299 lines
5.4 KiB
C++
299 lines
5.4 KiB
C++
// Copyright (C) 2002-2011 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 !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 *a,const s4DVertex *b,const s4DVertex *c );
|
|
virtual void drawLine ( const s4DVertex *a,const s4DVertex *b);
|
|
|
|
|
|
|
|
private:
|
|
void renderAlphaLine ( const s4DVertex *a,const s4DVertex *b ) const;
|
|
void renderLine ( const s4DVertex *a,const s4DVertex *b ) const;
|
|
|
|
};
|
|
|
|
//! constructor
|
|
CTRTextureWire2::CTRTextureWire2(CBurningVideoDriver* driver)
|
|
: IBurningShader(driver)
|
|
{
|
|
#ifdef _DEBUG
|
|
setDebugName("CTRTextureWire2");
|
|
#endif
|
|
}
|
|
|
|
|
|
// swap integer with xor
|
|
static inline void swap_xor ( s32 &a, s32 &b )
|
|
{
|
|
a ^= b;
|
|
b ^= a;
|
|
a ^= b;
|
|
}
|
|
|
|
|
|
/*!
|
|
*/
|
|
void CTRTextureWire2::renderLine ( const s4DVertex *a,const s4DVertex *b ) const
|
|
{
|
|
|
|
int pitch0 = RenderTarget->getDimension().Width << VIDEO_SAMPLE_GRANULARITY;
|
|
int pitch1 = RenderTarget->getDimension().Width << 2;
|
|
|
|
int aposx = (int) a->Pos.x;
|
|
int aposy = (int) a->Pos.y;
|
|
int bposx = (int) b->Pos.x;
|
|
int bposy = (int) 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;
|
|
|
|
int xInc1 = 4;
|
|
int yInc1 = pitch1;
|
|
|
|
tVideoSample color;
|
|
|
|
#ifdef SOFTWARE_DRIVER_2_USE_VERTEX_COLOR
|
|
tFixPoint r0, g0, b0;
|
|
getSample_color ( r0, g0, b0, a->Color[0] );
|
|
color = fix_to_color ( r0, g0, b0 );
|
|
#else
|
|
color = (tVideoSample) 0xFFFFFFFF;
|
|
#endif
|
|
|
|
if ( dx < 0 )
|
|
{
|
|
xInc0 = - ( 1 << VIDEO_SAMPLE_GRANULARITY);
|
|
xInc1 = -4;
|
|
dx = -dx;
|
|
}
|
|
|
|
if ( dy > dx )
|
|
{
|
|
swap_xor ( dx, dy );
|
|
swap_xor ( xInc0, yInc0 );
|
|
swap_xor ( xInc1, yInc1 );
|
|
}
|
|
|
|
if ( 0 == dx )
|
|
return;
|
|
|
|
dst = (tVideoSample*) ( (u8*) (tVideoSample*)RenderTarget->lock() + ( aposy * pitch0 ) + (aposx << VIDEO_SAMPLE_GRANULARITY ) );
|
|
#ifdef USE_ZBUFFER
|
|
z = (fp24*) ( (u8*) (fp24*) DepthBuffer->lock() + ( aposy * pitch1 ) + (aposx << 2 ) );
|
|
#endif
|
|
|
|
c = dx << 1;
|
|
m = dy << 1;
|
|
|
|
#ifdef IPOL_Z
|
|
f32 slopeZ = (b->Pos.z - a->Pos.z) / f32(dx);
|
|
f32 dataZ = a->Pos.z;
|
|
#endif
|
|
|
|
#ifdef IPOL_W
|
|
fp24 slopeW = (b->Pos.w - a->Pos.w) / f32( dx );
|
|
fp24 dataW = a->Pos.w;
|
|
#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
|
|
|
|
*dst = color;
|
|
|
|
}
|
|
|
|
dst = (tVideoSample*) ( (u8*) dst + xInc0 ); // x += xInc
|
|
#ifdef IPOL_Z
|
|
z = (fp24*) ( (u8*) z + xInc1 );
|
|
#endif
|
|
#ifdef IPOL_W
|
|
z = (fp24*) ( (u8*) z + xInc1 );
|
|
#endif
|
|
|
|
d += m;
|
|
if ( d > dx )
|
|
{
|
|
dst = (tVideoSample*) ( (u8*) dst + yInc0 ); // y += yInc
|
|
#ifdef IPOL_Z
|
|
z = (fp24*) ( (u8*) z + yInc1 );
|
|
#endif
|
|
#ifdef IPOL_W
|
|
z = (fp24*) ( (u8*) z + yInc1 );
|
|
#endif
|
|
|
|
d -= c;
|
|
}
|
|
run -= 1;
|
|
#ifdef IPOL_Z
|
|
dataZ += slopeZ;
|
|
#endif
|
|
#ifdef IPOL_W
|
|
dataW += slopeW;
|
|
#endif
|
|
|
|
}
|
|
|
|
}
|
|
|
|
void CTRTextureWire2::drawTriangle ( const s4DVertex *a,const s4DVertex *b,const s4DVertex *c )
|
|
{
|
|
sScanLineData line;
|
|
|
|
// 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 ( a->Pos.y > b->Pos.y ) swapVertexPointer(&a, &b);
|
|
|
|
renderLine ( a, b );
|
|
|
|
}
|
|
|
|
|
|
} // end namespace video
|
|
} // end namespace irr
|
|
|
|
#endif // _IRR_COMPILE_WITH_BURNINGSVIDEO_
|
|
|
|
namespace irr
|
|
{
|
|
namespace video
|
|
{
|
|
|
|
|
|
//! creates a flat triangle renderer
|
|
IBurningShader* createTriangleRendererTextureGouraudWire2(CBurningVideoDriver* driver)
|
|
{
|
|
#ifdef _IRR_COMPILE_WITH_BURNINGSVIDEO_
|
|
return new CTRTextureWire2(driver);
|
|
#else
|
|
return 0;
|
|
#endif // _IRR_COMPILE_WITH_BURNINGSVIDEO_
|
|
}
|
|
|
|
|
|
} // end namespace video
|
|
} // end namespace irr
|
|
|
|
|