mirror of
https://github.com/minetest/irrlicht.git
synced 2024-11-03 00:40:41 +01:00
3280b3319e
To avoid changing burnings now those functions have no IRRLICHT_FAST_MATH anymore, there's a new header irrMathFastCompat.h which has ..._fast functions doing the old behavior. With the troubles they have documented. I changed burnings to use those functions throughout. Or as much as possible... Burnings probably also uses classes like SColor which also have functions using those, but I don't plan to adapt them. Maybe IRRLICHT_FAST_MATH should be a flag exlusive to burnings in the future, I don't think it makes much sense otherwise anymore (it often expects 32-bit asm). git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@6012 dfc29bdd-3216-0410-991c-e03cc46cb475
931 lines
19 KiB
C++
931 lines
19 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 USE_SBUFFER
|
|
#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
|
|
#undef IPOL_T2
|
|
#undef IPOL_L0
|
|
|
|
// define render case
|
|
#define SUBTEXEL
|
|
//#define INVERSE_W
|
|
|
|
#define USE_ZBUFFER
|
|
#define USE_SBUFFER
|
|
#define IPOL_W
|
|
#define CMP_W
|
|
//#define WRITE_W
|
|
|
|
|
|
// apply global override
|
|
#ifndef SOFTWARE_DRIVER_2_PERSPECTIVE_CORRECT
|
|
#undef INVERSE_W
|
|
#endif
|
|
|
|
#ifndef SOFTWARE_DRIVER_2_SUBTEXEL
|
|
#undef SUBTEXEL
|
|
#endif
|
|
|
|
#ifndef SOFTWARE_DRIVER_2_USE_VERTEX_COLOR
|
|
#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 CTRStencilShadow : public IBurningShader
|
|
{
|
|
public:
|
|
|
|
//! constructor
|
|
CTRStencilShadow(CBurningVideoDriver* driver);
|
|
|
|
//! draws an indexed triangle list
|
|
virtual void drawTriangle ( const s4DVertex *a,const s4DVertex *b,const s4DVertex *c ) _IRR_OVERRIDE_;
|
|
virtual void setParam ( u32 index, f32 value) _IRR_OVERRIDE_;
|
|
|
|
private:
|
|
// fragment shader
|
|
typedef void (CTRStencilShadow::*tFragmentShader) ();
|
|
void fragment_zfail_decr ();
|
|
void fragment_zfail_incr ();
|
|
|
|
tFragmentShader fragmentShader;
|
|
|
|
sScanConvertData scan;
|
|
sScanLineData line;
|
|
|
|
};
|
|
|
|
//! constructor
|
|
CTRStencilShadow::CTRStencilShadow(CBurningVideoDriver* driver)
|
|
: IBurningShader(driver)
|
|
{
|
|
#ifdef _DEBUG
|
|
setDebugName("CTRStencilShadow");
|
|
#endif
|
|
}
|
|
|
|
|
|
/*!
|
|
*/
|
|
void CTRStencilShadow::setParam ( u32 index, f32 value)
|
|
{
|
|
u32 val = (u32) value;
|
|
|
|
// glStencilOp (fail,zfail,zpass
|
|
if ( index == 1 && val == 1 )
|
|
{
|
|
fragmentShader = &CTRStencilShadow::fragment_zfail_incr;
|
|
}
|
|
else
|
|
if ( index == 1 && val == 2 )
|
|
{
|
|
fragmentShader = &CTRStencilShadow::fragment_zfail_decr;
|
|
}
|
|
}
|
|
|
|
/*!
