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JurassicParkTrespasser/jp2_pc/Source/Lib/Renderer/Primitives/DrawTriangle.hpp

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2018-01-01 22:07:24 +00:00
/***********************************************************************************************
*
* Copyright <EFBFBD> DreamWorks Interactive. 1996
*
* Contents:
* Triangle drawing function. The function is a template based on a scanline type.
*
* Bugs:
*
* To do:
* Add an 'Assert' function to ensure anti-clockwise triangle coordinates are received.
* Experiment with tables instead of the compound 'if' statements in the constructor.
* If shared edges are rejected, pass only the array of edges to 'RenderFromLeft' and
* 'RenderFromRight,' and lump functions only called by the constructor into the
* constructor. If shared edges are used, create a new constructor.
*
* Change the vertex parameter interpolation to work with half-open ranges. For example,
* when interpolating from a lighting value of 16.0 to 32.0, it should make the last pixel
* end up just below 32.0. Then we won't have to scale the parameter by numbers like
* LASTRANGE - 0.01.
*
* Notes:
* The base edge of the triangle is the edge along which the triangle scanline routine
* starts. For a triangle with one left edge and two right edges, it is quicker to
* calculate increments for, and scan along, the left edge -- the left edge is therefore
* the base edge.
*
* The algorithmic basis for the code implemented here and in reference modules can be
* found in "Graphics Gems Vol. III" under "Accurate Polygon Scan Conversion Using
* Half-Open Invervals" on page 362. The code is very dissimilar from the example code
* in that it uses a faster technique for edge-walking the triangles, and that it is
* objected-oriented and templated to work with various scanline types (e.g., flat,
* gouraud or linear texture-mapped).
*
***********************************************************************************************
*
* $Log:: /JP2_PC/Source/Lib/Renderer/Primitives/DrawTriangle.hpp $
*
* 113 98.09.19 12:39a Mmouni
* Added "forceinline" to many small inline functions.
* Inlined some functions for speed.
*
* 112 98.09.10 4:05p Mmouni
* Changed fMAX_NEG_AREA (-2*area where sub-triangle are dropped) to
* -0.2.
*
* 111 8/27/98 2:23p Rvande
* Changed to constants to floats.
*
* 110 8/25/98 3:07p Rvande
* qualified fixed as being in the global scope
*
* 109 98.08.19 7:40p Mmouni
* Now any polygon that has degenerate sub-triangles will be rendered by
* triangulation instead of using the trapezoid renderer.
*
* 108 98.07.17 6:36p Mmouni
* Added new alpha texture primitive.
*
* 107 98.06.28 4:53p Mmouni
* Moved pixel coverage stat calculation to before
* InitializePolygonsData to avoid MMX/FPU switching.
*
* 106 98.06.17 6:46p Mmouni
* Not counts pixels base on pre-calculated area.
*
* 105 98.06.12 3:36p Mmouni
* Added optimized versions of planar polygon gradient routines.
*
* 104 98.06.04 8:13p Mmouni
* Changed method used to compute the texture gradients across polygons
* with planar values to prevent weird shifting.
*
* 103 98.05.21 11:32p Mmouni
* Added check for valid texture co-ordinates to polygon drawing
* routine.
*
* 102 98.03.24 8:17p Mmouni
* Made changes to support alternate perspective correction settings.
*
* 101 3/05/98 3:38p Pkeet
* Added the 'bCAT_PIXEL_STAT' macro switch. Removed unused stats.
*
* 100 2/26/98 2:54p Mmouni
* Added call to done drawing polygon routine for use by the 3dx version
* of DrawTriangle.
*
* 99 98.01.22 3:14p Mmouni
* Removed bump-map depth conditional compilation.
*
* 98 1/19/98 7:34p Pkeet
* Added support for 16 bit bumpmaps.
*
* 97 1/15/98 7:03p Pkeet
* Added the polygon lock stat.
*
* 96 98.01.14 9:08p Mmouni
* Made changes for K6 3D polygon setup optimizations.
*
* 95 1/13/98 1:51p Pkeet
* Replaced the auxilary renderer switch with a screen lock.
*
* 94 1/12/98 11:45a Pkeet
* Added in the software lock request for the auxilary renderer.
*
* 93 97.11.25 7:02p Mmouni
* Finished Pentium/Pentium Pro triangle setup optimization.
*
* 92 97.11.14 11:58p Mmouni
* Removed mis-use of erfFILTER flag.
* Added specialized versions of InitializePolygonData for terrain
* texture.
*
* 91 97.11.11 9:50p Mmouni
* Added iBits to SGlobalRas structure.
*
* 90 97/11/08 3:41p Pkeet
* Removed Z template parameters and code.
*
* 89 97/10/30 7:05p Pkeet
* Added a threshold for using a triangle slope for the trapezoids.
*
* 88 97/10/28 13:23 Speter
* Restored previous SetMinAbs() code, which is needed for proper linear
* mapping with traps.
*
* 87 97.10.27 1:26p Mmouni
* Changed to make the pixel coverage stat work correctly.
*
* 86 97.10.15 7:39p Mmouni
* Added support for inline assembly for parts of CDrawPolygon.
*
* 85 97/10/12 20:34 Speter
* Removed fClutRampScale, as cvIntensity is now pre-scaled.
*
* 84 10/10/97 1:43p Mmouni
* All rendering is now left to right.
*
* 83 8/19/97 5:21p Bbell
* Increased the 'iMAX_RASTER_VERTICES' const.
*
* 82 97/08/07 11:35a Pkeet
* Added interface support for mipmapping.
*
* 81 97/08/05 11:33 Speter
* Added psDrawPolygonBegin stat.
*
* 80 97/07/28 11:16a Pkeet
* Uses the 'erfDRAW_CLIP' to set the constant colour to 0 after polygon
* data has been set.
*
* 79 97/07/23 18:00 Speter
* Added psDrawPolygonSolid stat.
*
* 78 97/07/18 3:29p Pkeet
* Removed use of the 'b_right' parameter from DrawSubTriangle.
*
* 77 97/07/16 15:59 Speter
* Fixed some bugs in trapezoid renderer, and now use trapezoids for
* non-planar polygons as well. Added InitGradientData() to calculate
* gradients for trapezoids. InitializeTriangleData now takes two
* params to use as coefficients in derivative calculation rather than
* f_invdx; also takes b_update parameter to use for multiple-triangle
* gradient calculations. Added AssertXRange function to test the
* validity of a single scanline. Added iNumRasterVertices global.
* Added additional DrawPolygon sub-stats. Removed unneeded fInvDX
* member variable.
*
* 76 97/07/07 14:02 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.
*
* 75 97/06/27 15:22 Speter
* Now renders trapezoids when able to. Added DrawTrapezoids,
* InitTriangleData, InitializeTopVertex. Re-ordered code to allow for
* multiple base-edges per polygon. Call new
* LINE::InitializePolygonData function. Moved calls to
* SetNumIntensities() and fClutRampScale to Gouraud templates. Updated
* primitive stats (disabled) for trapezoids. Removed
* CalculateTrapStats().
*
* 74 97/06/25 1:14p Pkeet
* Includes code for displaying depth sort clipping.
*
* 73 97/06/24 4:22p Pkeet
* Made array of edges static to eliminate unnecessary constructor
* calls.
*
* 72 6/19/97 2:53p Mlange
* Moved Profile.hpp to Lib/Sys.
*
* 71 97/06/17 2:03p Pkeet
* Removed the reference counting pointer from prasScreen.
*
* 70 97/06/15 17:27 Speter
* Put trapezoid stat code inside bPRIM_STATS compile flag.
*
* 69 97/06/14 6:46p Pkeet
* Fixed compile bug.
*
* 68 6/15/97 1:43a Bbell
* Fixed final mode build problem.
*
* 67 6/15/97 1:31a Bbell
* Removed unnecessary include.
*
* 66 97/06/13 7:31p Pkeet
* Added CDrawPolygonBase and a global raster structure.
*
* 65 97/06/12 15:29 Speter
* CalculateTrapStats is now iffed out.
*
* 64 97/06/10 15:39 Speter
* Removed iY calculation from CDrawPolygon. Now done in pipeline.
*
* 63 97/06/06 17:15 Speter
* Fixes for Final mode (timing stats).
*
* 62 97/06/05 17:02 Speter
* Updated for stats.
*
* 61 97/06/04 6:45p Pkeet
* Moved the profile stats here.
*
* 60 97/06/03 18:50 Speter
* Added #include FixedP.hpp. Moved polygon stats here from
* Profile.cpp, added perspective stats.
*
* 59 97/06/02 13:52 Speter
* Added primitive element stats for both triangles and trapezoids.
*
* 58 97/05/26 2:19p Pkeet
* Optimal calculation of the integer Y position.
*
* 57 97/05/25 18:04 Speter
* Changed CDrawTriangle to CDrawPolygon, which calls member
* DrawTriangle. Added faster triangulisation.
*
* 56 97/05/23 17:52 Speter
* Added CDrawPolygon<> template, which should be used by all rather
* than CDrawTriangle<>. For now CDrawPolygon<> invokes
* CDrawTriangle<>. The latter now takes vertex and texture arguments
* directly, rather than via SRenderTriangle. Removed
* CRenderPolygon::fScreenArea param, now calculate fInvDx directly.
*
* 55 5/06/97 5:07p Cwalla
* Stoped fixed point overloading.
