qzdoom/src/r_draw_rgba.cpp

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// Emacs style mode select -*- C++ -*-
//-----------------------------------------------------------------------------
//
// $Id:$
//
// Copyright (C) 1993-1996 by id Software, Inc.
//
// This source is available for distribution and/or modification
// only under the terms of the DOOM Source Code License as
// published by id Software. All rights reserved.
//
// The source is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// FITNESS FOR A PARTICULAR PURPOSE. See the DOOM Source Code License
// for more details.
//
// $Log:$
//
// DESCRIPTION:
// True color span/column drawing functions.
//
//-----------------------------------------------------------------------------
#include <stddef.h>
#include "templates.h"
#include "doomdef.h"
#include "i_system.h"
#include "w_wad.h"
#include "r_local.h"
#include "v_video.h"
#include "doomstat.h"
#include "st_stuff.h"
#include "g_game.h"
#include "g_level.h"
#include "r_data/r_translate.h"
#include "v_palette.h"
#include "r_data/colormaps.h"
#include "r_plane.h"
#include "r_draw_rgba.h"
#include "gi.h"
#include "stats.h"
#include "x86.h"
#ifndef NO_SSE
#include <emmintrin.h>
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#include <immintrin.h>
#endif
#include <vector>
extern "C" short spanend[MAXHEIGHT];
extern float rw_light;
extern float rw_lightstep;
extern int wallshade;
// Use multiple threads when drawing
CVAR(Bool, r_multithreaded, true, 0);
// Use linear filtering when scaling up
CVAR(Bool, r_magfilter, false, CVAR_ARCHIVE | CVAR_GLOBALCONFIG);
// Use linear filtering when scaling down
CVAR(Bool, r_minfilter, true, CVAR_ARCHIVE | CVAR_GLOBALCONFIG);
// Use mipmapped textures
CVAR(Bool, r_mipmap, true, CVAR_ARCHIVE | CVAR_GLOBALCONFIG);
#ifndef NO_SSE
// Generate SSE drawers:
#define VecCommand(name) name##_SSE_Command
#define VEC_SHADE_SIMPLE_INIT SSE_SHADE_SIMPLE_INIT
#define VEC_SHADE_SIMPLE_INIT4 SSE_SHADE_SIMPLE_INIT4
#define VEC_SHADE_SIMPLE SSE_SHADE_SIMPLE
#define VEC_SHADE_INIT SSE_SHADE_INIT
#define VEC_SHADE_INIT4 SSE_SHADE_INIT4
#define VEC_SHADE SSE_SHADE
#include "r_draw_rgba_sse.h"
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/*
// Generate AVX drawers:
#undef VecCommand
#undef VEC_SHADE_SIMPLE_INIT
#undef VEC_SHADE_SIMPLE_INIT4
#undef VEC_SHADE_SIMPLE
#undef VEC_SHADE_INIT
#undef VEC_SHADE_INIT4
#undef VEC_SHADE
#define VecCommand(name) name##_AVX_Command
#define VEC_SHADE_SIMPLE_INIT AVX_LINEAR_SHADE_SIMPLE_INIT
#define VEC_SHADE_SIMPLE_INIT4 AVX_LINEAR_SHADE_SIMPLE_INIT4
#define VEC_SHADE_SIMPLE AVX_LINEAR_SHADE_SIMPLE
#define VEC_SHADE_INIT AVX_LINEAR_SHADE_INIT
#define VEC_SHADE_INIT4 AVX_LINEAR_SHADE_INIT4
#define VEC_SHADE AVX_LINEAR_SHADE
#include "r_draw_rgba_sse.h"
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*/
#endif
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/////////////////////////////////////////////////////////////////////////////
DrawerCommandQueue *DrawerCommandQueue::Instance()
{
static DrawerCommandQueue queue;
return &queue;
}
DrawerCommandQueue::~DrawerCommandQueue()
{
StopThreads();
}
void* DrawerCommandQueue::AllocMemory(size_t size)
{
// Make sure allocations remain 16-byte aligned
size = (size + 15) / 16 * 16;
auto queue = Instance();
if (queue->memorypool_pos + size > memorypool_size)
return nullptr;
void *data = queue->memorypool + queue->memorypool_pos;
queue->memorypool_pos += size;
return data;
}
void DrawerCommandQueue::Begin()
{
auto queue = Instance();
queue->Finish();
queue->threaded_render++;
}
void DrawerCommandQueue::End()
{
auto queue = Instance();
queue->Finish();
if (queue->threaded_render > 0)
queue->threaded_render--;
}
void DrawerCommandQueue::WaitForWorkers()
{
Instance()->Finish();
}
void DrawerCommandQueue::Finish()
{
auto queue = Instance();
if (queue->commands.empty())
return;
// Give worker threads something to do:
std::unique_lock<std::mutex> start_lock(queue->start_mutex);
queue->active_commands.swap(queue->commands);
queue->run_id++;
start_lock.unlock();
queue->StartThreads();
queue->start_condition.notify_all();
// Do one thread ourselves:
DrawerThread thread;
thread.core = 0;
thread.num_cores = queue->threads.size() + 1;
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for (int pass = 0; pass < queue->num_passes; pass++)
{
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thread.pass_start_y = pass * queue->rows_in_pass;
thread.pass_end_y = (pass + 1) * queue->rows_in_pass;
if (pass + 1 == queue->num_passes)
thread.pass_end_y = MAX(thread.pass_end_y, MAXHEIGHT);
size_t size = queue->active_commands.size();
for (size_t i = 0; i < size; i++)
{
auto &command = queue->active_commands[i];
command->Execute(&thread);
}
}
// Wait for everyone to finish:
std::unique_lock<std::mutex> end_lock(queue->end_mutex);
queue->end_condition.wait(end_lock, [&]() { return queue->finished_threads == queue->threads.size(); });
// Clean up batch:
for (auto &command : queue->active_commands)
command->~DrawerCommand();
queue->active_commands.clear();
queue->memorypool_pos = 0;
queue->finished_threads = 0;
}
void DrawerCommandQueue::StartThreads()
{
if (!threads.empty())
return;
int num_threads = std::thread::hardware_concurrency();
if (num_threads == 0)
num_threads = 4;
threads.resize(num_threads - 1);
for (int i = 0; i < num_threads - 1; i++)
{
DrawerCommandQueue *queue = this;
DrawerThread *thread = &threads[i];
thread->core = i + 1;
thread->num_cores = num_threads;
thread->thread = std::thread([=]()
{
int run_id = 0;
while (true)
{
// Wait until we are signalled to run:
std::unique_lock<std::mutex> start_lock(queue->start_mutex);
queue->start_condition.wait(start_lock, [&]() { return queue->run_id != run_id || queue->shutdown_flag; });
if (queue->shutdown_flag)
break;
run_id = queue->run_id;
start_lock.unlock();
// Do the work:
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for (int pass = 0; pass < queue->num_passes; pass++)
{
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thread->pass_start_y = pass * queue->rows_in_pass;
thread->pass_end_y = (pass + 1) * queue->rows_in_pass;
if (pass + 1 == queue->num_passes)
thread->pass_end_y = MAX(thread->pass_end_y, MAXHEIGHT);
size_t size = queue->active_commands.size();
for (size_t i = 0; i < size; i++)
{
auto &command = queue->active_commands[i];
command->Execute(thread);
}
}
// Notify main thread that we finished:
std::unique_lock<std::mutex> end_lock(queue->end_mutex);
queue->finished_threads++;
end_lock.unlock();
queue->end_condition.notify_all();
}
});
}
}
void DrawerCommandQueue::StopThreads()
{
std::unique_lock<std::mutex> lock(start_mutex);
shutdown_flag = true;
lock.unlock();
start_condition.notify_all();
for (auto &thread : threads)
thread.thread.join();
threads.clear();
lock.lock();
shutdown_flag = false;
}
/////////////////////////////////////////////////////////////////////////////
class DrawerColumnCommand : public DrawerCommand
{
public:
int _count;
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BYTE * RESTRICT _dest;
int _pitch;
DWORD _iscale;
DWORD _texturefrac;
DrawerColumnCommand()
{
_count = dc_count;
_dest = dc_dest;
_iscale = dc_iscale;
_texturefrac = dc_texturefrac;
_pitch = dc_pitch;
}
class LoopIterator
{
public:
int count;
uint32_t *dest;
int pitch;
fixed_t fracstep;
fixed_t frac;
LoopIterator(DrawerColumnCommand *command, DrawerThread *thread)
{
count = thread->count_for_thread(command->_dest_y, command->_count);
if (count <= 0)
return;
dest = thread->dest_for_thread(command->_dest_y, command->_pitch, (uint32_t*)command->_dest);
pitch = command->_pitch * thread->num_cores;
fracstep = command->_iscale * thread->num_cores;
frac = command->_texturefrac + command->_iscale * thread->skipped_by_thread(command->_dest_y);
}
uint32_t sample_index()
{
return frac >> FRACBITS;
}
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explicit operator bool()
{
return count > 0;
}
bool next()
{
