mirror of
https://github.com/minetest/irrlicht.git
synced 2024-11-09 11:50:37 +01:00
5cb28ea357
- scissor for 2D - downscaled internal rendertargets,interlaced drawing - supertuxkart gui ok git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@6154 dfc29bdd-3216-0410-991c-e03cc46cb475
913 lines
20 KiB
C++
913 lines
20 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_C1
|
|
#undef IPOL_C2
|
|
#undef IPOL_T0
|
|
#undef IPOL_T1
|
|
#undef IPOL_L0
|
|
|
|
// 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_C1
|
|
//#define IPOL_C2
|
|
#define IPOL_T0
|
|
//#define IPOL_T1
|
|
//#define IPOL_L0
|
|
|
|
// 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 BURNING_MATERIAL_MAX_COLORS < 2
|
|
#undef IPOL_C1
|
|
#endif
|
|
|
|
#if BURNING_MATERIAL_MAX_COLORS < 3
|
|
#undef IPOL_C2
|
|
#endif
|
|
|
|
#if BURNING_MATERIAL_MAX_LIGHT_TANGENT < 1
|
|
#undef IPOL_L0
|
|
#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 CTRTextureGouraud2 : public IBurningShader
|
|
{
|
|
public:
|
|
|
|
//! constructor
|
|
CTRTextureGouraud2(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 bool canWireFrame () { return true; }
|
|
|
|
|
|
private:
|
|
void fragmentShader ();
|
|
};
|
|
|
|
//! constructor
|
|
CTRTextureGouraud2::CTRTextureGouraud2(CBurningVideoDriver* driver)
|
|
: IBurningShader(driver)
|
|
{
|
|
#ifdef _DEBUG
|
|
setDebugName("CTRTextureGouraud2");
|
|
#endif
|
|
}
|
|
|
|
|
|
|
|
/*!
|
|
*/
|
|
void CTRTextureGouraud2::fragmentShader ()
|
|
{
|
|
tVideoSample *dst;
|
|
|
|
#ifdef USE_ZBUFFER
|
|
fp24 *z;
|
|
#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[BURNING_MATERIAL_MAX_COLORS];
|
|
#endif
|
|
#ifdef IPOL_T0
|
|
sVec2 slopeT[BURNING_MATERIAL_MAX_TEXTURES];
|
|
#endif
|
|
|
|
#ifdef IPOL_L0
|
|
sVec3Pack_unpack slopeL[BURNING_MATERIAL_MAX_LIGHT_TANGENT];
|
|
#endif
|
|
|
|
// apply top-left fill-convention, left
|
|
xStart = fill_convention_left( line.x[0] );
|
|
xEnd = fill_convention_right( line.x[1] );
|
|
|
|
dx = xEnd - xStart;
|
|
|
|
if ( dx < 0 )
|
|
return;
|
|
|
|
// slopes
|
|
const f32 invDeltaX = fill_step_x( 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_C1
|
|
slopeC[1] = (line.c[1][1] - line.c[1][0]) * invDeltaX;
|
|
#endif
|
|
#ifdef IPOL_C2
|
|
slopeC[2] = (line.c[2][1] - line.c[2][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_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_C1
|
|
line.c[1][0] += slopeC[1] * subPixel;
|
|
#endif
|
|
#ifdef IPOL_C2
|
|
line.c[2][0] += slopeC[2] * 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_L0
|
|
line.l[0][0] += slopeL[0] * subPixel;
|
|
#endif
|
|
#endif
|
|
|
|
SOFTWARE_DRIVER_2_CLIPCHECK;
|
|
dst = (tVideoSample*)RenderTarget->getData() + ( line.y * RenderTarget->getDimension().Width ) + xStart;
|
|
|
|
#ifdef USE_ZBUFFER
|
|
z = (fp24*) DepthBuffer->lock() + ( line.y * RenderTarget->getDimension().Width ) + xStart;
