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gzdoom/src/r_draw.h
Magnus Norddahl 27156eb60a Linux compile fixes and missing variable declarations
2016-06-10 16:32:47 +02:00

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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.
//
// DESCRIPTION:
// System specific interface stuff.
//
//-----------------------------------------------------------------------------
#ifndef __R_DRAW__
#define __R_DRAW__
#include "r_defs.h"
#include <vector>
#include <memory>
#include <thread>
#include <mutex>
#include <condition_variable>
// Spectre/Invisibility.
#define FUZZTABLE 50
extern "C" int fuzzoffset[FUZZTABLE + 1]; // [RH] +1 for the assembly routine
extern "C" int fuzzpos;
extern "C" int fuzzviewheight;
struct FColormap;
struct ShadeConstants;
extern "C" int ylookup[MAXHEIGHT];
extern "C" int dc_pitch; // [RH] Distance between rows
extern "C" lighttable_t*dc_colormap;
extern "C" FColormap *dc_fcolormap;
extern "C" ShadeConstants dc_shade_constants;
extern "C" fixed_t dc_light;
extern "C" int dc_x;
extern "C" int dc_yl;
extern "C" int dc_yh;
extern "C" fixed_t dc_iscale;
extern double dc_texturemid;
extern "C" fixed_t dc_texturefrac;
extern "C" int dc_color; // [RH] For flat colors (no texturing)
extern "C" DWORD dc_srccolor;
extern "C" DWORD *dc_srcblend;
extern "C" DWORD *dc_destblend;
extern "C" fixed_t dc_srcalpha;
extern "C" fixed_t dc_destalpha;
// first pixel in a column
extern "C" const BYTE* dc_source;
extern "C" BYTE* dc_dest, *dc_destorg;
extern "C" int dc_count;
extern "C" DWORD vplce[4];
extern "C" DWORD vince[4];
extern "C" BYTE* palookupoffse[4];
extern "C" fixed_t palookuplight[4];
extern "C" const BYTE* bufplce[4];
// [RH] Temporary buffer for column drawing
extern "C" BYTE *dc_temp;
extern "C" unsigned int dc_tspans[4][MAXHEIGHT];
extern "C" unsigned int *dc_ctspan[4];
extern "C" unsigned int horizspans[4];
// [RH] Pointers to the different column and span drawers...
// The span blitting interface.
// Hook in assembler or system specific BLT here.
extern void (*R_DrawColumn)(void);
extern DWORD (*dovline1) ();
extern DWORD (*doprevline1) ();
extern void (*dovline4) ();
extern void setupvline (int);
extern DWORD (*domvline1) ();
extern void (*domvline4) ();
extern void setupmvline (int);
extern void setuptmvline (int);
// The Spectre/Invisibility effect.
extern void (*R_DrawFuzzColumn)(void);
// [RH] Draw shaded column
extern void (*R_DrawShadedColumn)(void);
// Draw with color translation tables, for player sprite rendering,
// Green/Red/Blue/Indigo shirts.
extern void (*R_DrawTranslatedColumn)(void);
// Span drawing for rows, floor/ceiling. No Spectre effect needed.
extern void (*R_DrawSpan)(void);
void R_SetupSpanBits(FTexture *tex);
void R_SetSpanColormap(FDynamicColormap *colormap, int shade);
void R_SetSpanSource(const BYTE *pixels);
// Span drawing for masked textures.
extern void (*R_DrawSpanMasked)(void);
// Span drawing for translucent textures.
extern void (*R_DrawSpanTranslucent)(void);
// Span drawing for masked, translucent textures.
extern void (*R_DrawSpanMaskedTranslucent)(void);
// Span drawing for translucent, additive textures.
extern void (*R_DrawSpanAddClamp)(void);
// Span drawing for masked, translucent, additive textures.
extern void (*R_DrawSpanMaskedAddClamp)(void);
// [RH] Span blit into an interleaved intermediate buffer
extern void (*R_DrawColumnHoriz)(void);
void R_DrawMaskedColumnHoriz (const BYTE *column, const FTexture::Span *spans);
// [RH] Initialize the above pointers
void R_InitColumnDrawers ();
// [RH] Moves data from the temporary buffer to the screen.