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dest += pitch;
frac += fracstep;
return (--count) != 0;
}
};
};
class DrawColumnRGBACommand : public DrawerColumnCommand
{
uint32_t _light;
const BYTE * RESTRICT _source;
ShadeConstants _shade_constants;
BYTE * RESTRICT _colormap;
public:
DrawColumnRGBACommand()
{
_light = LightBgra::calc_light_multiplier(dc_light);
_shade_constants = dc_shade_constants;
_source = dc_source;
_colormap = dc_colormap;
}
void Execute(DrawerThread *thread) override
{
LoopIterator loop(this, thread);
if (!loop) return;
do
{
uint32_t fg = LightBgra::shade_pal_index(_colormap[_source[loop.sample_index()]], _light, _shade_constants);
*loop.dest = BlendBgra::copy(fg);
} while (loop.next());
}
};
class FillColumnRGBACommand : public DrawerColumnCommand
{
uint32_t _color;
public:
FillColumnRGBACommand()
{
uint32_t light = LightBgra::calc_light_multiplier(dc_light);
_color = LightBgra::shade_pal_index_simple(dc_color, light);
}
void Execute(DrawerThread *thread) override
{
LoopIterator loop(this, thread);
if (!loop) return;
do
{
*loop.dest = BlendBgra::copy(_color);
} while (loop.next());
}
};
class FillAddColumnRGBACommand : public DrawerColumnCommand
{
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uint32_t _srccolor;
public:
FillAddColumnRGBACommand()
{
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_srccolor = dc_srccolor_bgra;
}
void Execute(DrawerThread *thread) override
{
LoopIterator loop(this, thread);
if (!loop) return;
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uint32_t alpha = APART(_srccolor);
alpha += alpha >> 7;
do
{
*loop.dest = BlendBgra::add(_srccolor, *loop.dest, alpha, 256 - alpha);
} while (loop.next());
}
};
class FillAddClampColumnRGBACommand : public DrawerColumnCommand
{
int _color;
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uint32_t _srccolor;
uint32_t _srcalpha;
uint32_t _destalpha;
public:
FillAddClampColumnRGBACommand()
{
_color = dc_color;
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_srccolor = dc_srccolor_bgra;
_srcalpha = dc_srcalpha >> (FRACBITS - 8);
_destalpha = dc_destalpha >> (FRACBITS - 8);
}
void Execute(DrawerThread *thread) override
{
LoopIterator loop(this, thread);
if (!loop) return;
do
{
*loop.dest = BlendBgra::add(_srccolor, *loop.dest, _srcalpha, _destalpha);
} while (loop.next());
}
};
class FillSubClampColumnRGBACommand : public DrawerColumnCommand
{
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uint32_t _srccolor;
uint32_t _srcalpha;
uint32_t _destalpha;
public:
FillSubClampColumnRGBACommand()
{
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_srccolor = dc_srccolor_bgra;
_srcalpha = dc_srcalpha >> (FRACBITS - 8);
_destalpha = dc_destalpha >> (FRACBITS - 8);
}
void Execute(DrawerThread *thread) override
{
LoopIterator loop(this, thread);
if (!loop) return;
do
{
*loop.dest = BlendBgra::sub(_srccolor, *loop.dest, _srcalpha, _destalpha);
} while (loop.next());
}
};
class FillRevSubClampColumnRGBACommand : public DrawerColumnCommand
{
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uint32_t _srccolor;
uint32_t _srcalpha;
uint32_t _destalpha;
public:
FillRevSubClampColumnRGBACommand()
{
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_srccolor = dc_srccolor_bgra;
_srcalpha = dc_srcalpha >> (FRACBITS - 8);
_destalpha = dc_destalpha >> (FRACBITS - 8);
}
void Execute(DrawerThread *thread) override
{
LoopIterator loop(this, thread);
if (!loop) return;
do
{
*loop.dest = BlendBgra::revsub(_srccolor, *loop.dest, _srcalpha, _destalpha);
} while (loop.next());
}
};
class DrawAddColumnRGBACommand : public DrawerColumnCommand
{
const BYTE * RESTRICT _source;
uint32_t _light;
ShadeConstants _shade_constants;
uint32_t _srcalpha;
uint32_t _destalpha;
BYTE * RESTRICT _colormap;
public:
DrawAddColumnRGBACommand()
{
_source = dc_source;
_light = LightBgra::calc_light_multiplier(dc_light);
_shade_constants = dc_shade_constants;
_srcalpha = dc_srcalpha >> (FRACBITS - 8);
_destalpha = dc_destalpha >> (FRACBITS - 8);
_colormap = dc_colormap;
}
void Execute(DrawerThread *thread) override
{
LoopIterator loop(this, thread);
if (!loop) return;
do
{
uint32_t fg = LightBgra::shade_pal_index(_colormap[_source[loop.sample_index()]], _light, _shade_constants);
*loop.dest = BlendBgra::add(fg, *loop.dest, _srcalpha, _destalpha);
} while (loop.next());
}
};
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class DrawTranslatedColumnRGBACommand : public DrawerColumnCommand
{
fixed_t _light;
ShadeConstants _shade_constants;
BYTE * RESTRICT _translation;
const BYTE * RESTRICT _source;
public:
DrawTranslatedColumnRGBACommand()
{
_light = LightBgra::calc_light_multiplier(dc_light);
_shade_constants = dc_shade_constants;
_translation = dc_translation;
_source = dc_source;
}
void Execute(DrawerThread *thread) override
{
LoopIterator loop(this, thread);
if (!loop) return;
do
{
uint32_t fg = LightBgra::shade_pal_index(_translation[_source[loop.sample_index()]], _light, _shade_constants);
*loop.dest = BlendBgra::copy(fg);
} while (loop.next());
}
};
class DrawTlatedAddColumnRGBACommand : public DrawerColumnCommand
{
fixed_t _light;
ShadeConstants _shade_constants;
BYTE * RESTRICT _translation;
const BYTE * RESTRICT _source;
uint32_t _srcalpha;
uint32_t _destalpha;
public:
DrawTlatedAddColumnRGBACommand()
{
_light = LightBgra::calc_light_multiplier(dc_light);
_shade_constants = dc_shade_constants;
_translation = dc_translation;
_source = dc_source;
_srcalpha = dc_srcalpha >> (FRACBITS - 8);
_destalpha = dc_destalpha >> (FRACBITS - 8);
}
void Execute(DrawerThread *thread) override
{
LoopIterator loop(this, thread);
if (!loop) return;
do
{
uint32_t fg = LightBgra::shade_pal_index(_translation[_source[loop.sample_index()]], _light, _shade_constants);
*loop.dest = BlendBgra::add(fg, *loop.dest, _srcalpha, _destalpha);
} while (loop.next());
}
};
class DrawShadedColumnRGBACommand : public DrawerColumnCommand
{
private:
const BYTE * RESTRICT _source;
lighttable_t * RESTRICT _colormap;
uint32_t _color;
public:
DrawShadedColumnRGBACommand()
{
_source = dc_source;
_colormap = dc_colormap;
_color = LightBgra::shade_pal_index_simple(dc_color, LightBgra::calc_light_multiplier(dc_light));
}
void Execute(DrawerThread *thread) override
{
LoopIterator loop(this, thread);
if (!loop) return;
do
{
uint32_t alpha = clamp<uint32_t>(_colormap[_source[loop.sample_index()]], 0, 64) * 4;
uint32_t inv_alpha = 256 - alpha;
*loop.dest = BlendBgra::add(_color, *loop.dest, alpha, inv_alpha);
} while (loop.next());
}
};
class DrawAddClampColumnRGBACommand : public DrawerColumnCommand
{
const BYTE * RESTRICT _source;
uint32_t _light;
ShadeConstants _shade_constants;
uint32_t _srcalpha;
uint32_t _destalpha;
public:
DrawAddClampColumnRGBACommand()
{
_source = dc_source;
_light = LightBgra::calc_light_multiplier(dc_light);
_shade_constants = dc_shade_constants;
_srcalpha = dc_srcalpha >> (FRACBITS - 8);
_destalpha = dc_destalpha >> (FRACBITS - 8);
}
void Execute(DrawerThread *thread) override
{
LoopIterator loop(this, thread);
if (!loop) return;
do
{
uint32_t fg = LightBgra::shade_pal_index(_source[loop.sample_index()], _light, _shade_constants);
*loop.dest = BlendBgra::add(fg, *loop.dest, _srcalpha, _destalpha);
} while (loop.next());
}
};
class DrawAddClampTranslatedColumnRGBACommand : public DrawerColumnCommand
{
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BYTE * RESTRICT _translation;
const BYTE * RESTRICT _source;
uint32_t _light;
ShadeConstants _shade_constants;
uint32_t _srcalpha;
uint32_t _destalpha;
public:
DrawAddClampTranslatedColumnRGBACommand()
{
_translation = dc_translation;
_source = dc_source;
_light = LightBgra::calc_light_multiplier(dc_light);
_shade_constants = dc_shade_constants;
_srcalpha = dc_srcalpha >> (FRACBITS - 8);
_destalpha = dc_destalpha >> (FRACBITS - 8);
}
void Execute(DrawerThread *thread) override
{
LoopIterator loop(this, thread);
if (!loop) return;
do
{
uint32_t fg = LightBgra::shade_pal_index(_translation[_source[loop.sample_index()]], _light, _shade_constants);