*
* 54 97-03-31 22:19 Speter
* Adjust fInvDx calculation for actual screen area.
* Now use CEdge<> line variables rather than slower pointers.
* Moved timing calls to DrawSubtriangle.hpp.
*
* 53 97/02/20 7:19p Pkeet
* Removed the vertical scanline loop from the 'RenderFromLeft' and
* 'RenderFromRight' member functions in favour of a function call to a
* DrawSubtriangle function. Added the necessary includes and changes to
* use the new DrawSubtriangle function. Removed the '++' member
* function as the code has been moved to the DrawSubtriangle function.
*
* 52 97/02/19 11:08 Speter
* Corrected sign of pixel stat.
*
* 51 97/02/07 7:44p Pkeet
* Removed the 'bValidateHandedness' and 'bSetParialDerivativeRelX' functions in favour of using
* the pre-calculated area of the triangle.
*
* 50 97/01/26 19:54 Speter
* Changed valid handedness test to not assert.
* Moved scanline timing calls from outside scanline call to outside of sub-triangle loop.
*
* 49 97/01/16 11:54 Speter
* Updated for CProfile changes.
*
* 48 1/15/97 1:03p Pkeet
* Removed fog template parameters.
*
* 47 1/08/97 7:42p Pkeet
* Added an include for CEdge. Removed extraneous scope information from the CDrawTriangle
* constructor.
*
* 46 97/01/07 12:04 Speter
* Updated for rptr_const.
*
* 45 96/12/31 16:58 Speter
* Updated for rptr.
*
* 44 96/12/17 19:23 Speter
* Removed psDrawTriangle stat (subsumed in psDrawTriangles).
*
* 43 96/12/17 13:19 Speter
* Moved extern fClutRampScale declaration here from DrawTriangle.hpp.
* Moved includes to bottom of file for now, since they contain code.
*
*
* 42 96/12/09 16:18 Speter
* Updated for new CProfile members.
*
* 41 96/12/06 17:58 Speter
* Changed profile to use new CCycleTimer class and Add() function.
*
* 40 12/06/96 5:14p Pkeet
* Commented out seperate left and right drawing routines.
*
* 39 12/06/96 3:51p Pkeet
* Added the bModified global flag.
*
* 38 96/12/05 16:48 Speter
* Removed #ifdef on profile calls.
*
* 37 12/05/96 1:17p Pkeet
* Added profiling from the Profile.hpp module.
*
* 36 11/12/96 2:46p Pkeet
* Added support for initializing self-modifying code on a per-triangle basis.
*
* 35 10/11/96 10:31a Pkeet
* Added 'pvClutConversion' as a global variable instead of a member of 'CDrawTriangle.' No clut
* pointer is therefore passed to the 'DrawLoop' functions.
*
* 34 10/10/96 8:20p Pkeet
* Moved extern out of this module.
*
* 33 10/10/96 7:58p Pkeet
* Made statically declared variables externally declared variables.
*
* 32 10/09/96 7:44p Pkeet
* Changed the 'LineFlatZ.hpp' include to the 'Scanline.hpp' include. Changed references from
* 'CLineFlatZ' to 'CScanline.' Removed the 'pixPixel' and 'ptexTexture' global variables. Moved
* the 'iDefaultFog' global to the fog template module. Removed the 'fSCALE_ADJUST' const. Added
* the 'pdpixClut' and 'ptexTexture' member variables.
*
* 31 96/10/08 19:26 Speter
* Added stats for scanline timing and number of pixels drawn.
*
* 30 96/10/04 18:39 Speter
* Added necessary include.
*
* 29 96/10/04 18:02 Speter
* Removed defunct ObjDef2D.hpp include. Added RenderDefs.hpp.
*
* 28 10/04/96 3:51p Pkeet
* Added the CZBuffer class as a template parameter to CLineFlatZ.
*
* 27 10/03/96 6:17p Pkeet
* Removed pvClutTable in favour of a member variable of the triangle.
*
* 26 10/03/96 3:14p Pkeet
* Removed constants and global variables associated with Gouraud shading. Removed extraneous
* includes. Added includes removed from 'ScreenRenderDWI.cpp.'
*
* 25 9/27/96 4:32p Pkeet
* Removed the 'LineGouraudZ' template class.
*
* 24 9/24/96 2:53p Pkeet
* Calculates a 'fClutRampScale' value from the number of ramp values in a clut only when a clut
* is present, otherwise uses the default value. The test for a valid Z-buffer present was moved
* from this primitive to the 'ScreenRenderDWI' module.
*
* 23 8/21/96 4:44p Pkeet
* Moved 'pixPixel.'
*
* 22 8/20/96 4:47p Pkeet
* Added the 'iDefaultFog' variable.
*
* 21 96/08/09 11:05 Speter
* Changed zbuffer from CRasterMemT<int32> to simple CRaster, because with D3D, z buffer might
* be different depth.
*
* 20 7/31/96 12:38p Pkeet
* Added 'fGouraudTolerance' constant.
*
* 19 7/29/96 2:15p Pkeet
* Made the 'SRenderCoord' struct non-const.
*
* 18 96/07/26 18:22 Speter
* Changed scaling of vertex parameters again. Now all increments are scaled by parameter size,
* actual values are scaled by parameter size minus one, and 0.5 is added.
*
* 17 96/07/26 10:53 Speter
* Added fSCALE_ADJUST parameter for vertex parameter scaling adjustment. A value of 1.0 for
* this prevents crashes, but we must still determine the reallly correct way of scaling.
*
* 16 96/07/24 14:54 Speter
* Added fClutRampScale global variable, and some comments.
*
* 15 96/07/22 15:24 Speter
* Moved pixSolid global variable to LineFlatZ.hpp.
*
* 14 7/18/96 5:43p Pkeet
* Changed iY asserts to match height range.
*
* 13 96/07/18 17:18 Speter
* Changes affecting zillions of files:
* Changed SRenderCoord to SRenderVertex.
* Added SRenderTriangle type, changed drawing primitives to accept it.
*
* 12 7/17/96 12:06p Pkeet
* Moved the drawing primitives up by 1 so that they clip correctly.
*
* 11 96/07/16 13:14 Speter
* Changed iPixelSolid to pixSolid.
*
* 10 96/07/15 18:58 Speter
* Changed u4_data param to CTexture*.
* Added static globals: ptexTexture, pvClutTable, pixPixel.
*
* 9 7/09/96 3:22p Pkeet
* Moved 'i4DInvZ' to LineFlatZ.hpp.
*
* 8 7/08/96 3:28p Pkeet
* Moved 'i4DInvZ.'
*
* 7 6/25/96 2:31p Pkeet
* Made 'u4Data' a global variable instead of a member variable of 'CDrawTriangle.'
*
* 6 6/17/96 6:42p Pkeet
* Added 'iFastPosFloatToInt' use.
*
* 5 6/13/96 8:31p Pkeet
* Eliminated fast float to int conversions for now.
*
* 4 6/13/96 3:23p Pkeet
* Added comments.
*
* 3 6/13/96 3:08p Pkeet
* Changed 'CDrawTriangle' prefix. Added to the 'to do' list. Added asserts. Added references to
* texts.
*
* 2 6/06/96 7:57p Pkeet
* Changed calls to 'DrawFromLeft' and 'DrawFromRight' to reflect their new status as template
* functions as opposed to member functions.
*
* 1 6/06/96 5:38p Pkeet
* Initial implementation. 'CDrawTriangle' now combines aspects of the old 'CPoly' object with
* the draw functions added as member functions.
*
**********************************************************************************************/
#ifndef HEADER_RENDERER_PRIMITIVES_DRAWTRIANGLE_HPP
#define HEADER_RENDERER_PRIMITIVES_DRAWTRIANGLE_HPP
//
// Necessary includes for triangle drawing.
//
#include "Lib/Sys/Profile.hpp"
#include "Lib/Renderer/ScreenRender.hpp"
#include "Lib/View/Raster.hpp"
#include "Lib/Types/FixedP.hpp"
#include "Edge.hpp"
#define bPRIM_STATS (0)
#define bPOLY_STATS (0)
#define bPIXEL_COVERAGE_STAT (1)
#define bCAT_PIXEL_STAT (0)
#define bLOCK_STAT (1)
//
// Global constants & variables.
//
const int iMAX_RASTER_VERTICES = 64;
const float fMAX_NEG_AREA = -0.2;
extern SRenderVertex arvRasterVertices[iMAX_RASTER_VERTICES];
extern int iNumRasterVertices;
extern bool bModified;
extern int iDefaultFog;
// Stats, relative to proProfile.psDrawPolygon.
extern CProfileStat psDrawPolygonInit;
extern CProfileStat psDrawPolygonBump;
#if bLOCK_STAT
extern CProfileStat psDrawPolygonLock;
#endif
#if bPOLY_STATS
extern CProfileStat psDrawPolygonBegin;
extern CProfileStat psDrawPolygonData;
extern CProfileStat psDrawPolygonEdges;
extern CProfileStat psDrawPolygonWalk;
#endif
extern CProfileStatParent psPixels;
#if bCAT_PIXEL_STAT
extern CProfileStat psPixelsPerspective;
extern CProfileStat psPixelsC;
#endif
#if bPRIM_STATS
extern CProfileStat psSubpolygons;
extern CProfileStat psTrapezoids;
extern CProfileStat psBaseEdges;
extern CProfileStat psEdges;
extern CProfileStat psLines;
#endif
//
// Forward declarations of classes and functions.
