source: golgotha/src/render/software/amd3d/rasterize_affine_amd3d.cc @ 80

Last change on this file since 80 was 80, checked in by Sam Hocevar, 14 years ago
  • Adding the Golgotha source code. Not sure what's going to be interesting in there, but since it's all public domain, there's certainly stuff to pick up.
File size: 5.4 KB
Line 
1/********************************************************************** <BR>
2  This file is part of Crack dot Com's free source code release of
3  Golgotha. <a href="http://www.crack.com/golgotha_release"> <BR> for
4  information about compiling & licensing issues visit this URL</a>
5  <PRE> If that doesn't help, contact Jonathan Clark at
6  golgotha_source@usa.net (Subject should have "GOLG" in it)
7***********************************************************************/
8
9#include "software/r1_software.hh"
10#include "software/r1_software_globals.hh"
11#include "software/span_buffer.hh"
12#include "software/inline_fpu.hh"
13#include "software/mappers.hh"
14#include "software/amd3d/amd3d.h"
15
16#ifndef USE_AMD3D
17
18void span_draw_affine_lit_amd3d(span_tri_info *tri) {}
19void span_draw_affine_unlit_amd3d(span_tri_info *tri) {}
20
21#else
22
23void span_draw_affine_unlit_amd3d(span_tri_info *tri)
24{
25  //setup some of the global variables
26  r1_software_class_instance.set_color_tint(tri->color_tint);
27
28  r1_software_texture_ptr   = tri->texture;
29  r1_software_twidth_log2   = tri->twidth_log2;
30  r1_software_texture_width = tri->texture_width;
31  cur_grads                 = tri->grads;
32
33  //about to draw, setup pertinent global vars (s_t_frac_add, s_t_carry, dldx_fixed)
34  _asm
35  {
36    movd mm0,dword ptr [cur_grads]tri_gradients.dsdx
37    nop
38
39    movd mm1,dword ptr [cur_grads]tri_gradients.dtdx   
40    pf2id (m0, m0)
41       
42    movd dword ptr [temp_dsdx],mm0
43    pf2id (m1, m1)
44
45    movd dword ptr [temp_dtdx],mm1
46  }
47
48  dsdx_frac = (temp_dsdx<<16);
49  dtdx_frac = (temp_dtdx<<16);
50
51  s_t_carry[1] = (temp_dsdx>>16) + ((temp_dtdx>>16)<<r1_software_twidth_log2); //integral add when t doesnt carry
52  s_t_carry[0] = s_t_carry[1] + r1_software_texture_width;           //integral add when t carrys
53
54  span_entry *s = &global_span_list[tri->span_list_head]; 
55
56  affine_span left; 
57  while (s!=global_span_list)
58  {
59    left.ooz = s->s.ooz;
60   
61    _asm
62    {
63      //the ordering of variables in the structures used here is AMAZINGLY important
64     
65      mov edi, dword ptr [s]
66      lea eax, dword ptr [cur_grads]
67
68      pi2fd (m0, _edi)
69      movq  mm1,qword ptr [eax]tri_gradients.dsdx
70     
71      pfmul (m1, m0)
72      movq mm2,qword ptr [eax]tri_gradients.dtdx
73     
74      pfmul (m2, m0)
75      movq mm4,qword ptr [eax]tri_gradients.sat00
76     
77      pfacc (m1, m2)
78     
79      //low  32bits of m1 - fx*dsdx + fy*dsdy
80      //high 32bits of m1 - fx*dtdx + fy*dtdy
81     
82      pfadd (m1, m4)
83     
84      //low  32bits of m1 - sat00 + fx*dsdx + fy*dsdy
85      //high 32bits of m1 - tat00 + fx*dtdx + fy*dtdy
86
87      pf2id (m5,m1)
88
89      paddd mm5, qword ptr [eax]tri_gradients.s_adjust
90     
91      movq qword ptr [left]affine_span.s,mm5
92    }
93
94    cur_scanline_texture_func(s->s.scanline_ptr,(s->s.x<<1),&left,s->s.width);   
95    s = &global_span_list[s->s.next_tri_span];
96  }
97}
98
99void span_draw_affine_lit_amd3d(span_tri_info *tri)
100{
101  //setup some of the global variables
102  r1_software_class_instance.set_color_tint(tri->color_tint);
103
104  r1_software_texture_ptr   = tri->texture;
105  r1_software_twidth_log2   = tri->twidth_log2;
106  r1_software_texture_width = tri->texture_width;
107  cur_grads                 = tri->grads;
108
109  //about to draw, setup pertinent global vars (s_t_frac_add, s_t_carry, dldx_fixed)
110  _asm
111  {
112    movd mm0,dword ptr [cur_grads]tri_gradients.dsdx
113    movd mm1,dword ptr [cur_grads]tri_gradients.dtdx
114   
115    pf2id (m0, m0)
116    movd mm2,dword ptr [cur_grads]tri_gradients.dldx
117       
118    pf2id (m1, m1)
119    movd dword ptr [temp_dsdx],mm0
120
121    pf2id (m2, m2)
122    movd dword ptr [temp_dtdx],mm1
123
124    movd dword ptr [dldx_fixed],mm2
125  }
126
127  dsdx_frac = (temp_dsdx<<16);
128  dtdx_frac = (temp_dtdx<<16);
129
130  s_t_carry[1] = (temp_dsdx>>16) + ((temp_dtdx>>16)<<r1_software_twidth_log2); //integral add when t doesnt carry
131  s_t_carry[0] = s_t_carry[1] + r1_software_texture_width;           //integral add when t carrys
132
133  span_entry *s = &global_span_list[tri->span_list_head]; 
134
135  affine_span left; 
136  while (s!=global_span_list)
137  {
138    left.ooz = s->s.ooz;
139   
140    _asm
141    {
142      //the ordering of variables in the structures used here is AMAZINGLY important
143     
144      mov edi, dword ptr [s]
145      lea eax, dword ptr [cur_grads]
146
147      pi2fd (m0, _edi)
148      movq  mm1,qword ptr [eax]tri_gradients.dsdx
149     
150      pfmul (m1, m0)
151      movq mm2,qword ptr [eax]tri_gradients.dtdx
152     
153      pfmul (m2, m0)
154      movq mm4,qword ptr [eax]tri_gradients.sat00
155     
156      pfacc (m1, m2)
157      movq mm3,qword ptr [eax]tri_gradients.dldx
158
159      //low  32bits of m1 - fx*dsdx + fy*dsdy
160      //high 32bits of m1 - fx*dtdx + fy*dtdy
161     
162      pfadd (m1, m4)
163      pfmul (m3, m0)
164
165      //low  32bits of m1 - sat00 + fx*dsdx + fy*dsdy
166      //high 32bits of m1 - tat00 + fx*dtdx + fy*dtdy
167
168      pfacc (m3,m0) //2nd arg can be whatever
169      movq mm4,dword ptr [eax]tri_gradients.lat00
170     
171      //low 32 bits of m3 - fx*dldx + fy*dldy
172     
173      pfadd (m3, m4)
174      //low 32 bits of m3 - lat00 + fx*dldx + fy*dldy
175      pf2id (m5,m1)
176
177      pf2id (m6,m3)
178      paddd mm5, qword ptr [eax]tri_gradients.s_adjust
179     
180      movq qword ptr [left]affine_span.s,mm5
181      movd dword ptr [left]affine_span.l,mm6
182    }
183   
184    cur_scanline_texture_func(s->s.scanline_ptr,(s->s.x<<1),&left,s->s.width);   
185    s = &global_span_list[s->s.next_tri_span];
186  }
187}
188
189#endif
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