*loop.dest = BlendBgra::add(fg, *loop.dest, _srcalpha, _destalpha);
} while (loop.next());
}
};
class DrawSubClampColumnRGBACommand : public DrawerColumnCommand
{
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const BYTE * RESTRICT _source;
uint32_t _light;
ShadeConstants _shade_constants;
uint32_t _srcalpha;
uint32_t _destalpha;
public:
DrawSubClampColumnRGBACommand()
{
_source = dc_source;
_light = LightBgra::calc_light_multiplier(dc_light);
_shade_constants = dc_shade_constants;
_srcalpha = dc_srcalpha >> (FRACBITS - 8);
_destalpha = dc_destalpha >> (FRACBITS - 8);
}
void Execute(DrawerThread *thread) override
{
LoopIterator loop(this, thread);
if (!loop) return;
do
{
uint32_t fg = LightBgra::shade_pal_index(_source[loop.sample_index()], _light, _shade_constants);
*loop.dest = BlendBgra::sub(fg, *loop.dest, _srcalpha, _destalpha);
} while (loop.next());
}
};
class DrawSubClampTranslatedColumnRGBACommand : public DrawerColumnCommand
{
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const BYTE * RESTRICT _source;
uint32_t _light;
ShadeConstants _shade_constants;
uint32_t _srcalpha;
uint32_t _destalpha;
BYTE * RESTRICT _translation;
public:
DrawSubClampTranslatedColumnRGBACommand()
{
_source = dc_source;
_light = LightBgra::calc_light_multiplier(dc_light);
_shade_constants = dc_shade_constants;
_srcalpha = dc_srcalpha >> (FRACBITS - 8);
_destalpha = dc_destalpha >> (FRACBITS - 8);
_translation = dc_translation;
}
void Execute(DrawerThread *thread) override
{
LoopIterator loop(this, thread);
if (!loop) return;
do
{
uint32_t fg = LightBgra::shade_pal_index(_translation[_source[loop.sample_index()]], _light, _shade_constants);
*loop.dest = BlendBgra::sub(fg, *loop.dest, _srcalpha, _destalpha);
} while (loop.next());
}
};
class DrawRevSubClampColumnRGBACommand : public DrawerColumnCommand
{
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const BYTE * RESTRICT _source;
uint32_t _light;
ShadeConstants _shade_constants;
uint32_t _srcalpha;
uint32_t _destalpha;
public:
DrawRevSubClampColumnRGBACommand()
{
_source = dc_source;
_light = LightBgra::calc_light_multiplier(dc_light);
_shade_constants = dc_shade_constants;
_srcalpha = dc_srcalpha >> (FRACBITS - 8);
_destalpha = dc_destalpha >> (FRACBITS - 8);
}
void Execute(DrawerThread *thread) override
{
LoopIterator loop(this, thread);
if (!loop) return;
do
{
uint32_t fg = LightBgra::shade_pal_index(_source[loop.sample_index()], _light, _shade_constants);
*loop.dest = BlendBgra::revsub(fg, *loop.dest, _srcalpha, _destalpha);
} while (loop.next());
}
};
class DrawRevSubClampTranslatedColumnRGBACommand : public DrawerColumnCommand
{
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const BYTE * RESTRICT _source;
uint32_t _light;
ShadeConstants _shade_constants;
uint32_t _srcalpha;
uint32_t _destalpha;
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BYTE * RESTRICT _translation;
public:
DrawRevSubClampTranslatedColumnRGBACommand()
{
_source = dc_source;
_light = LightBgra::calc_light_multiplier(dc_light);
_shade_constants = dc_shade_constants;
_srcalpha = dc_srcalpha >> (FRACBITS - 8);
_destalpha = dc_destalpha >> (FRACBITS - 8);
_translation = dc_translation;
}
void Execute(DrawerThread *thread) override
{
LoopIterator loop(this, thread);
if (!loop) return;
do
{
uint32_t fg = LightBgra::shade_pal_index(_translation[_source[loop.sample_index()]], _light, _shade_constants);
*loop.dest = BlendBgra::revsub(fg, *loop.dest, _srcalpha, _destalpha);
} while (loop.next());
}
};
class DrawFuzzColumnRGBACommand : public DrawerCommand
{
int _x;
int _yl;
int _yh;
BYTE * RESTRICT _destorg;
int _pitch;
int _fuzzpos;
int _fuzzviewheight;
public:
DrawFuzzColumnRGBACommand()
{
_x = dc_x;
_yl = dc_yl;
_yh = dc_yh;
_destorg = dc_destorg;
_pitch = dc_pitch;
_fuzzpos = fuzzpos;
_fuzzviewheight = fuzzviewheight;
}
void Execute(DrawerThread *thread) override
{
int yl = MAX(_yl, 1);
int yh = MIN(_yh, _fuzzviewheight);
int count = thread->count_for_thread(yl, yh - yl + 1);
// Zero length.
if (count <= 0)
return;
uint32_t *dest = thread->dest_for_thread(yl, _pitch, ylookup[yl] + _x + (uint32_t*)_destorg);
int pitch = _pitch * thread->num_cores;
int fuzzstep = thread->num_cores;
int fuzz = (_fuzzpos + thread->skipped_by_thread(yl)) % FUZZTABLE;
yl += thread->skipped_by_thread(yl);
// Handle the case where we would go out of bounds at the top:
if (yl < fuzzstep)
{
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uint32_t *srcdest = dest + fuzzoffset[fuzz] * fuzzstep + pitch;
//assert(static_cast<int>((srcdest - (uint32_t*)dc_destorg) / (_pitch)) < viewheight);
uint32_t bg = *srcdest;
uint32_t red = RPART(bg) * 3 / 4;
uint32_t green = GPART(bg) * 3 / 4;
uint32_t blue = BPART(bg) * 3 / 4;
*dest = 0xff000000 | (red << 16) | (green << 8) | blue;
dest += pitch;
fuzz += fuzzstep;
fuzz %= FUZZTABLE;
count--;
if (count == 0)
return;
}
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bool lowerbounds = (yl + (count + fuzzstep - 1) * fuzzstep > _fuzzviewheight);
if (lowerbounds)
count--;
// Fuzz where fuzzoffset stays within bounds
while (count > 0)
{
int available = (FUZZTABLE - fuzz);
int next_wrap = available / fuzzstep;
if (available % fuzzstep != 0)
next_wrap++;
int cnt = MIN(count, next_wrap);
count -= cnt;
do
{
2016-06-26 04:54:32 +00:00
uint32_t *srcdest = dest + fuzzoffset[fuzz] * fuzzstep;
//assert(static_cast<int>((srcdest - (uint32_t*)dc_destorg) / (_pitch)) < viewheight);
uint32_t bg = *srcdest;
uint32_t red = RPART(bg) * 3 / 4;
uint32_t green = GPART(bg) * 3 / 4;
uint32_t blue = BPART(bg) * 3 / 4;
*dest = 0xff000000 | (red << 16) | (green << 8) | blue;
dest += pitch;
fuzz += fuzzstep;
} while (--cnt);
fuzz %= FUZZTABLE;
}
// Handle the case where we would go out of bounds at the bottom
if (lowerbounds)
{
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uint32_t *srcdest = dest + fuzzoffset[fuzz] * fuzzstep - pitch;
//assert(static_cast<int>((srcdest - (uint32_t*)dc_destorg) / (_pitch)) < viewheight);
uint32_t bg = *srcdest;
uint32_t red = RPART(bg) * 3 / 4;
uint32_t green = GPART(bg) * 3 / 4;
uint32_t blue = BPART(bg) * 3 / 4;
*dest = 0xff000000 | (red << 16) | (green << 8) | blue;
}
}
};
/////////////////////////////////////////////////////////////////////////////
class DrawerSpanCommand : public DrawerCommand
{
public:
fixed_t _xfrac;
fixed_t _yfrac;
fixed_t _xstep;
fixed_t _ystep;
int _x1;
int _x2;
int _y;
int _xbits;
int _ybits;
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BYTE * RESTRICT _destorg;
const uint32_t * RESTRICT _source;
uint32_t _light;
ShadeConstants _shade_constants;
bool _nearest_filter;
uint32_t _srcalpha;
uint32_t _destalpha;
DrawerSpanCommand()
{
_xfrac = ds_xfrac;
_yfrac = ds_yfrac;
_xstep = ds_xstep;
_ystep = ds_ystep;
_x1 = ds_x1;
_x2 = ds_x2;
_y = ds_y;
_xbits = ds_xbits;
_ybits = ds_ybits;
_destorg = dc_destorg;
_source = (const uint32_t*)ds_source;
_light = LightBgra::calc_light_multiplier(ds_light);
_shade_constants = ds_shade_constants;
_nearest_filter = !SampleBgra::span_sampler_setup(_source, _xbits, _ybits, _xstep, _ystep, ds_source_mipmapped);
_srcalpha = dc_srcalpha >> (FRACBITS - 8);
_destalpha = dc_destalpha >> (FRACBITS - 8);
}
class LoopIterator
{
public:
uint32_t *dest;
int count;
dsfixed_t xfrac;
dsfixed_t yfrac;
dsfixed_t xstep;
dsfixed_t ystep;
BYTE yshift;
BYTE xshift;
int xmask;
bool is_64x64;
bool skipped;
LoopIterator(DrawerSpanCommand *command, DrawerThread *thread)
{
dest = ylookup[command->_y] + command->_x1 + (uint32_t*)command->_destorg;
count = command->_x2 - command->_x1 + 1;
xfrac = command->_xfrac;
yfrac = command->_yfrac;
xstep = command->_xstep;
ystep = command->_ystep;
yshift = 32 - command->_ybits;
xshift = yshift - command->_xbits;
xmask = ((1 << command->_xbits) - 1) << command->_ybits;
is_64x64 = command->_xbits == 6 && command->_ybits == 6;
skipped = thread->line_skipped_by_thread(command->_y);
}
// 64x64 is the most common case by far, so special case it.
