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Split poly_triangle into multiple files

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This commit is contained in:
Magnus Norddahl 2016-12-30 02:20:24 +01:00
parent 308e768903
commit d3056d2679
11 changed files with 1590 additions and 1320 deletions
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4
src/CMakeLists.txt
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@ -836,6 +836,10 @@ set( FASTMATH_PCH_SOURCES
polyrenderer/scene/poly_sprite.cpp
polyrenderer/scene/poly_sky.cpp
polyrenderer/drawers/poly_triangle.cpp
polyrenderer/drawers/poly_buffer.cpp
polyrenderer/drawers/poly_draw_args.cpp
polyrenderer/drawers/screen_triangle.cpp
polyrenderer/math/tri_matrix.cpp
polyrenderer/math/poly_intersection.cpp
r_sky.cpp
s_advsound.cpp

100
src/polyrenderer/drawers/poly_buffer.cpp Normal file
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@ -0,0 +1,100 @@
/*
** Triangle drawers
** Copyright (c) 2016 Magnus Norddahl
**
** This software is provided 'as-is', without any express or implied
** warranty. In no event will the authors be held liable for any damages
** arising from the use of this software.
**
** Permission is granted to anyone to use this software for any purpose,
** including commercial applications, and to alter it and redistribute it
** freely, subject to the following restrictions:
**
** 1. The origin of this software must not be misrepresented; you must not
** claim that you wrote the original software. If you use this software
** in a product, an acknowledgment in the product documentation would be
** appreciated but is not required.
** 2. Altered source versions must be plainly marked as such, and must not be
** misrepresented as being the original software.
** 3. This notice may not be removed or altered from any source distribution.
**
*/
#include <stddef.h>
#include "templates.h"
#include "doomdef.h"
#include "i_system.h"
#include "w_wad.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 "poly_buffer.h"
#include "swrenderer/drawers/r_drawers.h"
/////////////////////////////////////////////////////////////////////////////
PolySubsectorGBuffer *PolySubsectorGBuffer::Instance()
{
static PolySubsectorGBuffer buffer;
return &buffer;
}
void PolySubsectorGBuffer::Resize(int newwidth, int newheight)
{
width = newwidth;
height = newheight;
values.resize(width * height);
}
/////////////////////////////////////////////////////////////////////////////
PolyStencilBuffer *PolyStencilBuffer::Instance()
{
static PolyStencilBuffer buffer;
return &buffer;
}
void PolyStencilBuffer::Clear(int newwidth, int newheight, uint8_t stencil_value)
{
width = newwidth;
height = newheight;
int count = BlockWidth() * BlockHeight();
values.resize(count * 64);
masks.resize(count);
uint8_t *v = Values();
uint32_t *m = Masks();
for (int i = 0; i < count; i++)
{
m[i] = 0xffffff00 | stencil_value;
}
}
/////////////////////////////////////////////////////////////////////////////
namespace
{
int NextBufferVertex = 0;
}
TriVertex *PolyVertexBuffer::GetVertices(int count)
{
enum { VertexBufferSize = 256 * 1024 };
static TriVertex Vertex[VertexBufferSize];
if (NextBufferVertex + count > VertexBufferSize)
return nullptr;
TriVertex *v = Vertex + NextBufferVertex;
NextBufferVertex += count;
return v;
}
void PolyVertexBuffer::Clear()
{
NextBufferVertex = 0;
}

68
src/polyrenderer/drawers/poly_buffer.h Normal file
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@ -0,0 +1,68 @@
/*
** Frame buffers
** Copyright (c) 2016 Magnus Norddahl
**
** This software is provided 'as-is', without any express or implied
** warranty. In no event will the authors be held liable for any damages
** arising from the use of this software.
**
** Permission is granted to anyone to use this software for any purpose,
** including commercial applications, and to alter it and redistribute it
** freely, subject to the following restrictions:
**
** 1. The origin of this software must not be misrepresented; you must not
** claim that you wrote the original software. If you use this software
** in a product, an acknowledgment in the product documentation would be
** appreciated but is not required.
** 2. Altered source versions must be plainly marked as such, and must not be
** misrepresented as being the original software.
** 3. This notice may not be removed or altered from any source distribution.
**
*/
#pragma once
struct TriVertex;
class PolySubsectorGBuffer
{
public:
static PolySubsectorGBuffer *Instance();
void Resize(int newwidth, int newheight);
int Width() const { return width; }
int Height() const { return height; }
uint32_t *Values() { return values.data(); }
private:
int width;
int height;
std::vector<uint32_t> values;
};
class PolyStencilBuffer
{
public:
static PolyStencilBuffer *Instance();
void Clear(int newwidth, int newheight, uint8_t stencil_value = 0);
int Width() const { return width; }
int Height() const { return height; }
int BlockWidth() const { return (width + 7) / 8; }
int BlockHeight() const { return (height + 7) / 8; }
uint8_t *Values() { return values.data(); }
uint32_t *Masks() { return masks.data(); }
private:
int width;
int height;
// 8x8 blocks of stencil values, plus a mask for each block indicating if values are the same for early out stencil testing
std::vector<uint8_t> values;
std::vector<uint32_t> masks;
};
class PolyVertexBuffer
{
public:
static TriVertex *GetVertices(int count);
static void Clear();
};

106
src/polyrenderer/drawers/poly_draw_args.cpp Normal file
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@ -0,0 +1,106 @@
/*
** Triangle drawers
** Copyright (c) 2016 Magnus Norddahl
**
** This software is provided 'as-is', without any express or implied
** warranty. In no event will the authors be held liable for any damages
** arising from the use of this software.
**
** Permission is granted to anyone to use this software for any purpose,
** including commercial applications, and to alter it and redistribute it
** freely, subject to the following restrictions:
**
** 1. The origin of this software must not be misrepresented; you must not
** claim that you wrote the original software. If you use this software
** in a product, an acknowledgment in the product documentation would be
** appreciated but is not required.
** 2. Altered source versions must be plainly marked as such, and must not be
** misrepresented as being the original software.
** 3. This notice may not be removed or altered from any source distribution.
**
*/
#include <stddef.h>
#include "templates.h"
#include "doomdef.h"
#include "i_system.h"
#include "w_wad.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 "poly_draw_args.h"
#include "swrenderer/r_main.h"
void PolyDrawArgs::SetClipPlane(float a, float b, float c, float d)
{
clipPlane[0] = a;
clipPlane[1] = b;
clipPlane[2] = c;
clipPlane[3] = d;
}
void PolyDrawArgs::SetTexture(FTexture *texture)
{
textureWidth = texture->GetWidth();
textureHeight = texture->GetHeight();
if (swrenderer::r_swtruecolor)
texturePixels = (const uint8_t *)texture->GetPixelsBgra();
else
texturePixels = texture->GetPixels();
translation = nullptr;
}
void PolyDrawArgs::SetTexture(FTexture *texture, uint32_t translationID, bool forcePal)
{
if (translationID != 0xffffffff && translationID != 0)
{
FRemapTable *table = TranslationToTable(translationID);
if (table != nullptr && !table->Inactive)
{
if (swrenderer::r_swtruecolor)
translation = (uint8_t*)table->Palette;
else
translation = table->Remap;
textureWidth = texture->GetWidth();
textureHeight = texture->GetHeight();
texturePixels = texture->GetPixels();
return;
}
}
if (forcePal)
{
textureWidth = texture->GetWidth();
textureHeight = texture->GetHeight();
texturePixels = texture->GetPixels();
}
else
{
SetTexture(texture);
}
}
void PolyDrawArgs::SetColormap(FSWColormap *base_colormap)
{
uniforms.light_red = base_colormap->Color.r * 256 / 255;
uniforms.light_green = base_colormap->Color.g * 256 / 255;
uniforms.light_blue = base_colormap->Color.b * 256 / 255;
uniforms.light_alpha = base_colormap->Color.a * 256 / 255;
uniforms.fade_red = base_colormap->Fade.r;
uniforms.fade_green = base_colormap->Fade.g;
uniforms.fade_blue = base_colormap->Fade.b;
uniforms.fade_alpha = base_colormap->Fade.a;
uniforms.desaturate = MIN(abs(base_colormap->Desaturate), 255) * 255 / 256;
bool simple_shade = (base_colormap->Color.d == 0x00ffffff && base_colormap->Fade.d == 0x00000000 && base_colormap->Desaturate == 0);
if (simple_shade)
uniforms.flags |= TriUniforms::simple_shade;
else
uniforms.flags &= ~TriUniforms::simple_shade;
colormaps = base_colormap->Maps;
}

