mirror of
https://github.com/ZDoom/qzdoom-gpl.git
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83 lines
2.5 KiB
C++
83 lines
2.5 KiB
C++
/*
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** DrawSpan code generation
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** Copyright (c) 2016 Magnus Norddahl
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**
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** This software is provided 'as-is', without any express or implied
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** warranty. In no event will the authors be held liable for any damages
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** arising from the use of this software.
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**
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** Permission is granted to anyone to use this software for any purpose,
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** including commercial applications, and to alter it and redistribute it
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** freely, subject to the following restrictions:
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**
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** 1. The origin of this software must not be misrepresented; you must not
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** claim that you wrote the original software. If you use this software
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** in a product, an acknowledgment in the product documentation would be
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** appreciated but is not required.
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** 2. Altered source versions must be plainly marked as such, and must not be
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** misrepresented as being the original software.
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** 3. This notice may not be removed or altered from any source distribution.
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**
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*/
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#pragma once
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#include "drawercodegen.h"
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enum class DrawSpanVariant
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{
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Opaque,
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Masked,
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Translucent,
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MaskedTranslucent,
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AddClamp,
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MaskedAddClamp
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};
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class DrawSpanCodegen : public DrawerCodegen
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{
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public:
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void Generate(DrawSpanVariant variant, SSAValue args);
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private:
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void LoopShade(DrawSpanVariant variant, bool isSimpleShade);
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void LoopFilter(DrawSpanVariant variant, bool isSimpleShade, bool isNearestFilter);
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SSAInt Loop4x(DrawSpanVariant variant, bool isSimpleShade, bool isNearestFilter, bool is64x64);
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void Loop(SSAInt start, DrawSpanVariant variant, bool isSimpleShade, bool isNearestFilter, bool is64x64);
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SSAVec4i Sample(SSAInt xfrac, SSAInt yfrac, bool isNearestFilter, bool is64x64);
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SSAVec4i SampleLinear(SSAUBytePtr texture, SSAInt xfrac, SSAInt yfrac, SSAInt xbits, SSAInt ybits);
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SSAVec4i Shade(SSAVec4i fg, bool isSimpleShade);
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SSAVec4i Blend(SSAVec4i fg, SSAVec4i bg, DrawSpanVariant variant);
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SSAStack<SSAInt> stack_index, stack_xfrac, stack_yfrac, stack_light_index;
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SSAStack<SSAVec4i> stack_lit_color;
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SSAStack<SSAFloat> stack_viewpos_x;
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SSAUBytePtr destorg;
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SSAUBytePtr source;
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SSAInt destpitch;
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SSAInt xstep;
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SSAInt ystep;
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SSAInt x1;
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SSAInt x2;
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SSAInt y;
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SSAInt xbits;
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SSAInt ybits;
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SSAInt light;
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SSAInt srcalpha;
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SSAInt destalpha;
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SSAInt count;
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SSAUBytePtr data;
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SSAInt yshift;
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SSAInt xshift;
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SSAInt xmask;
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SSABool is_64x64;
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SSABool is_simple_shade;
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SSABool is_nearest_filter;
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SSAShadeConstants shade_constants;
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SSAFloat start_viewpos_x, step_viewpos_x;
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SSAValue dynlights; // TriLight*
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SSAInt num_dynlights;
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SSAFloat viewpos_x;
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};
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