int spot64()
{
return ((xfrac >> (32 - 6 - 6))&(63 * 64)) + (yfrac >> (32 - 6));
}
int spot()
{
return ((xfrac >> xshift) & xmask) + (yfrac >> yshift);
}
explicit operator bool()
{
return !skipped && count > 0;
}
bool next()
{
dest++;
xfrac += xstep;
yfrac += ystep;
return (--count) != 0;
}
};
};
class DrawSpanRGBACommand : public DrawerSpanCommand
{
public:
void Execute(DrawerThread *thread) override
{
LoopIterator loop(this, thread);
if (!loop) return;
if (_nearest_filter)
{
if (loop.is_64x64)
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{
do
{
*loop.dest = LightBgra::shade_bgra(_source[loop.spot64()], _light, _shade_constants);
} while (loop.next());
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}
else
{
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do
{
*loop.dest = LightBgra::shade_bgra(_source[loop.spot()], _light, _shade_constants);
} while (loop.next());
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}
}
else
{
if (loop.is_64x64)
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{
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do
{
*loop.dest = LightBgra::shade_bgra(SampleBgra::sample_bilinear(_source, loop.xfrac, loop.yfrac, 26, 26), _light, _shade_constants);
} while (loop.next());
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}
else
{
do
{
*loop.dest = LightBgra::shade_bgra(SampleBgra::sample_bilinear(_source, loop.xfrac, loop.yfrac, 32 - _xbits, 32 - _ybits), _light, _shade_constants);
} while (loop.next());
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}
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}
}
};
class DrawSpanMaskedRGBACommand : public DrawerSpanCommand
{
public:
void Execute(DrawerThread *thread) override
{
LoopIterator loop(this, thread);
if (!loop) return;
if (_nearest_filter)
{
if (loop.is_64x64)
{
do
{
uint32_t fg = LightBgra::shade_bgra(_source[loop.spot64()], _light, _shade_constants);
*loop.dest = BlendBgra::alpha_blend(fg, *loop.dest);
} while (loop.next());
}
else
{
do
{
uint32_t fg = LightBgra::shade_bgra(_source[loop.spot()], _light, _shade_constants);
*loop.dest = BlendBgra::alpha_blend(fg, *loop.dest);
} while (loop.next());
}
}
else
{
if (loop.is_64x64)
{
do
{
uint32_t fg = LightBgra::shade_bgra(SampleBgra::sample_bilinear(_source, loop.xfrac, loop.yfrac, 26, 26), _light, _shade_constants);
*loop.dest = BlendBgra::alpha_blend(fg, *loop.dest);
} while (loop.next());
}
else
{
do
{
uint32_t fg = LightBgra::shade_bgra(SampleBgra::sample_bilinear(_source, loop.xfrac, loop.yfrac, 32 - _xbits, 32 - _ybits), _light, _shade_constants);
*loop.dest = BlendBgra::alpha_blend(fg, *loop.dest);
} while (loop.next());
}
}
}
};
class DrawSpanTranslucentRGBACommand : public DrawerSpanCommand
{
public:
void Execute(DrawerThread *thread) override
{
LoopIterator loop(this, thread);
if (!loop) return;
if (loop.is_64x64)
{
do
{
uint32_t fg = LightBgra::shade_bgra(_source[loop.spot64()], _light, _shade_constants);
*loop.dest = BlendBgra::add(fg, *loop.dest, _srcalpha, _destalpha);
} while (loop.next());
}
else
{
do
{
uint32_t fg = LightBgra::shade_bgra(_source[loop.spot()], _light, _shade_constants);
*loop.dest = BlendBgra::add(fg, *loop.dest, _srcalpha, _destalpha);
} while (loop.next());
}
}
};
class DrawSpanMaskedTranslucentRGBACommand : public DrawerSpanCommand
{
public:
void Execute(DrawerThread *thread) override
{
LoopIterator loop(this, thread);
if (!loop) return;
if (loop.is_64x64)
{
do
{
uint32_t fg = LightBgra::shade_bgra(_source[loop.spot64()], _light, _shade_constants);
*loop.dest = BlendBgra::add(fg, *loop.dest, _srcalpha, calc_blend_bgalpha(fg, _destalpha));
} while (loop.next());
}
else
{
do
{
uint32_t fg = LightBgra::shade_bgra(_source[loop.spot()], _light, _shade_constants);
*loop.dest = BlendBgra::add(fg, *loop.dest, _srcalpha, calc_blend_bgalpha(fg, _destalpha));
} while (loop.next());
}
}
};
class DrawSpanAddClampRGBACommand : public DrawerSpanCommand
{
public:
void Execute(DrawerThread *thread) override
{
LoopIterator loop(this, thread);
if (!loop) return;
if (loop.is_64x64)
{
do
{
uint32_t fg = LightBgra::shade_bgra(_source[loop.spot64()], _light, _shade_constants);
*loop.dest = BlendBgra::add(fg, *loop.dest, _srcalpha, _destalpha);
} while (loop.next());
}
else
{
do
{
uint32_t fg = LightBgra::shade_bgra(_source[loop.spot()], _light, _shade_constants);
*loop.dest = BlendBgra::add(fg, *loop.dest, _srcalpha, _destalpha);
} while (loop.next());
}
}
};
class DrawSpanMaskedAddClampRGBACommand : public DrawerSpanCommand
{
public:
void Execute(DrawerThread *thread) override
{
LoopIterator loop(this, thread);
if (!loop) return;
if (loop.is_64x64)
{
do
{
uint32_t fg = LightBgra::shade_bgra(_source[loop.spot64()], _light, _shade_constants);
*loop.dest = BlendBgra::add(fg, *loop.dest, _srcalpha, calc_blend_bgalpha(fg, _destalpha));
} while (loop.next());
}
else
{
do
{
uint32_t fg = LightBgra::shade_bgra(_source[loop.spot()], _light, _shade_constants);
*loop.dest = BlendBgra::add(fg, *loop.dest, _srcalpha, calc_blend_bgalpha(fg, _destalpha));
} while (loop.next());
}
}
};
class FillSpanRGBACommand : public DrawerCommand
{
int _x1;
int _x2;
int _y;
2016-06-18 09:17:59 +00:00
BYTE * RESTRICT _destorg;
fixed_t _light;
int _color;
public:
FillSpanRGBACommand()
{
_x1 = ds_x1;
_x2 = ds_x2;
_y = ds_y;
_destorg = dc_destorg;
_light = ds_light;
_color = ds_color;
}
void Execute(DrawerThread *thread) override
{
if (thread->line_skipped_by_thread(_y))
return;
uint32_t *dest = ylookup[_y] + _x1 + (uint32_t*)_destorg;
int count = (_x2 - _x1 + 1);
uint32_t light = LightBgra::calc_light_multiplier(_light);
uint32_t color = LightBgra::shade_pal_index_simple(_color, light);
for (int i = 0; i < count; i++)
dest[i] = color;
}
};
/////////////////////////////////////////////////////////////////////////////
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class DrawSlabRGBACommand : public DrawerCommand
{
int _dx;
fixed_t _v;
int _dy;
fixed_t _vi;
const BYTE *_voxelptr;
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uint32_t *_p;
ShadeConstants _shade_constants;
const BYTE *_colormap;
fixed_t _light;
int _pitch;
int _start_y;
public:
DrawSlabRGBACommand(int dx, fixed_t v, int dy, fixed_t vi, const BYTE *vptr, BYTE *p, ShadeConstants shade_constants, const BYTE *colormap, fixed_t light)
{
_dx = dx;
_v = v;
_dy = dy;
_vi = vi;
_voxelptr = vptr;
2016-06-21 22:22:06 +00:00
_p = (uint32_t *)p;
_shade_constants = shade_constants;
_colormap = colormap;
_light = light;
_pitch = dc_pitch;
_start_y = static_cast<int>((p - dc_destorg) / (dc_pitch * 4));
assert(dx > 0);
}
void Execute(DrawerThread *thread) override
{
int dx = _dx;
fixed_t v = _v;
int dy = _dy;
fixed_t vi = _vi;
const BYTE *vptr = _voxelptr;
2016-06-21 22:22:06 +00:00
uint32_t *p = _p;
ShadeConstants shade_constants = _shade_constants;
const BYTE *colormap = _colormap;
uint32_t light = LightBgra::calc_light_multiplier(_light);
2016-06-21 22:22:06 +00:00
int pitch = _pitch;
int x;
dy = thread->count_for_thread(_start_y, dy);
p = thread->dest_for_thread(_start_y, pitch, p);
v += vi * thread->skipped_by_thread(_start_y);
vi *= thread->num_cores;
pitch *= thread->num_cores;
if (dx == 1)
{
while (dy > 0)
{
*p = LightBgra::shade_pal_index(colormap[vptr[v >> FRACBITS]], light, shade_constants);
2016-06-21 22:22:06 +00:00
p += pitch;
v += vi;
dy--;
}
}
else if (dx == 2)
{
while (dy > 0)
{
uint32_t color = LightBgra::shade_pal_index(colormap[vptr[v >> FRACBITS]], light, shade_constants);
2016-06-21 22:22:06 +00:00
p[0] = color;
p[1] = color;
p += pitch;
v += vi;
dy--;
}
}
else if (dx == 3)
{
while (dy > 0)
{
uint32_t color = LightBgra::shade_pal_index(colormap[vptr[v >> FRACBITS]], light, shade_constants);
2016-06-21 22:22:06 +00:00
p[0] = color;
p[1] = color;
p[2] = color;
p += pitch;
v += vi;
dy--;
}
}
else if (dx == 4)
{
while (dy > 0)
{
uint32_t color = LightBgra::shade_pal_index(colormap[vptr[v >> FRACBITS]], light, shade_constants);
2016-06-21 22:22:06 +00:00
p[0] = color;
p[1] = color;
p[2] = color;
p[3] = color;
p += pitch;
v += vi;
dy--;
}
}
else while (dy > 0)
{
uint32_t color = LightBgra::shade_pal_index(colormap[vptr[v >> FRACBITS]], light, shade_constants);
2016-06-21 22:22:06 +00:00
// The optimizer will probably turn this into a memset call.