69
src/polyrenderer/drawers/poly_draw_args.h Normal file
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@ -0,0 +1,69 @@
/*
** Triangle drawers
** Copyright (c) 2016 Magnus Norddahl
**
** This software is provided 'as-is', without any express or implied
** warranty. In no event will the authors be held liable for any damages
** arising from the use of this software.
**
** Permission is granted to anyone to use this software for any purpose,
** including commercial applications, and to alter it and redistribute it
** freely, subject to the following restrictions:
**
** 1. The origin of this software must not be misrepresented; you must not
** claim that you wrote the original software. If you use this software
** in a product, an acknowledgment in the product documentation would be
** appreciated but is not required.
** 2. Altered source versions must be plainly marked as such, and must not be
** misrepresented as being the original software.
** 3. This notice may not be removed or altered from any source distribution.
**
*/
#pragma once
#include "r_data/r_translate.h"
#include "r_data/colormaps.h"
#include "swrenderer/drawers/r_drawers.h"
class FTexture;
enum class TriangleDrawMode
{
Normal,
Fan,
Strip
};
struct TriDrawTriangleArgs;
struct TriMatrix;
class PolyDrawArgs
{
public:
TriUniforms uniforms;
const TriMatrix *objectToClip = nullptr;
const TriVertex *vinput = nullptr;
int vcount = 0;
TriangleDrawMode mode = TriangleDrawMode::Normal;
bool ccw = false;
// bool stencilTest = true; // Always true for now
bool subsectorTest = false;
bool writeStencil = true;
bool writeColor = true;
bool writeSubsector = true;
const uint8_t *texturePixels = nullptr;
int textureWidth = 0;
int textureHeight = 0;
const uint8_t *translation = nullptr;
uint8_t stenciltestvalue = 0;
uint8_t stencilwritevalue = 0;
const uint8_t *colormaps = nullptr;
float clipPlane[4];
TriBlendMode blendmode = TriBlendMode::Copy;
void SetClipPlane(float a, float b, float c, float d);
void SetTexture(FTexture *texture);
void SetTexture(FTexture *texture, uint32_t translationID, bool forcePal = false);
void SetColormap(FSWColormap *base_colormap);
};

1104
src/polyrenderer/drawers/poly_triangle.cpp
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File diff suppressed because it is too large Load diff

220
src/polyrenderer/drawers/poly_triangle.h
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@ -25,140 +25,15 @@
#include "swrenderer/drawers/r_draw.h"
#include "swrenderer/drawers/r_thread.h"
#include "swrenderer/drawers/r_drawers.h"
#include "r_data/r_translate.h"
#include "r_data/colormaps.h"
class FTexture;
enum class TriangleDrawMode
{
Normal,
Fan,
Strip
};
struct TriDrawTriangleArgs;
struct TriMatrix;
class PolyDrawArgs
{
public:
TriUniforms uniforms;
const TriMatrix *objectToClip = nullptr;
const TriVertex *vinput = nullptr;
int vcount = 0;
TriangleDrawMode mode = TriangleDrawMode::Normal;
bool ccw = false;
// bool stencilTest = true; // Always true for now
bool subsectorTest = false;
bool writeStencil = true;
bool writeColor = true;
bool writeSubsector = true;
const uint8_t *texturePixels = nullptr;
int textureWidth = 0;
int textureHeight = 0;
const uint8_t *translation = nullptr;
uint8_t stenciltestvalue = 0;
uint8_t stencilwritevalue = 0;
const uint8_t *colormaps = nullptr;
float clipPlane[4];
TriBlendMode blendmode = TriBlendMode::Copy;
void SetClipPlane(float a, float b, float c, float d)
{
clipPlane[0] = a;
clipPlane[1] = b;
clipPlane[2] = c;
clipPlane[3] = d;
}
void SetTexture(FTexture *texture)
{
textureWidth = texture->GetWidth();
textureHeight = texture->GetHeight();
if (swrenderer::r_swtruecolor)
texturePixels = (const uint8_t *)texture->GetPixelsBgra();
else
texturePixels = texture->GetPixels();
translation = nullptr;
}
void SetTexture(FTexture *texture, uint32_t translationID, bool forcePal = false)
{
if (translationID != 0xffffffff && translationID != 0)
{
FRemapTable *table = TranslationToTable(translationID);
if (table != nullptr && !table->Inactive)
{
if (swrenderer::r_swtruecolor)
translation = (uint8_t*)table->Palette;
else
translation = table->Remap;
textureWidth = texture->GetWidth();
textureHeight = texture->GetHeight();
texturePixels = texture->GetPixels();
return;
}
}
if (forcePal)
{
textureWidth = texture->GetWidth();
textureHeight = texture->GetHeight();
texturePixels = texture->GetPixels();
}
else
{
SetTexture(texture);
}
}
void SetColormap(FSWColormap *base_colormap)
{
uniforms.light_red = base_colormap->Color.r * 256 / 255;
uniforms.light_green = base_colormap->Color.g * 256 / 255;
uniforms.light_blue = base_colormap->Color.b * 256 / 255;
uniforms.light_alpha = base_colormap->Color.a * 256 / 255;
uniforms.fade_red = base_colormap->Fade.r;
uniforms.fade_green = base_colormap->Fade.g;
uniforms.fade_blue = base_colormap->Fade.b;
uniforms.fade_alpha = base_colormap->Fade.a;
uniforms.desaturate = MIN(abs(base_colormap->Desaturate), 255) * 255 / 256;
bool simple_shade = (base_colormap->Color.d == 0x00ffffff && base_colormap->Fade.d == 0x00000000 && base_colormap->Desaturate == 0);
if (simple_shade)
uniforms.flags |= TriUniforms::simple_shade;
else
uniforms.flags &= ~TriUniforms::simple_shade;
colormaps = base_colormap->Maps;
}
};
#include "polyrenderer/math/tri_matrix.h"
#include "polyrenderer/drawers/poly_buffer.h"
#include "polyrenderer/drawers/poly_draw_args.h"
struct ShadedTriVertex : public TriVertex
{
float clipDistance0;
};
struct TriMatrix
{
static TriMatrix null();
static TriMatrix identity();
static TriMatrix translate(float x, float y, float z);
static TriMatrix scale(float x, float y, float z);
static TriMatrix rotate(float angle, float x, float y, float z);
static TriMatrix swapYZ();
static TriMatrix perspective(float fovy, float aspect, float near, float far);
