irrlicht/source/Irrlicht/CTRTextureWire2.cpp

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// Copyright (C) 2002-2012 Nikolaus Gebhardt / Thomas Alten
// This file is part of the "Irrlicht Engine".
// For conditions of distribution and use, see copyright notice in irrlicht.h
#include "IrrCompileConfig.h"
#include "IBurningShader.h"
#ifdef _IRR_COMPILE_WITH_BURNINGSVIDEO_
// compile flag for this file
#undef USE_ZBUFFER
#undef IPOL_Z
#undef CMP_Z
#undef WRITE_Z
#undef IPOL_W
#undef CMP_W
#undef WRITE_W
#undef SUBTEXEL
#undef INVERSE_W
#undef IPOL_C0
#undef IPOL_T0
#undef IPOL_T1
// define render case
#define SUBTEXEL
#define INVERSE_W
//#define USE_ZBUFFER
#define IPOL_W
//#define CMP_W
//#define WRITE_W
#define IPOL_C0
//#define IPOL_T0
//#define IPOL_T1
// apply global override
#ifndef SOFTWARE_DRIVER_2_PERSPECTIVE_CORRECT
#undef INVERSE_W
#endif
#ifndef SOFTWARE_DRIVER_2_SUBTEXEL
#undef SUBTEXEL
#endif
#if BURNING_MATERIAL_MAX_COLORS < 1
#undef IPOL_C0
#endif
#if !defined ( SOFTWARE_DRIVER_2_USE_WBUFFER ) && defined ( USE_ZBUFFER )
#ifndef SOFTWARE_DRIVER_2_PERSPECTIVE_CORRECT
#undef IPOL_W
#endif
#define IPOL_Z
#ifdef CMP_W
#undef CMP_W
#define CMP_Z
#endif
#ifdef WRITE_W
#undef WRITE_W
#define WRITE_Z
#endif
#endif
namespace irr
{
namespace video
{
class CTRTextureWire2 : public IBurningShader
{
public:
//! constructor
CTRTextureWire2(CBurningVideoDriver* driver);
//! draws an indexed triangle list
virtual void drawTriangle(const s4DVertex* burning_restrict a, const s4DVertex* burning_restrict b, const s4DVertex* burning_restrict c) _IRR_OVERRIDE_;
virtual void drawLine ( const s4DVertex *a,const s4DVertex *b) _IRR_OVERRIDE_;
virtual void drawPoint( const s4DVertex *a) _IRR_OVERRIDE_;
virtual bool canWireFrame () _IRR_OVERRIDE_ { return true; }
virtual bool canPointCloud() _IRR_OVERRIDE_ { return true; }
protected:
virtual void scanline_bilinear ();
void renderAlphaLine ( const s4DVertex *a,const s4DVertex *b ) const;
void renderLine ( const s4DVertex *a,const s4DVertex *b, int renderZero = 0 ) const;
};
//! constructor
CTRTextureWire2::CTRTextureWire2(CBurningVideoDriver* driver)
: IBurningShader(driver)
{
#ifdef _DEBUG
setDebugName("CTRTextureWire2");
#endif
}
/*!
2d line
*/
void CTRTextureWire2::renderLine ( const s4DVertex *a,const s4DVertex *b, int renderZero) const
{
int pitch0 = RenderTarget->getDimension().Width << VIDEO_SAMPLE_GRANULARITY;
int pitch1 = RenderTarget->getDimension().Width << 2;
//todo:!
