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
|
/**************************************************************************
*
* 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.
*
**************************************************************************/
/*
* Authors:
* Brian Paul
*/
#include "main/imports.h"
#include "main/image.h"
#include "main/macros.h"
#include "main/texformat.h"
#include "shader/program.h"
#include "shader/prog_parameter.h"
#include "shader/prog_print.h"
#include "st_context.h"
#include "st_program.h"
#include "st_cb_blit.h"
#include "st_cb_fbo.h"
#include "util/u_blit.h"
#include "cso_cache/cso_context.h"
void
st_init_blit(struct st_context *st)
{
st->blit = util_create_blit(st->pipe, st->cso_context);
}
void
st_destroy_blit(struct st_context *st)
{
util_destroy_blit(st->blit);
st->blit = NULL;
}
static void
st_BlitFramebuffer(GLcontext *ctx,
GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,
GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1,
GLbitfield mask, GLenum filter)
{
struct st_context *st = ctx->st;
const uint pFilter = ((filter == GL_NEAREST)
? PIPE_TEX_MIPFILTER_NEAREST
: PIPE_TEX_MIPFILTER_LINEAR);
if (!_mesa_clip_blit(ctx, &srcX0, &srcY0, &srcX1, &srcY1,
&dstX0, &dstY0, &dstX1, &dstY1)) {
return; /* nothing to draw/blit */
}
if (mask & GL_COLOR_BUFFER_BIT) {
struct st_renderbuffer *srcRb =
st_renderbuffer(ctx->ReadBuffer->_ColorReadBuffer);
struct st_renderbuffer *dstRb =
st_renderbuffer(ctx->DrawBuffer->_ColorDrawBuffers[0]);
struct pipe_surface *srcSurf = srcRb->surface;
struct pipe_surface *dstSurf = dstRb->surface;
if (st_fb_orientation(ctx->DrawBuffer) == Y_0_TOP) {
/* invert Y for dest */
dstY0 = dstRb->Base.Height - dstY0;
dstY1 = dstRb->Base.Height - dstY1;
}
if (st_fb_orientation(ctx->ReadBuffer) == Y_0_TOP) {
/* invert Y for src */
srcY0 = srcRb->Base.Height - srcY0;
srcY1 = srcRb->Base.Height - srcY1;
}
if (srcY0 > srcY1 && dstY0 > dstY1) {
/* Both src and dst are upside down. Swap Y to make it
* right-side up to increase odds of using a fast path.
* Recall that all Gallium raster coords have Y=0=top.
*/
GLint tmp;
tmp = srcY0;
srcY0 = srcY1;
srcY1 = tmp;
tmp = dstY0;
dstY0 = dstY1;
dstY1 = tmp;
}
util_blit_pixels(st->blit,
srcSurf, srcX0, srcY0, srcX1, srcY1,
dstSurf, dstX0, dstY0, dstX1, dstY1,
0.0, pFilter);
}
}
void
st_init_blit_functions(struct dd_function_table *functions)
{
#if FEATURE_EXT_framebuffer_blit
functions->BlitFramebuffer = st_BlitFramebuffer;
#endif
}
|