static TriMatrix frustum(float left, float right, float bottom, float top, float near, float far);
static TriMatrix worldToView(); // Software renderer world to view space transform
static TriMatrix viewToClip(); // Software renderer shearing projection
ShadedTriVertex operator*(TriVertex v) const;
TriMatrix operator*(const TriMatrix &m) const;
float matrix[16];
};
typedef void(*PolyDrawFuncPtr)(const TriDrawTriangleArgs *, WorkerThreadData *);
class PolyTriangleDrawer
@ -185,73 +60,6 @@ private:
friend class DrawPolyTrianglesCommand;
};
class PolySubsectorGBuffer
{
public:
static PolySubsectorGBuffer *Instance()
{
static PolySubsectorGBuffer buffer;
return &buffer;
}
void Resize(int newwidth, int newheight)
{
width = newwidth;
height = newheight;
values.resize(width * height);
}
int Width() const { return width; }
int Height() const { return height; }
uint32_t *Values() { return values.data(); }
private:
int width;
int height;
std::vector<uint32_t> values;
};
class PolyStencilBuffer
{
public:
static PolyStencilBuffer *Instance()
{
static PolyStencilBuffer buffer;
return &buffer;
}
void Clear(int newwidth, int newheight, uint8_t stencil_value = 0)
{
width = newwidth;
height = newheight;
int count = BlockWidth() * BlockHeight();
values.resize(count * 64);
masks.resize(count);
uint8_t *v = Values();
uint32_t *m = Masks();
for (int i = 0; i < count; i++)
{
m[i] = 0xffffff00 | stencil_value;
}
}
int Width() const { return width; }
int Height() const { return height; }
int BlockWidth() const { return (width + 7) / 8; }
int BlockHeight() const { return (height + 7) / 8; }
uint8_t *Values() { return values.data(); }
uint32_t *Masks() { return masks.data(); }
private:
int width;
int height;
// 8x8 blocks of stencil values, plus a mask for each block indicating if values are the same for early out stencil testing
std::vector<uint8_t> values;
std::vector<uint32_t> masks;
};
class DrawPolyTrianglesCommand : public DrawerCommand
{
public:
@ -263,25 +71,3 @@ public:
private:
PolyDrawArgs args;
};
class PolyVertexBuffer
{
public:
static TriVertex *GetVertices(int count);
static void Clear();
};
struct ScreenTriangleStepVariables
{
float W;
float Varying[TriVertex::NumVarying];
};
class ScreenTriangle
{
public:
static void SetupNormal(const TriDrawTriangleArgs *args, WorkerThreadData *thread);
static void SetupSubsector(const TriDrawTriangleArgs *args, WorkerThreadData *thread);
static void StencilWrite(const TriDrawTriangleArgs *args, WorkerThreadData *thread);
static void SubsectorWrite(const TriDrawTriangleArgs *args, WorkerThreadData *thread);
};

966
src/polyrenderer/drawers/screen_triangle.cpp Normal file
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@ -0,0 +1,966 @@
/*
** Triangle drawers
** Copyright (c) 2016 Magnus Norddahl
**
** This software is provided 'as-is', without any express or implied
** warranty. In no event will the authors be held liable for any damages
** arising from the use of this software.
**
** Permission is granted to anyone to use this software for any purpose,
** including commercial applications, and to alter it and redistribute it
** freely, subject to the following restrictions:
**
** 1. The origin of this software must not be misrepresented; you must not
** claim that you wrote the original software. If you use this software
** in a product, an acknowledgment in the product documentation would be
** appreciated but is not required.
** 2. Altered source versions must be plainly marked as such, and must not be
** misrepresented as being the original software.
** 3. This notice may not be removed or altered from any source distribution.
**
*/
#include <stddef.h>
#include "templates.h"
#include "doomdef.h"
#include "i_system.h"
#include "w_wad.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 "poly_triangle.h"
#include "swrenderer/drawers/r_draw_rgba.h"
#include "swrenderer/r_main.h"
#include "screen_triangle.h"
void ScreenTriangle::SetupNormal(const TriDrawTriangleArgs *args, WorkerThreadData *thread)
{
const TriVertex &v1 = *args->v1;
const TriVertex &v2 = *args->v2;
const TriVertex &v3 = *args->v3;
int clipright = args->clipright;
int clipbottom = args->clipbottom;
int stencilPitch = args->stencilPitch;
uint8_t * RESTRICT stencilValues = args->stencilValues;
uint32_t * RESTRICT stencilMasks = args->stencilMasks;
uint8_t stencilTestValue = args->stencilTestValue;
TriFullSpan * RESTRICT span = thread->FullSpans;
TriPartialBlock * RESTRICT partial = thread->PartialBlocks;
// 28.4 fixed-point coordinates
const int Y1 = (int)round(16.0f * v1.y);
const int Y2 = (int)round(16.0f * v2.y);
const int Y3 = (int)round(16.0f * v3.y);
const int X1 = (int)round(16.0f * v1.x);
const int X2 = (int)round(16.0f * v2.x);
const int X3 = (int)round(16.0f * v3.x);
// Deltas
const int DX12 = X1 - X2;
const int DX23 = X2 - X3;
const int DX31 = X3 - X1;
const int DY12 = Y1 - Y2;
const int DY23 = Y2 - Y3;
const int DY31 = Y3 - Y1;
// Fixed-point deltas
const int FDX12 = DX12 << 4;
const int FDX23 = DX23 << 4;
const int FDX31 = DX31 << 4;
const int FDY12 = DY12 << 4;
const int FDY23 = DY23 << 4;
const int FDY31 = DY31 << 4;
// Bounding rectangle
int minx = MAX((MIN(MIN(X1, X2), X3) + 0xF) >> 4, 0);
int maxx = MIN((MAX(MAX(X1, X2), X3) + 0xF) >> 4, clipright - 1);
int miny = MAX((MIN(MIN(Y1, Y2), Y3) + 0xF) >> 4, 0);
int maxy = MIN((MAX(MAX(Y1, Y2), Y3) + 0xF) >> 4, clipbottom - 1);
if (minx >= maxx || miny >= maxy)
{
thread->NumFullSpans = 0;
thread->NumPartialBlocks = 0;
return;
}
// Block size, standard 8x8 (must be power of two)
const int q = 8;
// Start in corner of 8x8 block
minx &= ~(q - 1);
miny &= ~(q - 1);
// Half-edge constants
int C1 = DY12 * X1 - DX12 * Y1;
int C2 = DY23 * X2 - DX23 * Y2;
int C3 = DY31 * X3 - DX31 * Y3;
// Correct for fill convention
if (DY12 < 0 || (DY12 == 0 && DX12 > 0)) C1++;
if (DY23 < 0 || (DY23 == 0 && DX23 > 0)) C2++;