|
|
*/
|
|
void CTRStencilShadow::fragment_zfail_decr ()
|
|
{
|
|
if (!Stencil)
|
|
return;
|
|
//tVideoSample *dst;
|
|
|
|
#ifdef USE_ZBUFFER
|
|
fp24 *z;
|
|
#endif
|
|
|
|
#ifdef USE_SBUFFER
|
|
u32 *stencil;
|
|
#endif
|
|
|
|
s32 xStart;
|
|
s32 xEnd;
|
|
s32 dx;
|
|
|
|
#ifdef SUBTEXEL
|
|
f32 subPixel;
|
|
#endif
|
|
|
|
#ifdef IPOL_Z
|
|
f32 slopeZ;
|
|
#endif
|
|
#ifdef IPOL_W
|
|
fp24 slopeW;
|
|
#endif
|
|
#ifdef IPOL_C0
|
|
sVec4 slopeC[MATERIAL_MAX_COLORS];
|
|
#endif
|
|
#ifdef IPOL_T0
|
|
sVec2 slopeT[BURNING_MATERIAL_MAX_TEXTURES];
|
|
#endif
|
|
#ifdef IPOL_L0
|
|
sVec3 slopeL[BURNING_MATERIAL_MAX_TANGENT];
|
|
#endif
|
|
|
|
// apply top-left fill-convention, left
|
|
xStart = core::ceil32_fast( line.x[0] );
|
|
xEnd = core::ceil32_fast( line.x[1] ) - 1;
|
|
|
|
dx = xEnd - xStart;
|
|
|
|
if ( dx < 0 )
|
|
return;
|
|
|
|
// slopes
|
|
const f32 invDeltaX = core::reciprocal_approxim ( line.x[1] - line.x[0] );
|
|
|
|
#ifdef IPOL_Z
|
|
slopeZ = (line.z[1] - line.z[0]) * invDeltaX;
|
|
#endif
|
|
#ifdef IPOL_W
|
|
slopeW = (line.w[1] - line.w[0]) * invDeltaX;
|
|
#endif
|
|
#ifdef IPOL_C0
|
|
slopeC[0] = (line.c[0][1] - line.c[0][0]) * invDeltaX;
|
|
#endif
|
|
#ifdef IPOL_T0
|
|
slopeT[0] = (line.t[0][1] - line.t[0][0]) * invDeltaX;
|
|
#endif
|
|
#ifdef IPOL_T1
|
|
slopeT[1] = (line.t[1][1] - line.t[1][0]) * invDeltaX;
|
|
#endif
|
|
#ifdef IPOL_T2
|
|
slopeT[2] = (line.t[2][1] - line.t[2][0]) * invDeltaX;
|
|
#endif
|
|
#ifdef IPOL_L0
|
|
slopeL[0] = (line.l[0][1] - line.l[0][0]) * invDeltaX;
|
|
#endif
|
|
|
|
#ifdef SUBTEXEL
|
|
subPixel = ( (f32) xStart ) - line.x[0];
|
|
#ifdef IPOL_Z
|
|
line.z[0] += slopeZ * subPixel;
|
|
#endif
|
|
#ifdef IPOL_W
|
|
line.w[0] += slopeW * subPixel;
|
|
#endif
|
|
#ifdef IPOL_C0
|
|
line.c[0][0] += slopeC[0] * subPixel;
|
|
#endif
|
|
#ifdef IPOL_T0
|
|
line.t[0][0] += slopeT[0] * subPixel;
|
|
#endif
|
|
#ifdef IPOL_T1
|
|
line.t[1][0] += slopeT[1] * subPixel;
|
|
#endif
|
|
#ifdef IPOL_T2
|
|
line.t[2][0] += slopeT[2] * subPixel;
|
|
#endif
|
|
#ifdef IPOL_L0
|
|
line.l[0][0] += slopeL[0] * subPixel;
|
|
#endif
|
|
#endif
|
|
|
|
//dst = (tVideoSample*)RenderTarget->getData() + ( line.y * RenderTarget->getDimension().Width ) + xStart;
|
|
|
|
#ifdef USE_ZBUFFER
|
|
z = (fp24*) DepthBuffer->lock() + ( line.y * RenderTarget->getDimension().Width ) + xStart;
|
|
#endif
|
|
|
|
#ifdef USE_SBUFFER
|
|
stencil = (u32*) Stencil->lock() + ( line.y * RenderTarget->getDimension().Width ) + xStart;
|
|
#endif
|
|
|
|
|
|
#ifdef INVERSE_W
|
|
f32 inversew;
|
|
#endif
|
|
|
|
|
|
#ifdef IPOL_C0
|
|
tFixPoint r3, g3, b3;
|
|
#endif
|
|
|
|
for ( s32 i = 0; i <= dx; i++ )
|
|
{
|
|
#ifdef CMP_Z
|
|
if ( line.z[0] < z[i] )
|
|
#endif
|
|
#ifdef CMP_W
|
|
if ( line.w[0] < z[i] )
|
|
#endif
|
|
{
|
|
// zfail
|
|
stencil[i] -= 1;
|
|
}
|
|
|
|
#ifdef IPOL_Z
|
|
line.z[0] += slopeZ;
|
|
#endif
|
|
#ifdef IPOL_W
|
|
line.w[0] += slopeW;
|
|
#endif
|
|
#ifdef IPOL_C0
|
|
line.c[0][0] += slopeC[0];
|
|
#endif
|
|
#ifdef IPOL_T0
|
|
line.t[0][0] += slopeT[0];
|
|
#endif
|
|
#ifdef IPOL_T1
|
|
line.t[1][0] += slopeT[1];
|
|
#endif
|
|
#ifdef IPOL_T2
|
|
line.t[2][0] += slopeT[2];
|
|
#endif
|
|
#ifdef IPOL_L0
|
|
line.l[0][0] += slopeL[0];
|
|
#endif
|
|
}
|
|
}
|
|
|
|
/*!