extern "C"
{
void rt_copy1col_c (int hx, int sx, int yl, int yh);
void rt_copy4cols_c (int sx, int yl, int yh);
void rt_shaded1col_c (int hx, int sx, int yl, int yh);
void rt_shaded4cols_c (int sx, int yl, int yh);
void rt_shaded4cols_asm (int sx, int yl, int yh);
void rt_map1col_c (int hx, int sx, int yl, int yh);
void rt_add1col_c (int hx, int sx, int yl, int yh);
void rt_addclamp1col_c (int hx, int sx, int yl, int yh);
void rt_subclamp1col_c (int hx, int sx, int yl, int yh);
void rt_revsubclamp1col_c (int hx, int sx, int yl, int yh);
void rt_tlate1col_c (int hx, int sx, int yl, int yh);
void rt_tlateadd1col_c (int hx, int sx, int yl, int yh);
void rt_tlateaddclamp1col_c (int hx, int sx, int yl, int yh);
void rt_tlatesubclamp1col_c (int hx, int sx, int yl, int yh);
void rt_tlaterevsubclamp1col_c (int hx, int sx, int yl, int yh);
void rt_map4cols_c (int sx, int yl, int yh);
void rt_add4cols_c (int sx, int yl, int yh);
void rt_addclamp4cols_c (int sx, int yl, int yh);
void rt_subclamp4cols_c (int sx, int yl, int yh);
void rt_revsubclamp4cols_c (int sx, int yl, int yh);
void rt_tlate4cols_c (int sx, int yl, int yh);
void rt_tlateadd4cols_c (int sx, int yl, int yh);
void rt_tlateaddclamp4cols_c (int sx, int yl, int yh);
void rt_tlatesubclamp4cols_c (int sx, int yl, int yh);
void rt_tlaterevsubclamp4cols_c (int sx, int yl, int yh);
void rt_copy1col_asm (int hx, int sx, int yl, int yh);
void rt_map1col_asm (int hx, int sx, int yl, int yh);
void rt_copy4cols_asm (int sx, int yl, int yh);
void rt_map4cols_asm1 (int sx, int yl, int yh);
void rt_map4cols_asm2 (int sx, int yl, int yh);
void rt_add4cols_asm (int sx, int yl, int yh);
void rt_addclamp4cols_asm (int sx, int yl, int yh);
///
void rt_copy1col_RGBA_c (int hx, int sx, int yl, int yh);
void rt_copy4cols_RGBA_c (int sx, int yl, int yh);
void rt_shaded1col_RGBA_c (int hx, int sx, int yl, int yh);
void rt_shaded4cols_RGBA_c (int sx, int yl, int yh);
void rt_map1col_RGBA_c (int hx, int sx, int yl, int yh);
void rt_add1col_RGBA_c (int hx, int sx, int yl, int yh);
void rt_addclamp1col_RGBA_c (int hx, int sx, int yl, int yh);
void rt_subclamp1col_RGBA_c (int hx, int sx, int yl, int yh);
void rt_revsubclamp1col_RGBA_c (int hx, int sx, int yl, int yh);
void rt_tlate1col_RGBA_c (int hx, int sx, int yl, int yh);
void rt_tlateadd1col_RGBA_c (int hx, int sx, int yl, int yh);
void rt_tlateaddclamp1col_RGBA_c (int hx, int sx, int yl, int yh);
void rt_tlatesubclamp1col_RGBA_c (int hx, int sx, int yl, int yh);
void rt_tlaterevsubclamp1col_RGBA_c (int hx, int sx, int yl, int yh);
void rt_map4cols_RGBA_c (int sx, int yl, int yh);
void rt_add4cols_RGBA_c (int sx, int yl, int yh);
void rt_addclamp4cols_RGBA_c (int sx, int yl, int yh);
void rt_subclamp4cols_RGBA_c (int sx, int yl, int yh);
void rt_revsubclamp4cols_RGBA_c (int sx, int yl, int yh);
void rt_tlate4cols_RGBA_c (int sx, int yl, int yh);
void rt_tlateadd4cols_RGBA_c (int sx, int yl, int yh);
void rt_tlateaddclamp4cols_RGBA_c (int sx, int yl, int yh);
void rt_tlatesubclamp4cols_RGBA_c (int sx, int yl, int yh);
void rt_tlaterevsubclamp4cols_RGBA_c (int sx, int yl, int yh);
}
extern void (*rt_copy1col)(int hx, int sx, int yl, int yh);
extern void (*rt_copy4cols)(int sx, int yl, int yh);
extern void (*rt_shaded1col)(int hx, int sx, int yl, int yh);
extern void (*rt_shaded4cols)(int sx, int yl, int yh);
extern void (*rt_map1col)(int hx, int sx, int yl, int yh);
extern void (*rt_add1col)(int hx, int sx, int yl, int yh);