if (DY31 < 0 || (DY31 == 0 && DX31 > 0)) C3++;
// First block line for this thread
int core = thread->core;
int num_cores = thread->num_cores;
int core_skip = (num_cores - ((miny / q) - core) % num_cores) % num_cores;
miny += core_skip * q;
thread->StartX = minx;
thread->StartY = miny;
span->Length = 0;
// Loop through blocks
for (int y = miny; y < maxy; y += q * num_cores)
{
for (int x = minx; x < maxx; x += q)
{
// Corners of block
int x0 = x << 4;
int x1 = (x + q - 1) << 4;
int y0 = y << 4;
int y1 = (y + q - 1) << 4;
// Evaluate half-space functions
bool a00 = C1 + DX12 * y0 - DY12 * x0 > 0;
bool a10 = C1 + DX12 * y0 - DY12 * x1 > 0;
bool a01 = C1 + DX12 * y1 - DY12 * x0 > 0;
bool a11 = C1 + DX12 * y1 - DY12 * x1 > 0;
int a = (a00 << 0) | (a10 << 1) | (a01 << 2) | (a11 << 3);
bool b00 = C2 + DX23 * y0 - DY23 * x0 > 0;
bool b10 = C2 + DX23 * y0 - DY23 * x1 > 0;
bool b01 = C2 + DX23 * y1 - DY23 * x0 > 0;
bool b11 = C2 + DX23 * y1 - DY23 * x1 > 0;
int b = (b00 << 0) | (b10 << 1) | (b01 << 2) | (b11 << 3);
bool c00 = C3 + DX31 * y0 - DY31 * x0 > 0;
bool c10 = C3 + DX31 * y0 - DY31 * x1 > 0;
bool c01 = C3 + DX31 * y1 - DY31 * x0 > 0;
bool c11 = C3 + DX31 * y1 - DY31 * x1 > 0;
int c = (c00 << 0) | (c10 << 1) | (c01 << 2) | (c11 << 3);
// Stencil test the whole block, if possible
int block = x / 8 + y / 8 * stencilPitch;
uint8_t *stencilBlock = &stencilValues[block * 64];
uint32_t *stencilBlockMask = &stencilMasks[block];
bool blockIsSingleStencil = ((*stencilBlockMask) & 0xffffff00) == 0xffffff00;
bool skipBlock = blockIsSingleStencil && ((*stencilBlockMask) & 0xff) != stencilTestValue;
// Skip block when outside an edge
if (a == 0 || b == 0 || c == 0 || skipBlock)
{
if (span->Length != 0)
{
span++;
span->Length = 0;
}
continue;
}
// Accept whole block when totally covered
if (a == 0xf && b == 0xf && c == 0xf && x + q <= clipright && y + q <= clipbottom && blockIsSingleStencil)
{
if (span->Length != 0)
{
span->Length++;
}
else
{
span->X = x;
span->Y = y;
span->Length = 1;
}
}
else // Partially covered block
{
x0 = x << 4;
x1 = (x + q - 1) << 4;
int CY1 = C1 + DX12 * y0 - DY12 * x0;
int CY2 = C2 + DX23 * y0 - DY23 * x0;
int CY3 = C3 + DX31 * y0 - DY31 * x0;
uint32_t mask0 = 0;
uint32_t mask1 = 0;
for (int iy = 0; iy < 4; iy++)
{
int CX1 = CY1;
int CX2 = CY2;
int CX3 = CY3;
for (int ix = 0; ix < q; ix++)
{
bool passStencilTest = blockIsSingleStencil || stencilBlock[ix + iy * q] == stencilTestValue;
bool covered = (CX1 > 0 && CX2 > 0 && CX3 > 0 && (x + ix) < clipright && (y + iy) < clipbottom && passStencilTest);
mask0 <<= 1;
mask0 |= (uint32_t)covered;
CX1 -= FDY12;
CX2 -= FDY23;
CX3 -= FDY31;
}
CY1 += FDX12;
CY2 += FDX23;
CY3 += FDX31;
}
for (int iy = 4; iy < q; iy++)
{
int CX1 = CY1;
int CX2 = CY2;
int CX3 = CY3;
for (int ix = 0; ix < q; ix++)
{
bool passStencilTest = blockIsSingleStencil || stencilBlock[ix + iy * q] == stencilTestValue;
bool covered = (CX1 > 0 && CX2 > 0 && CX3 > 0 && (x + ix) < clipright && (y + iy) < clipbottom && passStencilTest);
mask1 <<= 1;
mask1 |= (uint32_t)covered;
CX1 -= FDY12;
CX2 -= FDY23;
CX3 -= FDY31;
}
CY1 += FDX12;
CY2 += FDX23;
CY3 += FDX31;
}
if (mask0 != 0xffffffff || mask1 != 0xffffffff)
{
if (span->Length > 0)
{
span++;
span->Length = 0;
}
if (mask0 == 0 && mask1 == 0)
continue;
partial->X = x;
partial->Y = y;
partial->Mask0 = mask0;
partial->Mask1 = mask1;
partial++;
}
else if (span->Length != 0)
{
span->Length++;
}
else
{
span->X = x;
span->Y = y;
span->Length = 1;
}
}
}
if (span->Length != 0)
{
span++;
span->Length = 0;
}
}
thread->NumFullSpans = (int)(span - thread->FullSpans);
thread->NumPartialBlocks = (int)(partial - thread->PartialBlocks);
}
void ScreenTriangle::SetupSubsector(const TriDrawTriangleArgs *args, WorkerThreadData *thread)
{
const TriVertex &v1 = *args->v1;
const TriVertex &v2 = *args->v2;
const TriVertex &v3 = *args->v3;
int clipright = args->clipright;
int clipbottom = args->clipbottom;
int stencilPitch = args->stencilPitch;
uint8_t * RESTRICT stencilValues = args->stencilValues;
uint32_t * RESTRICT stencilMasks = args->stencilMasks;
uint8_t stencilTestValue = args->stencilTestValue;
uint32_t * RESTRICT subsectorGBuffer = args->subsectorGBuffer;
uint32_t subsectorDepth = args->uniforms->subsectorDepth;
int32_t pitch = args->pitch;
TriFullSpan * RESTRICT span = thread->FullSpans;
TriPartialBlock * RESTRICT partial = thread->PartialBlocks;
// 28.4 fixed-point coordinates
const int Y1 = (int)round(16.0f * v1.y);
const int Y2 = (int)round(16.0f * v2.y);
const int Y3 = (int)round(16.0f * v3.y);
const int X1 = (int)round(16.0f * v1.x);
const int X2 = (int)round(16.0f * v2.x);
const int X3 = (int)round(16.0f * v3.x);
// Deltas
const int DX12 = X1 - X2;
const int DX23 = X2 - X3;
const int DX31 = X3 - X1;
const int DY12 = Y1 - Y2;
const int DY23 = Y2 - Y3;
const int DY31 = Y3 - Y1;
// Fixed-point deltas
const int FDX12 = DX12 << 4;
const int FDX23 = DX23 << 4;
const int FDX31 = DX31 << 4;
const int FDY12 = DY12 << 4;
const int FDY23 = DY23 << 4;
const int FDY31 = DY31 << 4;
// Bounding rectangle
int minx = MAX((MIN(MIN(X1, X2), X3) + 0xF) >> 4, 0);
int maxx = MIN((MAX(MAX(X1, X2), X3) + 0xF) >> 4, clipright - 1);
int miny = MAX((MIN(MIN(Y1, Y2), Y3) + 0xF) >> 4, 0);
int maxy = MIN((MAX(MAX(Y1, Y2), Y3) + 0xF) >> 4, clipbottom - 1);
if (minx >= maxx || miny >= maxy)
{
thread->NumFullSpans = 0;
thread->NumPartialBlocks = 0;
return;
}
// Block size, standard 8x8 (must be power of two)
const int q = 8;
// Start in corner of 8x8 block
minx &= ~(q - 1);
miny &= ~(q - 1);
// Half-edge constants
int C1 = DY12 * X1 - DX12 * Y1;
int C2 = DY23 * X2 - DX23 * Y2;
int C3 = DY31 * X3 - DX31 * Y3;
// Correct for fill convention
if (DY12 < 0 || (DY12 == 0 && DX12 > 0)) C1++;
if (DY23 < 0 || (DY23 == 0 && DX23 > 0)) C2++;
if (DY31 < 0 || (DY31 == 0 && DX31 > 0)) C3++;
