mirror of
https://github.com/minetest/irrlicht.git
synced 2024-11-16 15:30:25 +01:00
6f8b0cef96
git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@6091 dfc29bdd-3216-0410-991c-e03cc46cb475
347 lines
6.7 KiB
C++
347 lines
6.7 KiB
C++
// 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;
|
|
#ifdef USE_ZBUFFER
|
|
int pitch1 = RenderTarget->getDimension().Width << 2;
|
|
#endif
|
|
|
|
//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
|
|
|
|
|