|
|
#endif
|
|
|
|
|
|
f32 inversew = FIX_POINT_F32_MUL;
|
|
|
|
tFixPoint tx0;
|
|
tFixPoint ty0;
|
|
|
|
#ifdef IPOL_C0
|
|
tFixPoint r0, g0, b0;
|
|
tFixPoint r1, g1, b1;
|
|
#endif
|
|
|
|
#ifdef IPOL_C1
|
|
tFixPoint aFog = FIX_POINT_ONE;
|
|
#endif
|
|
|
|
|
|
#ifdef IPOL_C2
|
|
tFixPoint r3, g3, b3;
|
|
#endif
|
|
|
|
#if defined(BURNINGVIDEO_RENDERER_FAST) && COLOR_MAX==0xff
|
|
u32 dIndex = ( line.y & 3 ) << 2;
|
|
#endif
|
|
|
|
for ( s32 i = 0; i <= dx; i += SOFTWARE_DRIVER_2_STEP_X)
|
|
{
|
|
//if test active only first pixel
|
|
if ((0 == EdgeTestPass) & (i > line.x_edgetest)) break;
|
|
|
|
#ifdef CMP_Z
|
|
if ( line.z[0] < z[i] )
|
|
#endif
|
|
#ifdef CMP_W
|
|
if ( line.w[0] >= z[i] )
|
|
#endif
|
|
{
|
|
#ifdef WRITE_Z
|
|
z[i] = line.z[0];
|
|
#endif
|
|
#ifdef WRITE_W
|
|
z[i] = line.w[0];
|
|
#endif
|
|
|
|
#ifdef INVERSE_W
|
|
inversew = fix_inverse32 ( line.w[0] );
|
|
#endif
|
|
|
|
#ifdef IPOL_C1
|
|
//complete inside fog
|
|
if (TL_Flag & TL_FOG)
|
|
{
|
|
aFog = tofix(line.c[1][0].a, inversew);
|
|
if (aFog <= 0)
|
|
{
|
|
dst[i] = fog_color_sample;
|
|
continue;
|
|
}
|
|
}
|
|
#endif
|
|
tx0 = tofix ( line.t[0][0].x, inversew);
|
|
ty0 = tofix ( line.t[0][0].y, inversew);
|
|
|
|
|
|
#ifdef IPOL_C0
|
|
|
|
getSample_texture(r0, g0, b0, &IT[0], tx0, ty0);
|
|
vec4_to_fix(r1, g1, b1, line.c[0][0], inversew);
|
|
|
|
r0 = imulFix_simple(r0, r1);
|
|
g0 = imulFix_simple(g0, g1);
|
|
b0 = imulFix_simple(b0, b1);
|
|
|
|
#ifdef IPOL_C1
|
|
|
|
//specular highlight
|
|
if (TL_Flag & TL_SPECULAR)
|
|
{
|
|
vec4_to_fix(r1, g1, b1, line.c[1][0], inversew*COLOR_MAX);
|
|
r0 = clampfix_maxcolor(r1 + r0);
|
|
g0 = clampfix_maxcolor(g1 + g0);
|
|
b0 = clampfix_maxcolor(b1 + b0);
|
|
}
|
|
//mix with distance
|
|
if (aFog < FIX_POINT_ONE)
|
|
{
|
|
r0 = fog_color[1] + imulFix(aFog, r0 - fog_color[1]);
|
|
g0 = fog_color[2] + imulFix(aFog, g0 - fog_color[2]);
|
|
b0 = fog_color[3] + imulFix(aFog, b0 - fog_color[3]);
|
|
}
|
|
dst[i] = fix_to_sample(r0, g0, b0);
|
|
|
|
#else
|
|
dst[i] = fix_to_sample(
|
|
imulFix_simple(r0, r1),
|
|
imulFix_simple(g0, g1),
|
|
imulFix_simple(b0, b1)
|
|
);
|
|
#endif
|
|
|
|
#else
|
|
|
|
#if defined(BURNINGVIDEO_RENDERER_FAST) && COLOR_MAX==0xff
|
|
const tFixPointu d = dithermask [ dIndex | ( i ) & 3 ];
|
|
dst[i] = getTexel_plain ( &IT[0], d + tx0, d + ty0 );
|
|
#else
|
|
getSample_texture ( r0, g0, b0, &IT[0], tx0,ty0 );
|
|
dst[i] = fix_to_sample( r0, g0, b0 );
|
|
#endif
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
#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_C1
|
|
line.c[1][0] += slopeC[1];
|
|
#endif
|
|
#ifdef IPOL_C2
|
|
line.c[2][0] += slopeC[2];
|
|
#endif
|
|
#ifdef IPOL_T0
|
|
line.t[0][0] += slopeT[0];
|
|
#endif
|
|
#ifdef IPOL_T1
|
|
line.t[1][0] += slopeT[1];
|
|