|
|
*/
|
|
void CTRStencilShadow::fragment_zfail_incr()
|
|
{
|
|
if (!Stencil)
|
|
return;
|
|
//tVideoSample *dst;
|
|
|
|
#ifdef USE_ZBUFFER
|
|
fp24 *z;
|
|
#endif
|
|
|
|
#ifdef USE_SBUFFER
|
|
u32 *stencil;
|
|
#endif
|
|
|
|
s32 xStart;
|
|
s32 xEnd;
|
|
s32 dx;
|
|
|
|
|
|
#ifdef SUBTEXEL
|
|
f32 subPixel;
|
|
#endif
|
|
|
|
#ifdef IPOL_Z
|
|
f32 slopeZ;
|
|
#endif
|
|
#ifdef IPOL_W
|
|
fp24 slopeW;
|
|
#endif
|
|
#ifdef IPOL_C0
|
|
sVec4 slopeC[MATERIAL_MAX_COLORS];
|
|
#endif
|
|
#ifdef IPOL_T0
|
|
sVec2 slopeT[BURNING_MATERIAL_MAX_TEXTURES];
|
|
#endif
|
|
#ifdef IPOL_L0
|
|
sVec3 slopeL[BURNING_MATERIAL_MAX_TANGENT];
|
|
#endif
|
|
|
|
// apply top-left fill-convention, left
|
|
xStart = core::ceil32_fast( line.x[0] );
|
|
xEnd = core::ceil32_fast( line.x[1] ) - 1;
|
|
|
|
dx = xEnd - xStart;
|
|
|
|
if ( dx < 0 )
|
|
return;
|
|
|
|
// slopes
|
|
const f32 invDeltaX = core::reciprocal_approxim ( line.x[1] - line.x[0] );
|
|
|
|
#ifdef IPOL_Z
|
|
slopeZ = (line.z[1] - line.z[0]) * invDeltaX;
|
|
#endif
|
|
#ifdef IPOL_W
|
|
slopeW = (line.w[1] - line.w[0]) * invDeltaX;
|
|
#endif
|
|
#ifdef IPOL_C0
|
|
slopeC[0] = (line.c[0][1] - line.c[0][0]) * invDeltaX;
|
|
#endif
|
|
#ifdef IPOL_T0
|
|
slopeT[0] = (line.t[0][1] - line.t[0][0]) * invDeltaX;
|
|
#endif
|
|
#ifdef IPOL_T1
|
|
slopeT[1] = (line.t[1][1] - line.t[1][0]) * invDeltaX;
|
|
#endif
|
|
#ifdef IPOL_T2
|
|
slopeT[2] = (line.t[2][1] - line.t[2][0]) * invDeltaX;
|
|
#endif
|
|
#ifdef IPOL_L0
|
|
slopeL[0] = (line.l[0][1] - line.l[0][0]) * invDeltaX;
|
|
#endif
|
|
|
|
#ifdef SUBTEXEL
|
|
subPixel = ( (f32) xStart ) - line.x[0];
|
|
#ifdef IPOL_Z
|
|
line.z[0] += slopeZ * subPixel;
|
|
#endif
|
|
#ifdef IPOL_W
|
|
line.w[0] += slopeW * subPixel;
|
|
#endif
|
|
#ifdef IPOL_C0
|
|
line.c[0][0] += slopeC[0] * subPixel;
|
|
#endif
|
|
#ifdef IPOL_T0
|
|
line.t[0][0] += slopeT[0] * subPixel;
|
|
#endif
|
|
#ifdef IPOL_T1
|
|
line.t[1][0] += slopeT[1] * subPixel;
|
|
#endif
|
|
#ifdef IPOL_T2
|
|
line.t[2][0] += slopeT[2] * subPixel;
|
|
#endif
|
|
#ifdef IPOL_L0
|
|
line.l[0][0] += slopeL[0] * subPixel;
|
|
#endif
|
|
#endif
|
|
|
|
//dst = (tVideoSample*)RenderTarget->getData() + ( line.y * RenderTarget->getDimension().Width ) + xStart;
|
|
|
|
#ifdef USE_ZBUFFER
|
|
z = (fp24*) DepthBuffer->lock() + ( line.y * RenderTarget->getDimension().Width ) + xStart;
|
|
#endif
|
|
|
|
#ifdef USE_SBUFFER
|
|
stencil = (u32*) Stencil->lock() + ( line.y * RenderTarget->getDimension().Width ) + xStart;
|
|
#endif
|
|
|
|
#ifdef INVERSE_W
|
|
f32 inversew;
|
|
#endif
|
