mirror of
https://github.com/OpenTrespasser/JurassicParkTrespasser.git
synced 2024-12-20 07:31:56 +00:00
213 lines
6.5 KiB
C++
213 lines
6.5 KiB
C++
|
/***********************************************************************************************
|
|||
|
|
*
|
|||
|
|
* Copyright <EFBFBD> DreamWorks Interactive. 1996
|
|||
|
|
*
|
|||
|
|
* Contents:
|
|||
|
|
* Primitive to "draw" interpolated normals onto a pre-existing bumpmap.
|
|||
|
|
*
|
|||
|
|
* Bugs:
|
|||
|
|
*
|
|||
|
|
* Notes:
|
|||
|
|
* This code works in exactly the same fashion as any other of the rendering primitives,
|
|||
|
|
* except that the Z-buffer is not implemented.
|
|||
|
|
*
|
|||
|
|
* To do:
|
|||
|
|
* Add a faster function for rotating one normal by another normal.
|
|||
|
|
*
|
|||
|
|
***********************************************************************************************
|
|||
|
|
*
|
|||
|
|
* $Log:: /JP2_PC/Source/Lib/Renderer/Primitives/LineBumpMake.hpp $
|
|||
|
|
*
|
|||
|
|
* 35 98.03.07 7:40p Mmouni
|
|||
|
|
* Removed DrawSubTriangle routine.
|
|||
|
|
*
|
|||
|
|
* 34 98/03/04 2:12p Mmouni
|
|||
|
|
* Made the DrawSubTriangle routine draw an extra pixel in x and y to reduce the number of
|
|||
|
|
* non-drawn pixels in curved bump-maps.
|
|||
|
|
*
|
|||
|
|
* 33 97/11/08 3:41p Pkeet
|
|||
|
|
* Removed Z template parameters and code.
|
|||
|
|
*
|
|||
|
|
* 32 97.10.15 7:41p Mmouni
|
|||
|
|
* Removed support for right to left scanlines.
|
|||
|
|
*
|
|||
|
|
* 31 97/10/12 20:42 Speter
|
|||
|
|
* Changed rv_face to cv_face.
|
|||
|
|
*
|
|||
|
|
* 30 97/08/07 11:35a Pkeet
|
|||
|
|
* Added interface support for mipmapping.
|
|||
|
|
*
|
|||
|
|
* 29 97/07/18 3:30p Pkeet
|
|||
|
|
* Removed use of the 'b_right' parameter from DrawSubTriangle.
|
|||
|
|
*
|
|||
|
|
* 28 97/07/16 15:51 Speter
|
|||
|
|
* InitializeTriangleData now takes two params to use as coefficients in derivative calculation
|
|||
|
|
* rather than f_invdx.
|
|||
|
|
*
|
|||
|
|
* 27 97/07/07 14:03 Speter
|
|||
|
|
* Now copy vertices for current polygon locally to arvRasterVertices, which is used rather than
|
|||
|
|
* rpoly.paprvPolyVertices for most DrawPolygon code. Renamed iY to iYScr, as it's now a union
|
|||
|
|
* with v3Cam, and set in InitializePolygonData.
|
|||
|
|
*
|
|||
|
|
* 26 97/06/27 15:29 Speter
|
|||
|
|
* Changed CGouraudOff to new CGouraudNone where appropriate. Added bIsPlanar() function.
|
|||
|
|
*
|
|||
|
|
* 25 6/16/97 8:36p Mlange
|
|||
|
|
* Updated for fixed::fxFromFloat() name change.
|
|||
|
|
*
|
|||
|
|
* 24 97/05/25 18:05 Speter
|
|||
|
|
* Changed CDrawTriangle to CDrawPolygon.
|
|||
|
|
*
|
|||
|
|
* 23 97-05-06 15:53 Speter
|
|||
|
|
* Now store bump curves using optimised axis-swap bump transform
|
|||
|
|
*
|
|||
|
|
* 22 97-03-31 22:25 Speter
|
|||
|
|
* Now use CEdge<> line variables rather than slower pointers.