#endif
|
|
#ifdef IPOL_L0
|
|
line.l[0][0] += slopeL[0];
|
|
#endif
|
|
}
|
|
|
|
}
|
|
|
|
void CTRTextureGouraud2::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);
|
|
|
|
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] = fill_step_y( ca );
|
|
scan.invDeltaY[1] = fill_step_y( ba );
|
|
scan.invDeltaY[2] = fill_step_y( 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_C1
|
|
scan.slopeC[1][0] = (c->Color[1] - a->Color[1]) * scan.invDeltaY[0];
|
|
scan.c[1][0] = a->Color[1];
|
|
#endif
|
|
|
|
#ifdef IPOL_C2
|
|
scan.slopeC[2][0] = (c->Color[2] - a->Color[2]) * scan.invDeltaY[0];
|
|
scan.c[2][0] = a->Color[2];
|
|
#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_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_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_C1
|
|
scan.slopeC[1][1] = (b->Color[1] - a->Color[1]) * scan.invDeltaY[1];
|
|
scan.c[1][1] = a->Color[1];
|
|
#endif
|
|
|
|
#ifdef IPOL_C2
|
|
scan.slopeC[2][1] = (b->Color[2] - a->Color[2]) * scan.invDeltaY[1];
|
|
scan.c[2][1] = a->Color[2];
|
|
#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_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 = fill_convention_left( a->Pos.y );
|
|
yEnd = fill_convention_right( b->Pos.y );
|
|
|
|
#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_C1
|
|
scan.c[1][0] += scan.slopeC[1][0] * subPixel;
|
|
scan.c[1][1] += scan.slopeC[1][1] * subPixel;
|
|
#endif
|
|
|
|
#ifdef IPOL_C2
|
|
scan.c[2][0] += scan.slopeC[2][0] * subPixel;
|
|
scan.c[2][1] += scan.slopeC[2][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_L0
|
|
scan.l[0][0] += scan.slopeL[0][0] * subPixel;
|
|
scan.l[0][1] += scan.slopeL[0][1] * subPixel;
|
|
#endif
|
|
|
|
#endif
|
|
line.x_edgetest = fill_convention_edge(scan.slopeX[scan.left]);
|
|
|
|
// rasterize the edge scanlines
|
|
for( line.y = yStart; line.y <= yEnd; line.y += SOFTWARE_DRIVER_2_STEP_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_C1
|
|
line.c[1][scan.left] = scan.c[1][0];
|
|
line.c[1][scan.right] = scan.c[1][1];
|
|
#endif
|
|
|
|
#ifdef IPOL_C2
|
|
line.c[2][scan.left] = scan.c[2][0];
|
|
line.c[2][scan.right] = scan.c[2][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_L0
|
|
line.l[0][scan.left] = scan.l[0][0];
|
|
line.l[0][scan.right] = scan.l[0][1];
|
|
#endif
|
|
|
|
// render a scanline
|
|
interlace_scanline fragmentShader ();
|
|
if ( EdgeTestPass & edge_test_first_line ) break;
|
|
|
|
|
|
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_C1
|
|
scan.c[1][0] += scan.slopeC[1][0];
|
|
scan.c[1][1] += scan.slopeC[1][1];
|
|
#endif
|
|
|
|
#ifdef IPOL_C2
|
|
scan.c[2][0] += scan.slopeC[2][0];
|
|
scan.c[2][1] += scan.slopeC[2][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_L0
|
|
scan.l[0][0] += scan.slopeL[0][0];
|
|
scan.l[0][1] += scan.slopeL[0][1];
|
|
#endif
|
|
|
|
}
|
|