|
|
|
#ifdef IPOL_C0
|
|
tFixPoint r3, g3, b3;
|
|
#endif
|
|
|
|
for ( s32 i = 0; i <= dx; i++ )
|
|
{
|
|
#ifdef CMP_Z
|
|
if ( line.z[0] < z[i] )
|
|
#endif
|
|
#ifdef CMP_W
|
|
if ( line.w[0] < z[i] )
|
|
#endif
|
|
{
|
|
// zfail
|
|
stencil[i] += 1;
|
|
}
|
|
|
|
#ifdef IPOL_Z
|
|
line.z[0] += slopeZ;
|
|
#endif
|
|
#ifdef IPOL_W
|
|
line.w[0] += slopeW;
|
|
#endif
|
|
#ifdef IPOL_C0
|
|
line.c[0][0] += slopeC[0];
|
|
#endif
|
|
#ifdef IPOL_T0
|
|
line.t[0][0] += slopeT[0];
|
|
#endif
|
|
#ifdef IPOL_T1
|
|
line.t[1][0] += slopeT[1];
|
|
#endif
|
|
#ifdef IPOL_T2
|
|
line.t[2][0] += slopeT[2];
|
|
#endif
|
|
#ifdef IPOL_L0
|
|
line.l[0][0] += slopeL[0];
|
|
#endif
|
|
}
|
|
}
|
|
|
|
void CTRStencilShadow::drawTriangle ( const s4DVertex *a,const s4DVertex *b,const s4DVertex *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);
|
|
|
|
const f32 ca = c->Pos.y - a->Pos.y;
|
|
const f32 ba = b->Pos.y - a->Pos.y;
|
|
const f32 cb = c->Pos.y - b->Pos.y;
|
|
// calculate delta y of the edges
|
|
scan.invDeltaY[0] = core::reciprocal( ca );
|
|
scan.invDeltaY[1] = core::reciprocal( ba );
|
|
scan.invDeltaY[2] = core::reciprocal( cb );
|
|
|
|
if ( F32_LOWER_EQUAL_0 ( scan.invDeltaY[0] ) )
|
|
return;
|
|
|
|
// find if the major edge is left or right aligned
|
|
f32 temp[4];
|
|
|
|
temp[0] = a->Pos.x - c->Pos.x;
|
|
temp[1] = -ca;
|
|
temp[2] = b->Pos.x - a->Pos.x;
|
|
temp[3] = ba;
|
|
|
|
scan.left = ( temp[0] * temp[3] - temp[1] * temp[2] ) > 0.f ? 0 : 1;
|
|
scan.right = 1 - scan.left;
|
|
|
|
// calculate slopes for the major edge
|
|
scan.slopeX[0] = (c->Pos.x - a->Pos.x) * scan.invDeltaY[0];
|
|
scan.x[0] = a->Pos.x;
|
|
|
|
#ifdef IPOL_Z
|
|
scan.slopeZ[0] = (c->Pos.z - a->Pos.z) * scan.invDeltaY[0];
|
|
scan.z[0] = a->Pos.z;
|
|
#endif
|
|
|
|
#ifdef IPOL_W
|
|
scan.slopeW[0] = (c->Pos.w - a->Pos.w) * scan.invDeltaY[0];
|
|
scan.w[0] = a->Pos.w;
|
|
#endif
|
|
|
|
#ifdef IPOL_C0
|
|
scan.slopeC[0][0] = (c->Color[0] - a->Color[0]) * scan.invDeltaY[0];
|
|
scan.c[0][0] = a->Color[0];
|
|
#endif
|
|
|
|
#ifdef IPOL_T0
|
|
scan.slopeT[0][0] = (c->Tex[0] - a->Tex[0]) * scan.invDeltaY[0];
|
|
scan.t[0][0] = a->Tex[0];
|
|
#endif
|
|
|
|
#ifdef IPOL_T1
|
|
scan.slopeT[1][0] = (c->Tex[1] - a->Tex[1]) * scan.invDeltaY[0];
|
|
scan.t[1][0] = a->Tex[1];
|
|
#endif
|
|
|
|
#ifdef IPOL_T2
|
|
scan.slopeT[2][0] = (c->Tex[2] - a->Tex[2]) * scan.invDeltaY[0];
|
|
scan.t[2][0] = a->Tex[2];
|
|
#endif
|
|
|
|
#ifdef IPOL_L0
|
|
scan.slopeL[0][0] = (c->LightTangent[0] - a->LightTangent[0]) * scan.invDeltaY[0];
|
|
