1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
|
/*
* Copyright 2000-2001 VA Linux Systems, Inc.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* on the rights to use, copy, modify, merge, publish, distribute, sub
* license, and/or sell copies of the Software, and to permit persons to whom
* the Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
* VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* Authors:
* Keith Whitwell <keith@tungstengraphics.com>
*/
#include "mtypes.h"
#include "mgadd.h"
#include "mgacontext.h"
#include "mgaspan.h"
#include "mgaioctl.h"
#include "swrast/swrast.h"
#define DBG 0
#define LOCAL_VARS \
mgaContextPtr mmesa = MGA_CONTEXT(ctx); \
__DRIdrawablePrivate *dPriv = mmesa->mesa_drawable; \
__DRIscreenPrivate *sPriv = mmesa->driScreen; \
driRenderbuffer *drb = (driRenderbuffer *) rb; \
GLuint pitch = drb->pitch; \
GLuint height = dPriv->h; \
char *buf = (char *)(sPriv->pFB + \
drb->offset + \
dPriv->x * drb->cpp + \
dPriv->y * pitch); \
char *read_buf = buf; \
GLuint p; \
(void) read_buf; (void) buf; (void) p
#define LOCAL_DEPTH_VARS \
mgaContextPtr mmesa = MGA_CONTEXT(ctx); \
__DRIdrawablePrivate *dPriv = mmesa->mesa_drawable; \
__DRIscreenPrivate *sPriv = mmesa->driScreen; \
driRenderbuffer *drb = (driRenderbuffer *) rb; \
GLuint pitch = drb->pitch; \
GLuint height = dPriv->h; \
char *buf = (char *)(sPriv->pFB + \
drb->offset + \
dPriv->x * drb->cpp + \
dPriv->y * pitch)
#define LOCAL_STENCIL_VARS LOCAL_DEPTH_VARS
#define HW_LOCK()
/* FIXME could/should we use dPriv->numClipRects like the other drivers? */
#define HW_CLIPLOOP() \
do { \
int _nc = mmesa->numClipRects; \
while (_nc--) { \
int minx = mmesa->pClipRects[_nc].x1 - mmesa->drawX; \
int miny = mmesa->pClipRects[_nc].y1 - mmesa->drawY; \
int maxx = mmesa->pClipRects[_nc].x2 - mmesa->drawX; \
int maxy = mmesa->pClipRects[_nc].y2 - mmesa->drawY;
#define HW_ENDCLIPLOOP() \
} \
} while (0)
#define HW_UNLOCK()
#define Y_FLIP(_y) (height - _y - 1)
/* 16 bit, RGB565 color spanline and pixel functions
*/
#define SPANTMP_PIXEL_FMT GL_RGB
#define SPANTMP_PIXEL_TYPE GL_UNSIGNED_SHORT_5_6_5
#define TAG(x) mga##x##_565
#define TAG2(x,y) mga##x##_565##y
#include "spantmp2.h"
/* 32 bit, ARGB8888 color spanline and pixel functions
*/
#define SPANTMP_PIXEL_FMT GL_BGRA
#define SPANTMP_PIXEL_TYPE GL_UNSIGNED_INT_8_8_8_8_REV
#define TAG(x) mga##x##_8888
#define TAG2(x,y) mga##x##_8888##y
#include "spantmp2.h"
/* 16 bit depthbuffer functions.
*/
#define WRITE_DEPTH( _x, _y, d ) \
*(GLushort *)(buf + (_x)*2 + (_y)*pitch) = d;
#define READ_DEPTH( d, _x, _y ) \
d = *(GLushort *)(buf + (_x)*2 + (_y)*pitch);
#define TAG(x) mga##x##_z16
#include "depthtmp.h"
/* 32 bit depthbuffer functions.
*/
#define WRITE_DEPTH( _x, _y, d ) \
*(GLuint *)(buf + (_x)*4 + (_y)*pitch) = d;
#define READ_DEPTH( d, _x, _y ) \
d = *(GLuint *)(buf + (_x)*4 + (_y)*pitch);
#define TAG(x) mga##x##_z32
#include "depthtmp.h"
/* 24/8 bit interleaved depth/stencil functions
*/
#define WRITE_DEPTH( _x, _y, d ) { \
GLuint tmp = *(GLuint *)(buf + (_x)*4 + (_y)*pitch); \
tmp &= 0xff; \
tmp |= (d) << 8; \
*(GLuint *)(buf + (_x)*4 + (_y)*pitch) = tmp; \
}
#define READ_DEPTH( d, _x, _y ) { \
d = (*(GLuint *)(buf + (_x)*4 + (_y)*pitch) & ~0xff) >> 8; \
}
#define TAG(x) mga##x##_z24_s8
#include "depthtmp.h"
#define WRITE_STENCIL( _x, _y, d ) { \
GLuint tmp = *(GLuint *)(buf + _x*4 + _y*pitch); \
tmp &= 0xffffff00; \
tmp |= d & 0xff; \
*(GLuint *)(buf + _x*4 + _y*pitch) = tmp; \
}
#define READ_STENCIL( d, _x, _y ) \
d = *(GLuint *)(buf + _x*4 + _y*pitch) & 0xff;
#define TAG(x) mga##x##_z24_s8
#include "stenciltmp.h"
void mgaSpanRenderStart( GLcontext *ctx )
{
mgaContextPtr mmesa = MGA_CONTEXT(ctx);
FLUSH_BATCH( mmesa );
LOCK_HARDWARE_QUIESCENT( mmesa );
}
void mgaSpanRenderFinish( GLcontext *ctx )
{
mgaContextPtr mmesa = MGA_CONTEXT(ctx);
_swrast_flush( ctx );
UNLOCK_HARDWARE( mmesa );
}
/**
* Initialize the driver callbacks for the read / write span functions.
*
* \bug
* To really support RGB888 and RGBA8888 visuals, we need separate read and
* write routines for 888 and 8888. We also need to determine whether or not
* the visual has destination alpha.
*/
void mgaDDInitSpanFuncs( GLcontext *ctx )
{
struct swrast_device_driver *swdd = _swrast_GetDeviceDriverReference(ctx);
swdd->SpanRenderStart = mgaSpanRenderStart;
swdd->SpanRenderFinish = mgaSpanRenderFinish;
}
/**
* Plug in the Get/Put routines for the given driRenderbuffer.
*/
void
mgaSetSpanFunctions(driRenderbuffer *drb, const GLvisual *vis)
{
if (drb->Base.InternalFormat == GL_RGBA) {
if (vis->redBits == 5 && vis->greenBits == 6 && vis->blueBits == 5) {
mgaInitPointers_565(&drb->Base);
}
else {
mgaInitPointers_8888(&drb->Base);
}
}
else if (drb->Base.InternalFormat == GL_DEPTH_COMPONENT16) {
mgaInitDepthPointers_z16(&drb->Base);
}
else if (drb->Base.InternalFormat == GL_DEPTH_COMPONENT24) {
mgaInitDepthPointers_z24_s8(&drb->Base);
}
else if (drb->Base.InternalFormat == GL_DEPTH_COMPONENT32) {
mgaInitDepthPointers_z32(&drb->Base);
}
else if (drb->Base.InternalFormat == GL_STENCIL_INDEX8_EXT) {
mgaInitStencilPointers_z24_s8(&drb->Base);
}
}
|
