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
|
/*
* Copyright 2006 VMware, 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 the rights to use, copy, modify, merge, publish,
* distribute, sublicense, 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 portionsalloc
* 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 NONINFRINGEMENT.
* IN NO EVENT SHALL VMWARE 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.
*/
#include "main/accum.h"
#include "main/enums.h"
#include "main/state.h"
#include "main/stencil.h"
#include "main/bufferobj.h"
#include "main/context.h"
#include "swrast/swrast.h"
#include "brw_context.h"
#include "intel_pixel.h"
#define FILE_DEBUG_FLAG DEBUG_PIXEL
static GLenum
effective_func(GLenum func, bool src_alpha_is_one)
{
if (src_alpha_is_one) {
if (func == GL_SRC_ALPHA)
return GL_ONE;
if (func == GL_ONE_MINUS_SRC_ALPHA)
return GL_ZERO;
}
return func;
}
/**
* Check if any fragment operations are in effect which might effect
* glDraw/CopyPixels.
*/
bool
intel_check_blit_fragment_ops(struct gl_context * ctx, bool src_alpha_is_one)
{
if (ctx->NewState)
_mesa_update_state(ctx);
if (_mesa_arb_fragment_program_enabled(ctx)) {
DBG("fallback due to fragment program\n");
return false;
}
if (ctx->Color.BlendEnabled &&
(effective_func(ctx->Color.Blend[0].SrcRGB, src_alpha_is_one) != GL_ONE ||
effective_func(ctx->Color.Blend[0].DstRGB, src_alpha_is_one) != GL_ZERO ||
ctx->Color.Blend[0].EquationRGB != GL_FUNC_ADD ||
effective_func(ctx->Color.Blend[0].SrcA, src_alpha_is_one) != GL_ONE ||
effective_func(ctx->Color.Blend[0].DstA, src_alpha_is_one) != GL_ZERO ||
ctx->Color.Blend[0].EquationA != GL_FUNC_ADD)) {
DBG("fallback due to blend\n");
return false;
}
if (ctx->Texture._MaxEnabledTexImageUnit != -1) {
DBG("fallback due to texturing\n");
return false;
}
if (!(ctx->Color.ColorMask[0][0] &&
ctx->Color.ColorMask[0][1] &&
ctx->Color.ColorMask[0][2] &&
ctx->Color.ColorMask[0][3])) {
DBG("fallback due to color masking\n");
return false;
}
if (ctx->Color.AlphaEnabled) {
DBG("fallback due to alpha\n");
return false;
}
if (ctx->Depth.Test) {
DBG("fallback due to depth test\n");
return false;
}
if (ctx->Fog.Enabled) {
DBG("fallback due to fog\n");
return false;
}
if (ctx->_ImageTransferState) {
DBG("fallback due to image transfer\n");
return false;
}
if (_mesa_stencil_is_enabled(ctx)) {
DBG("fallback due to image stencil\n");
return false;
}
if (ctx->Pixel.ZoomX != 1.0F || ctx->Pixel.ZoomY != 1.0F) {
DBG("fallback due to pixel zoom\n");
return false;
}
if (ctx->RenderMode != GL_RENDER) {
DBG("fallback due to render mode\n");
return false;
}
return true;
}
void
intelInitPixelFuncs(struct dd_function_table *functions)
{
functions->Bitmap = intelBitmap;
functions->CopyPixels = intelCopyPixels;
functions->DrawPixels = intelDrawPixels;
functions->ReadPixels = intelReadPixels;
}
|