//
//*********************************************************************************************
template <class TPIX, class GOUR, class TRANS, class MAP, class INDEX, class CLU>
class CScanline;
//*********************************************************************************************
template<class LINE> class CDrawPolygon;
//*****************************************************************************************
template<class LINE> void DrawSubtriangle(LINE* pscan, CDrawPolygon<LINE>* pdtriTriangle);
//
// Global templated helper functions used in CDrawPolygon.
//
template <class LINE> void InitializePolygonData(LINE& lineData, CRenderPolygon* rpoly);
template <class LINE> void InitializeEdge(CEdge<LINE>& edge, SRenderVertex* prv_from, SRenderVertex* prv_to);
template <class LINE> bool bInitTriangleDataEx(CDrawPolygon<LINE>* poly, SRenderVertex* prv_a,
SRenderVertex* prv_b, SRenderVertex* prv_c, bool b_update);
template <class LINE> bool bInitGradientDataPlanarEx(CDrawPolygon<LINE>* poly);
template <class LINE> void InitializeForWalkEx(CDrawPolygon<LINE>* poly, CEdge<LINE>* pedge);
template <class LINE> void DoneDrawingPolygon(CDrawPolygon<LINE>* poly);
//
// Global functions.
//
//*********************************************************************************************
inline int iPrev
(
int i
)
{
return i > 0 ? i-1 : iNumRasterVertices - 1;
}
//*********************************************************************************************
inline int iNext
(
int i
)
{
i++;
return i < iNumRasterVertices ? i : 0;
}
//*********************************************************************************************
//
template<class T> inline void SetMinAbs
(
T& t_a, // Variable to set.
T t_b // Value to compare with.
)
//
// Set t_a to t_b if the absolute value of t_b is less than t_a.
//
//**************************************
{
// if (Abs(t_b) < Abs(t_a))
// t_a = t_b;
if (t_a >= 0)
{
if (t_b < 0)
t_a = 0;
else
SetMin(t_a, t_b);
}
else
{
if (t_b > 0)
t_a = 0;
else
SetMax(t_a, t_b);
}
}
//*********************************************************************************************
//
template<class T> inline void SetMaxAbs
(
T& t_a, // Variable to set.
T t_b // Value to compare with.
)
//
// Set t_a to t_b if the absolute value of t_b is greater than t_a.
//
//**************************************
{
if (Abs(t_b) > Abs(t_a))
t_a = t_b;
}
//
// Structure Definitions.
//
//*********************************************************************************************
//
struct SGlobalRas
//
// A global raster description for use by subtriangle asm blocks.
//
// Prefix: gs
//
//**************************************
{
void* pvScreen; // Screen buffer.
uint32 u4LinePixels; // Screen buffer stride.
int iBits; // Bits per pixel (15 or 16).
};
// Global structure.
extern SGlobalRas gsGlobals;
//
// Class definitions.
//
//*********************************************************************************************
//
class CDrawPolygonBase
//
// Describes a polygon rasterizing structure that is independant of template types.
//
// Prefix: polybase
//
//**************************************
{
public:
// Force default constructor inline so it is not called.
forceinline CDrawPolygonBase()
{
}
int iY; // Current scanline being rasterized.
int iYTo; // Last scanline to be rasterized along the current
// pair of left and right edges.
int iLineStartIndex; // Index to the first pixel in the current horizontal line.
::fixed fxLineLength; // Length of the current scanline.
::fixed fxDeltaLineLength; // Increment of the length of the scanline for the current
// pair of left and right edges.
};
//*********************************************************************************************
//
template<class LINE> class CDrawPolygon : public CDrawPolygonBase
//
// Describes triangle rasterizing data based on a scanline type. Sets up the basic information
// of the plane, and performs plane data lineIncrements per scanline.
//
// Prefix: tri
//
//**************************************
{
public:
CRaster* prasScreen; // Pointer to the main screen raster.
ptr_const<CTexture> ptexTexture; // Pointer to the source texture.
LINE lineData; // Storage for triangle-wide data based on the
// scanline type.
CEdge<LINE>* pedgeBase; // Base edge.
CRenderPolygon* prpolyPoly; // Render polygon.
public:
//*****************************************************************************************
//
// CDrawPolygon constructors.
//
//*****************************************************************************************
//
CDrawPolygon
(
CRaster* pras_screen, // Address of the screen buffer.
CRenderPolygon& rpoly // Info on polygon to render.
)
//
// Draws a polygon by splitting into triangles and calling DrawTriangle.
//
// Notes:
// This class assumes that:
//
// * The polygon coordinates are provided in an anti-clockwise direction.
//
// * 0.5 has been added to the x and y values of the screen coordinates to cause
// pixels to be lit according to their centres as opposed to their top left
// corners.
//
//**************************************
{
CCycleTimer ctmr;
#if (VER_DEBUG)
rpoly.Validate();
#endif
//
// Copy data to CDrawPolygon member variables.
//
bModified = false;
prpolyPoly = &rpoly;
Assert(pras_screen);
prasScreen = pras_screen;
ptexTexture = rpoly.ptexTexture;
#if bPIXEL_COVERAGE_STAT
// Add timing information. Area = -0.5 * dx.
int iArea = iRound(rpoly.fArea);
psPixels.Add(0, iArea);
#if bCAT_PIXEL_STAT
if (LINE::TIndex::bIsPerspective())
psPixelsPerspective.Add(0, iArea);
#endif
#endif
InitializePolygonData(lineData, &rpoly);
//
// Test to see if the polygon is supposed to render black only. If it is, changed
// the flat colour to black.
//
if (rpoly.seterfFace[erfDRAW_CLIP])
{
u4ConstColour = 0;
}
iNumRasterVertices = rpoly.paprvPolyVertices.uLen;
#if bPOLY_STATS
psDrawPolygonBegin.Add(ctmr(), 1);
#endif
if (iNumRasterVertices <= 3)
{
// Render the triangle.
DrawTriangle
(
&arvRasterVertices[0],
&arvRasterVertices[1],
&arvRasterVertices[2]
);
}
else
{
//
// Subdivide the polygon.
//
// Check menu setting before enabling trapezoidalisation.
if (rpoly.seterfFace[erfTRAPEZOIDS])
{
DrawTrapezoids();
}
else
{
DrawTriangulated();
}
}
DoneDrawingPolygon(this);
}
//*****************************************************************************************
//
bool bInitTriangleData
(
SRenderVertex* prv_a, // 3 vertices making up this triangle.
SRenderVertex* prv_b,
SRenderVertex* prv_c,
bool b_update = false
)
//
// Sets up triangle-wide rasterising info.
//
// Returns:
// Whether the triangle is large enough to render.
//
//**************************************
{
Assert(prv_a);
Assert(prv_b);
Assert(prv_c);
//
// Calculate fInvDx, the partial derivative of x over the triangle, using the following
// formula:
//
// 1 1
// fInvDx = ---- = ---------------------------------------
// dx (x2 - x1)(y3 - y1) - (x3 - x1)(y2 - y1)
//
// dx also happens to be -2 times the area of the triangle, so we can check for correct
// orientation here as well.
//
float f_yab = (prv_b->v3Screen.tY - prv_a->v3Screen.tY);
float f_yac = (prv_c->v3Screen.tY - prv_a->v3Screen.tY);
float f_dx = (prv_b->v3Screen.tX - prv_a->v3Screen.tX) * f_yac -
(prv_c->v3Screen.tX - prv_a->v3Screen.tX) * f_yab;
if (f_dx >= fMAX_NEG_AREA)
return false;
// Calculate coefficients to pass to template InitializeTriangleData functions.
float f_invdx = 1.0f / f_dx;
float f_yab_invdx = f_yab * f_invdx;
float f_yac_invdx = f_yac * f_invdx;
// Calculate triangle data for the line type.
lineData.InitializeTriangleData(prv_a, prv_b, prv_c, f_yab_invdx, f_yac_invdx, ptexTexture, b_update, prpolyPoly->seterfFace[erfSOURCE_TERRAIN]);
return true;
}
//*****************************************************************************************
//
bool bInitGradientDataPlanar
(
)
//
// Sets up polygon-wide rasterising info.
//
// Returns:
// Whether the polygon is large enough to render.
//
//**************************************
{
SRenderVertex *prv_a = &arvRasterVertices[iNumRasterVertices-2];
SRenderVertex *prv_b = &arvRasterVertices[iNumRasterVertices-1];
SRenderVertex *prv_c = &arvRasterVertices[0];
SRenderVertex *prv_a_min = prv_a;
SRenderVertex *prv_b_min = prv_b;
SRenderVertex *prv_c_min = prv_c;
//
// Find the first edge pair with an area greater than 25 pixels, or if no
// edge pair has an area greater than 25 pixels find the maximum.