}
|
|
|
|
// rasterize lower sub-triangle
|
|
if (F32_GREATER_0(scan.invDeltaY[2]) )
|
|
{
|
|
// advance to middle point
|
|
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_C1
|
|
scan.c[1][0] = a->Color[1] + scan.slopeC[1][0] * temp[0];
|
|
#endif
|
|
#ifdef IPOL_C2
|
|
scan.c[2][0] = a->Color[2] + scan.slopeC[2][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_L0
|
|
scan.l[0][0] = sVec3Pack_unpack(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_C1
|
|
scan.slopeC[1][1] = (c->Color[1] - b->Color[1]) * scan.invDeltaY[2];
|
|
scan.c[1][1] = b->Color[1];
|
|
#endif
|
|
|
|
#ifdef IPOL_C2
|
|
scan.slopeC[2][1] = (c->Color[2] - b->Color[2]) * scan.invDeltaY[2];
|
|
scan.c[2][1] = b->Color[2];
|
|
#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_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 = fill_convention_left( b->Pos.y );
|
|
yEnd = fill_convention_right( c->Pos.y );
|
|
|
|
#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_C1
|
|
scan.c[1][0] += scan.slopeC[1][0] * subPixel;
|
|
scan.c[1][1] += scan.slopeC[1][1] * subPixel;
|
|
#endif
|
|
|
|
#ifdef IPOL_C2
|
|
scan.c[2][0] += scan.slopeC[2][0] * subPixel;
|
|
scan.c[2][1] += scan.slopeC[2][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_L0
|
|
scan.l[0][0] += scan.slopeL[0][0] * subPixel;
|
|
scan.l[0][1] += scan.slopeL[0][1] * subPixel;
|
|
#endif
|
|
|
|
#endif
|
|
line.x_edgetest = fill_convention_edge(scan.slopeX[scan.left]);
|
|
|
|
// rasterize the edge scanlines
|
|
for( line.y = yStart; line.y <= yEnd; line.y += SOFTWARE_DRIVER_2_STEP_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_C1
|
|
line.c[1][scan.left] = scan.c[1][0];
|
|
line.c[1][scan.right] = scan.c[1][1];
|
|
#endif
|
|
|
|
#ifdef IPOL_C2
|
|
line.c[2][scan.left] = scan.c[2][0];
|
|
line.c[2][scan.right] = scan.c[2][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_L0
|
|
line.l[0][scan.left] = scan.l[0][0];
|
|
line.l[0][scan.right] = scan.l[0][1];
|
|
#endif
|
|
|
|
// render a scanline
|
|
interlace_scanline fragmentShader ();
|
|
if ( EdgeTestPass & edge_test_first_line ) break;
|
|
|
|
|
|
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_C1
|
|
scan.c[1][0] += scan.slopeC[1][0];
|
|
scan.c[1][1] += scan.slopeC[1][1];
|
|
#endif
|
|
|
|
#ifdef IPOL_C2
|
|
scan.c[2][0] += scan.slopeC[2][0];
|
|
scan.c[2][1] += scan.slopeC[2][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_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 flat triangle renderer
|
|
IBurningShader* createTriangleRendererTextureGouraud2(CBurningVideoDriver* driver)
|
|
{
|
|
// ETR_TEXTURE_GOURAUD
|
|
#ifdef _IRR_COMPILE_WITH_BURNINGSVIDEO_
|
|
return new CTRTextureGouraud2(driver);
|
|
#else
|
|
return 0;
|
|
#endif // _IRR_COMPILE_WITH_BURNINGSVIDEO_
|
|
}
|
|
|
|
|
|
} // end namespace video
|
|
} // end namespace irr
|
|
|
|
|
|
|