scan.l[0][0] = a->LightTangent[0];
|
|
#endif
|
|
|
|
// top left fill convention y run
|
|
s32 yStart;
|
|
s32 yEnd;
|
|
|
|
#ifdef SUBTEXEL
|
|
f32 subPixel;
|
|
#endif
|
|
|
|
// rasterize upper sub-triangle
|
|
//if ( (f32) 0.0 != scan.invDeltaY[1] )
|
|
if ( F32_GREATER_0 ( scan.invDeltaY[1] ) )
|
|
{
|
|
// calculate slopes for top edge
|
|
scan.slopeX[1] = (b->Pos.x - a->Pos.x) * scan.invDeltaY[1];
|
|
scan.x[1] = a->Pos.x;
|
|
|
|
#ifdef IPOL_Z
|
|
scan.slopeZ[1] = (b->Pos.z - a->Pos.z) * scan.invDeltaY[1];
|
|
scan.z[1] = a->Pos.z;
|
|
#endif
|
|
|
|
#ifdef IPOL_W
|
|
scan.slopeW[1] = (b->Pos.w - a->Pos.w) * scan.invDeltaY[1];
|
|
scan.w[1] = a->Pos.w;
|
|
#endif
|
|
|
|
#ifdef IPOL_C0
|
|
scan.slopeC[0][1] = (b->Color[0] - a->Color[0]) * scan.invDeltaY[1];
|
|
scan.c[0][1] = a->Color[0];
|
|
#endif
|
|
|
|
#ifdef IPOL_T0
|
|
scan.slopeT[0][1] = (b->Tex[0] - a->Tex[0]) * scan.invDeltaY[1];
|
|
scan.t[0][1] = a->Tex[0];
|
|
#endif
|
|
|
|
#ifdef IPOL_T1
|
|
scan.slopeT[1][1] = (b->Tex[1] - a->Tex[1]) * scan.invDeltaY[1];
|
|
scan.t[1][1] = a->Tex[1];
|
|
#endif
|
|
|
|
#ifdef IPOL_T2
|
|
scan.slopeT[2][1] = (b->Tex[2] - a->Tex[2]) * scan.invDeltaY[1];
|
|
scan.t[2][1] = a->Tex[2];
|
|
#endif
|
|
|
|
#ifdef IPOL_L0
|
|
scan.slopeL[0][1] = (b->LightTangent[0] - a->LightTangent[0]) * scan.invDeltaY[1];
|
|
scan.l[0][1] = a->LightTangent[0];
|
|
#endif
|
|
|
|
// apply top-left fill convention, top part
|
|
yStart = core::ceil32_fast( a->Pos.y );
|
|
yEnd = core::ceil32_fast( b->Pos.y ) - 1;
|
|
|
|
#ifdef SUBTEXEL
|
|
subPixel = ( (f32) yStart ) - a->Pos.y;
|
|
|
|
// correct to pixel center
|
|
scan.x[0] += scan.slopeX[0] * subPixel;
|
|
scan.x[1] += scan.slopeX[1] * subPixel;
|
|
|
|
#ifdef IPOL_Z
|
|
scan.z[0] += scan.slopeZ[0] * subPixel;
|
|
scan.z[1] += scan.slopeZ[1] * subPixel;
|
|
#endif
|
|
|
|
#ifdef IPOL_W
|
|
scan.w[0] += scan.slopeW[0] * subPixel;
|
|
scan.w[1] += scan.slopeW[1] * subPixel;
|
|
#endif
|
|
|
|
#ifdef IPOL_C0
|
|
scan.c[0][0] += scan.slopeC[0][0] * subPixel;
|
|
scan.c[0][1] += scan.slopeC[0][1] * subPixel;
|
|
#endif
|
|
|
|
#ifdef IPOL_T0
|
|
scan.t[0][0] += scan.slopeT[0][0] * subPixel;
|
|
scan.t[0][1] += scan.slopeT[0][1] * subPixel;
|
|
#endif
|
|
|
|
#ifdef IPOL_T1
|
|
scan.t[1][0] += scan.slopeT[1][0] * subPixel;
|
|
scan.t[1][1] += scan.slopeT[1][1] * subPixel;
|
|
#endif
|
|
|
|
#ifdef IPOL_T2
|
|
scan.t[2][0] += scan.slopeT[2][0] * subPixel;
|
|
scan.t[2][1] += scan.slopeT[2][1] * subPixel;
|
|
#endif
|
|
|
|
#ifdef IPOL_L0
|
|
scan.l[0][0] += scan.slopeL[0][0] * subPixel;
|
|