//
float f_yab_min = (prv_b->v3Screen.tY - prv_a->v3Screen.tY);
float f_yac_min = (prv_c->v3Screen.tY - prv_a->v3Screen.tY);
float f_dx_min = (prv_b->v3Screen.tX - prv_a->v3Screen.tX) * f_yac_min -
(prv_c->v3Screen.tX - prv_a->v3Screen.tX) * f_yab_min;
for (int i = 1; i < iNumRasterVertices && f_dx_min > -50.0f; i++)
{
prv_a = prv_b;
prv_b = prv_c;
prv_c = &arvRasterVertices[i];
float f_yab = (prv_b->v3Screen.tY - prv_a->v3Screen.tY);
float f_yac = (prv_c->v3Screen.tY - prv_a->v3Screen.tY);
float f_dx = (prv_b->v3Screen.tX - prv_a->v3Screen.tX) * f_yac -
(prv_c->v3Screen.tX - prv_a->v3Screen.tX) * f_yab;
if (f_dx < f_dx_min)
{
f_yab_min = f_yab;
f_yac_min = f_yac;
f_dx_min = f_dx;
prv_a_min = prv_a;
prv_b_min = prv_b;
prv_c_min = prv_c;
}
}
// Is the polygon too small to draw?
if (f_dx_min >= fMAX_NEG_AREA)
return false;
#if bPIXEL_COVERAGE_STAT
// Add timing information. Area = -0.5 * dx.
psPixels.Add(0, iRound(f_dx_min * -0.5f));
#if bCAT_PIXEL_STAT
if (LINE::TIndex::bIsPerspective())
psPixelsPerspective.Add(0, iRound(f_dx_min * -0.5f));
#endif
#endif
// Calculate coefficients to pass to template InitializeTriangleData functions.
float f_invdx = 1.0f / f_dx_min;
float f_yab_invdx = f_yab_min * f_invdx;
float f_yac_invdx = f_yac_min * f_invdx;
// Calculate triangle data for the line type.
lineData.InitializeTriangleData(prv_a, prv_b, prv_c, f_yab_invdx, f_yac_invdx, ptexTexture, 0, prpolyPoly->seterfFace[erfSOURCE_TERRAIN]);
return true;
}
protected:
//*****************************************************************************************
//
// CDrawPolygon member functions.
//
//*****************************************************************************************
//
void DrawTriangle
(
SRenderVertex* prv_a, // 3 vertices making up this triangle.
SRenderVertex* prv_b,
SRenderVertex* prv_c
)
//
// Draws a triangle by building edges and scanning through those edges either left-to-right
// or right-to-left. The direction of the scanning depends on which way the triangle points
// along the horizontal screen axis.
//
//**************************************
{
CCycleTimer ctmr;
int dir;
#if bPRIM_STATS
psSubpolygons.Add(0, 1);
#endif
//
// Determine where to start walking the edges of the triangle, and the base edge of the
// triangle. There are only six basic patterns for walking the edges of an
// anti-clockwise triangle. Where 'a', 'b' and 'c' represent the vertices of a triangle,
// 'ab', 'bc' and 'ca' represent the edges of a triangle and where 'L' stands for left
// and 'R' stands for right, the decision tree for walking the triangle this is:
//
// ab is
// /\
// L / \ R
// / \
// ---------------- ----------------
// | |
// bc is bc is
// /\ /\
// L / \ R L / \ R
// / \ / \
// ------- --- --- -------
// | L | R | | | | L | R |
// | ab| ca| ca is ca is | ca| bc|
// | bc| | /\ /\ | | ab|
// ------- L / \ R L / \ R -------
// / \ / \
// ------- ------- ------- -------
// | L | R | | L | R | | L | R | | L | R |
// | ca| bc| | ab| ca| | bc| ab| | bc| ab|
// | ab| | | | bc| | ca| | | | ca|
// ------- ------- ------- -------
//
// The order of edge walking will be set to this tree, and the i4ScanlineDirection
// variable will be set to 1 if the triangle is rasterized from the left to right,
// otherwise it will be set to -1. If an edge doesn't cross a horizontal scanline,
// it is assumed to be a right edge.
//
CEdge<LINE> pedge[3]; // Edge list.
// If ab is left:
if (prv_a->iYScr < prv_b->iYScr)
{
// If bc is left:
if (prv_b->iYScr < prv_c->iYScr)
{
dir = -1;
InitializeEdge(pedge[0], prv_a, prv_b);
InitializeEdge(pedge[1], prv_b, prv_c);
InitializeEdge(pedge[2], prv_a, prv_c);
}
else
{
// If ca is left:
if (prv_c->iYScr < prv_a->iYScr)
{
dir = -1;
InitializeEdge(pedge[0], prv_c, prv_a);
InitializeEdge(pedge[1], prv_a, prv_b);
InitializeEdge(pedge[2], prv_c, prv_b);
}
else
{
dir = 1;
InitializeEdge(pedge[0], prv_a, prv_b);
InitializeEdge(pedge[1], prv_a, prv_c);
InitializeEdge(pedge[2], prv_c, prv_b);
}
}
}
else
{
// If bc is left:
if (prv_b->iYScr < prv_c->iYScr)
{
// If ca is left:
if (prv_c->iYScr < prv_a->iYScr)
{
dir = -1;
InitializeEdge(pedge[0], prv_b, prv_c);
InitializeEdge(pedge[1], prv_c, prv_a);
InitializeEdge(pedge[2], prv_b, prv_a);
}
else
{
dir = 1;
InitializeEdge(pedge[0], prv_b, prv_c);
InitializeEdge(pedge[1], prv_b, prv_a);
InitializeEdge(pedge[2], prv_a, prv_c);
}
}
else
{
// bc is right.
dir = 1;
InitializeEdge(pedge[0], prv_c, prv_a);
InitializeEdge(pedge[1], prv_c, prv_b);
InitializeEdge(pedge[2], prv_b, prv_a);
}
}
// Always render left-to-right.
i4ScanlineDirection = 1;
#if bPOLY_STATS
psDrawPolygonEdges.Add(ctmr(), 1);
#endif
if (!bInitTriangleDataEx(this, prv_a, prv_b, prv_c, false))
return;
#if bPOLY_STATS
psDrawPolygonData.Add(ctmr(), 1);
#endif
#if bPRIM_STATS
psEdges.Add(0, 3);
#endif
//
// Walk along left or right edges depending on which is faster.
//
if (dir > 0)
{
RenderFromLeft(&pedge[0], &pedge[1], &pedge[2]);
}
else
{
RenderFromRight(&pedge[0], &pedge[1], &pedge[2]);
}
}
//*****************************************************************************************
//
void DrawTriangulated()
//
// Draws a polygon by subdividing into triangles and then dividing the triangles into
// sub-trapezoids.
//
//**************************************
{
// Find top point.
int i_ymin = iTopIndex();
// Render the top triangle.
int i_a = iPrev(i_ymin);
int i_b = i_ymin;
int i_c = iNext(i_ymin);
//
// From here, proceed to triangulate downwards.
//
int i_aa = iPrev(i_a);
int i_cc = iNext(i_c);
for (;;)
{
DrawTriangle
(
&arvRasterVertices[i_a],
&arvRasterVertices[i_b],
&arvRasterVertices[i_c]
);
if (i_aa == i_cc)
{
// Bottom triangle.
DrawTriangle
(
&arvRasterVertices[i_a],
&arvRasterVertices[i_c],
&arvRasterVertices[i_cc]
);
break;
}
// Advance to next lowest vertex.
if (arvRasterVertices[i_aa].iYScr < arvRasterVertices[i_cc].iYScr)
{
i_b = i_a;
i_a = i_aa;
i_aa = iPrev(i_a);
}
else
{
i_b = i_c;
i_c = i_cc;
i_cc = iNext(i_c);
}
}
}
//*****************************************************************************************
//
bool bInitGradientData
(
int i_left1, // Top vertices of polygon.
int i_right1,
bool& b_bad_subtriangles // Set to true if any sub-triangles are too small to render.
)
//
//**************************************
{
//
// Iteratate all the trapezoids, finding optimal gradients.
//
bool b_update;
bool b_good;
// Find next coordinates.
int i_left2 = iNext(i_left1);
int i_right2 = iPrev(i_right1);
// Initialise gradients based on top trapezoid.
b_good = bInitTriangleDataEx
(
this,
&arvRasterVertices[i_left1],
&arvRasterVertices[i_left2],
&arvRasterVertices[i_right2],
false
);
b_update = b_good;
b_bad_subtriangles = !b_good;
if (i_left1 != i_right1 && i_left2 != i_right2)
{
// The top is a trapezoid; update from bottom right triangle.
b_good = bInitTriangleDataEx
(
this,
&arvRasterVertices[i_left1],
&arvRasterVertices[i_right2],
&arvRasterVertices[i_right1],
b_update
);
b_update |= b_good;
b_bad_subtriangles |= !b_good;
}
// Iterate through remaining trapezoids.
for (;;)
{
if (i_left2 == i_right2)
// We just did bottom triangle.
break;
int i_diff = arvRasterVertices[i_left2].iYScr - arvRasterVertices[i_right2].iYScr;
if (i_diff <= 0)
{
// New left vertex and edge.
i_left1 = i_left2;
i_left2 = iNext(i_left2);
if (i_diff == 0 && i_left2 == i_right2)
// We just hit bottom trap.
break;
// Update for new left.
if (i_left2 != i_right2)
{
b_good = bInitTriangleDataEx
(
this,
&arvRasterVertices[i_left2],
&arvRasterVertices[i_right2],
&arvRasterVertices[i_left1],
b_update
);
b_update |= b_good;
b_bad_subtriangles |= !b_good;
}
}
if (i_diff >= 0)
{
// New right vertex and edge.
i_right1 = i_right2;
i_right2 = iPrev(i_right2);
// Update for new right.
if (i_left2 != i_right2)
{
b_good = bInitTriangleDataEx
(
this,
&arvRasterVertices[i_left2],
&arvRasterVertices[i_right2],
&arvRasterVertices[i_right1],
b_update
);
b_update |= b_good;
b_bad_subtriangles |= !b_good;
}
}
}
return b_update;
}
//*****************************************************************************************
//
void DrawTrapezoids()
//
// Draws a polygon by subdividing into trapezoids, and building edges as necessary.