int aposx = fill_convention_none(a->Pos.x);
int aposy = fill_convention_none(a->Pos.y);
int bposx = fill_convention_none(b->Pos.x);
int bposy = fill_convention_none(b->Pos.y);
int dx = bposx - aposx;
int dy = bposy - aposy;
int c;
int m;
int d = 0;
int run;
tVideoSample *dst;
#ifdef USE_ZBUFFER
fp24 *z;
#endif
int xInc0 = 1 << VIDEO_SAMPLE_GRANULARITY;
int yInc0 = pitch0;
#ifdef USE_ZBUFFER
int xInc1 = 4;
int yInc1 = pitch1;
#endif
if ( dx < 0 )
{
xInc0 = - ( 1 << VIDEO_SAMPLE_GRANULARITY);
#ifdef USE_ZBUFFER
xInc1 = -4;
#endif
dx = -dx;
}
if ( dy > dx )
{
//swap
register s32 t;
t = dx;dx=dy;dy=t;
t = xInc0;xInc0=yInc0;yInc0=t;
#ifdef USE_ZBUFFER
t = xInc1;xInc1=yInc1;yInc1=t;
#endif
}
if (0 == dx)
{
if (!renderZero) return;
dx = 1;
}
SOFTWARE_DRIVER_2_CLIPCHECK_WIRE;
dst = (tVideoSample*) ( (u8*) RenderTarget->getData() + ( aposy * pitch0 ) + (aposx* (1<< VIDEO_SAMPLE_GRANULARITY) ) );
#ifdef USE_ZBUFFER
z = (fp24*) ( (u8*) (fp24*) DepthBuffer->lock() + ( aposy * pitch1 ) + (aposx << 2 ) );
#endif
c = dx << 1;
m = dy << 1;
// slopes
const f32 invDeltaX = reciprocal_zero2( (f32)dx );
#ifdef IPOL_Z
f32 slopeZ = (b->Pos.z - a->Pos.z) * invDeltaX;
f32 dataZ = a->Pos.z;
#endif
#ifdef IPOL_W
fp24 slopeW = (b->Pos.w - a->Pos.w) * invDeltaX;
fp24 dataW = a->Pos.w;
#endif
f32 inversew = FIX_POINT_F32_MUL;
tVideoSample color;
#if BURNING_MATERIAL_MAX_COLORS > 0
tFixPoint r0, g0, b0;
#ifdef IPOL_C0
sVec4 slopeC;
sVec4 C;
slopeC = (b->Color[0] - a->Color[0]) * invDeltaX;
C = a->Color[0];
#endif
#ifdef INVERSE_W
inversew = fix_inverse32_color(dataW);
#endif
vec4_to_fix( r0, g0, b0, a->Color[0], inversew);
color = fix_to_sample( r0, g0, b0 );
#else
color = (tVideoSample) 0xFFFFFFFF;
#endif
run = dx;
while ( run )
{
#ifdef CMP_Z
if ( *z >= dataZ )
#endif
#ifdef CMP_W
if ( dataW >= *z )
#endif
{
#ifdef WRITE_Z
*z = dataZ;
#endif
#ifdef WRITE_W
*z = dataW;
#endif
#ifdef IPOL_C0
#ifdef INVERSE_W
inversew = fix_inverse32_color(dataW);
#endif
vec4_to_fix(r0, g0, b0, C,inversew);
color = fix_to_sample( r0, g0, b0 );
#endif
*dst = color;
}
dst = (tVideoSample*) ( (u8*) dst + xInc0 ); // x += xInc
#ifdef CMP_Z
z = (fp24*) ( (u8*) z + xInc1 );
#endif
#ifdef CMP_W
z = (fp24*) ( (u8*) z + xInc1 );
#endif
d += m;
if ( d > dx )
{
dst = (tVideoSample*) ( (u8*) dst + yInc0 ); // y += yInc
#ifdef CMP_Z
z = (fp24*) ( (u8*) z + yInc1 );
#endif
#ifdef CMP_W
z = (fp24*) ( (u8*) z + yInc1 );
#endif
d -= c;
}
run -= 1;
#ifdef IPOL_Z
dataZ += slopeZ;
#endif
#ifdef IPOL_W
dataW += slopeW;
#endif
#ifdef IPOL_C0
C += slopeC;
#endif
}
}
void CTRTextureWire2::scanline_bilinear()
{
}
void CTRTextureWire2::drawTriangle(const s4DVertex* burning_restrict a, const s4DVertex* burning_restrict b, const s4DVertex* burning_restrict c)
{
// sort on height, y
if ( F32_A_GREATER_B ( a->Pos.y , b->Pos.y ) ) swapVertexPointer(&a, &b);
if ( F32_A_GREATER_B ( b->Pos.y , c->Pos.y ) ) swapVertexPointer(&b, &c);
if ( F32_A_GREATER_B ( a->Pos.y , b->Pos.y ) ) swapVertexPointer(&a, &b);
renderLine ( a, b );
renderLine ( b, c );
renderLine ( a, c );
}
void CTRTextureWire2::drawLine ( const s4DVertex *a,const s4DVertex *b)
{
// query access to TexMaps
// sort on height, y
if (F32_A_GREATER_B(a->Pos.y,b->Pos.y )) swapVertexPointer(&a, &b);
renderLine ( a, b );
}
void CTRTextureWire2::drawPoint(const s4DVertex *a)
{
if ( (a->flag & VERTEX4D_CLIPMASK ) == VERTEX4D_INSIDE ) renderLine(a, a,1);
}
} // end namespace video
} // end namespace irr
#endif // _IRR_COMPILE_WITH_BURNINGSVIDEO_
namespace irr
{
namespace video
{
//! creates a flat triangle renderer
IBurningShader* createTriangleRendererTextureGouraudWire2(CBurningVideoDriver* driver)
{
//ETR_TEXTURE_GOURAUD_WIRE
#ifdef _IRR_COMPILE_WITH_BURNINGSVIDEO_
return new CTRTextureWire2(driver);
#else
return 0;
#endif // _IRR_COMPILE_WITH_BURNINGSVIDEO_
}
} // end namespace video
} // end namespace irr