extern void (*rt_addclamp1col)(int hx, int sx, int yl, int yh);
extern void (*rt_subclamp1col)(int hx, int sx, int yl, int yh);
extern void (*rt_revsubclamp1col)(int hx, int sx, int yl, int yh);
extern void (*rt_tlate1col)(int hx, int sx, int yl, int yh);
extern void (*rt_tlateadd1col)(int hx, int sx, int yl, int yh);
extern void (*rt_tlateaddclamp1col)(int hx, int sx, int yl, int yh);
extern void (*rt_tlatesubclamp1col)(int hx, int sx, int yl, int yh);
extern void (*rt_tlaterevsubclamp1col)(int hx, int sx, int yl, int yh);
extern void (*rt_map4cols)(int sx, int yl, int yh);
extern void (*rt_add4cols)(int sx, int yl, int yh);
extern void (*rt_addclamp4cols)(int sx, int yl, int yh);
extern void (*rt_subclamp4cols)(int sx, int yl, int yh);
extern void (*rt_revsubclamp4cols)(int sx, int yl, int yh);
extern void (*rt_tlate4cols)(int sx, int yl, int yh);
extern void (*rt_tlateadd4cols)(int sx, int yl, int yh);
extern void (*rt_tlateaddclamp4cols)(int sx, int yl, int yh);
extern void (*rt_tlatesubclamp4cols)(int sx, int yl, int yh);
extern void (*rt_tlaterevsubclamp4cols)(int sx, int yl, int yh);
extern void (*rt_initcols)(BYTE *buffer);
extern void (*rt_span_coverage)(int x, int start, int stop);
void rt_draw4cols (int sx);
// [RH] Preps the temporary horizontal buffer.
void rt_initcols_pal (BYTE *buffer);
void rt_initcols_rgba (BYTE *buffer);
void rt_span_coverage_pal(int x, int start, int stop);
void rt_span_coverage_rgba(int x, int start, int stop);
extern void (*R_DrawFogBoundary)(int x1, int x2, short *uclip, short *dclip);
void R_DrawFogBoundary_C (int x1, int x2, short *uclip, short *dclip);
#ifdef X86_ASM
extern "C" void R_DrawColumnP_Unrolled (void);
extern "C" void R_DrawColumnHorizP_ASM (void);
extern "C" void R_DrawColumnP_ASM (void);
extern "C" void R_DrawFuzzColumnP_ASM (void);
void R_DrawTranslatedColumnP_C (void);
void R_DrawShadedColumnP_C (void);
extern "C" void R_DrawSpanP_ASM (void);
extern "C" void R_DrawSpanMaskedP_ASM (void);
#else
void R_DrawColumnHorizP_C (void);
void R_DrawColumnP_C (void);
void R_DrawFuzzColumnP_C (void);
void R_DrawTranslatedColumnP_C (void);
void R_DrawShadedColumnP_C (void);
void R_DrawSpanP_C (void);
void R_DrawSpanMaskedP_C (void);
#endif
void R_DrawColumnHorizP_RGBA_C (void);
void R_DrawColumnP_RGBA_C (void);
void R_DrawFuzzColumnP_RGBA_C (void);
void R_DrawTranslatedColumnP_RGBA_C (void);
void R_DrawShadedColumnP_RGBA_C (void);
void R_DrawSpanP_RGBA_C (void);
void R_DrawSpanMaskedP_RGBA_C (void);
void R_DrawSpanTranslucentP_RGBA_C();
void R_DrawSpanMaskedTranslucentP_RGBA_C();
void R_DrawSpanAddClampP_RGBA_C();
void R_DrawSpanMaskedAddClampP_RGBA_C();
void R_FillColumnP_RGBA();
void R_FillAddColumn_RGBA_C();
void R_FillAddClampColumn_RGBA();
void R_FillSubClampColumn_RGBA();
void R_FillRevSubClampColumn_RGBA();
void R_DrawAddColumnP_RGBA_C();
void R_DrawTlatedAddColumnP_RGBA_C();
void R_DrawAddClampColumnP_RGBA_C();
void R_DrawAddClampTranslatedColumnP_RGBA_C();
void R_DrawSubClampColumnP_RGBA_C();
void R_DrawSubClampTranslatedColumnP_RGBA_C();
void R_DrawRevSubClampColumnP_RGBA_C();
void R_DrawRevSubClampTranslatedColumnP_RGBA_C();
void R_FillSpan_RGBA();
void R_DrawFogBoundary_RGBA(int x1, int x2, short *uclip, short *dclip);
fixed_t tmvline1_add_RGBA();
void tmvline4_add_RGBA();
fixed_t tmvline1_addclamp_RGBA();
void tmvline4_addclamp_RGBA();
fixed_t tmvline1_subclamp_RGBA();
void tmvline4_subclamp_RGBA();
fixed_t tmvline1_revsubclamp_RGBA();
