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
|
/**************************************************************************
*
* Copyright 2006 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 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 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.
*
**************************************************************************/
#include "enums.h"
#include "state.h"
#include "swrast/swrast.h"
#include "intel_context.h"
#include "intel_pixel.h"
#include "intel_regions.h"
#define FILE_DEBUG_FLAG DEBUG_PIXEL
static GLenum
effective_func(GLenum func, GLboolean 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.
*/
GLboolean
intel_check_blit_fragment_ops(GLcontext * ctx, GLboolean src_alpha_is_one)
{
if (ctx->NewState)
_mesa_update_state(ctx);
if (ctx->FragmentProgram._Enabled) {
DBG("fallback due to fragment program\n");
return GL_FALSE;
}
if (ctx->Color.BlendEnabled &&
(effective_func(ctx->Color.BlendSrcRGB, src_alpha_is_one) != GL_ONE ||
effective_func(ctx->Color.BlendDstRGB, src_alpha_is_one) != GL_ZERO ||
ctx->Color.BlendEquationRGB != GL_FUNC_ADD ||
effective_func(ctx->Color.BlendSrcA, src_alpha_is_one) != GL_ONE ||
effective_func(ctx->Color.BlendDstA, src_alpha_is_one) != GL_ZERO ||
ctx->Color.BlendEquationA != GL_FUNC_ADD)) {
DBG("fallback due to blend\n");
return GL_FALSE;
}
if (ctx->Texture._EnabledUnits) {
DBG("fallback due to texturing\n");
return GL_FALSE;
}
if (!(ctx->Color.ColorMask[0] &&
ctx->Color.ColorMask[1] &&
ctx->Color.ColorMask[2] &&
ctx->Color.ColorMask[3])) {
DBG("fallback due to color masking\n");
return GL_FALSE;
}
if (ctx->Color.AlphaEnabled) {
DBG("fallback due to alpha\n");
return GL_FALSE;
}
if (ctx->Depth.Test) {
DBG("fallback due to depth test\n");
return GL_FALSE;
}
if (ctx->Fog.Enabled) {
DBG("fallback due to fog\n");
return GL_FALSE;
}
if (ctx->_ImageTransferState) {
DBG("fallback due to image transfer\n");
return GL_FALSE;
}
if (ctx->Stencil.Enabled) {
DBG("fallback due to image stencil\n");
return GL_FALSE;
}
if (ctx->Scissor.Enabled) {
/* XXX Note: Scissor could be done with the blitter */
DBG("fallback due to image scissor\n");
return GL_FALSE;
}
if (ctx->RenderMode != GL_RENDER) {
DBG("fallback due to render mode\n");
return GL_FALSE;
}
return GL_TRUE;
}
GLboolean
intel_check_meta_tex_fragment_ops(GLcontext * ctx)
{
if (ctx->NewState)
_mesa_update_state(ctx);
/* Some of _ImageTransferState (scale, bias) could be done with
* fragment programs on i915.
*/
return !(ctx->_ImageTransferState || ctx->Fog.Enabled || /* not done yet */
ctx->Texture._EnabledUnits || ctx->FragmentProgram._Enabled);
}
/* The intel_region struct doesn't really do enough to capture the
* format of the pixels in the region. For now this code assumes that
* the region is a display surface and hence is either ARGB8888 or
* RGB565.
* XXX FBO: If we'd pass in the intel_renderbuffer instead of region, we'd
* know the buffer's pixel format.
*
* \param format as given to glDraw/ReadPixels
* \param type as given to glDraw/ReadPixels
*/
GLboolean
intel_check_blit_format(struct intel_region * region,
GLenum format, GLenum type)
{
if (region->cpp == 4 &&
(type == GL_UNSIGNED_INT_8_8_8_8_REV ||
type == GL_UNSIGNED_BYTE) && format == GL_BGRA) {
return GL_TRUE;
}
if (region->cpp == 2 &&
type == GL_UNSIGNED_SHORT_5_6_5_REV && format == GL_BGR) {
return GL_TRUE;
}
if (INTEL_DEBUG & DEBUG_PIXEL)
fprintf(stderr, "%s: bad format for blit (cpp %d, type %s format %s)\n",
__FUNCTION__, region->cpp,
_mesa_lookup_enum_by_nr(type), _mesa_lookup_enum_by_nr(format));
return GL_FALSE;
}
void
intelInitPixelFuncs(struct dd_function_table *functions)
{
functions->Accum = _swrast_Accum;
if (!getenv("INTEL_NO_BLIT")) {
functions->Bitmap = intelBitmap;
functions->CopyPixels = intelCopyPixels;
#ifdef I915
functions->ReadPixels = intelReadPixels;
functions->DrawPixels = intelDrawPixels;
#endif
}
}
|