scan.l[0][1] += scan.slopeL[0][1] * subPixel;
|
|
#endif
|
|
|
|
#endif
|
|
|
|
// rasterize the edge scanlines
|
|
for( line.y = yStart; line.y <= yEnd; ++line.y)
|
|
{
|
|
line.x[scan.left] = scan.x[0];
|
|
line.x[scan.right] = scan.x[1];
|
|
|
|
#ifdef IPOL_Z
|
|
line.z[scan.left] = scan.z[0];
|
|
line.z[scan.right] = scan.z[1];
|
|
#endif
|
|
|
|
#ifdef IPOL_W
|
|
line.w[scan.left] = scan.w[0];
|
|
line.w[scan.right] = scan.w[1];
|
|
#endif
|
|
|
|
#ifdef IPOL_C0
|
|
line.c[0][scan.left] = scan.c[0][0];
|
|
line.c[0][scan.right] = scan.c[0][1];
|
|
#endif
|
|
|
|
#ifdef IPOL_T0
|
|
line.t[0][scan.left] = scan.t[0][0];
|
|
line.t[0][scan.right] = scan.t[0][1];
|
|
#endif
|
|
|
|
#ifdef IPOL_T1
|
|
line.t[1][scan.left] = scan.t[1][0];
|
|
line.t[1][scan.right] = scan.t[1][1];
|
|
#endif
|
|
|
|
#ifdef IPOL_T2
|
|
line.t[2][scan.left] = scan.t[2][0];
|
|
line.t[2][scan.right] = scan.t[2][1];
|
|
#endif
|
|
|
|
#ifdef IPOL_L0
|
|
line.l[0][scan.left] = scan.l[0][0];
|
|
line.l[0][scan.right] = scan.l[0][1];
|
|
#endif
|
|
|
|
// render a scanline
|
|
(this->*fragmentShader) ();
|
|
|
|
scan.x[0] += scan.slopeX[0];
|
|
scan.x[1] += scan.slopeX[1];
|
|
|
|
#ifdef IPOL_Z
|
|
scan.z[0] += scan.slopeZ[0];
|
|
scan.z[1] += scan.slopeZ[1];
|
|
#endif
|
|
|
|
#ifdef IPOL_W
|
|
scan.w[0] += scan.slopeW[0];
|
|
scan.w[1] += scan.slopeW[1];
|
|
#endif
|
|
|
|
#ifdef IPOL_C0
|
|
scan.c[0][0] += scan.slopeC[0][0];
|
|
scan.c[0][1] += scan.slopeC[0][1];
|
|
#endif
|
|
|
|
#ifdef IPOL_T0
|
|
scan.t[0][0] += scan.slopeT[0][0];
|
|
scan.t[0][1] += scan.slopeT[0][1];
|
|
#endif
|
|
|
|
#ifdef IPOL_T1
|
|
scan.t[1][0] += scan.slopeT[1][0];
|
|
scan.t[1][1] += scan.slopeT[1][1];
|
|
#endif
|
|
|
|
#ifdef IPOL_T2
|
|
scan.t[2][0] += scan.slopeT[2][0];
|
|
scan.t[2][1] += scan.slopeT[2][1];
|
|
#endif
|
|
|
|
#ifdef IPOL_L0
|
|
scan.l[0][0] += scan.slopeL[0][0];
|
|
scan.l[0][1] += scan.slopeL[0][1];
|
|
#endif
|
|
|
|
}
|
|
}
|
|
|
|
// rasterize lower sub-triangle
|
|
//if ( (f32) 0.0 != scan.invDeltaY[2] )
|
|
if ( F32_GREATER_0 ( scan.invDeltaY[2] ) )
|
|
{
|
|
// advance to middle point
|
|
//if( (f32) 0.0 != scan.invDeltaY[1] )
|
|
if ( F32_GREATER_0 ( scan.invDeltaY[1] ) )
|
|
{
|
|
temp[0] = b->Pos.y - a->Pos.y; // dy
|
|
|
|
scan.x[0] = a->Pos.x + scan.slopeX[0] * temp[0];
|
|
#ifdef IPOL_Z
|
|
scan.z[0] = a->Pos.z + scan.slopeZ[0] * temp[0];
|
|
#endif
|
|
#ifdef IPOL_W
|
|
scan.w[0] = a->Pos.w + scan.slopeW[0] * temp[0];
|
|
#endif
|
|
#ifdef IPOL_C0
|
|
scan.c[0][0] = a->Color[0] + scan.slopeC[0][0] * temp[0];
|
|
#endif
|
|
#ifdef IPOL_T0