// Since dx is not likely to be large, I'm not sure that's a good thing,
// hence the alternatives above.
for (x = 0; x < dx; x++)
{
p[x] = color;
}
p += pitch;
v += vi;
dy--;
}
}
};
/////////////////////////////////////////////////////////////////////////////
class DrawerWall1Command : public DrawerCommand
{
public:
2016-06-18 09:17:59 +00:00
BYTE * RESTRICT _dest;
int _pitch;
int _count;
DWORD _texturefrac;
uint32_t _texturefracx;
DWORD _iscale;
uint32_t _textureheight;
const uint32 * RESTRICT _source;
const uint32 * RESTRICT _source2;
uint32_t _light;
ShadeConstants _shade_constants;
uint32_t _srcalpha;
uint32_t _destalpha;
DrawerWall1Command()
{
_dest = dc_dest;
_pitch = dc_pitch;
_count = dc_count;
_texturefrac = dc_texturefrac;
_texturefracx = dc_texturefracx;
_iscale = dc_iscale;
_textureheight = dc_textureheight;
_source = (const uint32 *)dc_source;
_source2 = (const uint32 *)dc_source2;
_light = LightBgra::calc_light_multiplier(dc_light);
_shade_constants = dc_shade_constants;
_srcalpha = dc_srcalpha >> (FRACBITS - 8);
_destalpha = dc_destalpha >> (FRACBITS - 8);
}
class LoopIterator
{
public:
uint32_t *dest;
int pitch;
int count;
uint32_t fracstep;
uint32_t frac;
uint32_t texturefracx;
uint32_t height;
uint32_t half;
LoopIterator(DrawerWall1Command *command, DrawerThread *thread)
{
count = thread->count_for_thread(command->_dest_y, command->_count);
if (count <= 0)
return;
fracstep = command->_iscale * thread->num_cores;
frac = command->_texturefrac + command->_iscale * thread->skipped_by_thread(command->_dest_y);
texturefracx = command->_texturefracx;
dest = thread->dest_for_thread(command->_dest_y, command->_pitch, (uint32_t*)command->_dest);
pitch = command->_pitch * thread->num_cores;
height = command->_textureheight;
half = (0x80000000 + height - 1) / height;
}
explicit operator bool()
{
return count > 0;
2016-06-20 06:24:02 +00:00
}
int sample_index()
2016-06-20 06:24:02 +00:00
{
return ((frac >> FRACBITS) * height) >> FRACBITS;
2016-06-20 06:24:02 +00:00
}
bool next()
{
frac += fracstep;
dest += pitch;
return (--count) != 0;
}
};
};
class DrawerWall4Command : public DrawerCommand
{
public:
2016-06-18 09:17:59 +00:00
BYTE * RESTRICT _dest;
int _count;
int _pitch;
ShadeConstants _shade_constants;
uint32_t _vplce[4];
uint32_t _vince[4];
uint32_t _buftexturefracx[4];
uint32_t _bufheight[4];
const uint32_t * RESTRICT _bufplce[4];
const uint32_t * RESTRICT _bufplce2[4];
uint32_t _light[4];
uint32_t _srcalpha;
uint32_t _destalpha;
DrawerWall4Command()
{
_dest = dc_dest;
_count = dc_count;
_pitch = dc_pitch;
_shade_constants = dc_shade_constants;
for (int i = 0; i < 4; i++)
{
_vplce[i] = vplce[i];
_vince[i] = vince[i];
_buftexturefracx[i] = buftexturefracx[i];
_bufheight[i] = bufheight[i];
_bufplce[i] = (const uint32_t *)bufplce[i];
_bufplce2[i] = (const uint32_t *)bufplce2[i];
_light[i] = LightBgra::calc_light_multiplier(palookuplight[i]);
}
_srcalpha = dc_srcalpha >> (FRACBITS - 8);
_destalpha = dc_destalpha >> (FRACBITS - 8);
}
class LoopIterator
{
public:
uint32_t *dest;
int pitch;
int count;
uint32_t vplce[4];
uint32_t vince[4];
uint32_t height[4];
uint32_t half[4];
LoopIterator(DrawerWall4Command *command, DrawerThread *thread)
{
count = thread->count_for_thread(command->_dest_y, command->_count);
if (count <= 0)
return;
dest = thread->dest_for_thread(command->_dest_y, command->_pitch, (uint32_t*)command->_dest);
pitch = command->_pitch * thread->num_cores;
int skipped = thread->skipped_by_thread(command->_dest_y);
for (int i = 0; i < 4; i++)
{
vplce[i] = command->_vplce[i] + command->_vince[i] * skipped;
vince[i] = command->_vince[i] * thread->num_cores;
height[i] = command->_bufheight[i];
half[i] = (0x80000000 + height[i] - 1) / height[i];
}
}
explicit operator bool()
{
return count > 0;
}
int sample_index(int col)
{
return ((vplce[col] >> FRACBITS) * height[col]) >> FRACBITS;
2016-06-20 06:24:02 +00:00
}
bool next()
2016-06-20 06:24:02 +00:00
{
vplce[0] += vince[0];
vplce[1] += vince[1];
vplce[2] += vince[2];
vplce[3] += vince[3];
dest += pitch;
return (--count) != 0;
2016-06-20 06:24:02 +00:00
}
};
};
class Vlinec1RGBACommand : public DrawerWall1Command
{
public:
void Execute(DrawerThread *thread) override
{
LoopIterator loop(this, thread);
if (!loop) return;
if (_source2 == nullptr)
{
do
{
uint32_t fg = LightBgra::shade_bgra(_source[loop.sample_index()], _light, _shade_constants);
*loop.dest = BlendBgra::copy(fg);
} while (loop.next());
}
else
{
do
{
uint32_t fg = LightBgra::shade_bgra(SampleBgra::sample_bilinear(_source, _source2, loop.texturefracx, loop.frac, loop.half, loop.height), _light, _shade_constants);
*loop.dest = BlendBgra::copy(fg);
} while (loop.next());
}
}
};
class Vlinec4RGBACommand : public DrawerWall4Command
{
public:
void Execute(DrawerThread *thread) override
{
LoopIterator loop(this, thread);
if (!loop) return;
if (_bufplce2[0] == nullptr)
{
do
{
for (int i = 0; i < 4; i++)
{
uint32_t fg = LightBgra::shade_bgra(_bufplce[i][loop.sample_index(i)], _light[i], _shade_constants);
loop.dest[i] = BlendBgra::copy(fg);
}
} while (loop.next());
}
else
{
do
{
for (int i = 0; i < 4; i++)
{
uint32_t fg = LightBgra::shade_bgra(SampleBgra::sample_bilinear(_bufplce[i], _bufplce2[i], _buftexturefracx[i], loop.sample_index(i), loop.half[i], loop.height[i]), _light[i], _shade_constants);
loop.dest[i] = BlendBgra::copy(fg);
}
} while (loop.next());
}
}
};
class Mvlinec1RGBACommand : public DrawerWall1Command
{
public:
void Execute(DrawerThread *thread) override
{
LoopIterator loop(this, thread);
if (!loop) return;
if (_source2 == nullptr)
{
do
{
uint32_t fg = LightBgra::shade_bgra(_source[loop.sample_index()], _light, _shade_constants);
*loop.dest = BlendBgra::alpha_blend(fg, *loop.dest);
} while (loop.next());
}
else
{
do
{
uint32_t fg = LightBgra::shade_bgra(SampleBgra::sample_bilinear(_source, _source2, loop.texturefracx, loop.frac, loop.half, loop.height), _light, _shade_constants);
*loop.dest = BlendBgra::alpha_blend(fg, *loop.dest);
} while (loop.next());
}
}
};
class Mvlinec4RGBACommand : public DrawerWall4Command
{
public:
void Execute(DrawerThread *thread) override
{
LoopIterator loop(this, thread);
if (!loop) return;
if (_bufplce2[0] == nullptr)
{
do
{
for (int i = 0; i < 4; i++)
{
uint32_t fg = LightBgra::shade_bgra(_bufplce[i][loop.sample_index(i)], _light[i], _shade_constants);
loop.dest[i] = BlendBgra::alpha_blend(fg, loop.dest[i]);
}
} while (loop.next());
}
else
{
do
{
for (int i = 0; i < 4; i++)
{
uint32_t fg = LightBgra::shade_bgra(SampleBgra::sample_bilinear(_bufplce[i], _bufplce2[i], _buftexturefracx[i], loop.sample_index(i), loop.half[i], loop.height[i]), _light[i], _shade_constants);
loop.dest[i] = BlendBgra::alpha_blend(fg, loop.dest[i]);
}
} while (loop.next());
}
}
};
2016-06-19 21:11:41 +00:00
class Tmvline1AddRGBACommand : public DrawerWall1Command
{
public:
void Execute(DrawerThread *thread) override
{
LoopIterator loop(this, thread);
if (!loop) return;
do
{
uint32_t fg = LightBgra::shade_bgra(_source[loop.sample_index()], _light, _shade_constants);
*loop.dest = BlendBgra::add(fg, *loop.dest, _srcalpha, calc_blend_bgalpha(fg, _destalpha));
} while (loop.next());
}
};
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class Tmvline4AddRGBACommand : public DrawerWall4Command
{
public:
void Execute(DrawerThread *thread) override
{
LoopIterator loop(this, thread);
if (!loop) return;
do
{
for (int i = 0; i < 4; i++)
{
uint32_t fg = LightBgra::shade_bgra(_bufplce[i][loop.sample_index(i)], _light[i], _shade_constants);
loop.dest[i] = BlendBgra::add(fg, loop.dest[i], _srcalpha, calc_blend_bgalpha(fg, _destalpha));
}
} while (loop.next());
}
};
class Tmvline1AddClampRGBACommand : public DrawerWall1Command
{
public:
void Execute(DrawerThread *thread) override
{
LoopIterator loop(this, thread);
if (!loop) return;
do
{
uint32_t fg = LightBgra::shade_bgra(_source[loop.sample_index()], _light, _shade_constants);
*loop.dest = BlendBgra::add(fg, *loop.dest, _srcalpha, calc_blend_bgalpha(fg, _destalpha));
} while (loop.next());
}
};