// Each trapezoid is always rendered left-to-right.
//
//**************************************
{
CCycleTimer ctmr;
#if bPRIM_STATS
psSubpolygons.Add(0, 1);
#endif
// Find top trapezoid.
int i_right1 = iTopIndex();
// May not be unique top point; check adjacent points for same scanline.
int i_left1 = iNext(i_right1);
if (arvRasterVertices[i_left1].iYScr > arvRasterVertices[i_right1].iYScr)
{
i_left1 = i_right1;
// Try previous vertex.
i_right1 = iPrev(i_left1);
if (arvRasterVertices[i_right1].iYScr > arvRasterVertices[i_left1].iYScr)
// Pointy top.
i_right1 = i_left1;
}
if (LINE::bIsPlanar())
{
// Find gradients.
if (!bInitGradientDataPlanarEx(this))
return;
}
else
{
// Find gradients.
bool b_bad_subtriangles = false;
if (!bInitGradientData(i_left1, i_right1, b_bad_subtriangles))
return;
// If one or more sub-triangles were bad, don't use the trapezoid renderer.
if (b_bad_subtriangles)
{
DrawTriangulated();
return;
}
}
#if bPOLY_STATS
psDrawPolygonData.Add(ctmr(), 1);
#endif
// Always render left-to-right.
i4ScanlineDirection = 1;
// The two edge structures re-used throughout this polygon.
CEdge<LINE> edge_left, edge_right;
int i_left2 = iNext(i_left1);
int i_right2 = iPrev(i_right1);
// Initialise the first two edges.
InitializeEdge(edge_left, &arvRasterVertices[i_left1], &arvRasterVertices[i_left2]);
InitializeEdge(edge_right, &arvRasterVertices[i_right1], &arvRasterVertices[i_right2]);
#if bPRIM_STATS
psEdges.Add(0, 2);
#endif
fxLineLength = edge_right.lineStart.fxX - edge_left.lineStart.fxX;
InitializeTopVertex(edge_left.prvFrom);
InitializeForWalkEx(this, &edge_left);
#if bPOLY_STATS
psDrawPolygonEdges.Add(ctmr(), 1);
#endif
#if bLOCK_STAT
{
CCycleTimer ctmr_lock;
prasScreen->Lock();
psDrawPolygonLock.Add(ctmr_lock(), 1);
}
#else
// Lock the surface for renderering.
prasScreen->Lock();
#endif
// Render this and subsequent trapezoids.
for (;;)
{
//
// Render the current trapezoid.
//
// Find the bottom of the current trapezoid.
iYTo = Min(edge_left.prvTo->iYScr, edge_right.prvTo->iYScr);
if (iY < iYTo)
{
#if bPRIM_STATS
psTrapezoids.Add(0, 1);
#endif
fxDeltaLineLength = edge_right.lineIncrement.fxX - edge_left.lineIncrement.fxX;
edge_left.lineStart.AssertXRange(fxLineLength);
#if bPOLY_STATS
psDrawPolygonWalk.Add(ctmr(), 1);
#endif
DrawSubtriangle(&edge_left.lineStart, this);
psPixels.Add(ctmr());
}
if (i_left2 == i_right2)
// We just did bottom triangle.
break;
int i_diff = edge_left.prvTo->iYScr - edge_right.prvTo->iYScr;
if (i_diff <= 0)
{
// New left vertex and edge.
i_left1 = i_left2;
i_left2 = iNext(i_left2);
if (i_diff == 0 && i_left2 == i_right2)
// We just hit bottom trap.
break;
// Update line length for more accuracy, adjusting by the difference between the
// accumulated X of the left edge, and the exact X of the new left vertex.
fxLineLength += edge_left.lineStart.fxX;
InitializeEdge(edge_left, &arvRasterVertices[i_left1], &arvRasterVertices[i_left2]);
#if bPRIM_STATS
psEdges.Add(0, 1);
#endif
InitializeForWalkEx(this, &edge_left);
fxLineLength -= edge_left.lineStart.fxX;
}
if (i_diff >= 0)
{
// New right vertex and edge.
i_right1 = i_right2;
i_right2 = iPrev(i_right2);
InitializeEdge(edge_right, &arvRasterVertices[i_right1], &arvRasterVertices[i_right2]);
#if bPRIM_STATS
psEdges.Add(0, 1);
#endif
// Update line length for more accuracy, using exact X of new right vertex,
// and accumulated X of left edge.
fxLineLength = edge_right.lineStart.fxX - edge_left.lineStart.fxX;
}
}
#if bPOLY_STATS
psDrawPolygonWalk.Add(ctmr(), 1);
#endif
}
//*****************************************************************************************
//
forceinline int iTopIndex()
//
// Returns:
// The index of the topmost (lowest Y) vertex.
//
//**********************************
{
// Find top point.
int i_ymin = 0;
for (int i = 1; i < iNumRasterVertices; i++)
{
if (arvRasterVertices[i].iYScr < arvRasterVertices[i_ymin].iYScr)
i_ymin = i;
}
return i_ymin;
}
//*****************************************************************************************
//
forceinline void InitializeTopVertex
(
SRenderVertex* prv_top
)
//
// Sets the line walking variables for the top of any sub-polygon.
//
//**************************************
{
iY = prv_top->iYScr;
iLineStartIndex = iY * prasScreen->iLinePixels;
}
//*****************************************************************************************
//
forceinline void InitializeForWalk
(
CEdge<LINE>* pedge // Base edge.
)
//
// Prepares triangle for edge walking given a base edge.
//
//**************************************
{
Assert(pedge);
#if bPRIM_STATS
psBaseEdges.Add(0, 1);
psLines.Add(0, pedge->prvTo->iYScr - pedge->prvFrom->iYScr);
#endif
// Initialize edge chosen to be the base edge.
pedge->lineStart.InitializeAsBase(pedge, this);
}
//*****************************************************************************************
//
forceinline bool bBeginValidEdge
(
const CEdge<LINE>* pedge_opposite // Edge opposite the base edge.
)
//
// Prepares triangle for edge walking based on a left and right edge.
//
// Returns:
// Returns 'true' if the edge is visible, otherwise returns 'false.'
//
//**************************************
{
Assert(pedge_opposite);
Assert(pedge_opposite->prvTo);
iYTo = pedge_opposite->prvTo->iYScr;
return iY < iYTo;
}
//*****************************************************************************************
//
forceinline void InitializeForEdge
(
const CEdge<LINE>* pedge_left, // Base edge.
const CEdge<LINE>* pedge_right // Edge opposite the base edge.
)
//
// Updates triangle information for rasterizing a new edge.
//
//**************************************
{
Assert(pedge_left);
Assert(pedge_right);
#if bPRIM_STATS
psTrapezoids.Add(0, 1);
#endif
fxLineLength = (pedge_right->lineStart.fxX - pedge_left->lineStart.fxX);
fxDeltaLineLength = (pedge_right->lineIncrement.fxX - pedge_left->lineIncrement.fxX);
}
//*****************************************************************************************
//
forceinline void RenderFromLeft
(
CEdge<LINE>* pedge_left,
CEdge<LINE>* pedge_right0,
CEdge<LINE>* pedge_right1
)
//
// Scans through triangle edges using the single left edge as the base edge.
//
// Notes:
// The triangle is subdivided and scanned as follows:
//
// |\
// | \
// | \ right edge 0:
// left edge | \ (top triangle subdivision)
// (base edge) | \
// | \
// |-------
// | /
// | /
// | /
// | / right edge 1:
// | / (bottom triangle subdivision)
// | /
// |/
//
//**************************************
{
CCycleTimer ctmr;
Assert(pedge_left);
Assert(pedge_right0);
Assert(pedge_right1);
InitializeTopVertex(pedge_left->prvFrom);
// Initialize triangle-wide data based on the single left edge.
InitializeForWalkEx(this, pedge_left);
#if bPOLY_STATS
psDrawPolygonWalk.Add(ctmr(), 1);
#endif
#if bLOCK_STAT
{
CCycleTimer ctmr_lock;
prasScreen->Lock();
psDrawPolygonLock.Add(ctmr_lock(), 1);
}
#else
// Lock the surface for renderering.
prasScreen->Lock();
#endif
// Scan top sub-triangle of the triangle.
if (bBeginValidEdge(pedge_right0))
{
InitializeForEdge(pedge_left, pedge_right0);
{
pedge_left->lineStart.AssertXRange(fxLineLength);
#if bPOLY_STATS
psDrawPolygonWalk.Add(ctmr(), 1);
#endif
DrawSubtriangle(&pedge_left->lineStart, this);
psPixels.Add(ctmr());
}
}
// Scan the bottom sub-triangle of the triangle.
if (bBeginValidEdge(pedge_right1))
{
InitializeForEdge(pedge_left, pedge_right1);
{
pedge_left->lineStart.AssertXRange(fxLineLength);
#if bPOLY_STATS
psDrawPolygonWalk.Add(ctmr(), 1);
#endif
DrawSubtriangle(&pedge_left->lineStart, this);
psPixels.Add(ctmr());
}
}
}
//*****************************************************************************************
//
forceinline void RenderFromRight
(
CEdge<LINE>* pedge_left0,
CEdge<LINE>* pedge_left1,
CEdge<LINE>* pedge_right
)
//
// Scans through triangle edges using the two left edges as base edges.
