[i] = WallscanSampler(y1[i], swal[x + i], yrepeat, lwal[x + i] + xoffset, xmagnitude, rw_pic, getcol);
|
||||
}
|
||||
|
||||
// Figure out where we vertically can start and stop drawing 4 columns in one go
|
||||
int middle_y1 = y1[0];
|
||||
|
|
@ -297,13 +451,16 @@ void wallscan_any(
|
|||
|
||||
// If we got an empty column in our set we cannot draw 4 columns in one go:
|
||||
bool empty_column_in_set = false;
|
||||
int bilinear_count = 0;
|
||||
for (int i = 0; i < 4; i++)
|
||||
{
|
||||
if (y2[i] <= y1[i])
|
||||
empty_column_in_set = true;
|
||||
if (sampler[i].source2)
|
||||
bilinear_count++;
|
||||
}
|
||||
|
||||
if (empty_column_in_set || middle_y2 <= middle_y1)
|
||||
if (empty_column_in_set || middle_y2 <= middle_y1 || (bilinear_count > 0 && bilinear_count < 4))
|
||||
{
|
||||
for (int i = 0; i < 4; i++)
|
||||
{
|
||||
|
|
@ -311,7 +468,7 @@ void wallscan_any(
|
|||
continue;
|
||||
|
||||
if (!fixed)
|
||||
dc_colormap = basecolormap->Maps + (GETPALOOKUP(lights[i], wallshade) << COLORMAPSHIFT);
|
||||
R_SetColorMapLight(basecolormap, lights[i], wallshade);
|
||||
wallscan_drawcol1(x + i, y1[i], y2[i], sampler[i], draw1column);
|
||||
}
|
||||
continue;
|
||||
|
|
@ -321,7 +478,7 @@ void wallscan_any(
|
|||
for (int i = 0; i < 4; i++)
|
||||
{
|
||||
if (!fixed)
|
||||
dc_colormap = basecolormap->Maps + (GETPALOOKUP(lights[i], wallshade) << COLORMAPSHIFT);
|
||||
R_SetColorMapLight(basecolormap, lights[i], wallshade);
|
||||
|
||||
if (y1[i] < middle_y1)
|
||||
wallscan_drawcol1(x + i, y1[i], middle_y1, sampler[i], draw1column);
|
||||
|
|
@ -332,7 +489,16 @@ void wallscan_any(
|
|||
{
|
||||
for (int i = 0; i < 4; i++)
|
||||
{
|
||||
palookupoffse[i] = basecolormap->Maps + (GETPALOOKUP(lights[i], wallshade) << COLORMAPSHIFT);
|
||||
if (r_swtruecolor)
|
||||
{
|
||||
palookupoffse[i] = basecolormap->Maps;
|
||||
palookuplight[i] = LIGHTSCALE(lights[i], wallshade);
|
||||
}
|
||||
else
|
||||
{
|
||||
palookupoffse[i] = basecolormap->Maps + (GETPALOOKUP(lights[i], wallshade) << COLORMAPSHIFT);
|
||||
palookuplight[i] = 0;
|
||||
}
|
||||
}
|
||||
}
|
||||
wallscan_drawcol4(x, middle_y1, middle_y2, sampler, draw4columns);
|
||||
|
|
@ -341,7 +507,7 @@ void wallscan_any(
|
|||
for (int i = 0; i < 4; i++)
|
||||
{
|
||||
if (!fixed)
|
||||
dc_colormap = basecolormap->Maps + (GETPALOOKUP(lights[i], wallshade) << COLORMAPSHIFT);
|
||||
R_SetColorMapLight(basecolormap, lights[i], wallshade);
|
||||
|
||||
if (middle_y2 < y2[i])
|
||||
wallscan_drawcol1(x + i, middle_y2, y2[i], sampler[i], draw1column);
|
||||
|
|
@ -357,13 +523,15 @@ void wallscan_any(
|
|||
continue;
|
||||
|
||||
if (!fixed)
|
||||
dc_colormap = basecolormap->Maps + (GETPALOOKUP(light, wallshade) << COLORMAPSHIFT);
|
||||
R_SetColorMapLight(basecolormap, light, wallshade);
|
||||
|
||||
WallscanSampler sampler(y1, swal[x], yrepeat, lwal[x] + xoffset, rw_pic, getcol);
|
||||
if (x + 1 < x2) xmagnitude = fabs(FIXED2DBL(lwal[x + 1]) - FIXED2DBL(lwal[x]));
|
||||
|
||||
WallscanSampler sampler(y1, swal[x], yrepeat, lwal[x] + xoffset, xmagnitude, rw_pic, getcol);
|
||||
wallscan_drawcol1(x, y1, y2, sampler, draw1column);
|
||||
}
|
||||
|
||||
NetUpdate();
|
||||
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))
|
||||
|
|
@ -376,7 +544,7 @@ void wallscan(int x1, int x2, short *uwal, short *dwal, float *swal, fixed_t *lw
|
|||
});
|
||||
}
|
||||
|
||||
void maskwallscan(int x1, int x2, short *uwal, short *dwal, float *swal, fixed_t *lwal, double yrepeat, const BYTE *(*getcol)(FTexture *tex, int x) = R_GetColumn)
|
||||
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.
|
||||
{
|
||||
|
|
@ -393,7 +561,7 @@ void maskwallscan(int x1, int x2, short *uwal, short *dwal, float *swal, fixed_t
|
|||
}
|
||||
}
|
||||
|
||||
void transmaskwallscan(int x1, int x2, short *uwal, short *dwal, float *swal, fixed_t *lwal, double yrepeat, const BYTE *(*getcol)(FTexture *tex, int x) = R_GetColumn)
|
||||
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)();
|
||||
|
|
@ -454,7 +622,7 @@ void wallscan_striped (int x1, int x2, short *uwal, short *dwal, float *swal, fi
|
|||
wallshade = startshade;
|
||||
}
|
||||
|
||||
void call_wallscan(int x1, int x2, short *uwal, short *dwal, float *swal, fixed_t *lwal, double yrepeat, bool mask)
|
||||
static void call_wallscan(int x1, int x2, short *uwal, short *dwal, float *swal, fixed_t *lwal, double yrepeat, bool mask)
|
||||
{
|
||||
if (mask)
|
||||
{
|
||||
|
|
@ -493,67 +661,74 @@ void call_wallscan(int x1, int x2, short *uwal, short *dwal, float *swal, fixed_
|
|||
|
||||
void wallscan_np2(int x1, int x2, short *uwal, short *dwal, float *swal, fixed_t *lwal, double yrepeat, double top, double bot, bool mask)
|
||||
{
|
||||
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);
|
||||
if (!r_np2)
|
||||
{
|
||||
call_wallscan(x1, x2, uwal, 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)
|
||||
{
|
||||
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)
|
||||
{
|
||||
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;
|
||||
}
|
||||
partition -= scaledtexheight;
|
||||
dc_texturemid -= texheight;
|
||||
}
|
||||
call_wallscan(x1, x2, uwal, down, swal, lwal, yrepeat, mask);
|
||||
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);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
void wallscan_np2_ds(drawseg_t *ds, int x1, int x2, short *uwal, short *dwal, float *swal, fixed_t *lwal, double yrepeat)
|
||||
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)
|
||||
{
|
||||
|
|
@ -579,5 +754,4 @@ void wallscan_np2_ds(drawseg_t *ds, int x1, int x2, short *uwal, short *dwal, fl
|
|||
}
|
||||
}
|
||||
|
||||
|
||||
}
|
||||
Loading…
Reference in a new issue