class Tmvline4AddClampRGBACommand : public DrawerWall4Command
{
public:
void Execute(DrawerThread *thread) override
{
LoopIterator loop(this, thread);
if (!loop) return;
do
{
for (int i = 0; i < 4; i++)
{
uint32_t fg = LightBgra::shade_bgra(_bufplce[i][loop.sample_index(i)], _light[i], _shade_constants);
loop.dest[i] = BlendBgra::add(fg, loop.dest[i], _srcalpha, calc_blend_bgalpha(fg, _destalpha));
}
} while (loop.next());
}
};
class Tmvline1SubClampRGBACommand : public DrawerWall1Command
{
public:
void Execute(DrawerThread *thread) override
{
LoopIterator loop(this, thread);
if (!loop) return;
do
{
uint32_t fg = LightBgra::shade_bgra(_source[loop.sample_index()], _light, _shade_constants);
*loop.dest = BlendBgra::sub(fg, *loop.dest, _srcalpha, calc_blend_bgalpha(fg, _destalpha));
} while (loop.next());
}
};
class Tmvline4SubClampRGBACommand : public DrawerWall4Command
{
public:
void Execute(DrawerThread *thread) override
{
LoopIterator loop(this, thread);
if (!loop) return;
do
{
for (int i = 0; i < 4; i++)
{
uint32_t fg = LightBgra::shade_bgra(_bufplce[i][loop.sample_index(i)], _light[i], _shade_constants);
loop.dest[i] = BlendBgra::sub(fg, loop.dest[i], _srcalpha, calc_blend_bgalpha(fg, _destalpha));
}
} while (loop.next());
}
};
class Tmvline1RevSubClampRGBACommand : public DrawerWall1Command
{
public:
void Execute(DrawerThread *thread) override
{
LoopIterator loop(this, thread);
if (!loop) return;
do
{
uint32_t fg = LightBgra::shade_bgra(_source[loop.sample_index()], _light, _shade_constants);
*loop.dest = BlendBgra::revsub(fg, *loop.dest, _srcalpha, calc_blend_bgalpha(fg, _destalpha));
} while (loop.next());
}
};
class Tmvline4RevSubClampRGBACommand : public DrawerWall4Command
{
public:
void Execute(DrawerThread *thread) override
{
LoopIterator loop(this, thread);
if (!loop) return;
do
{
for (int i = 0; i < 4; i++)
{
uint32_t fg = LightBgra::shade_bgra(_bufplce[i][loop.sample_index(i)], _light[i], _shade_constants);
loop.dest[i] = BlendBgra::revsub(fg, loop.dest[i], _srcalpha, calc_blend_bgalpha(fg, _destalpha));
}
} while (loop.next());
}
};
/////////////////////////////////////////////////////////////////////////////
class DrawFogBoundaryLineRGBACommand : public DrawerCommand
{
int _y;
int _x;
int _x2;
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BYTE * RESTRICT _destorg;
fixed_t _light;
ShadeConstants _shade_constants;
public:
DrawFogBoundaryLineRGBACommand(int y, int x, int x2)
{
_y = y;
_x = x;
_x2 = x2;
_destorg = dc_destorg;
_light = dc_light;
_shade_constants = dc_shade_constants;
}
void Execute(DrawerThread *thread) override
{
if (thread->line_skipped_by_thread(_y))
return;
int y = _y;
int x = _x;
int x2 = _x2;
uint32_t *dest = ylookup[y] + (uint32_t*)_destorg;
uint32_t light = LightBgra::calc_light_multiplier(_light);
ShadeConstants constants = _shade_constants;
do
{
uint32_t red = (dest[x] >> 16) & 0xff;
uint32_t green = (dest[x] >> 8) & 0xff;
uint32_t blue = dest[x] & 0xff;
if (constants.simple_shade)
{
red = red * light / 256;
green = green * light / 256;
blue = blue * light / 256;
}
else
{
uint32_t inv_light = 256 - light;
uint32_t inv_desaturate = 256 - constants.desaturate;
uint32_t intensity = ((red * 77 + green * 143 + blue * 37) >> 8) * constants.desaturate;
red = (red * inv_desaturate + intensity) / 256;
green = (green * inv_desaturate + intensity) / 256;
blue = (blue * inv_desaturate + intensity) / 256;
red = (constants.fade_red * inv_light + red * light) / 256;
green = (constants.fade_green * inv_light + green * light) / 256;
blue = (constants.fade_blue * inv_light + blue * light) / 256;
red = (red * constants.light_red) / 256;
green = (green * constants.light_green) / 256;
blue = (blue * constants.light_blue) / 256;
}
dest[x] = 0xff000000 | (red << 16) | (green << 8) | blue;
} while (++x <= x2);
}
};
class DrawTiltedSpanRGBACommand : public DrawerCommand
{
int _y;
int _x1;
int _x2;
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BYTE * RESTRICT _destorg;
fixed_t _light;
ShadeConstants _shade_constants;
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const BYTE * RESTRICT _source;
public:
DrawTiltedSpanRGBACommand(int y, int x1, int x2)
{
_y = y;
_x1 = x1;
_x2 = x2;
_destorg = dc_destorg;
_source = ds_source;
}
void Execute(DrawerThread *thread) override
{
if (thread->line_skipped_by_thread(_y))
return;
int y = _y;
int x1 = _x1;
int x2 = _x2;
// Slopes are broken currently in master.
// Until R_DrawTiltedPlane is fixed we are just going to fill with a solid color.
uint32_t *source = (uint32_t*)_source;
uint32_t *dest = ylookup[y] + x1 + (uint32_t*)_destorg;
int count = x2 - x1 + 1;
while (count > 0)
{
*(dest++) = source[0];
count--;
}
}
};
class DrawColoredSpanRGBACommand : public DrawerCommand
{
int _y;
int _x1;
int _x2;
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BYTE * RESTRICT _destorg;
fixed_t _light;
int _color;
public:
DrawColoredSpanRGBACommand(int y, int x1, int x2)
{
_y = y;
_x1 = x1;
_x2 = x2;
_destorg = dc_destorg;
_light = ds_light;
_color = ds_color;
}
void Execute(DrawerThread *thread) override
{
if (thread->line_skipped_by_thread(_y))
return;
int y = _y;
int x1 = _x1;
int x2 = _x2;
uint32_t *dest = ylookup[y] + x1 + (uint32_t*)_destorg;
int count = (x2 - x1 + 1);
uint32_t light = LightBgra::calc_light_multiplier(_light);
uint32_t color = LightBgra::shade_pal_index_simple(_color, light);
for (int i = 0; i < count; i++)
dest[i] = color;
}
};
class FillTransColumnRGBACommand : public DrawerCommand
{
int _x;
int _y1;
int _y2;
int _color;
int _a;
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BYTE * RESTRICT _destorg;
int _pitch;
fixed_t _light;
public:
FillTransColumnRGBACommand(int x, int y1, int y2, int color, int a)
{
_x = x;
_y1 = y1;
_y2 = y2;
_color = color;
_a = a;
_destorg = dc_destorg;
_pitch = dc_pitch;
}
void Execute(DrawerThread *thread) override
{
int x = _x;
int y1 = _y1;
int y2 = _y2;
int color = _color;
int a = _a;
int ycount = thread->count_for_thread(y1, y2 - y1 + 1);
if (ycount <= 0)
return;
uint32_t fg = GPalette.BaseColors[color].d;
uint32_t fg_red = (fg >> 16) & 0xff;
uint32_t fg_green = (fg >> 8) & 0xff;
uint32_t fg_blue = fg & 0xff;
uint32_t alpha = a + 1;
uint32_t inv_alpha = 256 - alpha;
fg_red *= alpha;
fg_green *= alpha;
fg_blue *= alpha;
int spacing = _pitch * thread->num_cores;
uint32_t *dest = thread->dest_for_thread(y1, _pitch, ylookup[y1] + x + (uint32_t*)_destorg);
for (int y = 0; y < ycount; y++)
{
uint32_t bg_red = (*dest >> 16) & 0xff;
uint32_t bg_green = (*dest >> 8) & 0xff;
uint32_t bg_blue = (*dest) & 0xff;
uint32_t red = (fg_red + bg_red * inv_alpha) / 256;
uint32_t green = (fg_green + bg_green * inv_alpha) / 256;
uint32_t blue = (fg_blue + bg_blue * inv_alpha) / 256;
*dest = 0xff000000 | (red << 16) | (green << 8) | blue;
dest += spacing;
}
}
};
ApplySpecialColormapRGBACommand::ApplySpecialColormapRGBACommand(FSpecialColormap *colormap, DFrameBuffer *screen)
{
buffer = screen->GetBuffer();
pitch = screen->GetPitch();
width = screen->GetWidth();
height = screen->GetHeight();
start_red = (int)(colormap->ColorizeStart[0] * 255);
start_green = (int)(colormap->ColorizeStart[1] * 255);
start_blue = (int)(colormap->ColorizeStart[2] * 255);
end_red = (int)(colormap->ColorizeEnd[0] * 255);
end_green = (int)(colormap->ColorizeEnd[1] * 255);
end_blue = (int)(colormap->ColorizeEnd[2] * 255);
}
#ifdef NO_SSE
void ApplySpecialColormapRGBACommand::Execute(DrawerThread *thread)
{
int y = thread->skipped_by_thread(0);
int count = thread->count_for_thread(0, height);
while (count > 0)
{
BYTE *pixels = buffer + y * pitch * 4;
for (int x = 0; x < width; x++)
{
int fg_red = pixels[2];
int fg_green = pixels[1];
int fg_blue = pixels[0];
int gray = (fg_red * 77 + fg_green * 143 + fg_blue * 37) >> 8;
gray += (gray >> 7); // gray*=256/255
int inv_gray = 256 - gray;
int red = clamp((start_red * inv_gray + end_red * gray) >> 8, 0, 255);
int green = clamp((start_green * inv_gray + end_green * gray) >> 8, 0, 255);
int blue = clamp((start_blue * inv_gray + end_blue * gray) >> 8, 0, 255);
pixels[0] = (BYTE)blue;