//
// Notes:
// The triangle is subdivided and scanned as follows:
//
// /|
// / |
// left edge 0: / |
// (top triangle / | right edge
// subdivision) / |
// / |
// -------|
// \ |
// \ |
// left edge 1: \ |
// (bottom triangle \ |
// subdivision) \ |
// \ |
// \|
//
//**************************************
{
CCycleTimer ctmr;
Assert(pedge_left0);
Assert(pedge_left1);
Assert(pedge_right);
InitializeTopVertex(pedge_left0->prvFrom);
InitializeForWalkEx(this, pedge_left0);
fxLineLength = (pedge_right->lineStart.fxX - pedge_left0->lineStart.fxX);
#if bPOLY_STATS
psDrawPolygonWalk.Add(ctmr(), 1);
#endif
#if bLOCK_STAT
{
CCycleTimer ctmr_lock;
prasScreen->Lock();
psDrawPolygonLock.Add(ctmr_lock(), 1);
}
#else
// Lock the surface for renderering.
prasScreen->Lock();
#endif
// Scan top sub-triangle of the triangle.
iYTo = pedge_left0->prvTo->iYScr;
if (iY < iYTo)
{
fxDeltaLineLength = (pedge_right->lineIncrement.fxX - pedge_left0->lineIncrement.fxX);
pedge_left0->lineStart.AssertXRange(fxLineLength);
#if bPOLY_STATS
psDrawPolygonWalk.Add(ctmr(), 1);
#endif
DrawSubtriangle(&pedge_left0->lineStart, this);
psPixels.Add(ctmr());
}
// Scan the bottom sub-triangle of the triangle.
iYTo = pedge_left1->prvTo->iYScr;
if (iY < iYTo)
{
InitializeForWalkEx(this, pedge_left1);
// Update line length for more accuracy, adjusting by the difference between the
// accumulated X of the left edge, and the exact X of the new left vertex.
fxLineLength += pedge_left0->lineStart.fxX;
fxLineLength -= pedge_left1->lineStart.fxX;
fxDeltaLineLength = (pedge_right->lineIncrement.fxX - pedge_left1->lineIncrement.fxX);
pedge_left1->lineStart.AssertXRange(fxLineLength);
#if bPOLY_STATS
psDrawPolygonWalk.Add(ctmr(), 1);
#endif
DrawSubtriangle(&pedge_left1->lineStart, this);
psPixels.Add(ctmr());
}
}
};
//
// Template parameter includes.
//
#include "GouraudT.hpp"
#include "TransparencyT.hpp"
#include "MapT.hpp"
#include "IndexT.hpp"
#include "ColLookupT.hpp"
#include "Edge.hpp"
#include "Scanline.hpp"
#include "DrawSubTriangle.hpp"
#if (VER_ASM)
//
// Custom optimized versions of selected global templated polygon setup functions.
//
void InitializePolygonData(TCopyPersp& lineData, CRenderPolygon* rpoly);
void InitializePolygonData(TCopyPerspTrans& lineData, CRenderPolygon* rpoly);
void InitializePolygonData(TCopyTerrainPersp& lineData, CRenderPolygon* rpoly);
void InitializePolygonData(TTexturePersp& lineData, CRenderPolygon* rpoly);
void InitializePolygonData(TTexturePerspTrans& lineData, CRenderPolygon* rpoly);
void InitializePolygonData(TTexturePerspGour& lineData, CRenderPolygon* rpoly);
void InitializePolygonData(TTexturePerspTransGour& lineData, CRenderPolygon* rpoly);
void InitializePolygonData(TBumpPersp& lineData, CRenderPolygon* rpoly);
void InitializePolygonData(TBumpPerspTrans& lineData, CRenderPolygon* rpoly);
void InitializePolygonData(TGFogPersp& lineData, CRenderPolygon* rpoly);
void InitializePolygonData(TCopyLinear& lineData, CRenderPolygon* rpoly);
void InitializePolygonData(TCopyLinearTrans& lineData, CRenderPolygon* rpoly);
void InitializePolygonData(TCopyTerrainLinear& lineData, CRenderPolygon* rpoly);
void InitializePolygonData(TTextureLinear& lineData, CRenderPolygon* rpoly);
void InitializePolygonData(TTextureLinearTrans& lineData, CRenderPolygon* rpoly);
void InitializePolygonData(TTextureLinearGour& lineData, CRenderPolygon* rpoly);
void InitializePolygonData(TTextureLinearTransGour& lineData, CRenderPolygon* rpoly);
void InitializePolygonData(TBumpLinear& lineData, CRenderPolygon* rpoly);
void InitializePolygonData(TBumpLinearTrans& lineData, CRenderPolygon* rpoly);
void InitializePolygonData(TGFogLinear& lineData, CRenderPolygon* rpoly);
void InitializePolygonData(TTexNoClutLinear& lineData, CRenderPolygon* rpoly);
void InitializePolygonData(TTexNoClutLinearTrans& lineData, CRenderPolygon* rpoly);
void InitializePolygonData(TShadowTrans8& lineData, CRenderPolygon* rpoly);
void InitializePolygonData(TShadowTrans32& lineData, CRenderPolygon* rpoly);
#if (BILINEAR_FILTER)
void InitializePolygonData(TCopyPerspFilter& lineData, CRenderPolygon* rpoly);
void InitializePolygonData(TCopyLinearFilter& lineData, CRenderPolygon* rpoly);
#endif
void InitializePolygonData(TStippleTexPersp& lineData, CRenderPolygon* rpoly);
void InitializePolygonData(TStippleTexLinear& lineData, CRenderPolygon* rpoly);
void InitializePolygonData(TWaterPersp& lineData, CRenderPolygon* rpoly);
void InitializePolygonData(TWaterLinear& lineData, CRenderPolygon* rpoly);
void InitializePolygonData(TAlphaTexPersp& lineData, CRenderPolygon* rpoly);
void InitializePolygonData(TAlphaTexLinear& lineData, CRenderPolygon* rpoly);
void InitializeEdge(CEdge<TCopyPersp>& edge, SRenderVertex* prv_from, SRenderVertex* prv_to);
void InitializeEdge(CEdge<TCopyPerspTrans>& edge, SRenderVertex* prv_from, SRenderVertex* prv_to);
void InitializeEdge(CEdge<TCopyTerrainPersp>& edge, SRenderVertex* prv_from, SRenderVertex* prv_to);
void InitializeEdge(CEdge<TTexturePersp>& edge, SRenderVertex* prv_from, SRenderVertex* prv_to);
void InitializeEdge(CEdge<TTexturePerspTrans>& edge, SRenderVertex* prv_from, SRenderVertex* prv_to);
void InitializeEdge(CEdge<TTexturePerspGour>& edge, SRenderVertex* prv_from, SRenderVertex* prv_to);
void InitializeEdge(CEdge<TTexturePerspTransGour>& edge, SRenderVertex* prv_from, SRenderVertex* prv_to);
void InitializeEdge(CEdge<TBumpPersp>& edge, SRenderVertex* prv_from, SRenderVertex* prv_to);
void InitializeEdge(CEdge<TBumpPerspTrans>& edge, SRenderVertex* prv_from, SRenderVertex* prv_to);
void InitializeEdge(CEdge<TGFogPersp>& edge, SRenderVertex* prv_from, SRenderVertex* prv_to);
void InitializeEdge(CEdge<TCopyLinear>& edge, SRenderVertex* prv_from, SRenderVertex* prv_to);
void InitializeEdge(CEdge<TCopyLinearTrans>& edge, SRenderVertex* prv_from, SRenderVertex* prv_to);
void InitializeEdge(CEdge<TCopyTerrainLinear>& edge, SRenderVertex* prv_from, SRenderVertex* prv_to);
void InitializeEdge(CEdge<TTextureLinear>& edge, SRenderVertex* prv_from, SRenderVertex* prv_to);
void InitializeEdge(CEdge<TTextureLinearTrans>& edge, SRenderVertex* prv_from, SRenderVertex* prv_to);
void InitializeEdge(CEdge<TTextureLinearGour>& edge, SRenderVertex* prv_from, SRenderVertex* prv_to);
void InitializeEdge(CEdge<TTextureLinearTransGour>& edge, SRenderVertex* prv_from, SRenderVertex* prv_to);
void InitializeEdge(CEdge<TBumpLinear>& edge, SRenderVertex* prv_from, SRenderVertex* prv_to);
void InitializeEdge(CEdge<TBumpLinearTrans>& edge, SRenderVertex* prv_from, SRenderVertex* prv_to);
void InitializeEdge(CEdge<TGFogLinear>& edge, SRenderVertex* prv_from, SRenderVertex* prv_to);
void InitializeEdge(CEdge<TTexNoClutLinear>& edge, SRenderVertex* prv_from, SRenderVertex* prv_to);