|
|||
|
|
* Due to this, copied necessary code from parent class Initialize() and InitializeAsBaseEdge();
|
|||
|
|
* can't call parent's versions, because they have a different idea of what CEdge<LINE> looks
|
|||
|
|
* like.
|
|||
|
|
* Changed CZBufferInv parameter to CZBufferOff.
|
|||
|
|
*
|
|||
|
|
* 21 97/03/18 19:22 Speter
|
|||
|
|
* Replaced inefficient CDir3<>('z') with d3ZAxis.
|
|||
|
|
*
|
|||
|
|
* 20 97/02/20 8:15p Pkeet
|
|||
|
|
* Fixed bug found on an assert fail when loaded a curved bumpmapped object.
|
|||
|
|
*
|
|||
|
|
* 19 97/02/20 8:00p Pkeet
|
|||
|
|
* Added a specialized version of 'DrawSubtriangle.'
|
|||
|
|
*
|
|||
|
|
* 18 97/02/07 19:11 Speter
|
|||
|
|
* Replaced r3ObjToTexture with faster, better mx3ObjToTexture, propagated change.
|
|||
|
|
*
|
|||
|
|
* 17 1/29/97 12:17p Pkeet
|
|||
|
|
* Added code for using object space for bumpmap normals.
|
|||
|
|
*
|
|||
|
|
* 16 1/15/97 1:05p Pkeet
|
|||
|
|
* Removed the fog template parameter.
|
|||
|
|
*
|
|||
|
|
* 15 97/01/07 12:05 Speter
|
|||
|
|
* Updated for ptr_const.
|
|||
|
|
*
|
|||
|
|
* 14 96/12/31 17:06 Speter
|
|||
|
|
* Changed template parameter from raster to pixel type.
|
|||
|
|
* Updated for rptr.
|
|||
|
|
*
|
|||
|
|
* 13 12/16/96 7:52p Pkeet
|
|||
|
|
* Fixed bug.
|
|||
|
|
*
|
|||
|
|
* 12 12/16/96 6:43p Pkeet
|
|||
|
|
* Quick bumpmap fix.
|
|||
|
|
*
|
|||
|
|
* 11 12/06/96 5:14p Pkeet
|
|||
|
|
* Commented out seperate left and right drawing routines.
|
|||
|
|
*
|
|||
|
|
* 10 11/12/96 2:46p Pkeet
|
|||
|
|
* Added support for initializing self-modifying code on a per-triangle basis.
|
|||
|
|
*
|
|||
|
|
* 9 96/11/11 18:53 Speter
|
|||
|
|
* Updated for new CBumpAnglePair.SetBump() function.
|
|||
|
|
*
|
|||
|
|
* 8 10/14/96 11:46a Pkeet
|
|||
|
|
* Added a template parameter for the CMap template parameter.
|
|||
|
|
*
|
|||
|
|
* 7 10/09/96 7:32p Pkeet
|
|||
|
|
* Changed class to use the new 'CScanline' base class.
|
|||
|
|
*
|
|||
|
|
* 6 10/04/96 3:51p Pkeet
|
|||
|
|
* Added the CZBuffer class as a template parameter to CScanline.
|
|||
|
|
*
|
|||
|
|
* 5 10/03/96 6:18p Pkeet
|
|||
|
|
* Added the 'pdpixGetClut' member function.
|
|||
|
|
*
|
|||
|
|
* 4 10/02/96 4:40p Pkeet
|
|||
|
|
* Added the 'INDEX' template parameter. Added full template parameter list to 'CScanline.'
|
|||
|
|
*
|
|||
|
|
* 3 9/27/96 4:32p Pkeet
|
|||
|
|
* Removed the 'LineGouraudZ' template class.
|
|||
|
|
*
|
|||
|
|
* 2 96/09/27 11:31 Speter
|
|||
|
|
* Oops. Changed <float> in geometry types to <>.
|
|||
|
|
*
|
|||
|
|
* 1 9/18/96 2:45p Pkeet
|
|||
|
|
* Initial implementation.