pixels[1] = (BYTE)green;
pixels[2] = (BYTE)red;
pixels[3] = 0xff;
pixels += 4;
}
y += thread->num_cores;
count--;
}
}
#else
void ApplySpecialColormapRGBACommand::Execute(DrawerThread *thread)
{
int y = thread->skipped_by_thread(0);
int count = thread->count_for_thread(0, height);
__m128i gray_weight = _mm_set_epi16(256, 77, 143, 37, 256, 77, 143, 37);
__m128i start_end = _mm_set_epi16(255, start_red, start_green, start_blue, 255, end_red, end_green, end_blue);
while (count > 0)
{
BYTE *pixels = buffer + y * pitch * 4;
int sse_length = width / 4;
for (int x = 0; x < sse_length; x++)
{
// Unpack to integers:
__m128i p = _mm_loadu_si128((const __m128i*)pixels);
__m128i p16_0 = _mm_unpacklo_epi8(p, _mm_setzero_si128());
__m128i p16_1 = _mm_unpackhi_epi8(p, _mm_setzero_si128());
// Add gray weighting to colors
__m128i mullo0 = _mm_mullo_epi16(p16_0, gray_weight);
__m128i mullo1 = _mm_mullo_epi16(p16_1, gray_weight);
__m128i p32_0 = _mm_unpacklo_epi16(mullo0, _mm_setzero_si128());
__m128i p32_1 = _mm_unpackhi_epi16(mullo0, _mm_setzero_si128());
__m128i p32_2 = _mm_unpacklo_epi16(mullo1, _mm_setzero_si128());
__m128i p32_3 = _mm_unpackhi_epi16(mullo1, _mm_setzero_si128());
// Transpose to get color components in individual vectors:
__m128 tmpx = _mm_castsi128_ps(p32_0);
__m128 tmpy = _mm_castsi128_ps(p32_1);
__m128 tmpz = _mm_castsi128_ps(p32_2);
__m128 tmpw = _mm_castsi128_ps(p32_3);
_MM_TRANSPOSE4_PS(tmpx, tmpy, tmpz, tmpw);
__m128i blue = _mm_castps_si128(tmpx);
__m128i green = _mm_castps_si128(tmpy);
__m128i red = _mm_castps_si128(tmpz);
__m128i alpha = _mm_castps_si128(tmpw);
// Calculate gray and 256-gray values:
__m128i gray = _mm_srli_epi32(_mm_add_epi32(_mm_add_epi32(red, green), blue), 8);
__m128i inv_gray = _mm_sub_epi32(_mm_set1_epi32(256), gray);
// p32 = start * inv_gray + end * gray:
__m128i gray0 = _mm_shuffle_epi32(gray, _MM_SHUFFLE(0, 0, 0, 0));
__m128i gray1 = _mm_shuffle_epi32(gray, _MM_SHUFFLE(1, 1, 1, 1));
__m128i gray2 = _mm_shuffle_epi32(gray, _MM_SHUFFLE(2, 2, 2, 2));
__m128i gray3 = _mm_shuffle_epi32(gray, _MM_SHUFFLE(3, 3, 3, 3));
__m128i inv_gray0 = _mm_shuffle_epi32(inv_gray, _MM_SHUFFLE(0, 0, 0, 0));
__m128i inv_gray1 = _mm_shuffle_epi32(inv_gray, _MM_SHUFFLE(1, 1, 1, 1));
__m128i inv_gray2 = _mm_shuffle_epi32(inv_gray, _MM_SHUFFLE(2, 2, 2, 2));
__m128i inv_gray3 = _mm_shuffle_epi32(inv_gray, _MM_SHUFFLE(3, 3, 3, 3));
__m128i gray16_0 = _mm_packs_epi32(gray0, inv_gray0);
__m128i gray16_1 = _mm_packs_epi32(gray1, inv_gray1);
__m128i gray16_2 = _mm_packs_epi32(gray2, inv_gray2);
__m128i gray16_3 = _mm_packs_epi32(gray3, inv_gray3);
__m128i gray16_0_mullo = _mm_mullo_epi16(gray16_0, start_end);
__m128i gray16_1_mullo = _mm_mullo_epi16(gray16_1, start_end);
__m128i gray16_2_mullo = _mm_mullo_epi16(gray16_2, start_end);
__m128i gray16_3_mullo = _mm_mullo_epi16(gray16_3, start_end);
__m128i gray16_0_mulhi = _mm_mulhi_epi16(gray16_0, start_end);
__m128i gray16_1_mulhi = _mm_mulhi_epi16(gray16_1, start_end);
__m128i gray16_2_mulhi = _mm_mulhi_epi16(gray16_2, start_end);
__m128i gray16_3_mulhi = _mm_mulhi_epi16(gray16_3, start_end);
p32_0 = _mm_srli_epi32(_mm_add_epi32(_mm_unpacklo_epi16(gray16_0_mullo, gray16_0_mulhi), _mm_unpackhi_epi16(gray16_0_mullo, gray16_0_mulhi)), 8);
p32_1 = _mm_srli_epi32(_mm_add_epi32(_mm_unpacklo_epi16(gray16_1_mullo, gray16_1_mulhi), _mm_unpackhi_epi16(gray16_1_mullo, gray16_1_mulhi)), 8);
p32_2 = _mm_srli_epi32(_mm_add_epi32(_mm_unpacklo_epi16(gray16_2_mullo, gray16_2_mulhi), _mm_unpackhi_epi16(gray16_2_mullo, gray16_2_mulhi)), 8);
p32_3 = _mm_srli_epi32(_mm_add_epi32(_mm_unpacklo_epi16(gray16_3_mullo, gray16_3_mulhi), _mm_unpackhi_epi16(gray16_3_mullo, gray16_3_mulhi)), 8);
p16_0 = _mm_packs_epi32(p32_0, p32_1);
p16_1 = _mm_packs_epi32(p32_2, p32_3);
p = _mm_packus_epi16(p16_0, p16_1);
_mm_storeu_si128((__m128i*)pixels, p);
pixels += 16;
}
for (int x = sse_length * 4; x < width; x++)
{
int fg_red = pixels[2];
int fg_green = pixels[1];
int fg_blue = pixels[0];
int gray = (fg_red * 77 + fg_green * 143 + fg_blue * 37) >> 8;
gray += (gray >> 7); // gray*=256/255
int inv_gray = 256 - gray;
int red = clamp((start_red * inv_gray + end_red * gray) >> 8, 0, 255);
int green = clamp((start_green * inv_gray + end_green * gray) >> 8, 0, 255);
int blue = clamp((start_blue * inv_gray + end_blue * gray) >> 8, 0, 255);
pixels[0] = (BYTE)blue;
pixels[1] = (BYTE)green;
pixels[2] = (BYTE)red;
pixels[3] = 0xff;
pixels += 4;
}
y += thread->num_cores;
count--;
}
}
#endif
/////////////////////////////////////////////////////////////////////////////
void R_BeginDrawerCommands()
{
DrawerCommandQueue::Begin();
}
void R_EndDrawerCommands()
{
DrawerCommandQueue::End();
}
2016-06-13 21:33:52 +00:00
void R_DrawColumn_rgba()
{
DrawerCommandQueue::QueueCommand<DrawColumnRGBACommand>();
}
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void R_FillColumn_rgba()
{
DrawerCommandQueue::QueueCommand<FillColumnRGBACommand>();
}
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void R_FillAddColumn_rgba()
{
DrawerCommandQueue::QueueCommand<FillAddColumnRGBACommand>();
}
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void R_FillAddClampColumn_rgba()
{
DrawerCommandQueue::QueueCommand<FillAddClampColumnRGBACommand>();
}
2016-06-13 21:33:52 +00:00
void R_FillSubClampColumn_rgba()
{
DrawerCommandQueue::QueueCommand<FillSubClampColumnRGBACommand>();
}
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void R_FillRevSubClampColumn_rgba()
{
DrawerCommandQueue::QueueCommand<FillRevSubClampColumnRGBACommand>();
}
2016-06-13 21:33:52 +00:00
void R_DrawFuzzColumn_rgba()
{
DrawerCommandQueue::QueueCommand<DrawFuzzColumnRGBACommand>();
2016-06-17 11:40:23 +00:00
dc_yl = MAX(dc_yl, 1);
dc_yh = MIN(dc_yh, fuzzviewheight);
if (dc_yl <= dc_yh)
fuzzpos = (fuzzpos + dc_yh - dc_yl + 1) % FUZZTABLE;
}
2016-06-13 21:33:52 +00:00
void R_DrawAddColumn_rgba()
{
DrawerCommandQueue::QueueCommand<DrawAddColumnRGBACommand>();
}
2016-06-13 21:33:52 +00:00
void R_DrawTranslatedColumn_rgba()
{
DrawerCommandQueue::QueueCommand<DrawTranslatedColumnRGBACommand>();
}
2016-06-13 21:33:52 +00:00
void R_DrawTlatedAddColumn_rgba()
{
DrawerCommandQueue::QueueCommand<DrawTlatedAddColumnRGBACommand>();
}
2016-06-13 21:33:52 +00:00
void R_DrawShadedColumn_rgba()
{
DrawerCommandQueue::QueueCommand<DrawShadedColumnRGBACommand>();
}
2016-06-13 21:33:52 +00:00
void R_DrawAddClampColumn_rgba()
{
DrawerCommandQueue::QueueCommand<DrawAddClampColumnRGBACommand>();
}
2016-06-13 21:33:52 +00:00
void R_DrawAddClampTranslatedColumn_rgba()
{
DrawerCommandQueue::QueueCommand<DrawAddClampTranslatedColumnRGBACommand>();
}
2016-06-13 21:33:52 +00:00
void R_DrawSubClampColumn_rgba()
{
DrawerCommandQueue::QueueCommand<DrawSubClampColumnRGBACommand>();
}
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void R_DrawSubClampTranslatedColumn_rgba()
{
DrawerCommandQueue::QueueCommand<DrawSubClampTranslatedColumnRGBACommand>();
}
2016-06-13 21:33:52 +00:00
void R_DrawRevSubClampColumn_rgba()
{
DrawerCommandQueue::QueueCommand<DrawRevSubClampColumnRGBACommand>();
}
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void R_DrawRevSubClampTranslatedColumn_rgba()
{
DrawerCommandQueue::QueueCommand<DrawRevSubClampTranslatedColumnRGBACommand>();
}
2016-06-13 21:33:52 +00:00
void R_DrawSpan_rgba()
{
#ifdef NO_SSE
DrawerCommandQueue::QueueCommand<DrawSpanRGBACommand>();
#else
DrawerCommandQueue::QueueCommand<DrawSpanRGBA_SSE_Command>();
#endif
}
2016-06-13 21:33:52 +00:00
void R_DrawSpanMasked_rgba()
{
DrawerCommandQueue::QueueCommand<DrawSpanMaskedRGBACommand>();
}
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void R_DrawSpanTranslucent_rgba()
{
DrawerCommandQueue::QueueCommand<DrawSpanTranslucentRGBACommand>();
}
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void R_DrawSpanMaskedTranslucent_rgba()
{
DrawerCommandQueue::QueueCommand<DrawSpanMaskedTranslucentRGBACommand>();
}
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void R_DrawSpanAddClamp_rgba()
{
DrawerCommandQueue::QueueCommand<DrawSpanAddClampRGBACommand>();