void InitializeEdge(CEdge<TTexNoClutLinearTrans>& edge, SRenderVertex* prv_from, SRenderVertex* prv_to);
void InitializeEdge(CEdge<TShadowTrans8>& edge, SRenderVertex* prv_from, SRenderVertex* prv_to);
void InitializeEdge(CEdge<TShadowTrans32>& edge, SRenderVertex* prv_from, SRenderVertex* prv_to);
#if (BILINEAR_FILTER)
void InitializeEdge(CEdge<TCopyPerspFilter>& edge, SRenderVertex* prv_from, SRenderVertex* prv_to);
void InitializeEdge(CEdge<TCopyLinearFilter>& edge, SRenderVertex* prv_from, SRenderVertex* prv_to);
#endif
void InitializeEdge(CEdge<TStippleTexPersp>& edge, SRenderVertex* prv_from, SRenderVertex* prv_to);
void InitializeEdge(CEdge<TStippleTexLinear>& edge, SRenderVertex* prv_from, SRenderVertex* prv_to);
void InitializeEdge(CEdge<TWaterPersp>& edge, SRenderVertex* prv_from, SRenderVertex* prv_to);
void InitializeEdge(CEdge<TWaterLinear>& edge, SRenderVertex* prv_from, SRenderVertex* prv_to);
void InitializeEdge(CEdge<TAlphaTexPersp>& edge, SRenderVertex* prv_from, SRenderVertex* prv_to);
void InitializeEdge(CEdge<TAlphaTexLinear>& edge, SRenderVertex* prv_from, SRenderVertex* prv_to);
bool bInitTriangleDataEx(CDrawPolygon<TCopyPersp>* poly, SRenderVertex* prv_a,
SRenderVertex* prv_b, SRenderVertex* prv_c, bool b_update);
bool bInitTriangleDataEx(CDrawPolygon<TCopyPerspTrans>* poly, SRenderVertex* prv_a,
SRenderVertex* prv_b, SRenderVertex* prv_c, bool b_update);
bool bInitTriangleDataEx(CDrawPolygon<TCopyTerrainPersp>* poly, SRenderVertex* prv_a,
SRenderVertex* prv_b, SRenderVertex* prv_c, bool b_update);
bool bInitTriangleDataEx(CDrawPolygon<TTexturePersp>* poly, SRenderVertex* prv_a,
SRenderVertex* prv_b, SRenderVertex* prv_c, bool b_update);
bool bInitTriangleDataEx(CDrawPolygon<TTexturePerspTrans>* poly, SRenderVertex* prv_a,
SRenderVertex* prv_b, SRenderVertex* prv_c, bool b_update);
bool bInitTriangleDataEx(CDrawPolygon<TTexturePerspGour>* poly, SRenderVertex* prv_a,
SRenderVertex* prv_b, SRenderVertex* prv_c, bool b_update);
bool bInitTriangleDataEx(CDrawPolygon<TTexturePerspTransGour>* poly, SRenderVertex* prv_a,
SRenderVertex* prv_b, SRenderVertex* prv_c, bool b_update);
bool bInitTriangleDataEx(CDrawPolygon<TBumpPersp>* poly, SRenderVertex* prv_a,
SRenderVertex* prv_b, SRenderVertex* prv_c, bool b_update);
bool bInitTriangleDataEx(CDrawPolygon<TBumpPerspTrans>* poly, SRenderVertex* prv_a,
SRenderVertex* prv_b, SRenderVertex* prv_c, bool b_update);
bool bInitTriangleDataEx(CDrawPolygon<TGFogPersp>* poly, SRenderVertex* prv_a,
SRenderVertex* prv_b, SRenderVertex* prv_c, bool b_update);
bool bInitTriangleDataEx(CDrawPolygon<TCopyLinear>* poly, SRenderVertex* prv_a,
SRenderVertex* prv_b, SRenderVertex* prv_c, bool b_update);
bool bInitTriangleDataEx(CDrawPolygon<TCopyLinearTrans>* poly, SRenderVertex* prv_a,
SRenderVertex* prv_b, SRenderVertex* prv_c, bool b_update);
bool bInitTriangleDataEx(CDrawPolygon<TCopyTerrainLinear>* poly, SRenderVertex* prv_a,
SRenderVertex* prv_b, SRenderVertex* prv_c, bool b_update);
bool bInitTriangleDataEx(CDrawPolygon<TTextureLinear>* poly, SRenderVertex* prv_a,
SRenderVertex* prv_b, SRenderVertex* prv_c, bool b_update);
bool bInitTriangleDataEx(CDrawPolygon<TTextureLinearTrans>* poly, SRenderVertex* prv_a,
SRenderVertex* prv_b, SRenderVertex* prv_c, bool b_update);
bool bInitTriangleDataEx(CDrawPolygon<TTextureLinearGour>* poly, SRenderVertex* prv_a,
SRenderVertex* prv_b, SRenderVertex* prv_c, bool b_update);
bool bInitTriangleDataEx(CDrawPolygon<TTextureLinearTransGour>* poly, SRenderVertex* prv_a,
SRenderVertex* prv_b, SRenderVertex* prv_c, bool b_update);
bool bInitTriangleDataEx(CDrawPolygon<TBumpLinear>* poly, SRenderVertex* prv_a,
SRenderVertex* prv_b, SRenderVertex* prv_c, bool b_update);
bool bInitTriangleDataEx(CDrawPolygon<TBumpLinearTrans>* poly, SRenderVertex* prv_a,
SRenderVertex* prv_b, SRenderVertex* prv_c, bool b_update);
bool bInitTriangleDataEx(CDrawPolygon<TGFogLinear>* poly, SRenderVertex* prv_a,
SRenderVertex* prv_b, SRenderVertex* prv_c, bool b_update);
bool bInitTriangleDataEx(CDrawPolygon<TTexNoClutLinear>* poly, SRenderVertex* prv_a,
SRenderVertex* prv_b, SRenderVertex* prv_c, bool b_update);
bool bInitTriangleDataEx(CDrawPolygon<TTexNoClutLinearTrans>* poly, SRenderVertex* prv_a,
SRenderVertex* prv_b, SRenderVertex* prv_c, bool b_update);
bool bInitTriangleDataEx(CDrawPolygon<TShadowTrans8>* poly, SRenderVertex* prv_a,
SRenderVertex* prv_b, SRenderVertex* prv_c, bool b_update);
bool bInitTriangleDataEx(CDrawPolygon<TShadowTrans32>* poly, SRenderVertex* prv_a,
SRenderVertex* prv_b, SRenderVertex* prv_c, bool b_update);
#if (BILINEAR_FILTER)
bool bInitTriangleDataEx(CDrawPolygon<TCopyPerspFilter>* poly, SRenderVertex* prv_a,
SRenderVertex* prv_b, SRenderVertex* prv_c, bool b_update);
bool bInitTriangleDataEx(CDrawPolygon<TCopyLinearFilter>* poly, SRenderVertex* prv_a,
SRenderVertex* prv_b, SRenderVertex* prv_c, bool b_update);
#endif
bool bInitTriangleDataEx(CDrawPolygon<TStippleTexPersp>* poly, SRenderVertex* prv_a,
SRenderVertex* prv_b, SRenderVertex* prv_c, bool b_update);
bool bInitTriangleDataEx(CDrawPolygon<TStippleTexLinear>* poly, SRenderVertex* prv_a,
SRenderVertex* prv_b, SRenderVertex* prv_c, bool b_update);
bool bInitTriangleDataEx(CDrawPolygon<TWaterPersp>* poly, SRenderVertex* prv_a,
SRenderVertex* prv_b, SRenderVertex* prv_c, bool b_update);
bool bInitTriangleDataEx(CDrawPolygon<TWaterLinear>* poly, SRenderVertex* prv_a,
SRenderVertex* prv_b, SRenderVertex* prv_c, bool b_update);
bool bInitTriangleDataEx(CDrawPolygon<TAlphaTexPersp>* poly, SRenderVertex* prv_a,
SRenderVertex* prv_b, SRenderVertex* prv_c, bool b_update);
bool bInitTriangleDataEx(CDrawPolygon<TAlphaTexLinear>* poly, SRenderVertex* prv_a,
SRenderVertex* prv_b, SRenderVertex* prv_c, bool b_update);
bool bInitGradientDataPlanarEx(CDrawPolygon<TCopyPersp>* poly);
bool bInitGradientDataPlanarEx(CDrawPolygon<TCopyPerspTrans>* poly);
bool bInitGradientDataPlanarEx(CDrawPolygon<TCopyTerrainPersp>* poly);
bool bInitGradientDataPlanarEx(CDrawPolygon<TTexturePersp>* poly);
bool bInitGradientDataPlanarEx(CDrawPolygon<TTexturePerspTrans>* poly);
bool bInitGradientDataPlanarEx(CDrawPolygon<TBumpPersp>* poly);
bool bInitGradientDataPlanarEx(CDrawPolygon<TBumpPerspTrans>* poly);
#if (BILINEAR_FILTER)
bool bInitGradientDataPlanarEx(CDrawPolygon<TCopyPerspFilter>* poly);
#endif
bool bInitGradientDataPlanarEx(CDrawPolygon<TStippleTexPersp>* poly);
bool bInitGradientDataPlanarEx(CDrawPolygon<TWaterPersp>* poly);
bool bInitGradientDataPlanarEx(CDrawPolygon<TAlphaTexPersp>* poly);
#if (TARGET_PROCESSOR == PROCESSOR_K6_3D)
//
// We can't beat the compiled code on the Pentium for this routine so
// only K6_3D version exist.