// First block line for this thread
int core = thread->core;
int num_cores = thread->num_cores;
int core_skip = (num_cores - ((miny / q) - core) % num_cores) % num_cores;
miny += core_skip * q;
thread->StartX = minx;
thread->StartY = miny;
span->Length = 0;
// Loop through blocks
for (int y = miny; y < maxy; y += q * num_cores)
{
for (int x = minx; x < maxx; x += q)
{
// Corners of block
int x0 = x << 4;
int x1 = (x + q - 1) << 4;
int y0 = y << 4;
int y1 = (y + q - 1) << 4;
// Evaluate half-space functions
bool a00 = C1 + DX12 * y0 - DY12 * x0 > 0;
bool a10 = C1 + DX12 * y0 - DY12 * x1 > 0;
bool a01 = C1 + DX12 * y1 - DY12 * x0 > 0;
bool a11 = C1 + DX12 * y1 - DY12 * x1 > 0;
int a = (a00 << 0) | (a10 << 1) | (a01 << 2) | (a11 << 3);
bool b00 = C2 + DX23 * y0 - DY23 * x0 > 0;
bool b10 = C2 + DX23 * y0 - DY23 * x1 > 0;
bool b01 = C2 + DX23 * y1 - DY23 * x0 > 0;
bool b11 = C2 + DX23 * y1 - DY23 * x1 > 0;
int b = (b00 << 0) | (b10 << 1) | (b01 << 2) | (b11 << 3);
bool c00 = C3 + DX31 * y0 - DY31 * x0 > 0;
bool c10 = C3 + DX31 * y0 - DY31 * x1 > 0;
bool c01 = C3 + DX31 * y1 - DY31 * x0 > 0;
bool c11 = C3 + DX31 * y1 - DY31 * x1 > 0;
int c = (c00 << 0) | (c10 << 1) | (c01 << 2) | (c11 << 3);
// Stencil test the whole block, if possible
int block = x / 8 + y / 8 * stencilPitch;
uint8_t *stencilBlock = &stencilValues[block * 64];
uint32_t *stencilBlockMask = &stencilMasks[block];
bool blockIsSingleStencil = ((*stencilBlockMask) & 0xffffff00) == 0xffffff00;
bool skipBlock = blockIsSingleStencil && ((*stencilBlockMask) & 0xff) < stencilTestValue;
// Skip block when outside an edge
if (a == 0 || b == 0 || c == 0 || skipBlock)
{
if (span->Length != 0)
{
span++;
span->Length = 0;
}
continue;
}
// Accept whole block when totally covered
if (a == 0xf && b == 0xf && c == 0xf && x + q <= clipright && y + q <= clipbottom && blockIsSingleStencil)
{
// Totally covered block still needs a subsector coverage test:
uint32_t *subsector = subsectorGBuffer + x + y * pitch;
uint32_t mask0 = 0;
uint32_t mask1 = 0;
for (int iy = 0; iy < 4; iy++)
{
for (int ix = 0; ix < q; ix++)
{
bool covered = subsector[ix] >= subsectorDepth;
mask0 <<= 1;
mask0 |= (uint32_t)covered;
}
subsector += pitch;
}
for (int iy = 4; iy < q; iy++)
{
for (int ix = 0; ix < q; ix++)
{
bool covered = subsector[ix] >= subsectorDepth;
mask1 <<= 1;
mask1 |= (uint32_t)covered;
}
subsector += pitch;
}
if (mask0 != 0xffffffff || mask1 != 0xffffffff)
{
if (span->Length > 0)
{
span++;
span->Length = 0;
}
if (mask0 == 0 && mask1 == 0)
continue;
partial->X = x;
partial->Y = y;
partial->Mask0 = mask0;
partial->Mask1 = mask1;
partial++;
}
else if (span->Length != 0)
{
span->Length++;
}
else
{
span->X = x;
span->Y = y;
span->Length = 1;
}
}
else // Partially covered block
{
x0 = x << 4;
x1 = (x + q - 1) << 4;
int CY1 = C1 + DX12 * y0 - DY12 * x0;
int CY2 = C2 + DX23 * y0 - DY23 * x0;
int CY3 = C3 + DX31 * y0 - DY31 * x0;
uint32_t *subsector = subsectorGBuffer + x + y * pitch;
uint32_t mask0 = 0;
uint32_t mask1 = 0;
for (int iy = 0; iy < 4; iy++)
{
int CX1 = CY1;
int CX2 = CY2;
int CX3 = CY3;
for (int ix = 0; ix < q; ix++)
{
bool passStencilTest = blockIsSingleStencil || stencilBlock[ix + iy * q] >= stencilTestValue;
bool covered = (CX1 > 0 && CX2 > 0 && CX3 > 0 && (x + ix) < clipright && (y + iy) < clipbottom && passStencilTest && subsector[ix] >= subsectorDepth);
mask0 <<= 1;
mask0 |= (uint32_t)covered;
CX1 -= FDY12;
CX2 -= FDY23;
CX3 -= FDY31;
}
CY1 += FDX12;
CY2 += FDX23;
CY3 += FDX31;
subsector += pitch;
}
for (int iy = 4; iy < q; iy++)
{
int CX1 = CY1;
int CX2 = CY2;
int CX3 = CY3;
for (int ix = 0; ix < q; ix++)
{
bool passStencilTest = blockIsSingleStencil || stencilBlock[ix + iy * q] >= stencilTestValue;
bool covered = (CX1 > 0 && CX2 > 0 && CX3 > 0 && (x + ix) < clipright && (y + iy) < clipbottom && passStencilTest && subsector[ix] >= subsectorDepth);
mask1 <<= 1;
mask1 |= (uint32_t)covered;
CX1 -= FDY12;
CX2 -= FDY23;
CX3 -= FDY31;
}
CY1 += FDX12;
CY2 += FDX23;
CY3 += FDX31;
subsector += pitch;
}
if (mask0 != 0xffffffff || mask1 != 0xffffffff)
{
if (span->Length > 0)
{
span++;
span->Length = 0;
}
if (mask0 == 0 && mask1 == 0)
continue;
partial->X = x;
partial->Y = y;
partial->Mask0 = mask0;
partial->Mask1 = mask1;
partial++;
}
else if (span->Length != 0)
{
span->Length++;
}
else
{
span->X = x;
span->Y = y;
span->Length = 1;
}
}
}
if (span->Length != 0)
{
span++;
span->Length = 0;
}
}
thread->NumFullSpans = (int)(span - thread->FullSpans);
thread->NumPartialBlocks = (int)(partial - thread->PartialBlocks);
}
void ScreenTriangle::StencilWrite(const TriDrawTriangleArgs *args, WorkerThreadData *thread)
{
uint8_t * RESTRICT stencilValues = args->stencilValues;
uint32_t * RESTRICT stencilMasks = args->stencilMasks;
uint32_t stencilWriteValue = args->stencilWriteValue;
uint32_t stencilPitch = args->stencilPitch;
int numSpans = thread->NumFullSpans;
auto fullSpans = thread->FullSpans;
int numBlocks = thread->NumPartialBlocks;
auto partialBlocks = thread->PartialBlocks;
for (int i = 0; i < numSpans; i++)
{
const auto &span = fullSpans[i];
int block = span.X / 8 + span.Y / 8 * stencilPitch;
uint8_t *stencilBlock = &stencilValues[block * 64];
uint32_t *stencilBlockMask = &stencilMasks[block];
int width = span.Length;
for (int x = 0; x < width; x++)
stencilBlockMask[x] = 0xffffff00 | stencilWriteValue;
}
for (int i = 0; i < numBlocks; i++)
{
const auto &block = partialBlocks[i];
uint32_t mask0 = block.Mask0;
uint32_t mask1 = block.Mask1;
int sblock = block.X / 8 + block.Y / 8 * stencilPitch;
uint8_t *stencilBlock = &stencilValues[sblock * 64];
uint32_t *stencilBlockMask = &stencilMasks[sblock];
bool isSingleValue = ((*stencilBlockMask) & 0xffffff00) == 0xffffff00;
if (isSingleValue)
{
uint8_t value = (*stencilBlockMask) & 0xff;
for (int v = 0; v < 64; v++)
stencilBlock[v] = value;
