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
|
/**************************************************************************
*
* Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
* 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 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 TUNGSTEN GRAPHICS 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.
*
**************************************************************************/
/* Author:
* Brian Paul
*/
#include "pipe/p_defines.h"
#include "sp_clear.h"
#include "sp_context.h"
#include "sp_surface.h"
#include "colormac.h"
static GLuint
color_value(GLuint format, const GLfloat color[4])
{
GLubyte r, g, b, a;
UNCLAMPED_FLOAT_TO_UBYTE(r, color[0]);
UNCLAMPED_FLOAT_TO_UBYTE(g, color[1]);
UNCLAMPED_FLOAT_TO_UBYTE(b, color[2]);
UNCLAMPED_FLOAT_TO_UBYTE(a, color[3]);
switch (format) {
case PIPE_FORMAT_U_R8_G8_B8_A8:
return (r << 24) | (g << 16) | (b << 8) | a;
case PIPE_FORMAT_U_A8_R8_G8_B8:
return (a << 24) | (r << 16) | (g << 8) | b;
case PIPE_FORMAT_U_R5_G6_B5:
return ((r & 0xf8) << 8) | ((g & 0xfc) << 3) | (b >> 3);
default:
return 0;
}
}
void
softpipe_clear(struct pipe_context *pipe, GLboolean color, GLboolean depth,
GLboolean stencil, GLboolean accum)
{
const struct softpipe_context *softpipe = softpipe_context(pipe);
const GLint x = softpipe->cliprect.minx;
const GLint y = softpipe->cliprect.miny;
const GLint w = softpipe->cliprect.maxx - x;
const GLint h = softpipe->cliprect.maxy - y;
if (color) {
GLuint i;
for (i = 0; i < softpipe->framebuffer.num_cbufs; i++) {
struct pipe_surface *ps = softpipe->framebuffer.cbufs[i];
if (softpipe->blend.colormask == (PIPE_MASK_R | PIPE_MASK_G |
PIPE_MASK_B | PIPE_MASK_A)) {
/* no masking */
GLuint clearVal = color_value(ps->format,
softpipe->clear_color.color);
pipe->region_fill(pipe, ps->region, 0, x, y, w, h, clearVal);
}
else {
/* masking */
/*
for (j = 0; j < h; j++) {
sps->write_mono_row_ub(sps, w, x, y + j, clr);
}
*/
}
}
}
if (depth) {
struct pipe_surface *ps = softpipe->framebuffer.zbuf;
GLuint clearVal;
switch (ps->format) {
case PIPE_FORMAT_U_Z16:
clearVal = (GLuint) (softpipe->depth_test.clear * 65535.0);
break;
case PIPE_FORMAT_U_Z32:
clearVal = (GLuint) (softpipe->depth_test.clear * 0xffffffff);
break;
case PIPE_FORMAT_Z24_S8:
clearVal = (GLuint) (softpipe->depth_test.clear * 0xffffff);
break;
default:
assert(0);
}
pipe->region_fill(pipe, ps->region, 0, x, y, w, h, clearVal);
}
if (stencil) {
struct pipe_surface *ps = softpipe->framebuffer.sbuf;
GLuint clearVal = softpipe->stencil.clear_value;
if (softpipe->stencil.write_mask[0] /*== 0xff*/) {
/* no masking */
pipe->region_fill(pipe, ps->region, 0, x, y, w, h, clearVal);
}
else if (softpipe->stencil.write_mask[0] != 0x0) {
/* masking */
/* fill with quad funcs */
assert(0);
}
}
}
|
