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authorDavid Walter Seikel2014-01-13 19:47:58 +1000
committerDavid Walter Seikel2014-01-13 19:47:58 +1000
commitf9158592e1478b2013afc7041d9ed041cf2d2f4a (patch)
treeb16e389d7988700e21b4c9741044cefa536dcbae /libraries/irrlicht-1.8.1/source/Irrlicht/CTRTextureWire2.cpp
parentLibraries readme updated with change markers and more of the Irrlicht changes. (diff)
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Update Irrlicht to 1.8.1. Include actual change markers this time. lol
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-rw-r--r--libraries/irrlicht-1.8.1/source/Irrlicht/CTRTextureWire2.cpp298
1 files changed, 298 insertions, 0 deletions
diff --git a/libraries/irrlicht-1.8.1/source/Irrlicht/CTRTextureWire2.cpp b/libraries/irrlicht-1.8.1/source/Irrlicht/CTRTextureWire2.cpp
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1// Copyright (C) 2002-2012 Nikolaus Gebhardt / Thomas Alten
2// This file is part of the "Irrlicht Engine".
3// For conditions of distribution and use, see copyright notice in irrlicht.h
4
5#include "IrrCompileConfig.h"
6#include "IBurningShader.h"
7
8#ifdef _IRR_COMPILE_WITH_BURNINGSVIDEO_
9
10// compile flag for this file
11#undef USE_ZBUFFER
12#undef IPOL_Z
13#undef CMP_Z
14#undef WRITE_Z
15
16#undef IPOL_W
17#undef CMP_W
18#undef WRITE_W
19
20#undef SUBTEXEL
21#undef INVERSE_W
22
23#undef IPOL_C0
24#undef IPOL_T0
25#undef IPOL_T1
26
27// define render case
28#define SUBTEXEL
29#define INVERSE_W
30
31#define USE_ZBUFFER
32#define IPOL_W
33#define CMP_W
34#define WRITE_W
35
36
37//#define IPOL_C0
38#define IPOL_T0
39//#define IPOL_T1
40
41// apply global override
42#ifndef SOFTWARE_DRIVER_2_PERSPECTIVE_CORRECT
43 #undef INVERSE_W
44#endif
45
46#ifndef SOFTWARE_DRIVER_2_SUBTEXEL
47 #undef SUBTEXEL
48#endif
49
50#if !defined ( SOFTWARE_DRIVER_2_USE_WBUFFER ) && defined ( USE_ZBUFFER )
51 #ifndef SOFTWARE_DRIVER_2_PERSPECTIVE_CORRECT
52 #undef IPOL_W
53 #endif
54 #define IPOL_Z
55
56 #ifdef CMP_W
57 #undef CMP_W
58 #define CMP_Z
59 #endif
60
61 #ifdef WRITE_W
62 #undef WRITE_W
63 #define WRITE_Z
64 #endif
65
66#endif
67
68
69namespace irr
70{
71
72namespace video
73{
74
75class CTRTextureWire2 : public IBurningShader
76{
77public:
78
79 //! constructor
80 CTRTextureWire2(CBurningVideoDriver* driver);
81
82 //! draws an indexed triangle list
83 virtual void drawTriangle ( const s4DVertex *a,const s4DVertex *b,const s4DVertex *c );
84 virtual void drawLine ( const s4DVertex *a,const s4DVertex *b);
85
86
87
88private:
89 void renderAlphaLine ( const s4DVertex *a,const s4DVertex *b ) const;
90 void renderLine ( const s4DVertex *a,const s4DVertex *b ) const;
91
92};
93
94//! constructor
95CTRTextureWire2::CTRTextureWire2(CBurningVideoDriver* driver)
96: IBurningShader(driver)
97{
98 #ifdef _DEBUG
99 setDebugName("CTRTextureWire2");
100 #endif
101}
102
103
104// swap integer with xor
105static inline void swap_xor ( s32 &a, s32 &b )
106{
107 a ^= b;
108 b ^= a;
109 a ^= b;
110}
111
112
113/*!