|
|||
|
|
*
|
|||
|
|
**********************************************************************************************/
|
|||
|
|
|
|||
|
|
// Make sure this file is being included after 'FastBump.hpp.'
|
|||
|
|
#ifndef HEADER_LIB_RENDERER_PRIMITIVES_FASTBUMP_HPP
|
|||
|
|
#error The header file FastBump.hpp has not been included!
|
|||
|
|
#endif
|
|||
|
|
|
|||
|
|
#ifndef HEADER_LIB_RENDERER_PRIMITIVES_LINEBUMPMAKE_HPP
|
|||
|
|
#define HEADER_LIB_RENDERER_PRIMITIVES_LINEBUMPMAKE_HPP
|
|||
|
|
|
|||
|
|
#include "Lib/Renderer/Primitives/DrawTriangle.hpp"
|
|||
|
|
#include "Lib/Renderer/Primitives/Scanline.hpp"
|
|||
|
|
|
|||
|
|
|
|||
|
|
//
|
|||
|
|
// Static global variables.
|
|||
|
|
//
|
|||
|
|
|
|||
|
|
CVector3<> vec3DeltaX; // Vector increment for one step along the horizontal axis.
|
|||
|
|
|
|||
|
|
|
|||
|
|
//*****************************************************************************************
|
|||
|
|
//
|
|||
|
|
template<class PIXELFORMAT> void DrawLoopBumpMake
|
|||
|
|
(
|
|||
|
|
int i_pixel, // Offset into the destination raster.
|
|||
|
|
PIXELFORMAT* ptpix_screen, // Address of the first screen surface pixel.
|
|||
|
|
CVector3<> vec3 // Starting vector for interpolation.
|
|||
|
|
)
|
|||
|
|
//
|
|||
|
|
// Scanline draw function draws left to right or right to left depending on
|
|||
|
|
// i4ScanlineDirection. Version specific to bumpmap angle pairs.
|
|||
|
|
//
|
|||
|
|
// Notes:
|
|||
|
|
// This function is the inner scanline loop for the raster routine.
|
|||
|
|
//
|
|||
|
|
//**************************************
|
|||
|
|
{
|
|||
|
|
|
|||
|
|
//
|
|||
|
|
// Iterate left or right along the destination scanline depending on the sign of
|
|||
|
|
// 'i4ScanlineDirection.'
|
|||
|
|
//
|
|||
|
|
do
|
|||
|
|
{
|
|||
|
|
//
|
|||
|
|
// Do nothing if curvature already added. This allows multiple triangles to modify
|
|||
|
|
// an existing bumpmap without creating artifacts.
|
|||
|
|
//
|
|||
|
|
if (!ptpix_screen[i_pixel].bGetCurveFlag())
|
|||
|
|
{
|
|||
|
|
//
|
|||
|
|
// Get normals for the interpolated curve and the existing bumpmap normal.
|
|||
|
|
//
|
|||
|
|
CDir3<> dir3_curve(vec3);
|
|||
|
|
CDir3<> dir3_bump = ptpix_screen[i_pixel].dir3MakeNormal();
|
|||
|
|
|
|||
|
|
// Rotate the bumpmap normal by the interpolated curve's normal.
|
|||
|
|
dir3_bump = dir3_bump * CRotate3<>(d3ZAxis, dir3_curve);
|
|||
|
|
|
|||
|
|
// Reverse the transformation.
|
|||
|
|
dir3_bump *= CBumpMap::mx3Reverse;
|
|||
|
|
|
|||
|
|
// Store the combined curvature and bump.
|
|||
|
|
ptpix_screen[i_pixel].SetBump(dir3_bump);
|
|||
|
|
|
|||
|
|
// Mark this pixel as already having curvature.
|
|||
|
|
ptpix_screen[i_pixel].SetCurveFlag();
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// Increment vector and scanline count.
|
|||
|
|
vec3 += vec3DeltaX;
|
|||
|
|
i_pixel++;
|
|||
|
|
}
|
|||
|
|
while (i_pixel != 0);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
#endif // ifndef HEADER_LIB_RENDERER_PRIMITIVES_LINEBUMPMAKE_HPP
|