*stencilBlockMask = 0;
}
int count = 0;
for (int v = 0; v < 32; v++)
{
if ((mask0 & (1 << 31)) || stencilBlock[v] == stencilWriteValue)
{
stencilBlock[v] = stencilWriteValue;
count++;
}
mask0 <<= 1;
}
for (int v = 32; v < 64; v++)
{
if ((mask1 & (1 << 31)) || stencilBlock[v] == stencilWriteValue)
{
stencilBlock[v] = stencilWriteValue;
count++;
}
mask1 <<= 1;
}
if (count == 64)
*stencilBlockMask = 0xffffff00 | stencilWriteValue;
}
}
void ScreenTriangle::SubsectorWrite(const TriDrawTriangleArgs *args, WorkerThreadData *thread)
{
uint32_t * RESTRICT subsectorGBuffer = args->subsectorGBuffer;
uint32_t subsectorDepth = args->uniforms->subsectorDepth;
int pitch = args->pitch;
int numSpans = thread->NumFullSpans;
auto fullSpans = thread->FullSpans;
int numBlocks = thread->NumPartialBlocks;
auto partialBlocks = thread->PartialBlocks;
for (int i = 0; i < numSpans; i++)
{
const auto &span = fullSpans[i];
uint32_t *subsector = subsectorGBuffer + span.X + span.Y * pitch;
int width = span.Length * 8;
int height = 8;
for (int y = 0; y < height; y++)
{
for (int x = 0; x < width; x++)
subsector[x] = subsectorDepth;
subsector += pitch;
}
}
for (int i = 0; i < numBlocks; i++)
{
const auto &block = partialBlocks[i];
uint32_t *subsector = subsectorGBuffer + block.X + block.Y * pitch;
uint32_t mask0 = block.Mask0;
uint32_t mask1 = block.Mask1;
for (int y = 0; y < 4; y++)
{
for (int x = 0; x < 8; x++)
{
if (mask0 & (1 << 31))
subsector[x] = subsectorDepth;
mask0 <<= 1;
}
subsector += pitch;
}
for (int y = 4; y < 8; y++)
{
for (int x = 0; x < 8; x++)
{
if (mask1 & (1 << 31))
subsector[x] = subsectorDepth;
mask1 <<= 1;
}
subsector += pitch;
}
}
}
#if 0
float ScreenTriangle::FindGradientX(float x0, float y0, float x1, float y1, float x2, float y2, float c0, float c1, float c2)
{
float top = (c1 - c2) * (y0 - y2) - (c0 - c2) * (y1 - y2);
float bottom = (x1 - x2) * (y0 - y2) - (x0 - x2) * (y1 - y2);
return top / bottom;
}
float ScreenTriangle::FindGradientY(float x0, float y0, float x1, float y1, float x2, float y2, float c0, float c1, float c2)
{
float top = (c1 - c2) * (x0 - x2) - (c0 - c2) * (x1 - x2);
float bottom = (x0 - x2) * (y1 - y2) - (x1 - x2) * (y0 - y2);
return top / bottom;
}
void ScreenTriangle::Draw(const TriDrawTriangleArgs *args, WorkerThreadData *thread)
{
int numSpans = thread->NumFullSpans;
auto fullSpans = thread->FullSpans;
int numBlocks = thread->NumPartialBlocks;
auto partialBlocks = thread->PartialBlocks;
int startX = thread->StartX;
int startY = thread->StartY;
// Calculate gradients
const TriVertex &v1 = *args->v1;
const TriVertex &v2 = *args->v2;
const TriVertex &v3 = *args->v3;
ScreenTriangleStepVariables gradientX;
ScreenTriangleStepVariables gradientY;
ScreenTriangleStepVariables start;
gradientX.W = FindGradientX(v1.x, v1.y, v2.x, v2.y, v3.x, v3.y, v1.w, v2.w, v3.w);
gradientY.W = FindGradientY(v1.x, v1.y, v2.x, v2.y, v3.x, v3.y, v1.w, v2.w, v3.w);
start.W = v1.w + gradientX.W * (startX - v1.x) + gradientY.W * (startY - v1.y);
for (int i = 0; i < TriVertex::NumVarying; i++)
{
gradientX.Varying[i] = FindGradientX(v1.x, v1.y, v2.x, v2.y, v3.x, v3.y, v1.varying[i] * v1.w, v2.varying[i] * v2.w, v3.varying[i] * v3.w);
gradientY.Varying[i] = FindGradientY(v1.x, v1.y, v2.x, v2.y, v3.x, v3.y, v1.varying[i] * v1.w, v2.varying[i] * v2.w, v3.varying[i] * v3.w);
start.Varying[i] = v1.varying[i] * v1.w + gradientX.Varying[i] * (startX - v1.x) + gradientY.Varying[i] * (startY - v1.y);
}
const uint32_t * RESTRICT texPixels = (const uint32_t *)args->texturePixels;
uint32_t texWidth = args->textureWidth;
uint32_t texHeight = args->textureHeight;
uint32_t * RESTRICT destOrg = (uint32_t*)args->dest;
uint32_t * RESTRICT subsectorGBuffer = (uint32_t*)args->subsectorGBuffer;
int pitch = args->pitch;
uint32_t subsectorDepth = args->uniforms->subsectorDepth;
uint32_t light = args->uniforms->light;
float shade = (64.0f - (light * 255 / 256 + 12.0f) * 32.0f / 128.0f) / 32.0f;
float globVis = 1706.0f;
for (int i = 0; i < numSpans; i++)
{
const auto &span = fullSpans[i];
uint32_t *dest = destOrg + span.X + span.Y * pitch;
uint32_t *subsector = subsectorGBuffer + span.X + span.Y * pitch;
int width = span.Length;
int height = 8;
ScreenTriangleStepVariables blockPosY;
blockPosY.W = start.W + gradientX.W * (span.X - startX) + gradientY.W * (span.Y - startY);
for (int j = 0; j < TriVertex::NumVarying; j++)
blockPosY.Varying[j] = start.Varying[j] + gradientX.Varying[j] * (span.X - startX) + gradientY.Varying[j] * (span.Y - startY);
for (int y = 0; y < height; y++)
{
ScreenTriangleStepVariables blockPosX = blockPosY;
float rcpW = 0x01000000 / blockPosX.W;
int32_t varyingPos[TriVertex::NumVarying];
for (int j = 0; j < TriVertex::NumVarying; j++)
varyingPos[j] = (int32_t)(blockPosX.Varying[j] * rcpW);
int lightpos = 256 - (int)(clamp(shade - MIN(24.0f, globVis * blockPosX.W) / 32.0f, 0.0f, 31.0f / 32.0f) * 256.0f);
for (int x = 0; x < width; x++)
{
blockPosX.W += gradientX.W * 8;
for (int j = 0; j < TriVertex::NumVarying; j++)
blockPosX.Varying[j] += gradientX.Varying[j] * 8;
rcpW = 0x01000000 / blockPosX.W;
int32_t varyingStep[TriVertex::NumVarying];
for (int j = 0; j < TriVertex::NumVarying; j++)
{
int32_t nextPos = (int32_t)(blockPosX.Varying[j] * rcpW);
varyingStep[j] = (nextPos - varyingPos[j]) / 8;
}
int lightnext = 256 - (int)(clamp(shade - MIN(24.0f, globVis * blockPosX.W) / 32.0f, 0.0f, 31.0f / 32.0f) * 256.0f);
int lightstep = (lightnext - lightpos) / 8;
for (int ix = 0; ix < 8; ix++)
{
int texelX = ((((uint32_t)varyingPos[0] << 8) >> 16) * texWidth) >> 16;
int texelY = ((((uint32_t)varyingPos[1] << 8) >> 16) * texHeight) >> 16;
uint32_t fg = texPixels[texelX * texHeight + texelY];
uint32_t r = RPART(fg);
uint32_t g = GPART(fg);
uint32_t b = BPART(fg);
r = r * lightpos / 256;
g = g * lightpos / 256;
b = b * lightpos / 256;