}
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void R_DrawSpanMaskedAddClamp_rgba()
{
DrawerCommandQueue::QueueCommand<DrawSpanMaskedAddClampRGBACommand>();
}
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void R_FillSpan_rgba()
{
DrawerCommandQueue::QueueCommand<FillSpanRGBACommand>();
}
2016-06-21 22:22:06 +00:00
static ShadeConstants slab_rgba_shade_constants;
static const BYTE *slab_rgba_colormap;
static fixed_t slab_rgba_light;
void R_SetupDrawSlab_rgba(FColormap *base_colormap, float light, int shade)
{
slab_rgba_shade_constants.light_red = base_colormap->Color.r * 256 / 255;
slab_rgba_shade_constants.light_green = base_colormap->Color.g * 256 / 255;
slab_rgba_shade_constants.light_blue = base_colormap->Color.b * 256 / 255;
slab_rgba_shade_constants.light_alpha = base_colormap->Color.a * 256 / 255;
slab_rgba_shade_constants.fade_red = base_colormap->Fade.r;
slab_rgba_shade_constants.fade_green = base_colormap->Fade.g;
slab_rgba_shade_constants.fade_blue = base_colormap->Fade.b;
slab_rgba_shade_constants.fade_alpha = base_colormap->Fade.a;
slab_rgba_shade_constants.desaturate = MIN(abs(base_colormap->Desaturate), 255) * 255 / 256;
slab_rgba_shade_constants.simple_shade = (base_colormap->Color.d == 0x00ffffff && base_colormap->Fade.d == 0x00000000 && base_colormap->Desaturate == 0);
slab_rgba_colormap = base_colormap->Maps;
slab_rgba_light = LIGHTSCALE(light, shade);
}
void R_DrawSlab_rgba(int dx, fixed_t v, int dy, fixed_t vi, const BYTE *vptr, BYTE *p)
{
DrawerCommandQueue::QueueCommand<DrawSlabRGBACommand>(dx, v, dy, vi, vptr, p, slab_rgba_shade_constants, slab_rgba_colormap, slab_rgba_light);
}
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DWORD vlinec1_rgba()
{
DrawerCommandQueue::QueueCommand<Vlinec1RGBACommand>();
return dc_texturefrac + dc_count * dc_iscale;
}
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void vlinec4_rgba()
{
#ifdef NO_SSE
DrawerCommandQueue::QueueCommand<Vlinec4RGBACommand>();
#else
DrawerCommandQueue::QueueCommand<Vlinec4RGBA_SSE_Command>();
#endif
for (int i = 0; i < 4; i++)
vplce[i] += vince[i] * dc_count;
}
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DWORD mvlinec1_rgba()
{
DrawerCommandQueue::QueueCommand<Mvlinec1RGBACommand>();
return dc_texturefrac + dc_count * dc_iscale;
}
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void mvlinec4_rgba()
{
#ifdef NO_SSE
DrawerCommandQueue::QueueCommand<Mvlinec4RGBACommand>();
#else
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DrawerCommandQueue::QueueCommand<Mvlinec4RGBA_SSE_Command>();
#endif
for (int i = 0; i < 4; i++)
vplce[i] += vince[i] * dc_count;
}
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fixed_t tmvline1_add_rgba()
{
DrawerCommandQueue::QueueCommand<Tmvline1AddRGBACommand>();
return dc_texturefrac + dc_count * dc_iscale;
}
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void tmvline4_add_rgba()
{
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#ifdef NO_SSE
DrawerCommandQueue::QueueCommand<Tmvline4AddRGBACommand>();
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#else
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DrawerCommandQueue::QueueCommand<Tmvline4AddRGBA_SSE_Command>();
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#endif
for (int i = 0; i < 4; i++)
vplce[i] += vince[i] * dc_count;
}
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fixed_t tmvline1_addclamp_rgba()
{
DrawerCommandQueue::QueueCommand<Tmvline1AddClampRGBACommand>();
return dc_texturefrac + dc_count * dc_iscale;
}
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void tmvline4_addclamp_rgba()
{
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#ifdef NO_SSE
DrawerCommandQueue::QueueCommand<Tmvline4AddClampRGBACommand>();
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#else
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DrawerCommandQueue::QueueCommand<Tmvline4AddClampRGBA_SSE_Command>();
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#endif
for (int i = 0; i < 4; i++)
vplce[i] += vince[i] * dc_count;
}
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fixed_t tmvline1_subclamp_rgba()
{
DrawerCommandQueue::QueueCommand<Tmvline1SubClampRGBACommand>();
return dc_texturefrac + dc_count * dc_iscale;
}
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void tmvline4_subclamp_rgba()
{
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#ifdef NO_SSE
DrawerCommandQueue::QueueCommand<Tmvline4SubClampRGBACommand>();
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#else
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DrawerCommandQueue::QueueCommand<Tmvline4SubClampRGBA_SSE_Command>();
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#endif
for (int i = 0; i < 4; i++)
vplce[i] += vince[i] * dc_count;
}
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fixed_t tmvline1_revsubclamp_rgba()
{
DrawerCommandQueue::QueueCommand<Tmvline1RevSubClampRGBACommand>();
return dc_texturefrac + dc_count * dc_iscale;
}
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void tmvline4_revsubclamp_rgba()
{
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#ifdef NO_SSE
DrawerCommandQueue::QueueCommand<Tmvline4RevSubClampRGBACommand>();
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#else
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DrawerCommandQueue::QueueCommand<Tmvline4RevSubClampRGBA_SSE_Command>();
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#endif
for (int i = 0; i < 4; i++)
vplce[i] += vince[i] * dc_count;
}
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void R_DrawFogBoundarySection_rgba(int y, int y2, int x1)
{
for (; y < y2; ++y)
{
int x2 = spanend[y];
DrawerCommandQueue::QueueCommand<DrawFogBoundaryLineRGBACommand>(y, x1, x2);
}
}
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void R_DrawFogBoundary_rgba(int x1, int x2, short *uclip, short *dclip)
{
// To do: we do not need to create new spans when using rgba output - instead we should calculate light on a per pixel basis
// This is essentially the same as R_MapVisPlane but with an extra step
// to create new horizontal spans whenever the light changes enough that
// we need to use a new colormap.
double lightstep = rw_lightstep;
double light = rw_light + rw_lightstep*(x2 - x1 - 1);
int x = x2 - 1;
int t2 = uclip[x];
int b2 = dclip[x];
int rcolormap = GETPALOOKUP(light, wallshade);
int lcolormap;
BYTE *basecolormapdata = basecolormap->Maps;
if (b2 > t2)
{
clearbufshort(spanend + t2, b2 - t2, x);
}
R_SetColorMapLight(basecolormap, (float)light, wallshade);
BYTE *fake_dc_colormap = basecolormap->Maps + (GETPALOOKUP(light, wallshade) << COLORMAPSHIFT);
for (--x; x >= x1; --x)
{
int t1 = uclip[x];
int b1 = dclip[x];
const int xr = x + 1;
int stop;
light -= rw_lightstep;
lcolormap = GETPALOOKUP(light, wallshade);
if (lcolormap != rcolormap)
{
if (t2 < b2 && rcolormap != 0)
{ // Colormap 0 is always the identity map, so rendering it is
// just a waste of time.
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R_DrawFogBoundarySection_rgba(t2, b2, xr);
}
if (t1 < t2) t2 = t1;
if (b1 > b2) b2 = b1;
if (t2 < b2)
{
clearbufshort(spanend + t2, b2 - t2, x);
}
rcolormap = lcolormap;
R_SetColorMapLight(basecolormap, (float)light, wallshade);
fake_dc_colormap = basecolormap->Maps + (GETPALOOKUP(light, wallshade) << COLORMAPSHIFT);
}
else
{
if (fake_dc_colormap != basecolormapdata)
{
stop = MIN(t1, b2);
while (t2 < stop)
{
int y = t2++;
DrawerCommandQueue::QueueCommand<DrawFogBoundaryLineRGBACommand>(y, xr, spanend[y]);
}
stop = MAX(b1, t2);
while (b2 > stop)
{
int y = --b2;
DrawerCommandQueue::QueueCommand<DrawFogBoundaryLineRGBACommand>(y, xr, spanend[y]);
}
}
else
{
t2 = MAX(t2, MIN(t1, b2));
b2 = MIN(b2, MAX(b1, t2));
}
stop = MIN(t2, b1);
while (t1 < stop)
{
spanend[t1++] = x;
}
stop = MAX(b2, t2);
while (b1 > stop)
{
spanend[--b1] = x;
}
}
t2 = uclip[x];
b2 = dclip[x];
}
if (t2 < b2 && rcolormap != 0)
{
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R_DrawFogBoundarySection_rgba(t2, b2, x1);
}
}