//
void InitializeForWalkEx(CDrawPolygon<TCopyPersp>* poly, CEdge<TCopyPersp>* pedge);
void InitializeForWalkEx(CDrawPolygon<TCopyPerspTrans>* poly, CEdge<TCopyPerspTrans>* pedge);
void InitializeForWalkEx(CDrawPolygon<TCopyTerrainPersp>* poly, CEdge<TCopyTerrainPersp>* pedge);
void InitializeForWalkEx(CDrawPolygon<TTexturePersp>* poly, CEdge<TTexturePersp>* pedge);
void InitializeForWalkEx(CDrawPolygon<TTexturePerspTrans>* poly, CEdge<TTexturePerspTrans>* pedge);
void InitializeForWalkEx(CDrawPolygon<TTexturePerspGour>* poly, CEdge<TTexturePerspGour>* pedge);
void InitializeForWalkEx(CDrawPolygon<TTexturePerspTransGour>* poly, CEdge<TTexturePerspTransGour>* pedge);
void InitializeForWalkEx(CDrawPolygon<TBumpPersp>* poly, CEdge<TBumpPersp>* pedge);
void InitializeForWalkEx(CDrawPolygon<TBumpPerspTrans>* poly, CEdge<TBumpPerspTrans>* pedge);
void InitializeForWalkEx(CDrawPolygon<TGFogPersp>* poly, CEdge<TGFogPersp>* pedge);
void InitializeForWalkEx(CDrawPolygon<TCopyLinear>* poly, CEdge<TCopyLinear>* pedge);
void InitializeForWalkEx(CDrawPolygon<TCopyLinearTrans>* poly, CEdge<TCopyLinearTrans>* pedge);
void InitializeForWalkEx(CDrawPolygon<TCopyTerrainLinear>* poly, CEdge<TCopyTerrainLinear>* pedge);
void InitializeForWalkEx(CDrawPolygon<TTextureLinear>* poly, CEdge<TTextureLinear>* pedge);
void InitializeForWalkEx(CDrawPolygon<TTextureLinearTrans>* poly, CEdge<TTextureLinearTrans>* pedge);
void InitializeForWalkEx(CDrawPolygon<TTextureLinearGour>* poly, CEdge<TTextureLinearGour>* pedge);
void InitializeForWalkEx(CDrawPolygon<TTextureLinearTransGour>* poly, CEdge<TTextureLinearTransGour>* pedge);
void InitializeForWalkEx(CDrawPolygon<TBumpLinear>* poly, CEdge<TBumpLinear>* pedge);
void InitializeForWalkEx(CDrawPolygon<TBumpLinearTrans>* poly, CEdge<TBumpLinearTrans>* pedge);
void InitializeForWalkEx(CDrawPolygon<TGFogLinear>* poly, CEdge<TGFogLinear>* pedge);
void InitializeForWalkEx(CDrawPolygon<TTexNoClutLinear>* poly, CEdge<TTexNoClutLinear>* pedge);
void InitializeForWalkEx(CDrawPolygon<TTexNoClutLinearTrans>* poly, CEdge<TTexNoClutLinearTrans>* pedge);
void InitializeForWalkEx(CDrawPolygon<TShadowTrans8>* poly, CEdge<TShadowTrans8>* pedge);
void InitializeForWalkEx(CDrawPolygon<TShadowTrans32>* poly, CEdge<TShadowTrans32>* pedge);
#if (BILINEAR_FILTER)
void InitializeForWalkEx(CDrawPolygon<TCopyPerspFilter>* poly, CEdge<TCopyPerspFilter>* pedge);
void InitializeForWalkEx(CDrawPolygon<TCopyLinearFilter>* poly, CEdge<TCopyLinearFilter>* pedge);
#endif
void InitializeForWalkEx(CDrawPolygon<TStippleTexPersp>* poly, CEdge<TStippleTexPersp>* pedge);
void InitializeForWalkEx(CDrawPolygon<TStippleTexLinear>* poly, CEdge<TStippleTexLinear>* pedge);
void InitializeForWalkEx(CDrawPolygon<TWaterPersp>* poly, CEdge<TWaterPersp>* pedge);
void InitializeForWalkEx(CDrawPolygon<TWaterLinear>* poly, CEdge<TWaterLinear>* pedge);
void InitializeForWalkEx(CDrawPolygon<TAlphaTexPersp>* poly, CEdge<TAlphaTexPersp>* pedge);
void InitializeForWalkEx(CDrawPolygon<TAlphaTexLinear>* poly, CEdge<TAlphaTexLinear>* pedge);
//
// This routine is used on the K6_3D to empty the MMX state.
//
void DoneDrawingPolygon(CDrawPolygon<TCopyPersp>* poly);
void DoneDrawingPolygon(CDrawPolygon<TCopyPerspTrans>* poly);
void DoneDrawingPolygon(CDrawPolygon<TCopyTerrainPersp>* poly);
void DoneDrawingPolygon(CDrawPolygon<TTexturePersp>* poly);
void DoneDrawingPolygon(CDrawPolygon<TTexturePerspTrans>* poly);
void DoneDrawingPolygon(CDrawPolygon<TTexturePerspGour>* poly);
void DoneDrawingPolygon(CDrawPolygon<TTexturePerspTransGour>* poly);
void DoneDrawingPolygon(CDrawPolygon<TBumpPersp>* poly);
void DoneDrawingPolygon(CDrawPolygon<TBumpPerspTrans>* poly);
void DoneDrawingPolygon(CDrawPolygon<TGFogPersp>* poly);
void DoneDrawingPolygon(CDrawPolygon<TCopyLinear>* poly);
void DoneDrawingPolygon(CDrawPolygon<TCopyLinearTrans>* poly);
void DoneDrawingPolygon(CDrawPolygon<TCopyTerrainLinear>* poly);
void DoneDrawingPolygon(CDrawPolygon<TTextureLinear>* poly);
void DoneDrawingPolygon(CDrawPolygon<TTextureLinearTrans>* poly);
void DoneDrawingPolygon(CDrawPolygon<TTextureLinearGour>* poly);
void DoneDrawingPolygon(CDrawPolygon<TTextureLinearTransGour>* poly);
void DoneDrawingPolygon(CDrawPolygon<TBumpLinear>* poly);
void DoneDrawingPolygon(CDrawPolygon<TBumpLinearTrans>* poly);
void DoneDrawingPolygon(CDrawPolygon<TGFogLinear>* poly);
void DoneDrawingPolygon(CDrawPolygon<TTexNoClutLinear>* poly);
void DoneDrawingPolygon(CDrawPolygon<TTexNoClutLinearTrans>* poly);
void DoneDrawingPolygon(CDrawPolygon<TShadowTrans8>* poly);
void DoneDrawingPolygon(CDrawPolygon<TShadowTrans32>* poly);
#if (BILINEAR_FILTER)
void DoneDrawingPolygon(CDrawPolygon<TCopyPerspFilter>* poly);
void DoneDrawingPolygon(CDrawPolygon<TCopyLinearFilter>* poly);
#endif
void DoneDrawingPolygon(CDrawPolygon<TStippleTexPersp>* poly);
void DoneDrawingPolygon(CDrawPolygon<TStippleTexLinear>* poly);
void DoneDrawingPolygon(CDrawPolygon<TWaterPersp>* poly);
void DoneDrawingPolygon(CDrawPolygon<TWaterLinear>* poly);
void DoneDrawingPolygon(CDrawPolygon<TAlphaTexPersp>* poly);
void DoneDrawingPolygon(CDrawPolygon<TAlphaTexLinear>* poly);
#endif // if (TARGET_PROCESSOR == PROCESSOR_K6_3D)
#endif // if (VER_ASM)
//
// Generic versions of global templated polygon setup functions.
//
template <class LINE> forceinline void InitializePolygonData
(
LINE& lineData,
CRenderPolygon* rpoly
)
{
lineData.InitializePolygonData(rpoly->paprvPolyVertices, rpoly->ptexTexture, rpoly->cvFace,
rpoly->iMipLevel);
}
template <class LINE> forceinline void InitializeEdge
(
CEdge<LINE>& edge, // The edge to initialize.
SRenderVertex* prv_from, // Starting coordinate of edge.
SRenderVertex* prv_to // End coordinate of edge.
)
{
edge.InitializeEdge(prv_from, prv_to);
}
template <class LINE> forceinline bool bInitTriangleDataEx
(
CDrawPolygon<LINE>* poly,
SRenderVertex* prv_a, // 3 vertices making up this triangle.
SRenderVertex* prv_b,
SRenderVertex* prv_c,
bool b_update
)
{
return poly->bInitTriangleData(prv_a, prv_b, prv_c, b_update);
}
template <class LINE> forceinline bool bInitGradientDataPlanarEx
(
CDrawPolygon<LINE>* poly
)
{
return poly->bInitGradientDataPlanar();
}
template <class LINE> forceinline void InitializeForWalkEx
(
CDrawPolygon<LINE>* poly,
CEdge<LINE>* pedge
)
{
Assert(pedge);
#if bPRIM_STATS
psBaseEdges.Add(0, 1);
psLines.Add(0, pedge->prvTo->iYScr - pedge->prvFrom->iYScr);
#endif
// Set base edge.
poly->pedgeBase = pedge;
// Initialize edge chosen to be the base edge.
pedge->lineStart.InitializeAsBase(pedge, poly);
}
template <class LINE> forceinline void DoneDrawingPolygon
(
CDrawPolygon<LINE>* poly
)
{
// Do nothing.
return;
}
#endif // if HEADER_RENDERER_PRIMITIVES_DRAWTRIANGLE_HPP
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