fg = 0xff000000 | (r << 16) | (g << 8) | b;
dest[x * 8 + ix] = fg;
subsector[x * 8 + ix] = subsectorDepth;
for (int j = 0; j < TriVertex::NumVarying; j++)
varyingPos[j] += varyingStep[j];
lightpos += lightstep;
}
}
blockPosY.W += gradientY.W;
for (int j = 0; j < TriVertex::NumVarying; j++)
blockPosY.Varying[j] += gradientY.Varying[j];
dest += pitch;
subsector += pitch;
}
}
for (int i = 0; i < numBlocks; i++)
{
const auto &block = partialBlocks[i];
ScreenTriangleStepVariables blockPosY;
blockPosY.W = start.W + gradientX.W * (block.X - startX) + gradientY.W * (block.Y - startY);
for (int j = 0; j < TriVertex::NumVarying; j++)
blockPosY.Varying[j] = start.Varying[j] + gradientX.Varying[j] * (block.X - startX) + gradientY.Varying[j] * (block.Y - startY);
uint32_t *dest = destOrg + block.X + block.Y * pitch;
uint32_t *subsector = subsectorGBuffer + block.X + block.Y * pitch;
uint32_t mask0 = block.Mask0;
uint32_t mask1 = block.Mask1;
for (int y = 0; y < 4; y++)
{
ScreenTriangleStepVariables blockPosX = blockPosY;
float rcpW = 0x01000000 / blockPosX.W;
int32_t varyingPos[TriVertex::NumVarying];
for (int j = 0; j < TriVertex::NumVarying; j++)
varyingPos[j] = (int32_t)(blockPosX.Varying[j] * rcpW);
int lightpos = 256 - (int)(clamp(shade - MIN(24.0f, globVis * blockPosX.W) / 32.0f, 0.0f, 31.0f / 32.0f) * 256.0f);
blockPosX.W += gradientX.W * 8;
for (int j = 0; j < TriVertex::NumVarying; j++)
blockPosX.Varying[j] += gradientX.Varying[j] * 8;
rcpW = 0x01000000 / blockPosX.W;
int32_t varyingStep[TriVertex::NumVarying];
for (int j = 0; j < TriVertex::NumVarying; j++)
{
int32_t nextPos = (int32_t)(blockPosX.Varying[j] * rcpW);
varyingStep[j] = (nextPos - varyingPos[j]) / 8;
}
int lightnext = 256 - (int)(clamp(shade - MIN(24.0f, globVis * blockPosX.W) / 32.0f, 0.0f, 31.0f / 32.0f) * 256.0f);
int lightstep = (lightnext - lightpos) / 8;
for (int x = 0; x < 8; x++)
{
if (mask0 & (1 << 31))
{
int texelX = ((((uint32_t)varyingPos[0] << 8) >> 16) * texWidth) >> 16;
int texelY = ((((uint32_t)varyingPos[1] << 8) >> 16) * texHeight) >> 16;
uint32_t fg = texPixels[texelX * texHeight + texelY];
uint32_t r = RPART(fg);
uint32_t g = GPART(fg);
uint32_t b = BPART(fg);
r = r * lightpos / 256;
g = g * lightpos / 256;
b = b * lightpos / 256;
fg = 0xff000000 | (r << 16) | (g << 8) | b;
dest[x] = fg;
subsector[x] = subsectorDepth;
}
mask0 <<= 1;
for (int j = 0; j < TriVertex::NumVarying; j++)
varyingPos[j] += varyingStep[j];
lightpos += lightstep;
}
blockPosY.W += gradientY.W;
for (int j = 0; j < TriVertex::NumVarying; j++)
blockPosY.Varying[j] += gradientY.Varying[j];
dest += pitch;
subsector += pitch;
}
for (int y = 4; y < 8; y++)
{
ScreenTriangleStepVariables blockPosX = blockPosY;
float rcpW = 0x01000000 / blockPosX.W;
int32_t varyingPos[TriVertex::NumVarying];
for (int j = 0; j < TriVertex::NumVarying; j++)
varyingPos[j] = (int32_t)(blockPosX.Varying[j] * rcpW);
int lightpos = 256 - (int)(clamp(shade - MIN(24.0f, globVis * blockPosX.W) / 32.0f, 0.0f, 31.0f / 32.0f) * 256.0f);
blockPosX.W += gradientX.W * 8;
for (int j = 0; j < TriVertex::NumVarying; j++)
blockPosX.Varying[j] += gradientX.Varying[j] * 8;
rcpW = 0x01000000 / blockPosX.W;
int32_t varyingStep[TriVertex::NumVarying];
for (int j = 0; j < TriVertex::NumVarying; j++)
{
int32_t nextPos = (int32_t)(blockPosX.Varying[j] * rcpW);
varyingStep[j] = (nextPos - varyingPos[j]) / 8;
}
int lightnext = 256 - (int)(clamp(shade - MIN(24.0f, globVis * blockPosX.W) / 32.0f, 0.0f, 31.0f / 32.0f) * 256.0f);
int lightstep = (lightnext - lightpos) / 8;
for (int x = 0; x < 8; x++)
{
if (mask1 & (1 << 31))
{
int texelX = ((((uint32_t)varyingPos[0] << 8) >> 16) * texWidth) >> 16;
int texelY = ((((uint32_t)varyingPos[1] << 8) >> 16) * texHeight) >> 16;
uint32_t fg = texPixels[texelX * texHeight + texelY];
uint32_t r = RPART(fg);
uint32_t g = GPART(fg);
uint32_t b = BPART(fg);
r = r * lightpos / 256;
g = g * lightpos / 256;
b = b * lightpos / 256;
fg = 0xff000000 | (r << 16) | (g << 8) | b;
dest[x] = fg;
subsector[x] = subsectorDepth;
}
mask1 <<= 1;
for (int j = 0; j < TriVertex::NumVarying; j++)
varyingPos[j] += varyingStep[j];
lightpos += lightstep;
}
blockPosY.W += gradientY.W;
for (int j = 0; j < TriVertex::NumVarying; j++)
blockPosY.Varying[j] += gradientY.Varying[j];
dest += pitch;
subsector += pitch;
}
}
}
#endif

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/*
** Projected triangle drawer
** Copyright (c) 2016 Magnus Norddahl
**
** This software is provided 'as-is', without any express or implied
** warranty. In no event will the authors be held liable for any damages
** arising from the use of this software.
**
** Permission is granted to anyone to use this software for any purpose,
** including commercial applications, and to alter it and redistribute it
** freely, subject to the following restrictions:
**
** 1. The origin of this software must not be misrepresented; you must not
** claim that you wrote the original software. If you use this software
** in a product, an acknowledgment in the product documentation would be
** appreciated but is not required.
** 2. Altered source versions must be plainly marked as such, and must not be
** misrepresented as being the original software.
** 3. This notice may not be removed or altered from any source distribution.
**
*/
#pragma once
#include "swrenderer/drawers/r_drawers.h"
class ScreenTriangle
{
public:
static void SetupNormal(const TriDrawTriangleArgs *args, WorkerThreadData *thread);
static void SetupSubsector(const TriDrawTriangleArgs *args, WorkerThreadData *thread);
static void StencilWrite(const TriDrawTriangleArgs *args, WorkerThreadData *thread);
static void SubsectorWrite(const TriDrawTriangleArgs *args, WorkerThreadData *thread);
};
struct ScreenTriangleStepVariables
{
float W;
float Varying[TriVertex::NumVarying];
};