void tmvline4_revsubclamp_RGBA();
DWORD vlinec1_RGBA();
void vlinec4_RGBA();
DWORD mvlinec1_RGBA();
void mvlinec4_RGBA();
void R_DrawSpanTranslucentP_C (void);
void R_DrawSpanMaskedTranslucentP_C (void);
void R_DrawTlatedLucentColumnP_C (void);
#define R_DrawTlatedLucentColumn R_DrawTlatedLucentColumnP_C
extern void(*R_FillColumn)(void);
extern void(*R_FillAddColumn)(void);
extern void(*R_FillAddClampColumn)(void);
extern void(*R_FillSubClampColumn)(void);
extern void(*R_FillRevSubClampColumn)(void);
extern void(*R_DrawAddColumn)(void);
extern void(*R_DrawTlatedAddColumn)(void);
extern void(*R_DrawAddClampColumn)(void);
extern void(*R_DrawAddClampTranslatedColumn)(void);
extern void(*R_DrawSubClampColumn)(void);
extern void(*R_DrawSubClampTranslatedColumn)(void);
extern void(*R_DrawRevSubClampColumn)(void);
extern void(*R_DrawRevSubClampTranslatedColumn)(void);
extern void(*R_FillSpan)(void);
extern void(*R_FillColumnHoriz)(void);
void R_FillColumnP_C (void);
void R_FillColumnHorizP_C (void);
void R_FillSpan_C (void);
void R_FillColumnHorizP_RGBA_C(void);
void R_FillSpan_RGBA_C(void);
#ifdef X86_ASM
#define R_SetupDrawSlab R_SetupDrawSlabA
#define R_DrawSlab R_DrawSlabA
#else
#define R_SetupDrawSlab R_SetupDrawSlabC
#define R_DrawSlab R_DrawSlabC
#endif
extern "C" void R_SetupDrawSlab(const BYTE *colormap);
extern "C" void R_DrawSlab(int dx, fixed_t v, int dy, fixed_t vi, const BYTE *vptr, BYTE *p);
extern "C" int ds_y;
extern "C" int ds_x1;
extern "C" int ds_x2;
extern "C" FColormap* ds_fcolormap;
extern "C" lighttable_t* ds_colormap;
extern "C" ShadeConstants ds_shade_constants;
extern "C" dsfixed_t ds_light;
extern "C" dsfixed_t ds_xfrac;
extern "C" dsfixed_t ds_yfrac;
extern "C" dsfixed_t ds_xstep;
extern "C" dsfixed_t ds_ystep;
extern "C" int ds_xbits;
extern "C" int ds_ybits;
extern "C" fixed_t ds_alpha;
// start of a 64*64 tile image
extern "C" const BYTE* ds_source;
extern "C" int ds_color; // [RH] For flat color (no texturing)
extern BYTE shadetables[/*NUMCOLORMAPS*16*256*/];
extern FDynamicColormap ShadeFakeColormap[16];
extern BYTE identitymap[256];
extern FDynamicColormap identitycolormap;
extern BYTE *dc_translation;
// [RH] Added for muliresolution support
void R_InitShadeMaps();
void R_InitFuzzTable (int fuzzoff);
// [RH] Consolidate column drawer selection
enum ESPSResult
{
DontDraw, // not useful to draw this
DoDraw0, // draw this as if r_columnmethod is 0
DoDraw1, // draw this as if r_columnmethod is 1
};
ESPSResult R_SetPatchStyle (FRenderStyle style, fixed_t alpha, int translation, DWORD color);
inline ESPSResult R_SetPatchStyle(FRenderStyle style, float alpha, int translation, DWORD color)
{
return R_SetPatchStyle(style, FLOAT2FIXED(alpha), translation, color);
}
// Call this after finished drawing the current thing, in case its
// style was STYLE_Shade
void R_FinishSetPatchStyle ();
extern fixed_t(*tmvline1_add)();
extern void(*tmvline4_add)();
extern fixed_t(*tmvline1_addclamp)();
extern void(*tmvline4_addclamp)();
extern fixed_t(*tmvline1_subclamp)();
extern void(*tmvline4_subclamp)();
extern fixed_t(*tmvline1_revsubclamp)();
extern void(*tmvline4_revsubclamp)();
// transmaskwallscan calls this to find out what column drawers to use
bool R_GetTransMaskDrawers (fixed_t (**tmvline1)(), void (**tmvline4)());
// Retrieve column data for wallscan. Should probably be removed
// to just use the texture's GetColumn() method. It just exists
// for double-layer skies.