|
|
scan.t[0][0] = a->Tex[0] + scan.slopeT[0][0] * temp[0];
|
|
#endif
|
|
#ifdef IPOL_T1
|
|
scan.t[1][0] = a->Tex[1] + scan.slopeT[1][0] * temp[0];
|
|
#endif
|
|
#ifdef IPOL_T2
|
|
scan.t[2][0] = a->Tex[2] + scan.slopeT[2][0] * temp[0];
|
|
#endif
|
|
#ifdef IPOL_L0
|
|
scan.l[0][0] = a->LightTangent[0] + scan.slopeL[0][0] * temp[0];
|
|
#endif
|
|
|
|
}
|
|
|
|
// calculate slopes for bottom edge
|
|
scan.slopeX[1] = (c->Pos.x - b->Pos.x) * scan.invDeltaY[2];
|
|
scan.x[1] = b->Pos.x;
|
|
|
|
#ifdef IPOL_Z
|
|
scan.slopeZ[1] = (c->Pos.z - b->Pos.z) * scan.invDeltaY[2];
|
|
scan.z[1] = b->Pos.z;
|
|
#endif
|
|
|
|
#ifdef IPOL_W
|
|
scan.slopeW[1] = (c->Pos.w - b->Pos.w) * scan.invDeltaY[2];
|
|
scan.w[1] = b->Pos.w;
|
|
#endif
|
|
|
|
#ifdef IPOL_C0
|
|
scan.slopeC[0][1] = (c->Color[0] - b->Color[0]) * scan.invDeltaY[2];
|
|
scan.c[0][1] = b->Color[0];
|
|
#endif
|
|
|
|
#ifdef IPOL_T0
|
|
scan.slopeT[0][1] = (c->Tex[0] - b->Tex[0]) * scan.invDeltaY[2];
|
|
scan.t[0][1] = b->Tex[0];
|
|
#endif
|
|
|
|
#ifdef IPOL_T1
|
|
scan.slopeT[1][1] = (c->Tex[1] - b->Tex[1]) * scan.invDeltaY[2];
|
|
scan.t[1][1] = b->Tex[1];
|
|
#endif
|
|
|
|
#ifdef IPOL_T2
|
|
scan.slopeT[2][1] = (c->Tex[2] - b->Tex[2]) * scan.invDeltaY[2];
|
|
scan.t[2][1] = b->Tex[2];
|
|
#endif
|
|
|
|
#ifdef IPOL_L0
|
|
scan.slopeL[0][1] = (c->LightTangent[0] - b->LightTangent[0]) * scan.invDeltaY[2];
|
|
scan.l[0][1] = b->LightTangent[0];
|
|
#endif
|
|
|
|
// apply top-left fill convention, top part
|
|
yStart = core::ceil32_fast( b->Pos.y );
|
|
yEnd = core::ceil32_fast( c->Pos.y ) - 1;
|
|
|
|
#ifdef SUBTEXEL
|
|
|
|
subPixel = ( (f32) yStart ) - b->Pos.y;
|
|
|
|
// correct to pixel center
|
|
scan.x[0] += scan.slopeX[0] * subPixel;
|
|
scan.x[1] += scan.slopeX[1] * subPixel;
|
|
|
|
#ifdef IPOL_Z
|
|
scan.z[0] += scan.slopeZ[0] * subPixel;
|
|
scan.z[1] += scan.slopeZ[1] * subPixel;
|
|
#endif
|
|
|
|
#ifdef IPOL_W
|
|
scan.w[0] += scan.slopeW[0] * subPixel;
|
|
scan.w[1] += scan.slopeW[1] * subPixel;
|
|
#endif
|
|
|
|
#ifdef IPOL_C0
|
|
scan.c[0][0] += scan.slopeC[0][0] * subPixel;
|
|
scan.c[0][1] += scan.slopeC[0][1] * subPixel;
|
|
#endif
|
|
|
|
#ifdef IPOL_T0
|
|
scan.t[0][0] += scan.slopeT[0][0] * subPixel;
|
|
scan.t[0][1] += scan.slopeT[0][1] * subPixel;
|
|
#endif
|
|
|
|
#ifdef IPOL_T1
|
|
scan.t[1][0] += scan.slopeT[1][0] * subPixel;
|
|
scan.t[1][1] += scan.slopeT[1][1] * subPixel;
|
|
#endif
|
|
|
|
#ifdef IPOL_T2
|
|
scan.t[2][0] += scan.slopeT[2][0] * subPixel;
|
|
scan.t[2][1] += scan.slopeT[2][1] * subPixel;
|
|
#endif
|
|
|
|