114*/
115void CTRTextureWire2::renderLine ( const s4DVertex *a,const s4DVertex *b ) const
116{
117
118 int pitch0 = RenderTarget->getDimension().Width << VIDEO_SAMPLE_GRANULARITY;
119 int pitch1 = RenderTarget->getDimension().Width << 2;
120
121 int aposx = (int) a->Pos.x;
122 int aposy = (int) a->Pos.y;
123 int bposx = (int) b->Pos.x;
124 int bposy = (int) b->Pos.y;
125
126 int dx = bposx - aposx;
127 int dy = bposy - aposy;
128
129 int c;
130 int m;
131 int d = 0;
132 int run;
133
134 tVideoSample *dst;
135#ifdef USE_ZBUFFER
136 fp24 *z;
137#endif
138
139 int xInc0 = 1 << VIDEO_SAMPLE_GRANULARITY;
140 int yInc0 = pitch0;
141
142 int xInc1 = 4;
143 int yInc1 = pitch1;
144
145 tVideoSample color;
146
147#ifdef SOFTWARE_DRIVER_2_USE_VERTEX_COLOR
148 tFixPoint r0, g0, b0;
149 getSample_color ( r0, g0, b0, a->Color[0] );
150 color = fix_to_color ( r0, g0, b0 );
151#else
152 color = (tVideoSample) 0xFFFFFFFF;
153#endif
154
155 if ( dx < 0 )
156 {
157 xInc0 = - ( 1 << VIDEO_SAMPLE_GRANULARITY);
158 xInc1 = -4;
159 dx = -dx;
160 }
161
162 if ( dy > dx )
163 {
164 swap_xor ( dx, dy );
165 swap_xor ( xInc0, yInc0 );
166 swap_xor ( xInc1, yInc1 );
167 }
168
169 if ( 0 == dx )
170 return;
171
172 dst = (tVideoSample*) ( (u8*) (tVideoSample*)RenderTarget->lock() + ( aposy * pitch0 ) + (aposx << VIDEO_SAMPLE_GRANULARITY ) );
173#ifdef USE_ZBUFFER
174 z = (fp24*) ( (u8*) (fp24*) DepthBuffer->lock() + ( aposy * pitch1 ) + (aposx << 2 ) );
175#endif
176
177 c = dx << 1;
178 m = dy << 1;
179
180#ifdef IPOL_Z
181 f32 slopeZ = (b->Pos.z - a->Pos.z) / f32(dx);
182 f32 dataZ = a->Pos.z;
183#endif
184
185#ifdef IPOL_W
186 fp24 slopeW = (b->Pos.w - a->Pos.w) / f32( dx );
187 fp24 dataW = a->Pos.w;
188#endif
189
190 run = dx;
191 while ( run )
192 {
193#ifdef CMP_Z
194 if ( *z >= dataZ )
195#endif
196#ifdef CMP_W
197 if ( dataW >= *z )
198#endif
199 {
200#ifdef WRITE_Z
201 *z = dataZ;
202#endif
203#ifdef WRITE_W
204 *z = dataW;
205#endif
206
207 *dst = color;
208
209 }
210
211 dst = (tVideoSample*) ( (u8*) dst + xInc0 ); // x += xInc
212#ifdef IPOL_Z
213 z = (fp24*) ( (u8*) z + xInc1 );
214#endif
215#ifdef IPOL_W
216 z = (fp24*) ( (u8*) z + xInc1 );
217#endif
218
219 d += m;
220 if ( d > dx )
221 {
222 dst = (tVideoSample*) ( (u8*) dst + yInc0 ); // y += yInc
223#ifdef IPOL_Z
224 z = (fp24*) ( (u8*) z + yInc1 );
225#endif
226#ifdef IPOL_W
227 z = (fp24*) ( (u8*) z + yInc1 );
228#endif
229
230 d -= c;
231 }
232 run -= 1;
233#ifdef IPOL_Z
234 dataZ += slopeZ;
235#endif
236#ifdef IPOL_W
237 dataW += slopeW;
238#endif
239
240 }
241
242}
243
244void CTRTextureWire2::drawTriangle ( const s4DVertex *a,const s4DVertex *b,const s4DVertex *c )
245{
246 sScanLineData line;
247
248 // sort on height, y
249 if ( F32_A_GREATER_B ( a->Pos.y , b->Pos.y ) ) swapVertexPointer(&a, &b);
250 if ( F32_A_GREATER_B ( b->Pos.y , c->Pos.y ) ) swapVertexPointer(&b, &c);
251 if ( F32_A_GREATER_B ( a->Pos.y , b->Pos.y ) ) swapVertexPointer(&a, &b);
252
253 renderLine ( a, b );
254 renderLine ( b, c );
255 renderLine ( a, c );
256
257}
258
259
260void CTRTextureWire2::drawLine ( const s4DVertex *a,const s4DVertex *b)
261{
262
263 // query access to TexMaps
264
265 // sort on height, y
266 if ( a->Pos.y > b->Pos.y ) swapVertexPointer(&a, &b);
267
268 renderLine ( a, b );
269
270}
271
272
273} // end namespace video
274} // end namespace irr
275
276#endif // _IRR_COMPILE_WITH_BURNINGSVIDEO_
277
278namespace irr
279{
280namespace video
281{
282
283
284//! creates a flat triangle renderer
285IBurningShader* createTriangleRendererTextureGouraudWire2(CBurningVideoDriver* driver)
286{
287 #ifdef _IRR_COMPILE_WITH_BURNINGSVIDEO_
288 return new CTRTextureWire2(driver);
289 #else
290 return 0;
291 #endif // _IRR_COMPILE_WITH_BURNINGSVIDEO_
292}
293
294
295} // end namespace video
296} // end namespace irr
297
298
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