const BYTE *R_GetColumn (FTexture *tex, int col);
void wallscan (int x1, int x2, short *uwal, short *dwal, float *swal, fixed_t *lwal, double yrepeat, const BYTE *(*getcol)(FTexture *tex, int col)=R_GetColumn);
// maskwallscan is exactly like wallscan but does not draw anything where the texture is color 0.
void maskwallscan (int x1, int x2, short *uwal, short *dwal, float *swal, fixed_t *lwal, double yrepeat, const BYTE *(*getcol)(FTexture *tex, int col)=R_GetColumn);
// transmaskwallscan is like maskwallscan, but it can also blend to the background
void transmaskwallscan (int x1, int x2, short *uwal, short *dwal, float *swal, fixed_t *lwal, double yrepeat, const BYTE *(*getcol)(FTexture *tex, int col)=R_GetColumn);
// Sets dc_colormap and dc_light to their appropriate values depending on the output format (pal vs true color)
void R_SetColorMapLight(FColormap *base_colormap, float light, int shade);
// Same as R_SetColorMapLight, but for ds_colormap and ds_light
void R_SetDSColorMapLight(FColormap *base_colormap, float light, int shade);
void R_SetTranslationMap(lighttable_t *translation);
// Wait until all drawers finished executing
void R_FinishDrawerCommands();
class DrawerCommandQueue;
class DrawerThread
{
public:
std::thread thread;
// Thread line index of this thread
int core = 0;
// Number of active threads
int num_cores = 1;
// Range of rows processed this pass
int pass_start_y = 0;
int pass_end_y = MAXHEIGHT;
uint32_t dc_temp_rgbabuff_rgba[MAXHEIGHT * 4];
uint32_t *dc_temp_rgba;
// Checks if a line is rendered by this thread
bool line_skipped_by_thread(int line)
{
return line < pass_start_y || line >= pass_end_y || line % num_cores != core;
}
// The number of lines to skip to reach the first line to be rendered by this thread
int skipped_by_thread(int first_line)
{
int pass_skip = MAX(pass_start_y - first_line, 0);
int core_skip = (num_cores - (first_line + pass_skip - core) % num_cores) % num_cores;
return pass_skip + core_skip;
}
// The number of lines to be rendered by this thread
int count_for_thread(int first_line, int count)
{
int lines_until_pass_end = MAX(pass_end_y - first_line, 0);
count = MIN(count, lines_until_pass_end);
int c = (count - skipped_by_thread(first_line) + num_cores - 1) / num_cores;
return MAX(c, 0);
}
// Calculate the dest address for the first line to be rendered by this thread
uint32_t *dest_for_thread(int first_line, int pitch, uint32_t *dest)
{
return dest + skipped_by_thread(first_line) * pitch;
}
};
class DrawerCommand
{
protected:
int dc_dest_y;
public:
DrawerCommand()
{
dc_dest_y = static_cast<int>((dc_dest - dc_destorg) / (dc_pitch * 4));
}
virtual void Execute(DrawerThread *thread) = 0;
};
class DrawerCommandQueue
{
enum { memorypool_size = 4 * 1024 * 1024 };
char memorypool[memorypool_size];
size_t memorypool_pos = 0;
std::vector<DrawerCommand *> commands;
std::vector<DrawerThread> threads;
std::mutex start_mutex;
std::condition_variable start_condition;
std::vector<DrawerCommand *> active_commands;
bool shutdown_flag = false;
int run_id = 0;
std::mutex end_mutex;
std::condition_variable end_condition;
size_t finished_threads = 0;
bool no_threading = false;
DrawerThread single_core_thread;
int num_passes = 2;
int rows_in_pass = 540;
void StartThreads();
void StopThreads();
static DrawerCommandQueue *Instance();
~DrawerCommandQueue();
public:
// Allocate memory valid for the duration of a command execution
static void* AllocMemory(size_t size);
// Queue command to be executed by drawer worker threads
template<typename T, typename... Types>
static void QueueCommand(Types &&... args)
{
auto queue = Instance();
if (queue->no_threading)
{
T command(std::forward<Types>(args)...);
command.Execute(&queue->single_core_thread);
}
else
{
void *ptr = AllocMemory(sizeof(T));
if (!ptr)
return;
T *command = new (ptr)T(std::forward<Types>(args)...);
queue->commands.push_back(command);
}
}
// Wait until all worker threads finished executing commands
static void Finish();
};
#endif
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