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66 lines
1.6 KiB
C++
66 lines
1.6 KiB
C++
//
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// Copyright (C) 1993-1996 by id Software, Inc.
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//
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// This source is available for distribution and/or modification
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// only under the terms of the DOOM Source Code License as
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// published by id Software. All rights reserved.
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//
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// The source is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// FITNESS FOR A PARTICULAR PURPOSE. See the DOOM Source Code License
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// for more details.
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//
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#include <stddef.h>
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#include "r_walldrawer.h"
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namespace swrenderer
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{
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void WallDrawerArgs::SetDest(int x, int y)
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{
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auto viewport = RenderViewport::Instance();
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dc_dest = viewport->GetDest(x, y);
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dc_dest_y = y;
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}
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void WallDrawerArgs::DrawColumn()
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{
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(RenderViewport::Instance()->Drawers()->*wallfunc)(*this);
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}
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void WallDrawerArgs::SetStyle(bool masked, bool additive, fixed_t alpha)
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{
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if (alpha < OPAQUE || additive)
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{
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if (!additive)
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{
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wallfunc = &SWPixelFormatDrawers::DrawWallAddColumn;
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dc_srcblend = Col2RGB8[alpha >> 10];
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dc_destblend = Col2RGB8[(OPAQUE - alpha) >> 10];
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dc_srcalpha = alpha;
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dc_destalpha = OPAQUE - alpha;
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}
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else
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{
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wallfunc = &SWPixelFormatDrawers::DrawWallAddClampColumn;
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dc_srcblend = Col2RGB8_LessPrecision[alpha >> 10];
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dc_destblend = Col2RGB8_LessPrecision[FRACUNIT >> 10];
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dc_srcalpha = alpha;
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dc_destalpha = FRACUNIT;
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}
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}
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else if (masked)
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{
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wallfunc = &SWPixelFormatDrawers::DrawWallMaskedColumn;
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}
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else
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{
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wallfunc = &SWPixelFormatDrawers::DrawWallColumn;
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}
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}
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bool WallDrawerArgs::IsMaskedDrawer() const
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{
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return wallfunc == &SWPixelFormatDrawers::DrawWallMaskedColumn;
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}
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}
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