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/*
** Triangle drawers
** Copyright (c) 2016 Magnus Norddahl
**
** This software is provided 'as-is', without any express or implied
** warranty. In no event will the authors be held liable for any damages
** arising from the use of this software.
**
** Permission is granted to anyone to use this software for any purpose,
** including commercial applications, and to alter it and redistribute it
** freely, subject to the following restrictions:
**
** 1. The origin of this software must not be misrepresented; you must not
** claim that you wrote the original software. If you use this software
** in a product, an acknowledgment in the product documentation would be
** appreciated but is not required.
** 2. Altered source versions must be plainly marked as such, and must not be
** misrepresented as being the original software.
** 3. This notice may not be removed or altered from any source distribution.
**
*/
#include <stddef.h>
#include "templates.h"
#include "doomdef.h"
#include "i_system.h"
#include "w_wad.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 "tri_matrix.h"
#include "polyrenderer/drawers/poly_triangle.h"
#include "swrenderer/drawers/r_draw_rgba.h"
#include "swrenderer/r_main.h"
TriMatrix TriMatrix::null()
{
TriMatrix m;
memset(m.matrix, 0, sizeof(m.matrix));
return m;
}
TriMatrix TriMatrix::identity()
{
TriMatrix m = null();
m.matrix[0] = 1.0f;
m.matrix[5] = 1.0f;
m.matrix[10] = 1.0f;
m.matrix[15] = 1.0f;
return m;
}
TriMatrix TriMatrix::translate(float x, float y, float z)
{
TriMatrix m = identity();
m.matrix[0 + 3 * 4] = x;
m.matrix[1 + 3 * 4] = y;
m.matrix[2 + 3 * 4] = z;
return m;
}
TriMatrix TriMatrix::scale(float x, float y, float z)
{
TriMatrix m = null();
m.matrix[0 + 0 * 4] = x;
m.matrix[1 + 1 * 4] = y;
m.matrix[2 + 2 * 4] = z;
m.matrix[3 + 3 * 4] = 1;
return m;
}
TriMatrix TriMatrix::rotate(float angle, float x, float y, float z)
{
float c = cosf(angle);
float s = sinf(angle);
TriMatrix m = null();
m.matrix[0 + 0 * 4] = (x*x*(1.0f - c) + c);
m.matrix[0 + 1 * 4] = (x*y*(1.0f - c) - z*s);
m.matrix[0 + 2 * 4] = (x*z*(1.0f - c) + y*s);
m.matrix[1 + 0 * 4] = (y*x*(1.0f - c) + z*s);
m.matrix[1 + 1 * 4] = (y*y*(1.0f - c) + c);
m.matrix[1 + 2 * 4] = (y*z*(1.0f - c) - x*s);
m.matrix[2 + 0 * 4] = (x*z*(1.0f - c) - y*s);
m.matrix[2 + 1 * 4] = (y*z*(1.0f - c) + x*s);
m.matrix[2 + 2 * 4] = (z*z*(1.0f - c) + c);
m.matrix[3 + 3 * 4] = 1.0f;
return m;
}
TriMatrix TriMatrix::swapYZ()
{
TriMatrix m = null();
m.matrix[0 + 0 * 4] = 1.0f;
m.matrix[1 + 2 * 4] = 1.0f;
m.matrix[2 + 1 * 4] = -1.0f;
m.matrix[3 + 3 * 4] = 1.0f;
return m;
}
TriMatrix TriMatrix::perspective(float fovy, float aspect, float z_near, float z_far)
{
float f = (float)(1.0 / tan(fovy * M_PI / 360.0));
TriMatrix m = null();
m.matrix[0 + 0 * 4] = f / aspect;
m.matrix[1 + 1 * 4] = f;
m.matrix[2 + 2 * 4] = (z_far + z_near) / (z_near - z_far);
m.matrix[2 + 3 * 4] = (2.0f * z_far * z_near) / (z_near - z_far);
m.matrix[3 + 2 * 4] = -1.0f;
return m;
}
TriMatrix TriMatrix::frustum(float left, float right, float bottom, float top, float near, float far)
{
float a = (right + left) / (right - left);
float b = (top + bottom) / (top - bottom);
float c = -(far + near) / (far - near);
float d = -(2.0f * far) / (far - near);
TriMatrix m = null();
m.matrix[0 + 0 * 4] = 2.0f * near / (right - left);
m.matrix[1 + 1 * 4] = 2.0f * near / (top - bottom);
m.matrix[0 + 2 * 4] = a;
m.matrix[1 + 2 * 4] = b;
m.matrix[2 + 2 * 4] = c;
m.matrix[2 + 3 * 4] = d;
m.matrix[3 + 2 * 4] = -1;
return m;
}
TriMatrix TriMatrix::worldToView()
{
TriMatrix m = null();
m.matrix[0 + 0 * 4] = (float)ViewSin;
m.matrix[0 + 1 * 4] = (float)-ViewCos;
m.matrix[1 + 2 * 4] = 1.0f;
m.matrix[2 + 0 * 4] = (float)-ViewCos;
m.matrix[2 + 1 * 4] = (float)-ViewSin;
m.matrix[3 + 3 * 4] = 1.0f;
return m * translate((float)-ViewPos.X, (float)-ViewPos.Y, (float)-ViewPos.Z);
}
TriMatrix TriMatrix::viewToClip()
{
float near = 5.0f;
float far = 65536.0f;
float width = (float)(FocalTangent * near);
float top = (float)(swrenderer::CenterY / swrenderer::InvZtoScale * near);
float bottom = (float)(top - viewheight / swrenderer::InvZtoScale * near);
return frustum(-width, width, bottom, top, near, far);
}
TriMatrix TriMatrix::operator*(const TriMatrix &mult) const
{
TriMatrix result;
for (int x = 0; x < 4; x++)
{
for (int y = 0; y < 4; y++)
{
result.matrix[x + y * 4] =
matrix[0 * 4 + x] * mult.matrix[y * 4 + 0] +
matrix[1 * 4 + x] * mult.matrix[y * 4 + 1] +
matrix[2 * 4 + x] * mult.matrix[y * 4 + 2] +
matrix[3 * 4 + x] * mult.matrix[y * 4 + 3];
}
}
return result;
}
ShadedTriVertex TriMatrix::operator*(TriVertex v) const
{
float vx = matrix[0 * 4 + 0] * v.x + matrix[1 * 4 + 0] * v.y + matrix[2 * 4 + 0] * v.z + matrix[3 * 4 + 0] * v.w;
float vy = matrix[0 * 4 + 1] * v.x + matrix[1 * 4 + 1] * v.y + matrix[2 * 4 + 1] * v.z + matrix[3 * 4 + 1] * v.w;
float vz = matrix[0 * 4 + 2] * v.x + matrix[1 * 4 + 2] * v.y + matrix[2 * 4 + 2] * v.z + matrix[3 * 4 + 2] * v.w;
float vw = matrix[0 * 4 + 3] * v.x + matrix[1 * 4 + 3] * v.y + matrix[2 * 4 + 3] * v.z + matrix[3 * 4 + 3] * v.w;
ShadedTriVertex sv;
sv.x = vx;
sv.y = vy;
sv.z = vz;
sv.w = vw;
for (int i = 0; i < TriVertex::NumVarying; i++)
sv.varying[i] = v.varying[i];
return sv;
}

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/*
** Triangle drawers
** Copyright (c) 2016 Magnus Norddahl
**
** This software is provided 'as-is', without any express or implied
** warranty. In no event will the authors be held liable for any damages
** arising from the use of this software.
**
** Permission is granted to anyone to use this software for any purpose,
** including commercial applications, and to alter it and redistribute it
** freely, subject to the following restrictions:
**
** 1. The origin of this software must not be misrepresented; you must not
** claim that you wrote the original software. If you use this software
** in a product, an acknowledgment in the product documentation would be
** appreciated but is not required.
** 2. Altered source versions must be plainly marked as such, and must not be
** misrepresented as being the original software.
** 3. This notice may not be removed or altered from any source distribution.
**
*/
#pragma once
struct TriVertex;
struct ShadedTriVertex;
struct TriMatrix
{
static TriMatrix null();
static TriMatrix identity();
static TriMatrix translate(float x, float y, float z);
static TriMatrix scale(float x, float y, float z);
static TriMatrix rotate(float angle, float x, float y, float z);
static TriMatrix swapYZ();
static TriMatrix perspective(float fovy, float aspect, float near, float far);
static TriMatrix frustum(float left, float right, float bottom, float top, float near, float far);
static TriMatrix worldToView(); // Software renderer world to view space transform
static TriMatrix viewToClip(); // Software renderer shearing projection
ShadedTriVertex operator*(TriVertex v) const;
TriMatrix operator*(const TriMatrix &m) const;
float matrix[16];
};