#ifdef IPOL_L0
|
|
scan.l[0][0] += scan.slopeL[0][0] * subPixel;
|
|
scan.l[0][1] += scan.slopeL[0][1] * subPixel;
|
|
#endif
|
|
|
|
#endif
|
|
|
|
// rasterize the edge scanlines
|
|
for( line.y = yStart; line.y <= yEnd; ++line.y)
|
|
{
|
|
line.x[scan.left] = scan.x[0];
|
|
line.x[scan.right] = scan.x[1];
|
|
|
|
#ifdef IPOL_Z
|
|
line.z[scan.left] = scan.z[0];
|
|
line.z[scan.right] = scan.z[1];
|
|
#endif
|
|
|
|
#ifdef IPOL_W
|
|
line.w[scan.left] = scan.w[0];
|
|
line.w[scan.right] = scan.w[1];
|
|
#endif
|
|
|
|
#ifdef IPOL_C0
|
|
line.c[0][scan.left] = scan.c[0][0];
|
|
line.c[0][scan.right] = scan.c[0][1];
|
|
#endif
|
|
|
|
#ifdef IPOL_T0
|
|
line.t[0][scan.left] = scan.t[0][0];
|
|
line.t[0][scan.right] = scan.t[0][1];
|
|
#endif
|
|
|
|
#ifdef IPOL_T1
|
|
line.t[1][scan.left] = scan.t[1][0];
|
|
line.t[1][scan.right] = scan.t[1][1];
|
|
#endif
|
|
|
|
#ifdef IPOL_T2
|
|
line.t[2][scan.left] = scan.t[2][0];
|
|
line.t[2][scan.right] = scan.t[2][1];
|
|
#endif
|
|
|
|
#ifdef IPOL_L0
|
|
line.l[0][scan.left] = scan.l[0][0];
|
|
line.l[0][scan.right] = scan.l[0][1];
|
|
#endif
|
|
|
|
// render a scanline
|
|
(this->*fragmentShader) ();
|
|
|
|
scan.x[0] += scan.slopeX[0];
|
|
scan.x[1] += scan.slopeX[1];
|
|
|
|
#ifdef IPOL_Z
|
|
scan.z[0] += scan.slopeZ[0];
|
|
scan.z[1] += scan.slopeZ[1];
|
|
#endif
|
|
|
|
#ifdef IPOL_W
|
|
scan.w[0] += scan.slopeW[0];
|
|
scan.w[1] += scan.slopeW[1];
|
|
#endif
|
|
|
|
#ifdef IPOL_C0
|
|
scan.c[0][0] += scan.slopeC[0][0];
|
|
scan.c[0][1] += scan.slopeC[0][1];
|
|
#endif
|
|
|
|
#ifdef IPOL_T0
|
|
scan.t[0][0] += scan.slopeT[0][0];
|
|
scan.t[0][1] += scan.slopeT[0][1];
|
|
#endif
|
|
|
|
#ifdef IPOL_T1
|
|
scan.t[1][0] += scan.slopeT[1][0];
|
|
scan.t[1][1] += scan.slopeT[1][1];
|
|
#endif
|
|
#ifdef IPOL_T2
|
|
scan.t[2][0] += scan.slopeT[2][0];
|
|
scan.t[2][1] += scan.slopeT[2][1];
|
|
#endif
|
|
|
|
#ifdef IPOL_L0
|
|
scan.l[0][0] += scan.slopeL[0][0];
|
|
scan.l[0][1] += scan.slopeL[0][1];
|
|
#endif
|
|
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
|
|
} // end namespace video
|
|
} // end namespace irr
|
|
|
|
#endif // _IRR_COMPILE_WITH_BURNINGSVIDEO_
|
|
|
|
namespace irr
|
|
{
|
|
namespace video
|
|
{
|
|
|
|
|
|
//! creates a triangle renderer
|
|
IBurningShader* createTRStencilShadow(CBurningVideoDriver* driver)
|
|
{
|
|
#ifdef _IRR_COMPILE_WITH_BURNINGSVIDEO_
|
|
return new CTRStencilShadow(driver);
|
|
#else
|
|
return 0;
|
|
#endif // _IRR_COMPILE_WITH_BURNINGSVIDEO_
|
|
}
|
|
|
|
|
|
} // end namespace video
|
|
} // end namespace irr
|
|
|
|
|
|
|